Moyer Diebel Dishwasher MH 60M5 User Manual
For machines beginning with  
serial no. D3694 and above  
Technical Manual  
Door-Type  
Dishwasher  
Model  
MH-60M5  
High Temperature  
with Built-in Booster  
MH-6NM5  
High Temperature  
MH-6LM5  
Low Temperature  
Machine Serial No.  
Manual P/N 113494 Rev E  
March, 2004  
P. O. Box 4183  
2674 N. Service Road  
Winston-Salem, North Carolina 27115-4183  
Jordan Station, Ontario, Canada L0R 1S0  
336/661-1992  
Fax: 336/661-1660  
905/562-4195  
Fax: 905/562-4618  
Moyer Diebel  
Download from Www.Somanuals.com. All Manuals Search And Download.  
REVISIONS  
Revision History  
Revision  
Date  
07/01/02  
Revised  
Pages  
All  
Serial Number  
Effectivity  
D3694  
Comments  
Issue of New Service Manual and  
replacement parts list  
10/18/02  
10/18/02  
10/18/02  
3
D3858  
D3858  
D3858  
Revised rated amps listing  
Revised cycle times  
13, 17, 24  
42,43  
Revised rinse arm bearings and  
assemblies numbers. Bearing 112164  
replaced by 113514, 0707453 &  
0708899 replaced by 414111.  
10/18/02  
37  
D3858  
Inserted new rinse arm assemblies 414110  
(MH-60 & MH-6N) and 414111 (MH-6L)  
10/18/02  
10/24/02  
53, 56  
63  
D3700  
D3858  
Inserted new bushing P/N 100171  
Inserted new timer board for MH-60  
and MH-6N P/N 113547  
12/18/02  
63  
D3858  
—
Inserted new timer control board kit.  
P/N 900911 to convert all timer boards  
to 113597.  
2/5/03  
2/5/03  
47, 61  
63  
Replace 108391 with 113622 thermometer.  
Replaced Furnace (Siemens) overloads  
with Telemecanique (Square D) overloads.  
7/22/03  
7/22/03  
49  
D3982  
––  
Replaced 110562 ith 113604.  
53,57  
Revised plastic style vacuum breakers with  
bronze style.  
7/22/03  
2/3/04  
61  
––  
Replaced P/N 112086 with 113622.  
50-51  
D4237  
Insert new drawing and add seperate pressure  
reducing valve 107550 and line strainer 110768.  
2/3/04  
33  
––  
Corrected side door part number 325409 to  
325405.  
i
Download from Www.Somanuals.com. All Manuals Search And Download.  
CONTENTS  
CONTENTS  
LIMITED WARRANTY ................................................................................................................ v  
INTRODUCTION .......................................................................................................................... 1  
Model Number .................................................................................................................... 6  
Standard Equipment ............................................................................................................ 6  
Options ................................................................................................................................ 6  
Electrical Power Requirements............................................................................................ 7  
INSTALLATION............................................................................................................................ 8  
Unpack the Dishwasher ...................................................................................................... 8  
To Change from Straight-through Operation to Corner Operation .................................... 9  
Electrical Connections ........................................................................................................10  
Plumbing Connections ........................................................................................................12  
Water Connections ..........................................................................................................12  
Drain Connections ..........................................................................................................13  
Chemical Connections ....................................................................................................14  
INITIAL START-UP ......................................................................................................................16  
OPERATION SUMMARY ............................................................................................................22  
CLEANING....................................................................................................................................23  
Cleaning Schedule ..............................................................................................................23  
Deliming Process ................................................................................................................24  
TROUBLESHOOTING..................................................................................................................25  
BASIC SERVICE ..........................................................................................................................27  
REPLACEMENT PARTS ..............................................................................................................33  
ELECTRICAL SCHEMATICS......................................................................................................67  
LIST OF FIGURES  
Figure 1 – Remove Front Panel ................................................................................................  
8
Figure 2 – Electrical Connection Location................................................................................ 10  
Figure 3 – Hinged Control Panel .............................................................................................. 11  
Figure 4 – Main Terminal Block .............................................................................................. 11  
Figure 5 – Hot Water Connection (MH-60 Only) .................................................................... 12  
Figure 6 – Hot Water Connection (MH-6N, MH-6L Only)...................................................... 12  
Figure 7 – Drain Hose Connection............................................................................................ 13  
Figure 8 – Chemical Dispenser Signal Terminal Block............................................................ 14  
Figure 9 – Chemical Signal Connection Points ........................................................................ 14  
Figure 10 – Detergent Probe Injection Points, 1/2" .................................................................... 15  
ii  
Download from Www.Somanuals.com. All Manuals Search And Download.  
CONTENTS  
LIST OF FIGURES (cont.)  
Figure 11 – Rinse Aid and Sanitizer Injection Points .............................................................. 15  
Figure 12 – Fuses...................................................................................................................... 28  
Figure 13 – Motor Overload .................................................................................................... 28  
Figure 14 – Solid State Control Board .................................................................................... 29  
Figure 15 – Float Switch .......................................................................................................... 29  
Figure 16 – float Switch Troubleshooting Chart ...................................................................... 29  
Figure 17 – Heater Element Wiring.......................................................................................... 30  
Figure 18 – Pump Motor Wiring Diagrams.............................................................................. 31  
Figure 19 – Pump Seal Replacement........................................................................................ 32  
Figure 20 – Doors and Panels .................................................................................................. 34  
Figure 21 – Door Guides, Stops and Lift Bracket.................................................................... 36  
Figure 22 – Door Handle, Spring Assembly and Safety Switch .............................................. 38  
Figure 23A– Straight Track Assembly........................................................................................ 40  
Figure 23B– Corner Track Assembly ........................................................................................ 40  
Figure 24 – Wash/Rinse Spray Piping ...................................................................................... 42  
Figure 25 – Wash/Rinse Spray Arms........................................................................................ 44  
Figure 26 – Drain Assembly and Scrap Screens ...................................................................... 46  
Figure 27 – Wash Tank Heat and Thermostats ........................................................................ 48  
Figure 28 – Electric Booster and Thermostats (MH-60 Only) ................................................ 50  
Figure 29 – Lower Fill Piping Assembly (MH-60 Only).......................................................... 52  
Figure 30 – Upper Fill Piping Assembly (MH-60/6N Only).................................................... 54  
Figure 31 – Lower Fill Piping Assembly (MH-6N/6L Only) .................................................. 56  
Figure 32 – Upper Fill Piping Assembly (MH-6L Only) ........................................................ 58  
Figure 33 – Pump Assembly .................................................................................................... 60  
Figure 34 – Control Panel and Gauges .................................................................................... 62  
Figure 35 – Control Cabinet .................................................................................................... 64  
Figure 36 – Dishracks and PRV................................................................................................ 66  
ELECTRICAL SCHEMATICS  
B701602/H – Wiring Diagrams (MH-60, MH-6N, MH-6L Steam/Electric 1 & 3 Phase)............67  
iii  
Download from Www.Somanuals.com. All Manuals Search And Download.  
THIS PAGE  
INTENTIONALLY  
LEFT BLANK  
iv  
Download from Www.Somanuals.com. All Manuals Search And Download.  
WARRANTY  
LIMITED WARRANTY  
Champion Industries/Moyer Diebel Limited, P.O. Box 4183, Winston-Salem, North Carolina 27115, and P. O. Box 301,  
2674 North Service Road, Jordan Station, Ontario, Canada L0R 1S0 warrants machines, and parts, as set out below.  
Warranty of Machines: Champion Industries/Moyer Diebel Limited warrants all new machines of its manufacture bearing  
the name “Champion” or "Moyer Diebel" and installed within the United States and Canada to be free from defects in  
material and workmanship for a period of one (1) year after the date of installation or fifteen (15) months after the date of  
shipment by Champion/Moyer Diebel, whichever occurs first. [See below for special provisions relating to Model Series  
DF and SW.] The warranty registration card must be returned to Champion/Moyer Diebel within ten (10) days after instal-  
lation. If warranty card is not returned to Champion/Moyer Diebel within such period, the warranty will expire after one  
year from the date of shipment.  
Champion/Moyer Diebel will not assume any responsibility for extra costs for installation in any area where there are  
jurisdictional problems with local trades or unions.  
If a defect in workmanship or material is found to exist within the warranty period, Champion/Moyer Diebel, at its election,  
will either repair or replace the defective machine or accept return of the machine for full credit; provided, however, as to  
Model Series DF and SW, Champion/Moyer Diebel's obligation with respect to labor associated with any repairs shall end  
(a) 120 days after shipment, or (b) 90 days after installation, whichever occurs first. In the event that Champion/Moyer Diebel  
elects to repair, the labor and work to be performed in connection with the warranty shall be done during regular working  
hours by a Champion/Moyer Diebel authorized service technician. Defective parts become the property of Champion/Moyer  
Diebel. Use of replacement parts not authorized by Champion/Moyer Diebel will relieve Champion/Moyer Diebel of all  
further liability in connection with its warranty. In no event will Champion/Moyer Diebel's warranty obligation exceed  
Champion/Moyer Diebel's charge for the machine. The following are not covered by Champion/Moyer Diebel's warranty:  
a. Lighting of gas pilots or burners.  
b. Cleaning of gas lines.  
c. Replacement of fuses or resetting of overload breakers.  
d. Adjustment of thermostats.  
e. Adjustment of clutches.  
f. Opening or closing of utility supply valves or switching of electrical supply current.  
g. Adjustments to chemical dispensing equipment.  
h. Cleaning of valves, strainers, screens, nozzles, or spray pipes.  
i. Performance of regular maintenance and cleaning as outlined in operator’s guide.  
j. Damages resulting from water conditions, accidents, alterations, improper use, abuse,  
tampering, improper installation, or failure to follow maintenance and operation procedures.  
Examples of the defects not covered by warranty include, but are not limited to: (1) Damage to the exterior or interior  
finish as a result of the above, (2) Use with utility service other than that designated on the rating plate, (3) Improper  
connection to utility service, (4) Inadequate or excessive water pressure, (5) Corrosion from chemicals dispensed in excess  
of recommended concentrations, (6) Failure of electrical components due to connection of chemical dispensing equipment  
installed by others, (7) Leaks or damage resulting from such leaks caused by the installer, including those at machine table  
connections or by connection of chemical dispensing equipment installed by others, (8) Failure to comply with local  
building codes, (9) Damage caused by labor dispute.  
Warranty of Parts: Champion/Moyer Diebel warrants all new machine parts produced or authorized by Champion/Moyer  
Diebel to be free from defects in material and workmanship for a period of 90 days from date of invoice. If any defect in  
material and workmanship is found to exist within the warranty period Champion/Moyer Diebel will replace the defective  
part without charge.  
DISCLAIMER OF WARRANTIES AND LIMITATIONS OF LIABILITY. CHAMPION/MOYER DIEBEL'S  
WARRANTY IS ONLY TO THE EXTENT REFLECTEDABOVE. CHAMPION/MOYER DIEBEL MAKES NO OTHER  
WARRANTIES, EXPRESS OR IMPLIED, INCLUDING, BUT NOT LIMITED TO, ANY WARRANTY OF MER-  
CHANTABILITY, OR FITNESS OF PURPOSE. CHAMPION/MOYER DIEBEL SHALL NOT BE LIABLE FOR INCI-  
DENTAL OR CONSEQUENTIAL DAMAGES. THE REMEDIES SET OUT ABOVE ARE THE EXCLUSIVE REME-  
DIES FOR ANY DEFECTS FOUND TO EXIST IN CHAMPION/MOYER DIEBELDISHWASHING MACHINES AND  
CHAMPION/MOYER DIEBEL PARTS,ANDALL OTHER REMEDIESARE EXCLUDED, INCLUDINGANY LIABIL-  
ITY FOR INCIDENTALS OR CONSEQUENTIAL DAMAGES.  
Champion/Moyer Diebel does not authorize any other person, including persons who deal in Champion/Moyer Diebel  
dishwashing machines, to change this warranty or create any other obligation in connection with Champion/Moyer Diebel  
Dishwashing Machines.  
rev. 8699  
v
Download from Www.Somanuals.com. All Manuals Search And Download.  
THIS PAGE  
INTENTIONALLY  
LEFT BLANK  
vi  
Download from Www.Somanuals.com. All Manuals Search And Download.  
INTRODUCTION  
INTRODUCTION  
Welcome to Moyer Diebel...and thank you for allowing us to take care of your dishwashing needs.  
This manual covers the door-type dishwasher, Models MH-60, MH-6N, MH-6L.  
Your machine was completely assembled, inspected, and thoroughly tested at our factory before it  
was shipped to your installation site.  
This manual contains:  
• Installation Instructions  
• Operation and Cleaing Instructions  
• Troubleshooting Guide  
• Basic Service Information  
• Replacement Parts Lists  
• Electrical Schematics  
All information, illustrations and specifications contained in this manual are based upon  
the latest product information available at the time of publication. Moyer Diebel constantly  
improves its products and reserves the right to make changes at any time or to change  
specifications or design without notice and without incurring any obligation.  
For your protection, factory authorized parts should always be used for repairs.  
Replacement parts may be ordered directly from your Moyer Diebel authorized parts distributor  
or authorized service agency. When ordering parts, please supply the model number, serial num-  
ber, voltage, and phase of your machine, the part number, part descriptions and quantity.  
1
Download from Www.Somanuals.com. All Manuals Search And Download.  
GENERAL  
MODEL NUMBERS  
MH-60, MH-6N, MH-6L  
The MH-60 model is a high temperature  
(180°F/82°C rinse) sanitizing model with booster.  
The MH-6N model is a high temperature  
(180°F/82°C rinse) sanitizing model without  
booster.  
The MH-6L is a low temperature (Min.  
120°F/49°C-140°F/60°C Optimum) sanitizing  
model for use with a sodium hypochlorite  
(Chlorine) based sanitizer at a minimum  
concentration of 50 PPM in the final rinse.  
Standard Equipment includes:  
MH-60, MH-6N, MH-6L  
• Automatic tank fill and start  
• Built-in electric booster heater (MH-60 only)  
• Field convertible to corner model with kit  
• Electric tank heat  
• Balanced two door lift system  
• Low-water tank heat protection  
• 1-hp drip-proof pump motor  
• Door safety switch  
• Common utility connections  
• Two dish racks (peg and flat bottom)  
• Detergent/chemical connection provisions  
• Stainless steel front and side panels  
• 60-second time cycle  
• 1-1/2" O.D. gravity drain connection  
• Water pressure reducing valve (MH-60 only)  
• Interchangeable upper and lower spray arms  
• Stainless steel rinse arms with cleanout  
Options (MH-60 only)  
• Electric booster (70°F/39°C temperature  
rise) heater for 110°F/43°C supply water  
• Steam injector or steam coil tank heat  
(steam booster 40°F/23°C-70°F/39°C rise)  
Accessories  
Additional dishracks:  
Dish rack (peg) P/N 101285  
Silverware rack (flat bottom)  
P/N 101273  
3/4" Pressure reducing valve (PRV) P/N 112387  
2
Download from Www.Somanuals.com. All Manuals Search And Download.  
GENERAL  
Electrical Power Requirements: Fig Electric Heat/Electric Booster  
Model  
Voltage  
Booster Rise  
Rated  
Minimum Supply Ckt.  
Maximum Overcurrent  
(MH-60 Only)  
—
Amps  
46 Amps  
35 Amps  
35 Amps  
37 Amps  
37 Amps  
20 Amps  
20 Amps  
21 Amps  
21 Amps  
8 Amps  
9 Amps  
9 Amps  
7 Amps  
—
Conductor Ampacity  
60 Amps  
40 Amps  
40 Amps  
40 Amps  
40 Amps  
25 Amps  
25 Amps  
25 Amps  
20 Amps  
15 Amps  
15 Amps  
15 Amps  
15 Amps  
—
Protective Device  
86 Amps  
40 Amps  
40 Amps  
40 Amps  
40 Amps  
25 Amps  
25 Amps  
25 Amps  
25 Amps  
15 Amps  
15 Amps  
15 Amps  
15 Amps  
—
MH-6N/MH-6L  
MH-6N/MH-6L  
MH-6N/MH-6L  
MH-6N/MH-6L  
MH-6N/MH-6L  
MH-6N/MH-6L  
MH-6N/MH-6L  
MH-6N/MH-6L  
MH-6N/MH-6L  
MH-6N/MH-6L  
MH-6N/MH-6L  
MH-6N/MH-6L  
MH-6N/MH-6L  
MH-60  
115/60/1  
208/60/1  
220/60/1  
230/60/1  
240/60/1  
208/60/3  
220/60/3  
230/60/3  
240/60/3  
380/60/3  
415/60/3  
480/60/3  
575/60/3  
115/60/1  
208/60/1  
220/60/1  
230/60/1  
240/60/1  
208/60/3  
220/60/3  
230/60/3  
240/60/3  
380/60/3  
415/60/3  
480/60/3  
575/60/3  
115/60/1  
208/60/1  
220/60/1  
230/60/1  
240/60/1  
208/60/3  
220/60/3  
230/60/3  
240/60/3  
380/60/3  
415/60/3  
480/60/3  
575/60/3  
—
—
—
—
—
—
—
—
—
—
—
—
—
MH-60  
40°F/23°C  
40°F/23°C  
40°F/23°C  
40°F/23°C  
40°F/23°C  
40°F/23°C  
40°F/23°C  
40°F/23°C  
40°F/23°C  
40°F/23°C  
40°F/23°C  
40°F/23°C  
—
71 Amps  
71 Amps  
79 Amps  
79 Amps  
40 Amps  
40 Amps  
45 Amps  
45 Amps  
26 Amps  
27 Amps  
20 Amps  
16 Amps  
—
75 Amps  
75 Amps  
90 Amps  
90 Amps  
45 Amps  
45 Amps  
50 Amps  
50 Amps  
30 Amps  
30 Amps  
25 Amps  
20 Amps  
—
75 Amps  
75 Amps  
90 Amps  
90 Amps  
45 Amps  
45 Amps  
50 Amps  
50 Amps  
30 Amps  
30 Amps  
25 Amps  
20 Amps  
—
MH-60  
MH-60  
MH-60  
MH-60  
MH-60  
MH-60  
MH-60  
MH-60  
MH-60  
MH-60  
MH-60  
MH-60  
MH-60  
—
—
—
—
MH-60  
—
—
—
—
MH-60  
—
—
—
—
MH-60  
—
—
—
—
MH-60  
70°F/39°C  
70°F/39°C  
70°F/39°C  
70°F/39°C  
70°F/39°C  
70°F/39°C  
70°F/39°C  
70°F/39°C  
57 Amps  
57 Amps  
64 Amps  
64 Amps  
35 Amps  
37 Amps  
29 Amps  
25 Amps  
60 Amps  
60 Amps  
70 Amps  
70 Amps  
40 Amps  
45 Amps  
35 Amps  
30 Amps  
60 Amps  
60 Amps  
70 Amps  
70 Amps  
40 Amps  
45 Amps  
35 Amps  
30 Amps  
MH-60  
MH-60  
MH-60  
MH-60  
MH-60  
MH-60  
MH-60  
Electrical Power Requirements: Fig Steam or Gas Heat/Steam or Gas Booster  
Model  
Voltage  
Booster Rise  
Rated  
Minimum Supply Ckt.  
Maximum Overcurrent  
(D-HBT Only)  
Amps  
20 Amps  
12 Amps  
12 Amps  
11 Amps  
11 Amps  
6 Amps  
6 Amps  
6 Amps  
6 Amps  
4 Amps  
4 Amps  
3 Amps  
3 Amps  
—
Conductor Ampacity  
25 Amps  
15 Amps  
15 Amps  
15 Amps  
15 Amps  
15 Amps  
15 Amps  
15 Amps  
15 Amps  
15 Amps  
15 Amps  
15 Amps  
15 Amps  
—
Protective Device  
25 Amps  
15 Amps  
15 Amps  
15 Amps  
15 Amps  
15 Amps  
15 Amps  
15 Amps  
15 Amps  
15 Amps  
15 Amps  
15 Amps  
15 Amps  
—
MH-6N/MH-6L  
MH-6N/MH-6L  
MH-6N/MH-6L  
MH-6N/MH-6L  
MH-6N/MH-6L  
MH-6N/MH-6L  
MH-6N/MH-6L  
MH-6N/MH-6L  
MH-6N/MH-6L  
MH-6N/MH-6L  
MH-6N/MH-6L  
MH-6N/MH-6L  
MH-6N/MH-6L  
MH-60  
115/60/1  
208/60/1  
220/60/1  
230/60/1  
240/60/1  
208/60/3  
220/60/3  
230/60/3  
240/60/3  
380/60/3  
415/60/3  
480/60/3  
575/60/3  
115/60/1  
208/60/1  
220/60/1  
230/60/1  
240/60/1  
208/60/3  
220/60/3  
230/60/3  
240/60/3  
380/60/3  
415/60/3  
480/60/3  
575/60/3  
115/60/1  
208/60/1  
220/60/1  
230/60/1  
240/60/1  
208/60/3  
220/60/3  
230/60/3  
240/60/3  
380/60/3  
415/60/3  
480/60/3  
575/60/3  
—
—
—
—
—
—
—
—
—
—
—
—
—
—
MH-60  
40°F/23°C  
40°F/23°C  
40°F/23°C  
40°F/23°C  
40°F/23°C  
40°F/23°C  
40°F/23°C  
40°F/23°C  
40°F/23°C  
40°F/23°C  
40°F/23°C  
40°F/23°C  
—
13 Amps  
13 Amps  
12 Amps  
12 Amps  
6 Amps  
6 Amps  
6 Amps  
6 Amps  
4 Amps  
4 Amps  
3 Amps  
3 Amps  
—
15 Amps  
15 Amps  
15 Amps  
15 Amps  
15 Amps  
15 Amps  
15 Amps  
15 Amps  
15 Amps  
15 Amps  
15 Amps  
15 Amps  
—
5 Amps  
15 Amps  
15 Amps  
15 Amps  
15 Amps  
15 Amps  
15 Amps  
15 Amps  
15 Amps  
15 Amps  
15 Amps  
15 Amps  
—
MH-60  
MH-60  
MH-60  
MH-60  
MH-60  
MH-60  
MH-60  
MH-60  
MH-60  
MH-60  
MH-60  
MH-60  
MH-60  
—
—
—
—
MH-60  
—
—
—
—
MH-60  
—
—
—
—
MH-60  
—
—
—
—
MH-60  
70°F/39°C  
70°F/39°C  
70°F/39°C  
70°F/39°C  
70°F/39°C  
70°F/39°C  
70°F/39°C  
70°F/39°C  
6 Amps  
6 Amps  
6 Amps  
6 Amps  
4 Amps  
4 Amps  
3 Amps  
3 Amps  
15 Amps  
15 Amps  
15 Amps  
15 Amps  
15 Amps  
15 Amps  
15 Amps  
15 Amps  
15 Amps  
15 Amps  
15 Amps  
15 Amps  
15 Amps  
15 Amps  
15 Amps  
15 Amps  
MH-60  
MH-60  
MH-60  
MH-60  
MH-60  
MH-60  
MH-60  
3
Download from Www.Somanuals.com. All Manuals Search And Download.  
INSTALLATION  
INSTALLATION  
Unpack the dishwasher  
CAUTION:  
Care should be taken when lifting the  
machine to prevent damage.  
!
NOTE:  
The installation of your machine must meet  
all applicable health and safety codes.  
1. Immediately after unpacking the machine,  
inspect for any shipping damage. If damage  
is found, save the packing material and con-  
tact the carrier immediately.  
2. Remove the dishwasher from the skid.  
Move the machine to its permanent location.  
POWER  
NOTE:  
FILL  
CYCLE  
Refer to: To change from Straight-through  
Operation to Corner Operation on the next  
page if your machine will be placed for  
corner operation.  
EXTENDED WASH  
RINSE  
WASH  
WARNING!  
TURN OFF POWER BEFORE  
SERVICING MACHINE  
3. Level the machine (if required) by placing a  
level on the top of the machine and adjusting  
the feet. Level the machine front-to-back and  
side-to-side.  
4. Remove the dishracks from the interior of  
the machine.  
5. Refer to Fig. 1. Remove (2) screws that hold  
the front panel. Remove the front panel in  
preparation for service connections.  
Figure 1  
Remove Front Panel  
Changing Operation – Straight-through to Corner  
Your door-type dishwasher was specified to the factory as a straight-through configuration or  
as a corner configuration. Your machine can be converted from straight-through to corner or  
from corner to straight-through. Contact the factory for instructions on changing the operation  
of your dishwasher.  
4
Download from Www.Somanuals.com. All Manuals Search And Download.  
INSTALLATION  
INSTALLATION (Cont.)  
Electrical Connections  
WARNING:  
!
Electrical and grounding connections  
must comply with all applicable  
Electrical Codes.  
WARNING:  
!
When working on the dishwasher, discon-  
nect the electric service and place a tag at  
the disconnect switch to indicate work is  
being done on that circuit.  
1. A qualified electrician must compare the  
electrical power supply with the machine  
electrical specifications before connecting  
to the incoming service through a fused  
disconnect switch.  
Electrical knock-out  
lower rear corner  
Refer to Fig. 2  
2. A knock-out is provided at the lower right  
rear corner (as viewed from the front) for  
the electrical service connection. A fused  
disconnect switch or circuit breaker (sup-  
plied by others) is required to protect the  
power supply circuit.  
Figure 2  
Electrical Connection Location  
5
Download from Www.Somanuals.com. All Manuals Search And Download.  
INSTALLATION  
Electrical Connections (Cont.)  
Refer to Fig. 3  
3. Remove (2) lower screws from the front  
panel of the machine to expose the electri-  
cal controls. Remove (2) screws on the  
control panel support. Swing the hinged  
control panel forward.  
Figure 3  
Hinged Control Panel  
Refer to Fig. 4  
4. Three phase or single phase incoming  
power wiring connections are made at the  
bottom of the machine’s main terminal  
block. The main terminal block is located  
on the side of the front right post of the  
dishwasher.  
Electrical Power Connection  
Figure 4  
Main Terminal Block  
6
Download from Www.Somanuals.com. All Manuals Search And Download.  
INSTALLATION  
INSTALLATION (Cont.)  
Plumbing Connections  
NOTE:  
Plumbing connections must comply  
with all applicable sanitary and  
plumbing codes.  
Water Connections  
12"  
[305mm]  
1. All MH series dishwashers require  
a single, hot water supply.  
FLOOR  
The hot water connection to all MH  
series dishwashers is 3/4" NPT.  
The connection is made from  
underneath the dishwasher.  
Figure 5  
Hot Water Connection  
(MH-60 Only)  
3/4" NPT  
The following minimum water  
temperatures are recommended:  
MH-60 with built-in 40° rise electric  
booster (Minimum 140°F/60°C)  
(Min./Max. flow pressure  
20-22 PSI/138-151.8 kPa)  
MH-60 with built-in 70° rise electric  
booster (Minimum 110°F/43°C)  
(Min./Max. flow pressure  
20-22 PSI/138-151.8 kPa)  
MH-6N without built-in booster  
(Minimum 180°F/70°C)  
(Min./Max. flow pressure  
20-22 PSI/138-151.8 kPa)  
12"  
[305mm]  
MH-6L low temperature  
(Minimum 120°F/49°C-  
140°F/60°C Optimum)  
(Min./Max. flow pressure  
20-22 PSI/138-151.8 kPa)  
FLOOR  
Figure 8  
Refer to Figs. 5 and 6  
Hot Water Connection  
(MH-6N, MH-6L Only)  
3/4" NPT  
7
Download from Www.Somanuals.com. All Manuals Search And Download.  
INSTALLATION  
Water Connections (Cont.)  
2. A manual shut-off valve for steam and water  
(supplied by others) should be installed in  
the supply line to allow for  
servicing of the machine. The shut-off  
valve should be the same size or larger  
than the supply line.  
3. Install a 3/4" pressure reducing valve (PRV)  
in the water supply line if flow pressure  
exceeds 20-22 PSI/138-151.8 kPa.  
A PRV is standard equipment on Model  
MH-60. A PRV is not standard equipment  
on Models MH-6N, MH-6L.  
Drain Connections  
Refer to Fig. 9  
1. MH series models are GRAVITY DRAIN  
machines equipped with a 1-1/2" O.D.  
hose connection point.  
2. The maximum drain flow rate is  
15 gallons/min-56.8 liters/min.  
11" [280mm]  
Above floor level  
3. Drain height for all models must not  
exceed 11" (280mm) above floor level.  
4. The drain connection is made to the  
dishwasher from underneath the machine  
through an access hole in the machine base.  
Ventilation  
Figure 7  
Drain Hose Connection  
1-1/2" O.D.  
NOTE:  
Ventilation must comply with local  
sanitary and plumbing codes.  
(Max flow rate = 15 gal/min-56.8 liters/min)  
CAUTION:  
Exhaust air should not be vented into a  
wall, ceiling, or concealed space of a  
building. Condensation can cause damage.  
!
8
Download from Www.Somanuals.com. All Manuals Search And Download.  
INSTALLATION  
INSTALLATION (Cont.)  
Chemical Connections  
NOTE:  
Consult a qualified chemical supplier  
for your chemical needs.  
Refer to Fig. 8  
1. A chemical signal terminal block is  
supplied for chemical dispensing  
equipment.  
2. The terminal block is located below  
the control panel fuse block.  
RINSE  
COMMON  
DETERGENT  
Figure 8  
Chemical Dispenser  
Signal  
Terminal Block  
Refer to Fig. 9  
Detergent Signal Connection Point  
1 Amp Max Load/115VAC  
3. The detergent signal is limited  
to a maximum load of 1 Amp.  
Signal voltage is 115VAC.  
Rinse aid/Sanitizer  
Common Return  
Signal Connection Point  
1 Amp Max load/115VAC  
4. The Rinse aid/Sanitizer  
signal is limited to a max-  
imum load of 1 Amp.  
Signal voltage is 115VAC.  
Figure 9  
Chemical Signal  
Connection Points  
9
Download from Www.Somanuals.com. All Manuals Search And Download.  
INSTALLATION  
Chemical Connections (Cont.)  
Refer to Fig. 10  
5. A 1/2" detergent probe injection point  
is provided at the rear and left side of  
the dishwasher.  
6. Detergent may be added manually if  
your dishwasher is not equipped with  
dispensing equipment. Consult your  
chemical supplier for recommended  
amounts.  
Figure 10  
Detergent Probe  
Injection Points, 1/2"  
Refer to Fig. 11  
7. MH-60, 6N, 6L  
A 1/4" NPT rinse aid injection point is  
provided in the final rinse manifold.  
MH-60, 6N  
Use a liquid rinse aid.  
The manifold is located on the top right  
side of the dishwasher.  
1/4" NPT rinse-aid  
8. MH-6L Only  
injection point  
A 1/8" NPT sanitizer injection point is  
provided in the final rinse manifold.  
Model MH60, 6N, 6L  
Models MH-60 and MH-6N do not  
require sanitizer.  
9. Use a sodium hypochlorite (Chlorine)  
based sanitizer at a minimum  
concentration of 50PPM in the final rinse.  
10. Use chlorine test papers to verify and  
monitor the 50PPM chlorine level.  
1/8" NPT sanitizer  
injection point  
Model MH6L Only  
WARNING:  
!
Never premix rinse aid with the  
sanitizing agent. Mixing may cause  
hazardous gases to form.  
CAUTION:  
!
Some metals, including silver, aluminum  
and pewter, are attacked by sodium  
hypochlorinte (chlorine). Avoid cleaning  
these metals in a MH-6L.  
Figure 11  
Rinse Aid and  
Sanitizer Injection Points  
(Top of Dishwasher)  
10  
Download from Www.Somanuals.com. All Manuals Search And Download.  
INITIAL START-UP  
INITIAL START-UP  
Complete the installation  
After plumbing and electrical connections are made, follow  
the steps below to complete the installation of your dishwasher.  
1. Remove the white protective covering from the  
exterior of the machine.  
2. Remove any foreign material from inside  
the machine.  
3. Make sure dishwasher power switch is off.  
4. Turn main water supply on.  
5. Turn main power on at the main power  
service disconnect switch.  
1
Install the Scrap Screens  
and Drain-Overflow Assembly  
Install scrap screens.  
Make sure rubber stopper is secure on the  
drain-overflow assembly.  
Make sure the drain-overflow  
seats securely in the tank bottom.  
MAKE SURE DOORS  
ARE FULLY CLOSED.  
B
POWER  
EXTENDED WASH  
2
CYCLE  
D
The controls are located  
A
on the front of the dishwasher.  
OFF  
A- On/Off power switch  
B- Power indicator Light  
C- In-cycle light  
WASH  
RINSE PRESSURE  
C
D- Extended wash switch  
E- Wash water temperature gauge  
F- Final rinse pressure gauge  
F
E
11  
Download from Www.Somanuals.com. All Manuals Search And Download.  
INITIAL START-UP  
INITIAL START-UP (CONT.)  
POWER  
3
EXTENDED WASH  
CYCLE  
THE POWER SWITCH IS  
ON DURING INITIAL FILL.  
OFF  
Make sure the doors are fully closed.  
Push the On/Off power switch to the  
UP position.  
WASH  
RINSE PRESSURE  
THE DISHWASHER FILLS  
AUTOMATICALLY.  
NOTE:  
The dishwasher will fill automatically  
each time the power is turned off even  
if the dishwasher is full of water.  
POWER  
EXTENDED WASH  
4
CYCLE  
Note that the power indicator light  
is illuminated.  
OFF  
WASH  
RINSE PRESSURE  
5
Check Wash  
Water Temperature  
The wash tank heater and the (booster tank  
heater, MH-60 only) will begin to heat the  
water in the dishwasher.  
POWER  
EXTENDED WASH  
Wait approximately 10 minutes for the wash  
tank water to reach operating temperature.  
The temperature should be a minimum  
of 150°F/66°C for (MH-60, MH-6N).  
The MH-6L requires a minimum of  
CYCLE  
OFF  
120°F/49°C. However, a minimum of  
140°F/60°C is optimum for the MH-6L.  
WASH  
RINSE PRESSURE  
Prescrap the dishes. Load ware into the  
dishrack. Open the doors, insert the rack  
into the dishwasher.  
12  
Download from Www.Somanuals.com. All Manuals Search And Download.  
INITIAL START-UP  
INITIAL START-UP (CONT.)  
6
Fully close the dishwasher doors.  
The dishwasher will begin the  
automatic cycle.  
Opening the doors anytime during the  
cycle will stop the dishwasher.  
Closing the doors will resume the  
automatic cycle where it left off.  
The cycle times are listed below:  
Wash  
Dwell  
= 48 seconds  
4 second  
=
Final rinse = 8 seconds  
7
POWER  
EXTENDED WASH  
CYCLE  
Note that the in-cycle light is lit during  
the automatic dishwasher cycle.  
OFF  
WASH  
RINSE PRESSURE  
13  
Download from Www.Somanuals.com. All Manuals Search And Download.  
INITIAL START-UP  
INITIAL START-UP (CONT.)  
8
Check Final Rinse  
Water Temperature  
Check the final rinse water temperature during  
the final rinse cycle.  
The final rinse water temperature gauge  
is located in the final rinse piping at the  
top of the dishwasher.  
The final rinse water temperature should be  
a minimum of 180°F/82°C for (MH-60,  
MH-6N). The optimum final rinse temperature  
for (MH-60, MH-6N) is 180-195°F/82-91°C.  
The MH-6L requires a minimum final  
rinse temperature of 120°F/49°C. However,  
a minimum final rinse temperature of  
140°F/60°C is optimum for the MH-6L.  
9
POWER  
EXTENDED WASH  
CYCLE  
Check Final Rinse  
Water Pressure  
The final rinse water pressure gauge  
should indicate a flowing pressure of  
20-22 PSI/138-151.8 kPa during the  
final rinse cycle for all models.  
OFF  
WASH  
RINSE PRESSURE  
A pressure reducing valve (PRV) is  
required if flow pressure exceeds  
20-22 PSI/138-151.8 kPa.  
14  
Download from Www.Somanuals.com. All Manuals Search And Download.  
INITIAL START-UP  
INITIAL START-UP (CONT.)  
10  
POWER  
EXTENDED WASH  
CYCLE  
The Extended Wash  
Operation  
The extended wash switch holds the  
dishwasher in a continuous wash mode  
for cleaning heavily soiled ware.  
OFF  
WASH  
RINSE PRESSURE  
Open and then fully close the dishwasher  
doors. The dishwasher will begin a wash  
cycle automatically.  
Push the Extended wash switch UP  
to the extended wash position.  
The dishwasher will remain in a continuous wash  
mode until the switch is flipped down. The dishwasher  
will resume the cycle and finish with a final rinse.  
11  
Complete the initial start-up  
Check all the plumbing for leaks. Also, check the drain plumbing for leaks and be sure that the drain will  
handle the drain water flow (15 gal/min-56.8 liters/min) from the dishwasher.  
After the drain and the plumbing connections are checked, turn off the dishwasher power switch.  
12  
Drain the dishwasher  
Make sure the dishwasher power switch is  
turned off. Drain the dishwasher by pulling  
the handle of the drain-overflow assembly  
straight up. Rotate the handle 90° to lock  
the drain in the up position.  
15  
Download from Www.Somanuals.com. All Manuals Search And Download.  
INITIAL START-UP  
INITIAL START-UP (Cont.)  
13  
Drain the dishwasher (Cont.)  
Be sure the drain-overflow seal is secure  
on the drain-overflow assembly.  
14  
Remove the scrap screens and check the drain  
located in the bottom of the dishwasher  
wash tank.  
Make sure that the building drain handles the  
water flow exiting the dishwasher.  
Clean the interior of the wash tank of any for-  
eign material.  
Leave the doors open to air dry the interior of  
the dishwasher.  
The initial start-up is complete.  
16  
Download from Www.Somanuals.com. All Manuals Search And Download.  
OPERATION  
OPERATION SUMMARY  
Action  
Result  
1. Push the On/Off power switch “UP” to  
the ON position. Dishwasher fills  
automatically.  
1. The power indicator light illuminates. The  
wash tank heater and the booster tank heater  
begin to heat.  
2. Wait approximately 10 minutes for the  
wash tank heater to heat the water. Then,  
check the reading on the wash water  
temperature gauge.  
2. The wash water temperature gauge should  
indicate a minimum of 150°F/66°C for MH-  
60, MH-6N and 120°F/60°C for MH-6L.  
3. Prescrap and load the ware into the  
dishrack.  
3. Ware should be placed edgewise in the peg  
rack. Cups and bowls should be placed upside  
down in the flat rack. Silverware should be  
spread evenly in a single layer in the flat rack.  
4. Open the doors.  
4. In-cycle light illuminates as the dishwasher  
begins a 60 second automatic cycle.  
The cycle times are listed below:  
Insert a dishrack of soiled ware.  
Fully close the doors.  
Opening the doors anytime during the  
automatic cycle stops the dishwasher.  
Closing the doors will resume the cycle  
where it left off.  
Wash  
Dwell  
= 48 seconds  
4 seconds  
=
Final rinse = 8 seconds  
5. The final rinse temperature gauge should  
indicate a minimum of 180°F/82°C for MH-  
60/6N. The optimum final rinse temperature  
range is between 180-195°F/82-90°C for  
MH60/6N. MH-6L optimum is 140°F/60°C.  
5. Check the final rinse temperature  
gauge reading during the 8 second  
final rinse cycle.  
6. The water pressure gauge should indicate a  
flowing pressure of 20-22 PSI/138-151.8 kPa.  
A pressure reducing valve (PRV) is required if  
flow pressure exceeds 20-22 PSI/138-151.8 kPa.  
6. Check the incoming water pressure  
during the 10 second final rinse cycle.  
7. The in-cycle light goes out.  
7. The 60 second automatic cycle ends.  
8. The 60 second automatic cycle begins again.  
8. Open the doors. Remove the clean rack.  
Insert another rack of soiled ware.  
Fully close the doors.  
9. Dishwasher wash tank drains completely.  
Periodic cleaning reduces detergent  
9. Turn power OFF at the dishwasher.  
Remove the drain-overflow assembly.  
Clean the scrap screens. Clean the  
dishwasher after each meal period or  
every two hours of operation.  
consumption and improves washing results.  
17  
Download from Www.Somanuals.com. All Manuals Search And Download.  
CLEANING  
CLEANING  
Cleaning your machine is the best maintenance that you can provide. Components that are not  
regularly flushed and cleaned do not perform well.  
The following schedules are the minimum requirements necessary for the proper performance of  
your machine. Intervals should be shortened whenever your machine is faced with abnormal  
working conditions, hard water, or multiple shift operations.  
Cleaning Schedule  
Every 2 Hours or After Each Meal Period  
1. Drain the dishwasher.  
2. Flush interior with fresh water.  
3. Clean scrap screens and pump intake screen.  
4. Clean spray arm nozzles.  
Every 8 Hours or at the End of the Day  
1. Drain the machine.  
2. Flush interior with fresh water.  
3. Clean scrap screens and pump intake screen.  
4. Clean spray arms.  
5. Thoroughly clean the exterior  
of machine.  
DO NOT HOSE DOWN  
WITH WATER.  
6. Reassemble the machine.  
7. Leave doors open to aid in drying.  
CAUTION:  
Do not leave water in wash  
tank overnight.  
!
18  
Download from Www.Somanuals.com. All Manuals Search And Download.  
CLEANING  
Deliming  
Your dishwasher should be delimed regularly depending on the mineral content of your  
water. Inspect the machine interior for mineral deposits and use a deliming solution for the  
best cleaning results.  
NOTE:  
Consult your chemical supplier for an appropriate deliming solution.  
!
WARNING:  
Deliming solutions or other acids must not come in contact with household  
bleach (sodium hypochlorite) or any chemicals containing chlorine, iodine,  
bromine, or fluorine.  
Mixing will cause hazardous gases to form.  
Skin contact with deliming solutions can cause severe irritation and possible  
chemical burns. Consult your chemical supplier for specific safety precautions.  
Deliming Process  
Model MH-60 and MH-6N  
1. Remove all dishes from machine.  
2. Remove any chemical pick-up tubes from their containers.  
3. Place each tube in a container of fresh water and prime the chemical lines for several  
minutes to thoroughly flush chemical from the lines. Leave pick-up tubes out of their  
containers.  
4. Drain the machine and refill with fresh water.  
5. Spray interior walls with delimimg solution and let sit for 5 or 10 minutes depending on  
amount of build-up. Add deliming solution to wash tank.  
Do not let chemicals sit for longer than 15 minutes.  
6. Close the doors to run an automatic cycle.  
7. Repeat Steps 4-6 if necessary.  
8. Lift the drain lever assembly and drain the machine.  
9. Refill the machine and run a complete cycle two additional times. Drain and refill the  
machine after each cycle to thoroughly flush any deliming solution from the interior of  
the machine.  
10. Flip the power switch to OFF.  
11. Drain machine.  
12. Deliming is complete.  
19  
Download from Www.Somanuals.com. All Manuals Search And Download.  
TROUBLESHOOTING  
TROUBLESHOOTING  
Perform the seven checks listed below in the event that your dishwasher does not operate  
as expected.  
1. All switches are ON  
2. Drain-overflow assemby is in place and seated  
3. Wash and rinse nozzles are clean  
4. Wash and rinse pipe assemblies are installed correctly  
5. Scrap screens are properly positioned  
6. Thermostat(s) are properly adjusted  
7. Detergent and rinse additive dispensers are adequately filled  
If a problem still exists, use the following table for troubleshooting  
CONDITION  
Machine will not start  
CAUSE  
SOLUTION  
Doors not closed ....................................  
Door safety switch faulty ......................  
Start switch faulty..................................  
Main switch off......................................  
Overload protector tripped ....................  
Make sure doors are fully closed  
Contact your service agency  
Contact your service agency  
Check disconnect at main panel  
Reset overload in Control Box  
Machine washes  
constantly  
Extended wash switch in........................  
extended wash position  
Push Extended wash switch  
down to the off position  
Low or no water  
Main water supply is turned off ............  
Drain-overflow assembly is not ............  
in place and seated  
Turn on house water supply  
Place and seat drain-overflow  
Machine doors not fully closed ............  
Faulty fill valve......................................  
Machine not filled initially....................  
Clogged strainer in fill valve ................  
Stuck or defective float..........................  
Close doors securely  
Contact your service agency  
Push Power switch UP to fill  
Clean or replace  
Check floats and clean  
Continuous water filling  
Wash motor not running  
Defective Circuit Board ........................  
Fill valve will not close..........................  
Drain-overflow not in place ..................  
Stuck or defective float switch ..............  
Contact your service agency  
Clean or replace  
Install drain-overflow assembly  
Inspect or replace float switch  
Overload protector tripped ....................  
Defective motor ....................................  
Reset overload in Control Box  
Contact your service agency  
Wash tank water  
temperature is low  
when in use  
Incoming water temperature..................  
at machine too low  
Raise temperature to:  
110-140°F/43-60°C for MH60  
180°F/82°C for MH-6N  
120°F/49°C-140°F/60°C for MH6L  
Check or replace  
Defective thermometer  
Defective thermostat..............................  
Check for proper setting  
or replace  
Defective heater element ......................  
Defective solenoid valve........................  
Heater elements ....................................  
have soil/lime buildup  
Check or replace  
Check or replace  
Clean and delime  
20  
Download from Www.Somanuals.com. All Manuals Search And Download.  
TROUBLESHOOTING  
TROUBLESHOOTING (CONT.)  
CONDITION  
CAUSE  
SOLUTION  
Insufficient pumped  
spray pressure  
Clogged pump intake screen..................  
Clogged spray pipe ................................  
Scrap screen full ....................................  
Low water level in tank..........................  
Pump motor rotation incorrect ..............  
Clean  
Clean  
Must be kept clean and in place  
Check drain-overflow assembly  
Reverse connection between L1  
and L2 in Control Cabinet  
Contact Service Agent  
Defective pump seal ..............................  
Insufficient final rinse  
or no final rinse  
Faulty pressure reducing valve ..............  
Improper setting on pressure ................  
reducing valve  
Clean or replace  
Set flow pressure at 20-22 PSI/  
138-151.8 kPa  
Clogged rinse nozzle and/or ..................  
pipe  
Clean  
Improper water line size ........................  
Have installer change to  
proper size  
Clogged strainer in fill valve ................  
Clean or replace  
Low final rinse  
temperature  
Low incoming water  
temperature ............................................  
Check the booster (MH60, MH6N)  
be sure the thermostat is set to  
maintain180°F/82°C temperature.  
MH6L check incoming water is set  
Min. 120°F/49°C-140°F/60°C.  
Check valve to be sure it is clean  
and operating  
Defective thermometer ..........................  
Check for proper setting or  
replace  
Poor washing results  
Detergent dispenser................................  
not operating properly  
Contact detergent supplier  
Insufficient detergents ..........................  
Wash water temperature ........................  
too low  
Wash arm clogged..................................  
Improperly scraped dishes ....................  
Ware being improperly ..........................  
placed in rack  
Contact detergent supplier  
See condition “Wash Tank  
Water Temperature” above  
Clean  
Check scraping procedures  
Use proper racks. Do not  
overload racks  
Improperly cleaned ................................  
equipment  
Unclog wash sprays and rinse  
nozzles to maintain proper  
pressure and flow conditions.  
Overflows must be open. Keep  
wash water as clean as possible.  
Clean and delime  
Heater elements ....................................  
have soil/lime buildup  
21  
Download from Www.Somanuals.com. All Manuals Search And Download.  
BASIC SERVICE  
BASIC SERVICE  
This Basic Service section does not cover all possible repair procedures. If you require additional  
service support, you may call your local service company or:  
Moyer Diebel National Service  
USA:  
1-800-858-4477  
Canada:  
1-800-263-5798  
Please have the Model and Serial Number of the machine ready when you call.  
Electrical Service  
NOTE:  
DO NOT USE CHASSIS GROUND WHEN PERFORMING VOLTAGE CHECKS.  
Doing so will result in false and inaccurate readings.  
PERFORM VOLTAGE CHECKS BY READING FROM THE HOT SIDE OF THE  
LINE AND NEUTRAL (any #2 or white wire).  
WARNING:  
!
!
USE EXTREME CAUTION when performing tests on energized circuits.  
WARNING:  
When repairing a circuit, disconnect the power at the main service disconnect switch and  
place a tag at the disconnect switch to indicate that work is being performed on the circuit.  
Troubleshooting  
Schematics  
Moyer Diebel places an electrical schematic in the control cabinet of every machine before it is  
shipped. Schematics are included at the back of this manual as well. Be aware that these  
schematics include options that may not apply to your machine. Options are enclosed in dashed  
lines with the words (IF USED) next to them on the schematic. Disregard any options that appear  
on the schematics which are not a part of your machine.  
Tools  
All electrical repairs can be made with: Standard set of hand tools  
Volt/Ohm Meter (VOM)  
Clip-on AC current tester  
Circuit Tests  
Use a clip-on AC current tester to check the motors and electric heaters.  
Use a VOM to test line voltages and the 115VAC control circuit.  
22  
Download from Www.Somanuals.com. All Manuals Search And Download.  
BASIC SERVICE  
Electrical Service (Cont.)  
Fuses —  
A
Refer to Fig. 12.  
There are two fuse blocks. A 3 pole block  
(A) is located in the main control cabinet.  
The (A) fuses protect the wash tank heater  
circuit. Booster heater circuits  
(MH-60 only) are not fused. A 2 pole  
fuse block is located on the machine base  
to protect the control circuit.  
To Replace a fuse:  
Turn the dishwasher main power switch  
off. Disconnect power to the machine at  
the main service disconnect switch.  
Replace the fuse. If the fuse blows again,  
DO NOT INCREASE THE FUSE SIZE.  
DETERMINE THE CAUSE OF THE OVERLOAD.  
Figure 12  
Wash tank heater fuses  
Control Cabinet  
Motor Overloads —  
The wash pump motor has an overload to protect it from  
line voltage electrical overloads. The overload disconnects  
120VAC power to the motor contactor coil.  
Switch Lever  
Refer to Fig. 13.  
Note the Switch Lever on the Overload.  
If the switch lever is off with the “0” showing  
then the overload has tripped.  
To Reset the Motor Overload:  
Flip the overload switch to the On position.  
A “1” should be visible on the switch lever.  
To Replace a Motor Overload:  
Disconnect the wires to the overload.  
Release the mounting catch on the front  
side of the overload. Push forward and lift out.  
Snap the new overload into place and reconnect  
the wires.  
Figure 13  
Motor Overload  
To adjust the overload setting:  
The screwdriver in Fig. 15 is positioned  
to adjust the motor overload AMP setting.  
Read the full load amps (FLA) motor amps on the motor  
nameplate. Turn setting to match the motor nameplate.  
23  
Download from Www.Somanuals.com. All Manuals Search And Download.  
BASIC SERVICE  
Solid State MH60/MH6N/MH6L Operating Instructions  
Automatic Operation  
1. Check that drain is closed and screens are clean and in place.  
2. Turn on main power to the machine.  
3. Flip machine control panel power switch to ON.  
4. Close doors.  
• Machine pauses 4 seconds to check water level.  
5. Machine fills for 110 seconds if float is down.  
6. Run machine through several cycles or wait for 10 minutes (on initial start up) for tempera-  
tures to stabilize.  
7. Open door, insert rack of dishes.  
8. Close doors. Automatic cycle begins.  
9. Machine cycle is:  
Wash = 48 secs.  
Dwell = 4 secs.  
Rinse = 8 secs.  
10. Open door, remove clean rack of dishes.  
11. Repeat for additional racks.  
• If Extended wash switch is operated, then machine will wash continually until Extended  
wash switch is taken off. Machine will immediately enter rinse cycle if more than 49 sec-  
onds has elapsed. If less than 49 seconds has elapsed when the extended wash is ended,  
then the machine will complete the remaining wash time and then finish with a final rinse.  
Troubleshooting Timer Circuit Board  
1.1 Introduction  
The following procedures are for determining whether or not the timer circuit board itself is faulty.  
In this part –  
• Checking the general condition of the circuit board.  
• Testing inputs.  
• Testing outputs.  
Special Tools  
• A voltmeter capable of reading DC and AC volts.  
1.2 Checking General Condition  
Before testing the inputs and outputs, you should first check that the board is receiving power.  
Turn on the power switch to the unit (do not start the unit, just turn on power to the unit). If red  
“Power” LED on board is illuminated, go directly to Step 1.3. When LED is not illuminated,  
then check that the following conditions are true:  
24  
Download from Www.Somanuals.com. All Manuals Search And Download.  
BASIC SERVICE  
Troubleshooting Timer Circuit Board (cont.)  
Power Terminals  
• Verify that the board is receiving power of 120 VAC at the terminals:  
– T2, marked “H” (AC Hot).  
– T1, marked “N” (AC Neutral).  
If either of these terminals is not receiving 120 VAC, then there is a problem elsewhere with  
the unit not receiving power.  
The Fuse (F1)  
• Verify that the circuit board fuse (F1) is good.  
If it is not, replace it.  
Red ‘Power’ LED  
• Verify that the red ‘power’ LED is illuminated.  
If it is not, and the previous 2 conditions are true, then the board is bad and should be  
replaced.  
1.3 Testing Board Inputs  
After you have verified that the circuit board is receiving power (as explained above), then test  
the board inputs. There are 4 board inputs:  
• Start Switch (not used on this model).  
• Door Safety Switch.  
• Float Switch.  
• Extended Wash Switch (if installed).  
Perform the following steps to test a board input:  
1. Set the voltmeter to measure DC volts.  
2. Place the negative (black) test probe on the “hot” terminal:  
• T2, marked “H”.  
3. Place the positive (red) test probe on the input terminal to be tested:  
• T7, marked “START SW” (for the start switch, not used on this model).  
• T8, marked “DOOR SW” (for the door safety switch).  
• T9, marked “FLOAT SW” (for the float switch).  
• T10, marked “EXT. WASH” (for the extended wash switch).  
4. Check the results on the voltmeter:  
• If switch is opened – the meter should read between 4.7 to 5.3 DC volts.  
• If the switch is closed – the meter should read between 0 to 1 DC volts.  
25  
Download from Www.Somanuals.com. All Manuals Search And Download.  
BASIC SERVICE  
1.4 Testing Board Outputs  
After you have verified that the circuit board is receiving power (as explained above), then test  
the board outputs. There are 4 board outputs:  
• Wash Cycle.  
• Rinse Cycle.  
• Heaters.  
• In-Cycle Lamp.  
Perform the following steps to test a board output:  
1. Set the voltmeter to measure AC volts.  
2. Place the negative (black) test probe on the “neutral” terminal:  
• T1, marked “N”.  
3. Place the positive (red) test probe on the output terminal to be tested:  
• T3, marked “WASH OUTPUT” (for the wash cycle) (doors must be closed before testing).  
• T4, marked “RINSE OUTPUT” (for the rinse cycle) (doors must be closed before testing).  
• T5, marked “HEATERS OUTPUT” (for the water heater).  
• T6, marked “LAMP OUTPUT” (for the in-cycle lamp indicator).  
4. Check the results on the voltmeter for the terminal you are testing:  
• For T3 – the meter should read 120 VAC whenever the unit is in-cycle and the “WASH”  
LED is illuminated on the circuit board.  
• For T4 – the meter should read 120 VAC whenever the unit is in a fill or rinse mode and  
the corresponding “FILL” or “RINSE” LED is illuminated on the circuit board.  
• For T5 – the meter should read 120 VAC whenever the power switch is on and the wash  
tank is full (i.e., the float switch is up).  
• For T6 – the meter should read 120 VAC whenever the machine is in-cycle.  
F1  
H
WASH  
OUTPUT  
T2  
N
T3  
RINSE  
T1  
POWER  
L1  
OUTPUT  
START SW.  
T4  
T7  
DOOR SW.  
JB1  
JB3  
HEATERS  
OUTPUT  
T8  
FLOAT SW.  
T5  
T9  
LAMP  
OUTPUT  
EXT. WASH  
U1  
L4  
L2  
L3  
T6  
T10  
JB2  
FILL  
RINSE  
WASH  
Figure 14  
Solid State  
Control Board  
26  
Download from Www.Somanuals.com. All Manuals Search And Download.  
BASIC SERVICE  
Models MH-60, MH-6N, and MH-6L use a float switch and circuit board  
to control tank fill and tank heat.  
For Model MH-60 only, the built-in booster heat circuit is also controlled  
by the float switch.  
Operation:  
1. When dishwasher main power switch is turned on (wash tank empty), the  
drain valve closes allowing cycle time to run for a minimum of 110 sec-  
onds to fill the tank.  
2. The float switch ball rises; its normally open contacts close.  
The fill circuit times out; the fill solenoid de-energizes, and  
the tank heat and booster heat energize.  
Figure 15  
Float Switch  
3. If water level drops below the float level, the float switch ball moves down; heat  
de-energizes. The fill solenoid energizes and the fill cycle runs for a minimum of 110  
seconds to refill the tank.  
4. If the tank is not full of water at the end of the 110-second fill cycle, then the machine  
will cycle again. When the float switch is satisfied, the fill cycle stops after completing  
its 110-second cycle.  
5. Refer to the float switch troubleshooting chart below (Fig. 16) for a quick guide to  
evaluating float switch problems.  
Wash  
Tank Fills Constantly  
NO  
NO  
Is Tank Full  
of Water?  
Check  
Drain  
YES  
Clean  
Float  
Assy  
Is the Float  
Ball Up?  
YES  
Is Heat ON  
when called  
for?  
NO  
Replace  
Float  
YES  
Figure 16  
Float Switch  
Troubleshooting Chart  
Check  
Solenoid  
Valve  
System  
Checks  
27  
Download from Www.Somanuals.com. All Manuals Search And Download.  
BASIC SERVICE  
Electrical Service (Cont.)  
Heater Element Wiring – Booster Tank and Wash Tank Heater Elements  
Refer to the illustrations and follow the steps below to properly install terminal jumpers and to  
make line power connections to a replacement element.  
Step 1. Hold the element assembly with the calrod coils facing toward you.  
Step 2. Match your element coil to Configuration A, B, C, or D.  
Step 3. Rotate your element coils to match the correct configuration.  
Step 4. Turn the element over and match your element to the correct terminal configuration.  
Step 5. Install terminal jumpers according to the illustration for your voltage requirement.  
Step 6. Install the element and make your line connections 1L1, 1L2, or 1L3 per the illustration.  
Configuration A  
Booster tank element  
View of calrod coils  
Terminal Connections View of element  
1L1  
1L3  
1L3  
1L3  
1L1  
1L2  
1L1  
1L1  
1L2  
1L2  
1L2  
208V/1 Phase  
208-240V/3 Phase  
Delta Connection  
480V/3 Phase  
575V/3 Phase  
Delta Connection  
208-240V/3 Phase  
Wye Connection for  
380-415V/3 Phase  
Configuration B  
Booster tank element  
View of calrod coils  
Terminal Connections View of element  
1L1  
1L1  
1L1  
1L2  
1L2  
1L3  
1L1  
1L2  
1L3  
1L3  
1L2  
208V/1 Phase  
208-240V/3 Phase  
Delta Connection  
480V/3 Phase  
575V/3 Phase  
Delta Connection  
208-240V/3 Phase  
Wye Connection for  
380-415V/3 Phase  
Configuration C  
Booster tank element  
View of calrod coils  
Terminal Connections View of element  
1L2  
1L1  
1L1  
1L1  
1L3  
1L1  
1L3  
1L3  
1L2  
1L2  
1L2  
208V/1 Phase  
208-240V/3 Phase  
Delta Connection  
480V/3 Phase  
575V/3 Phase  
Delta Connection  
208-240V/3 Phase  
Wye Connection for  
380-415V/3 Phase  
Configuration D  
Wash tank element  
View of calrod coils  
Terminal Connections View of element  
1L1  
1L1  
1L1  
1L1  
1L2  
1L3  
1L3  
1L2  
1L2  
1L3  
1L2  
208V/1 Phase  
208-240V/3 Phase  
Delta Connection  
480V/3 Phase  
575V/3 Phase  
Delta Connection  
208-240V/3 Phase  
Wye Connection for  
380-415V/3 Phase  
Figure 17  
Heater Element Wiring  
28  
Download from Www.Somanuals.com. All Manuals Search And Download.  
BASIC SERVICE  
Electrical Service (Cont.)  
Motor Connections —  
1. Models MH-60, MH-6N, and MH-6L are available in either single phase or 3 phase voltages.  
2. Motor rotation was set at the factory. For three phase machines, reversing the motor direction  
is done in the control cabinet by reversing the wires L1 and L2 on the disconnect side of the  
main electrical connection block. For single phase machines, motor rotation is changed at the  
motor connection plate on the rear of the single phase motor (if necessary).  
Refer to Fig. 20 for the proper wiring of the pump motor for single and three phase voltages.  
SINGLE PHASE - LOW VOLTAGE  
SINGLE PHASE - HIGH VOLTAGE  
LINE  
LINE  
L1  
L1  
J
J
3
3
2
8
8
4
4
LINE  
LINE  
2
L2  
L2  
Figure 18  
Pump Motor Wiring Diagrams  
208-240V  
THREE PHASE - LOW  
VOLTAGE  
480V  
THREE PHASE - HIGH  
VOLTAGE  
6
5
4
575V ONLY  
THREE PHASE  
6
5
4
9
3
8
2
7
1
9
3
8
2
7
1
3
2
1
LINE  
LINE  
LINE  
29  
Download from Www.Somanuals.com. All Manuals Search And Download.  
BASIC SERVICE  
MECHANICAL SERVICE  
Pump Seal Replacement  
1. Disconnect the power to the machine at the main breaker panel or fuse box.  
2. Drain the machine.  
3. Remove the front and side panels.  
4. Remove drain plug on the pump volute and drain the pump.  
5. Remove the pump hoses.  
6. Disconnect the wires to the motor at the motor junction box.  
7. Unbolt motor from machine base and remove the pump/motor assembly.  
8. Remove bolts on volute and carefully remove from the pump flange.  
9. Remove the impeller retaining bolt and nut from center of impeller.  
10. Lock the motor shaft with a wrench or pliers. The back of motor shaft is square.  
11. Turn the impeller counter-clockwise to remove from shaft (right hand threads).  
12. Remove the old seal and discard.  
13. Check seal seat in the pump flange and clean thoroughly.  
14. Press rubber seal/ceramic portion of seal assembly into the pump flange. Use a water  
soluble lubricant. Be careful to keep the ceramic clean.  
15. Install the rotating part of the seal on the shaft with the graphite surface toward the ceram-  
ic.  
Use a water soluble lubricant on the rubber seal part only (not the graphite).  
16. Reinstall impeller, and new flange gasket. Reinstall bolts. Reinstall drain plug.  
17. Reinstall the pump/motor assembly and reconnect the pump hoses.  
18. Fill the dishwasher with water.  
19. Check motor rotation by bump starting motor.  
Correct motor shaft rotation is clockwise when viewing motor from the rear.  
20. Test run and check for leaks.  
Gaskets  
Pump Flange  
Impeller  
Volute  
Washer  
Seal Assy.  
Bolt  
(B)  
Water  
Slinger  
Nut  
Plug  
Bolt  
(A)  
Backing Plate  
Mtg. Nut  
Backing Plate  
Figure 19  
Pump Seal Replacement  
30  
Download from Www.Somanuals.com. All Manuals Search And Download.  
REPLACEMENT PARTS  
REPLACEMENT  
PARTS  
31  
Download from Www.Somanuals.com. All Manuals Search And Download.  
REPLACEMENT PARTS  
1
1
2
3
8
9
10  
11  
10  
11  
12  
13  
11  
4
5
7
6
9
8
13  
14  
12  
12  
Figure 20 - MH-60/6N/6L  
Doors and Panels  
32  
Download from Www.Somanuals.com. All Manuals Search And Download.  
REPLACEMENT PARTS  
MH-60/6N/6L  
DOORS AND PANELS  
Fig. 20  
Part  
Item No. No.  
Part Description  
Qty.  
1
2
3
4
5
6
7
8
9
10  
11  
12  
13  
14  
325405  
327131  
321929  
321930  
112389  
322074  
321941  
108418  
109034  
108417  
100779  
0504822  
100763  
112587  
Side Door ......................................................................................  
Front Door......................................................................................  
RH Panel, No Cut Out ..................................................................  
Panel, Instrument............................................................................  
Decal, Control Panel ......................................................................  
Panel, Front Lower ........................................................................  
LH Panel w/Cut Out ......................................................................  
Plug Plastic ....................................................................................  
Washer 13/16 x 1-13/16 Plastic ....................................................  
Nut, Plastic ....................................................................................  
Screw 1/4-20 x 5/8 Truss Head......................................................  
Screw 8-32 x 1/2 Pan Head. ..........................................................  
Screw 10-32 x 1 Round Head........................................................  
Foot, Cast Grey ..............................................................................  
2
1
1
1
1
1
1
2
2
2
6
4
2
4
33  
Download from Www.Somanuals.com. All Manuals Search And Download.  
REPLACEMENT PARTS  
1
10  
13  
FRONT OF  
HOOD  
9
11  
6
12  
8
7
2
14  
12  
2
3
4
5
6
Figure 21 - MH-60/6N/6L  
Door Guides, Stops, and Lift Bracket  
Download from Www.Somanuals.com. All Manuals Search And Download.  
REPLACEMENT PARTS  
MH-60/6N/6L  
DOOR GUIDES, STOPS, AND LIFT BRACKET  
Fig. 21  
Part  
Item No. No.  
Part Description  
Qty.  
1
2
108053 Plug, Cornerpost ................................................................................  
107966 Nut, Grip 10-32 w/Insert .................................................................... 10  
2
3
4
5
6
327104 Bracket, Door Lift ..............................................................................  
100007 Screw 10-32 x 3/8" Truss Head..........................................................  
327103 Door Lift Bracket................................................................................  
100097 Scew 10-32 x 1/2" Truss Head ..........................................................  
108347 Guide, Door ........................................................................................  
1
4
1
2
6
7
8
9
108410 Gasket, Door Guide (26") .................................................................. 12  
107970 Screw 8-32 x 1 Filister........................................................................ 36  
10  
11  
12  
13  
14  
317345 Bracket, Door catch ..........................................................................  
325921 Door Catch..........................................................................................  
100073 Screw 1/4-20 x 1/2" ............................................................................  
100141 Nut, Grip 1/4-20..................................................................................  
108966 Door Handle........................................................................................  
1
1
2
2
1
Download from Www.Somanuals.com. All Manuals Search And Download.  
REPLACEMENT PARTS  
28  
30  
29  
2
1
30  
3
4
5
3
2
6
1
9
7
24  
26  
10  
8
5
6
27  
11  
9
12  
26  
25  
11  
13  
24  
26  
27  
10  
11  
24  
14  
10  
7
8
26  
25  
11  
24  
12  
23  
20  
10  
15  
13  
22  
14  
21  
20  
16  
17  
19  
18  
18  
Figure 22 - MH-60
Door Handle, Spring Assembly, and Safety Switch  
36  
Download from Www.Somanuals.com. All Manuals Search And Download.  
REPLACEMENT PARTS  
MH-60/6N/6L  
DOOR HANDLE, SPRING ASSEMBLY, AND SAFETY SWITCH  
Fig. 22 Part  
Item No. No.  
Part Description  
Qty.  
1
2
3
4
5
6
7
8
9
10  
11  
12  
13  
14  
15  
16  
17  
18  
19  
20  
21  
22  
23  
24  
25  
26  
27  
28  
29  
30  
112723 Bolt 5/16-18 x 15 Hex Head ..............................................................  
108066 Spring, Extension................................................................................  
107397 Block, Spring Hook ............................................................................  
0509166 Door Handle........................................................................................  
107437 Bolt M6 x 45MM Hex Head ..............................................................  
107396 Block, Upper Pivot..............................................................................  
107393 Pin, Pivot ............................................................................................  
0508864 Handle, Grip........................................................................................  
107395 Block, Lower Pivot ............................................................................  
107420 Nut, Plain M6......................................................................................  
107436 Screw M6 x 16MM Filister ................................................................  
107399 Support, Pivot Block ..........................................................................  
108368 Gasket, Backing..................................................................................  
304811 Plate, Backing ....................................................................................  
100740 Bolt 5/16-18 x 1 Hex Head ................................................................  
107966 Nut, Grip 10-32 w/Nylon Insert ........................................................  
322077 Guard, Splash......................................................................................  
100097 Screw 10-32 x 1/2 Truss Head............................................................  
0509264 Bushing, Side Door ............................................................................  
0509274 Nut, Acorn 5/16-18 SST ....................................................................  
0309167 Lift Bar, Door......................................................................................  
102376 Washer, Flat ........................................................................................  
104002 Bolt 5/16-18 x 1-1/2............................................................................  
100154 Nut, Plain 5/16-18 ..............................................................................  
106013 Washer, Lock 5/16 Split......................................................................  
102376 Washer 5/16 x 3/4 x 1/16....................................................................  
321927 Spring Anchor Bracket........................................................................  
0509199 Switch, Door Safety............................................................................  
0309451 Bracket, Switch ..................................................................................  
107967 Nut, Grip (1/4-20 w/Nylon Insert)......................................................  
2
2
2
1
4
2
2
2
2
8
6
2
2
2
2
8
2
8
2
2
2
2
2
4
2
4
1
1
1
2
37  
Download from Www.Somanuals.com. All Manuals Search And Download.  
REPLACEMENT PARTS  
1
2
1
2
3
4
2
3
4
3
4
2
3
4
Figure 23A – MH-60/6N/6L  
Straight Track Assembly  
6
2
6
8
6
1
6
7
6
7
8
9
10  
4
6
7
3
11  
7
8
9
7
10  
9
11  
5
10  
7
8
9
10  
Figure 23B – MH-60/6N/6L  
Corner Track Assembly  
38  
Download from Www.Somanuals.com. All Manuals Search And Download.  
REPLACEMENT PARTS  
MH-60/6N/6L  
STRAIGHT TRACK ASSEMBLY  
Fig. 23A  
Part  
Item No. No.  
Part Description  
Qty.  
1
2
3
4
0309472 Track, Rear..........................................................................................  
100073 Screw 1/4 -20 x 1/2 Truss Hd ............................................................  
106482 Washer, Lock ......................................................................................  
100003 Nut (1/4-20 Hex Hd) ..........................................................................  
1
8
8
8
MH-60/6N/6L  
CORNER TRACK ASSEMBLY  
Fig. 23B  
Part  
Item No. No.  
Part Description  
Qty.  
1
2
3
4
5
6
7
8
9
0309469 Guide, Right Hand..............................................................................  
0309472 Track, Rear..........................................................................................  
0309468 Guide, Left Hand ................................................................................  
0309470 Support, Rack......................................................................................  
0309471 Track, Front ........................................................................................  
106727 Screw (10-32 x 5/8 Flat Hd) ..............................................................  
107966 Nut, Grip (10-32 w/Nylon Insert) ......................................................  
100073 Screw 1/4 -20 x 1/2 Truss Hd ............................................................  
106482 Washer, Lock ......................................................................................  
100003 Nut (1/4-20 Hex Hd) ..........................................................................  
0309473 Spacer..................................................................................................  
1
1
1
1
1
6
6
8
8
8
2
10  
11  
39  
Download from Www.Somanuals.com. All Manuals Search And Download.  
REPLACEMENT PARTS  
2
3
7
8
1
5
6
4
9
5
7
2
10  
11  
10  
3
12  
13  
8
FRONT  
LEFT SIDE  
Figure 24 - MH-60/6N/6L  
Wash/Rinse Spray Piping  
40  
Download from Www.Somanuals.com. All Manuals Search And Download.  
REPLACEMENT PARTS  
MH-60/6/6L  
WASH/RINSE SPRAY PIPING  
Fig. 24  
Part  
Item No. No.  
Part Description  
Qty.  
1
2
3
4
5
6
7
8
9
10  
11  
12  
13  
324526 Rinse Manifold Weldment ..................................................................  
113027 Connector, Rinse Arm ........................................................................  
113028 Top Rinse Arm Connector ..................................................................  
0507445 Spindle, Wash Arm ............................................................................  
109864 Support, Wash Arm ............................................................................  
109781 Standpipe, Wash..................................................................................  
100736 Bolt 1/4-20 x 3/4 Hex Head................................................................  
107967 Nut, Grip 1/4-20..................................................................................  
109854 Gasket, Standpipe Wash......................................................................  
100740 Bolt 5/16-18 x 1" Hex Head ..............................................................  
106013 Washer, Lock 5/16 Split......................................................................  
102376 Washer, Flat ........................................................................................  
100154 Nut, Plain 5/16-18 ..............................................................................  
1
2
2
2
2
1
2
3
1
4
4
8
4
41  
Download from Www.Somanuals.com. All Manuals Search And Download.  
REPLACEMENT PARTS  
1
3
4
2
AFTER S/N D3858  
3
3
2
4
PRIOR TO S/N D3857  
3
5
6
7
8
Figure 25 - MH-60/6N/6L  
Wash/Rinse Spray Arms  
42  
Download from Www.Somanuals.com. All Manuals Search And Download.  
REPLACEMENT PARTS  
MH-60/6N/6L  
WASH/RINSE SPRAY ARMS  
Fig. 25  
Part  
Item No. No.  
Part Description  
Qty.  
1
2
0507443 Spindle, Rinse Arm ............................................................................  
0508376 Nozzle, Rinse Arm (MH-60, MH-6N Only) (Prior to S/N D3857) .. 12  
2
3
*4  
4
113514 Bearing, Rinse Arm (Replaces 112164) ............................................  
414111 Rinse Arm Assy. (Complete) (MH-60, MH-6N Prior to S/N D3857)  
414110 Rinse Arm Assy. (Complete)  
4
2
(MH-60, MH-6N only) (After S/N D3858)........................................  
0507444 Nut, Rinse Arm ..................................................................................  
109835 Screw (#8 x 1/2 Pan Hd) ....................................................................  
0707452-SWash Arm Assy (Includes 6 & 8) ......................................................  
0507446 Bearing, Wash Arm ............................................................................  
0507451 Nozzle Rinse Arm (SST) (Model MH-6L Only)  
2
2
4
2
2
5
6
7
8
9
(Prior to S/N D3857) .......................................................................... 12  
*10  
10  
414111 Rinse Arm Assy. (MH-6L only) (Complete) (Prior to D3857) ..........  
414111 Rinse Arm Assy. (MH-6L only) (Complete) (After S/N D3858) ......  
1
1
*
Part number 0707453 (MH-60, MH6N) and 0708899 (MH-6L) are no longer  
available as complete rinse arm assemblies. Replacement nozzles and bearings  
are still available for these assemblies. To replace the complete rinse arm assembly,  
order part number 414111.  
43  
Download from Www.Somanuals.com. All Manuals Search And Download.  
REPLACEMENT PARTS  
1
2
3
4
5
7
6
16  
8
9
16  
10  
11  
12  
13  
15  
14  
Figure 26 - MH-60/6N/6L  
Drain Assembly and Scrap Screens  
44  
Download from Www.Somanuals.com. All Manuals Search And Download.  
REPLACEMENT PARTS  
MH-60/6N/6L  
DRAIN ASSEMBLY AND SCRAP SCREENS  
Fig. 26  
Part  
Item No. No.  
Part Description  
Qty.  
1
2
3
4
5
6
7
8
9
10  
11  
12  
13  
14  
15  
16  
112393 Knob, Drain Lift ................................................................................  
112394 Rod Assy., Drain Lift..........................................................................  
112392 Guide, Drain Lift ................................................................................  
100097 SCREW (10-32 x 1/2" Truss Hd) ......................................................  
322159 Retainer, Overflow..............................................................................  
321939 Filler, Drain Plate (Retained By Spring Clip) ....................................  
322120 Filler, Drain Plate (Retained By Stud and Nut) (Not Shown)............  
100194 Nut, Grip (10-32 SST)........................................................................  
100141 Nut, Grip (1/4-20 SST) ......................................................................  
322006 Tube, Overflow....................................................................................  
107680 Seat Rubber, Overflow Tube ..............................................................  
205813 Drain Basket, Modified ......................................................................  
112044 Slip Nut ..............................................................................................  
112045 Washer, Tailpiece ................................................................................  
107473 Tailpiece..............................................................................................  
305164 Screen, Scrap ......................................................................................  
1
1
1
2
1
1
1
2
1
1
1
1
1
1
1
2
45  
Download from Www.Somanuals.com. All Manuals Search And Download.  
REPLACEMENT PARTS  
7
8
8
16  
5
7
16  
15  
Thermostat bracket detail  
17  
4
3
5
2
20  
18  
6
1
18  
19  
4
3
9
14  
11  
12  
13  
10  
Figure 27 - MH-60/6N/6L  
Wash Tank Heat and Thermostats  
46  
Download from Www.Somanuals.com. All Manuals Search And Download.  
REPLACEMENT PARTS  
MH-60/6N/6L  
WASH TANK HEAT AND THERMOSTATS  
Fig. 27  
Part  
Item No. No.  
Part Description  
Qty.  
1
2
3
4
5
6
7
8
9
10  
11  
12  
13  
14  
113622 Thermometer 4 Ft. Gas Filled (Replaces 108391) ............................  
109069 Thermostat W/Cap 110-220°F............................................................  
201041 Washer ................................................................................................  
201029 Nut, Lock 1/2" ....................................................................................  
322076 Dual Thermostat Bracket ..................................................................  
110561 Thermostat, Fixed High Limit ............................................................  
106482 Washer, Lock 1/4 Split SST ..............................................................  
100003 Nut, Plain 1/4-20 SST ........................................................................  
100740 Bolt 5/16-18 x 1 Hex Head ................................................................  
108345 Gasket 3 x 3-1/8 x 2"..........................................................................  
102376 Washer 5/16 x 3/4 x 1/16....................................................................  
106013 Washer, Lock 5/16 Split......................................................................  
100154 Nut, Plain 5/16-18 SST ......................................................................  
0509637 Heater 3KW 115V/1PH......................................................................  
113479 Heater 4.7KW 208-240/380-415V 1/3PH..........................................  
113480 Heater 4.7KW 460V/3PH ..................................................................  
113481 Heater 4.7KW 575V/3PH ..................................................................  
100007 Screw 10-32 X 3/8 Truss Head ..........................................................  
107966 Nut, Grip 10-32 W/Nylon Insert ........................................................  
111092 Float Switch ........................................................................................  
104882 Washer ................................................................................................  
107089 Nut, Jam 1/2 - 13 ................................................................................  
111151 C-Clip Float Switch ............................................................................  
1
1
3
3
1
1
4
4
4
1
8
4
4
1
1
1
1
4
4
1
2
1
2
15  
16  
17  
18  
19  
20  
47  
Download from Www.Somanuals.com. All Manuals Search And Download.  
REPLACEMENT PARTS  
F R O M F I L L V A L V E  
TO UPPER PIPING  
Figure 28- MH-60 Only  
Electric Booster and Thermostats  
48  
Download from Www.Somanuals.com. All Manuals Search And Download.  
REPLACEMENT PARTS  
MH-60 ONLY  
ELECTRIC BOOSTER AND THERMOSTATS  
Fig. 28  
Part  
Item No. No.  
Part Description  
Qty.  
1
2
3
4
100740 Bolt 5/16-18 x 1 Hex Head ................................................................  
102376 Washer, Flat 5/16 x 3/4 x 1/16............................................................  
108954 Nut, Grip 6-32 W/Insert......................................................................  
113604 Thermostat, High Limit ......................................................................  
2
2
2
1
110563 Compound, Heat Sink ........................................................................ A/R  
5
6
7
8
109069 Thermostat, Booster............................................................................  
100003 Nut, Plain 1/4-20 SST ........................................................................  
106482 Washer, Lock 1/4 Split ......................................................................  
111233 Heater 7.5KW 208-240/380-415V, 40° Rise (1 & 3 Phase) ..............  
108579 Heater 9KW 480V, 40° Rise (3 Phase Only) ....................................  
111122 Heater 9KW 575V, 40° Rise (3 Phase Only)......................................  
111266 Heater 18KW 208-240/380-415V, 70° Rise (1 & 3 Phase)................  
111267 Heater 18KW 480V, 70° Rise (3 Phase Only)....................................  
111600 Heater 18KW 575V, 70° Rise (3 Phase Only) ..................................  
109985 Seal, Electric Heater ..........................................................................  
100210 Plug 1/8 SST ......................................................................................  
0509042 Tank, Booster ......................................................................................  
1
3
3
1
1
1
1
1
1
1
1
1
9
10  
11  
12  
49  
Download from Www.Somanuals.com. All Manuals Search And Download.  
REPLACEMENT PARTS  
18  
17  
16  
15  
20  
4
2
19  
3
14  
13  
5
9
TO UPPER  
PIPING  
12  
8
11  
10  
2
6
5
1
5
5
7
23  
CUSTOMER  
WATER  
INLET  
Figure 29 - MH-60 Only  
Lower Fill Piping Assembly  
50  
Download from Www.Somanuals.com. All Manuals Search And Download.  
REPLACEMENT PARTS  
MH-60 ONLY  
LOWER FILL PIPING ASSEMBLY  
Fig. 29  
Part  
Item No. No.  
Part Description  
Qty.  
1
2
3
4
5
6
7
8
9
10  
11  
12  
13  
14  
15  
16  
17  
18  
19  
20  
21  
22  
23  
107550 Valve, Pressure Reducing 3/4"............................................................  
102444 Street Ell 3/4" NPT Brass ..................................................................  
102651 Nipple 3/4" x 2" Brass........................................................................  
111437 Valve 3/4" NPT Hot Water..................................................................  
100184 Nipple 3/4" NPT ................................................................................  
102525 Tee 3/4" x 1/2" x 3/4" Brass ..............................................................  
100571 Union 3/4" NPT Brass ........................................................................  
102388 Bushing Reducer 1/2" x 1/4" Brass....................................................  
112437 Valve, Needle 1/4" ..............................................................................  
102392 Bushing Reducer 3/4" x 1/2" Brass....................................................  
107419 Barb, Hose 1/2 NPT x 1/2 Hose ........................................................  
105994 Clamp, Hose........................................................................................  
1
2
1
1
3
1
1
1
1
1
1
1
107417 Hose, 1/2" I.D. .................................................................................. 9ft.  
107065 Connector, Male 1/4" O.D. x 1/4 NPT ..............................................  
107928 Tubing, High Density.......................................................................... 3ft.  
1
111100 Elbow, Female 1/4" O.D. x 1/8 NPT ..................................................  
109812 Gauge, Pressure 0-100 PSI ................................................................  
109816 Overlay, Gauge 20-30 PSI ................................................................  
108516 Coil, Solenoid Valve (120V) ..............................................................  
109903 Kit, Repair, 3/4" Solenoid Valve ........................................................  
324597 Booster Piping Stabilizer (Not Shown) ..............................................  
324598 Booster Piping Stabilizer Clip (Not Shown) ......................................  
110768 Strainer, Line 3/4" brass ....................................................................  
1
1
1
1
1
1
1
1
51  
Download from Www.Somanuals.com. All Manuals Search And Download.  
REPLACEMENT PARTS  
7
14  
17  
9
13  
3
12  
16  
4
3
18  
8
10  
11  
8
2
5
15  
1
6
WATER IN FROM  
LOWER PIPING  
Figure 30 - MH-60/6N Only  
Upper Fill Piping Assembly  
52  
Download from Www.Somanuals.com. All Manuals Search And Download.  
REPLACEMENT PARTS  
MH-60/6N ONLY  
UPPER FILL PIPING ASSEMBLY  
Fig. 30  
Part  
Item No. No.  
Part Description  
Qty.  
1
2
3
3
4
5
6
7
8
100156 Locknut 3/4" NPT Brass......................................................................  
100571 Union, 3/4" NPT Brass........................................................................  
102392 Bushing, Reducing 3/4" x 1/2" NPT Brass (Prior to S/N D3699)......  
100171 Bush Red Face 3/4" x 1/2" Brass (After S/N D3700) ........................  
100599 Cross, 3/4" NPT Brass ........................................................................  
108181 Bushing, Reducing 3/4" x 1/4" NPT Plastic ......................................  
107463 Plug 1/4" NPT Plastic..........................................................................  
102444 Elbow, Street 3/4" x 90 Brass..............................................................  
100184 Nipple, Close 3/4" NPT Brass ............................................................  
104429 Vacuum Breaker 3/4" ..........................................................................  
107419 Hose Barb 1/2" NPT............................................................................  
105994 Hose Clamp ........................................................................................  
0309426 Piping Support Bracket........................................................................  
104682 Thermometer 1/2"................................................................................  
102489 Nipple 3/4" x 2-1/2" NPT Brass. ........................................................  
102521 Tee 3/4" NPT Brass ............................................................................  
102505 Plug 3/4" NPT Brass ..........................................................................  
108349 Repair Kit 3/4" Vacuum Breaker (Not Shown) ..................................  
113223 Repair Kit 3/4" Vacuum Breaker (Not Shown)  
1
1
2
1
1
1
1
1
2
1
1
1
1
1
1
1
1
1
9
10  
11  
12  
13  
14  
15  
16  
*17  
*17  
(After S/N D3291) ..............................................................................  
102392 Bushing Reducing 3/4" x 1/2" NPT Brass (After S/N D3700) ..........  
1
1
18  
*
Use kit 900837 to repair either style (plastic or bronze) vacuum breakers.  
53  
Download from Www.Somanuals.com. All Manuals Search And Download.  
REPLACEMENT PARTS  
1
2
3
12  
TO UPPER  
PIPING  
4
5
9
8
CUSTOMER  
WATER IN  
7
5
11  
18  
6
17  
10  
16  
13  
15  
14  
Figure 31 - MH-6N/6L Only  
Lower Fill Piping Assembly  
54  
Download from Www.Somanuals.com. All Manuals Search And Download.  
REPLACEMENT PARTS  
MH-6N/6L ONLY  
LOWER FILL PIPING ASSEMBLY  
Fig. 31  
Part  
Item No. No.  
Part Description  
Qty.  
1
2
3
4
5
6
7
8
9
10  
11  
12  
13  
14  
15  
16  
17  
18  
19  
102444 Elbow, Street 3/4" NPT Brass ............................................................  
0309340 Plumbing, Support Bracket ................................................................  
110768 Line Strainer 3/4" Brass......................................................................  
111437 Valve, 3/4" NPT..................................................................................  
100184 Nipple, Close 3/4" NPT Brass............................................................  
102525 Tee 3/4" x 1/2" x 3/4" NPT Brass ......................................................  
102392 Bushing, Reducing 3/4" x 1/2" NPT Brass ........................................  
107419 Hose, Barb 1/2" NPT x 1/2" Hose......................................................  
105994 Hose Clamp ........................................................................................  
102388 Bushing, Reducing 1/2" x 1/4" NPT Brass ........................................  
112437 Needle, Valve 1/4" NPT Brass............................................................  
1
1
1
1
2
1
1
1
1
1
1
107417 Hose 1/2" ID ...................................................................................... 6ft  
101261 Street, Ell 1/4" NPT Brass..................................................................  
107065 Adapter, 1/4" OD x 1/4 MPT Plastic..................................................  
1
1
107928 Tubing, High Density.......................................................................... 3ft  
111100 Elbow, Female 1/4" OD x 1/8 NPT ....................................................  
109812 Gauge, Pressure 0-100 PSI ................................................................  
109765 Overlay, Gauge....................................................................................  
109903 Kit, Repair 3/4" Solenoid Valve..........................................................  
1
1
1
1
55  
Download from Www.Somanuals.com. All Manuals Search And Download.  
REPLACEMENT PARTS  
7
14  
18  
9
13  
3
12  
16  
4
3
19  
8
10  
11  
8
2
5
15  
17  
6
1
WATER IN FROM  
LOWER PIPING  
Figure 32 - MH-6L Only  
Upper Fill Piping Assembly  
56  
Download from Www.Somanuals.com. All Manuals Search And Download.  
REPLACEMENT PARTS  
MH-6L ONLY  
UPPER FILL PIPING ASSEMBLY  
Fig. 32  
Part  
Item No. No  
Part Description  
Qty.  
1
2
3
3
4
5
6
7
8
100548 Locknut 3/4" NPT SST ......................................................................  
100571 Union, 3/4" NPT Brass ......................................................................  
102392 Bushing, Reducing 3/4 NPT x 1/2" NPT Brass (Prior to S/N D3699) ....  
100171 Bush Red Face 3/4" x 1/2" Brass (After S/N D3700) ........................  
100599 Cross 3/4" NPT Brass ........................................................................  
108181 Bushing, Reducing 3/4" x 1/4" NPT Plastic ......................................  
107463 Plug 1/4" NPT Plastic ........................................................................  
102444 Elbow, Street 3/4" x 90 Brass ............................................................  
100184 Nipple, Close 3/4" Brass ....................................................................  
104429 Vacuum Breaker 3/4" NPT ................................................................  
107419 Hose, Barb 1/2" NPT x 1/2" Hose Brass............................................  
105994 Hose Clamp ........................................................................................  
0309426 Plumbing Support Bracket..................................................................  
104682 Thermometer 1/2" ..............................................................................  
102489 Nipple 3/4" NPT x 2-1/2" Brass ........................................................  
203183 Tee, 3/4" NPT Modified SST ............................................................  
102505 Plug 3/4" NPT SST ............................................................................  
107424 Plug 1/8" NPT Plastic ........................................................................  
108351 Repair Kit 3/4" Vacuum Breaker (Prior to S/N D3290) ....................  
113223 Repair Kit 3/4" Vacuum Breaker (After S/N D3291) ........................  
102392 Bushing Reducing 3/4" NPT x 1/2" NPT Brass (After S/N D3700)  
1
1
2
1
1
1
1
1
2
1
1
1
1
1
1
1
1
1
1
1
1
9
10  
11  
12  
13  
14  
15  
16  
17  
*18  
*18  
19  
*
Use kit 900837 to repair either style (plastic or bronze) vacuum breaker.  
57  
Download from Www.Somanuals.com. All Manuals Search And Download.  
REPLACEMENT PARTS  
Figure 33 - MH-60/6N/6L  
Pump Assembly  
58  
Download from Www.Somanuals.com. All Manuals Search And Download.  
REPLACEMENT PARTS  
MH60/6N/6L  
PUMP ASSEMBLY  
Fig. 33  
Part  
Item No. No.  
Part Description  
Qty.  
1
2
3
4
5
6
7
8
9
324580 Strainer................................................................................................  
107966 Nut, Grip 10-32 w/Nylon Insert ........................................................  
104203 Clamp, Hose........................................................................................  
104165 Clamp, Hose........................................................................................  
107340 Clamp, Hose........................................................................................  
112383 Hose Pump, Discharge........................................................................  
109562 Hose, Suction......................................................................................  
100734 Bolt 1/4-20 x 1/2" Hex Head..............................................................  
106482 Washer, Lock 1/4" Split......................................................................  
110247 Nut, Hex Jam 7/16-20 ........................................................................  
110248 Washer, Flat ........................................................................................  
107463 Plug 1/4" ............................................................................................  
1
1
2
1
1
1
1
1
1
1
1
1
10  
11  
12  
13  
14  
15  
16  
17  
18  
19  
20  
21  
22  
23  
24  
25  
26  
26  
26  
26  
27  
28  
29  
30  
31  
32  
107137 Bolt 10-32 x 7/8 Hex Head ................................................................ 11  
100194 Nut, Grip (10-32) (Not Shown) .......................................................... 11  
0501505 Washer, Lock Int SST #8.................................................................... 11  
109651 Volute ..................................................................................................  
113248 Impeller, SST ......................................................................................  
109653 Gasket, O-ring ....................................................................................  
111111 Pump Seal ..........................................................................................  
109649 Flange Assembly 1HP ........................................................................  
107690 Nut, Jam 3/8-16 ..................................................................................  
106407 Washer, Lock 3/8" Split......................................................................  
109648 Backing Plate ......................................................................................  
109654 Pump Slinger Washer..........................................................................  
110734 Stud 3/8-16 x 1-3/8 ............................................................................  
111145 Motor 1.4HP (208-240V/460V/60/3 ..................................................  
111144 Motor 1.4HP (115V/208-240V/60/1) ................................................  
112163 Motor 1.4HP (115V/208-240V/50/1) ................................................  
0507708 Motor 1.4HP (575V/60/3) ..................................................................  
100739 Bolt 5/16-18 x 3/4 Hex Head..............................................................  
102376 Washer, Flat 5/16 ................................................................................  
106013 Washer, Lock 5/16-18 SST ................................................................  
100142 Nut, Grip 5/16-18................................................................................  
100754 Screw, Flat 10-32 x 1/2 ......................................................................  
110270 Washer, Countersunk SST ..................................................................  
1
1
1
1
1
4
4
1
1
4
1
1
1
1
4
4
4
4
4
4
—
—
109645 Kit, Pump (Includes 16, 18, 20, 23, 24) ............................................  
451643 Pump, Motor Assembly  
Complete 1.4HP (208-240V/460V/60/3PH) ......................................  
451642 Pump, Motor Assembly  
Complete 1.4HP (115V/208-240V/60/1PH) ......................................  
0707549 Pump, Motor Assembly  
1
1
1
1
—
—
Complete 1.4HP (575V/60/3PH)........................................................  
59  
Download from Www.Somanuals.com. All Manuals Search And Download.  
REPLACEMENT PARTS  
POWER  
EXTENDED WASH  
CYCLE  
4
1
9
OFF  
3
2
WASH  
RINSE PRESSURE  
8
6
5
7
Figure 34 - MH-60/6N/6L  
Control Panel and Gauges  
60  
Download from Www.Somanuals.com. All Manuals Search And Download.  
REPLACEMENT PARTS  
MH-60/6N/6L  
CONTROL PANEL AND GAUGES  
Fig. 34  
Part  
Item No. No.  
Part Description  
Qty.  
1
2
3
4
5
6
0501361 Switch, On-Off....................................................................................  
112390 Lite, Red (Power)................................................................................  
112391 Lite, Amber (In-Cycle) ......................................................................  
0501361 Switch, Extended Wash ......................................................................  
113622 Thermometer, 4 Ft Gas Filled (Replaces 108391) ............................  
113662 Overlay, Wash 150°F (MH-60/6N) ....................................................  
112093 Overlay, Wash 120°F (MH-6L Only)..................................................  
109812 Gauge, Pressure 0-100 PSI................................................................  
109816 Overlay, 20-30 PSI..............................................................................  
112388 Decal, Control Panel ..........................................................................  
1
1
1
1
1
1
1
1
1
1
7
8
9
61  
Download from Www.Somanuals.com. All Manuals Search And Download.  
REPLACEMENT PARTS  
Figure 35 - MH-60/6N/6L  
Control Cabinet  
62  
Download from Www.Somanuals.com. All Manuals Search And Download.  
REPLACEMENT PARTS  
MH-60/6N/6L  
CONTROL CABINET  
Fig. 35  
Part  
Item No. No.  
Part Description  
Qty.  
1
900911 Kit* DM Board & Instructions (Prior to S/N D3857)........................  
113597 Timer Board (MH-60, MH-6N only) (After S/N D3858) ..................  
106925 Block, Fuse (30A, 3 Pole) ..................................................................  
100922 Fuse, 20A (MH60) 208-240V/3 ........................................................  
100913 Fuse, 10A (ALL) 480V/3 ..................................................................  
100913 Fuse, 10A (ALL) 380-415V/3............................................................  
100913 Fuse, 10A (ALL) 575V/3 ..................................................................  
100929 Fuse, 30A (MH6L, 6N) 115V/1 ........................................................  
100929 Fuse, 30A (MH6L, 6N) 208V/1 ........................................................  
111924 Contactor, Booster Heater (40A, 3 Pole) (MH60 Only) ....................  
111904 Contactor, Wash Tank Heater (40A, 3 Pole) (ALL) ..........................  
111702 Contactor, Wash Tank Heater (50A, 3 Pole) (MH6N)........................  
108122 Contactor, 1.4HP Wash Motor (12A, 3 Pole) (All Models) ..............  
110806 1.4HP Wash (MH60, MH6Ns) 208-240V/3  
1
1
1
3
3
3
3
2
2
1
1
1
1
2
3
3
3
3
3
3
4
5
5
6
7
Starter, Mtr OL GV2-M10 w/Aux......................................................  
110804 1.4HP Wash (All Models) 480V/,3  
Starter, Mtr OL GV2-M08 w/Aux......................................................  
110805 1.4HP Wash (All Models) 380-415V/3  
1
1
7
7
Starter, Mtr OL GV2-M08 w/Aux......................................................  
112626 Overload, Motor 1.4HP Wash (All Models) 575V/3..........................  
111632 Overload, Motor 1.4HP Wash (MH6L, 6N) 115V/1 ..........................  
111632 Overload, Motor 1.4HP Wash (ALL) 208-240V/1 ............................  
107366 Board, Terminal ..................................................................................  
112382 Relay (3PDT, 10A, 120VAC Coil)......................................................  
111068 Relay (2PDT, 10A, 120VAC Coil)......................................................  
0509564 Label, Chemical Connections (Not Shown) ......................................  
111833 Block, Terminal (3 Pole) (Main Power)..............................................  
109064 Transformer (208-240/1 & 3, 480/3)..................................................  
111464 Transformer (380-415V/3PH) ............................................................  
111521 Transformer (575V/3PH)....................................................................  
112424 Kit, Fuse Block (2 Pole)  
1
1
1
1
1
2
1
1
1
1
1
1
7
7
7
8
9
10  
11  
12  
13  
13  
13  
14  
(208-240V/1-3PH, 380-415V/3PH, 480V/3PH, 575V/3PH) ............  
112484 Fuse, 1.5A, 600V (ATDR) 208-240V/1-3PH ....................................  
112888 Fuse, 1.8A, 600V (ATDR) 380-415V/3PH ........................................  
112887 Fuse, .5A, 600V (ATDR) 480V/3PH..................................................  
112887 Fuse, .5A, 600V (ATDR) 575V/3PH..................................................  
106402 Block, Fuse (2 Pole) (115V Only)......................................................  
107289 Fuse, 2.5A, 250V (ATDR) 115V Only ..............................................  
1
2
2
2
2
1
2
15  
15  
15  
15  
16  
17  
—
103310 Wire Lug, Ground (Not Shown) ........................................................  
1
63  
Download from Www.Somanuals.com. All Manuals Search And Download.  
REPLACEMENT PARTS  
1
2
3
Figure 36 -  
Dishracks and PRV  
64  
Download from Www.Somanuals.com. All Manuals Search And Download.  
REPLACEMENT PARTS  
DISHRACKS AND PRV  
Part Description  
Fig. 36  
Part  
Item No. No.  
Qty.  
1
2
3
101273 Rack (Flat Bottom) ............................................................................  
101285 Rack (Peg) ..........................................................................................  
112387 Line Strainer/PRV Combo ..................................................................  
1
1
1
65  
Download from Www.Somanuals.com. All Manuals Search And Download.  
THIS PAGE  
INTENTIONALLY  
LEFT BLANK  
66  
Download from Www.Somanuals.com. All Manuals Search And Download.  
ELECTRICAL  
SCHEMATICS  
67  
Download from Www.Somanuals.com. All Manuals Search And Download.  
NOTE 3:  
NOTE 1: IF SUPPLY IS 115V, T1 IS NOT USED. WIRES #1 AND 2  
ARE CONNECTED TO THE FUSE BLAOCK IN PLACE OF #39 AND  
40.  
PER LOCAL ELECTRICAL CODE  
L1 L2 L3  
A: ON 115V MACHINES THE WASH TANK HEATER IS 3 kW.  
B: THE kW RATING OF THE BOOSTER ELEMENT IS DEPENDENT UPON THE  
VOLTAGE AND DEGREE RISE OF THE SYSTEM. SINGLE PHASE MACHINES W/  
ELEC. BOOSTER ARE 40° RISE ONLY. 40° RISE UNITS USE 7.5/10 OR 9 kW  
ELEMENTS. 70° RISE UNITS USE 13.5/18 OR 17.7 kW ELEMENTS.  
ON SINGLE PHASE  
MACHINES OMIT L3.  
NOTE 2: USED ON MACHINES WITH INDEPENDENT FRONT  
DOOR OPTION.  
L1 L2 L3  
1CR  
2CR  
1M  
DOOR SWITCH RELAY  
GND  
RINSE AID SIGNAL RELAY  
WASH MOTOR CONTACTOR  
WASH MOTOR OVERLOAD  
WASH MOTOR  
ON SINGLE PHASE  
MACHINES OMIT L3.  
! ATTENTION - VERY IMPORTANT ! - VERIFY CIRCUIT BOARD  
PART NUMBER AND JUMPER POSITION SETTINGS (JB1, JB2, JB3) PER  
MACHINE MODEL AND SERIAL NUMBER AS INDICATED IN TABLE  
BELOW. IMPROPER JUMPER SETTINGS MAY CAUSE ERRATIC  
OPERATION.  
1MOL  
1MTR  
L1  
L2  
L3  
1MOL  
24  
1M  
1M  
L1  
L2  
50  
27  
28  
AS  
ARC SUPPRESSOR  
50  
25  
BC1  
BCHL  
DS1  
DS2  
EW  
BOOSTER TANK CONTACTOR OR STEAM VALVE  
BOOSTER TANK HIGH LIMIT  
DOOR SAFETY SWITCH, FRONT DOOR  
DOOR SAFETY SWITCH, SIDE DOORS  
EXTENDED WASH SWITCH  
TIMER BOARD FUSE  
1MTR  
1MTR  
FUT  
FUT  
40  
MACHINE  
SERIAL NUMBER PART NUMBER  
BOARD  
JUMPER SETTINGS  
1MOL  
24  
MODEL  
JB1  
JB2  
JB3  
L1  
L2  
L3  
27  
28  
29  
39  
T1  
MH6N, MH6O  
UP TO D3857  
D3858 - UP  
ALL  
112676 REVC  
113597 REVG  
113597 REVG  
OPEN  
OPEN  
CLOSED  
CLOSED  
CLOSED  
25  
26  
H
H
F1  
MH6N, MH6O  
MH6L  
CLOSED  
OPEN  
OPEN  
OPEN  
T1 NOT USED WITH  
115V LINE SUPPLY  
SEE NOTE 1  
FSW  
FUH  
FUT  
HC1  
HCHL  
JB1  
FLOAT SWITCH  
TANK HEAT FUSES  
TRANSFORMER FUSES  
TANK HEAT CONTACTOR OR STEAM VALVE  
TANK HEAT HIGH LIMIT  
BLACK JUMPER SHOWN CLOSED.  
LIFT & REMOVE TO OPEN.  
1
2
ELECTRIC TANK HEAT IF USED  
WHITE BASE  
PRINTED CIRCUIT BOARD  
FUH  
HC1  
HC1  
HC1  
ON  
OFF  
RINSE TIME SELECT JUMPER  
CYCLE SELECT JUMPER  
CYCLE SELECT JUMPER  
POWER ON LIGHT  
L1  
30  
31  
33  
34  
JB2  
MPS  
4.7KW  
JB3  
CLOSED JUMPER SHOWN FROM SIDE  
L2  
LT1  
4
LT1  
SEE NOTE 3A  
LT2  
CYCLE LIGHT  
SEE NOTE 2  
DS1  
MPS  
RWV  
T1  
MAIN POWER SWITCH  
FUH  
FUH  
L1  
L2  
L3  
30  
31  
32  
33  
34  
DS2  
5
6
RINSE WATER VALVE  
1CR  
AS  
LINE:120V TRANSFORMER  
BOOSTER TANK THERMOSTAT  
WASH TANK THERMOSTAT  
4.7KW  
F
1MOL  
TSBC  
TSHC  
35  
5 X 20 MM  
1CRB  
FUSE 1A  
13  
16  
14  
FAST ACTING  
1M  
12  
15  
4
4
2
L1  
L2  
L3  
30  
31  
32  
33  
34  
35  
WASH  
OUTPUT  
T2  
T3  
T4  
RWV  
4.7KW  
POWER  
LED  
1CRC  
AS  
T
T7  
RINSE  
OUTPUT  
2CR  
TO TEST INPUTS T7, T8, T9, AND T10 A METER CAPABLE  
OF READING DC VOLTAGES MUST BE USED.  
START  
SWITCH  
ELECTRIC HEAT ONLY  
1CRA  
9
ELECTRIC BOOSTER HEAT IF USED (SEE NOTE 3B)  
BC1  
1.) SET METER TO READ DC VOLTAGE  
2.) PLACE BLACK LEAD TO T2  
JB3  
JB1  
DOOR  
SWITCH  
T8  
HCHL  
18  
17  
19  
21  
HC1  
HEATERS  
OUTPUT  
FSW  
10  
11  
T5  
T6  
3.) PLACE RED LEAD TO TERMINAL BEING TESTED  
i.e. PLACE RED LEAD TO T8 TO TEST DOOR SW.  
4.) AN OPEN SWITCH WILL READ 4.7-5.3VDC  
A CLOSED SWITCH WILL READ 0-1VDC  
FLOAT  
SWITCH  
TSHC  
L1  
36  
T9  
LAMP  
OUTPUT  
EXTENDED  
WASH  
AS  
EW  
L2  
T10  
LEDs  
37  
BCHL  
20  
2
RELAY  
(IF USED)  
BC1  
LT1  
FILL RINSE WASH  
JB2  
TSBC  
BC1  
BC1  
L1  
L2  
L3  
36  
37  
22  
38  
2CRA  
RINSE  
SIGNAL  
1
5
4
8
23  
NORMALLY CLOSED  
1M  
41  
DETERG.  
SIGNAL  
2
4
NORMALLY OPEN  
COMMON  
L1  
L2  
L3  
36  
37  
38  
9
12  
120V FAN SIGNAL  
IF USED  
13  
14  
TO CONTACTOR COIL  
SUPPLIED BY OTHERS  
COIL  
DIAGRAM STATE  
43  
POWER OFF  
DOORS CLOSED  
TANKS EMPTY  
END OF CYCLE  
H
G
CORRECTED JB1 SETTING, CLOSED SETTING WAS OPEN  
ADD ARC SUPPRESSOR TO 1CR  
2/3/04  
WB  
04MAR03 JAM  
CUSTOMER TO SUPPLY RATED VOLTAGE/PHASE/Hz,  
AS SPECIFIED PER ORDER,TO DISCONNECT SWITCH.  
ALL POWER SUPPLIED TO EACH CONNECTION POINT  
MUST COMPLY WITH ALL LOCAL ELECTRIC CODES.  
REV.  
DESCRIPTION  
ADDED ACR SUPPRESSORS  
REV.  
DESCRIPTION  
BY  
17MAR03 JAM  
4NOV99 JCN  
7MAR00 JCN  
BY  
JCN  
MH-6/0/L/N-E ELECTRONIC CONTROL  
STEAM/ELECTRIC - 1 & 3 PHASE  
DATE  
DATE  
G
B
C
D
E
F
REVISED SINGLE PHASE MOTOR OVERLOAD AND TANK HEAT HI LIMIT  
CHANGED TANK HEATER KW  
9AUG00  
REV.  
ADDED TROUBLESHOOTING REFERENCES  
REDRAWN MAIN POWER SWITCH  
30AUG02 WB  
1 NOV02 MJM  
DR.BY  
DATE  
SCALE  
SHEET  
NONE  
J.NEWTON  
20MAY99  
701602  
H
1
B
OF  
1
ADD JUMPER / SN INFORMATION.  
69  
Download from Www.Somanuals.com. All Manuals Search And Download.  

MTD Snow Blower 769 03244 User Manual
Mvix Portable Multimedia Player MV4000U User Manual
Nikon Digital Camera 26331 User Manual
Nortel Networks Network Card 4400 RELEASE 41 User Manual
NXP Semiconductors Stereo Amplifier SA58670A User Manual
Omron Air Compressor NE C30 E User Manual
Omron Healthcare Blood Pressure Monitor HEM 630 User Manual
Oricom Cordless Telephone ECO600 User Manual
Ozaki Worldwide Portable Speaker EM679 User Manual
Panasonic Car Stereo System C5303U User Manual