Hoshizaki Refrigerator F 450MAH User Manual

Hoshizaki America, Inc.  
Hoshizaki  
Modular Flaker  
Models  
F-450MAH(-C)  
SERVICE MANUAL  
“A Superior Degree  
of Reliability”  
®
Number: 73112  
Issued: 8-21-2009  
Download from Www.Somanuals.com. All Manuals Search And Download.  
Please review this manual. It should be read carefully before the icemaker is serviced or  
maintenanceoperationsareperformed. Onlyqualifiedservicetechniciansshouldserviceand  
maintain the icemaker. This manual should be made available to the technician prior to service  
ormaintenance.  
CONTENTS  
I. Specifications .................................................................................................................... 4  
1. F-450MAH .................................................................................................................... 4  
2. F-450MAH-C ................................................................................................................ 5  
II. General Information .......................................................................................................... 6  
1. Construction ................................................................................................................. 6  
2. Control Box Layout ....................................................................................................... 7  
3.Timer Board .................................................................................................................. 8  
[a] Solid-State Control ................................................................................................ 8  
[b] Timer Board ........................................................................................................... 8  
[c] Sequence .............................................................................................................. 9  
III.Technical Information ..................................................................................................... 12  
1. Water Circuit and Refrigeration Circuit........................................................................ 12  
2. Wiring Diagram........................................................................................................... 13  
[a] F-450MAH ........................................................................................................... 13  
[b] F-450MAH-C ....................................................................................................... 14  
3. Sequence of Electrical Circuit .................................................................................... 15  
4. Timing Chart............................................................................................................... 25  
5. Performance Data....................................................................................................... 28  
[a] F-450MAH ........................................................................................................... 28  
[b] F-450MAH-C ....................................................................................................... 29  
IV. Service Diagnosis.......................................................................................................... 30  
1. No Ice Production ....................................................................................................... 30  
2. Low Ice Production ..................................................................................................... 33  
3. Other........................................................................................................................... 34  
V. Removal and Replacement of Components ................................................................... 35  
1. Service for Refrigerant Lines ...................................................................................... 35  
[a] Refrigerant Recovery........................................................................................... 35  
[b] Evacuation and Recharge [R-404A] .................................................................... 35  
2. Brazing ....................................................................................................................... 36  
3. Removal and Replacement of Compressor................................................................ 37  
4. Removal and Replacement of Drier ........................................................................... 38  
5. Removal and Replacement of Expansion Valve......................................................... 39  
6. Removal and Replacement of Evaporator Assembly ................................................ 40  
7. Removal and Replacement of Fan Motor ................................................................... 42  
8. Removal and Replacement of Control Water Valve .................................................... 42  
9. Removal and Replacement of Flush Water Valve ....................................................... 43  
VI. Cleaning and Maintenance ........................................................................................... 44  
1. Preparing the Icemaker for Long Storage ................................................................... 44  
2. Cleaning and Sanitizing Instructions .......................................................................... 45  
[a] Cleaning Solution................................................................................................ 45  
[b] Cleaning Procedure ............................................................................................ 46  
[c] Sanitizing Solution............................................................................................... 47  
[d] Sanitizing Procedure - Initial................................................................................ 47  
[e] Sanitizing Procedure - Final ................................................................................ 48  
3. Maintenance Instructions............................................................................................ 50  
3
Download from Www.Somanuals.com. All Manuals Search And Download.  
I. Specifications  
1. F-450MAH  
AC SUPPLY VOLTAGE  
COMPRESSOR  
115/60/1  
120 V  
8.5 RLA  
1.6 FLA  
0.85FLA  
0.03A  
51 LRA  
1/6 HP  
50W  
GEAR MOTOR  
120 V  
115 V  
120 V  
20 A  
FAN MOTOR  
OTHER  
MAXIMUM FUSE SIZE  
MAX. HACR BREAKER (USA ONLY)  
MAX. CIRC. BREAKER (CANADA ONLY)  
MINIMUM CIRCUIT AMPACITY  
APPROXIMATE ICE PRODUCTION  
PER 24 HR.  
20 A  
20 A  
20 A  
Ambient  
WATER TEMP. (°F)  
70  
Temp.(°F)  
70  
50  
90  
lbs./day ( kg/day )  
*476 (216) 456 (207)  
416 (189) 397 (180)  
435 (197)  
379 (172)  
Reference without *marks  
80  
90  
362 (164) *355 (161) 330 (150)  
315 (143) 301 (137) *282 (128)  
100  
SHAPE OF ICE  
Flake  
ICE QUALITY  
Approx. 70%, Ice (90/70°F, Conductivity 200 µs/cm)  
N/A  
APPROXIMATE STORAGE CAPACITY  
ELECTRIC & WATER CONSUMPTION  
ELECTRIC W (kWH/100 lbs.)  
POTABLE WATER  
90/70°F  
915 (6.2)  
43 (12)  
70/50°F  
858 (4.3)  
57 (12)  
gal./24HR (gal./100 lbs.)  
EXTERIOR DIMENSIONS (WxDxH)  
EXTERIOR FINISH  
21"-7/8" x 27-3/8" x 21-61/64" (556 x 696 x 557.7mm)  
Stainless Steel, Galvanized Steel (Rear)  
Net 150 lbs. ( 68 kg ), Shipping 175 lbs. ( 80 kg )  
Permanent - Connection  
WEIGHT  
CONNECTIONS - ELECTRIC  
- WATER SUPPLY  
Inlet 1/2" FPT  
- DRAIN  
Outlet 3/4" FPT  
ICE MAKING SYSTEM  
Auger type  
HARVESTING SYSTEM  
ICE MAKING WATER CONTROL  
COOLING WATER CONTROL  
BIN CONTROL SYSTEM  
COMPRESSOR  
Direct Driven Auger ( 1/6 HP Gear Motor )  
Float Switch  
N/A  
Mechanical Bin Control ( Proximity Sw. )  
Hermetic, Model RS43C1E-CAA-219  
Air-cooled, Fin and tube type  
Copper Tube on Cylinder  
CONDENSER  
EVAPORATOR  
REFRIGERANT CONTROL  
REFRIGERANT CHARGE  
DESIGN PRESSURE  
Thermostatic Expansion Valve  
R-404A,  
1 lb.  
(455 g)  
High 427 PSIG, Low 230 PSIG  
High Voltage Cut-off Relay  
Internal Protector  
P.C. BOARD CIRCUIT PROTECTION  
COMPRESSOR PROTECTION  
GEAR MOTOR PROTECTION  
REFRIGERANT CIRCUIT PROTECTION  
LOW WATER PROTECTION  
ACCESSORIES - REQUIRED  
OPERATING CONDITIONS  
Manual reset Circuit Breaker or Fuse  
Auto-reset High Pressure Control Switch  
Float Switch and Timer  
Ice Storage Bin  
VOLTAGE RANGE  
104 - 127 V  
AMBIENT TEMP.  
45 - 100° F  
45 - 90° F  
WATER SUPPLY TEMP.  
WATER SUPPLY PRESSURE  
10 - 113 PSIG  
We reserve the right to make changes in specifications and design without prior notice.  
4
Download from Www.Somanuals.com. All Manuals Search And Download.  
2. F-450MAH-C  
AC SUPPLY VOLTAGE  
COMPRESSOR  
115/60/1  
120 V  
8.5 RLA  
1.6 FLA  
0.85FLA  
0.03A  
51 LRA  
1/6 HP  
50W  
GEAR MOTOR  
120 V  
115 V  
120 V  
20 A  
FAN MOTOR  
OTHER  
MAXIMUM FUSE SIZE  
MAX. HACR BREAKER (USA ONLY)  
MAX. CIRC. BREAKER (CANADA ONLY)  
MINIMUM CIRCUIT AMPACITY  
APPROXIMATE ICE PRODUCTION  
PER 24 HR.  
20 A  
20 A  
20 A  
Ambient  
WATER TEMP. (°F)  
70  
Temp.(°F)  
70  
50  
90  
lbs./day ( kg/day )  
*426 (193) 407 (185)  
368 (167) 350 (159)  
387 (176)  
333 (151)  
Reference without *marks  
80  
90  
317 (144) *310 (141) 287 (130)  
273 (124) 260 (118) *244 (111)  
100  
SHAPE OF ICE  
Cubelet  
ICE QUALITY  
Approx. 80%, Ice (90/70°F, Conductivity 200 µs/cm)  
N/A  
APPROXIMATE STORAGE CAPACITY  
ELECTRIC & WATER CONSUMPTION  
ELECTRIC W (kWH/100 lbs.)  
POTABLE WATER  
90/70°F  
956 (7.4)  
37 (12)  
70/50°F  
880 (5.0)  
51 (12)  
gal./24HR (gal./100 lbs.)  
EXTERIOR DIMENSIONS (WxDxH)  
EXTERIOR FINISH  
21"-7/8" x 27-3/8" x 21-61/64" (556 x 696 x 557.7mm)  
Stainless Steel, Galvanized Steel (Rear)  
Net 150 lbs. ( 68 kg ), Shipping 175 lbs. ( 80 kg )  
Permanent - Connection  
WEIGHT  
CONNECTIONS - ELECTRIC  
- WATER SUPPLY  
Inlet 1/2" FPT  
- DRAIN  
Outlet 3/4" FPT  
ICE MAKING SYSTEM  
Auger type  
HARVESTING SYSTEM  
ICE MAKING WATER CONTROL  
COOLING WATER CONTROL  
BIN CONTROL SYSTEM  
COMPRESSOR  
Direct Driven Auger ( 1/6 HP Gear Motor )  
Float Switch  
N/A  
Infrared Sensor  
Hermetic, Model RS43C1E-CAA-219  
Air-cooled, Fin and tube type  
Copper Tube on Cylinder  
Thermostatic Expansion Valve  
CONDENSER  
EVAPORATOR  
REFRIGERANT CONTROL  
REFRIGERANT CHARGE  
DESIGN PRESSURE  
R-404A,  
1 lb.  
(455 g)  
High 427 PSIG, Low 230 PSIG  
High Voltage Cut-off Relay  
Internal Protector  
P.C. BOARD CIRCUIT PROTECTION  
COMPRESSOR PROTECTION  
GEAR MOTOR PROTECTION  
REFRIGERANT CIRCUIT PROTECTION  
LOW WATER PROTECTION  
ACCESSORIES - REQUIRED  
OPERATING CONDITIONS  
Manual reset Circuit Breaker or Fuse  
Auto-reset High Pressure Control Switch  
Float Switch and Timer  
Ice Storage Bin  
VOLTAGE RANGE  
104 - 127 V  
AMBIENT TEMP.  
45 - 100° F  
45 - 90° F  
WATER SUPPLY TEMP.  
WATER SUPPLY PRESSURE  
10 - 113 PSIG  
We reserve the right to make changes in specifications and design without prior notice.  
5
Download from Www.Somanuals.com. All Manuals Search And Download.  
II. General Information  
1. Construction  
Water Supply  
Inlet  
Control Water Valve  
Bin Control  
Junction Box  
Condenser  
Fan Motor  
Compressor  
Drier  
Ice Chute  
Evaporator  
Flush Water  
Valve  
Control Box  
Gear Motor  
6
Download from Www.Somanuals.com. All Manuals Search And Download.  
2. Control Box Layout  
Note: The above component names are identical with the wiring label, but not with  
the parts list.  
7
Download from Www.Somanuals.com. All Manuals Search And Download.  
3. Timer Board  
[a] Solid-State Control  
1) A HOSHIZAKI exclusive solid-state control is employed in the self-contained flaker  
icemakers.  
2) A printed circuit board (hereafter called “timer board”) includes a stable and high  
quality control system.  
3) All models are pre-tested and factory-adjusted.  
[b] Timer Board  
CAUTION  
1. Fragile, handle very carefully.  
2. A timer board contains CMOS (Complementary Metal-Oxide Semicon-  
ductor) integrated circuits, which are susceptible to failure due to static  
discharge. It is especially important to use an anti-static wrist strap when  
handling or replacing the board.  
3. Do not touch the electronic devices on the board or the back of the  
board to prevent damage to the board.  
4. Do not change wiring and connections. Especially, never misconnect  
terminals.  
5. Do not fix the electronic devices or parts on the board in the field. Always  
replace the whole board assembly when it goes bad.  
The icemaker is controlled by the timer board for the following purposes:  
1) To prevent the gear motor and the compressor from starting or stopping  
simultaneously.  
2) To reduce remaining ice in the refrigeration casing.  
3) To protect the unit in case of low water and low water pressure.  
4) To protect the unit in case the bin control causes chattering.  
8
Download from Www.Somanuals.com. All Manuals Search And Download.  
Fig. 1  
[c] Sequence  
Fig. 2  
Download from Www.Somanuals.com. All Manuals Search And Download.  
PART CODE  
437305-01  
H2AA144C01  
24 VAC 50/60Hz  
60 15 sec.  
MODEL  
RATING  
T1  
T2  
90 22 sec.  
T3  
150 45 sec.  
T4  
T5  
T6  
1 sec. or less  
6.7 sec. 70%  
6.7 sec. 70%  
Fig. 3  
10  
Download from Www.Somanuals.com. All Manuals Search And Download.  
Functions of Terminals  
1) Terminals 1, 2  
Power supply AC 24V.  
2) Terminals 3, 4  
Control X1 (GM) and X2 (CM) Relays.  
When closed, energize X1 (GM) in 1 sec. and X2 (CM) in 60 sec.  
When opened, de-energize X1 (GM) in 150 sec. and X2 (CM) in 90 sec.  
3) Terminals 5, 6  
Control X1 (GM) and X2 (CM) Relays.  
When opened, de-energize X1 (GM) and X2 (CM) immediately.  
When closed again, energize X1 (GM) in 1 sec. and X2 (CM) in 60 sec.  
4) Terminals 7, 8, 9  
X1 (GM) contacts.  
8 is a movable contact, 7 is a make contact, and 9 is a break contact.  
5) Terminals 10, 11  
Control X2 (CM) Relays.  
When opened, de-energize X2 (CM) immediately.  
When closed, energize X2 (CM) immediately.  
Note: 1. X2 Relay is a single pole, normally open relay, and its terminals are mounted  
on the relay itself.  
2. The above operation times are median. See Fig. 3 for details.  
11  
Download from Www.Somanuals.com. All Manuals Search And Download.  
III. Technical Information  
1. Water Circuit and Refrigeration Circuit  
12  
Download from Www.Somanuals.com. All Manuals Search And Download.  
2. Wiring Diagram  
[a] F-4
13  
Download from Www.Somanuals.com. All Manuals Search And Download.  
[b] F-450MAH-C  
14  
Download from Www.Somanuals.com. All Manuals Search And Download.  
3. Sequence of Electrical Circuit  
[a] When power switch is moved to “ON” position and flush switch to “ICE” position,  
water starts to be supplied to reservoir.  
15  
Download from Www.Somanuals.com. All Manuals Search And Download.  
[b] When reservoir has been filled, gear motor starts immediately.  
16  
Download from Www.Somanuals.com. All Manuals Search And Download.  
[c] Compressor starts about 60 sec. after gear motor starts.  
17  
Download from Www.Somanuals.com. All Manuals Search And Download.  
[d] Bin control operates, and about 6 sec. later, compressor and gear motor stop  
simultaneously.  
18  
Download from Www.Somanuals.com. All Manuals Search And Download.  
[e] Low water (except water-cooled model).  
19  
Download from Www.Somanuals.com. All Manuals Search And Download.  
[f] When flush switch is moved to “FLUSH” position, flush water valve opens and  
flushes reservoir and evaporator.  
20  
Download from Www.Somanuals.com. All Manuals Search And Download.  
[g] When flush timer operates (for 21 min. every 12 hours), flush water valve opens  
and flushes reservoir and evaporator.  
21  
Download from Www.Somanuals.com. All Manuals Search And Download.  
[h] When 208-230V are supplied to circuit protect relay, it protects the circuit from being  
miswired. If the power supply is properly connected, the contact of circuit protect  
relay does not move even when the coil is energized.  
22  
Download from Www.Somanuals.com. All Manuals Search And Download.  
[i] When pressure switch opens, power supply to the control board is cut off causing the  
compressor and gear motor to turn off immediately.  
23  
Download from Www.Somanuals.com. All Manuals Search And Download.  
[j] When input voltage is too low (less than 70%) gear motor fuse (1.5A) is blown  
causing compressor and gear motor to turn off immediately.  
24  
Download from Www.Somanuals.com. All Manuals Search And Download.  
Miswiring. Circuit Protect Relay operates.  
Proper wiring. The unit starts.  
4. Timing Chart  
BIN CONTROL  
OFF ON  
1. CIRCUIT PROTECT  
RELAY  
ON  
OFF  
UPPER  
LOWER  
BOTTOM  
2. WATER LEVEL  
ON  
UPPER  
OFF  
3. FLOAT  
SWITCH  
ON  
LOWER  
OFF  
ON  
4. WATER CONTROL  
RELAY  
OFF  
5. CONTROL WATER  
VALVE  
ON  
OFF  
1 - 2  
2 - 3  
6. FLUSH TIMER  
FLUSH  
ICE  
7. FLUSH SWITCH  
8. FLUSH WATER  
VALVE  
ON  
OFF  
ON  
9. BIN CONTROL  
OFF  
1 sec  
6 sec  
1 sec  
10. GEAR MOTOR  
RELAY  
ON  
OFF  
ON  
11. GEAR MOTOR  
OFF  
ON  
12. FAN MOTOR  
OFF  
60 sec  
60 sec  
ON  
13. COMPRESSOR  
OFF  
14. PRESSURE  
SWITCH  
ON  
OFF  
25  
Download from Www.Somanuals.com. All Manuals Search And Download.  
LOW WATER  
FLUSH TIMER  
1. CIRCUIT PROTECT  
RELAY  
ON  
OFF  
UPPER  
2. WATER LEVEL  
LOWER  
BOTTOM  
ON  
UPPER  
3. FLOAT  
OFF  
SWITCH  
ON  
LOWER  
OFF  
ON  
4. WATER CONTROL  
RELAY  
OFF  
ON  
5. CONTROL WATER  
VALVE  
OFF  
1 - 2  
2 - 3  
6. FLUSH TIMER  
21 min every 12 hr  
FLUSH  
ICE  
7. FLUSH SWITCH  
ON  
8. FLUSH WATER  
VALVE  
OFF  
ON  
9. BIN CONTROL  
OFF  
150 sec  
150 sec  
1 sec  
1 sec  
10. GEAR MOTOR  
RELAY  
ON  
OFF  
ON  
11. GEAR MOTOR  
OFF  
ON  
12. FAN MOTOR  
OFF  
90 sec  
60 sec  
90 sec  
60 sec  
ON  
13. COMPRESSOR  
OFF  
ON  
14. PRESSURE  
SWITCH  
OFF  
26  
Download from Www.Somanuals.com. All Manuals Search And Download.  
FLUSH SWITCH  
PRESSURE SWITCH  
FLUSH  
ICE  
OFF  
ON  
1. CIRCUIT PROTECT  
RELAY  
ON  
OFF  
UPPER  
2. WATER LEVEL  
LOWER  
BOTTOM  
ON  
UPPER  
3. FLOAT  
OFF  
SWITCH  
ON  
LOWER  
OFF  
ON  
4. WATER CONTROL  
RELAY  
OFF  
ON  
5. CONTROL WATER  
VALVE  
OFF  
1 - 2  
2 - 3  
6. FLUSH TIMER  
FLUSH  
ICE  
7. FLUSH SWITCH  
ON  
8. FLUSH WATER  
VALVE  
OFF  
ON  
9. BIN CONTROL  
OFF  
150 sec  
1 sec  
1 sec  
10. GEAR MOTOR  
RELAY  
ON  
OFF  
ON  
11. GEAR MOTOR  
OFF  
ON  
12. FAN MOTOR  
OFF  
60 sec  
90 sec  
60 sec  
ON  
13. COMPRESSOR  
OFF  
14. PRESSURE  
SWITCH  
ON  
OFF  
27  
Download from Www.Somanuals.com. All Manuals Search And Download.  
5. Performance Data  
[a] F-450MAH  
APPROXIMATE  
ICE PRODUCTION  
PER 24 HR.  
Ambient  
Temp. (°F)  
70  
Water Temp. (°F)  
70  
50  
90  
484  
424  
372  
327  
879  
896  
912  
937  
0
220  
192  
169  
148  
- -  
462  
406  
362  
313  
885  
901  
918  
947  
58  
209  
184  
164  
142  
- -  
442  
389  
341  
294  
890  
907  
928  
956  
55  
201  
176  
155  
133  
- -  
80  
90  
lbs./day kg/day  
100  
70  
APPROXIMATE ELECTRIC  
CONSUMPTION  
80  
- -  
- -  
- -  
90  
- -  
- -  
- -  
watts  
100  
70  
- -  
- -  
- -  
APPROXIMATE WATER  
CONSUMPTION PER 24 HR.  
0
220  
192  
169  
148  
-16  
-14  
-14  
-13  
15.8  
18.0  
20.1  
22.8  
2.0  
2.1  
2.3  
2.6  
209  
184  
164  
142  
-16  
-14  
-13  
-13  
15.8  
18.0  
20.1  
22.8  
2.0  
2.1  
2.3  
2.6  
80  
53  
201  
176  
155  
-16  
-16  
-14  
-13  
15.8  
18.0  
20.1  
22.8  
2.0  
2.1  
2.3  
2.6  
51  
49  
90  
47  
45  
43  
gal./day l/day  
100  
70  
41  
39  
38  
EVAPORATOR OUTLET TEMP  
3
3
3
80  
3
7
7
90  
7
7
9
°F °C  
100  
70  
9
9
9
HEAD PRESSURE  
225  
256  
286  
324  
28  
225  
256  
286  
324  
28  
225  
256  
286  
324  
28  
80  
90  
PSIG kg/cm²G  
100  
70  
SUCTION PRESSURE  
80  
31  
31  
31  
90  
33  
33  
33  
PSIG kg/cm²G  
100  
37  
37  
37  
TOTAL HEAT OF REJECTION 4724 BTU/h (AT 90°F /WT 70°F)  
We reserve the right to make changes in specifications and design without prior notice.  
28  
Download from Www.Somanuals.com. All Manuals Search And Download.  
[b] F-450MAH-C  
APPROXIMATE  
ICE PRODUCTION  
PER 24 HR.  
Ambient  
Temp. (°F)  
70  
Water Temp. (°F)  
70  
50  
90  
430  
380  
135  
300  
883  
906  
928  
953  
52  
195  
170  
150  
135  
--  
410  
365  
325  
290  
891  
913  
936  
961  
49  
185  
165  
150  
130  
--  
395  
350  
310  
270  
898  
921  
944  
964  
47  
180  
160  
140  
120  
--  
80  
90  
lbs./day kg/day  
100  
70  
APPROXIMATE ELECTRIC  
CONSUMPTION  
80  
--  
--  
--  
90  
--  
--  
--  
watts  
100  
70  
--  
--  
--  
APPROXIMATE WATER  
CONSUMPTION PER 24 HR.  
195  
170  
150  
135  
-16  
-16  
-13  
-11  
15.8  
18.1  
20.3  
22.8  
2
185  
165  
150  
130  
-16  
-13  
-13  
-11  
15.8  
18.1  
20.3  
22.8  
2
180  
160  
140  
120  
-16  
-13  
-11  
-11  
15.8  
18.1  
20.3  
22.8  
2
80  
46  
44  
42  
90  
16  
39  
37  
gal./day l/day  
100  
70  
36  
35  
32  
EVAPORATOR OUTLET TEMP  
3
3
3
80  
3
9
9
90  
9
9
12  
°F °C  
100  
70  
12  
12  
123  
225  
257  
289  
325  
28  
HEAD PRESSURE  
225  
257  
289  
325  
28  
225  
257  
289  
325  
28  
80  
90  
PSIG kg/cm²G  
100  
70  
SUCTION PRESSURE  
80  
31  
2.2  
2.4  
2.6  
2
2.2  
2.4  
2.6  
31  
2.2  
2.4  
2.6  
90  
34  
2.2  
37  
34  
PSIG kg/cm²G  
100  
37  
37  
TOTAL HEAT OF REJECTION 5150 BTU/h (AT 90°F /WT 70°F)  
We reserve the right to make changes in specifications and design without prior notice.  
29  
Download from Www.Somanuals.com. All Manuals Search And Download.  
IV. Service Diagnosis  
1. No Ice Production  
PROBLEM  
[1] The icemaker will  
not start.  
POSSIBLE CAUSE  
REMEDY  
a) Power Supply  
1. OFF position.  
1. Move to ON position.  
2. Loose connection.  
3. Bad contacts.  
2. Tighten.  
3. Check for continuity  
and replace.  
4. Blown fuse.  
1. Off position.  
2. Bad contacts.  
4. Replace.  
b) Power Switch  
(Control Box)  
1. Move to ON position.  
2. Check for continuity  
and replace.  
c) Fuse (Control Box)  
1. Blown out.  
1. Check for short circuit  
and replace.  
d) Circuit Protect Relay 1. Miswiring.  
1. Check power supply  
voltage and wire  
properly.  
e) Flush Timer  
f) Flush Switch  
g) Transformer  
1. Flushing out.  
2. Bad contacts.  
1. Wait for 21 minutes.  
2. Check for continuity  
and replace.  
1. Move to ICE position.  
1. FLUSH position.  
2. Bad contacts.  
2. Check for continuity  
and replace.  
1. Coil winding opened. 1. Replace.  
h) Control Water Valve 1. Coil winding opened. 1. Replace.  
i) Shut-off Valve  
1. Closed.  
1. Open.  
2. Water failure.  
2. Wait till water is  
supplied.  
j) Plug and Receptacle 1. Disconnected.  
(Control Box)  
1. Connect.  
2. Terminal out of Plug 2. Insert Terminal back in  
or Receptacle.  
position  
[2] Water does not  
stop, and the  
icemaker will not  
start  
a) Water Control Relay 1. Contacts fused.  
1. Replace.  
2. Coil winding opened. 2. Replace.  
1. Bad contacts. 1. Check for continuity  
and replace.  
b) Float Switch  
2. Float does not move 2. Clean or replace.  
freely.  
c) Flush Water Valve  
d) Hoses  
1. Valve seat clogged  
and water leaking.  
1. Disconnected.  
1. Clean or replace  
1. Connect.  
[3] Water has been  
supplied, but the  
icemaker will not  
start.  
a) Water Control Relay 1. Bad contacts.  
1. Check for continuity  
and replace.  
1. Check for continuity  
and replace.  
2. Clean Axle and its  
corresponding holes  
or replace Bin Control.  
b) Bin Control  
1. Bad contacts.  
2. Activator does not  
move freely.  
30  
Download from Www.Somanuals.com. All Manuals Search And Download.  
PROBLEM  
POSSIBLE CAUSE  
REMEDY  
c) Gear Motor Relay  
1. Coil winding opened. 1. Replace.  
2. Bad contacts.  
1. Broken.  
2. Check for continuity  
and replace.  
1. Replace.  
d) Control Timer  
(Printed Circuit  
Board)  
e) Gear Motor Protect 1. Coil winding opened. 1. Replace.  
Relay  
2. Bad contacts.  
1. Blown Fuse.  
2. Check for continuity  
and replace.  
[4] Water has been  
supplied. Fan Motor  
starts, but  
a) Gear Motor Fuse  
(Bussman GMD  
1.5A)  
1. See 3. [3]. Find out the  
cause and replace the  
Fuse.  
Compressor and  
Gear Motor will not  
start.  
b) Thermal Protector  
(Gear Motor)  
2. Bad contacts.  
2. Check for continuity  
and replace.  
[5] Gear Motor starts,  
but Compressor will  
not start or operates  
intermittently  
a) X2 Relay on Control 1. Bad contacts.  
Timer  
1. Check for continuity  
and replace.  
2. Coil winding opened. 2. Replace Timer.  
b) Starter  
1. Bad contacts.  
1. Check for continuity  
and replace.  
2. Coil winding opened. 2. Replace.  
3. Loose connections.  
1. Defective.  
3. Tighten.  
1. Replace.  
c) Start Capacitor or  
Run Capacitor  
d) Compressor  
1. Loose connections.  
1. Tighten.  
2. Replace.  
2. Motor winding  
opened or grounded.  
3. Motor Protector  
tripped.  
3. Find out the cause of  
overheat or  
overcurrent.  
e) Power Supply  
1. Circuit Ampacity too  
low.  
1. Install a larger-sized  
conductor.  
[6] Gear Motor and  
Compressor start,  
but operate  
a) Pressure Switch  
1. Dirty Air Filter or  
Condenser.  
1. Clean.  
2. Ambient temperature 2. Get cooler.  
intermittently  
too warm.  
3. Fan not rotating.  
3. See "3. [1] a) Fan  
Motor."  
4. Refrigerant  
overcharged.  
4. Recharge.  
5. Refrigerant line or  
components plugged.  
5. Clean and replace  
drier.  
6. Bad contacts.  
6. Check for continuity  
and replace.  
7. Loose connections.  
7. Tighten.  
31  
Download from Www.Somanuals.com. All Manuals Search And Download.  
PROBLEM  
POSSIBLE CAUSE  
REMEDY  
[7] Gear Motor and  
Compressor start  
but no ice is  
a) Refrigerant Line  
1. Gas leaks.  
1. Check for leaks with a  
leak detector. Reweld  
leak, replace drier and  
charge with  
produced.  
refrigerant. The  
amount of refrigerant  
is marked on  
Nameplate or Label.  
2. Refrigerant line  
clogged.  
2. Replace the clogged  
component.  
b) Shut-off Valves on 1. Closed.  
Condensing Unit  
1. Open.  
32  
Download from Www.Somanuals.com. All Manuals Search And Download.  
2. Low Ice Production  
PROBLEM  
[1] Low ice production  
POSSIBLE CAUSE  
REMEDY  
1. See "1. [5] a)  
Refrigerant Line."  
a) Refrigerant Line  
1. Gas leaks.  
2. Refrigerant line  
clogged.  
2. Replace the clogged  
component.  
3. Overcharged.  
3. Recharge.  
1. Clean.  
b) High-side Pressure  
1. Dirty Air Filter or  
Condenser.  
Too High  
2. Ambient temperature 2. Get cooler.  
too warm.  
3. Fan rotating too  
slow.  
3. See "3 [1] a) Fan  
Motor."  
4. Condensing unit out 4. Check condensing  
of order.  
unit.  
c) Expansion Valve  
(not adjustable)  
1. Low-side pressure  
1. Replace.  
too low.  
2. Low-side pressure  
too high.  
2. See if Expansion  
Valve Bulb is mounted  
properly, and replace  
the valve if necessary.  
33  
Download from Www.Somanuals.com. All Manuals Search And Download.  
3. Other  
PROBLEM  
[1] Abnormal noise  
POSSIBLE CAUSE  
REMEDY  
1. Replace.  
a) Fan Motor  
1. Bearing worn out.  
2. Fan blade deformed. 2. Replace fan blade.  
3. Fan blade does not  
move freely.  
1. Bearings worn out,  
or cylinder valve  
broken.  
3. Replace.  
1. Replace.  
b) Compressor  
2. Mounting pad out of 2. Reinstall.  
position.  
c) Refrigerant Lines  
1. Rub or touch lines or 1. Replace.  
other surfaces.  
d) Gear Motor (Ice  
Making)  
1. Bearing or Gear  
worn out / damaged.  
1. Replace.  
e) Evaporator  
1. Low-side pressure  
too low.  
1. See if Expansion  
Valve Bulb is mounted  
properly, and replace  
the valve if necessary.  
2. Scale on inside wall 2. Remove Auger. Use  
of Freezing Cylinder.  
"SCALE AWAY" or  
"LIME-A-WAY"  
solution to clean  
periodically. If the  
water is found hard by  
testing, install a  
softener.  
[2] Overflow from  
Reservoir (Water  
does not stop.)  
a) Water Supply  
1. Water pressure too  
high.  
1. Install a pressure  
Reducing Valve  
b) Control Water Valve 1. Diaphragm does not 1. Clean or replace.  
close.  
c) Float Switch  
1. Bad contacts.  
1. Check for continuity  
and replace.  
[3] Gear Motor Fuse  
blows or circuit  
breaker trips  
a) Power Supply  
Voltage  
1. Too high or too low. 1. Connect the unit to a  
power supply of  
proper voltage.  
b) Evaporator Assy  
c) Bin Control  
1. Bearings or Auger  
worn out.  
1. Replace Bearing or  
frequently  
Auger.  
1. Bad contacts.  
1. Check for continuity  
and replace.  
2. Activator does not  
move freely.  
2. Clean Axle and its  
corresponding holes  
or replace Bin Control.  
34  
Download from Www.Somanuals.com. All Manuals Search And Download.  
V. Removal and Replacement of Components  
IMPORTANT  
1. The Polyol Ester (POE) oils used in R-404A units can absorb moisture  
quickly. Therefore it is important to prevent moisture from entering the  
system when replacing or servicing parts.  
2. Always install a new filter drier every time the sealed refrigeration system  
is opened.  
3. Do not leave the system open for longer than 15 minutes when replacing  
or servicing parts.  
1. Service for Refrigerant Lines  
[a] Refrigerant Recovery  
The icemaker unit is provided with two refrigerant access valves - one on the low-side and  
one on the high-side line. Using proper refrigerant practices recover the refrigerant from the  
access valves and store it in an approved container. Do not discharge the refrigerant into  
the atmosphere.  
[b] Evacuation and Recharge [R-404A]  
1) Attach charging hoses, a service manifold and a vacuum pump to the system. Be sure  
to connect charging hoses to both high-side and low-side access valves.  
IMPORTANT  
The vacuum level and vacuum pump may be the same as those for current  
refrigerants. However, the rubber hose and gauge manifold to be used for  
evacuation and refrigerant charge should be exclusively for POE oils.  
2) Turn on the vacuum pump. Never allow the oil in the vacuum pump to flow backward.  
3) Allow the vacuum pump to pull down to a 29.9" Hg vacuum. Evacuating period  
depends on pump capacity.  
4) Close the low-side valve and high-side valve on the service manifold.  
5) Disconnect the vacuum pump, and attach a refrigerant service cylinder to the high-side  
line. Remember to loosen the connection, and purge the air from the hose. See the  
nameplate for the required refrigerant charge. Hoshizaki recommends only virgin  
refrigerant or reclaimed refrigerant which meets ARI Standard No. 700-88 be used.  
35  
Download from Www.Somanuals.com. All Manuals Search And Download.  
6) A liquid charge is recommended for charging an R-404A system. Invert the service  
cylinder. Open the high-side, service manifold valve.  
7) Allow the system to charge with liquid until the pressures balance.  
8) If necessary, add any remaining charge to the system through the low-side. Use a  
throttling valve or liquid dispensing device to add the remaining liquid charge  
through the low-side access port with the unit running.  
9) Close the two refrigerant access valves, and disconnect the hoses and service  
manifold.  
10) Cap the access valves to prevent a possible leak.  
2. Brazing  
WARNING  
1. Refrigerant R-404A itself is not flammable at atmospheric pressure and  
temperatures up to 176°F.  
2. Refrigerant R-404A itself is not explosive or poisonous. However, when  
exposed to high temperatures (open flames) R-404A can be  
decomposed to form hydrofluoric acid and carbonyl fluoride both of  
which are hazardous.  
3. Always recover the refrigerant and store it in an approved container. Do  
not discharge the refrigerant into the atmosphere.  
4. Do not use silver alloy or copper alloy containing arsenic.  
5. Do not use R-404A as a mixture with pressurized air for leak testing.  
Refrigerant leaks can be detected by charging the unit with a little  
refrigerant, raising the pressure with nitrogen and using an electronic  
leak detector.  
Note: All brazing-connections are clear-paint coated. Sandpaper the brazing-connec  
tions before unbrazing the components. Use a good abrasive cloth to remove  
coating.  
36  
Download from Www.Somanuals.com. All Manuals Search And Download.  
3. Removal and Replacement of Compressor  
IMPORTANT  
Always install a new drier every time the sealed refrigeration system is  
opened. Do not replace the drier until after all other repair or replacement  
has been made.  
1) Unplug the icemaker.  
2) Remove the panels.  
2) Remove the terminal cover on the compressor, and disconnect the compressor  
wiring.  
3) Recover the refrigerant and store it in an approved container, if required by an  
applicable law.  
4) Remove the discharge, suction, and access pipes from the compressor using  
brazing equipment.  
WARNING  
When repairing a refrigerant system, be careful not to let the burner flame  
contact any electrical wires or insulation.  
5) Remove the bolts and rubber grommets.  
6) Slide and remove the compressor. Unpack the new compressor package. Install  
the new compressor.  
7) Attach the rubber grommets of the prior compressor.  
8) Sandpaper the discharge, suction and access pipes.  
9) Place the compressor in position, and secure it using the bolts.  
10) Remove plugs from the discharge, suction and access pipes.  
11) Braze the access, suction and discharge lines (Do not change this order),  
while purging with nitrogen gas flowing at the pressure of 3-4 PSIG.  
12) Install the new drier.  
37  
Download from Www.Somanuals.com. All Manuals Search And Download.  
13) Check for leaks using nitrogen gas (140 PSIG) and soap bubbles.  
14) Evacuate the system, and charge it with refrigerant. See the nameplate for the  
required refrigerant charge and type.  
15) Connect the terminals to the compressor, and replace the terminal cover in its  
correct position.  
16) Replace the panels in their correct position.  
17) Plug in the icemaker.  
4. Removal and Replacement of Drier  
IMPORTANT  
Always install a new drier every time the sealed refrigeration system is  
opened. Do not replace the drier until after all other repair or replacement  
has been made.  
1) Unplug the icemaker.  
2) Remove the panels.  
3) Recover the refrigerant and store it in an approved container, if required by an  
applicable law.  
4) Remove the drier using brazing equipment.  
5) Install the new drier with the arrow on the drier in the direction of the refrigerant flow.  
Use nitrogen gas at the pressure of 3-4 PSIG when brazing the tubings.  
6) Check for leaks using nitrogen gas (140 PSIG) and soap bubbles.  
7) Evacuate the system, and charge it with refrigerant. See the nameplate for the  
required refrigerant charge and type.  
8) Replace the panels in their correct position.  
9) Plug in the icemaker.  
38  
Download from Www.Somanuals.com. All Manuals Search And Download.  
5. Removal and Replacement of Expansion Valve  
IMPORTANT  
Sometimes moisture in the refrigerant circuit exceeds the drier capacity  
and freezes up at the expansion valve. Always install a new drier every  
time the sealed refrigeration system is opened. Do not replace the drier  
until after all other repairs or replacement have been made.  
1) Unplug the icemaker.  
2) Remove the panels.  
3) Recover the refrigerant and store it in an approved container, if required by an  
applicable law.  
4) Remove the expansion valve bulb at the evaporator outlet.  
5) Remove the expansion valve cover, and remove the expansion valve using  
brazing equipment.  
6) Braze the new expansion valve with nitrogen gas flowing at the pressure of 3-4  
PSIG.  
WARNING  
Always protect the valve body by using a damp cloth to prevent the valve  
from overheating. Do not braze with the valve body exceeding 250°F.  
7) Install the new drier.  
8) Check for leaks using nitrogen gas (140 PSIG) and soap bubbles.  
9) Evacuate the system. Charge it with refrigerant. See the nameplate for the required  
refrigerant charge and type.  
10) Attach the bulb to the suction line. Be sure to secure the bulb using a band and  
to insulate it.  
11) Place the expansion valve cover in position.  
12) Replace the panels in their correct position.  
13) Plug in the icemaker.  
39  
Download from Www.Somanuals.com. All Manuals Search And Download.  
6. Removal and Replacement of Evaporator Assembly  
1) Drain the water from the evaporator by switching the flush switch to “FLUSH” on the  
control box.  
2) Unplug the icemaker.  
3) Remove the panels.  
4) Remove the three thumbscrews and take off the spout from the evaporator.  
Cutter  
5) Loosen the cutter by a wrench and remove it.  
6) Remove the cylinder gasket at the top of the evaporator.  
Extruding Head  
7) Remove the three socket head cap screws and lift off the extruding head.  
8) Replace the bearing inside the extruding head if it exceeds the wear tolerance of  
0.02” or is scratched.  
Note: Replacing the bearing requires a bearing press adaptor. If it is not available,  
replace the whole extruding head.  
Auger  
9) Lift out the auger. If the area in contact with the bearing is worn or the blade is  
scratched, replace the auger.  
Evaporator  
Note: Skip the following steps 10) through 12) when the evaporator does not need  
replacement.  
10) Recover the refrigerant and store it in an approved container, if required by an  
applicable law.  
IMPORTANT  
Always install a new drier every time the sealed refrigeration system is  
opened. Do not replace the drier until after all other repair or replacement  
has been made.  
40  
Download from Www.Somanuals.com. All Manuals Search And Download.  
11) Remove the bulb of the expansion valve.  
12) Disconnect the brazing-connections of the expansion valve and the copper tube-  
low side from the evaporator, using brazing equipment.  
13) Remove the two truss head machine screws and the bracket securing the  
evaporator.  
14) Disconnect the three hoses from the evaporator.  
15) Remove the four socket head cap screws securing the evaporator with the  
bearing-lower.  
16) Lift off the evaporator.  
Bearing-Lower and Mechanical Seal  
17) The mechanical seal consists of two parts. One moves along with the auger, and the  
other is fixed on the bearing-lower. If the contact surfaces of these two parts are worn  
or scratched, the mechanical seal may cause water leaks and should be  
replaced.  
18) Remove the O-ring on the bearing-lower.  
19) Remove the four bolts and the bearing-lower from the gear motor. Replace the  
bearing inside the bearing-lower, if it exceeds the wear tolerance of 0.02" or is  
scratched.  
Note: Replacing the bearing requires a bearing press adaptor. If it is not available,  
replace the whole bearing-lower.  
Gear Motor  
20) Remove the coupling-spline on the gear motor shaft.  
21) Remove the three bolts securing the gear motor.  
22) Assemble the removed parts in the reverse order of the above procedure.  
WARNING  
Be careful not to scratch the surface of the O-ring, or it may cause water  
leaks. Handle the mechanical seal with care not to scratch nor to  
contaminate its contact surface.  
41  
Download from Www.Somanuals.com. All Manuals Search And Download.  
23) When replacing the evaporator:  
(a) Braze the new evaporator with nitrogen gas flowing at the pressure of 3-4 PSIG.  
(b) Replace the drier.  
(c) Check for leaks using nitrogen gas (140 PSIG) and soap bubbles.  
(d) Evacuate the system. Charge it with refrigerant. See the nameplate for required  
refrigerant charge and type.  
24) Replace the panels in their correct position.  
25) Plug in the icemaker.  
7. Removal and Replacement of Fan Motor  
1) Unplug the icemaker.  
2) Remove the panels.  
3) Remove the wire connectors from the fan motor leads.  
4) Remove the fan motor bracket and fan motor.  
5) Install the new fan motor.  
6) Replace the fan motor bracket and the wire connectors.  
7) Replace the panels in their correct position  
8) Plug in the icemaker.  
8. Removal and Replacement of Control Water Valve  
1) Unplug the icemaker.  
2) Remove the panels.  
3) Close the water supply line shut-off valve.  
4) Disconnect the terminal from the control water valve.  
5) Loosen the fitting nut on the control water valve Inlets, and remove the control water  
valve. Do not lose the packings inside the fitting nut.  
42  
Download from Www.Somanuals.com. All Manuals Search And Download.  
6) Remove the water supply hose from the control water valve.  
7) Install the new control water valve.  
8) Assemble the removed parts in the reverse order of the above procedure.  
9) Open the water supply line shut-off valve.  
10) Check for water leaks.  
11) Replace the panels in their correct position.  
12) Plug in the icemaker.  
9. Removal and Replacement of Flush Water Valve  
1) Turn off the power supply.  
2) Remove the panels.  
3) Close the water supply line shut-off valve.  
4) Remove the clamp and disconnect the hose from the flush water valve that attaches to  
the evaporator.  
Note: Water may still remain inside the evaporator. Be sure to drain the water into the  
drain pan.  
5) Disconnect the flush water valve from the tube connected to the plastic tee leading to  
the drain hose.  
6) Disconnect the terminals from the flush water valve.  
7) Remove the flush water valve from the frame or bracket.  
8) Connect the new flush water valve back onto the frame or bracket.  
9) Connect the tube from the plastic tee to the new flush water valve.  
10) Connect the hose to the flush water valve and secure it with the clamp.  
11) Pour water into the reservoir, and check for water leaks on the flush water valve.  
12) Open the water supply line shut-off valve.  
13) Turn on the power supply.  
43  
Download from Www.Somanuals.com. All Manuals Search And Download.  
14) Move the flush switch to the “ICE” position.  
15) Check for water leaks.  
16) Move the flush switch to the “FLUSH” position, and make sure water is flushing.  
17) Move the flush switch to the “ICE” position.  
18) Replace the panels in their correct position.  
VI. Cleaning and Maintenance  
IMPORTANT  
Ensure all components, fasteners and thumbscrews are securely in place after  
any maintenance or cleaning is done to the equipment.  
1. Preparing the Icemaker for Long Storage  
WARNING  
When shutting off the icemaker for an extended time, drain out all water from  
the water line and remove the ice from the storage bin. The storage bin should  
be cleaned and dried. Drain the icemaker to prevent damage to the water  
supply line at sub-freezing temperatures, using air or carbon dioxide. Shut off  
the icemaker until the proper ambient temperature is resumed.  
1) Run the icemaker with the water supply line shut-off valve closed.  
2) Open the drain valve and blow out the water inlet line by using air pressure.  
3) Turn off the power supply.  
4) Remove the front panel.  
5) Move the flush switch on the control box to  
the “FLUSH” position.  
6) Turn on the power supply, and then drain out all  
water from the water line.  
7) Turn off the power supply.  
8) Turn off the power switch on the control box.  
44  
Download from Www.Somanuals.com. All Manuals Search And Download.  
9) Replace the front panel in its correct position.  
10) Close the drain valve.  
11) Remove all ice from the storage bin, and  
clean the bin.  
2. Cleaning and Sanitizing Instructions  
WARNING  
1. HOSHIZAKI recommends cleaning this unit at least once a year. More  
frequent cleaning, however, may be required in some existing water  
conditions.  
2. To prevent injury to individuals and damage to the icemaker, do not use  
ammonia type cleaners.  
3. Always wear liquid-proof gloves to prevent the cleaning and sanitizing  
solutions from coming into contact with skin.  
[a] Cleaning Solution  
Dilute 4.8 fl. oz. (142 ml) of recommended cleaner Hoshizaki “Scale Away” or  
“LIME-A-WAY” (Economics Laboratory, Inc.) with 0.8 gallons (3 l) of warm water. This is a  
minimum amount. Make more solution if necessary.  
IMPORTANT  
For safety and maximum effectiveness, use the solution immediately after  
dilution.  
45  
Download from Www.Somanuals.com. All Manuals Search And Download.  
[b] Cleaning Procedure  
The cleaning process will remove lime deposits from the water system.  
1) Remove the front panel and top panel, then turn off the power supply.  
2) Close the water supply line shut-off valve.  
3) Remove all ice from the storage bin.  
4) Move the flush switch to the “FLUSH” position.  
5) Turn on the power supply and drain out all water from the water line.  
6) Turn off the power supply.  
7) Remove the strap connecting the spout to the chute assembly.  
8) Remove the thumbscrews securing the spout and lift it off.  
9) Pour the cleaning solution over the extruding head until the evaporator assembly and the  
reservoir are filled and the solution starts to overflow into the drain pan.  
Note: If there is excess scale on the extruding head, fill the evaporator assembly and  
reservoir as described above, then use a clamp on the reservoir hose between the  
reservoir and evaporator assembly to block flow. Pour additional cleaning fluid  
over the extruding head until the evaporator assembly is completely full.  
10) Replace the spout and strap in their correct positions.  
11) Allow the icemaker to sit for about 10 minutes before operation. If you placed a clamp on  
the reservoir hose in step 9, remove it before operation.  
12) Move the flush switch to the “ICE” position, then turn on the power supply. Replace the  
top panel and front panel in their correct positions. Make ice using the solution until the  
icemaker stops making ice.  
13) Remove the front panel.  
14) Move the flush switch to the “FLUSH” position to drain the remainder of the solution.  
15) After the solution is drained, move the flush switch to the “ICE” position.  
16) Replace the front panel in its correct position.  
17) Open the water supply line shut-off valve and supply water to the reservoir.  
18) When the gear motor starts, remove the front panel and turn off the power supply.  
19) Drain out all water from the water line. See 4) through 6).  
46  
Download from Www.Somanuals.com. All Manuals Search And Download.  
[c] Sanitizing Solution  
Dilute 2.5 fl. oz. (74 ml or 5 tbs) of IMS-II Sanitizer or a 5.25% sodium hypochlorite solution  
(chlorine bleach) with 5 gallons (19 l) of warm water.  
IMPORTANT  
For safety and maximum effectiveness, use the solution immediately after  
dilution.  
[d] Sanitizing Procedure - Initial  
The sanitizing process will sanitize the icemaker.  
1) Close the water supply line shut-off valve.  
2) Remove the strap connecting the spout to the chute assembly.  
3) Remove the thumbscrews securing the spout and lift it off. Remove the rubber O-ring and  
nylon O-ring at the top of the cylinder and also remove the packing between the spout  
and the chute.  
4) Pour the sanitizing solution over the extruding head until the evaporator assembly and  
the reservoir are filled and the solution starts to overflow into the drain pan.  
5) Remove the two thumbscrews securing the proximity switch to the chute assembly.  
6) Remove the chute assembly from the icemaker.  
7) Remove the packing at the bottom of the ice chute.  
8) Remove the three ties and the chute insulation.  
9) Remove the six wing nuts and two baffles.  
10) Remove the two thumbscrews, the plate and the packing from the top of the ice chute,  
then remove the bin control assembly by sliding it slightly toward the chute opening and  
lifting it off.  
11) Disassemble the bin control assembly by removing the two snap pins, shaft and  
actuator.  
12) Soak the removed parts in .25 gallons (1 l) of sanitizing solution for 10 minutes then  
wipe them down.  
13) Rinse the parts thoroughly.  
IMPORTANT  
If the solution is left on these parts, they will rust.  
47  
Download from Www.Somanuals.com. All Manuals Search And Download.  
14) Replace all parts in their correct positions.  
IMPORTANT  
When installing the baffles, make sure that the bent surface (the one without the  
studs) faces the actuator so that the bent surface can guide the ice to the center  
of the actuator.  
15) Move the flush switch to the “ICE” position, then turn on the power supply. Replace the  
top panel and front panel in their correct positions. Make ice using the solution until the  
icemaker stops making ice.  
[e] Sanitizing Procedure - Final  
1) Remove the front panel and top panel, then turn off the power supply.  
2) Move the flush switch to the “FLUSH” position.  
3) Turn on the power supply and drain out all water from the water line.  
4) Turn off the power supply.  
5) Remove the strap connecting the spout to the chute assembly.  
6) Remove the thumbscrews securing the spout and lift it off.  
7) Pour the sanitizing solution over the extruding head until the evaporator assembly and  
the reservoir are filled and the solution starts to overflow into the drain pan.  
8) Replace the spout and strap in their correct positions.  
9) Allow the icemaker to sit for about 10 minutes before operation.  
10) Move the flush switch to the “ICE” position, then turn on the power supply. Replace the  
top panel and front panel in their correct positions. Make ice using the solution until the  
icemaker stops making ice.  
11) Remove the front panel.  
12) Move the flush switch to the “FLUSH” position to drain the remainder of the solution.  
13) After the solution is drained, move the flush switch to the “ICE” position.  
14) Replace the front panel in its correct position.  
15) Open the water supply line shut-off valve and supply water to the reservoir.  
48  
Download from Www.Somanuals.com. All Manuals Search And Download.  
16) When the gear motor starts, remove the front panel and turn off the power supply.  
17) Drain out all water from the water line. See 2) and 3).  
18) Move the flush switch to the “ICE” position and run the icemaker.  
19) Turn off the power supply after 30 minutes.  
20) Pour warm water into the storage bin to melt all ice, and then clean the bin liner with the  
solution.  
21) Flush out any solution from the storage bin.  
22) Turn on the power supply and start the automatic icemaking process.  
IMPORTANT  
1. After cleaning, do not use ice made from the sanitizing solution. Be careful  
not to leave any solution in the storage bin.  
2. Follow carefully any instructions provided with the bottles of cleaning or  
sanitizing solution.  
3. Never run the icemaker when the reservoir is empty.  
49  
Download from Www.Somanuals.com. All Manuals Search And Download.  
3. Maintenance Instructions  
IMPORTANT  
1. This icemaker must be maintained individually, referring to the instruction  
manual and labels provided with the icemaker.  
2. To have the optimum performance of this icemaker, the following  
consumable parts need periodic inspection, maintenance and  
replacement:  
Extruding Head  
Housing  
Gear Motor  
Auger  
Mechanical Seal  
These parts should be inspected at least once a year or every 10,000 hours of  
operation. Their service life, however, depends on water quality and  
environment. More frequent inspection and maintenance are recommended.  
Consult with your local distributor about inspection and maintenance service.  
To obtain the name and phone number of your local distributor, call Hoshizaki  
Technical Support at 1-800-233-1940 in the USA.  
1) Stainless Steel Exterior  
To prevent corrosion, wipe the exterior occasionally with a clean and soft cloth. Use a  
damp cloth containing a neutral cleaner to wipe off oil or dirt build up.  
2) Storage Bin and Scoop  
• Wash your hands before removing ice. Use the plastic scoop provided (bin accessory).  
• The storage bin is for ice use only. Do not store anything else in the bin.  
• Keep the scoop clean. Clean using a neutral cleaner and rinse thoroughly.  
• Clean the bin liner using a neutral cleaner. Rinse thoroughly after cleaning.  
50  
Download from Www.Somanuals.com. All Manuals Search And Download.  
3) Air Filter  
A plastic mesh air filter removes dirt or dust from the air, and keeps the condenser  
from getting clogged. As the filter gets clogged, the icemaker’s performance will be  
reduced. Check the filter at least twice a month. When clogged, use warm water and  
a neutral cleaner to wash the filter.  
4) Condenser  
Check the condenser once a year, and clean if required by using a brush or vacuum  
cleaner. More frequent cleaning may be required depending on the location of the  
icemaker.  
5) Infrared Sensor ( -C model only )  
The infrared sensor inside the ice chute can be accessed by opening the bin door  
and reaching into the chute from below the ice machine. Clean the sensor using a  
neutral cleaner on a clean soft cloth at least twice a month.  
51  
Download from Www.Somanuals.com. All Manuals Search And Download.  

Graco Stroller PD161906A User Manual
Grizzly Saw G0460 User Manual
Haier Air Conditioner HSU 18LE03 User Manual
Hans Grohe Car Video System HL190 User Manual
Harbor Freight Tools Automobile Parts 40312 User Manual
Harbor Freight Tools Outdoor Cart 40129 User Manual
Harman Kardon GPS Receiver GPS 200 User Manual
Hasbro Games Ice Hammer User Manual
HP Hewlett Packard Photo Printer 7830 User Manual
IBM Speaker 92P1956 User Manual