66602X–X
OPERATOR’S MANUAL
RELEASED: 6–10–93
REVISED: 6–21–10
(REV.H) IPP/PSE
INCLUDING: OPERATION, INSTALLATION & MAINTENANCE
1/4” DIAPHRAGM PUMP
1:1 RATIO (NON–METALLIC)
READ THIS MANUAL CAREFULLY BEFORE INSTALLING,
OPERATING OR SERVICING THIS EQUIPMENT
.
THIS MANUAL COVERS THE FOLLOWING MODELS
CHECKTYPE
FLAT
MODEL
TH'D
NPT
NPT
WETTED MATERIAL
POLYPROPYLENE
666023,J,H,L*-XXX
666026,M,N,P*-XXX
FLAT
GROUNDABLE ACETAL
* J,H,L,M,N,P Represent Inlet and Outlet Options, refer to page 3 for more information.
SERVICE KITS
Refer to Service Kit Chart on page 3 to match pump material with SerĆ
vice Kits offered. The ``X'' represents a variable digit of the Model No.
637273-XXX for Pump Rebuild. (Model digits 7,8,9)
637274-XX for Check Valve Replacement. (Model digits 7,9)
637275-XX for Diaphragm and Air Section repair. (Model digits 8,9)
637276 for Pre-assembled Replacement Air Valve Section. (Fig.2)
PUMP DATA
MODELS - See Model Description Chart for ``-XXX'' on page 3.
PUMP TYPE -Non-Metallic Air Operated Double Diaphragm
MATERIAL - See Model Description Chart on page 3.
WEIGHT LBS. - Polypropylene 3.6 (1.63 kgs)
- Groundable Acetal 4.1 (1.86 kgs)
MAXIMUM AIR INLET PRESSURE - 100 p.s.i.g. (6.9 bar)
MINIMUM AIR INLET PRESSURE - 20 p.s.i.g. (1.4 bar)
MAXIMUM OUTLET PRESSURE - 100 p.s.i.g. (6.9 bar)
MAXIMUM FLOW RATE - 5 g.p.m. (18.9 Liters)
MAXIMUM SUCTION LIFT - 20 Ft. (Water)
MAXIMUM OUTPUT PER CYCLE -.014 Gallons (53 cc's)
MAXIMUM PARTICLE SIZE - 1/32" dia.
666023-XXX
1/4'' DIAPHRAGM PUMP
MAXIMUM TEMP. LIMITS -
Polypropylene 35_F to 120_F
Groundable Acetal 10_F to 150_F
GROUNDABLE - 666026-XXX Models Only
DIMENSIONAL DATA - See page 8.
NOISE LEVEL*- 59.8 db(A) @ 70 psi, 60 cycles per minute.
* The pump sound pressure levels published here have been updated to an Equivalent Continuous Sound Level (L ) to meet the intent of ANSI S1.13-1971, CAGI-PNEUROP S5.1 using four microphone locations.
Aeq
GENERAL DESCRIPTION
The ARO Diaphragm Pump offers high volume delivery even at low air
pressures, easy self priming, the ability to pump various viscosity maĆ
terials and the ability to pass solids (as stated in the chart above). The
pump is designed to correspond to the needs of the user by offering a
variety of wetted parts configurations to handle almost any application.
Refer to the model and option chart on page 3.
Model 666026-XXX: The Acetal material used in this pump contains
Stainless Steel fibers, it's conductivity allows it to be connected to a
suitable ground, a ground screw is provided for this.
NOTICE: All possible options are shown in the chart on page 3 however
certain combinations may not be recommended, consult a representative
or the factory if you have questions concerning availability.
INGERSOLL RAND COMPANY LTD
209 NORTH MAIN STREET – BRYAN, OHIO 43506
© 2010
(800) 495-0276 FAX(800) 892-6276
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MODEL DESCRIPTION CHART
BASIC MODEL NO.
FLUID SECTION MATERIAL OPTIONS
6660 X X – X X X
BODY MATERIAL,
INLET/OUTLET OPTION
CHECK VALVE SEAT
CHECK
MATERIAL
DIAPHRAGM/O–RING
MATERIAL
MATERIAL
PTFE/T.F.E
PTFE/FLOURAZ
E SANTOPRENER/FLUORAZ
PTFE
23 POLYPROPYLENE,(1)INLET/(1)OUTLET
26 GROUNDABLE ACETAL, (1)INLET/(1)OUTLET
2J POLYPROPYLENE,(1)INLET/(2)OUTLET
2H GROUNDABLE ACETAL, (1)INLET/(2)OUTLET
2L POLYPROPYLENE,(2)INLET/(1)OUTLET
2M GROUNDABLE ACETAL, (2)INLET/(1)OUTLET
2N POLYPROPYLENE,(2)INLET/(2)OUTLET
2P GROUNDABLE ACETAL, (2)INLET/(2)OUTLET
3 POLYPROPYLENE
6 ACETAL
4
4
D
R
S The outlet material volume is governed not only by the air supply
but also by the material supply available at the inlet. The materialĆ
supply tubing should not be too small or restrictive. Be sure not to
use hose which might collapse.
AIR AND LUBE REQUIREMENTS
WARNING EXCESSIVE AIR PRESSURE. Can cause pump
damage, personal injury or property damage.
MAINTENANCE
S A filter capable of filtering out particles larger than 50 microns
should be used on the air supply. In most applications there is no
lubrication required other than the "O"ring lubricant which is apĆ
plied during assembly or repair.
Refer to the part list pg. 4 for Service Kit Information, parts view on
pg. 5. and Repair Proceedures on pgs 6 and 7.
S Certain ARO ``Smart Parts" are indicated which should be availĆ
S The pump can be rotated 360_to suit the application. It may be
mounted upside down or on the wall with no effect on suction lift or
operating efficiency. The filter and regulator need to be oriented in
a normal vertical direction to function properly.
able for fast repair and reduction of down time.
S Provide a clean work surface to protect sensitive internal moving
parts from contamination from dirt and foreign matter during serĆ
vice disassembly and reassembly.
S Pipe plugs included for the material inlets, they can be switched to
accommodate piping requirements however the fluid inlet must alĆ
ways be in the port closest to the mounting base.
S Keep good records of service activity and include pump in prevenĆ
tive maintenance program.
S When lubricated air is necessary, supply the air lubricator with a
good grade of SAE 90 wt. non-detergent oil and set the lubricator
to arate not to exceed one drop per minute.
SERVICE KITS
DIAPHRAGM &
66602X- CHECK VALVE AIR SECTION
REBUILD KIT
637273-344
637273-34D
637273-34E
637273-644
637273-64D
637273-64E
INSTALLATION
-344
-34D
-34E
-644
-64D
-64E
637274-34
637274-3D
637274-3E
637274-64
637274-6D
637274-6E
637275-44
637275-4D
637275-4E
637275-44
637275-4D
637275-4E
S
NOTICE: Re-torque fasteners prior to use. Refer to page step
#22 on page 7 for information.
PTFE
S Apply
tape or pipe sealant to threads upon assembly to preĆ
vent leakage.
S Secure the diaphragm pump legs to a suitable surface to insure
S To avoid problems install a particle fluid filter to screen out foreign
against damage by vibration.
matter 1/32'' or larger in diameter.
S The pump is not recommended for submerged applications.
S When the diaphragm pump is used in a forced-feed (flooded inlet)
situation it is recommended that a ``CheckValve'' be installed at the
air inlet.
OPERATING INSTRUCTIONS
S Always flush the pump with a solvent compatible with the material
being pumped if the material being pumped is subject to ``setting
up" when not in use for aperiod of time.
S Disconnect the air supply from the pump if it is to be inactive for a
few hours.
S
VitonR and HytrelR are registered trademarks of the DuPont Company
S
KynarR is a registered trademark of Penwalt Corp S FluorazR is a registered trademark of Greene, Tweed & Co. Inc.
S
Santoprene R is a registered trademark of Monsanto Company, licensed to Advanced Elastomer Systems, L.P. S Key-LubeR is a registered trademark of Key Industries
PAGE 3 OF 8
66602X-X
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PARTS LIST
SERVICE KITS
CHECK VALVE KIT
Refer to the Kit Selection Chart page 3 for proper ``-XXX" for your model.
KIT NUMBER
THESE ITEMS ARE INCLUDED IN THE KITS
Keylube packet
93706-1 is
included
19 33
71
637274-XX
637275-XX
637273-XXX
637276
7
7
19 33 64
102
119 132
137 138
137 138
144
144
146 147
146 147
110
DIAPHRAGM & AIR VALVE KIT
COMPLETE REBUILD KIT
AIR VALVEREPLACEMENTASM.
with all kits.
19 33 64 71 102 110
102
119
132
132
111 118
135 137
142
145 146 147
DIAPHRAGM OPTIONS
``64" ``19"
``7"
DIAPHRAGM
(2)
``33"
``O"ring (4)
3/4" O.D.
66602X
-XXX
``O"ring (2)
[MTL] 79mm X 4 mm [MTL]
``O"ring (8)
1-1/8" O.D.
[MTL]
[MTL]
-XX4
-XXD
-XXE
H93898
H93898
H93808
[T]
[T]
H93947
H93947
---
[B]
[B]
--
H93831
H93933
H93933
[T]
[F]
[F]
H93830
H93932
H93932
[T]
[F]
[F]
[SP]
COMMON PARTS
POLYPROPYLENE
GROUNDABLE
MATERIAL CODE
[A]=Aluminum
[B]=Buna``N''
[D]=Acetal (Orange*)
[F]=Fluoraz
[G]=Groundable Acetal (Dk Gray)
[K]=Kraton
[N]=Neoprene
[P]=Polypropylene (Lt Gray)
[R]=Ryton
[S]=Steel
[SP]=Santoprene
[SS]=Stainless Steel
[T]=PTFE
[U]=Polyurethane
*Refers to wetted parts only
666023,J,L,N
666026,H,M,P
ITEM DESCRIPTION(SIZE IN INCHES)
j1 Rod (2-13/16 Long)
QTY PART NO.
[MTL] PART NO.
[MTL]
(1)
(2)
(2)
(4)
93916
[S] 93916
[SS] 93915
[P] 93810-2
[P] 93817-2
[P] 93813-2
[P] 93941-2
[S]
j5 Washer (1-3/4 O.D.)
j6 Diaphragm Nut (1/4-20)
j16 Manifold
93915
[SS]
[D]
93810-1
93817-1
[G]
[D]
j36 Manifold Tube
(`) 93813-1
(`) 93941-1
37 Manifold Plug
[D]
43 Ground Screw (10-32 x 1/4) Not Shown
62 Nut (1/4-20)
(1)
(6)
(2)
(1)
(1)
(1)
(1)
(4)
(1)
(1)
(6)
-----
--
93005
[S]
93828
[SS] 93828
[P] 93832-2
[P] 93812-2
[P] 93811-2
[P] 93804
[SS]
[D]
PART NOTES
63 Pipe Plug (1/4-18) Not Shown
j65 Fluid Cap, W/AIR INLET
j66 Fluid Cap
93832-1
93812-1
93811-1
93804
`
Manifold Qty's will be either
1 or 2 depending on the inlet/outlet
option selected. (Refer to to chart
on page 3.)
[G]
[G]
[P]
H
These parts are available in
j68 Air Cap, Right (w / Groove d )
j69 Air Cap, Left (w / Tongue Z )
71 Check Asm.: Seat, Disc, Stop
72 Cover, Right
Service Kits only, see the Service
Kit Chart at the top of the page and
on page 3.
93805
[P] 93805
[P]
H66973-1
93816-2
93816-1
93827
[P] H66973-2
[P] 93816-2
[P] 93816-1
[SS] 93827
[D]
V ``Smart Parts'' keep these items
on hand in addition to the Service
Kits for fast repair and reduction of
down time.
[P]
73 Cover, Left
[P]
131 Bolt (1/4-20 x 6.250)
[SS]
AIR SECTION PARTS
QTY
QTY
PART NO.
ITEM DESCRIPTION(Size in Inches)
PART NO.
[MTL]
ITEM DESCRIPTION(Size In Inches)
[MTL]
102 ``O''Ring (7/8 O.D.)
103 Bushing
(3) HY325-018
(1) 93917
[B]
[D]
[B]
[D]
[D]
[B]
[K]
[R]
137 ``O''Ring (1 O.D.)
138 ``O''Ring (13/16 O.D.)
142 Screw (#4-20)
(1) HY325-020
(1) HY325-114
(3) 93942
[B]
[B]
[SS]
[B]
[R]
[B]
[B]
110 ``U''Cup (13/16 O.D.)
(1) HY186-54
(1) 65438
j111 Spool Asm.-(Incl'ds #110,#119,#138)
144 ``U''Cup (5/8 O.D.)
j145 Minor Valve Block
146 ``O''Ring (5/16 O.D.)
147 ``O''Ring (7/16 O.D.)
(2) HY186-45
(1) 93807
j118 Trip Rod Asm.- Inculdes (4) #119 (1) 65439
119 ``O''Ring (5/8 O.D.)
132 Gasket
(1) H15066
(1) H93809
(1) 93806
(2) HY325-008
(2) HY325-011
j135 Valve Block
PAGE 4 OF 8
66602X-X
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PARTS LIST
144
69
144
103
1
5 ,
64
66
7
6 ,
71
16
62 ,
73
Z
33
72
19
``B''
33
65
147
68
d
``A''
131 ,
FIGURE 1
Logo
Plate
INLET /
OUTLET
OPTIONS
These parts are included in Air Valve Replacement Kit 637276.
MANIFOLD TUBE
``A''
36
``B''
36
102
135
SI / SO
SI / DO
DI / SO
DI / DO
137
36
37
37
36
111
37
37
132
. TORQUE REQUIREMENTS ,
(6) / (5) Diaphragm nut / washer 75-85 in.lbs.
use Loctite #242, tighten together.
146
NOTE: DO NOT OVERTIGHTEN FASTENERS
119
146
138
110
119
(62) / (131) Manifold bolts / nuts 35-45 in.lbs.,
tighten together alternately & evenly, then re-torque.
102
(142) Torque to 4-6 in.lbs.
145
142,
102
LUBRICATION
Apply Keylube (93706-1) to all
``O"rings, ``U''Cups & mating parts
118
AIR VALVE
(SHOWN 2X SCALE)
FIGURE 2
PAGE 5 OF 8
66602X-X
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PUMP DISASSEMBLY AND REASSEMBL
Y
GENERAL PUMP REPAIR NOTES:
the diaphragm from the nut.
NOTE: Be careful not to round the diaphragm nut during this step.
14. Pull apart the two air caps. The connecting rod bushing will fall free.
If the air valve block asm. did not fall free, pull it from the air cap at
this time.
15. Use the ``O"ring pick to remove the air cap seal.
16. Use the pick to remove the U-cups and any ``O"rings that may reĆ
main in the air caps.
17. Remove the retaining screws and separate the valve block and miĆ
nor valve block. Pull the piston from the minor valve block. Then
remove all ``O"rings using the pick. Gently push the spool from the
valve block. A dowel may be needed to push out the spool.
NOTE: Be careful not to damage either part during this step.
18. Use the pick to remove all ``O"rings from the spool and the center
gasket from the valve block.
S Tools needed to complete disassembly and repair.:
S 7/16" Wrench, 9/16" Wrench,7/16" Socket, 9/16" Socket,
Spanner Wrench, Torque Wrench (measuring inch pounds),
``O"ring Pick.
S Once the pump is disassembled, you have the opportunity to clean
and inspect all parts for wear. Look for deep scratches on metallic
surfaces, and nicks or cuts in ``O"rings. Replace old parts with new
ones as necessary.
S Take precautions to prevent cutting ``O"rings upon installation.
packet of this lubricant is included in each Service Kit.
S Lubricate ``O"rings and ``U''cups with Key-lube or equivalent. A
S Do not over-tighten fasteners, refer to torque specification block
on view.
S Re-torque fasteners following restart.
PUMP REBUILD PROCEDURES: (rebuild by service kits)
Service Kits available. From your local distributor.
(Kits also include Keylube grease packet.)
For the 637273-XXX and 637275-XX Service Kits
AIR VALVE SECTION (Steps 1-6)
S SERVICE KIT: 637273-XXX contains parts for a complete pump
1. Install new ``O"rings and U-cup on the spool and piston.
2. Lubricate the spool, piston and internal bores of the valve blocks.
3. Insert the piston into the minor valve block, being careful not to
damage any ``O"rings during this process. Now slide the spool into
the valve block, inserting the small end first.
rebuild.
S SERVICE KIT: 637274-XX contains new check assemblies.
and diaphragms.
S SERVICE KIT: 637275-XX includes parts to rebuild the air motor
NOTE: There may be some resistance when installing the piston
and spool, however you should not have to force the parts into
place.
S AIR VALVE REPLACEMENT KIT: 637276 includes acomplete
factorypre-assembledreplacementairvalvesection.
4. Install the shaped gasket into the minor valve block and push the
major valve block into the minor valve block, retain with screws and
torque to 6 in.lbs.
PUMP DISASSEMBLY:
1. Place the pump on a flat workbench. Remove both cover plates
and set them aside.
NOTE: Do not lubricate the gasket or valve block surfaces.
5. Insert new, lubricated ``U''cups in each of the air caps. The lips of
the ``U''cups should face towards the diaphragm chambers. Install
the air cap seal.
6. Pre-assemble each of the two diaphragms by first inserting the diĆ
aphragm nut through the new diaphragms, Appy Loctite #242 to
the threads, attach the backup washer, secure with the a 9/16"
wrench and spanner wrench. Using a torque wrench, tighten the
diaphragm nut and washer to 80-inch pounds.
2. Using a7/16-inch wrench, loosen the bolts that run through the
pump and remove the six nuts. Pull the bolts through the pump
body and set them aside.
3. The fluid caps and manifolds may fall free at this time. If not, grasp
the fluid caps and separate them from the pump body.
4. The air inlet fluid cap has two small ``O"rings at the air inlet and exĆ
haust ports. Remove these with the ``O"ring pick.
5. The manifold tubes may have pulled free of the pump when the
fluid caps were removed, if not remove both tubes from the pump
body.
NOTE: Be careful not to round off the diaphragm nut. Backup
``O"rings are included in the Service Kit for models with PTFE diaĆ
phragms.
6. Remove the ``O"rings from the ends of each manifold tube.
7. If the manifolds did not fall free, separate them from the fluid caps
at this time.
For the 637274-X and 637273-XXX Service Kits:
8. To remove the checks, it may be necessary to push a dowel
through the fluid caps.
9. Use the pick to remove any ``O"rings that remain in the manifold or
fluid cap.
10. With the 9/16" socket and 9/16" wrench, loosen and remove either
diaphragm nut. Gently pull the diaphragm away from the pump
body.
7. Install new, lubricated ``O"rings onto the four complete check asĆ
semblies that are included with the Service Kit. Also put new
``O"rings on each end of the two manifold tubes.
PUMP REASSEMBLY:
8. First hand tighten the connecting rod to one of the diaphragm asĆ
semblies.
9. Place the air cap on end. Insert the air valve assembly and bushing
in place. (be sure the U-cups are installed). Align logo plates and
push the air caps together.
NOTE: Be sure the bushing, and air valve assembly remain in
place.
10. Lubricate the connecting rod and insert it into the air cap.
PTFE
NOTE: Models with
diaphragms will have back up ``O"rings.
11. Push the connecting rod through the pump body. Wrap the conĆ
necting rod in a shop rag and secure in a soft-jawed vise.
12. Remove the remaining diaphragm nut with a 9/16-inch wrench.
NOTE: Be careful not to mar the connecting rod surface during this
step.
PTFE
NOTE: Models with
are placed in the groove of each air cap.
diaphragms have backup ``O''rings that
13. Using the 9/16" wrench and the spanner wrench, remove the backĆ
up washer from the diaphragm nut. This will allow you to separate
PAGE 6 OF 8
66602X-X
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REASSEMBLY (CONT’D)
17. Press two of the check assemblies into the lower inlet ports of the
fluid caps. The checks are keyed and can be assembled only one
way.
NOTE: If the old checks are to be used, clean all parts in an apĆ
propriate solvent.
18. Place manifolds over each check, pushing firmly to secure the
check and the manifold tube.
11. Attach the second diaphragm assembly to the connecting rod,
hand tighten the (pre-assembled) diaphragm nut and washer until
it bottoms out on the connecting rod.
NOTE: Models with Teflon diaphragms have backup ``O"rings that
are placed in the groove of each air cap. Do not over-tighten the
nut.
19. Press the remaining checks into the upper, outlet ports of the fluid
caps. Make sure the smaller seat opening is inserted first.
20. Place manifolds over each check, pushing firmly to secure the
check and the manifold tube.
21. Insert two bolts through each manifold. Secure by attaching a nut
to each bolt. Applying a small amount of anti-seize compound or
lubricant to the threads will help prevent the nut from binding.
22. Tightening sequence for the long bolts:
12. Replace the ``O"rings at the air inlet and exhaust ports of the air inĆ
let fluid cap.
13. Properly align the fluid cap and attach it to the pump body. When in
place, the air inlet should be at the upper right, with the exhaust at
the lower left.
14. Insert a bolt into the bore just below the air inlet and one just above
the exhaust port. Applying a small amount of anti-seize compound
or lubricant to the threads will help prevent the nut from binding.
Properly align the second fluid cap and push it into position.
15. Secure the fluid caps by installing nuts onto each bolts, but do not
tighten fully at this time.
IMPORTANT ASSEMBLY NOTE: The fastener nuts have ribs
which lock into the material, for best results place a socket wrench
on the nuts so they are held stationary and tighten only the bolts
they are used with.
16. Insert the manifold tubes through the pump body, being careful that
the ``O"rings do not fall off during this step.
.
Torque all six bolts to 40-inch pounds.
Cross tighten the bolts in an alternating star shaped
pattern.
.
.
Repeat torque sequence twice.
23. Finish reassembly by pressing both cover plates into place.
TROUBLE SHOOTING
Air Motor stalls
Air leaks from pump (other than exhaust)
S Check for blown Diaphragm
S Check for bolts not evenly or adequately torqued.
air cap on the air inlet side.
S Check for damaged ``O"rings on the Spool.
S Check for damaged ``O"rings on the Trip Rod.
S Check valve block gasket for leakage.
S Check for ``O"ring missing/damage between the fluid cap and the
External fluid leaks from pump.
S Check for bolts not properly torqued.
Air leaks from Exhaust
S Check for damaged ``O"rings on the Manifold Tube.
S Check for damaged ``O"rings on the Valve Check.
S Check for damaged diaphragm seal.
S Check for damaged ``O"rings on the Valve Block and Minor Valve
Block, Spool or Trip Rod.
S Check gasket between valve blocks for leakage.
backwards.
S U-cups on Connecting Rod Bushing are damaged or installed
Fluid leaks from Exhaust
Pump operates but dispenses little or no fluid
S Check for obstruction in fluid line.
S Check for foreign matter clogging check assemblies.
Note: Install a fluid screen on the material inlet hose if the problem
continues.
S Check for diaphragm damage.
S Check for diaphragm screws not adequately torqued.
S Suction line too small.
tape or pipe sealant upon assembly.
Low flow, or pump continues to cycle after shut-off.
PTFE
S Check for air leakage at the air/fluid inlet pipe plugs. Use
S Check for trapped air if the pump is oriented where the inlet check
is above the outlet check. Temporarily increase the flow or re-
prime the pump.
S Check for damaged seats or foreign matter clogging the check asĆ
sembly.
PAGE 7 OF 8
66602X-X
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DIMENSIONAL DATA
Dimensions shown are for reference only, they are shown in inches and millimeters (mm).
1-13/16
(46 mm)
END VIEWS
11/16
4-1/2
(114 mm)
1-3/8
(35 mm)
4-3/4
(121 mm)
5/16 SLOT
(8 mm)
5-1/2
(140 mm)
SIDE VIEW
5-5/8
(142 mm)
6-1/2
(165 mm)
7-3/8
(188 mm)
PN 97999-571
66602X-X
PAGE 8 OF 8
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