66615X-X-C
OPERATOR’S MANUAL
RELEASED: 5-31-88
INCLUDING: OPERATION, INSTALLATION & MAINTENANCE
12-1-10
REVISED:
(REV. AB)
1-1/2” DIAPHRAGM PUMP
1:1 RATIO (METALLIC)
READ THIS MANUAL CAREFULLY BEFORE INSTALLING,
OPERATING OR SERVICING THIS EQUIPMENT.
It is the responsibility of the employer to place this information in the hands of the operator. Keep for future reference.
SERVICE KITS
Refer to the Model Description Chart to match the pump material op-
tions.
637118-C for air section repair (see page 6).
637124-XX for fluid section repair (see page 4).
637155 Abrasion Resistant Conversion Kit is available for use in heavy
and abrasive material applications (see page 4).
PUMP DATA
Models . . . . . . . . . . . . see “Model Description Chart” for “-XXX”
Pump Type . . . . . . . . . Metallic Air Operated Double Diaphragm
Material . . . . . . . . . . . . see “Model Description Chart”
Weight . . . . Aluminum . . . . . . . . . . . 51.54 lbs (23.4 kgs)
Cast Iron . . . . . . . . . . . . 79.54 lbs (36.1 kgs)
Stainless Steel . . . . . . . . 84.54 lbs (38.3 kgs)
[add 23 lbs (10.4 kgs) for cast iron air motor section]
Maximum Air Inlet Pressure . . . . . . . . 120 p.s.i. (8.3 bar)
66615X-XXX-C
Maximum Material Inlet Pressure . . . . 10 p.s.i. (0.69 bar)
Maximum Outlet Pressure . . . . . . . . . 120 p.s.i. (8.3 bar)
Maximum Flow Rate (flooded inlet) . . . . 90 g.p.m. (340.7 l.p.m.)
Displacement / Cycle @ 100 p.s.i.g. . . 0.64 gal. (2.42 lit.)
Maximum Particle Size . . . . . . . . . . . 1/4” dia. (6.4 mm)
Maximum Temperature Limits (diaphragm / ball / seat material)
Acetal . . . . . . . . . . . . . . . . . 10_ to 180_ F (-12_ to 82_ C)
E.P.R. . . . . . . . . . . . . . . . . . -60_to280_F (-51_to 138_C)
HytrelR . . . . . . . . . . . . . . . -20_ to 150_ F (-29_ to 66_ C)
KynarR PVDF . . . . . . . . . . . 10_ to 200_ F (-12_ to 93_ C)
Neoprene . . . . . . . . . . . . . . 0_ to 200_ F (-18_ to 93_ C)
Nitrile . . . . . . . . . . . . . . . . . 10_ to 180_ F (-12_ to 82_ C)
Figure 1
1-1/2” DIAPHRAGM PUMP
MODEL DESCRIPTION CHART
6661 X X - X X X - C
Center Body Material, Threads
5 - Aluminum, N.P.T.F.
6 - Cast Iron, N.P.T.F.
7 - Aluminum, BSP
8 - Cast Iron, BSP
Fluid Cap / Manifold Material, Hardware
(Steel Hardware)
0 - Aluminum
1 - Stainless Steel
2 - Cast Iron
(Stainless Steel Hardware)
A - Aluminum
B - Stainless Steel
C - Cast Iron
Polypropylene
. . . . . . . . .3.5._ to 175_ F (2_ to 79_
C)
Polyurethane . . . . . . . . . . . . 10_ to 150_ F (-12_ to 66_ C)
PTFE . . . . . . . . . . . . . . . . . 40_ to 225_ F (4_ to 107_ C)
SantopreneR . . . . . . . . . . . -40_to225_F (-40_to 107_C)
VitonR . . . . . . . . . . . . . . . . -40_to350_F (-40_to 177_C)
Dimensional Data . . . . . . . . . . . . . . . see page 8
Seat Material
1 - Aluminum
2 - 316 Stainless Steel
3 - Polypropylene
4 - Kynar PVDF
5 - Carbon Steel
8 - 440 Stainless Steel
Ball Material
1 - Neoprene
2 - Nitrile
Noise Level @ 70 p.s.i. - 60 c.p.m. . . 77.7 dba(A)
6 - Acetal
8 - Polyurethane
A - Stainless Steel
C - Hytrel
Tested with 93139 muffler assembly installed.
3 - Viton
The pump sound pressure levels published here have been updated to an Equivalent
4 - PTFE
Continuous Sound Level (L ) to meet the intent of ANSI S1.13-1971, CAGI-PNEU-
Aeq
5 - E.P.R.
E - Santoprene
ROP S5.1 using four microphone locations.
Diaphragm Material
1 - Neoprene
NOTICE: All possible options are shown in the chart. However, certain
combinations may not be recommended, consult a representative or the
factory if you have questions concerning availability.
5 - E.P.R.
2 - Nitrile
9 - Hytrel
3 - Viton
4 - PTFE / Santoprene
B - Santoprene
FLUID SECTION SERVICE KIT SELECTION
6661XX - X X X - C
637124 - X X
EXAMPLE: MODEL # 666150-361-C
FLUID SECTION SERVICE KIT # 637124-61
Ball
Diaphragm
INGERSOLL RAND COMPANY LTD
209 NORTH MAIN STREET -- BRYAN, OHIO 43506
(800) 276-4658 D FAX (800) 266-7016
E2010
CCN 81660219
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GENERAL DESCRIPTION
MAINTENANCE
The ARO diaphragm pump offers high volume delivery even at low air
pressure and a broad range of material compatibility options available.
Refer to the model and option chart. ARO pumps feature stall resistant
design, modular air motor / fluid sections.
Air operated double diaphragm pumps utilize a pressure differential in
theairchamberstoalternatelycreatesuctionandpositivefluidpressure
in the fluid chambers, valve checks insure a positive flow of fluid.
Pump cycling will begin as air pressure is applied and it will continue to
pump and keep up with the demand. It will build and maintain line pres-
sure and will stop cycling once maximum line pressure is reached (dis-
pensing device closed) and will resume pumping as needed.
Refer to the part viewsanddescriptionsasprovided onpages4through
7 for parts identification and service kit information.
S Certain ARO “Smart Parts” are indicated which should be available
for fast repair and reduction of down time.
S Service kits are divided to service two separate diaphragm pump
functions: 1. AIR SECTION, 2. FLUID SECTION. The FLUID SEC-
TION is divided further to match typical part MATERIAL OPTIONS.
S Provide a clean work surface to protect sensitive internal moving
partsfrom contamination from dirtand foreignmatter duringservice
disassembly and reassembly.
S Keep good records of service activity and include pump in preven-
tive maintenance program.
S Before disassembling, empty captured material in the outlet man-
ifold by turning the pump upside down to drain material from the
pump.
AIR AND LUBE REQUIREMENTS
WARNING EXCESSIVE AIR PRESSURE. Can cause pump
damage, personal injury or property damage.
S Afiltercapableoffilteringoutparticleslargerthan50micronsshould
beusedontheairsupply. Thereisnolubricationrequiredotherthan
the “O” ring lubricant which is applied during assembly or repair.
S Iflubricatedairispresent,makesurethatitiscompatiblewiththe“O”
rings and seals in the air motor section of the pump.
FLUID SECTION DISASSEMBLY
1. Remove top manifold(s).
2. Remove (22) balls, (19) “O” rings and (21) seats.
3. Remove (15) fluid caps.
NOTE: Only PTFE diaphragm models use a primary diaphragm (7) and
a backup diaphragm (8). Refer to the auxiliary view in the Fluid Section
illustration.
OPERATING INSTRUCTIONS
4. Remove the (14) screws, (6) washers, (7) or (7 / 8) diaphragms and
(5) washers.
S Always flush the pump with a solvent compatible with the material
being pumped ifthe materialbeing pumpedissubjectto “settingup”
when not in use for a period of time.
S Disconnecttheairsupplyfromthepumpifitistobeinactiveforafew
hours.
S Theoutletmaterialvolumeisgovernednotonlybytheairsupply,but
alsobythematerialsupplyavailableattheinlet.Thematerialsupply
tubing should not be too small or restrictive. Be sure not to use hose
which might collapse.
S When the diaphragm pump is used in a forced-feed (flooded inlet)
situation, it is recommended that a “Check Valve” be installed at the
air inlet.
S Secure the diaphragm pump legs to a suitable surface to insure
against damage by vibration.
5. Remove (3) “O” rings.
NOTE: Do not scratch or mar the surface of (1) diaphragm rod.
FLUID SECTION REASSEMBLY
S Reassemble in reverse order.
S Clean and inspect all parts. Replace worn or damaged parts with
new parts as required.
S Lubricate (1) diaphragm rod and (2) “O” ring with Key-Lube“O” ring
lube.
S UseAROpn/98931-Tbullet(installationtool)toaidininstallationof
(2) “O” ring on (1) diaphragm rod.
S Be certain (7) or (7 / 8) diaphragm(s) align properly with (15) fluid
caps before making final torque adjustments on bolt and nuts to
avoid twisting the diaphragm.
S FormodelswithPTFEdiaphragms:Item(8)Santoprenediaphragm
is installed with the side marked “AIR SIDE” towards the pump cen-
ter body. Install the PTFE diaphragm with the side marked “FLUID
SIDE” towards the fluid cap.
S Re-check torque settings after pump has been re-started and run a
while.
S VitonR and HytrelR are trademarks of the DuPont Company S KynarR is a trademark of Arkema Inc. S LoctiteR is a registered trademark of Henkel Loctite Corporation S
S SantopreneR is a registered trademark of Monsanto Company, licensed to Advanced Elastomer Systems, L.P. S AROR is a registered trademark of Ingersoll-Rand Company S
66615X-X-C (en)
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PARTS LIST / 66615X-X-C FLUID SECTION
L 637124-XX Fluid Section Service Kits include: BALLS (see Ball Option, refer to -XX inchart below), DIAPHRAGMS (seeDiaphragm Option, refer to -XX
in chart below), 93706-1 Key-Lube grease packet, plus items: 2, 3, 9 and 19.
MATERIAL CODE
SEAT OPTIONS
“21”
BALL OPTIONS
[A] = Aluminum
[B] = Nitrile
L “22” (1-3/4” dia.)
[C] = Carbon Steel
[CI] = Cast Iron
[Co] = Copper
Seat
Qty [Mtl]
(4) [A]
(4) [SS]
Ball
Qty [Mtl]
Ball
Qty [Mtl]
(4) [U]
(4) [SS]
(4) [H]
-XXX
-XXX
-XXX
[D] = Acetal
-1XX 92760
-2XX 92776
-3XX 92924
-4XX 94514
-5XX 95676
-8XX 93266
-X1X 92757-1
-X2X 92757-2
-X3X 92757-3
-X4X 92757-4
-X5X 92757-5
-X6X 92757-6
(4)
(4)
(4)
(4)
(4)
(4)
[N]
[B]
[V]
[T]
[E]
[D]
-X8X 92757-8
-XAX 94804
[E] = E.P.R.
[H] = Hytrel
[K] = Kynar PVDF
[N] = Neoprene
[P] = Polypropylene
[SH] = Hard Stainless Steel
[Sp] = Santoprene
[SS] = Stainless Steel
[T] = PTFE
(4)
(4)
(4)
[P]
[K]
[C]
-XCX 92757-C
-XEX 92757-A
(4) [Sp]
(4) [SH]
[U] = Polyurethane
[V] = Viton
DIAPHRAGM OPTIONS
L Service Kit
-XX = (Ball)
L “7”
L “8”
L “3” (1/16” x 3/4” o.d.)
L “19” (1/8” x 2-3/4” o.d.)
-XXX -XX = (Diaphragm) Diaphragm Qty [Mtl] Diaphragm Qty [Mtl] “O” Ring
Qty [Mtl] “O” Ring Qty [Mtl]
-XX1 637124-X1
-XX2 637124-X2
-XX3 637124-X3
-XX4 637124-X4
-XX5 637124-X5
-XX9 637124-X9
-XXB 637124-XB
92755-1
94615-G
92755-3
94617
(2)
(2)
(2)
(2)
(2)
(2)
[N] - - - - -
[B] - - - - -
[V] - - - - -
[T] 94616
[E] - - - - -
[H] - - - - -
- - -
- - -
- - -
- - - Y325-16
- - - Y325-16
- - - Y328-16
(4)
(4)
(4)
(4)
(4)
(4)
(4)
[B] Y325-230
[B] Y325-230
[T] Y327-230
[T] Y220-230
[T] 92761
(4)
(4)
(4)
(4)
(4)
(4)
(4)
[B]
[B]
[V]
[T]
[E]
[V]
[E]
(2) [Sp] Y328-16
92755-5
94615-9
94615-A
- - -
- - -
- - -
- - - Y328-16
- - - Y328-16
- - - Y328-16
[T] Y327-230
[T] 92761
(2) [Sp] - - - - -
WETTED PARTS OPTIONS
Aluminum
Stainless Steel
Cast Iron
6661X0-X, 6661XA-X
6661X1-X, 6661XB-X
6661X2-X, 6661XC-X
N.P.T.F.
BSP
Part No.
92750
N.P.T.F.
BSP
Part No.
92773
N.P.T.F.
BSP
Part No.
92778
Item Description (size)
15 Fluid Cap
Qty Part No.
(2) 92750
(2) 92749
[Mtl] Part No.
[A] 92773
[A] 92774
[Mtl] Part No.
[SS] 92778
[SS] 92777
[Mtl]
[CI]
[CI]
16 Manifold
92749-1
92774-1
92777-1
HARDWARE OPTIONS
Carbon Steel
6661X0-, 1-, 2-
Qty Part No. [Mtl] Part No.
Stainless Steel
6661XA-, B-, C-
Item Description (size)
[Mtl]
[SS]
[SS]
[SS]
[SS]
[SS]
[SS]
637155
5
Plate (air side)
(2) 92752
(8) Y6-66-C
(4) Y6-510-C
(20) Y12-5-C
(2) 92759
[C] 92775
ABRASION RESISTANT
CONVERSION KIT
Includes:
26 Bolt (3/8” - 16 x 1-1/4”)
27 Bolt (5/16” - 18 x 2-1/4”)
29 Nut (5/16” - 18)
32 Leg
[C] Y6-66-T
[C] Y6-510-T
[C] Y12-5-S
[C] 92759-1
[C] Y6-59-T
93266 (4) [SH] Seat
92757-8 (4) [U] Ball
59 Bolt (5/16” - 18 x 2”)
(16) 93608
COMMON PARTS
Item Description (size)
V 1 Rod
Qty Part No.
[Mtl]
Item Description (size)
L 9 Washer (0.630” i.d.)
14 Screw (5/8” - 18 x 1-1/2”)
43 Ground Lug (see page 7)
Qty Part No.
(2) 93065
[Mtl]
[SS]
[SS]
[Co]
(1) 98720-1
(1) Y330-117
(2) 92775
[C]
L 2 “O” Ring (3/32” x 1” o.d.)
V 6 Plate (fluid side)
(models 6661X0 only)
[B]
(2) Y5-107-T
(1) 93004
[SS]
[C]
(2) 92752
Service Note: Part no. 98931-T installation tool is available separately for use with items 1 and 2.
“Smart Parts”, keep these items on hand in addition to the service kits for fast repair and reduction of down time.
V
Page 4 of 8
66615X-X-C (en)
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PARTS LIST / 66615X-X-C FLUID SECTION
COLOR CODE
. TORQUE REQUIREMENTS ,
NOTE: DO NOT OVERTIGHTEN FASTENERS.
(14) Diaphragm screw, 65 - 70 ft lbs (88.1 - 94.9 Nm.).
(26) Bolts, 240 - 280 in. lbs (27.1 - 31.6 Nm).
Diaphragm
Color
Ball
Color
Material
Acetal
N / A
Blue (--)
Cream
Green (--)
Black
Orange
Blue (S)
Cream
Green (S)
Red (S)
Tan
White
Red
Yellow (S)
(S) Dot
E.P.R.
Hytrel
(29) Nuts, 120 - 140 in. lbs (13.6 - 15.8 Nm).
Neoprene
Nitrile
LUBRICATION / SEALANTS
Santoprene
PTFE
Tan
White
N / A
*
k
Apply Key-Lube to all “O” rings, “U” Cups & mating parts.
Polyurethane
Viton
z Apply LoctiteR 271 to threads.
Yellow (--)
(--) Stripe
U Apply anti-seize compound to threads and bolt and nut
flangeheadswhichcontactpumpcasewhenusingstain-
less steel fasteners.
See item 8 in inset below.
26 , U
16
*
FOR THE
AIR MOTOR SECTION
SEE PAGES 6 & 7
29 , U
1
2 k
22
3 k
19 k
21
15
Tab
5
59 U
7
6
k 3
14 , z
9
27 U
22
32
21
16
19 k
26 , U
Figure 2
Santoprene 8
(Green when used as backer)
7 PTFE
(white)
1
3
Fluid
Side
8
6
5
Air
Side
Air
Side
10
9
Fluid
Side
7
4
2
Tab
Torque Sequence
View for 6661XX-XX4-C (PTFE diaphragm) configuration only.
Cross Section View of Diaphragms
66615X-X-C (en)
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PARTS LIST / 66615X-X-C AIR SECTION
n Indicates parts included in 637118-C Air Section Service Kit.
SERVICE KIT NOTE: Service Kit 637118-C is a general repair kit for all 1” and larger ARO diaphragm pump air motors. It contains extra “O” rings and
extra parts that may not be needed to service this model.
Item Description (size)
101 Motor Body (66615X-X, 66617X-X)
(66616X-X, 66618X-X)
Qty Part No.
(1) 94744
(1) 94742
(2) Y325-24
(1) 94528
(2) Y145-26
(8) 93860
[Mtl]
[A]
Item Description (size)
V 116 Spacer
Qty Part No.
(1) 92006
[Mtl]
[Z]
[CI]
[B]
n 117 Gasket
(1) 92004
[B/Ny]
[C]
n 102 “O” Ring (1/16” x 1-1/4” o.d.)
V 103 Sleeve
118 Pilot Rod
(1) 93309-2
(4) 93075
[D]
n 119 “O” Ring (1/8” x 3/4” o.d.)
120 Spacer
[U]
n 104 Retaining Ring, TruArc (1-5/32” i.d.)
[C]
(3) 115959
(2) 98723-2
(2) 94820
[Z]
105 Screw / Lockwasher (1/4” - 20 x 5/8”)
(models 6661X0-X, 6661X1-X, 6661X2-X)
[C]
121 Sleeve Bushing
[Bz]
[U]
n 122 “O” Ring (3/32” x 9/16” o.d.)
n 123 Screw (#8 - 32 x 3/8”)
126 Pipe Plug (1/2 - 14 P.T.F. x 17/32”)
127 90_ Street Elbow (3/4 - 14 N.P.T.)
128 Pipe Plug (1/8 - 27 P.T.F. x 1/4”)
197 Button Head Screw (1/4” - 20 x 1/4”)
198 Button Head Screw (1/4” - 20 x 3/8”)
201 Muffler
Cap Screw (1/4” - 20 x 5/8”) (models
6661XA-X, 6661XB-X, 6661X5C-X)
(8) Y6-42-T
[SS]
(4) Y154-41
(1) Y227-5-L
(1) Y43-5-C
(1) Y227-2-L
(2) 94987
[C]
[C]
[C]
106 Lockwasher (1/4”) (models 6661XA-X,
6661XB-X, 6661XC-X only)
(8) Y14-416-T [SS]
[C]
[SS]
[SS]
107 Plate
(2) 93707-1
(1) 92878
(1) 92011
[SS]
[B/Ny]
[D]
(1) 94987-1
(1) 350-568
n 108 Gasket (with notch)
V 109 Piston
231 Pipe Plug (1/4 - 18 N.P.T. x 0.41”) (models (2) Y17-51-S
66616X-X and 66618X-X only)
[SS]
n 110 “U” Cup (3/16” x 1-3/8” o.d.)
V 111 Spool (models 66615X-X, 66617X-X)
(models 66616X-X, 66618X-X)
(1) Y186-51
(1) 92005
(1) 93047
(5) 92877
(5) Y325-214
(6) Y325-126
(4) 92876
[B]
[A]
n
n
Key-Lube “O” Ring Lubricant
10 Pak of Key-Lube
(1) 93706-1
(10) 637175
[C]
V 112 Washer (1.557” o.d.)
n 113 “O” Ring (small) (1/8” x 1-1/4” o.d.)
n 114 “O” Ring (large) (3/32” x 1-9/16” o.d.)
V 115 Spacer
[Z]
Service Kits include: Y212-101 (2) Screws (#10 - 32 x 1/4”) used on units mf’d be-
tween 8/90 and 4/92 to retain the pilot bushing.
[B]
[B]
[Z]
MATERIAL CODE
[CI] = Cast Iron
[D] = Acetal
[Ny] = Nylon
AIR MOTOR SECTION SERVICE
[A] = Aluminum
[SS] = Stainless Steel
[U] = Polyurethane
[Z] = Zinc
[B] = Nitrile
Service is divided into two parts - 1. Pilot Valve, 2. Major Valve.
GENERAL REASSEMBLY NOTES:
[Bz] = Bronze
[C] = Carbon Steel
S Air Motor Section Service is continued from Fluid Section repair.
S Inspect and replace old parts with new parts as necessary. Look for
deep scratches on metallic surfaces, and nicks or cuts in “O” rings.
S Take precautions to prevent cutting “O” rings upon installation.
S Lubricate “O” rings with Key-Lube.
MAJOR VALVE DISASSEMBLY
1. Remove (107) plate (or leg depending on model), (108 and 117)
gaskets.
S Do not over-tighten fasteners, refer to torque specification block on
view.
2. Onthesideoppositetheairinlet, pushontheinnerdiameterof(111)
spool.Thiswillforcethe(109)pistonout.Continuepushingthe(111)
spool and remove. Check for scratches and gouges.
3. Reach into the air section (exhaust side) and remove (116) spacer,
(115) spacers, (113) “O” rings, (114) “O” rings, (112) washers, etc.
Check for damaged “O” rings.
S Re-torque fasteners following restart.
PILOT VALVE DISASSEMBLY
1. Remove (104) retaining ring.
2. Remove (123) screws and (122) “O” rings.
3. Remove (118) piston rod, (121) sleeve bushing, (119) “O” rings and
(120) spacers from the (101) motor body.
MAJOR VALVE REASSEMBLY
1. Replace (112) washer, (114) “O” ring and (113) “O” ring onto (115)
spacer and insert etc.
4. Remove (103) sleeve and (102) “O” rings.
NOTE: Be careful to orient spacer legs away from blocking in-
ternal ports.
PILOT VALVE REASSEMBLY
2. Lubricate and carefully insert (111) spool.
3. Install (117) gasket and (107).
1. Replace two (102) “O” rings if worn or damaged and reinstall (103)
sleeve.
2. Install one of the (121) sleeve bushings, (119) “O” rings, (120)
spacers and the remaining (121) bushing.
3. Carefully push (118) pilot rod into bushings etc. and retain on each
end with the two (122) “O” rings, retain with (123) screws.
4. Replace (104) retaining rings.
4. Lubricate and install (110) packing cup and insert (109) piston into
(airinletside)cavity,the(110)packingcuplipsshouldpointoutward.
5. Install (108) gasket and replace (107).
V “Smart Parts”, keep these items on hand in addition to the service kits for fast repair and reduction of down time.
Page 6 of 8
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PARTS LIST / 66615X-X-C AIR SECTION
117
111
116
105 ,
106
115
k 114
k 113
112
107
MAJOR VALVE
See cross section detail, figure 4.
IMPORTANT
BE CERTAIN TO ORIENT (115) SPACER LEGS
AWAY FROM BLOCKING INTERNAL PORTS
WHEN REASSEMBLING AIR SECTION.
101
z 197
Figure 3
104
H 123
121
197 z
43
102 k
103 k
104
z 198
106
. 105
126 g
107
PILOT VALVE
119 k
121
108
109
123 H
118 k
g 128
k 110
g 231
120
122 k
MAJOR VALVE CROSS SECTION DETAIL
201
127
114 k
109 110 k
113 k
112
115
111
116
. TORQUE REQUIREMENTS ,
NOTE: DO NOT OVERTIGHTEN FASTENERS.
(105) 40 - 50 in. lbs (4.5 - 5.6 Nm).
Figure 4
LUBRICATION / SEALANTS
k
H
Apply Key-Lube to all “O” rings, “U” Cups & mating parts.
Apply Loctite 262 to threads.
z Apply Loctite 271 to threads.
g Apply Loctite 572 to threads.
66615X-X-C (en)
Page 7 of 8
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TROUBLE SHOOTING
Product discharged from exhaust outlet.
S Check for diaphragm rupture.
S Check tightness of (14) diaphragm screw.
Low output volume, erratic flow or no flow.
S Check air supply.
S Check for plugged outlet hose.
S Check for kinked (restrictive) outlet material hose.
S Check for kinked (restrictive) or collapsed inlet material hose.
S Check for pump cavitation - suction pipe should be sized at least as
large as the inlet thread diameter of the pump for proper flow if high
viscosity fluids are being pumped. Suction hose must be a non-col-
lapsing type, capable of pulling a high vacuum.
S Check all joints on the inlet manifolds and suction connections.
These must be air tight.
Air bubbles in product discharge.
S Check connections of suction plumbing.
S Check “O” rings between intake manifold and fluid caps.
S Check tightness of (14) diaphragm screw.
S Inspectthepumpforsolidobjectslodgedinthediaphragmchamber
or the seat area.
DIMENSIONAL DATA
(Dimensions shown are for reference only, they are displayed in inches and millimeters (mm).
Material Outlet
1-1/2 - 11-1/2 N.P.T.F. - 1 (66615X-X-C, 66616X-X-C)
Rp 1-1/2 (1-1/2 - 11 BSP parallel) (66617X-X-C, 66618X-X-C)
14-13/16” (376 mm)
13-1/8” (333 mm)
11-1/2” (292 mm)
18-3/8”
Air Inlet
1/2 - 14 N.P.T.F. - 1
(467 mm)
19-5/8”
7-5/8”
(498 mm)
(194 mm)
Air Exhaust Thread
3/4 - 14 N.P.T.F. - 1
2-3/4”
(70 mm)
10-3/4” (273 mm)
12 ” (305 mm)
1/2” Slot (14 mm)
9” (229 mm)
Material Inlet
1-1/2 - 11-1/2 N.P.T.F. - 1 (66615X-X-C, 66616X-X-C)
Rp 1-1/2 (1-1/2 - 11 BSP parallel) (66617X-X-C, 66618X-X-C)
Figure 5
PN 97999-96
Page 8 of 8
66615X-X-C (en)
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