6662XX–X–C
OPERATOR’S MANUAL
RELEASED: 5–31–88
REVISED: 10–2–96
(REV.I)
INCLUDING: OPERATION, INSTALLATION & MAINTENANCE
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.
THIS MANUAL COVERS THE FOLLOWING MODELS
CENTER
BODY MAT'L
WETTEDSIDE
MATERIAL
CENTER
BODY MAT'L
WETTEDSIDE
MATERIAL
MODEL
TH'D
MODEL
TH'D
666200, 20A, -XXX-C NPT ALUMINUM ALUMINUM
666201, 20B, -XXX-C NPT ALUMINUM S'STEEL
666202, 20C, -XXX-C NPT ALUMINUM CAST IRON
666210, 21A, -XXX-C NPT CAST IRON ALUMINUM
666211, 21B, -XXX-C NPT CAST IRON S'STEEL
666212, 21C, -XXX-C NPT CAST IRON CAST IRON
666220, 22A, -XXX-C BSP ALUMINUM ALUMINUM
666221, 22B, -XXX-C BSP ALUMINUM S'STEEL
666222, 22C, -XXX-C BSP ALUMINUM CAST IRON
666230, 23A, -XXX-C BSP CAST IRON ALUMINUM
666231, 23B, -XXX-C BSP CAST IRON S'STEEL
666232, 23C, -XXX-C BSP CAST IRON CAST IRON
SERVICE KITS
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 with
heavy and abrasive material applications. (See page 4)
PUMP DATA
Models . . . See Model Description Chart for ``-XXX'' on page 3.
Pump Type Metallic Air Operated Double Diaphragm
Material . . . See Model Description Chart on page 3.
Weight . . . . ALUMINUM (CTR-BODY) 46 lbs to 82 lbs
CAST IRON (CTR-BODY) 89 lbs
Maximum Air Inlet Pressure . . . . . . . . . 120 p.s.i. (8 bar)
Maximum Outlet Pressure . . . . . . . . . . . 120 p.s.i. (8 bar)
Maximum Flow Rate (Flooded Inlet) . . . . 135 g.p.m.
Maximum Particle Size . . . . . . . . . . . . . 1/4" dia.
Maximum Temp. Limits
2''
Polypropylene 35_F to 150_F (Seats)
PVDF 10_F to 200_F (Seats)
Dimensional Data . . . . . . . . . . . . . . . . . See page 8.
Noise Level* 77.7 db(A) @ 70 psi, 60 cycles per minute.
*ThepumpsoundpressurelevelspublishedherehavebeenupdatedtoanEquivalentContinuousSoundLevel(L )tomeettheintentofANSIS1.13-1971,CAGI-PNEUROPS5.1usingfourmicrophonelocations.
Aeq
GENERAL DESCRIPTION
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 on page 3. ARO pumps feature
stall resistant design, modular air motor / fluid sections.
Air operated double diaphragm pumps utilize a pressure differential in
the air chambers to alternately create suction and positive fluid pressure
in the fluid chambers, ball checks insure the 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 presĆ
sure and will stop cycling once maximum line pressure is reached (disĆ
pensing device closed) and will resume pumping as needed.
INGERSOLL–RAND COMPANY
ONE ARO CENTDER
D
BRYAN, OHIO 43506–0151
T
&
(419) 636–4242
F
AX (419) 633–1674
E1996 D PRINTED IN U.S.A.
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MODEL DESCRIPTION CHART
666 X X X – X X X – C
(REV)
(2’’ THREAD)
BODY MAT’L–[HWR]
FLUID CAPS &
MANIFOLD MAT’L
SEAT MAT’L
BALL MAT’L
DIAPHRAGM
(NPT) - ALUMINUM)
(BSP) - ALUMINUM)
0 ALUMINUM
1 ST' STEEL
2 CAST IRON
2 STAINLESSSTEEL
3 POLYPROPYLENE
4 PVDF (KYNARr)
8 HARDENED 440
STAINLESS STEEL
4 T.F.E (TEFLON)R
6 ACETAL
8 POLYURETHANE 3 VITON R
1 NEOPRENE
2 BUNA N
220 - [STD] 22A - [S ST'L]
221 - [STD] 22B - [S ST'L]
222 - [STD] 22C - [S ST'L]
(BSP) - CASTIRON)
230 - [STD] 23A - [S ST'L]
231 - [STD] 23B - [S ST'L]
232 - [STD] 23C - [S ST'L]
200 - [STD] 20A - [S ST'L]
201 - [STD] 20B - [S ST'L]
202 - [STD] 20C - [S ST'L]
4 T.F.E.(TEFLON)R
5 E.P.R.
9 HYTRELR
B SANTOPRENER
(NPT) - CAST IRON)
210 - [STD] 21A - [S ST'L]
211 - [STD] 21B - [S ST'L]
212 - [STD] 21C - [S ST'L]
FLUID SECTION SERVICE KIT SELECTION
666200 - X X X -C
637124 - X X
Diaphragm Material
Ball Material
EXAMPLE: Model #666200-362-C
Fluid Section Service Kit is 637124-62
AIR AND LUBE REQUIREMENTS
MAINTENANCE
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.
WARNING EXCESSIVE AIR PRESSURE. Can cause pump
damage, personal injury or property damage.
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.
S Keep good records of service activity and include pump in prevenĆ
S Before disassembling empty captured material in the outlet manĆ
ifold by turning the pump upside down to drain material from the
pump.
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 a rate not to exceed one drop per minute.
FLUID SECTION DISASSEMBL
Y
OPERATING INSTRUCTIONS
1. Remove top manifold(s).
2. Remove (22) balls, (19), (33) ``O" Rings, (21) seats.
3. Remove (15) fluid caps.
NOTE:Only Teflon diaphragm models use a primary diaphragm (7)and
a backup diaphragm (8). Refer to the auxiliary view in the Fluid Section
illustration.
4. Remove the (6) nut, (7) or (7/8) diaphragms, and (5) washers.
5. Remove (3), (4) ``O"Rings.
NOTE: Do not scratch or mar the surface of (1) diaphragm rod.
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 a period of time.
S Disconnect the air supply from the pump if it is to be inactive for a
few hours.
S The outlet material volume is governed not only by the air supply
but also by the material supply available at the inlet. The material
supply tubing should not be too small or restrictive. Be sure not to
use hose which might collapse.
FLUID SECTION REASSEMBL
Y
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 Reassemble in reverse order.
new parts as required.
S Clean and inspect all parts. Replace worn or damaged parts with
S Secure the diaphragm pump legs to a suitable surface to insure
S Lubricate diaphragm rod (1) and (2) ``O"ring with Key-LubeR
against damage by vibration.
``O"ring lube or equivalent.
S Use ARO PN/98930-T Bullet (installation tool) to aid in installation
PARTS AND SERVICE KITS
of ``O"ring (2) on diaphragm rod (1).
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.
Refer to the part views and descriptions as provided on page 4
through 7 for parts identification and Service Kit information.
S Certain ARO ``Smart Parts" are indicated which should be availĆ
S For models with Teflon diaphragms: Item (8) Santoprene diaĆ
phragm is installed with the side marked "AIR SIDE" towards the
pump center body. Install the Teflon Diaphragm with the side
marked "FLUID SIDE" towards the fluid cap.
able 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
SECTION is divided further to match typical part MATERIAL OPĆ
TIONS.
S Re-check torque settings after pump has been re-started and run
a while.
S
VitonR, TeflonR, and HytrelR are trademarks of the DuPont Company,
S
KynarR is a trademark of Penwalt Corp,
S
Santoprene R is a registered trademark of Monsanto Company, licensed to Advanced Elastomer Systems,L.P. S Key-Lubeis a trademark of Key Industries.
PAGE 3 OF 8
6662XX-X-C
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PARTS LIST / 6662XX–X–C FLUID SECTION
FLUID SECTION SERVICE KITS
MATERIAL CODE
[A]=Aluminum
[B]=Buna ``N''
[C]=Carbon Steel
[CI]=Cast Iron
[D]=Acetal
l KITS INCLUDE: BALLS (See Ball Option, refer to -XX in chart below) DIAPHRAGMS (See Diaphragm Option,
refer to -XX in chart below) 93706-1 Key-Lube grease, plus O-Ring items: 2, 3, 9, 19.
[E]=E.P.R.
[H]=Hytrel
SEAT OPTIONS
ITEM ``21"
BALL OPTIONS
ITEM ``22"
[K]=P.V.D.F. (Kynar)
[N]=Neoprene
[P]=Polypropylene
[SH]=Hard S'Steel
[SP]=Santoprene
[SS]=Stainless Steel
[T]=Teflon
SEAT (4)
[MTL]
BALL (4)
[MTL]
-XXX
-2XX
-3XX
-4XX
-8XX
-XXX
-X4X
-X6X
-X8X
92776
92924
94514
93266
[SS]
[P]
92757-4
92757-6
92757-8
[T]
[D]
[U]
[U]=Polyurethane
[V]=Viton
[K]
[SH]
DIAPHRAGM OPTIONS
637155 ABRASION RESISTANT
CONVERSION KIT
Includes:
lSERVICE KIT
``7" / ``8"
``3"
O-RING (4)
3/4" O.D.
``19"
O-RING (4)
[MTL] 2-3/4" O.D. [MTL]
6662XX
-XXX
-XX = (Ball)
-XX = (Diaphragm)
93266 (4) [SH] Seat
92757-8 (4) [U] Ball
DIAPHRAGM (2) [MTL]
-XX1
-XX2
-XX3
-XX4
-XX5
-XX9
-XXB
637124-X1
637124-X2
637124-X3
637124-X4
637124-X5
637124-X9
637124-XB
92755-1
92755-2
92755-3
[N] Y325-16
[B] Y325-16
[V] Y328-16
[B] Y325-230
[B] Y325-230
[T] Y327-230
[T] Y220-230
[T] 92761
[B]
[B]
[V]
[T]
[E]
[V]
[E]
93415-4 / 93374-B [T/SP] Y328-16
92755-5
92755-9
92755-B
[E] Y328-16
[H] Y328-16
[SP] Y328-16
[T] Y327-230
[T] 92761
WETTED COMMON PARTS
666XXA,XXB,XXC
ALUMINUM
STAINLESSSTEEL
CAST IRON
666XX0-
666XX1-
666XX2-
S'STEEL HWR
ITEM DESCRIPTION(SIZE IN INCHES)
QTY PART NO.
[MTL] PART NO.
[MTL] PART NO.
[MTL] PART NO.
[MTL]
V1 Rod
(1)
(1)
(2)
(2)
(2)
(2)
(2)
(2)
(8)
(4)
98720-1
Y330-117
92752
[C] 98720-1
[B] Y330-117
[C] 92752
[C] 98720-1
[B] Y330-117
[C] 92752
[C] 98720-1
[B] Y330-117
[C] 92752
[C]
[B]
2
5
``O"Ring (1 O.D.)
Plate (Air side)
[C]
V6 Plate (Fluid side)
92752
[C] 92775
[SS] 92775
[SS] 92775
[SS]
[SS]
[SS]
-
9
Washer (5/8)
93065
[SS] 93065
[C] Y5-107-T
[A] 92773
[SS] 93065
[SS] 93065
14 Screw
Y5-107-K
92750
[SS] Y5-107-T
[SS] 92778
[SS] Y5-107-T
[CI] a SAME
[CI] a SAME
[C] Y6-66-T
[C] Y6-510-T
[C] Y12-5-S
[CS] 92759-1
[C] 93004
15 Fluid Cap
16 Manifold
92855 ( * )
Y6-66-C
Y6-510-C
[A] 92856 ( * )
[C] Y6-66-C
[C] Y6-510-C
[C] Y12-5-C
[CS] 92759
[C] 93004
[SS] 92857 ( * )
[C] Y6-66-C
[C] Y6-510-C
[C] Y12-5-C
[CS] 92759
[C] 93004
-
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
[SS]
[SS]
[SS]
[SS]
[C]
(20) Y12-5-C
(2)
(1)
92759
93004
43 Ground Lug
59 Bolt (5/16-18 x 2)
(16) 93608
[C] 93608
[C] 93608
[C] Y6-59-T
[SS]
* NOTE: 666X2X-, X3X- ARE BSP MODELS, ADD ``-1'' TO THE MANIFOLD PART NO.
Service Note: Part No. 98931-T Installation Tool is available separately for use with items1 and 2.
V ``Smart Parts'' keep these items on hand in addition to the Service Kits for fast repair and reduction of down time.
PAGE 4 OF 8
6662XX-X-C
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PARTS LIST / 6662XX–X–C FLUID SECTION
COLOR CODE
DIAPHRAGM BALL
MATERIAL
COLOR
COLOR
ACETAL
BUNA
EPR
N/A
ORANGE
RED (S)
BLUE (S)
TAN
RED (-)
BLUE (-)
CREAM
16
HYTREL
NEOPRENE GREEN (-) GREEN (S)
. 26
SANTOPRENE TAN
N/A
TFE
URETHANE
VITON
WHITE
N/A
YELLOW (-) YELLOW (S)
WHITE
RED
FOR THE
AIR MOTOR SECTION
SEE PAGES 6 & 7
(-) STRIPE
(S) DOT
29 ,
22
19 k
21
3k
7
59
. 1
15
43
2 k
5
TAB
14 ,
27 ,
9
6
32
22
21
19 k
SANTOPRENE
(Green when used
as backer)
8
7
TEFLON
3k
3k
9
16
14 ,
5
.
T
ORQUE REQUIREMENTS
,
NOTE: DO NOT OVERTIGHTEN FASTENERS
(14) Diaphragm Bolt 65-70 ft.lbs (88-96 Nm.),
apply Loctite 271 to threads.
6
(26, 29) Fluid Caps/Manifold nuts and bolts 120-140 in lbs.,
(13.5-15.8 Nm.) apply Loctite Nickel Antiseize to threads.
TAB
LUBRICATION / SEALANTS
VIEW FOR
k
Apply Keylube to all O-rings,
U-Cups & mating parts
-344,-444 (TEFLONDIAPHRAGM)
CONFIGURATION ONLY
PAGE 5 OF 8
6662XX-X-C
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PARTS LIST / 6662XX–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.
AIR MOTOR PARTS
ITEM DESCRIPTION (Size in Inches)
QTY PART NO.
[MTL]
ITEM DESCRIPTION (Size In Inches)
QTY PART NO.
[MTL]
101 Motor Body (66620X, 22X)
Motor Body (66621X, 23X)
(1) 98725-1
(1) 98719-1
(1) Y325-24
(1) 98718-1
(2) Y145-26
(8) 93860
[A]
[CI]
[B]
V115 Spacer
(4) 92876
[Z]
[Z]
V116 Spacer
(1) 92006
V102 O-Ring (1 O.D.)
n117 Gasket
(1) 92004
[B/NY]
[C]
V103 Sleeve
[BZ]
[C]
118 Pilot Rod
(1) 93309-2
(4) 93075
n104 Retaining Ring, TruArc (13/16 O.D.)
105 Screw/Washer (1/4-20 x 5/8) (6662X0,1,2)
Cap Screw (1/4-20 x 5/8) (6662XA,B,C)
106 Lockwasher (1/4) (6662XA,B,C Only)
107 Plate
n119 O-Ring (3/4 O.D.)
120 Spacer
[U]
[C]
(3) 115959
(2) 98723-2
(2) Y330-110
(4) Y154-41
(1) Y227-5
(1) Y43-5-C
(1) Y17-50-C
(1) Y17-50-S
(1) 93139
[Z]
(8) Y6-42-T
(8) Y14-416-T
(2) 93707-1
(1) 92878
[SS]
[C]
121 Sleeve Bushing
n122 O-Ring (1/2 O.D.)
n123 Screw (8-32 x 3/8)
126 Pipe Plug (1/2)
127 Elbow
[BZ]
[B]
[SS]
[B/NY]
[D]
[C]
n108 Gasket (With Notch)
V109 Piston
[SS]
[C]
(1) 92011
n110 U-Cup (1-3/8 O.D.)
V111 Spool (66620X,22X)
(1) Y186-51
(1) 92005
[B]
128 Pipe Plug (66620X,22X) (1/8)
Pipe Plug (66621X,23X) (1/8)
201 Muffler
[C]
[A]
[SS]
[P]
Spool (66621X,23X)
(1) 93047
[C]
V112 Washer (1.557 O.D.)
n113 O-Ring (Small) (1-1/4 O.D.)
n114 O-Ring (Large) (1-9/16 O.D.)
(5) 92877
[Z]
(5) Y325-214
(6) Y325-126
[B]
n
Keylube, O-Ring Lube Packet
Keylube O-ring Packets (10)
(1)
[B]
637175
MATERIAL CODE
AIR MOTOR SECTION SERVICE
[A] = Aluminum
[B] = Buna ~N"
[BZ]=Bronze
[N] = Neoprene
[NY]=Nylon
Service is divided into two parts - 1.Pilot Valve, 2.Major Valve.
GENERALREASSEMBLY NOTES:
[P] = Polypropylene
[SS]=Stainless Steel
[U] = Polyurethane
[Z] = Zinc
[C] = Carbon Steel
[CI] = Cast Iron
[D] = Acetal
S Air Motor Section Service is continued from Fluid Section repair.
deep scratches on metallic surfaces, and nicks or cuts in ``O"rings.
S Inspect and replace old parts with new parts as necessary. Look for
MAJOR
V
ALVE DISASSEMBL
Y
1. Remove (107) plate (or leg depending on model), (108) and (117)
gaskets.
S Take precautions to prevent cutting ``O"rings upon installation.
S Lubricate ``O"rings with Key-lube or equivalent.
on view.
2. On the side opposite the air inlet, push on the inner diameter (111)
spool. This will force the (109) piston out. Continue pushing the
(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 Do not over-tighten fasteners, refer to torque specification block
S Re-torque fasteners following restart.
PILOT
1. Remove (104) retaining ring.
V
ALVE DISASSEMBL
Y
MAJOR
V
ALVE REASSEMBL
Y
2. Remove (123) screws, (122) ``O"rings.
1. Replace (112) washer, (114) ``O"ring, (113) ``O"ring onto (115)
spacer and insert etc.
NOTE: Be careful to orient spacer legs away from blocking
internal ports.
3. Remove (118) piston rod, (121) sleeve bushing, (119) ``O"rings,
and (120) spacers from the (101) motor body.
4. Remove (103) sleeve and (102) ``O"ring.
PILOT
V
ALVE REASSEMBL
Y
2. Lubricate and carefully insert (111) spool.
3. Install (117) gasket and (107).
4. Lubricate and install (110) packing cup and insert (109) piston into
(air inlet side) cavity, the (110) packing cup lips should point outĆ
ward.
1. Replace (102) ``O''ring 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.
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
6662XX-X-C
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PARTS LIST / 6662XX–X–C AIR SECTION
IMPORTANT
BE CERTAINTO ORIENT (115) SPACER LEGS
AWAY FROM BLOCKING INTERNAL PORTS
WHEN REASSEMBLING AIR SECTION.
MAJOR VALVE
See cross section detail Figure 3.
117
116
107
115
k 114
RADIUS SIDE
(AWAY FROM O-RINGS)
k 113
112
111
101
102 k
103 k
104
110 k
109
108
128Z
126Z
PILOT VALVE
107
118 k
119 k
121
106
.105
122 k
201
120
z 123
127
MAJOR VALVE CROSS SECTIONDETAIL
.
T
ORQUE REQUIREMENTS
,
114k
109 110k
113k
112
115
111
116
NOTE: DO NOT OVERTIGHTEN FASTENERS
(105) 40-50 in. lbs.,(4.5-5.6 Nm. apply Loctite Nickel Anti-
seize to threads.
LUBRICATION / SEALANTS
Apply Keylube to all O-rings, U-Cups & mating parts.
k
z Apply Loctite 271 to threads.
Z Apply pipe sealant to threads.
FIGURE 3
PAGE 7 OF 8
6662XX-X-C
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TROUBLE SHOOTING
Product discharged from exhaust outlet.
S Check for diaphragm rupture.
Low output volume, erratic flow, or no flow.
S Check air supply.
S Check tightness of diaphragm nut.
S Check for plugged outlet hose.
S Check for kinked (restrictive) outlet material hose.
S Check for kinked (restrictive) or collapsed inlet material hose.
Air bubbles in product discharge.
S Check connectionsof suction plumbing.
S Check ``O"ringsbetween intake manifold an fluid caps.
S Check tightness of diaphragm nut.
S Check for pump cavitation - suction pipe should be sized at least
aslarge asthe inlet thread diameter of the pump for proper flow if
high viscosity fluids are being pumped. Suction hose must be a
non-collapsing type, capable of pulling a high vacuum.
S Check all jointson the inlet manifoldsand suction connections.
These must be air tight.
S Inspect the pump for solid objects logged in the diaphragm chamĆ
ber or the seat area.
DIMENSIONAL DATA
(Dimensions shown are for reference only, they are displayed in inches and millimeters (mm).
13-1/8
(333 mm)
11-1/2
(292 mm)
10
(254 mm)
2'' NPT
66620X-,21X-
2'' BSP
66622X-,23X-
15-1/2
(394 mm)
19-3/
(502 mm
AIR INLET
1/2'' NPT
7-5/8
(194 mm)
XHAUST
AD 3/4' NPT
2-9/32
(58 mm)
11-1/8
(283 mm)
9
(229 mm)
17/32 SLOT
(14 mm)
FIGURE 4
T
PN 97999-032
6662XX-X-C
PAGE 8 OF 8
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