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Page 8 of 8 

666250-XXX-C (en)

PN 97999-1155

A

E

G

M

L

F

N

B

H

J

D

K

C

P

S - 

Exhaust port

Q - 

Material inlet

Q - 

Material outlet

R - 

Air inlet

TROUBLE SHOOTING

Product discharged from exhaust outlet.

Check for diaphragm rupture.
Check tightness of (14) diaphragm screw.

Air bubbles in product discharge.

Check connections of suction plumbing.
Check “O” rings between intake manifold and fl uid caps.
Check tightness of (14) diaphragm screw.

Low output volume, erratic fl ow or no fl ow.

Check air supply.
Check for plugged outlet hose.

y

y

y

y

y

y

y

Check for kinked (restrictive) outlet material hose.
Check for kinked (restrictive) or collapsed inlet material hose.
Check for pump cavitation - suction pipe should be sized at 
least as large as the inlet thread diameter of the pump for 
proper fl ow if high viscosity fl uids are being pumped. Suction 
hose must be a non-collapsing type, capable of pulling a high 
volume.
Check all joints on the inlet manifolds and suction connections. 
These must be air tight.
Inspect the pump for solid objects lodged in the diaphragm 
chamber or the seat area.

y

y

y

y

y

DIMENSIONAL DATA

Dimensions shown are for reference only, they are displayed in inches and millimeters (mm).

Figure 5

DIMENSIONS

A - see below
B - 24-3/4” 

(628.7 mm)

C - 10-1/16” 

(255.6 mm)

D - 1-7/8” 

(47.6 mm)

E - 22-3/4” 

(577.7 mm)

F - 13” 

(330.2 mm)

G - see below
H - 9-1/16” 

(230.2 mm)

J - 10-1/16” 

(255.6 mm)

K - 9/16” 

(14.3 mm)

L - see below
M -  see below
N - 8-15/32” 

(214.6 mm)

Model “Q”

666250-XXX-C 

2 - 11-1/2 NPTF - 2

666270-XXX-C 

Rp 2 (2 - 11 BSP, parallel)

P - 5-1/4” 

(133.4 mm)

Q - see below
R  -  3/4 - 14 NPTF - 2
S  -  1-1/4 - 11-1/2 NPTF - 2

Model “A” 

“G” 

“L” 

“M”

6662X0-XXX-C 17-15/16” 

(455.1 mm)

 26-3/8” 

(669 mm)

 2” 

(50.8 mm)

 8-31/32” 

(227.6 mm)

6662X1-XXX-C 18” 

(456.7 mm)

 26-9/32” 

(667.5 mm)

 1-7/8” 

(47.6 mm)

 9” 

(228.4 mm)

6662X2-XXX-C 17-15/16” 

(455.1 mm)

 26-3/8” 

(669 mm)

 2” 

(50.8 mm)

 8-31/32” 

(227.6 mm)

6662XA-XXX-C 17-15/16” 

(455.1 mm)

 26-3/8” 

(669 mm)

 2” 

(50.8 mm)

 8-31/32” 

(227.6 mm)

6662XB-XXX-C 18” 

(456.7 mm)

 26-9/32” 

(667.5 mm)

 1-7/8” 

(47.6 mm)

 9” 

(228.4 mm)

6662XC-XXX-C 17-15/16” 

(455.1 mm)

 26-3/8” 

(669 mm)

 2” 

(50.8 mm)

 8-31/32” 

(227.6 mm)

Содержание ARO 666250-XXX-C

Страница 1: ...mits diaphragm ball seal seat material E P R EPDM 60 to 280 F 51 to 138 C Hytrel 20 to 150 F 29 to 66 C Kynar PVDF 10 to 200 F 12 to 93 C Nitrile 10 to 180 F 12 to 82 C Santoprene 40 to 225 F 40 to 107 C PTFE 40 to 225 F 4 to 107 C Viton 40 to 350 F 40 to 177 C Dimensional Data see page 8 Noise Level 70 p s i 60 c p m c 85 3 db A d c Tested with 94810 muffler assembly installed d The pump sound pr...

Страница 2: ...AND SAFETY PRECAUTIONS READ UNDERSTAND AND FOLLOWTHIS INFORMATIONTO AVOID INJURY AND PROPERTY DAMAGE jury or property damage Do not attempt to return a pump to the factory or service center that contains hazardous material Safe handling practices must comply with local and national laws and safety code requirements Obtain Material Safety Data Sheets on all materials from the supplier for proper ha...

Страница 3: ...the diaphragms For models with PTFE diaphragms Item 8 Santoprene dia phragm is installed with the side marked AIR SIDE towards the pump center body Install the PTFE diaphragm with the side marked FLUID SIDE towards the fluid cap Re check torque settings after the pump has been re started and run a while y y y y y 1 2 3 y y y y y y y GENERAL DESCRIPTION The ARO diaphragm pump offers high volume del...

Страница 4: ... A 2 Sp Y328 237 4 T XX9 637432 X9 96391 C 2 H Y327 237 4 V XXB 637432 XB 96391 A 2 Sp 94356 4 E COMMON PARTS Item Description size Qty Part No Mtl o 1 Rod 1 96394 C n 2 O Ring 3 32 x 1 o d 1 Y330 117 B 9 Washer 0 630 i d 2 93065 SS Item Description size Qty Part No Mtl 14 Screw 5 8 18 x 2 1 2 2 Y5 111 T SS 43 Ground Lug see page 7 1 93004 Co NOTE Seat options 9XX EXX and GXX do not require item 1...

Страница 5: ...and nut flange heads which contact pump case when using stain less steel fasteners f Not used with models 6662XX 9XX C 6662XX EXX C and 6662XX GXX C PARTS LIST 6662XX XXX C FLUID SECTION FORTHE AIR MO TOR SECTION SEE PAGES 6 7 Figure 2 COLOR CODE Diaphragm Ball Material Color Color Hytrel Cream Cream Nitrile Black Red Santoprene Tan Tan Santoprene Green N A backup PTFE White White Stripe Dot See i...

Страница 6: ...sert etc NOTE Be careful to orient spacer legs away from blocking internal ports Lubricate and carefully insert 111 spool Install 117 gasket and 107 plate Lubricate and install 110 packing cup and insert 109 piston into air inlet side cavity The 110 packing cup lips should point outward Install 108 gasket and replace 107 1 2 3 4 1 2 3 1 2 3 4 5 PARTS LIST 6662XX XXX C AIR MOTOR SECTION AIR MOTOR P...

Страница 7: ...TEN FASTENERS 105 screw 40 50 in lbs 4 5 5 6 Nm 123 screw 20 25 in lbs 2 3 2 8 Nm LUBRICATION SEALANTS c Apply Key Lube grease to all O rings U cups and mating parts d Apply Loctite 271 to threads f Apply Loctite 262 to threads g Apply Loctite 572 to threads MAJOR VALVE See cross section detail figure 4 LEGS IMPORTANT BE CERTAINTO ORIENT 115 SPACER LEGS AWAY FROM BLOCK ING INTERNAL PORTSWHEN REASS...

Страница 8: ...ck all joints on the inlet manifolds and suction connections These must be air tight Inspect the pump for solid objects lodged in the diaphragm chamber or the seat area y y y y y DIMENSIONAL DATA Dimensions shown are for reference only they are displayed in inches and millimeters mm Figure 5 DIMENSIONS A see below B 24 3 4 628 7 mm C 10 1 16 255 6 mm D 1 7 8 47 6 mm E 22 3 4 577 7 mm F 13 330 2 mm...

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