ARO ARO 650718-C Operator'S Manual Download Page 8

Page 8 of 8 

650718-C (en)

PN 97999-1064

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 manifolds and fl uid caps.
Check tightness of (14) diaphragm screw.

y

y

y

y

y

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

Check air supply.
Check for plugged outlet hose.
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 vacuum.
Check all joints on the intake manifolds and suction con-
nections. These must be air tight.
Inspect the pump for solid objects lodged in the dia-
phragm chamber or the seat area.

y

y

y

y

y

y

y

DIMENSIONAL DATA

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

Figure 5

A

G

C

D

E

B

F

H

J

K

L

(air exhaust)

(material inlet)

(material outlet)

(air inlet)

(pressure relief valve)

DIMENSIONS

A -  13-1/8” (333.4 mm)
B -  18-3/8” (466.7 mm)
C -  9” (228.6 mm)
D -  2-3/4” (69.9 mm)
E -  14-13/16” (376.2 mm)

F -  11-1/2” (292.1 mm)
G -  19-5/8” (498.5 mm)
H -  1

0

-3/4” (2

73

 mm)

J -  12” (3

05

mm)

K -  17/32” (13.5 mm)

L -  7-5/8” (193.7 mm)
M -  1-1/2 - 11-1/2 N.P.T.F. - 1
N -  1/2 - 14 N.P.T.F. - 1
P -  3/4 - 14 N.P.T.F. - 1
Q -  1/4 - 18 N.P.T.

Summary of Contents for ARO 650718-C

Page 1: ... Outlet Pressure 50 p s i g 3 4 bar Maximum Flow Rate flooded inlet 75 g p m 283 9 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 MaximumTemperature Limits diaphragm ball seal seat material Acetal 10 to 180 F 12 to 82 C Kynar PVDF 10 to 200 F 12 to 93 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 77 7 db A c c...

Page 2: ...y y y y y OPERATING AND SAFETY PRECAUTIONS READ UNDERSTAND AND FOLLOWTHIS INFORMATIONTO AVOID INJURY AND PROPERTY DAMAGE let hose or piping from pump WARNING HAZARDOUS MATERIALS Can cause serious injury 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...

Page 3: ... records of service activity and include the pump in preventive maintenance program Before disassembling empty captured material in the outlet manifold by turning the pump upside down to drain material from the pump y y y y y y y y y y y GENERAL DESCRIPTION The ARO U L listed pump for pumping petroleum products offers high volume delivery even at low air pressures and easy self priming This model ...

Page 4: ...128 A Manifold bottom 1 92749 A Item Description size Qty Part No Mtl n 19 O Ring 1 8 x 2 3 4 o d 4 Y327 230 V 21 Seat 4 92942 K n 22 Ball 1 3 4 diameter 4 92757 6 D 26 Bolt 3 8 16 x 1 1 4 8 Y6 66 C C 27 Bolt 5 16 18 x 2 1 4 4 Y6 510 C C 29 Nut 5 16 18 20 Y12 5 C C 32 Leg 2 92759 C 43 Ground Lug see page 7 1 93004 Co 59 Bolt 5 16 18 x 2 16 93608 C 81 ReliefValve 1 96333 Br FLUID SECTION DISASSEMBL...

Page 5: ...grease 93706 1 to all O rings U cups and mating parts d Apply Loctite 271 to threads g Apply gasolene resistant pipe sealant to pipe threads h NOTICE Radius edge of parts 5 and 6 is against diaphragm PARTS LIST 650718 C FLUID SECTION FORTHE AIR MO TOR SECTION SEE PAGES 6 7 Torque Sequence 1 4 6 8 3 5 7 2 Figure 2 Cross section view of diaphragm Fluid side Air side 10 9 15 59 27 22 19 21 26 3 2 1 2...

Page 6: ...acers 113 O rings 114 O rings 112 washers etc Check for damaged O rings MAJOR VALVE REASSEMBLY NOTE Replace worn parts as necessary Lubricate O rings with Key Lube or equivalent when reassembling Replace 112 washer 114 O ring and 113 O ring onto 115 spacer and insert etc NOTE Be careful to ori ent spacer legs away from blocking internal ports Lubricate and carefully insert 111 spool Install 117 ga...

Page 7: ...NTS NOTE DO NOT OVERTIGHTEN FASTENERS 105 Screws 40 50 in lbs 4 5 5 6 Nm LUBRICATION SEALANTS c Apply Key Lube grease to all O rings U cups and mating parts d Apply Loctite 271 to threads e Apply Loctite 262 to threads f Apply Loctite 572 to threads Figure 4 MAJORVALVE CROSS SECTION DETAIL MAJORVALVE See cross section detail figure 4 Figure 3 PILOTVALVE IMPORTANT BE CERTAINTO ORIENT 115 SPACER LEG...

Page 8: ...meter 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 Check all joints on the intake manifolds and suction con nections These must be air tight Inspect the pump for solid objects lodged in the dia phragm chamber or the seat area y y y y y y y DIMENSIONAL DATA Dimensions shown are for reference only th...

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