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Low-Pressure Transfer Pump
SER 9616-A
Alemite Corporation
9
Revision (10-98)
Troubleshooting Chart
Pump Indications
Possible Problems
Solution
Pump does not cycle
1. Air motor not operating properly
2. Pump tube jammed and/or contains
loose components
3. Insufficient air pressure
1. Inspect air motor and rebuild or replace as
necessary
2. Rebuild pump tube
3. Increase air pressure
Pump will not prime
1. Excessive cycling speed
2. Pump leaking internally
1. Reduce air pressure
2. See Internal Leaks
Pump cycles rapidly
1. Product source empty
1. Replenish product
Pump will not stall (cycles
more than once or twice per
hour)
1. Pump requires break-in period
2. Pump leaking internally
3. Pump leaking externally
4. Distribution system leaking
1. Operate the pump against moderate fluid
pressure for up to one hour
2. See Internal Leaks
3. See External Leaks
4. Correct leak
External Leaks
Product leakage visible at
weep hole in Outlet Body
(11)
1. Damaged Seal (15)
2. Damaged Rod (18)
1. Replace Seal (15)
2. Inspect Rod (18) and replace as necessary
Product leakage visible at
bottom of Outlet Body (11)
1. Screws (28) not sufficiently tight
2. Damaged O-Ring (10)
1. Tighten Screws (28) into Air Motor
Assembly (4)
2. Separate Cylinder (26) from Outlet Body
(11) and replace O-Ring (10)
Air leakage at weep hole in
Outlet Body (11)
Damaged Seal (13)
Replace Seal (13)
Product leakage visible
between Cylinder (26) and
Valve Body (34)
1. Stop (23) not sufficiently tight into
Valve Body (34)
2. Damaged O-Ring (24)
1. Tighten Stop (23) into Valve Body (34)
2. Separate Valve Body (34) from Stop (23)
and replace O-Ring (24)
Internal Leaks
Pump does not prime or
cycles continuously, or
slowly (once or twice/hour)
1. Foreign material between Ball (29)
and Seat (31)
2. Foreign material between Plate (22)
and Fluid Piston (20)
3. Worn or damaged Ball (29)
4. Worn or damaged Seat (31)
5. Worn or damaged O-Ring (7)
6. Worn or damaged Cylinder (26)
7. Worn or damaged Plate (22)
8. Worn or damaged Fluid Piston (20)
Locate and eliminate source of foreign
material.
Disassemble pump tube, clean, inspect, and
replace worn or damaged components
Changes Since Last Printing
Changed Contents of Repair Kit 393627
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