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Low-Pressure Transfer Pump
Installation
Additional items that should be incorporated into the
air piping systems are listed in Table 4.
Pump Indications
Pump does not cycle
Pump will not prime
Pump cycles rapidly
Pump will not stall (cycles
more than once or twice per
hour)
External Leaks
Product leakage visible at
weep hole in Pump Body (10)
Product leakage visible at top
of Cylinder (25)
Product leakage visible at
bottom of Cylinder (25)
Air leakage at weep hole in
Pump Body (10)
Internal Leaks
Pump does not prime or
cycles continuously, or
slowly (once or twice/hour)
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Troubleshooting Chart
Possible Problems
1. Air motor not operating properly
2. Pump tube jammed and/or contains
loose components
3. Insufficient air pressure
1. Excessive cycling speed
2. Pump leaking internally
Product source empty
1. Pump requires break-in period
2. Pump leaking internally
3. Pump leaking externally
4. Distribution system leaking
1. Damaged Seal (16)
2. Damaged Rod (19)
1. Cylinder (25) not sufficiently tight
2. Damaged O-Ring (12)
1. Cylinder (25) not sufficiently tight
2. Damaged O-Ring (12)
Damaged Seal (14)
1. Foreign material between Ball (27)
and Valve Body (28)
2. Foreign material between Plate (23)
and Fluid Piston (21)
3. Worn or damaged Ball (27)
4. Worn or damaged Valve Body (28)
5. Worn or damaged Plate (23)
6. Worn or damaged Fluid Piston (21)
7. Worn or damaged Cylinder (25)
Changes Since Last Printing
Replaced Stop 339975 with 340189
9
Part Number
5604-2
Moisture Separator
7604-B
Regulator and Gauge
Table 4 Air Line Components
1. Inspect air motor and rebuild or replace as
necessary
2. Rebuild pump tube
3. Increase air pressure
1. Reduce air pressure
2. See Internal Leaks
Replenish product
1. Operate the pump against moderate fluid
pressure for up to one hour
2. See Internal Leaks
3. See External Leaks
4. Correct leak
1. Replace Seal (16)
2. Inspect Rod (19) and replace as necessary
1. Tighten Cylinder (25) into Pump Body
(10)
2. Replace O-Ring (11)
1. Tighten Cylinder (25) into Valve Body
(28)
2. Replace O-Ring (12)
Replace Seal (14)
Locate and eliminate source of foreign
material.
Disassemble pump tube, clean, inspect, and
replace worn or damaged components
SER 3396101-1
Description
Solution
Revision (8-06)
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