Low-Pressure Transfer Pump
SER 3396101-1
9
Revision (8-06)
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
Product source empty
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 Pump Body (
10
)
1. Damaged Seal (
16
)
2. Damaged Rod (
19
)
1. Replace Seal (
16
)
2. Inspect Rod (
19
) and replace as necessary
Product leakage visible at top
of Cylinder (
25
)
1. Cylinder (
25
) not sufficiently tight
2. Damaged O-Ring (
12
)
1. Tighten Cylinder (
25
) into Pump Body
(
10
)
2. Replace O-Ring (
11
)
Product leakage visible at
bottom of Cylinder (
25
)
1. Cylinder (
25
) not sufficiently tight
2. Damaged O-Ring (
12
)
1. Tighten Cylinder (
25
) into Valve Body
(
28
)
2. Replace O-Ring (
12
)
Air leakage at weep hole in
Pump Body (
10
)
Damaged Seal (
14
)
Replace Seal (
14
)
Internal Leaks
Pump does not prime or
cycles continuously, or
slowly (once or twice/hour)
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
)
Locate and eliminate source of foreign
material.
Disassemble pump tube, clean, inspect, and
replace worn or damaged components
Changes Since Last Printing
Replaced Stop 339975 with 340189
Installation
Additional items that should be incorporated into the
air piping systems are listed in
Table 4
.
Part Number
Description
5604-2
Moisture Separator
7604-B
Regulator and Gauge
Table 4
Air Line Components
1-800-548-1191 - http://www.partdeal.com - [email protected]
