SER 7889-6
High-Pressure Material Pump
Revision (3-03)
14
Alemite Corporation
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 cycles continuously, or
slowly (once or twice/hour)
1. Pump leaking internally
2. Pump leaking externally
3. Distribution system leaking
1. See
Internal Leaks
2. See
External Leaks
3. Correct leak
External Leaks
Product leakage visible at bottom
of Packing Screw (
11
)
1. Damaged Seal (
14
)
2. Damaged Upper Piston Rod (
19
).
1. Replace Seal (
14
)
2. Replace Upper Piston Rod (
19
)
Product leakage visible at bottom
of Body (
16
)
1. Pump tube not sufficiently tight
2. Damaged Gasket (
23
)
1. Tighten pump tube assembly
2. Replace Gasket (
23
)
Product leakage visible at weep
hole in Pump Tube (
24
) and/or
Adapter (
39
)
1. Pump tube not sufficiently tight
2. Damaged Gasket(s) (
25
)
1. Tighten pump tube assembly
2. Replace Gaskets (
25
)
Internal Leaks
Pump does not prime or cycles
continuously, or slowly
(once or twice/hour)
1. Foreign material between Ball (
34
) and
Adapter and Insert assembly (
36
)
2. Foreign material between Valve
Body (
44
) and Valve Seat (
45
)
3. Worn or damaged Ball (
34
)
4. Worn or damaged Adapter and Insert
assembly (
36
)
5. Worn or damaged Valve Body (
44
)
6. Worn or damaged Valve Seat (
45
)
7. Worn or damaged Seal (
28
)
8. Worn or damaged Piston (
31
)
9. Worn or damaged Seal (
43
)
10. Worn or damaged Primer Rod (
38
)
Locate and eliminate source of foreign
material.
Disassemble pump tube, clean, inspect
and replace worn or damaged
components.
Changes Since Last Printing
Changed Pump Displacement per Cycle Value in
Table 1
