Appendix F—Troubleshooting
F. Troubleshooting
In most cases, problems with your Corken gas compressor
can be solved quite simply. This chart lists some of the
more frequent problems that occur with reciprocating
compressors along with a list of possible causes. If you
are having a problem which is not listed, or if you cannot
find the source of the problem, consult the factory.
Problem Possible Cause
Low capacity 1, 2, 3, 4
Overheating 1, 2, 3, 5, 6, 11, 15
Knocks, rattles and noise 1, 7, 9, 10, 11, 14
Oil in cylinder 8, 14
Abnormal piston-ring wear 1, 3, 5, 6, 11, 14, 15
Product leaking through crankcase breather 8, 14
Product leakage 4, 8, 14
Oil leakage around compressor base 16, 17
No oil pressure 18, 19
Excessive vibration 1, 7, 9, 10, 11, 12, 13, 25, 27
Motor overheating or starter tripping out 20, 21, 22, 23, 24, 25, 26, 27
Ref.
No.
Possible Causes What To Do
1. Valves broken, stuck or leaking Inspect and clean or repair
2. Piston ring worn Inspect and replace as necessary
3. Inlet strainer clogged Clean or replace screen as necessary
4. Leaks in piping Inspect and repair
5. Inlet or ambient temperature too high Consult factory
6. Compression ratio too high Check application and consult factory
7. Loose flywheel or belt Tighten
8. Worn piston-rod packing Replace
9. Worn wrist pin or wrist-pin bushing Replace
10. Worn connecting-rod bearing Replace
11. Unbalanced load Inspect valve or consult factory
12. Inadequate compressor base Strengthen, replace or grout
13. Improper foundation or mounting Tighten mounting or rebuild foundation
14. Loose valve, piston or packing Tighten or replace as necessary
15. Dirty cooling fins Clean weekly
16. Leaking gas blowing oil from crankcase Tighten packing
17. Bad oil seal Replace
18. No oil in crankcase Add oil
19. Oil-pump malfunction See oil-pressure adjustment
20. Low voltage
Check line voltage with motor nameplate. Consult power
company
21. Motor wired wrong Check wiring diagram
22. Wire size too small for length or run Replace with correct size
23. Wrong power characteristics
Voltage, phase and frequency must coincide with motor
nameplate. Consult with power company.
24. Wrong size of heaters in starter Check and replace according to manufacturer’s instructions
25. Compressor overloading Reduce speed
26. Motor shorted out See driver installation
27. Bad motor bearing Lubricate according to manufacturer’s instructions
98
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