Reciprocating Compressor Troubleshooting Checklist

Symptoms Possible Causes
Noise
Vibration Knocking 7-8-9-10-11-12-14-15-17-18-25
Vibration 3-11-14-18-19-25-32
Pressure Discharge Pressure High 3-25
Discharge Pressure Low 1-3-5-23-24-32
Inter-Cooler Pressure High 2-4-6-27
Inter-Cooler Pressure Low 1-3-5-21-22
Discharge Temperature High 1-3-13-14-17-25-27-30
Temperature
Outlet Cooling Water Temperature High 1-3-13-25-27-30
Overheating Valves 1-3-25-31
Overheating Cylinder 1-3-13-14-17-25-30-32
Overheating Frames 15-25-32
Flow
Low Capacity 1-3-5-21-22-23-32
Inspection Findings
Abnormal Carbon Deposits 1-3-5-16-17-21-25-26-27-30-32-33
Excessive Piston Ring/Cylinder Wear 5-14-17-21-28-29
Valve Wear/Breakage 1-3-14-16-17-20-21-28-29

1. L.P. Valves Wear Breakage
2. H.P. Valves Wear Breakage
3. L.P. Unloading System Defective
4. H.P. Unloading System Defective
5. L.P. Piston Rings Worn
6. H.P. Piston Rings Worn
7. Piston Rod Nut Loose
8. Piston Loose
9. Head Clearance Too Small
10. Bearing Clearance Too High
11. Flywheel or Pulley Loose
12. Crosshead Clearance Too High
13. Cooling Water Quantity Too Low
14. Cylinder Lubrication Inadequate
15. Frame Lubrication Inadequate
16. Cylinder Lubrication Excessive
17. Lubricating Oil Incorrect Spec.
18. Foundation/Grouting Inadequate
19. Piping Support Inadequate
20. Resonant Pulsations (Suction or Discharge)
21. Suction Filter Dirty/Defective
22. Suction Line Restricted
23. System Leakage Excessive
24. System Demand Exceeds Compressor Capacity
25. Discharge Pressure Too High
26. Discharge Temperature Too High
27. Intercooler Fouled
28. Liquid Carry-Over
29. Dirty/Corrosive Products Into Cylinder
30. Cylinder Cooling Jackets Fouled
31. Running Unloaded Too Long
32. Speed Incorrect
33. Suction Pressure Too Low

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