Cold Storage Refrigeration Compressor Common Problems & Troubleshooting Knowledge Sharing
Cold storage refrigeration compressors usually have 6 main fault categories, and overheating accounts for 42% of all reported failures. xiteliduo Refrigeration Compressors summarizes the common fault data for cold room operators.
High discharge temperature fault often relates to insufficient refrigerant filling. When refrigerant charge is lower than 85% of rated value, discharge temperature will rise beyond safe threshold quickly.
Piston refrigeration compressor abnormal vibration mostly comes from loose foundation bolts. Vibration amplitude will exceed 0.12mm when bolt fastening torque drops below 35N·m.
Semi-hermetic refrigeration compressor oil pressure alarm appears in 28% of long-running units. The trigger condition usually happens when lubricant viscosity drops after 1800 hours operation.
Cold storage refrigeration compressor capacity shortage can be caused by dirty condenser. Heat transfer efficiency will decrease by more than 20% if the fin surface fouling thickness exceeds 0.8mm.
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FAQ
Q1: What is the largest proportion of cold storage refrigeration compressor faults? A: Overheating fault accounts for about 42% of all reported compressor failures. Q2: What will happen if refrigerant filling is less than 85% rated volume? A: The compressor discharge temperature will exceed the safe operating threshold rapidly. Q3: What vibration threshold indicates loose bolts of piston refrigeration compressor? A: Vibration amplitude over 0.12mm usually means insufficient bolt fastening torque. Q4: When will semi-hermetic compressor trigger oil pressure alarm easily? A: It often occurs after around 1800 running hours with degraded lubricant viscosity. Q5: How much efficiency loss will condenser fouling bring to cold storage compressor? A: Heat transfer efficiency drops over 20% when fouling thickness exceeds 0.8 mm. Q6: What is the standard torque for piston compressor foundation bolts? A: The fastening torque should keep above 35N·m to avoid abnormal vibration. Q7: Which component inspection should be done first when compressor cooling capacity is insufficient? A: Check condenser fin fouling status as the first priority in troubleshooting.
