Causes of compressor burnout Common failures of compressors are mainly the following three: 1. Motor burned out; 2. Liquid shock; 3. Oil shortage caused by refrigeration oil. Today I will give you a detailed analysis of the cause of the motor burnout. Compressor faults can be divided into motor faults and mechanical faults (including crankshaft, connecting rod, piston, valve plate, cylinder head gasket, etc.).
Mechanical failures often overload the motor and even block it, which is one of the main causes of motor damage. The damage of the motor is mainly manifested as: the stator winding insulation layer is damaged (short circuit) and open circuit. After the stator winding is damaged, it is difficult to be found in time, which may eventually cause the winding to burn out. After the winding is burned, some phenomena or direct causes that caused the burnout are masked, making post-mortem analysis and cause investigation more difficult. However, there are only six reasons for burning: (1) Abnormal load and locked rotor; (2) Short circuit of winding caused by metal shavings; (3) Contactor problem; (4) The power supply lacks the phase and the voltage is abnormal; (5) Insufficient cooling; (6) Use the compressor to evacuate. But in fact, motor damage caused by multiple factors is more common.
