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Blog Details

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Do you know why compressors get damaged, how to prevent such damage from the source, and are you clear about it?

Do you know why compressors get damaged, how to prevent such damage from the source, and are you clear about it?

2020-09-14

Liquid hammer is extremely destructive. It can shatter the scroll plate in a short period, damage the compression chamber, and the fragments may scratch the motor insulation layer, leading to short circuits.

Excessive refrigerant charge: Causes massive liquid return in the system (more likely to occur under small-load cooling in low-temperature environments or heating in low-temperature conditions).

Excessive oil charge: Leads to oil hammer in the system (rarely occurs). For high-pressure chamber compressors, excessive lubricating oil increases resistance to motor rotation, raises input power, impairs motor heat dissipation, and shortens motor life.

High-temperature burnout of the compressor

​Fault symptoms​​:

  • Excessively high discharge or top temperature;
  • Excessively high compressor chamber temperature;
  • High-pressure protection (activated when the system is blocked);
  • Current protection or circuit breaker tripping.

​Fault cause analysis​​:

  • Insufficient refrigerant charge or refrigerant leakage: Results in excessively high discharge or suction temperatures.
  • Refrigeration oil issues: Includes refrigeration oil leakage or poor oil quality.
    High temperatures cause carbonization of compressor oil, exacerbating wear.
  • System dirty blockage or ice blockage (ice blockage mainly refers to the suction pipe): Leads to excessively high discharge or top temperatures.
  • Insufficient system vacuum: The compressor compresses air, resulting in an excessively high compression ratio and temperature.
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Blog Details
Created with Pixso. Home Created with Pixso. Blog Created with Pixso.

Do you know why compressors get damaged, how to prevent such damage from the source, and are you clear about it?

Do you know why compressors get damaged, how to prevent such damage from the source, and are you clear about it?

Liquid hammer is extremely destructive. It can shatter the scroll plate in a short period, damage the compression chamber, and the fragments may scratch the motor insulation layer, leading to short circuits.

Excessive refrigerant charge: Causes massive liquid return in the system (more likely to occur under small-load cooling in low-temperature environments or heating in low-temperature conditions).

Excessive oil charge: Leads to oil hammer in the system (rarely occurs). For high-pressure chamber compressors, excessive lubricating oil increases resistance to motor rotation, raises input power, impairs motor heat dissipation, and shortens motor life.

High-temperature burnout of the compressor

​Fault symptoms​​:

  • Excessively high discharge or top temperature;
  • Excessively high compressor chamber temperature;
  • High-pressure protection (activated when the system is blocked);
  • Current protection or circuit breaker tripping.

​Fault cause analysis​​:

  • Insufficient refrigerant charge or refrigerant leakage: Results in excessively high discharge or suction temperatures.
  • Refrigeration oil issues: Includes refrigeration oil leakage or poor oil quality.
    High temperatures cause carbonization of compressor oil, exacerbating wear.
  • System dirty blockage or ice blockage (ice blockage mainly refers to the suction pipe): Leads to excessively high discharge or top temperatures.
  • Insufficient system vacuum: The compressor compresses air, resulting in an excessively high compression ratio and temperature.