How to quickly handle refrigerant leaks or icing in a Refrigeration System?

Key Points for Quickly Handling Refrigeration System Faults

1. Refrigerant Leak

Immediately stop the system and disconnect the power to prevent the compressor from continuing to run and causing further leakage.

Use soapy water or an electronic leak detector to check suspected areas. Once the leak is confirmed, seal it or replace the damaged piping.

After sealing, evacuate to -0.1 MPa and maintain this vacuum for 18–24 hours to ensure the system is properly sealed.

Recharge with refrigerant of the correct specifications. Production can only resume after the pressure and temperature parameters have returned to normal.

2. Icing (Evaporator or Piping Frost)

First, check if the system is low on refrigerant or operating under excessive load, causing an abnormal drop in evaporation temperature.

Close the valves, activate defrost mode or manually defrost using heating. Resume normal operation after the ice has completely melted.

Check the expansion valve opening, condensing pressure, and refrigerant flow rate. Readjust or replace the expansion valve if necessary to prevent re-icing.

After defrosting, perform a system vacuum leak test to ensure there are no leaks before adding refrigerant and starting the system.

3. System Abnormal Alarm Handling

Based on the fault codes displayed on the control panel, quickly locate the faulty component (e.g., abnormal compressor current, valve not closed, etc.).

Check the voltage, current, and insulation resistance of the electrical components. Operation can only continue after confirming electrical safety.

If high-pressure components are involved, protective equipment must be worn and work must be carried out in a well-ventilated environment to prevent accidental leaks and safety hazards.