Troubleshooting of low-temperature frost-free air-cooled fin evaporator

Reason: the surface temperature of the evaporator is too low, causing the water vapor in the air to freeze on the surface of the evaporator, affecting the heat exchange effect.

Troubleshooting method:
Check the operating parameters of the evaporator to ensure that they are set correctly.
Check whether the refrigerant is adequately charged. If not, add enough refrigerant.
If the evaporator is seriously frozen, the method of artificial deicing can be taken, but pay attention to safety.

Cause: The evaporator connection pipe or interface is loose or damaged, or the sealing gasket is aging or damaged, resulting in refrigerant loss.

Troubleshooting method:
Check whether the connection pipes and interfaces of the evaporator are tight. If they are loose or damaged, tighten or replace them in time.
Check whether the gasket of the evaporator is aged or damaged. If so, replace it with a new gasket.

The reason: the internal pipeline or filter of the evaporator is blocked, which affects the flow of refrigerant and the heat exchange effect.

Troubleshooting method:
Check whether the filter of the evaporator is blocked, if it is blocked, it should be cleaned or replaced.
Check whether the internal pipeline of the evaporator is blocked, if it is blocked, professional dredging and cleaning should be carried out.

Cause: Unstable installation of the evaporator, damage or aging of the support frame, or vibration caused by the equipment itself.

Troubleshooting method:
Check whether the installation of the evaporator is stable and firm, if there is instability, it should be re-installed.
Check whether the support frame of the evaporator is damaged or aging, if so, it should be replaced in time.
If the vibration is caused by the problem of the equipment itself, it should be stopped immediately, and professional maintenance and replacement should be carried out.

Cause: insufficient refrigerant charge, abnormal system pressure, or blocked or damaged filter.

Troubleshooting method:
Check whether the refrigerant is adequately charged. If it is insufficient, add enough refrigerant.
Check whether the system pressure is normal, if the pressure is too high or too low should be adjusted in time.
Check whether the filter of the system is blocked or damaged, if so, it should be cleaned or replaced in time.