Refrigeration equipment maintenance common sense When the compressor is worn and there is dirt in the refrigeration system, the dirt is easily blocked in the capillary or filter, which is called dirty blockage. After the dirty blockage occurs, the refrigerant cannot flow, and the phenomenon is similar to the ice blockage. If the method of heating and melting ice is ineffective, and the sound of liquid flow is not heard, it means that it is dirty.
Dirty blockage is very similar to the failure of refrigerant leakage (evaporator defrosting). The difference between the two is to unplug the power plug and cut off the top of the compressor's air filling pipe with pliers. Observe carefully, if there is refrigerant The outflow is a dirty block, and on the contrary, the refrigerant leaks.
Dirty blockage removal method: remove the capillary, filter, condenser and evaporator by gas welding, replace the molecular sieve in the capillary and filter, clean the condenser and evaporator, dry, vacuumize, re-weld, and fill with refrigerant .