What are The Symptoms And Remedies of Over Charging And Under Charging

Over Charging

Symptoms

> Compressor runs cold.

> High compressor discharge pressure.

> Excess frost on compressor suction line after evaporator.

> Sight glass shows full of refrigerant

Remedies

> Collect excess refrigerant gas to collecting bottle


Under Charging

> Low discharge pressure

> Large bubbles in the liquid sight glass

> Compressor delivery temperature high.

> Compressor continuously run without cut off or the cutoff interval will be too long

Remedies

> To charge the refrigerant until the bubbles disappear in the liquid sight glass and charging will correct the pressure gauge reading.

> To find out the leaky points by halide torch or soap solution or electronic leak detector.


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