How to check superheat on a walk in cooler with success
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1) what is the main reason for getting proper superheat and subcooling on walk in coolers and freezers? Compressor superheat is a temperature measured on the suction line six (6) to eight (8) inches from the compressor and subtracted from the suction pressure when converted to degree f. Check fan motor and its electrical circut.
In the case of the outdoor air there’s no latent heat involved.
What should the target pressure be in an average temp walk in cooler using r404 a. If a system with a receiver has high superheat and the liquid line sight glass is full of liquid (no bubbles), check the metering device. If not, check the tev inlet screen. Lack of airflow across the evaporator will cause the evaporator’s superheat to be lower than normal.
