Refrigeration

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When refrigeration systems are exposed to low-ambient conditions, the condensing pressure (head pressure) will fall. If the head pressure gets too low, the metering device will not have enough pressure drop across it to operate properly.

Any time an oil pressure control shuts down a compressor, the cause of the shutdown must be identified. The tripped control is a warning of another existing problem. Simply resetting the control will not solve the problem.

The ‘R’ in Refrigeration Service Engineers Society (RSES) got its due at the 76th RSES Annual Conference and HVACR Technology Expo in Pittsburgh, Pa. Topics ranged from the latest trends in refrigerants to the servicing of equipment, from basic components to complex systems using such refrigerants.

The proposal picks up on a previous timeline in production that allowed 62.8 million pounds of new R-22 in 2013 and 51 million pounds in 2014.

Compatible with all common refrigerants, the company’s refrigeration seals fit all 45-degree flared fittings. 

Marchese, who serves as a monthly columnist in The NEWS’ Refrigeration Zone section, was elected during the 76th annual RSES Conference and HVACR Technology Expo this past October.