Fundamentals of Manufacturing Processes (Multiple Choice) 201812 7
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What will not cause the refrigeration compressor oil pressure difference relay (with bimetallic delay mechanism) to shut down is . A. Oil leakage from the crankcase B. Excessive frequent starting C. Severe bearing wear D. The oil pressure control valve is set too tightly. Hint: If the oil pressure is insufficient for a short period after starting, the bimetallic strip will heat up; repeated frequent starts will cause the bimetallic strip to bend, leading to the engine stopping.
D. The oil pressure control valve is adjusted too tightly