Reciprocating chillers have crankcase heaters to ____.
A) preheat the chilled water for better efficiency
B) prevent refrigerant migration to the crankcase
C) preheat the compressor bearings for longer wear
D) minimize condenser subcooling

Question

Quizplus · Accepted Answer

Crankcase heaters are used to prevent refrigerant migration to the crankcase during off-cycle periods. Refrigerant can migrate to the crankcase due to temperature differences between the evaporator and compressor during off-cycle periods, which can lead to compressor damage if not prevented.

Reciprocating Chillers Have Crankcase Heaters to ____