A.change from blue to orange
B.‘flare up’ and remain lighted
C.probably go out
D.stay blue
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A.flushed with clean refrigerant oil
B.purged with the refrigerant
C.washed with an ammonia and alcohol solution
D.grounded to compressor
A.petroleum crystals
B.phosgene gas
C.water vapor
D.carbon monoxide
A.be clear
B.be blue
C.be light green
D.show bubbles
A.temperature in the space being cooled
B.liquid refrigerant pressure at the solenoid valve
C.pressure drop across the evaporator coils
D.refrigerant gas superheat at the coil outlet
A.act as a pilot from the solenoid valve
B.regulate the amount of refrigerant flow to the coil
C.regulate the water flow
D.turn the compressor off and on
最新試題
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（） is not installed on the main switchboar.
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