A.the system is fully charged
B.there is air leaking in from the condenser
C.ice crystals are forming in the refrigerant
D.the system contains less than a full charge of refrigerant
您可能感興趣的試卷
你可能感興趣的試題
A.Simplex
B.Duplex
C.Canister
D.Bypass
A.condition of the expansion valve
B.moisture in the system
C.condition of the compressor suction valves
D.condenser temperature
A.trick wheel
B.accumulator
C.standby pump
D.telemotor
A.Open the bilge pump for inspection
B.Remove each of the manifold valves
C.Remove only the manifold valve to the affected bilge-well
D.Attempt to pump out another bilge well to determine if the entire system is affected
A.too much refrigerant in the system
B.oil entrained in the refrigerant
C.less than a full charge of refrigerant in the system
D.ice crystals forming in the refrigerant
最新試題
Pitting in the suction areas of a centrifugal pump bronze impeller is usually caused by ().
The rate of heat transfer from a hot region to a cold region is affected most by the ().
Which of the problems listed would came the discharge temperature of an R-12 refrigeration compressor to increase?()
The rate of heat transfer between the hot and cold fluids passing through a shell-and-tube type heat exchanger will ().
If the thermal bulb of an expansion valve is incorrectly placed at the center of the coil instead of the end, it will ().
If the viscosity of the liquid being transferred remains constant as the discharge pressure increases, the rotary pump ().
The major source of chemical contaminants in hydraulic fluid is ().
Heavy wear in a particular area of the inner circumference of a packing ring may be caused by ().
The usual symptoms of cavitation in a centrifugal pump is ().
On tank vessels equipped with power operated cargo tank valves, the type of power operator most commonly used is ().