A、refrigerant overcharge
B、overfeeding by the expansion valve
C、a restricted suction strainer
D、due to short cycling of the compressor
更多“If the suction pressure at the refrigeration compressor is below normal, the cause can be（）.”相关的问题
A、capacity will increase B、capacity will decrease C、suction pressure will increase D、suction pressure will decrease
A、the circuit breaker B、for leaks in the suction piping C、relief valve is not properly seated D、the suction strainer
A、to inject cleaning additives when the bilges are extremely dirty B、when the main condenser becomes fouled, in order to provide additional cooling water circulation C、to connect the rose box to the independent bilge suction D、if the bilges become flooded and they can not be emptied by any other means
A、distance of the suction liquid level above the line of the pump B、distance the suction liquid level is below the center line of the pump C、force necessary to overcome frictional losses in the pump and piping D、amount in inches of mercury the total suction head is below atmospheric pressure
A、one size smaller than the pump suction nozzle B、the same size as the pump suction nozzle C、one size larger than the pump suction nozzle D、installed with a short radius elbow at the pump
A、centerline of the pump and the level of the liquid in the suction well when the source of liquid is below the pump B、centerline of the pump and the suction liquid level when the source of liquid is above the pump C、centerline of the pump and the level of the discharge liquid D、liquid levels of the suction and discharge
A、continuous running of the compressor B、high suction pressure C、high discharge pressure D、short cycling of the compressor on the water failure switch
A、one valve seats upwards, while the other seats downwards B、the reed valves used on the discharge are made substantially thicker and heavier than the suction valves C、the suction valve springs exert a greater tension than the discharge valve springs D、the discharge valve springs exert a greater tension than the suction valve springs
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