A.Carbon build up in the piston ring belt
B.Faulty operation of a cylinder un-loader
C.Compressor operation in an area of high relative humidity
D.Lifting of intercooler rebel valve
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A.system was overcharged with refrigerant
B.system was low on refrigerant
C.suction valves were leaking slightly
D.relief valve was leaking slightly
A.broken inlet valves
B.broken discharge valves
C.pulsations in the air distribution system
D.overloading of the air distribution system
A.warping head
B.fairlead
C.wildcat
D.capstan
A.system was overcharged with refrigerant
B.high pressure switch was improperly adjusted
C.expansion valve strainers were fouled
D.suction valves were leaking slightly
A.increased pump speed
B.excessive pump discharge pressure
C.too low of a tilting box angle
D.low pump speed
最新試題
If the head pressure of a reciprocating refrigeration compressor is excessive, ().
An increasing head pressure in a refrigeration system, without any corresponding change in the cooling water inlet temperature, would probably be caused by ().
An internal bypass is provided on some hydraulic system suction strainers to help reduce the possibility of ().
A gradual decrease in the discharge pressure of an operating hydraulic pump can be caused by ().
An excessive charge of refrigerant in an air-cooled refrigeration system can cause ().
Which of the following statements is correct concerning heat transfer?()
If the suction pressure at the refrigeration compressor is below normal, the cause can be().
Heavy wear in a particular area of the inner circumference of a packing ring may be caused by ().
If the relief valve on the discharge side of a hydraulic pump lifts, the cause could be ().
A salinity indicator is used to determine the ().