A.motor controller overload would open
B.pump would eventually overheat
C.relief valve would continuously cycle open
D.motor would overheat

A.have a greater head capacity
B.operate with increased impeller efficiency
C.discharge through the suction side of the pump casing
D.require more power to run the shaft

A.hydraulic fluid contamination
B.excessive fluid friction
C.turbulent fluid flow
D.fluid pressure surges

A.yearly
B.quarterly
C.monthly
D.daily

A.evaporator pressure decrease
B.evaporator coil over-feed
C.evaporator capacity increase
D.expansion valve diaphragm rupture

A.head capacity to improve
B.discharge to be reversed
C.efficiency to decrease
D.slippage to decrease

A.gums, acids, and varnishes
B.removed by cellulose type filters
C.neutralized by oil additives
D.not removed by absorbent filters

A.repack all valve stems
B.lubricate it prior to use
C.replace the foundation bolts
D.balance the warping heads

A.blue
B.green
C.orange
D.purple

A.blue
B.green
C.orange
D.purple

A.excessive condenser cooling water
B.warm food in the refrigerator
C.a shortage of refrigerant
D.s shortage of compressor oil