Chapter 8 Exam Questions With Correct
Answers.
If a refrigeration system has a capillary tube metering device, then the _____ method should be
used to check the charge in the system. - answer✔✔Superheat
Most refrigeration systems have a sub cooling value between ____ F• - answer✔✔10-20
Superheat is equal to the suction line temperature minus the ____temperature -
answer✔✔Evaporator
If the ___ is low, then there is an excessive refrigerant charge in the system. -
answer✔✔Superheat
Performing a pump-down involves moving all the refrigerant in a system to the ___. -
answer✔✔Liquid receiver
Passive recovery may involve using the ____ to pump refrigerant out of the system. -
answer✔✔Compressor
Active recovery methods use ___ to recover refrigerant from a system - answer✔✔A recovery
machine
During vapor recovery, the low- and high side service valves should be ___. - answer✔✔Mid-
positioned
Liquid recovery must be used in combination with ___ in order to remove a system's entire
refrigerant charge. - answer✔✔Vapor recovery
The push-pull liquid recovery method pulls vapor refrigerant from the ___. -
answer✔✔Recovery cylinder
There should always be a ___between the refrigeration system and the recovery machine to
protect the machine from contamination. - answer✔✔Filter-drier
The maximum amount of refrigerant that can be stored in a recovery cylinder is equal to 80% of
cylinder's __ by weight. - answer✔✔Water capacity