Air Conditioning and Refrigeration Components

What component of a refrigeration unit is most likely to leak if the unit is not used for several months?

a) suction service valve

b) rotating shaft seal

c) oil drain plug

d) discharge service valve

Answer:

The rotating shaft seal is most likely to leak on an open compressor refrigeration unit after not being used for a while.

On refrigeration units that use an open compressor, the component most likely to leak if the unit is not used for several months is the rotating shaft seal. This part is susceptible because it contains moving parts and can dry out when not in use, leading to leaks.

In contrast, service valves and oil drain plugs are less likely to have this issue due to their static nature and tight seal.

The condenser is the air conditioner component responsible for converting refrigerant gas into liquid. The condenser's primary function is to facilitate heat transfer, which results in the condensation of the refrigerant gas back into liquid form.