Author Question: If a technician needs to read the refrigerant pressure of a window unit, they must: A) Use a hose ... (Read 47 times)

nummyann · **on:** Jul 24, 2018

If a technician needs to read the refrigerant pressure of a window unit, they must:

A) Use a hose that has a depressor core for the Schrader valve.
B) Backseat crack the compressor access valve.
C) First cut open the process stub on the compressor.
D) Use a piercing valve.

Question 2

Compared to air-conditioning evaporator coils, commercial refrigeration coils have:

A) Materials that are less brittle at low temperatures.
B) About the same number of fins per inch.
C) Fewer fins per inch.
D) More fins per inch.