Author Question: The fastest method for charging a large system that holds 50 lb of refrigerant is to add: A) ... (Read 225 times)

dollx · **on:** Jul 24, 2018

The fastest method for charging a large system that holds 50 lb of refrigerant is to add:

A) Liquid into the king valve with the king valve front-seated and the system operating.
B) Liquid into the suction service valve with the system running.
C) Vapor into the suction service valve with the system off.
D) Vapor into both the suction service valve and king valve with the system off.

Question 2

To avoid falling, when working above a sheetrock ceiling technicians should:

A) Walk quickly whenever it is necessary to walk directly on the sheetrock.
B) Walk slowly whenever it is necessary to walk directly on the sheetrock.
C) Step only on the sheetrock between the ceiling joists.
D) Step only on the ceiling joists.