Author Question: What is the normal pressure range for high pressure gauges made for use on R-410A systems? A) 0 - ... (Read 113 times)

cabate · **on:** Jul 26, 2018

What is the normal pressure range for high pressure gauges made for use on R-410A systems?

A) 0 - 30 Hg vacuum and 0 - 350 psig pressure B) 0 - 500 psig pressure
C) 0 - 800 psig pressure D) 0 - 30 Hg vacuum and 0 - 120 psig pressure

Question 2

Before any cutting or welding is performed, what must be available in the work area?

a. An oxygen supply
b. Cleaning rags and solvent
c. Approved fire extinguishers
d. At least one secondary disconnect