Author Question: Why is it necessary to purge gauge manifold valves while they are connected? A) To prevent valve ... (Read 60 times)

jerry coleman · **on:** Jul 24, 2018

Why is it necessary to purge gauge manifold valves while they are connected?

A) To prevent valve damage B) To stop refrigerant loss
C) To prevent contamination of the system D) To preserve the system's charge

Question 2

When can a compound gauge can be connected to a pressure higher than the maximum pressure it can read accurately?

A) Never. Gauges should never be connected to pressures above the maximum pressure that the gauge can accurately read.
B) Only if the hose ends are reversed to prevent overpressurizing the gauges
C) Only if the pressure does not exceed its retard range
D) Anytime. It does not hurt a gauge to be connected to pressures above its rating.