An electronic leak detector can detect leak rates of about ______ per year

Duration time for repairing substantial leak shall be within:

According to ASHRAE Guideline 3-1996, a system should be checked for leaks if the pressure in a system rises from 1 mm Hg to a level above ______ during a standing vacuum test.

Slightly ______ refrigerant leaves the condenser

Recovering refrigerant in _____ phase will not remove the oil from the system

The PRIMARY purpose of a purge unit on any low-pressure system is to remove non-condensable gases and impure oil from the system

Recovering refrigerant from a system as a ______ is faster:

The leak-testing blend (nitrogen plus the leak check gas) shall be recovered as per ASHRAE

The leakage rate is calculated by determining the current leak rate and projecting it over a _____ period

When the pressure in the system is reduced, the recovery will be _____