When recovering refrigerant from a medium-pressure system with more than 200 lbs. of refrigerant, you must recover to a level of _____.

EPA regulations state that removal of which component constitutes a "major repair"?

Your recovery/recycling machine has R-22 refrigerant in it. You now have to recover refrigerant from a unit with R-410A. What must be done before your recovery unit can be used to recover R-410A?

Proper recovery techniques begin with the use of appropriate recovery equipment that has been certified by _______.

During a recovery process, an increase in system pressure after a few minutes of achieving a vacuum means ______.

A high-pressure appliance containing 210 lbs. of R-407C refrigerant must be evacuated (recovered) to a level of ______.

Which of the following is NOT a major repair?

Disposable cylinders must be ______.

What can be done with a refrigerant trace gas and nitrogen mixture after a system leak is found?

A high-pressure appliance containing less than 200 lbs. of an HCFC or HFC refrigerant must be evacuated (recovered) to a level of _____.

After the installation of any type of system, the unit should first be _______.

Non-condensables will cause _______.

If a leaking appliance with a regulated refrigerant is not going to be repaired, it must be _____.

When charging an R-12 refrigeration system that uses a water-cooled condenser, you must first charge with vapor to a pressure of at least _____ before switching to liquid charging.

Leaks must be repaired on industrial process and refrigeration units with a 50-pound charge or greater when the annualized leak rate reaches _____ or more.