Vacuum pumps or recovery machines should not be used on equipment that contains hydrogen.

Everyone in the disposal chain has the responsibility to ensure the refrigerant has been properly recovered.

The refrigerant that is vented from a graduated charging cylinder _______

The technician should access both the high and low side of the refrigerant recovery system in the passive system-dependent refrigerant recovery process because _______

A device is said to be small appliance if _______

When refrigerant R-500 is recovered from refrigeration appliance, _______

The large refrigerant spills can cause breathing problems because __________

Self-contained active recovery devices will recover the refrigerant faster compared to system dependent recovery devices.

The recovery procedure should not be started if the system pressure is _______ after a piercing access valve is installed or opened.

Never transport refrigerant in a charging cylinder.

It is the responsibility of _______ any future changes after the technician becomes certified.

When you use your service manifold to check the refrigeration system pressure, it's best to _______

In a small appliance, which of the following refrigerant can be used as a direct service “drop-in” substitute for R-12?

The recovery equipment manufactured after November 1993 must be able to remove _______ of refrigerant from the refrigeration system with compressor operating.

System-dependent recovery device cannot be used for larger appliances which is more than 15 pounds of charge such as a centrifugal air conditioner.