Open-drive compressors are typically _____ compressors

When recovering R-11 and R-23 from a low pressure system, in order to reduce the time of recovery it has to be recovered in:

A rupture disc opens at ______ on a low pressure system:

The EPA requires that all commercial and industrial process refrigeration systems with more than 50lb of refrigerant be repaired when the annual leak rate exceeds ______:

When using recovery or recycling equipment manufactured or imported on or after Nov 15, 1993, the required level of evacuation for low pressure equipment is _____ Hg absolute:

All refrigeration recovery cylinders must be _____ approved:

The purge unit takes its suction from the top of the ______

To ensure the purge unit will perform to its published efficiency rating, verify the unit is ARI-certified to Standard _______

Reverse-acting rupture discs, which are installed with the process pressure against the ______ side of the disc

Every ______ months or as required by the manufacturer of your unit, check the recovery or recycling unit for leaks.