112 study guide

Front

What is the maximum amount of refrigerant that a recovery cylinder should obtain?

Back

80% water capacity

Front

During push-pull liquid recovery, vapor refrigerant is pulled from the

Back

recovery cylinder

Front

if the entire refrigerant charge has leaked from a system, then a ____ should be used to pressurized the system.

Back

inert gas

Front

Which evacuation method involves charging a system with nitrogen to absorb moisture? Options: passive evac, vapor evac, deep evac, triple evac

Back

triple evac

Front

When charging a system with refrigerant, the tech should put the low and high side service valves in

Back

mid-position

Front

What is the superheat of a system if the refrigerant temp in the suction line is 58F, its pressure in the evaporator is 60 psig, and the temp is 34f?

Back

24f

Front

The process of pumping a systems entire refrigerant charge into a liquid receiver is called a

Back

pump down

Front

To determine a systems subcooling value, the liquid line temperature should be subtracted from the: evaporator, compressor, suction line, condenser.

Back

condenser

Front

many recovery cylinders use a ____ as a safety device to turn off the recovery machine when the cylinder is 80% full.

Back

liquid level switch

Front

calculate the tare weight of a cylinder if its total weight is 590 lbs and the weight of refrigerant of the cylinder is 450 lb.

Back

140 lb