Industrial process and refrigeration units with a 50 pound charge or more with an
annualized leak rate of _____ or more must have leaks repaired. -Correct Ans-35
Unless plans are made to replace a system exceeding the maximum leak, repairs must
be made in; -Correct Ans-30 days
Refrigerants CFC R-12, HCFC R-22, and HFC 134a are all classified as; -Correct Ans-a 1
All Refrigeration & HVAC systems are protected by a; -Correct Ans-pressure relief valve
A refrigerant sensor which will sound an alarm and automatically start a ventilation
system in occupied equipment rooms fall under; -Correct Ans-ASHRAE Standard 15
Non-condensables will cause; -Correct Ans-High discharge pressure
A crankcase heater is often used to prevent refrigerant from migrating to the oil during
periods of: -Correct Ans-Low ambient temperature
EPA regulations state that maintenance, service or repair involving the removal of the
following component is a "major repair" -Correct Ans-Pressure switch
Which of the following refrigerants is an HCFC? -Correct Ans-R-22
What can be done with the refrigerant trace gas and nitrogen after the leak is found? -
Correct Ans-Release to the atmosphere.