2025
Industrial process and refrigeration units with a 50 pound charge or more with an annualized
leak rate of _____ or more must have leaks repaired. - ANSWER 35%
Unless plans are made to replace a system exceeding the maximum leak, repairs must be made
in; - ANSWER 30 days
Refrigerants CFC R-12, HCFC R-22, and HFC 134a are all classified as; - ANSWER type A- 1
All Refrigeration & HVAC systems are protected by a; - ANSWER pressure relief valve
A refrigerant sensor which will sound an alarm and automatically start a ventilation system in
occupied equipment rooms fall under; - ANSWER ASHRAE 15
Non-condensables will cause; - ANSWER higher discharge pressure
A crankcase heater is often used to prevent refrigerant from migrating to the oil during periods
of: - ANSWER low ambient temperature
EPA regulations state that maintenance, service or repair involving the removal of the following
component is a "major repair" - ANSWER compressor
What refrigerant can be used as a trace gas when checking for leaks? - ANSWER R410A
What can be done with the refrigerant trace gas and nitrogen after the leak is found? - ANSWER
recover in a special tank