Questions and Answers
1. Industrial process and
refrigeration units with a 50 pound charge or more with an
annualized leak rate of or more must have leaks
repaired.: 35
2. Unless plans are made to replace a system exceeding the
maximum leak, repairs must be made in;: 30 days
3. Refrigerants CFC R-12, HCFC R-22, and HFC 134a are all classified as;:
a1
4. All Refrigeration & HVAC systems are protected by a;: pressure relief
valve
5. A refrigerant sensor which will sound an alarm and
1/
5
, automatically start a ventilation system in occupied equipment
rooms fall under;: ASHRAE Standard 15
6. Non-condensables will cause;: High discharge pressure
7. A crankcase heater is often used to prevent refrigerant from
migrating to the oil during periods of:: Low ambient temperature
8. EPA regulations state that maintenance, service or repair
involving the re- moval of the following component is a "major
repair": Pressure switch
9. Which of the following refrigerants is an HCFC?: R-22
10. What can be done with the refrigerant trace gas and nitrogen
after the leak is found?: Release to the atmosphere.
11. High pressure appliances can be evacuated to atmospheric
pressure (O psig) when;: There is a leak
2/
5