1.
Which action is generally prohibited under EPA Section 608 when servicing stationary refrigeration or air-conditioning equipment?
2.
Which refrigerant family has zero ozone depletion potential because it does not contain chlorine or bromine?
3.
What is the main reason CFC and HCFC refrigerants can damage the stratospheric ozone layer?
4.
Which statement best describes the difference between recover, recycle, and reclaim?
5.
Why should different refrigerants not be mixed in the same recovery cylinder?
6.
Which cylinder color combination is commonly associated with reusable refrigerant recovery cylinders?
7.
Why should a recovery cylinder not be filled beyond 80 percent of its liquid capacity?
8.
Which gas is preferred for pressurizing a system for leak checking after refrigerant has been recovered?
9.
Which practice helps speed up refrigerant recovery?
10.
Which personal protective equipment is most appropriate when handling refrigerant where liquid contact is possible?
11.
Under EPA Section 608, Type I certification is primarily for servicing which equipment?
12.
When using a system-dependent recovery device on a small appliance with an operating compressor, what should the technician generally do?
13.
For a small appliance with an inoperative compressor, what access is generally needed for effective recovery?
14.
After using a solderless piercing access fitting on a small appliance, what should normally happen at the end of service?
15.
Type II certification applies to servicing or disposing of which equipment?
16.
Why is liquid recovery often started first on large high-pressure systems when possible?
17.
After reaching the required vacuum level during recovery, why should a technician wait and watch for a pressure rise?
18.
Why should a hermetic compressor generally not be energized while the system is in a deep vacuum?
19.
For appliances with a full charge of 50 pounds or more, which annual leak-rate threshold is associated with comfort cooling equipment under Section 608 rules?
20.
Before charging or recharging a system that had a leak, what should a technician generally do?
21.
Type III certification applies primarily to which equipment?
22.
What is the purpose of a purge unit on a low-pressure chiller?
23.
Why must technicians be careful to prevent water from freezing during evacuation of a low-pressure chiller?
24.
When removing oil from a low-pressure system, why is the oil often heated first?
25.
What does Universal certification allow a technician to service under Section 608?
