EPA 608 Type 2 Exam Questions &
Answers Updated Solution
1. Heat pumps that have been retrofitted from R22 to R407C should be leak checked with: - ANS ✔✔
- pressurized nitrogen
2. When a new system has been assembled, the first thing to do is: - ANS ✔✔ - pressurize the system
with inert gas and leak check
3. EPA regulations require that leaking commercial or industrial process refrigeration equipment
must be repaired when the leak rate exceeds______ of the charge per year. - ANS ✔✔ - 35%
4. Prior to replacing the condenser coil in a high pressure system, the refrigerant was recovered and
stored in a refillable container. The refrigerant: - ANS ✔✔ - can probably be charged back into the
system
5. R-410A requires recovery tanks rated for at least: - ANS ✔✔ - 400 psig
6. to recover liquid refrigerant you must connect one hose to the - ANS ✔✔ - liquid line
7. The primary water source for cooling the condenser of a water-cooled recovery unit is: - ANS ✔✔ -
local municipal water supply
8. After refrigerant liquid has been recovered from a system, any remaining vapor is: - ANS ✔✔ -
condensed by the recovery system
9. With an air-cooled condenser on the roof of a building and the evaporator on the first floor,
recovery should first occur: - ANS ✔✔ - from the liquid line entering the evaporator
Answers Updated Solution
1. Heat pumps that have been retrofitted from R22 to R407C should be leak checked with: - ANS ✔✔
- pressurized nitrogen
2. When a new system has been assembled, the first thing to do is: - ANS ✔✔ - pressurize the system
with inert gas and leak check
3. EPA regulations require that leaking commercial or industrial process refrigeration equipment
must be repaired when the leak rate exceeds______ of the charge per year. - ANS ✔✔ - 35%
4. Prior to replacing the condenser coil in a high pressure system, the refrigerant was recovered and
stored in a refillable container. The refrigerant: - ANS ✔✔ - can probably be charged back into the
system
5. R-410A requires recovery tanks rated for at least: - ANS ✔✔ - 400 psig
6. to recover liquid refrigerant you must connect one hose to the - ANS ✔✔ - liquid line
7. The primary water source for cooling the condenser of a water-cooled recovery unit is: - ANS ✔✔ -
local municipal water supply
8. After refrigerant liquid has been recovered from a system, any remaining vapor is: - ANS ✔✔ -
condensed by the recovery system
9. With an air-cooled condenser on the roof of a building and the evaporator on the first floor,
recovery should first occur: - ANS ✔✔ - from the liquid line entering the evaporator
