EPA 608 609 Type II High-Pressure Systems 2

Question 1

Which refrigerant is most commonly associated with Type II high-pressure appliances?

Accepted Answer

R-22

Answer

R-22 is the classic high-pressure refrigerant covered under Type II certification.

Question 2

A high-pressure appliance with 50 lbs of charge that is not being disposed of must be repaired within how many days of a leak being detected?

Accepted Answer

30 days

Answer

Leaks on appliances with 50+ lbs of charge generally must be repaired within 30 days.

Question 3

Before opening a high-pressure system for service, the refrigerant should be recovered to what level for a system with an open compressor?

Accepted Answer

4 inches of vacuum

Answer

Open-drive compressors before 1993 require recovery to 4 inches of mercury vacuum.

Question 4

What is the required recovery vacuum level for a high-pressure appliance with more than 200 lbs of charge manufactured after November 15, 1993?

Accepted Answer

15 inches Hg vacuum

Answer

Appliances over 200 lbs made after 1993 must be evacuated to 15 inches of mercury vacuum.

Question 5

Which device measures the depth of vacuum achieved during evacuation of a high-pressure system?

Accepted Answer

Micron gauge

Answer

A micron gauge accurately measures deep vacuum levels during evacuation.

EPA 608 609 Practice Test