Type II High-Pressure Systems Flashcards
7 cards from real EPA 608 609 practice questions. Tap to flip, then mark Knew It or Still Learning — missed cards come back until you master them.
Read the first 7 Type II High-Pressure Systems flashcards as text
Which refrigerant is most commonly associated with Type II high-pressure appliances?
Answer: R-22
R-22 is the classic high-pressure refrigerant covered under Type II certification.
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?
Answer: 30 days
Leaks on appliances with 50+ lbs of charge generally must be repaired within 30 days.
Before opening a high-pressure system for service, the refrigerant should be recovered to what level for a system with an open compressor?
Answer: 4 inches of vacuum
Open-drive compressors before 1993 require recovery to 4 inches of mercury vacuum.
What is the required recovery vacuum level for a high-pressure appliance with more than 200 lbs of charge manufactured after November 15, 1993?
Answer: 15 inches Hg vacuum
Appliances over 200 lbs made after 1993 must be evacuated to 15 inches of mercury vacuum.
Which device measures the depth of vacuum achieved during evacuation of a high-pressure system?
Answer: Micron gauge
A micron gauge accurately measures deep vacuum levels during evacuation.
Non-condensable gases such as air in a high-pressure system primarily cause what problem?
Answer: Higher head pressure
Air and other non-condensables raise head pressure and reduce efficiency.
What color is the high-pressure (liquid line) side gauge on a typical manifold gauge set?
Answer: Red
The red gauge reads the high-pressure side of the system.