EPA 608 609 Type I 2 — Questions and Answers
Question 1: Type I certification covers servicing which kind of appliance?
- Small appliances with 5 lbs or less of refrigerant (Correct answer)
- High-pressure systems over 50 lbs
- Motor vehicle air conditioners
- Low-pressure chillers
Correct answer: Small appliances with 5 lbs or less of refrigerant
Type I certification is for small appliances manufactured, charged, and hermetically sealed with 5 pounds or less of refrigerant.
Question 2: What is the minimum required recovery efficiency when using recovery equipment manufactured before November 15, 1993 on a small appliance?
- 80%
- 90% with operating compressor / 80% with inoperative compressor (Correct answer)
- 100%
- 70%
Correct answer: 90% with operating compressor / 80% with inoperative compressor
Older recovery equipment must recover 90% of refrigerant when the appliance compressor works and 80% when it does not.
Question 3: For recovery equipment manufactured after November 15, 1993, what recovery level is required for small appliances?
- 80% always
- 90% with working compressor / 80% without
- 90% or 4 inches of vacuum (Correct answer)
- 100% recovery
Correct answer: 90% or 4 inches of vacuum
Newer recovery equipment must recover 90% of refrigerant or evacuate the small appliance to 4 inches of mercury vacuum.
Question 4: A 'system-dependent' (passive) recovery device relies on what to remove refrigerant?
- The appliance's own compressor and pressure (Correct answer)
- An external vacuum pump only
- Heat from a torch
- A nitrogen purge
Correct answer: The appliance's own compressor and pressure
System-dependent recovery uses the appliance's internal pressure and/or compressor to push refrigerant into a recovery container.
Question 5: System-dependent recovery equipment may only be used on appliances containing how much refrigerant?
- 15 lbs or less
- 5 lbs or less (Correct answer)
- 50 lbs or less
- Any amount
Correct answer: 5 lbs or less
Passive (system-dependent) recovery is restricted to small appliances with 15 pounds or less of refrigerant — but Type I appliances are 5 lbs or less.
Question 6: When recovering from a small appliance with an inoperative compressor, what improves recovery?
- Accessing both the high and low sides of the system (Correct answer)
- Only the suction line
- Heating the recovery cylinder
- Adding oil to the system
Correct answer: Accessing both the high and low sides of the system
Accessing both sides of the system speeds and improves recovery when the compressor cannot circulate refrigerant.
Question 7: Striking or tapping the compressor of a small appliance during recovery is intended to do what?
- Free trapped refrigerant and oil (Correct answer)
- Test the relay
- Break the hermetic seal
- Cool the compressor
Correct answer: Free trapped refrigerant and oil
Light tapping can dislodge refrigerant and oil trapped inside the compressor so more can be recovered.
EPA 608 609 Type I 2
Type I certification covers servicing which kind of appliance?