Oil drained from a recovery machine during routine service still holds dissolved refrigerant. How should that used oil be handled?
Correct Answer
C) Collect it in a sealed container and dispose of it as used oil under the applicable waste rules
Oil that comes out of a recovery machine has been through other people's systems. It carries acid, moisture, and dissolved refrigerant. Letting it sit open so the refrigerant escapes is a deliberate release, and putting contaminated oil back into any system spreads the contamination. The correct handling is to capture it in a closed container and send it out through the shop's used oil stream under whatever federal, state, and local waste rules apply.
Why This Is the Correct Answer
Used recovery machine oil goes into a sealed container and out through the shop's used oil disposal. Keeping it closed prevents the dissolved refrigerant from escaping, and treating it as regulated used oil handles the acid and moisture it carries rather than pushing that contamination into another system.
Why the Other Options Are Wrong
Option A: Pour it into a shallow open pan so the refrigerant evaporates out before disposal
Letting refrigerant evaporate out of an open pan is a knowing release under a different name. The venting prohibition covers refrigerant leaving in any form during service or maintenance.
Option B: Return it to the appliance it originally came from during the next recharge
Oil from a recovery machine has been mixed with oil from many systems and carries contaminants from all of them. Putting it into a customer's appliance would introduce acid and moisture into a clean system.
Option D: Blend it with fresh refrigeration oil and put it back into the recovery machine
Diluting contaminated oil does not remove acid or moisture, and reusing it defeats the purpose of the oil change that was just performed.
Memory Technique
Closed container in, closed container out. Oil that has seen other systems never goes into a customer's box.
Reference Hint
40 CFR 82.154 venting prohibition; used oil handled under applicable federal and state used oil requirements.
More epa-608-type-1 Questions
A technician certified under Section 608 is asked to service the air conditioning system in a customer's pickup truck. What credential does that particular job actually require?
Facing an unfamiliar packaged refrigeration unit on the bench, how should a technician decide whether the small appliance rules apply to it?
What feature defines a self-contained recovery unit and sets it apart from the system-dependent kind?
When system-dependent recovery equipment is used on a small appliance whose compressor still runs, how can that working compressor be put to use?
Recovery from a small appliance has slowed down and the pressure is barely moving. What accepted technique helps drive the remaining refrigerant out?
After the recovery unit stops pulling on a small appliance, how does a technician confirm that the recovery is actually complete?
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