An owner objects to the rental line for a certified recovery unit, arguing that his refrigerant is being put right back where it came from. What does the rule require for taking it out?
Correct Answer
A) Certified recovery equipment is still required, because the rule covers how refrigerant is removed
The allowance for reusing a charge in the appliance it came from is about not having to send it out for reclamation. It says nothing about the equipment. Removing refrigerant from any appliance requires equipment certified for that class of appliance, and for a chiller that means a unit certified to reach the low-pressure level. A vacuum pump is not recovery equipment at all, because it discharges what it removes rather than capturing it.
Why This Is the Correct Answer
Two separate requirements are in play. One governs where the refrigerant may go afterward, and the same-appliance allowance relaxes that one. The other governs the equipment used to remove it, and nothing relaxes that. A chiller charge comes out through equipment certified as meeting the low-pressure appliance standard, whether it is going back in or going to a reclaimer.
Why the Other Options Are Wrong
Option B: Any vacuum pump may be used, because refrigerant returning to the same machine is not recovered
A vacuum pump discharges to the room, so using one to empty a charged appliance is a release. It is not recovery equipment under any circumstances.
Option C: Certified equipment is required only when the charge leaves the site, which it is not doing here
Where the refrigerant ends up does not change the equipment requirement. The rule attaches to the act of removing refrigerant from an appliance.
Option D: The machine's own pump-out unit is exempt, so no certified equipment is needed on this job
A factory pump-out unit is a convenience built into the machine, not an exemption. Whatever is used still has to meet the equipment requirement.
Memory Technique
Where it goes is one rule. How it comes out is another. Only the first one bends.
Reference Hint
Refrigerant must be removed with equipment certified for that appliance class, even when the charge is going back into the same machine.
More epa-608-type-3 Questions
Some jobs on a chiller count as a major repair under the refrigerant rules, which changes what a technician is allowed to do with a badly leaking machine. Which job falls into that category?
An owner asks how many pounds of refrigerant the rules allow to be left inside a chiller once the recovery has been signed off. What is the correct answer to give him?
The motor of a hermetic centrifugal chiller sits inside the pressure boundary rather than outside it on a shaft. What follows from that construction?
An oxygen monitor is used to decide whether a chiller machine room is safe to enter after a refrigerant release. Below what oxygen reading is the atmosphere treated as oxygen deficient?
A low-pressure chiller's rupture disc has a discharge line running from it. Where does that line have to terminate?
A refrigerant vapor detector in a chiller machine room reaches its alarm level. Besides sounding, what is that alarm expected to do?
Which piece of equipment requires a technician to hold Type III certification before it may be serviced?
What property of the refrigerant is what actually places an appliance into the low-pressure category?
During normal operation, what condition exists inside the evaporator of a running low-pressure centrifugal chiller?
In what unit is the required final recovery vacuum for a low-pressure appliance normally expressed?
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During the final pull down on a low-pressure chiller the technician's absolute pressure gauge is holding steady at forty millimeters of mercury. What does that reading mean for the job?
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