A convenience store runs six separate refrigeration systems, the largest holding forty pounds of R-404A and the others less, adding up to well over one hundred pounds on the site. How are those charges counted against the fifty pound leak repair threshold?
Correct Answer
B) Each system is judged on its own charge, so none reaches the threshold
The leak repair provisions attach to an appliance, and each of these six systems is its own appliance with its own refrigerant circuit and its own full charge. Nothing in the rules totals charges across a building, a room or an owner. The largest system here holds forty pounds, which is under the fifty pound figure, so none of them brings the store under the leak repair provisions even though the site holds well over a hundred pounds in total.
Why This Is the Correct Answer
Each independent refrigerant circuit is an appliance and is measured against the threshold on its own full charge. Refrigerant in one system cannot reach another, so there is no basis for adding them together. With the largest at forty pounds, none of the six crosses the fifty pound line, and the store is not brought under the leak repair provisions by its site total.
Why the Other Options Are Wrong
Option A: The site total is used, so the store is above the threshold
Site totals appear nowhere in the regulation. Adding unrelated systems together would put almost every commercial building above the threshold.
Option C: Systems sharing one machine room are counted together as one charge
Sharing a machine room is a matter of where equipment is installed. It does not join separate refrigerant circuits into one appliance.
Option D: The yearly total of refrigerant purchased for the store is what counts
Annual purchases measure what an owner buys, not what any single appliance holds. The threshold is written around an appliance's full charge.
Memory Technique
Six systems, six separate questions. Refrigerant that cannot flow between them cannot be added together.
Reference Hint
The fifty pound leak repair threshold is measured against each appliance's own full charge, not against a site total.
More epa-608-type-2 Questions
A walk-in cooler condensing unit holds a full charge of twenty-five pounds of R-404A, which is below the fifty pound threshold that brings an appliance under the leak repair provisions. What still applies to this unit?
An office building has thirty water source heat pumps on a common water loop, and each one left the factory assembled, hermetically sealed and charged with four pounds of R-410A. How is one of those units classified?
A data sheet for an unfamiliar refrigerant lists a boiling point of about fifty-five degrees Fahrenheit at atmospheric pressure. What does that tell a technician holding Core and Type II certification?
A technician holds Core, Type I and Type III certification and is sent to recover the charge from a twenty ton rooftop unit charged with R-410A. What does that combination of sections allow on this job?
A fleet garage technician holds only the vehicle air conditioning certification issued under Section 609 and is asked to recover the charge from the shop's own rooftop air conditioner. What does that credential allow?
A split system's outdoor unit, indoor coil and the line set the installer ran and brazed between them are being considered. For the purposes of the refrigerant rules, what makes up the appliance here?
On a new installation the line set is brazed to a factory charged outdoor unit and an indoor coil shipped under a nitrogen holding charge, with the outdoor unit's service valves still closed. What does the recovery requirement call for before that brazing?
A rooftop unit's data plate has weathered until the charge figure cannot be read, and the technician needs the full charge to place the appliance under the evacuation and leak provisions. Where should that figure come from?
A computer room air conditioning unit holds forty pounds of R-407C and connects to a remote air cooled condenser through refrigerant piping run and brazed by the installer. How is that unit classified?
A shop's office manager, who holds no technician certification, is sent to a supply house to pick up a new recovery machine for the commercial crew. What does the sales restriction require at that counter?
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