A technician is sent to recover the charge from a twenty ton rooftop unit and the only machine available is one certified for use with small appliances. What does the equipment rule require here?
Correct Answer
A) A machine certified for appliances other than small appliances must be used
Recovery and recycling equipment is certified against the category of appliance it is built to serve. A machine certified only for small appliances has been tested against the small appliance standard and is not approved for use on other equipment, whatever the technician does with it. A twenty ton rooftop unit needs a machine certified for appliances other than small appliances, which is what the certification label on the machine will say.
Why This Is the Correct Answer
Equipment certification is category specific. Machines are tested and labelled either for small appliances or for appliances other than small appliances, and the label states which. A twenty ton rooftop is firmly in the second group, so a machine carrying only the small appliance certification is the wrong tool no matter how it is operated or how long it runs.
Why the Other Options Are Wrong
Option B: The small appliance machine may be used if it is run for a longer period
Running longer does not change what a machine was certified against. Certification describes the equipment, not the duration of the job.
Option C: Any machine may be used as long as the technician holds Type II certification
Technician certification and equipment certification are separate requirements. Holding Type II does not make an uncertified machine acceptable for the job.
Option D: The small appliance machine may be used if the charge is recovered as vapor
The recovery method makes no difference to the certification category. Vapor recovery on a large appliance still calls for a machine certified for it.
Memory Technique
Check two labels before you start: the card in your wallet and the plate on the machine.
Reference Hint
Recovery equipment is certified either for small appliances or for appliances other than small appliances, and the label says which.
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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