A technician is told that a supermarket rack now runs on a blend that contains no chlorine and therefore does not deplete the ozone layer. How does that change the certification and handling requirements for the rack?
Correct Answer
B) It does not change them, because the venting prohibition and the technician certification requirement also cover substitute refrigerants
The venting prohibition was extended years ago to cover substitute refrigerants, not just the original ozone-depleting products. A chlorine-free blend still may not be knowingly released, must still be recovered by a certified technician using certified equipment, and the appliance is still classified by the boiling point of what is in it. A supermarket rack running such a blend remains a high-pressure appliance needing Type II. The chemistry changed; the technician's obligations did not.
Why This Is the Correct Answer
Substitute refrigerants were brought under the venting prohibition and the service practice requirements, so certification, certified recovery equipment and the ban on knowing release all still apply. The pressure class is determined by boiling point at atmospheric pressure, which for these blends keeps the appliance in the high-pressure group.
Why the Other Options Are Wrong
Option A: The rack no longer counts as a covered appliance, so anyone in the shop may open the circuit without a certification card
An appliance is defined by what the equipment is and what it does, not by whether its refrigerant depletes ozone. A supermarket rack stays a covered appliance, and opening its circuit still calls for a certified technician.
Option C: Only the recovery requirement drops away for a chlorine-free blend, while the technician certification requirement continues to apply to the rack
Recovery is required for substitute refrigerants exactly as it is for the older ones. Splitting the requirements so that certification survives but recovery lapses describes a rule that has never existed.
Option D: The rack moves into the low-pressure class, because blends formulated without chlorine run at noticeably lower pressures
Pressure class follows the boiling point of the refrigerant, and the common chlorine-free replacements run at pressures equal to or higher than what they replace. Removing chlorine does not lower operating pressure.
Memory Technique
No chlorine, still no venting. The hose gets recovered either way.
Reference Hint
40 CFR Part 82, Subpart F extends the prohibition on knowingly venting to substitute refrigerants, and service practice requirements apply to them as well.
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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Previous Question
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?
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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?