A packaged rooftop unit was assembled, charged, and hermetically sealed at the factory, but its nameplate lists a 12 pound charge of R-410A. What does that charge amount mean for its classification?
Correct Answer
D) It carries more than five pounds, so it is high-pressure equipment that requires Type II certification
Factory assembly and factory sealing are necessary but not sufficient. The definition also caps the charge at five pounds, and a 12 pound nameplate charge blows past that cap. A unit built entirely at the factory but holding more than five pounds is regulated as high-pressure equipment, so a technician needs Type II certification to open the circuit and must follow the Type II evacuation requirements rather than the small appliance percentages.
Why This Is the Correct Answer
The small appliance definition sets a hard ceiling of five pounds of refrigerant. Once the nameplate shows more than that, the unit leaves the category no matter how it was built. A factory-sealed packaged rooftop holding 12 pounds is a high-pressure appliance, which is Type II territory for both the certification and the evacuation requirements.
Why the Other Options Are Wrong
Option A: It stays a small appliance, because every joint in the circuit was made at the factory
Factory assembly is only one condition. The definition also limits the charge to five pounds, and this unit is well over that, so the factory workmanship does not keep it in the small appliance group.
Option B: It stays a small appliance, because the charge is still below the fifteen pound line used for passive recovery
Fifteen pounds is the ceiling for using system-dependent recovery equipment, not the ceiling for the small appliance definition. Mixing those two numbers is a common trap, and this unit exceeds the five pound definition limit either way.
Option C: It is exempt from the recovery rules entirely, because it is charged with an HFC blend
Section 608 covers HFCs the same way it covers CFCs and HCFCs when it comes to venting and recovery. Choosing a refrigerant with no ozone depletion potential does not remove the appliance from the recovery requirements.
Memory Technique
Five to stay alive as a small appliance. Fifteen is a different rule about the passive kit, not about the definition.
Reference Hint
40 CFR 82.152 caps a small appliance at five pounds or less of refrigerant. Above that, high-pressure appliances fall under Type II.
More epa-608-type-1 Questions
An under-counter ice maker is one factory-sealed cabinet, while a modular ice machine head is joined to a remote condenser by field-run tubing. What certification does servicing the modular machine's circuit require?
A technician recovers refrigerant from a small appliance using a recovery machine that was manufactured in 1991. What recovery level must that older equipment achieve?
Two technicians recover from identical refrigerators with working compressors, one using a 1991 recovery machine and the other a 2015 machine. Why do their required recovery levels differ?
System-dependent recovery equipment may be used only on appliances that normally hold up to what amount of refrigerant?
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?
A sealed small appliance offers no service port at all. What has to happen before recovery equipment can be connected to it?
As refrigerant from a string of small appliances collects in a recovery cylinder, what fill limit applies to that cylinder?
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Section 608 sets the small appliance recovery target as a percentage of the charge instead of every last ounce in the system. What physical reason makes that final fraction impractical to pull out?
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