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?
Correct Answer
B) Eighty percent of the refrigerant in the appliance
The small appliance recovery standard is tied to when the recovery equipment was built. Machines manufactured on or after November 15, 1993 have to pull ninety percent of the charge when the appliance compressor still operates. Equipment manufactured before that date is held to eighty percent. A 1991 machine falls on the older side of that line, so eighty percent is the target. The alternative of evacuating the appliance to four inches of mercury vacuum remains available either way.
Why This Is the Correct Answer
The manufacture date of the recovery equipment sets the percentage. Anything built before November 15, 1993 is held to the eighty percent level on small appliances, which is the grandfathered standard for machines that predate the certification program. Newer equipment carries the higher ninety percent obligation when the appliance compressor runs.
Why the Other Options Are Wrong
Option A: Ninety percent of the refrigerant in the appliance
Ninety percent is the level required of recovery equipment manufactured on or after November 15, 1993 when the appliance compressor still operates. A 1991 machine predates that requirement.
Option C: Ninety-five percent of the refrigerant in the appliance
Ninety-five percent does not appear anywhere in the small appliance recovery rules. It is a plausible sounding number with no basis in the standard.
Option D: Complete removal down to twenty-five inches of mercury vacuum
Deep vacuums measured in the twenties belong to the Type II and Type III evacuation requirements for larger equipment. Small appliance work uses percentage levels or a shallow four inch vacuum.
Memory Technique
Old machine, old standard: eighty. The machine's birthday matters as much as the appliance's condition.
Reference Hint
40 CFR 82.156(a) and Appendix B small appliance recovery levels; November 15, 1993 is the equipment manufacture cutoff date.
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?
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?
A technician recovers R-134a into a cylinder that still holds recovered R-12 from an earlier job. What is the consequence for that refrigerant?
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