Recovery
Appliances
gits and shiggles
Da Rules
Neek-tro-jen
100
Recovery equipment used for the service or repair of small appliances must be certified by an EPA approved lab if the recovery equipment was made after
November 15, 1993
100
EPA's definition of a small appliance includes:
a device manufactured, charges & hermetically sealed in factory with a charge of 5lbs or less
100
The EPA section 608 certification must be renewed every
never
100
If regulations change after the technician becomes certified;
The technician is responsibility for complying with any future changes in the regulations.
100
After recovering refrigerant, the Nitrogen used to flush the system may be:
legally vented
200
Recovery devices made before 11-15-93 and are used for recovery of refrigerant from small appliances must be capable of
recovering 80% of the refrigerant whether or not the compressor is operating or achieving a 4 inch vacuum under conditions of ARI 740-1993
200
Tech's with a type 1 small appliance certification are certified to recover refrigerant during the maintenance or repair of:
PTAC's with 5lbs or less of refrigerant
200
Technicians who perform sealed system service on small appliances must have;
Type 1 or universal
200
Which of the following is true of small appliances refrigerant leaks;
EPA does not require repair, but leaks should be repaired whenever possible.
200
When pressurizing a system with nitrogen you should;
charge through a pressure regulator.
place a relief valve in the downstream line from the pressure regulator.
300
It is an EPS regulation that any person who opens and appliance for maintenance, service or repair must have at least one self-contained recovery machine available at their place of business. The only exception to this rule are persons working on
small appliances
300
EPA requires that all small appliances be equipped with a service aperture or other device that is used when adding or removing refrigerant from the appliance. For small appliances this service port typically
a straight piece of tubing, called a process tube that is entered using a piercing valve
300
Applying heat with a heat gun to the compressor
can help vaporize any trapped liquid refrigerant during recovery.
300
Recovery equipment manufactured after November 15, 1993 must be capable of recovering;
90% refrigerant or or achieving 4 inches of vacuum.
300
Gauges set hoses used for field service work should have self-sealing connectors or hand valves in order to:
Minimize refrigerant release when hoses are connected and disconnected
400
The sale ODP CFC & HCFC refrigerants is:
restricted to techs who are EPA certified in refrigerant recovery
400
Small appliances in recreational vehicles may use refrigerants such as Ammonia, Hydrogen, or water, and therefore;
The refrigerant should not be recovered.
400
Self-contained or active recovery equipment;
Has its own means of recovery
400
Recovering multiple types of refrigerants in the same cylinder;
will make the reclaimed refrigerants non reclaimable and a charge for disposal may be levied.
400
Recycling or recovery equipment using hermetic compressors has the potential to overheat when drawing deep vacuum because:
The motor relies on the flow of refrigerant through the compressor for cooling
500
Refrigerators in the 1950's and earlier may have used what refrigerants (recovery is not required)?
Methyl Formate, Methyl Chloride, or Sulfur Dioxide.
500
If after installing a fitting for the purpose of recovering the appliances refrigerant, you find that the system pressure is 0 psig;
Recovery is not required.
500
When recovering refrigerant into a non-pressurized container from a refrigerator with an inoperative compressor:
it is necessary to heat the compressor and strike it with a rubber mallet
500
When filling a graduated charging cylinder, refrigerant that is vented off the top of the cylinder:
must be recovered
500
You can save time recovering the refrigerant from a system by removing as much as possible in the _______ phase?
liquid