Technicians who perform sealed system service on small appliances must have; - Answers Type I or
Universal certification.
A small appliance is defined by EPA as; - Answers Appliances manufactured, charged, and hermetically
sealed in a factory with 5 Lbs or less of refrigerant
Type I Certification is required for; - Answers persons handling refrigerant during maintenance, service,
or repair of small appliances
If regulations change after the technician becomes certified; - Answers The technician is responsibility
for complying with any future changes in the regulations.
Recovery equipment manufactured after November 15, 1993 must be; - Answers capable of recovering
90% of the refrigerant in the compressor os operating; 80% of refrigerant if its not or 4 inches of vaccum
Which of the following is true of small appliances refrigerant leaks; - Answers EPA does not require
repair, but leaks should be repaired whenever possible.
Recovery equipment manufactured after November 15, 1993 must be capable of recovering; - Answers
90% refrigerant or or achieving 4 inches of vacuum.
Recovering multiple types of refrigerants in the same cylinder; - Answers will make the reclaimed
refrigerants non reclaimable and a charge for disposal may be levied.
Self-contained or active recovery equipment; - Answers Has its own means of recovery.
System-dependant or passive recovery equipment; - Answers Captures refrigerant into a non-
pressurized container with assistance of the appliance compressor.
What is defined as a non-condensible? - Answers Air
When using a system-dependent recovery system on an appliance that has an operating compressor,
the technician should; - Answers Run the compressor and recover from the high side of the system.
When using a system-dependent recovery system on an appliance that has a non-operating compressor,
the technician should; - Answers Place access fitting on both the low and high side of the system.
System-dependant devices may only be used on appliances containing; - Answers 15 pounds of
refrigerant or less.
Small appliances are equipped with a straight piece of tubing (process stub) used to; - Answers install a
piercing type access valve fitting.
If a strong odor is detected while performing the recovery process, - Answers A compressor burnout has
likely occurred.
, After the refrigerant has been recovered, which of the following can be used to flush the system? -
Answers Nitrogen
When filling a charging cylinder with a regulated refrigerant; - Answers The refrigerant vapor that is
vented off the top of the cylinder must be recovered.
If after installing a fitting for the purpose of recovering the appliances refrigerant, you find that the
system pressure is 0 psig; - Answers Recovery is not required.
Applying heat with a heat gun to the compressor; - Answers can help vaporize any trapped liquid
refrigerant during recovery.
Refrigerators in the 1950's and earlier may have used what refrigerants (recovery is not required)? -
Answers Methyl Formate, Methyl Chloride, or Sulfur Dioxide.
Small appliances in recreational vehicles may use refrigerants such as Ammonia, Hydrogen, or water,
and therefore; - Answers The refrigerant should not be recovered.
Recovery equipment manufactured before November 15, 1993 must be capable of recovering. -
Answers 80 percent of the refrigerant or achieving 4 inches of vacuum.
When pressurizing a system with nitrogen you should; - Answers charge through a pressure
regulator;place a relief valve in the downstream line from the pressure regulator.
After recovering refrigerant, the Nitrogen used to flush the system may be: - Answers legally vented.
The sale of CFCs and HCFC's are - Answers restricted to certified technicians
ARI 740 sets - Answers recovery requirements
All equipment must be equipped with - Answers low loss fittings
Low loss fittings should be able to - Answers close manually or automatically when hoses are
disconnected to minimize refidgerant loss
Before beginning a refrigerant recovery procedure, it is necessary - Answers to know the type of
refrigerant that is in the system.
self contained (active) recovery equipment stores itself in a - Answers pressurized recovery tank
Before opening a self contained recovery machine make sure the - Answers inlet valve is open, and tank
does not contain excessive air (non condensables)
The only way to read refrigerant pressure correctly is at - Answers a stable known temperature
Air in refrigeration systems will cause - Answers higher discharge pressures