TOM D Flashcards
EPA 608
System-dependent or passive recovery equipment;
Captures refrigerant into a non-pressurized container.
When using a system-dependent recovery system on an appliance that has a non-operating compressor, the technician should;
Place access fitting on both the low and high side of the system.
A small appliance is defined by EPA as
Appliances manufactured, charged, and hermetically sealed in a factory that contain 5 lbs or less of refrigerant.
Recovering multiple types of refrigerants in the same cylinder;
will make the reclaimed refrigerants unreclaimable.
System-dependent recovery methods may only be used on appliances containing;
15 pounds of refrigerant or less.
Small appliances are equipped with a straight piece of tubing (process stub) that is used;
As the installation location for a piercing-type access valve.
Which HC refrigerant is allowed for use in NEW Domestic Small Appliances?
R-600a
Small appliances in recreational vehicles may use refrigerants such as Ammonia, Hydrogen, and water. These refrigerants;
Should not be recovered.
With a non-operating system compressor, recovery equipment must be capable of recovering;
80 percent of the refrigerant or achieving 4 inches of vacuum.
Type I Certification is required for;
persons handling refrigerant during maintenance, service, or repair of small appliances.
When filling a charging cylinder with a regulated refrigerant;
The refrigerant vapor that is vented off the top of the cylinder must be recovered.
Self-contained or active recovery equipment;
Has its own means to recover refrigerant.
If a strong odor is detected while performing a refrigerant recovery process,
A compressor burnout has likely occurred.
Recovery equipment must be;
Certified by an EPA-approved testing laboratory.
After the refrigerant has been recovered, which of the following can be used to flush the system?
Nitrogen
Technicians who perform sealed-system service on small appliances must have;
Type I or Universal certification.
When a system is in deep vacuum;
Never energize the compressor.
If, after installing a fitting for the purpose of recovering the appliance’s refrigerant, you find that the system pressure is 0 psig;
Refrigerant recovery is not required.
When using a system-dependent recovery system on an appliance that has an operating compressor, the technician should;
Run the compressor and recover from the high side of the system only.
Applying heat, with a heat gun, to the compressor;
can help vaporize any trapped liquid refrigerant during recovery.
If regulations change after the technician becomes certified;
The technician is responsible for complying with any changes to the regulations.
On a system with an operating compressor, recovery equipment must be capable of recovering;
90% refrigerant or achieving 4 inches of vacuum.
When pressurizing a system with nitrogen you should
charge through a pressure regulator. install a relief valve in the line downstream from the pressure regulator.
Which of the following is true regarding refrigerant leaks on small appliances?
EPA does not require repair, but leaks should be repaired whenever possible.
Which of the following is an example of a non-condensable?
Air
