A cylinder with a gray body and a yellow top is used for ?
What is recovered refrigerant
100
Refrigerant entering the compressor of a refrigeration system is a :
What is a Low pressure, low temperature Vapor
100
Before beginning a refrigerant recovery procedure, it is necessary to know?
What is The type of refrigerant that is in the system
100
The primary water source for cooling the condenser of a water-cooled recovery unit is?
What is local municipal water supply
100
The typical design burst pressure for a rupture disk on a low pressure centrifugal air-conditioning system is set at_______
What is 15 psig
200
CFC refrigerants are so named because they contain the elements ...
What is Chlorine, Fluorine and Carbon
200
Recovery equipment that relies upon the compressor in the system would be considered:
What is System-Dependent
200
What is the process of restoring refrigerant to a "like new" quality?
What is reclamation
200
Moisture is removed from a system by using a?
What is using a filter drier
200
The type of oil that is most commonly used in stationary refrigeration applications with HFC-134a refrigerant is:
What is ester oil
300
How many oxygen molecules make up ozone ?
What is 3
300
R-11 is what type of refrigerant ?
What is a CFC
300
After _____, the servicing of R-22-based systems will rely on recycled refrigerants:
What is 2020
300
in a refrigeration system utilizing a thermal expansion valve, the component directly following the condenser is the ?
What is the reciever
300
The primary purpose of a purge unit on a CFC-11 chiller is to ?
What is remove non-condensables from the system
400
_________ refers to the process of cleaning refrigerant by oil separation and single or multiple passes thru filter dryers, which reduce moisture and acidity
What is recycling
400
Refrigerant will be in _____ phase in suction line:
What is cold Vapor
400
Which refrigerant is most commonly used as a replacement for R-12 in new household refrigerators
What is R-134a
400
Appliances containing CFC refrigerants can be evacuated to atmospheric pressure when ?
What is leaks in the appliance make evacuation to the prescribed level unattainable
400
Who establishes the refrigerant safety group standard ?
What is ASHRAE
500
if an oil is Hygroscopic, it means that it...
What is readily absorbs moisture
500
What chemical compound is formed when chlorine is mixed with ozone ?
What is chlorine monoxide
500
When transporting refrigerants, the DOT regulation number 49 CFR requires____to be recorded on the shipping papers for hazard class 2.2 nonflammable compressed gasses
What is number of cylinders of each type of gas
500
What does ASHRAE stand for ?
What is American Society of Heating, Refrigerating and Air Conditioning Engineers)