Core
Type I
Type II
Type III
TRUE OR FALSE
100
The refrigerant with the highest ODP is_________.
What is : CFC
100
Systems manufactured, charged and hermetically sealed with five pounds or less of refrigerant is Type.........?
What is : Type I "Small Appliance".
100
Out of the following refrigerants, which can be mixed (R-12 & R-134a) (R-22 & R-502) (R-12 & R-11)
What is : None !!
100
A system that fails to hold a vacuum after the evacuation process may have, A) A leak, or B) may contain moisture.
What is : Both A & B.
100
TRUE OR FALSE :In a Heat Pump Air condition System, the Reverse Acting Valve is controlled by Green color wire .
What is : FALSE
200
How many chlorine atoms does it take to destroy 100,000 ozone molecules in the stratosphere ?
What is : 1 atom
200
Small appliances recovery equipment manufactured after ( date ? ) must be certified by an EPA approved organization.
What is : November 14, 1993.
200
CFC & HCFC refrigerants cause suffocation because....
What is : Heavier than air and displace oxygen.
200
The state and condition of the refrigerant entering the condenser is : A) Sub-cooled liquid, B) Superheated vapor C) Superheated liquid
What is :A) Superheated vapor
200
TRUE OR FALSE :THE CONDENSING PRESSURE IS THE PRESSURE AT WHICH STATE CHANGES FROM LIQUID TO VAPOR.
What is : FALSE
300
Stratospheric ozone consists of___________________.
What is : Three oxygen atoms.
300
The sale of Class I and II refrigerants is restricted to technicians certified by an EPA approved program after_______________.
What is : November 14, 1994
300
A nitrogen tank should always be equipped with.......
What is : Pressure Regulator
300
Containers of HFC-134A are colored....
What is : Light Blue
300
TRUE OR FALSE : THE SCROLL COMPRESSOR NOT ONLY IS MORE EFFICIENT BUT OPERATES MUCH BETTER WITH THE HIGH PRESSURES OF 410A.
What is : TRUE
400
As of ______________ it became unlawful to release class I and class II refrigerants into the atmosphere.
What is : July 1, 1992
400
Recovery units manufactured after___Date?__ must be capable of recovering 80% when the compressor is not operating and 90% when the compressor is operating.
What is : Nov. 15, 1993
400
Nitrogen used for brazing purpose, holding charge, or leak testing may be.....A) Vented to the Atmosphere or, B) Must be Recovered.
What is : A) May be vented to the atmosphere.
400
CFC`s has not been manufactured in the USA since......
What is : 1995
400
TRUE OR FALSE : SATURATION IS USUALLY DEFINED AS TEMPERATURE AT WHICH A FLUID CHANGES TO A VAPOR OR A VAPOR TO A FLUID.
What is : TRUE
500
The synthetic lubricant used with HCFC based ternary blends is___________________.
What is : Alkyl-benzene
500
Before disposing of a small appliance containing CFC-12, it is necessary to _____________.
What is : recover the refrigerant.
500
Excessive superheat at the evaporator outlet of an A/C system could be an indication of.. A) Low Refrigerant charge?, or B) High head pressure?
What is : A) Low Refrigerant charge
500
The Law States that leaks in small appliances ; A) Must be repaired. B) Be repaired if the system contains more than five pounds of refrigerant. C) Does not have to be repaired, but it is good practice to repair whenever possible.
What is : C )
500
TRUE OR FALSE : SUBCOOLING ALWAYS REFERS TO A LIQUID AT A TEMPERATURE BELOW ITS SATURATION TEMPERATURE FOR A GIVEN PRESSURE.
What is : TRUE
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