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[Show more]What date was the sale of CFC's & HCFC's restricted to technicians certified in refrigerant recovery? ans November 14, 1994 
 
Section 608 of the Federal Clean Air Act requires technicians to what? ans Recover all refrigerants. 
 
The objective of the Clean Air Act is to protect what? ...
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Add to cartWhat date was the sale of CFC's & HCFC's restricted to technicians certified in refrigerant recovery? ans November 14, 1994 
 
Section 608 of the Federal Clean Air Act requires technicians to what? ans Recover all refrigerants. 
 
The objective of the Clean Air Act is to protect what? ...
Which Refrigerants contain the most chlorine? ans CFC's 
 
As of what date did it become unlawful to intentionally release Class 1 and Class 2 refrigerants to the atmosphere? ans July 1, 1992 
 
Which Refrigerants have the lowest zone depletion potential? ans HFC's 
 
The molecul...
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Add to cartWhich Refrigerants contain the most chlorine? ans CFC's 
 
As of what date did it become unlawful to intentionally release Class 1 and Class 2 refrigerants to the atmosphere? ans July 1, 1992 
 
Which Refrigerants have the lowest zone depletion potential? ans HFC's 
 
The molecul...
a vacum pump should be connected ans as far away from the pump as possible 
 
a high capacity vacuum pump and short, large diameter hoses will ans dramatically reduce emissions, pressure drop, and evacuation/dehydration time 
 
ozone contains three ans oxygen atoms 
 
one chlorine ...
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Add to carta vacum pump should be connected ans as far away from the pump as possible 
 
a high capacity vacuum pump and short, large diameter hoses will ans dramatically reduce emissions, pressure drop, and evacuation/dehydration time 
 
ozone contains three ans oxygen atoms 
 
one chlorine ...
Which refrigerants contain the most chlorine? ans CFC. 
R11,R12,R500. 
 
As of what date did it become unlawful to intentionally release Class I and Class II refrigerants to the atmosphere? ans July 1 1992. 
 
Which refrigerants have the lowest ozone depletion potential (ODP)? ans ...
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Add to cartWhich refrigerants contain the most chlorine? ans CFC. 
R11,R12,R500. 
 
As of what date did it become unlawful to intentionally release Class I and Class II refrigerants to the atmosphere? ans July 1 1992. 
 
Which refrigerants have the lowest ozone depletion potential (ODP)? ans ...
What are the typical uses of the center port of gauge set? ans Used during evacuation, charging and recovery procedures. 
 
What color are the gauges on a manifold gauge set? ans Low pressure is blue, High pressure is red. 
 
What are the typical ranges of pressure measurements used on t...
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Add to cartWhat are the typical uses of the center port of gauge set? ans Used during evacuation, charging and recovery procedures. 
 
What color are the gauges on a manifold gauge set? ans Low pressure is blue, High pressure is red. 
 
What are the typical ranges of pressure measurements used on t...
Are there drop-in replacements for R-12 systems? Why or why not? ans No because the new refrigerants are incompatible with the oils and lubricants used in R-12 systems. 
 
What type of oil is used in R-134a and what oils will it mix with? ans Ester based oils and they do not mix with oth...
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Add to cartAre there drop-in replacements for R-12 systems? Why or why not? ans No because the new refrigerants are incompatible with the oils and lubricants used in R-12 systems. 
 
What type of oil is used in R-134a and what oils will it mix with? ans Ester based oils and they do not mix with oth...
Recovery equipemnt used for the service or repair of small appliances must be certified by an EPA approved lab if the recovery equipment was made after ans November 15, 1993 
 
Recovery devices made before 11-15-93 and are used for recovery of refrigerant from small appliances must be capable ...
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Add to cartRecovery equipemnt used for the service or repair of small appliances must be certified by an EPA approved lab if the recovery equipment was made after ans November 15, 1993 
 
Recovery devices made before 11-15-93 and are used for recovery of refrigerant from small appliances must be capable ...
Refrigeration technicians who violate the Clean Air Act can: - ans Lose their EPA certification, be fined, be required to appear in Federal court. 
 
After 1995, any supplies of CFC refrigerants to service existing units in the USA can only come from: - ans recovery and recycling. 
 
Ref...
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Add to cartRefrigeration technicians who violate the Clean Air Act can: - ans Lose their EPA certification, be fined, be required to appear in Federal court. 
 
After 1995, any supplies of CFC refrigerants to service existing units in the USA can only come from: - ans recovery and recycling. 
 
Ref...
Heat pumps that have been retrofitted from R22 to R407C should be leak checked with: ans pressurized nitrogen 
 
When a new system has been assembled, the first thing to do is: ans pressurize the system with inert gas and leak check 
 
EPA regulations require that leaking commercial or i...
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Add to cartHeat pumps that have been retrofitted from R22 to R407C should be leak checked with: ans pressurized nitrogen 
 
When a new system has been assembled, the first thing to do is: ans pressurize the system with inert gas and leak check 
 
EPA regulations require that leaking commercial or i...
1x sold
When a new system has been assembled, the first thing to do is? ans Pressurize the system with an inert gas & leak check. 
 
After installation of a field-piped R-410A split heat pulp, the unit should first be? ans Pressurized with nitrogen then leak checked. 
 
The EPA regulations requi...
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Add to cartWhen a new system has been assembled, the first thing to do is? ans Pressurize the system with an inert gas & leak check. 
 
After installation of a field-piped R-410A split heat pulp, the unit should first be? ans Pressurized with nitrogen then leak checked. 
 
The EPA regulations requi...
When moisture exists in an operating system, what is most likely to occur? ans Acid will form. 
 
What factor(s) affects the speed of evacuation? ans 1) The size of the equipment being evacuated. 
 
2)The ambient temperature. 
 
3) The amount of moisture in the system 
 
A system is cons...
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Add to cartWhen moisture exists in an operating system, what is most likely to occur? ans Acid will form. 
 
What factor(s) affects the speed of evacuation? ans 1) The size of the equipment being evacuated. 
 
2)The ambient temperature. 
 
3) The amount of moisture in the system 
 
A system is cons...
1x sold
On low pressure chillers, moisture typically enters the refrigerant system through ans air leaks from areas with gaskets or fittings 
 
The maximum test pressure for leak testing a low pressure centrifugal is: ans 10 psig 
 
Leak test and repair the chiller to reduce refrigerant loss fro...
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Add to cartOn low pressure chillers, moisture typically enters the refrigerant system through ans air leaks from areas with gaskets or fittings 
 
The maximum test pressure for leak testing a low pressure centrifugal is: ans 10 psig 
 
Leak test and repair the chiller to reduce refrigerant loss fro...
The sale of reclaimed CFC, HCFC, HFC, and HFO refrigerants is_______. ans Restricted to technicians who are EPA certified and refrigerant recovery 
 
A small Pliance is defined as a system that is ans Manufactured, fully charged, and hermetically sealed in a factory with a charge of 5 po...
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Add to cartThe sale of reclaimed CFC, HCFC, HFC, and HFO refrigerants is_______. ans Restricted to technicians who are EPA certified and refrigerant recovery 
 
A small Pliance is defined as a system that is ans Manufactured, fully charged, and hermetically sealed in a factory with a charge of 5 po...
What does ozone in the stratosphere above the earth consist of? ans Molecules containing 3 oxygen atoms 
 
Which of the following refrigerants has the lowest global warming potential? ans R-600a 
 
Which of the following gases is used as the baseline measurement for global warming potent...
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Add to cartWhat does ozone in the stratosphere above the earth consist of? ans Molecules containing 3 oxygen atoms 
 
Which of the following refrigerants has the lowest global warming potential? ans R-600a 
 
Which of the following gases is used as the baseline measurement for global warming potent...
What type of equipment can be worked on with Type III certification? ans low pressure 
 
The most efficient method of leak checking a charged low-pressure refrigeration unit is to ans pressurize the system by the use of controlled hot water or heater blankets 
 
When pressurizing a syste...
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Add to cartWhat type of equipment can be worked on with Type III certification? ans low pressure 
 
The most efficient method of leak checking a charged low-pressure refrigeration unit is to ans pressurize the system by the use of controlled hot water or heater blankets 
 
When pressurizing a syste...
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