Which of the following refrigerants causes the least amount of damage to the ozone layer? -
✔✔R-134a
Are there any fluorocarbon refrigerants that cause no harm to stratospheric ozone? - ✔✔Yes, HFC's
Which of the following is not a direct result of ozone depletion? - ✔✔Increased incidence of smog
There are two environmental issues relating to refrigerants; one is ozone-depletion and the other is: -
✔✔The effect on global warming.
Are there any other chemicals, besides refrigerants, that damage the ozone layer? - ✔✔Yes,
the Bromine in a Halon fire extinguisher system is more damaging.
The ODP Certification obtained from another province is accepted in Ontario: - ✔✔When it
is recognized by the Ministry of the Environment
A vehicle may not be refilled with CFCs under any circumstance. However already contained CFCs can
continue to be used in the air-conditioning system if the air conditioning system was installed in a motor
vehicle on or before what date? - ✔✔December31, 1994
When servicing refrigeration or air conditioning equipment on Federal property within Ontario, a service
technician must: - ✔✔FoIIow both Ontario and federal regulations.
, The production, import and export of virgin HCFC refrigerants by Canada is presently legislated to end
by: - ✔✔January 1, 2020
The refill of CFCs or HCFCs for mobile air conditioner is - ✔✔Not allowed
A person who services a refrigeration/air conditioning system that contains or may have contained a
CFC/HCFC/HFC, must conduct the leak testing in accordance with: - ✔✔The Code of Practice for the
Elimination of the Fluorocarbon Emissions from Refrigeration and Air Conditioning Systems.
Ontario Regulation 463/10 applies to refrigerants containing: -
✔✔Hydrofluorocarbons, Chlorofluorocarbons, and Hydrochlorofluorocarbons.
How many refrigerants are recommended to be transported in the same recovery cylinder? -
✔✔One.
To ensure that the vacuum pump performs adequately, the ____________ vacuum must be changed on
a regular basis. - ✔✔Oil
Which of the following chemicals may be added to a refrigeration system for the purpose of pressure
testing? - ✔✔Nitrogen
Every person who owns a cylinder that has contained a refrigerant should: - ✔✔Have the cylinder
tested annually.
At a temperature of 20 C (68,F), a refrigerant container cannot be filled, with liquid, beyond a maximum
of_______________ of the internal volume: - ✔✔80%
Once the liquid refrigerant has been removed from a system, the remaining vapour is to be: -
✔✔Recovered by the recovery equipment.
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