WorksheetsUnderstanding Refrigerants and Regulations
Total questions: 10
Worksheet time: 5mins
What is a zeotropic refrigerant mixture?
A mixture of components with the same boiling point.
A mixture of components with different boiling points.
A single-component refrigerant.
A refrigerant that does not experience temperature glide.
What is the proper charging method for R-400 series blended refrigerants?
Charge as a gas into the low side of the system.
Weigh the refrigerant into the high side of the system as a liquid.
Charge as a liquid into the low side of the system.
Charge as a gas into the high side of the system.
Which refrigerant is known for having a high-temperature glide and may easily experience fractionation?
R-22
R-134a
R-407C
R-410A
What type of oil is most commonly used when retrofitting HCFC equipment to HFC refrigerants?
Mineral oil
Alkylbenzene oil
Polyolester oil
PAG oil
Which of the following refrigerants is classified as a very high-pressure refrigerant at 104°F?
HFC-134a
HCFC-22
CO2 (R-744)
HFC-410A
What is the purpose of the EPA's Significant New Alternatives Policy (SNAP) Program?
To phase out all refrigerants by 2030.
To identify refrigerants with lower overall risks to human health and the environment.
To approve direct drop-in replacements for R-22.
To regulate the sale of all refrigerants.
What must be done before retrofitting an HCFC system to use HFC refrigerant?
Mix ester-based oil with existing oil.
Remove other types of oils before adding ester-based oil.
Add more HCFC refrigerant.
Replace all copper tubing.
Which refrigerant is exempt from the venting prohibition under EPA regulations?
R-22
HFC-134a
Ammonia
R-410A
What is the penalty for knowingly releasing non-exempt refrigerant from appliances as of 2017?
$10,000 per day, per violation
$20,000 per day, per violation
$44,539 per day, per violation
$50,000 per day, per violation
What must be done with disposable cylinders of CFCs, HCFCs, HFCs, or HFOs before discarding?
Leave them as is.
Recover all remaining refrigerant and recycle the metal.
Fill them with water.
Store them indefinitely.
