608 CORE

Front

How many different refrigerants can be recovered into the same cylinders?

Back

Only one

Front

Which type of refrigerant is the most harmful to the stratospheric ozone? Options: HFC's, HCFCs, CFC's, HFOs

Back

CFC's

Front

After Phase out of a refrigerant. Where will supplies of that refrigerant for servicing equipment come from?

Back

Recovery and reclaimed gas

Front

What can easter oils be mixed with?

Back

No other oils

Front

Why are some hydrofluorolefins (HFO) refrigerants classified as “A2L”?

Back

They are less flammable than Hydrocarbon refrigerants, but most are still mildly flammable.

Front

As of 2017, how much can a technician be fined for violating the clean air act, including knowingly releasing non-exempt refrigerant from an appliance?

Back

$44,539 per day per violation

Front

Which of the following statements is true?
Options:

1. There is no difference between refrigerant grade hydrocarbons and propane for grills
2. Propane for grills contain impurities that can damage refrigeration equipment
3. Refrigerant- grade hydrocarbon refrigerant is of lower grade than consumer propane cylinders
4. Hydrocarbon refrigerant can be used as a retrofit refrigerant

Back

Propane for grills contain impurities that can damage refrigeration equipment

Front

What is the term used to describe the fact that a refrigerant blend has a range of bubble points at a constant pressure?

Back

Temperature glide

Front

Ozone depletion in the stratosphere is what type of problem?

Back

Global

Front

Which of the following refrigerants has the lowest global warming potential (GWP)?

R-22, R-123, R-410A, R-502

Back

R-123