EPA 609 Refrigerant Types & Properties 2

Question 1

What class of refrigerant is R-1234yf?

Accepted Answer

HFO (Hydrofluoroolefin)

Answer

CFC

Answer

HFC

Answer

HCFC

Question 2

Which property makes R-1234yf require additional safety precautions compared to R-134a?

Accepted Answer

It is mildly flammable (A2L classification)

Answer

It is highly toxic

Answer

It operates at much higher pressures

Answer

It reacts violently with water

Question 3

What type of oil is used with R-134a systems?

Accepted Answer

PAG (Polyalkylene Glycol) oil

Answer

Mineral oil

Answer

Alkylbenzene oil

Answer

POE (Polyol Ester) oil

Question 4

What type of oil was used in R-12 MVAC systems?

Accepted Answer

Mineral oil

Answer

PAG oil

Answer

POE oil

Answer

Synthetic compressor oil

Question 5

Refrigerant cylinders are color-coded to identify the refrigerant inside. What color identifies R-134a cylinders?

Accepted Answer

Sky Blue (light blue)

Answer

White

Answer

Green

Answer

Yellow

Question 6

What color are R-12 refrigerant cylinders?

Accepted Answer

White

Answer

Sky blue

Answer

Yellow

Answer

Red