Refrigeration and Air Conditioning Quiz

What is a factor to consider prior to the retrofit or conversion of RAC systems?

• Type of flooring

• Refrigerant oil type

• System color

• Number of windows

What is the effect of retrofit refrigerants on system capacity?

• Increase in capacity

• Decrease in capacity

• No effect on capacity

• Increase in weight

What type of oil do new refrigerants operate with?

• Synthetic oil

• Polyolester (POE) oil

• Mineral oil

• Vegetable oil

What is a good practice when retrofitting a system?

• Reuse all existing components

• Replace filter drier

• Keep the same refrigerant oil

• Ignore gaskets and seals

What refrigerant is the split system refrigerant of choice for air conditioning?

• R-22

• R-507

• R-404A

• R-410A

What is a hazard to consider when retrofitting or converting RAC systems?

• Type of flooring

• Global warming potential (GWP)

• Number of windows

• System color

How should new refrigerants be added during system charging to prevent separation?

• As a plasma

• As a gas

• As a solid

• As a liquid

What should be done with the recovered refrigerant from a retrofitted or converted system?

• Store in the garage

• Pour down the drain

• Send to a recycle or reclaim station

• Dispose in regular trash

What is the purpose of a compressor sight glass?

• To monitor energy consumption

• To check the color of the refrigerant

• To indicate oil level in the compressor

• To measure room temperature

What is the first concern in operating a retrofitted or converted HVAC/R system?

• Checking the weather forecast

• Effective preparation

• Ignoring safety procedures

• Disposing of all components