R 410A UPDATED ACTUAL QUESTIONS AND CORRECT ANSWERS COMPLETE STUDY GUIDE

R 410A UPDATED ACTUAL QUESTIONS
AND CORRECT ANSWERS COMPLETE
STUDY GUIDE

●● 0.3
Answer: The temperature glide for R-410a is less than _____ degrees
Fahrenheit over air conditioning and refrigeration operating ranges.


●● -Can be irritating to the skin
-Is hydroscopic
-Has improved heat transfer characteristics over mineral oils
Answer: Polyol Ester (POE):


●● 50 psig
Answer: The low pressure control on R-410a systems will open at:


●● Absolute discharge pressure divided by absolute suction pressure
Answer: Compression ratio is calculated as:


●● 40% to 70% higher
Answer: Both suction and discharge pressure of R-410a systems are
_____ than R-22 systems.

, ●● Lower
Answer: Because of its higher vapor capacity, the discharge temperature
of R-410a is _____ than R-22.


●● 610 psig plus or minus 10psig
Answer: R-410a systems use a high pressure switch that will open at
approximately:


●● lose or gain
Answer: Subcooled liquid in the receiver may _____ subcooling,
depending on surrounding conditions.


●● 800 psig
Answer: When installing a liquid line filter drier on a R-410a system, be
certain that it has a pressure rating of at least:


●● Smaller than that of a R-22 Metering device
Answer: The flow area of a R-410a metering device is:


●● It may separate (fractionate) into its component refrigerants
Answer: Which of the following statements is true of R-407c