R-410A CERTIFICATION EXAM |COMPLETE QUESTIONS AND
CORRECT ANSWERS (VERIFIED ANSWERS ) A GRADE.
All service equipment used on R- 410A systems, must be capable of
doing what? - ANSWER-The equipment must be rated for higher
pressures
At what pressure does the High Pressure Switch open on an R- 410A?
- ANSWER-610 psig, plus or minus 10 psig
At what pressure does the Low Pressure Switch open on an R- 410A?
- ANSWER-50 psig
At what pressure does the Service Hoses have to be rated for, on an
R- 410A System? - ANSWER-800 psig
At what pressure on a R-410A Manifold Gauge does the High Side
pressure go to? - ANSWER-800 psig
At what pressure on a R-410A Manifold Gauge does the Low Side
pressure go to? - ANSWER-250 psig with a 550 psig retard
Bubbles in a sight glass of R-410A, means the system is low on
refrigerant...True or False? - ANSWER-False!!!
, The closer a blend comes to being a true Azeotropic, what can be said
of the Temperature Glide? - ANSWER-The glide in temperature will
decrease
The cylinder color code for R-410A is...? - ANSWER-Rose
Due to it's higher Vapor heat Capacity, what can be said of the
Discharge Temperature of R-410A when compared to R-22? -
ANSWER-Discharge temperature are lower.
The Evaporator Coil used with R- 410A Systems, needs to meet what
requirements? - ANSWER-UL approved design.........Service pressure
rating of 235 psig
The flow area of a R-410A Metering Device is what in relationship to a
R-22 Metering Device? - ANSWER-About 15% smaller
A full Nitrogen Cylinder has a pressure of...? - ANSWER-2500 psig
HCFC-22 is scheduled for total phase out, by the year? - ANSWER-
2020
How is compression ratio calculated? - ANSWER-Absolute Discharge
Pressure divided by Absolute Suction Pressure
How is Refrigerant charged into an operating R-410A system? -
ANSWER-It has to be charged into the system as a blended
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