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You are called in to service a R-410A unit which is low on charge. You know that it has been topped off before?
What is the question?
What methods besides weighing and measuring are use for charging systems?
subcooling methods
Which freon will leak from a smaller hole R-22 or R-410A?
The R-22 (chlorodifluoromethane), will leak from a smaller hole than R-410A will. Sort of. Now that we've answered the question, it's time to state that R-410A is an azeotropic mixture of difluoromethane and pentafluoroethane. And the difluoromethane component of the mixture is a smaller molecule than chlorodifluoromethane, which is what R-22 is. But the pentafluoroethane is a larger molecule than the chlorodifluoromethane (R-22). If molecular size is the sole determinate as to which "stuff" can get out, part of the R-410A can get out a smaller hole than the R-22, but all of the R-22 can get out through the "right sized hole" because it is smaller than a constituent of the R-410A. It's your call. Links are provided.
What kind of Freon does a home air conditioner use?
Most home systems use R-22 refrigerant. R-410a, known as PURON, is also an increasingly used refrigerant. If you see a pink sticker on the outdoor unit, it will say on the tag with the model and serial numbers r22 or 410a. "Freon" is a trademark of DuPont, and is NOT the real name of refrigerant. "Freon" was R12 and is no longer made.
What is the purpose for subcooling the liquid refrigerant before it leaves the condenser?
So the refrigerant won't go into sensible heat and reject the process because no vapor is left to condense. This causes the liquid to drop below the wondering saturation temperature of 125°.
You are called in to service a R-410A unit which is low on charge. You know that it has been topped off before?
What is the question?
You are called in to service a R-410A unit which is low on charge. You know that it has been topped off before.?
What is the question?
What is the 410a operating pressure?
The 410a operating pressure is 7.037 Barg or 102.036 psig.
Can you recover r-410a freon?
If you add 410A to a heat pump does it put out more heat or less?
The minimum safety-relief pressure for a R-410A cylinder is .?
minimum pressure is 525 psig for R-410A
The minimum safety-relief pressure for a R-410A cylinder is?
minimum pressure is 525 psig for R-410A
What replaced Freon?
R-410a
Do you have to braze 410a?
Yes, its a requirement of all manufacturers, that i know of, to braze 410a connections with a brazing alloy containing a minimum of 15%
How do you check for super heat and subcooling?
tell me what is mean by super heat
What methods besides weighing and measuring are use for charging systems?
subcooling methods
To change the compressor on a system containing R-410A you must isolate the compressor then?
To change the compressor on a system containing R-410A you must isolate the compressor then?
Can you change r-22 to r-410a?
yes
