Question about Coleman Mach III Air Conditioner
TEMPERATURE OF AIR IS LESS COMING OUT OF UNIT and Takes longer to cool down ... air condition guy sez it is a sealed unit and cannot be recharged??? ... ALL NEW FILTERS ETC ETC..
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Posted on Jan 02, 2017
SOURCE: Recharge My AC Unit
The system needs to be accessed through what is call a tap valve. After a tap valve is in place a high vacuum should be pulled on the system down to 500 microns to remove air and non condensible gases along with any moisture from the system. Then the charge should be weight into the system according to the name plate with the proper type of refrigerant, generally Refrigerant 22. An alternate method is to charge the system by superheat of the gas returning to the compressor. Ambient temperature determines how high or low the superheat should be.
Posted on Jun 20, 2008
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