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| Re: [GMCnet] How to recharge Air conditioning unit? [message #280793 is a reply to message #280786] |
Fri, 26 June 2015 15:00   |
tphipps
Messages: 3005
Registered: August 2004
Location: Spanish Fort, AL
Karma: 9
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Senior Member |
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Roof top units are a sealed system and do not have ports to allow recharging. Ports have been added to lines to perform a recharge, but reports are that the tap in charging ports are a failure point. Worth a try, but may be a stop gap measure.
Tom, MS II
2012 Phoenix Cruiser model 2552
KA4CSG
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| Re: [GMCnet] How to recharge Air conditioning unit? [message #280798 is a reply to message #280786] |
Fri, 26 June 2015 15:26 |
jhbridges
Messages: 8412
Registered: May 2011
Location: Braselton ga
Karma: -74
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If you're handy with an acetylene torch, you can cut the lines and braze in a pair of tees with Schrader valves on them. Available in different pipe diameters from your A/C supply house. We had a lot of Bard wallmounts, and the maintenance guys often brazed in a valve for various reasons - fan cycle, low pressure shutoff on the ones with out heaters, etc. Set of Schraders and a set of gauges, fat city.
--johnny
Foolish Carriage, 76 26' Eleganza(?) with beaucoup mods and add - ons.
Braselton, Ga.
I forgive them all, save those who hurt the dogs. They must answer to me in hell
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| Re: [GMCnet] How to recharge Air conditioning unit? [message #280803 is a reply to message #280798] |
Fri, 26 June 2015 17:43 |
Chris Tyler
Messages: 458
Registered: September 2013
Location: Odessa FL
Karma: 7
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Johnny Bridges wrote on Fri, 26 June 2015 15:26If you're handy with an acetylene torch, you can cut the lines and braze in a pair of tees with Schrader valves on them. Available in different pipe diameters from your A/C supply house. We had a lot of Bard wallmounts, and the maintenance guys often brazed in a valve for various reasons - fan cycle, low pressure shutoff on the ones with out heaters, etc. Set of Schraders and a set of gauges, fat city.
--johnny
Yep. Taps are easy but will always leak. SilPhos [siver solder type] rather than copper braze. You will also need a vac pump.
Oh, and be careful with the capacitors. They bite, and falling off the roof is not recommended.
76 Glenbrook
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