| a/c pressures [message #303250] |
Thu, 07 July 2016 20:10  |
Dan Gibb
Messages: 24
Registered: May 2015
Location: Tucson, Arizona
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Junior Member |
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this is the 3rd time I have tried to post this.......if any others show up I'm sorry.
I replaced the 134a in my A/C system with a Dura Cool clone called EnviroSafe. The 134a was working fine, but I was concerned with the high head pressures on our old systems. With the 134a I had a low side of 35lbs and a vent temp of 50 . My ambient temp is 105deg.
I put in 3 of the 6oz cans of the clone as per the instructions on http://gmcmotorhome.info/list.html#RAD, scroll up to Dura cool conversion. My low side went to 55lbs and temp to 71. I let out enough to bring pressure to 35 and the temp went to 60 , I let out more to 30 and the temp went to 66. I think the system was empty when I put it in, any way the gauge said 0.
Anyone know what the best pressures are to use? What am I doing wrong? I really don't want to take it all out and start over.....
Dan Gibb
1977 Eleganza II
Tucson, Az
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