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MasterCool 69100 recovery setup

maineambulance on Thu June 25, 2009 8:19 AM User is offline

Year: 2006
Make: Ford
Model: e350
Engine Size: 6.0L
Refrigerant Type: R134a
Ambient Temp: 75
Pressure Low: 50
Pressure High: 300
Country of Origin: United States

My company recently purchased the MasterCool 69100 complete recovery setup to service our fleet of ambulances. The instructions with it leave a little to be desired. I have recovered r134 from a couple air conditioners and that seemed to work fine - when I went to charge with the recovered r134 my gauge readings were very high as though I were introducing non-condensable gases to the system. It is possible I got air into the recovery tank somehow?

--Doug Knight

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--Doug K

ChevyMan on Thu June 25, 2009 10:14 AM User is offline

I'm not familiar with that system, but the one we used back when I worked at a Chevy dealer needed to have a vacuum drawn on the tank. I would assume they all would. Did you do that?

TRB on Thu June 25, 2009 10:35 AM User is offlineView users profile

Quote
Originally posted by: ChevyMan
I'm not familiar with that system, but the one we used back when I worked at a Chevy dealer needed to have a vacuum drawn on the tank. I would assume they all would. Did you do that?

Agreed, you should always pull a vacuum on a recovery tank. We use the more advanced R & R machines in our shop which hardly ever require us to disconnect the tanks. If you are swapping hoses and such I would pull a quick vacuum each time on the tank just to eliminate any chance of air/moisture being introduced into the system.

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