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Re: [GMCnet] yet another dash AC question [message #274477 is a reply to message #274460] Fri, 27 March 2015 23:02 Go to previous messageGo to previous message
powwerjon is currently offline  powwerjon   United States
Messages: 849
Registered: March 2013
Karma:
Senior Member
Karen,
No where in an of your post have I heard that you have replaced the refrigerate oil in your system and if you did what kind did you used. If you have a clean system or a system that has only seen R12 then you should be using a mineral oil. You DO NOT want to mix any PAG or mineral oil together as it will clog up your system. I would suggest only using the paraffin free mineral oil with the Duracool type coolants. If you are using the A6 compressor then the compressor requires 10 1/2 ounces of oil, the Evap 1 ounce, condenser 1 ounce, Rec/dryer 1 ounce. If you have replaced any of these item and not replaced the oil then you do not have enough oil in the system.

http://www.napaonline.com/Catalog/CatalogItemDetail.aspx/R12-Mineral-Oil/_/R-TEM209500_0394045110

The pressure switch will work just fine with duracool.


J.R. Wright
30' Buskirk Stretch
Michigan
On Location in Tucson

> On Mar 27, 2015, at 5:03 PM, Chris Tyler wrote:
>
> I wonder if the pressure switch is too low for the operating PSI
> --
> 76 Glenbrook
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