Date: Sat, 30 Jul 2005 08:00:20 -0400
From: Malt_Hound <Malt_Houndnospamm*yahoo.com>
Subject: Re: 1992 saab 900s conv 2.1 ac problem


David Taylor wrote: >>I think it might have been a pump until it is refilled. But once in awhile > > > Thing is, there's no such thing as a "top-up" as the only way of topping > up would require knowledge of the quantity of what's in there in the > first place! Quantity of refrigerant is generally ascertained by measuring the low side pressure when the compressor is operating. -Fred W

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