Date:         Tue, 18 Jul 2000 18:47:07 -0700
Reply-To:     Bill Davidson <wdavidson@thegrid.net>
Sender:       Vanagon Mailing List <vanagon@gerry.vanagon.com>
From:         Bill Davidson <wdavidson@thegrid.net>
Subject:      Re: Fridge problems at altitude
Comments: To: Stuart MacMillan <macmillan@home.com>
Content-Type: text/plain; charset="iso-8859-1"

> Ken, I was up at Canjilon Lake park in New Mexico last May at 9900 feet >
with no problems at all with the fridge.  > Have you checked that you have
the required 11" of pressure out of the
> regulator?

Stuart,

Actually, I have it from a very good Dometic Service center that Dometic
Service Bulletin recommends turning the pressure regulator down to as low as
5 w.c. inches for altitudes over 8,000 feet.

I could not keep mine light until I turned it down to 10 w.c. inches... I
live at 6300 feet.

It may be that there are different size jets for different years of
production of the Dometic Fridge.... or there may be variation in the oxygen
tubing.... Other than this, the only reason I can think of as to why your
fridge works so well over 9,000 feet is perhaps your propane pressure is
turned down an you don't know it? .... have you checked yours lately???

In any case, it seems that the fridge's are more likely to work better on
less than 11 w.c. inches at high altitudes/not more.... there is less air
for combustion at altitude and turning the pressure down gets the gas/air
mixture more in the direction of what it would be at lower elevations.

Bill