> The Dometic 182 does not use Freon, it is an ammonia based system.  And as
> far as I know it's not rechargeable.

I was going to suggest that RVMobile rebuilds such fridges,
but now I see on their web site that they do not SHIP anymore.
Must be some change in shipping rules.  Anyway, there is a
lot of very good info on Westy-style (amonia-based) fridges
on their site:
http://www.rvmobile.com/Tech/Technical.htm

Richard
Boulder