On Tue, 21 Mar 2006 19:55:57 GMT, "Lloyd E. Sponenburgh"
wrote:

Keep in mind, it's not just "an ammonia system". The Servel cycle is a
delicately balanced system of partial pressures in a hydrogen atmosphere.
The average refrigeration technician - even trained in compressor-based
ammonia systems - wouldn't have a clue about how to recharge one.

LLoyd

I have a neighbor who makes his living fixing them (lots of
off-gridders in the area). Even he tells people to switch to electric
for full-time refrigeration unless they don't have a choice.

Wayne