If you (or anyone else) ever has to charge a AC system from scratch,
you'll find that the compressor will not kick in, until a certain
minimum pressure exists (that's what one of those switches in the
cabinet/pillar is for). Great fun (read that as anxiety) watching the
pressure go (apparently) too high (50psi in my case)  on the low side,
before the switch registers sufficient pressure and allows the
compressor to kick in. Never have this problem when just recharging,
only that first time of adding freon to a freshly evacuated system.

On Wednesday, July 23, 2003, at 11:40 PM, Debra Clark wrote:

>  But I put the gauge to it and it read about 25 so I gave it
> just a little shot of freon and the pressure was already up to just
> over 45.