In a message dated 8/3/02 12:30:05 PM, rob@UNIXGUY.COM writes:

>The compressor is probably not engaging because the
>system doesn't have enough charge to turn on the low pressure safety
>switch.  On to diagnose the problems charging the low pressure side
>of the system, methinks.

Sometimes the synergy of this mailing list is amazing....

Yep, you will find (as I did today) that you have to stick in a little more
of the refridgerant so that the low pressure side has enough pressure to kick
in the relay.