Original message
| Frostedguy
|  "Canatal a/c"
, posted Tue 22 Jul 22:09  
I'm working on a Canatal unit (water cooled). I shut down to do maintenance and when i try to restart the unit the compressor 1 cut on high pressure at 350 and operate about 3 seconds before trip on high pressure.
The compressor 2 run nice. Condenser water valve ok, water temp ok, solenoid valve for pump down seems to operate normally, no valves close on discharge or liquid line. I have access valve before the filter-drier on liquid line, take pressure: same thing at the discharge. Cooled water lines are purge and the flow in lines are ok. In 3 second the low pressure drop but don't have time to stabilize. This is a Copeland Scrool compressor and the unit operate with 407c.
Any ideas ? Thanks!
Be careful and work safety.
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