System Restart After Extended Shutdown - Trane CGWF Installation Operation & Maintenance

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Unit Shutdown
CAUTION
Equipment Damage!
Lock evaporator water pump disconnect open to prevent pump damage.
If unit water vessels are exposed to sub-freezing ambient temperatures,
take precautions to prevent unit damage.
Lock unit main disconnect open to prevent compressor damage due to
accidental start-up while system is in "shutdown" condition.

System Restart After Extended Shutdown

Use this procedure to prepare the system for restart after an extended shutdown.
CAUTION
Compressor Damage!
To prevent compressor damage, be certain that all refrigerant valves are
open before starting the unit.
1. Open (backseat) the liquid line and discharge line service valve(s).
2. Close the unit main disconnect and the unit-mounted disconnect (if used).
3. Check compressor crankcase oil levels. Oil should be visible in the compressor
oil level sight glass.
4. Fill the chilled water circuit(s) if drained during shutdown. Vent the system while
filling it.
5. Close the fused disconnect switch(es) for the water pumps.
6. Start the water pump(s). With water pumps running, inspect all piping connec-
tions for leakage. Make any necessary repairs.
7 . With water pump(s) running, adjust chilled water flow and check water pressure
drop through the evaporator.
8. Check the flow switch on the evaporator outlet piping for proper operation.
9. Stop the water pump(s).
10. Proceed to "Start-Up Procedure".
CGWF-SVX01A-EN