Trane CVGF-SVU02B-E4 - Page 63

CVGF-SVU02B-E4
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Figure 21. CVGF sequence of operation: momentary power loss, (DynaView
™
and starter module remain
powered)
Momentary Power
Loss Detected
Momentary Power Loss Cleared
and Need to Cool
Shutting Down
Waiting to Start
Running
Starting
Compressor
Enforce Power Up Delay Timer
Establish Condenser Water Flow
(6 Second Minimum)
Close IGV (0-50 Seconds)
Command IGV Closed
Energize Condenser
Water Pump Relay
Confirm Condenser Water Flow Within 4
minutes 15 seconds (6 Second Filter)
Enforce Restart Inhibit Timer (30 Minutes)
De-Energize
Compressor
Confirm No Compressor Currents
Within 0-30 Seconds
De-Energize Condenser
Water Pump Relay
Machine Protection and
Adaptive