Start-Up and Shutdown
RTAF-SVX001A-EN 53
Power Up to Starting
Figure 44, p. 53 diagram shows the timing from a power
up event to energizing the first compressor.The shortest
allowable time would be under the following conditions:
• No motor restart inhibit time left from subsequent
starts
• Evaporator Water flow occurs quickly with pump on
command
• Power up Start Delay set to 0 minutes
• Need to cool (differential to start) already exists
• Oil level is detected immediately
The above conditions would allow for a minimum power
up to starting the first compressor time of about 45
seconds (variations may exist due to options installed).
Note that it is not advisable to start a chiller “cold”, the oil
heaters should be in operation for a sufficient length of
time prior to first start. Consult the chiller’s IOM for
specifics.
Figure 44. Sequence of events: power up to starting
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