PRGD-SVX01F-EN
15
If the chiller compressor is turned Off, the purge
refrigeration circuit Off cycle is determined by the
purge control. The purge Off-cycle duration is
determined by the pump-out time, which is the greater
of the following two values:
• Daily Pumpout—24 hours (the pump-out time over
the last 24 hours whether the chiller is On or Off)
• Average Daily Pumpout—7 days (the pump-out
time with the chiller On over the last 7 days)
NNoottee:: These two values can be seen on the Tracer
®
AdaptiView
™
display.
Figure 5. Adaptive chiller OFF flow chart
The purge will be shut down for a corresponding
period of time, as shown in the following table:
Pumpout Time with chiller On or Off
(over the last 24 hours or daily average
over the last 7 days, whichever is
greater)
Purge Off
cycle
duration
Pumpout Time ≤ 1 minute 3 days
1 minute < Pumpout Time ≤ 3 minutes 2 days
3 minutes < Pumpout Time ≤ 5 minutes 1 day
Pumpout Time > 5 minutes
6 hours
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