96
CDHH-SVX003C-EN
During the purge refrigeration circuit Off cycle, the time
remaining is displayed as Time Until Next Purge Run in the
Log Sheet that you can view from the Tracer
®
AdaptiView™ display.
If the compressor is turned Off during the purge
refrigeration circuit Off cycle, the purge transfers to
Adaptive Mode Procedure—Chiller Compressor
Off.“Adaptive Mode Procedure—Chiller Compressor
Off,” p. 96 includes an illustration of this process.
Adaptive Mode Procedure—Chiller Compressor
Off
Refer to the following figure for an illustration of the process
described in this subsection.
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)
Note: These two values can be seen on the Tracer
®
AdaptiView™ display.
Figure 67. Adaptive chiller OFF flow chart
First chiller power-
up. Purge operates
continuously for 168
hours to collect data.
Chiller On or Off.
Chiller Off. Purge Off.
The purge control reviews the
historical pump-out data for
“chiller On” and “chiller Off” and
determines the Pumpout Time
(from the last 24 hours, or the
daily average over the last 7 days,
whichever is greater).
Turn purge Off.
Is purge
running for
60 minutes
without
purging?
Yes
No
Hold purge Off
for 6 hours.
No
No
No
Yes
Yes
Yes
Is Pumpout
Time less than
5 minutes?
Is Pumpout
Time less than
3 minutes?
Is Pumpout
Time less than
1 minute?
Hold purge Off
for 3 days.
Hold purge Off
for 2 days.
Hold purge Off
for 1 day.
Run purge.
The purge will be shutdown for a corresponding period of
time, as shown in the following table:
Start-up and Shutdown
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