Trane PRGD series, Installation, Operation And Maintenance Manual

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PRGD-SVX01F-EN 23
Operator Interface
The Tracer® AdaptiView™ display, which is mounted
on the side of the chiller, allows you to monitor chiller
status and make changes to its operation, including the
purge system. Refer to
Operations Guide: Tracer
AdaptiView Display for Water-Cooled CenTraVac
Chillers
(CTV-SVU01*-EN) for a complete description of
this display.
This section provides more detail about the purge-
related information that you can access through the
display.
Reports
From the Reports screen menu, you can access basic
operating data for the purge system by selecting one of
the following buttons:
• Log Sheet
• ASHRAE Chiller Log
• Purge Operating Modes
Log Sheet
The following status points appear on the Log Sheet:
N No otte e:: The status points also appear on the purge
component screen of the Tracer ® AdaptiView™
display. The purge component screen is
accessible from the purge touch target on the
home screen of the display (refer to CTV-
SVU01*-EN).
• T Tiim me e U Un nttiill N Ne ex xtt P Pu urrg ge e R Ru un n.. Displayed if the purge
is in Adaptive mode and is idle. It indicates the
amount of time left on the adaptive cycle timer.
• D Da aiilly y P Pu um mp po ou utt— —2 24 4 H Ho ou urrss.. Indicates the daily
pumpout time for the last 24 hours (a moving 24-
hour window). It indicates how the hermetic
integrity of the chiller compares to historic pump-
out times for the same chiller. It also allows a check
against factory-recommended values.
• A Av ve erra ag ge e D Da aiilly y P Pu um mp po ou utt— —7 7 D Da ay yss.. Indicates the
average daily pump-out time for the last 168 hours
(a moving 168-hour window). It enables a
comparison of present pump-out times to past
averages, and can be another indication of the
hermetic integrity of the chiller.
• D Da aiilly y P Pu um mp po ou utt L Liim miitt//A Alla arrm m.. Indicates the limit
value that an operator has set in the S Se ettttiin ng gss
menu. When the daily pumpout rate exceeds this
value, purge operation stops and a diagnostic is
generated.
• C Ch hiilllle err O On n— —7 7 D Da ay yss.. Indicates the percentage of
time during the past seven days (floating 168-hour
window) that the chiller was operating. You can use
it to help determine if a leak is present on the high
side or the low side of the chiller.
• P Pu um mp po ou utt C Ch hiilllle err O On n— —7 7 D Da ay yss.. Indicates the
percentage of the total purge pump-out time during
the past seven days that occurred while the chiller
was operating. You can use it to help determine if a
leak is present on the high side or the low side of
the chiller.
• P Pu um mp po ou utt C Ch hiilllle err O Offff— —7 7 D Da ay yss.. Indicates the
percentage of the total purge pump-out time during
the past seven days that occurred when the chiller
was not operating. You can use it to help determine
if a leak is present on the high side or the low side
of the chiller.
• P Pu um mp po ou utt— —L Liiffe e.. Indicates the total purge pump-out
time that has accumulated over the life of the
purge.
• P Pu urrg ge e R Rffg gtt C Cp prrssrr S Su uccttiio on n T Te em mp p.. Indicates the
purge refrigerant compressor suction temperature.
It is useful for diagnosing purge system problems.
• P Pu urrg ge e L Liiq qu uiid d T Te em mp p.. Indicates the temperature
sensed by the controller and used to inhibit purge
operation. The purge liquid temperature sensor,
when the chiller is operating, is the chiller saturated
condenser temperature sensor; when the chiller is
Off, it is the chiller saturated evaporator
temperature sensor. If this temperature is below the
Pumpout Inhibit Temperature that is defined in the
S
Se ettttiin ng gss menu, pump-out is not allowed. This
value is used to prevent inefficient operation of the
purge under certain conditions.
• C Ca arrb bo on n T Ta an nkk T Te em mp p.. Indicates the carbon bed
temperature and is useful for monitoring
regeneration and for diagnosing regeneration
system problems.
Purge Operating Modes
The Purge Operating Mode screen displays the current
mode and up to six submodes of operation for the
purge system. Only one mode can be active at a time,
while several submodes can be active simultaneously.
For more information on this subject, refer to
“Purge
Operating Modes,” p. 13 .
Modes
The four available modes of purge operation are:
• S Stto op p
• O On n
• A Au utto o
• A Ad da ap pttiiv ve e
Submodes
You can view submodes from the Purge Settings
screen. The available purge submodes are: