61
Data Logging
(see Graph/Log Charts for copying on pages 62-66)
The chiller operator may wish to maintain a log on a daily basis, recording at least the
following data:
Purge pumpout time last 24 hours.
30-Day Average pumpout time per day.
Purge 30-day average pumpout time while chiller running.
Purge 30-day average pumpout time while chiller off.
Pumpout time during the first 3 hours after chiller shutdown.
A sudden change in the trend of this data, which cannot be accounted for by a relative
change in chiller operational patterns, may indicate the need f or a system leak check or
repair.
Example
: A graphical data log is much easier to follow and interpret than a tabular log
(see sample chart below).
4 5 M in
4 0 M in
3 5 M in
3 0 M in
2 5 M in
x
2 0 M in
x
x
x
x
x
x
x
1 5 M in
x
x
x
x
x
x
x
x
x
1 0 M in
x
x
x
x
x
x
x
x
x
x
x
5 M in
x
x
x
0 M in
D A Y
1
2
3
4
5
6
7
8
9
1 0
1 1
1 2
1 3
1 4
1 5
1 6
1 7
1 8
1 9
2 0
2 1
2 2
2 3
2 4
2 5
2 6
2 7
2 8
2 9
3 0
3 1
D a y s o f t h e M o n t h
Summary of Contents for Redi-Purge PRG-113-C3
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