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Table 15, Upper Limit For Wear Metals And Moisture In Polyolester Oils In Daikin
Aluminum
Copper
Iron
Moisture
Silica
Total Acid Number (TAN)
Key To Action
Re-sample after 500 hours of unit operation. If content increases less than 10%, change oil and filter and re-
1.
sample at normal interval. If content increases 25% or more, inspect compressor.
Re-sample after 500 hours of unit operation. If content increases less than 10%, change filter drier and re-
2.
sample at normal interval. If content increases 25% or more, monitor for water leak. Since POE lubricants
are hygroscopic, many times the high moisture level is due to inadequate handling and packaging. The
reading
MUST BE USED
For TAN between .10 and .19, re-sample after 1000 hours of unit operation. If TAN increases above .19,
3.
change oil, oil filter and filter drier and re-sample at normal interval.
Centrifugal Chillers
Elements
in conjunction with moisture readings
Upper Limit (ppm)
50
100
100
150
50
.19
Action
1
1
1
2 &3
1
3
TAN
D–EIMWC00808-16HU - 58/64
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