Siemens Sinamics S120 Manual page 351
Liquid-cooled chassis power units
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Also See for Sinamics S120:
- Function manual (1094 pages) ,
- Diagnostic manual (947 pages) ,
- Manual (848 pages)
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Service for the cooling circuit
The following service is recommended for the cooling circuit:
● The coolant should be checked 3 months after the cooling circuit is filled for the first time
and, subsequently, once a year.
When analyzing the coolant, the concentration and the general conditions of the
inhibitor/antifreeze should be checked.
● If the cooling water becomes cloudy, is colored, or becomes contaminated by mold
spores, the cooling circuit must be cleaned and refilled.
● It is recommended that you contact the coolant manufacturer to analyze the liquid
coolant.
● If the coolant level has dropped, the loss should be corrected for closed or semi-open
circuits with a prepared mixture of coolant basis and antifreeze, see Chapters "Coolant
properties (Page 332)" and "Antifreeze, biocides, inhibitors (Page 335)".
Liquid-cooled chassis power units
Manual, (GH7), 11/2016, 6SL3097-4AM00-0BP7
Maintenance and servicing
10.2 Maintenance
351
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