Maintenance Of The Supplementary-Cooler Fans; Maintenance Intervals - Siemens SINAMICS S120 Manual

7.4.6

Maintenance of the supplementary-cooler fans

The fans should be inspected in regular intervals for smooth running and normal housing
temperatures.
The average service life of the fans is approximately 50,000 hours. In practice, however, the
service life depends on other variables (e.g. ambient temperature, degree of cabinet
protection, etc.) and, therefore, may deviate from this value.
If necessary, the heat exchanger fans can be replaced, see Chapter Replacing the heat
exchanger fan (Page 212).
7.4.7

Maintenance intervals

Note
The specified maintenance intervals are limit values that may need to be reduced depending
on the operational conditions.
The operating company must always ensure that an appropriate maintenance is performed.
The maintenance intervals depend on the calendar time or the operating hours, whichever
occurs first.
Maintenance intervals of the components
Table 7- 2
Component
Coolant
Filters
Gaskets
Cooling hoses
Pumps
Fan
Cabinet Modules liquid cooled
Manual, 10/2015, A5E37067587A
Maintenance intervals
Review
Annually
Regularly, at least every 6 months
Regularly, at least every 6 months
Regularly, at least every 6 months
Regularly, at least every 6 months
Regularly, at least every 6 months
Maintenance and servicing
7.4 Maintenance of the cooling circuit
Replacing
After ten years
-
After 6 years
After six years
Slide ring seals after two years
After approximately 50.000 operating
hours
211