Siemens SINAMICS S120 Equipment Manual page 491

Description
The average service life of the device fans is 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.
The fans must be replaced in good time to ensure that the device is available.
Preparatory steps
● Disconnect the drive line-up from the power supply.
● Allow unimpeded access
● Remove the protective cover
Removal
The removal steps are numbered in accordance with the numbers in the diagram.
1. Remove the retaining screws for the fan unit (3 screws).
2. Unplug connector –X630.
You can now carefully remove the fan.
NOTICE
Damage to the device if signal cables become damaged during removal
Signal cables can become damaged when the fan is removed. This can cause the device to
fail.
• When removing the fan, ensure that you do not damage any signal cables.
Installation steps
To reinstall, perform the above steps in reverse order.
Note
Pay attention to the tightening torques
The tightening torques specified in the table "Tightening torques for screw connections" must
be observed.
Air-cooled chassis power units
Manual, 07/2019, 6SL3097-4AE00-0BP9
Maintenance and Servicing
11.4 Replacing components
489