Siemens SINAMICS G150 Operating Instructions Manual page 570

Maintenance and servicing
11.4 Replacing components
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 maintain the availability of the cabinet unit.
Preparatory steps
● Disconnect the cabinet unit from the power supply.
● Allow unimpeded access.
● Remove the protective cover.
Removal steps
The removal steps are numbered in accordance with the numbers in the diagram.
1. Remove the retaining screws for the fan (3 screws)
2. Disconnect the supply cables (1 x "L", 1 x "N")
You can now carefully remove the fan.
CAUTION
When removing, ensure that you do not damage any signal cables.
Installation steps
Installation is the same as removing, however in the reverse order.
CAUTION
The tightening torques specified in the table "Tightening torques for screw connections"
must be observed.
Note
Following fan replacement, the operating hours counter of the fan should be reset via p0251
= 0.
568
Converter cabinet units
Operating Instructions, 03/2012, A5E03263466A