Siemens SCALANCE XR524-8C - Upkeep and Maintenance Tasks; Changing the Fan Unit

SCALANCE XR-500
Operating Instructions, 05/2017, A5E03275845-11
75
Upkeep and maintenance
7
7.1
Changing the fan unit
The following devices have a fan unit:
● SCALANCE XR528-6M
● SCALANCE XR552-12M
NOTICE
Operation of the SCALANCE XR-500 only with fan unit
Use a SCALANCE X-500 only with a correctly fitted fan unit. Operating without the fan is
not possible and would damage the device!
You can, however, replace the fan unit during operation. Note the following parameter
requirements.
Requirement
If you replace the fan unit during operation, the ventilation of the housing may be interrupted
at:
● an ambient temperature of 60 °C - 50 °C for a maximum of 30 seconds.
● an ambient temperature of 40 °C - 50 °C for a maximum of 1 minute.
● an ambient temperature lower than 40 °C for a maximum of 2 minutes.
To give yourself more time when replacing the unit, make sure that the device’s ambient
temperature is as low as possible.