Maintenance and servicing
6.4 Replacing components
Cabinet Modules NEMA
302 Manual, 04/2014, A5E03586450A
The average service life of the device fans is approximately 50,000 hours. In practice,
however, the service life depends on other variables (e.g. ambient temperature, cabinet
enclosure, etc.) and, therefore, may deviate from this value.
The fans must be replaced in good time to ensure the availability of the Cabinet Module.
● Disconnect the cabinet from the power supply (do not forget the external power supplies).
● Remove the protective cover.
● Allow unimpeded access.
The steps of the removal procedure correspond to the numbers shown in the previous figure.
1. Remove the busbars (12 screws).
2. Remove the retaining screws for the fan (3 screws).
3. Disconnect the supply cables (1 x "L", 1 x "N").
You can now carefully remove the fan.
Device damage due to signal cable damage 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 is performed the same as removal, but in the reverse order.
Note
Pay attention to the tightening torques
The tightening torques specified in the "Tightening torques for screw connections" table must
be observed.
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