
Disassembly
WARNING
Rotating or live parts
Live electrical parts at the external fan motor are dangerous. Contact with them can cause
death, serious injury or material damage.
1. Before you start working on the fan, disconnect the fan motor from the supply system.
2. Make sure that the device cannot be switched back on.
3. Wait until the external fan has reached a standstill before you start work.
1. Secure the external fan cowl against falling before you start working.
2. If a speed sensor is installed, it is located inside the external fan cowl. Separate the brought-
out cables of the speed sensor before removing the external fan cowl in the corresponding
terminal box.
3. Loosen the fixing screws that secure the external fan cowl on the enclosure.
4. Observe existing retaining components and retain them for the reassembly.
Assembly
Proceed in the reverse order to assemble the external fan cowl.
1. If a speed sensor is installed:
– Ensure that the cables of the speed sensor are not damaged during the assembly.
– Before attaching the external fan cowl, route the cables of the speed sensor to the
outside between two cooling ribs and affix them temporarily.
2. Position the external fan cowl and tighten the fixing screws.
3. When installing the external fan cowl, make sure that the retaining components are
undamaged and correctly installed.
4. Connect the encoder cable.
9.3.6
Rolling bearing
● Shaft sealing rings are used to seal machines at the rotor shaft.
● Use the specified bearings.
● Ensure that the bearing sealing disks are in the correct position.
● Insert the elements for bearing preloading at the correct end.
● Fixed bearings can have a locking ring or bearing cover.
● Seal the bearing cap screws with the appropriate gaskets or with grease.
● Do not interchange the position of the bearing covers - DE and NDE or inner and outer.
Protect the bearings against the ingress of dirt and moisture.
Maintenance
9.3 Corrective maintenance
1MB5 SH 400/450
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Operating Instructions, 05/2019, A5E45959221A
Summary of Contents for SIMOTICS XP 1MB5 SH400
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