Separately Driven Fan Cowl - Siemens SIMOTICS XP 1MB5 Operating Instructions Manual

Maintenance
9.4 Corrective maintenance
Disassembly
1. The external fan
according to DIN 5254 should preferably be used for this purpose.
2. Pull off the external fan by hand.
Figure 9-2
Assembly
1. Push the external fan
2. Insert the retaining ring
• Take care not to damage the snapping mechanisms on fans that are equipped with these.
• To ensure this, the fans should be heated to a temperature of approximately 50 °C around the
area of the hub.
• If any damage is caused, request new parts.
9.4.7

Separately driven fan cowl

The separately driven fan is installed in the separately driven fan cowl. To remove or replace it,
the separately driven fan cowl must be disassembled.
Disassembly
Rotating or live parts
Live electrical parts at the separately driven 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 separately driven fan has reached a standstill before you start work.
128
①
is fixed on the shaft with a locking ring
Ventilation (schematic diagram with radial fan)
①
up to the end stop on the shaft end.
②
WARNING
into the corresponding groove and check its fit.
②
. Remove the locking ring. Pliers
1MB5 shaft height 400/450
Operating Instructions, 04/2023, A5E52802354A