• Do not apply any hammer blows to avoid damaging the rotor shaft, the fan and the bearings.
• Order the appropriate new parts if damaged.
9.4.4.2 Mounting fans
• 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.
9.4.5 Canopy; mounting a rotary pulse encoder under the canopy
Canopy, encoder under the canopy
For screwed canopies, insert the fastening screws through the holes on the outer surface of
the canopy.
Tighten the fastening screws with a torque of 3Nm±10%.
9.4.6 Tightening torques
Note the information in Chapter Tightening torques (Page133).
9.4.7 Screw lock washers
Nuts or bolts that are mounted together with locking, resilient and/or force-distributing
elements (e.g., safety plates, spring-lock washers, etc.) must be retted together with identical,
fully functional elements.
Locking and sealing elements must always be replaced!
9.4.8 Links
• Replace any corroded screws.
• Take care not to damage the insulation of live parts.
• Document the position of any rating and supplementary plates that have been removed.
• Avoid damaging the centering edges.
Maintenance
9.4Corrective maintenance
1LE5, 1PC4 shaft heights 280 ... 355
Operating Instructions, 11/2022, A5E41454666A 111
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