Bearing Bushes; Links - Siemens SIMOTICS A 1FU8 Operating Instructions Manual

Maintenance
9.8 Corrective maintenance
NOTICE
Destruction of the fan
Material damage can occur by forcefully removing the fan from the shaft.
Take care not to damage the snapping mechanisms on fans that are equipped with these.
Plastic fan
● Correctly expose the breakout openings provided in the fan plate
● Heat up the fans to a temperature of approximately 50° C around the area of the hub.
● Use a suitable tool to pull off the fan (puller).
● Locate the arms of the pulling tool in the breakout openings and slightly tension the
pressure screw of the tool.
● For fans with snapping mechanisms, simultaneously release the two snap-in lugs of the
fan from the annular shaft groove.
Keep the snap-in lugs in this position.
● Uniformly withdraw the fan from the shaft by turning the pressure screw of the pulling tool.
● Do not apply any hammer blows to avoid damaging the rotor shaft, the fan and the
bearings.
● Order the appropriate new parts if damaged.
Metal fan
● Remove the locking ring.
● Use a suitable tool to pull off the fan (puller).
● Locate the arms of the pulling tool in the openings in the fan in the vicinity of the hub.
● Alternatively, the pulling tool can be placed at the outer edge of the fan plate.
● Uniformly withdraw the fan from the shaft by turning the pressure screw of the pulling tool.
● Do not apply any hammer blows to avoid damaging the rotor shaft, the fan and the
bearings.
● Order the appropriate new parts if damaged.
9.8.3.1

Bearing bushes

Protect the bearings against the ingress of dirt and moisture.
9.8.3.2

Links

1. Replace any corroded screws.
2. Take care not to damage the insulation of live parts.
3. Document the position of any rating and supplementary plates that have been removed.
4. Avoid damaging the centering edges.
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Operating Instructions, 02/2016, 5 610 70000 02 000
1FU8