9.3.6 Fan
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 o 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
• Shaft height 63: Release the two M4 clamping screw so that the fan can rotate freely on the
shaft.
• Shaft heights 71...90: Release the M5 set screw so that the fan can rotate freely on the shaft.
• Shaft height 100...355: Remove the locking ring.
• Use a suitable tool to pull o the fan (puller).
• Locate the arms of the pulling tool in the openings in the fan in the vicinity of the hub.
• Alternatively, place the pulling tool 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.
9.3.6.1 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.
Maintenance
9.3Corrective maintenance
1MB..1/2/3/4 - shaft heights 63 ... 355
134 Operating Instructions, 11/2023, A5E52779900A
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