Maintenance
9.3 Corrective maintenance
1MB..1/2/3/4 - shaft heights 63 ... 355
128 Operating Instructions, 06/2020, A5E44455710A
● 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 off 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.
9.3.7 Cable entries, sealing plugs and thread adapters
All cable entries and sealing plugs must be approved for use in the respective hazardous
zone.
● Any openings that are not being used must be sealed using the appropriate certified
sealing plugs.
● Please observe the manufacturer's specifications when fitting cable entries.
Note the following when mounting:
● Avoid damaging the cable jacket.
● Adapt the tightening torques to the cable jacket materials.
Observe the documentation for tightening torques of the cable entries and sealing plugs for
direct mounting at the machine as well as additional glands (e.g. adapters).
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