Servicing the separately driven fan motor
• Occasionally inspect the separately driven fan motor, and check it electrically and
mechanically every time the rolling bearings are replaced.
• Replace the permanently lubricated rolling bearing of the separately driven fan motor after
40000operating hours or 5 years at the latest.
9.4 Corrective maintenance
Comply with the following when carrying out any work on the machine:
• Comply with the general safety instructions (Page19).
• Comply with the applicable national and sector-specic regulations.
• When using the motor within the European Union, comply with the specications laid down
in EN50110‑1 regarding safe operation of electrical equipment.
9.4.1 Repairs are only permissible within the dened scope.
Risk of explosion as a result of inadmissible repair work
Repairs are only permissible within the scope of the work described in these operating
instructions. Otherwise an explosion can occur in an explosive atmosphere. This can result in
death, serious injury or material damage.
• For repairs to go beyond this scope, please contact the Service Center.
Note
Before commencing removal, you should mark how each of the fastening elements has been
assigned, as well as how internal connections are arranged. This simplies subsequent
reassembly.
Avoid damaging the windings protruding out of the stator enclosure when assembling the end
shield.
If possible, assemble the machine on and alignment plate. This ensures that the mounting feet
surfaces are all on the same plane.
Sealing measures
1. Apply the necessary liquid sealant, e.g. Fluid-D, Hylomar, to the centering edge.
2. Check the terminal box seals, and if required, replace these.
3. Repair any damage to the paint, also to screws/bolts.
4. Take the necessary measures to ensure compliance with the applicable degree of protection.
5. Do not forget the foam rubber cover in the cable entry. Completely seal the holes, and ensure
that cables do not come into contact with sharp edges.
Maintenance
9.4Corrective maintenance
1LE5, 1PC4 shaft heights 280 ... 355
106 Operating Instructions, 11/2022, A5E41454666A
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