Corrective Maintenance; Rolling Bearings - Siemens SIMOTICS DP Operating Instructions Manual
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Maintenance
9.3 Corrective maintenance
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
40 000 operating hours or five years at the latest.
9.3
Corrective maintenance
Observe the following when carrying out any work on the machine:
• Comply with the general safety instructions (Page 11).
• Comply with the applicable national and sector-specific regulations.
• When using the machine within the European Union, comply with the specifications laid
down in EN 50110‑1 regarding safe operation of electrical equipment.
If the motor has to be transported, please observe the information and instructions in the
"Transport (Page 30)" chapter.
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 simplifies 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.
See also
Terminal boxes, end shields, grounding conductors, sheet metal fan covers (Page 132)
9.3.1
Rolling bearings
Refer to the rating plate or the catalog for the designations of the bearings being used.
104
1FZ shaft height 280
Operating Instructions, 02/2022, A5E51698698A
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