Corrective Maintenance - Siemens SIMOTICS SD 1LE5 Operating Instructions Manual

Maintenance

9.3 Corrective maintenance

• There must be a clearance of at least 1 x air intake diameter in the axial direction.
• A uniform gap must be maintained between the impeller and the air intake assembly.
Servicing the external fan motor
• Perform an occasional visual inspection of the external fan motor and check it electrically
and mechanically every time the rolling bearings are replaced.
• Replace the permanently lubricated rolling bearing on the external 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.
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 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.
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1LE5, 1PC4 shaft height 315/355
Operating Instructions, 10/2020, A5E41454666A