7 Servicing/Maintenance
31 of 36
KSB IE3-Motor
7.4.4 Dismantling the fan
1. Remove the clamping screws or circlip (depending on the size).
2. Pull off the fan using a suitable tool.
7.4.5 Dismantling the rotor
ü Suitably sized lifting equipment is available.
1. Remove non-drive-end and drive-end keys and store them in a safe place.
2. Remove the bolts from the drive-end bearing cover.
3. Stand the motor housing upright (drive end up); pull the bearing cover and
rotor out of the motor housing using suitable lifting equipment and set them
down.
7.4.6 Dismantling the bearings
Fixed bearing at drive end
ü The rotor has been removed.
ü The keys have been removed and are stored in a safe place.
1. Remove the circlip or bearing cover plate from the bearing cover, then remove
the bearing cover.
2. Pull off the bearing using a suitable tool.
Radial bearing at non-drive end
ü The rotor has been removed.
ü The keys have been removed and are stored in a safe place.
1. Pull off the spring washer from the shaft end.
2. Pull off the bearing using a suitable tool.
7.5 Assembling the motor
WARNING
Improper lifting/moving of heavy assemblies or components
Personal injury and damage to property!
▷ Use suitable transport devices, lifting equipment and lifting tackle to move
heavy assemblies or components.
CAUTION
Incorrect assembly
Damage to windings!
▷ When installing the bearing cover, take care not to damage the windings
protruding out of the motor housing.
General
▪ The motor should be assembled on a marking-out plate if possible. This will
ensure that the foot areas of the motor are properly aligned.
▪ Always reassemble the motor in accordance with the corresponding exploded
view.
▪ Clean all dismantled components and check them for signs of wear.
▪ Damaged or worn components must be replaced by new ones.
▪ Always use new tolerance rings.
▪ Make sure that sealing surfaces are clean and that O-rings or gaskets are properly
fitted.
Tightening torques
For reassembly, tighten all screws and bolts as specified in this manual.
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General