KSB Vitachrom, Installation & Operating Manual

Page: 44 / 72

7 Servicing/Maintenance
44 of 72
Vitachrom
7.4.4 Dismantling the motor
WARNING
Motor tilting
Risk of crushing hands and feet!
▷
Suspend or support the motor to prevent it from tilting.
ü The notes and steps stated in ( ð Section 7.4.1, Page 42) to
(
ð
Section 7.4.3, Page 43) have been observed/carried out.
1. Depending on the pump/motor size, unscrew the bolts that fix the motor foot
to the foundation.
2. Undo nuts 920.01.
3. Remove cover plates 68-3 from drive lantern 341.
4. Undo hexagon head bolts 901.3.
5. Insert both lock washers 931 into the groove in shaft 210.
6. Tighten hexagon head bolts 901.3, if fitted.
7. Remove the motor.
7.4.5 Removing the back pull-out unit
WARNING
Back pull-out unit tilting
Risk of squashing hands and feet!
▷ Suspend or support the back pull-out unit at the pump end.
ü The notes and steps stated in ( ð Section 7.4.1, Page 42) to
( ð Section 7.4.4, Page 44) have been observed/carried out.
1. If required, suspend or support the back pull-out unit to prevent it from tipping
over.
2. Undo nut 920.02 (with bolted discharge cover) or 901.02 (with clamped
discharge cover) at the volute casing.
3. Pull the back pull-out unit out of the volute casing.
4. Remove and dispose of O-ring 412.01.
5. Place the back pull-out unit on a clean and level surface.
7.4.6 Removing the impeller
ü The notes and steps stated in ( ð Section 7.4.1, Page 42) to
( ð Section 7.4.5, Page 44) have been observed/carried out.
ü The back pull-out unit is kept in a clean and level assembly area.
1. Undo impeller nut 922.01 (right-hand thread).
2. Remove O-ring 412.02 from impeller nut.
3. Remove impeller 230.01 with an impeller removal device.
4. Place impeller 230.01 on a clean and level surface.
5. Remove key 940.01 from shaft 210.01.
6. Remove O-ring 412.03 from impeller hub and/or pull V-ring 411.05 off shaft
210.01.