KSB RPH - Page 47

7.4.2 Preparing the pump set
1. Interrupt the power supply and secure the pump against unintentional start-up.
2. Disconnect and remove all auxiliary pipework.
3.
Remove the coupling guard.
4. Remove the coupling spacer, if any.
5. Drain the oil fill of oil-lubricated bearings.
7.4.3 Removing the motor
NOTE
On pump sets with spacer-type couplings, the back pull-out unit can be removed
while the motor remains bolted to the baseplate.
WARNING
Motor tipping over
Risk of crushing hands and feet!
▷ Suspend or support the motor to prevent it from tipping over.
1. Disconnect the motor from the power supply.
2. Unbolt the motor from the baseplate.
3.
Shift the motor to separate it from the pump.
7.4.4 Removing the back pull-out unit
✓ At pump sets without spacer-type coupling, the motor has been removed.
WARNING
Back pull-out unit tipping over
Risk of crushing hands and feet!
▷ Suspend or support the bearing bracket at the pump end.
1. If required, suspend or support bearing bracket 330 to prevent it from tipping
over.
2.
Remove hexagon nut 920.01 at volute casing 102.
3.
Use forcing screws 901.30 to pull the back pull-out unit out of volute casing 102.
4. Remove and dispose of joint ring 411.10.
5. Place the back pull-out unit on a clean and level surface.
7.4.5 Removing the impeller
7.4.5.1 Loosening the impeller — for bearing brackets B02 to B05
✓ The notes and steps stated in (⇨ Section 7.4.1 Page 46) to (⇨ Section 7.4.4 Page
47) have been observed/carried out.
✓ The back pull-out unit has been placed in a clean and level assembly area.
1.
Unscrew impeller nut 922.01 with threaded insert (right-hand thread).
For versions with auxiliary impeller:
Unscrew auxiliary impeller 23-2 with the
threaded insert (right-hand thread).
2. Remove and dispose of joint ring 411.31, if any
3. Remove lock washer 931.02.
7 Servicing/Maintenance
RPH
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