KSB Etachrom L, Инструкция по установке и эксплуатации

Страница: 48 / 70

7 Servicing/Maintenance
48 of 70
Etachrom L
1212.8/19-EN
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.
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
ü The notes and steps stated in ( ð Section 7.4.1, Page 47) to
(
ð
Section 7.4.3, Page 48) have been observed/carried out.
ü On pump sets without spacer-type coupling, the motor has been removed.
WARNING
Back pull-out unit tilting
Risk of crushing hands and feet!
▷ Suspend or support the bearing bracket at the pump end.
1. Secure bearing bracket 330 against tipping over, if required, e.g. by supporting
or suspending it.
2. Unbolt support foot 183 from the baseplate.
3. Undo nut 920.01 and hexagon head bolt 901.99 at the pump casing.
4. Pull the bearing bracket with the discharge cover and the complete rotor out of
the casing (back pull-out unit).
5. Place the back pull-out unit on a clean and level surface.
6. Pull off O-ring 412.35. Check for any damage. Dispose of any damaged O-rings.
7.4.5 Removing the impeller
ü The notes and steps stated in ( ð Section 7.4.1, Page 47) to
(
ð
Section 7.4.4, Page 48) have been observed/carried out.
ü The back pull-out unit has been placed in a clean and level assembly area.
1. Undo impeller nut 920.95 (right-hand thread).
2. Remove impeller 230 with an impeller removal tool.
3. Place impeller 230 on a clean and level surface.
4. Remove key 940.01 from shaft 210.