KSB Magnochem-Bloc, Installation & Operating Manual

Page: 53 / 96

7 Servicing/Maintenance
53 of 96
Magnochem-Bloc
7.4.4 Dismantling the back pull-out unit
7.4.4.1 Dismantling the motor with the outer rotor (vertical dismantling)
CAUTION
Collision between outer rotor and containment shroud
Damage to containment shroud or outer rotor!
▷ Never undo the disc fitted at the face of outer rotor 818.02.
ü Steps ( ð Section 7.4.1, Page 51) to ( ð Section 7.4.3, Page 52) have been
observed/carried out.
ü The back pull-out unit has been placed vertically on the impeller in a clean and
level assembly area.
ü The back pull-out unit has been secured against tilting.
1. Undo hexagon nuts 920.04.
2. Use pump-end forcing screws 901.17 to separate motor 800 with outer rotor
818.02 and intermediate piece 132.03 from bearing bracket lantern 344.
3. Pull motor 800 with outer rotor 818.02 and intermediate piece 132.03 out of
bearing bracket lantern 344.
4. Place the outer rotor with the motor in a clean and level non-magnetic assembly
area.
5. Prevent the outer rotor with the motor from tilting.
NOTE
A disc is fitted at the face of outer rotor 818.02. This disc protects the magnets in
the outer rotor against chipping off in the event that outer rotor 818.02 collides
with containment shroud 82-15 due to the magnetic forces. Do not undo the disc.
7.4.4.2 Removing the bearing bracket lantern
CAUTION
Collision between bearing bracket lantern and containment shroud
Damage to the containment shroud!
▷
Use a suitable guard to protect the containment shroud (see table for
manufacturing dimensions of guard).
A suitable guard can be manufactured to the following dimensions.
D I
DA
L
S
Fig. 16: Guard dimensions