KSB Magnochem-Bloc, Installation & Operating Manual

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7 Servicing/Maintenance
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Magnochem-Bloc
CAUTION
Dry bearing surfaces during assembly
Dry running of the bearings at pump start-up!
▷
Before installing the bearings, wet the running surfaces of the bearings with a
suitable fluid (e.g. water or oil).
20. Wet the bearing bush with liquid.
21. Fit pump-end taper lock ring 515.21.
7.5.3 Fitting the impeller
ü The notes and steps stated in ( ð Section 7.5.1, Page 59) to
( ð Section 7.5.2, Page 60) have been observed/carried out.
ü
It has been checked whether the impeller can be easily mounted on the shaft.
ü The individual parts are kept in a clean and level assembly area.
ü All dismantled parts have been cleaned and checked for wear.
ü
Any damaged or worn parts have been replaced by original spare parts.
ü The sealing surfaces have been cleaned.
ü The plain bearing assembly has been mounted, is positioned in its guard and
secured against tilting.
1. Insert key 940.01 into shaft 210.03.
2. Fit impeller 230.
3. Insert disc 550.87.
NOTE
Repeatedly rotate the casing cover by hand while tightening the nuts. Make sure
the casing cover is easy to rotate. Stop the tightening procedure if jamming occurs.
Loosen the nut and repeat the tightening procedure. If jamming occurs repeatedly,
dismantle the components (complete plain bearing assembly) again and check for
cleanliness and correct dimensions.
4. Tighten hexagon nut 920.95 with a torque wrench. Hold impeller 230 with a
suitable tool (belt wrench). Observe the tightening torques.
(
ð Section 7.6, Page 74)
5. Remove the pre-assembled assembly from the guard and place it onto impeller
230 in a vertical position. Secure against tilting.
6. Design with auxiliary impeller 23-2.02 only: place auxiliary impeller 23-2.02 on
inner rotor 818.01.
7. Design with auxiliary impeller 23-2.02 only: tighten hexagon socket head cap
screws 914.26. Observe the tightening torques. ( ð Section 7.6, Page 74)
7.5.4 Fitting the containment shroud
7.5.4.1 Fitting the containment shroud - metallic materials
Design without intermediate piece
ü The notes and steps stated in ( ð Section 7.5.1, Page 59) to
(
ð
Section 7.5.3, Page 64) have been observed/carried out.
ü The individual parts have been placed in a clean and level assembly area.
ü All dismantled parts have been cleaned and checked for wear.