KSB ILN, Operating Manual

Page: 59 / 92

7 Servicing/Maintenance
59 of 92
ILN / ILNC / ILNR
5211.8/08-EN
7.5.3.2 Installing the mechanical seal
The following rules must be observed when installing the mechanical seal:
▪ Work cleanly and accurately.
▪
Prevent any damage to the seal faces or O-rings.
ü The notes and steps stated in ( ð Section 7.5.1, Page 53) and
(
ð
Section 7.5.3.1, Page 58) have been observed/carried out.
ü The bearing assembly as well as the individual parts have been placed 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ü Any damaged or worn parts have been replaced by original spare parts.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.
1. Apply a suitable lubricant to the O-rings of the mechanical seal to reduce
friction when fitting them into casing cover 161.
2. Insert the stationary assembly of the mechanical seal into casing cover 161.
3. Slide the rotating assembly of the mechanical seal onto the shaft.
CAUTION
Elastomers in contact with oil/grease
Shaft seal failure!
▷ Use water as assembly lubricant.
▷
Never use oil or grease as assembly lubricant.
NOTE
When fitting the mechanical seal, wet the shaft protecting sleeve and stationary
ring with water to prevent friction.
7.5.3.3 Fitting the impeller
ü The notes and steps stated in ( ð Section 7.5.1, Page 53) and
( ð Section 7.5.3.1, Page 58) to ( ð Section 7.5.3.2, Page 59) have been
observed/carried out.
ü The pre-assembled components (motor, shaft, drive lantern, discharge cover) as
well as the individual parts have been placed 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ü Any damaged or worn parts have been replaced by original spare parts.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.
1. Fit casing wear ring 502.2 onto casing cover 161.
2. Insert key 940.1 and slide impeller 230 onto shaft 210.
3. Screw on and tighten impeller nut 922. Observe the tightening torques.
(
ð
Section 7.6, Page 62)
7.5.3.4 Installing the back pull-out unit
ü
The notes and steps stated in (
ð
Section 7.5.1, Page 53) and
( ð Section 7.5.3.1, Page 58) to ( ð Section 7.5.3.3, Page 59) have been
observed/carried out.
ü Any damaged or worn parts have been replaced by original spare parts.
ü
The sealing surfaces have been cleaned.
1. If required, suspend or support the back pull-out unit to prevent it from tilting.
2. Insert casing wear ring 502.1 into volute casing 102.
3. Insert the back pull-out unit into volute casing 102.