KSB HPK-L, Installation & Operating Manual

Page: 57 / 74

7 Servicing/Maintenance
57 of 74
HPK-L
1136.8/15-EN
NOTE
Only remove the protective wrapping of the seal faces immediately before assembly
takes place.
1. Versions with two mechanical seal in tandem arrangement: Insert the mating
ring of the second mechanical seal into mating ring carrier 476.02 and slide both
onto the shaft from the pump end.
2. Versions with mechanical seals in tandem arrangement: Slide the primary ring
onto the shaft until it reaches the shaft shoulder. Secure it with a grub screw.
3. Insert the mating ring and the secondary seals of the mechanical seal into
mating ring carrier 476 and slide them onto the shaft from the pump end.
4. Slide the rotating components of the mechanical seal (torque-transmitting
element, springs, primary ring, secondary seal, etc.) onto shaft sleeve 523 as a
complete sub-assembly. Slide this sub-assembly on until it will not go any
further. Then lock it with the grub screws.
5. For LP02 and LP03: Slide shaft sleeve 523 onto shaft 210.
The shaft sleeve is correctly positioned on the shaft when its pump-end face
("2" see Fig. "Installing the mechanical seal") is aligned with the mark on the
shaft ("1" see Fig. "Installing the mechanical seal"). Guide O-ring 412.07 and
support disc 550.59 carefully along the shaft and press them into the recess of
shaft sleeve 523.
For LP04, LP05 and LP06: Insert O-ring 412.07 into shaft sleeve 523. Carefully
guide the shaft sleeve along the shaft.
On shafts without marking, align the shaft sleeve with the shaft shoulder (see
Fig. "Installing the mechanical seal").
6. Screw in grub screws 904.32 by several turns to hold the support disc in place.
7. Firmly tighten all grub screws 904.32.
8. Verify the correct axial position of shaft sleeve 523 and mechanical seal 433.02
on shaft 210.
CAUTION
Incorrect position of the mechanical seal
Hot fluid or steam may spurt out during operation!
▷ Make sure the mechanical seal is seated properly.
7.5.4 Fitting the plain bearing bush
ü The notes and steps stated in ( ð Section 7.5.1, Page 53) to
( ð Section 7.5.3, Page 55) have been observed/carried out.
1. If bearing bush 545.21 is replaced with a new one, a new tolerance ring 500.61
must be fitted in the corresponding groove of the bearing bracket.
CAUTION
Incorrect position of the bearing bush
Excessive bearing load during operation!
▷ Check that the groove is positioned correctly.
2. Swiftly and evenly press bearing bush 545.21 into the bearing bracket. (Risk of
fractures: do not subject it to any blows.) Check that the groove of the bearing
bush is positioned correctly. The bearing bush is inserted correctly when its
groove is on top (12 o’clock position).
3. Insert ring 932.05 into the groove of the bearing bracket to secure the bearing
bush axially.