KSB Etachrom NC, Installation & Operating Manual

Page: 46 / 62

6. Fit keys 940.1.
7. Pull the coupling half onto the drive-end shaft stub.
8. Secure the coupling hub with a socket head cap screw.
7.5.3 Installing the mechanical seal
The following rules must be observed when installing the mechanical seal:
▪
Work cleanly and accurately.
▪
Only remove the protective wrapping of the contact faces immediately before
installation takes place.
▪
Prevent any damage to the sealing surfaces or O-rings.
✓
The notes and steps stated in
(⇨ Section 7.5.1 Page 44)
to
(⇨ Section 7.5.2 Page
45)
have been observed/carried out.
✓
The bearing assembly as well as the individual parts are kept in a clean and level
assembly area.
✓
All dismantled parts have been cleaned and checked for wear.
✓
Any damaged or worn parts have been replaced by original spare parts.
✓
The sealing surfaces have been cleaned.
1. Clean shaft sleeve 523 or shaft 210, and touch up any score marks or scratches
with a polishing cloth.
If the score marks or scratches are still visible, replace shaft sleeve 523 and/or
shaft 210.
2. Push shaft sleeve 523 (if any) onto shaft 210 with new gasket 400.1.
3. Clean the seat ring location in discharge cover 163.
CAUTION
Elastomers in contact with oil/grease
Shaft seal failure!
▷
Use water as assembly lubricant.
▷
Never use oil or grease as assembly lubricant.
4. Carefully fit the stationary ring of the mechanical seal.
Make sure to apply pressure evenly.
NOTE
Fit the double PTFE encapsulated O-ring with the joint of the outer sheath pointing
outwards.
1773:16/4
Fitting direction
1
Fig. 16: PTFE encapsulated O-ring
1 Joint of the outer PTFE sheath
5. Fit discharge cover 163 into the locating fit of bearing bracket 330 or
intermediate piece 132.
Fitting the
mechanical seal
7 Servicing/Maintenance
46 of 62 Etachrom NC