7 Servicing/Maintenance
46 of 72
Vitachrom
Only use food-grade lubricants (e.g. water) for pumps used in hygienic food
applications.
Tightening torques
For reassembly, tighten all screws and bolts as specified in this manual.
7.5.2 Installing the mechanical seal
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.
ü
The notes and steps stated in (
ð
Section 7.5.1, Page 45) have been observed/
carried out.
ü
The assembled bearing as well as the individual parts are kept in a clean and
level assembly area.
ü
All disassembled parts have been cleaned and checked for wear.
ü
Any damaged or worn parts have been replaced by original spare parts.
Seal size: (
ð
Section 7.5.2.1, Page 47)
Material composition: (
ð
Section 7.5.2.2, Page 47)
ü
The sealing surfaces have been cleaned.
1. Clean the seat ring locations in discharge cover 163.01.
CAUTION
Elastomers in contact with oil/grease
Shaft seal failure!
▷
Use water as assembly lubricant.
▷
Never use oil or grease as assembly lubricant.
2. Carefully insert seat ring and second seat ring, if any.
Make sure that pressure is applied evenly.
3. Fit discharge cover 163.01 in the recess of drive lantern 341. Please note:
Single mechanical seal: Turn the discharge cover so that one of the quench
connection holes (R 1/8) points downwards.
Double mechanical seal: Fit the discharge cover so that the quench connections
are in horizontal position on both sides, and the quench lines can be connected
through the openings in the drive lantern.
4. Fit and tighten nuts 920.07, if any.
NOTE
Use water as a lubricant to reduce friction losses when assembling the seal.
5. Slip secondary mechanical seal, if any, on shaft 210.01.
6. Slip V-Ring 411.05, if any, on shaft 210.01.
7. Insert keys 940.01 into the shaft keyway.
8. Insert O-ring 412.03 in impeller.
9. Slip rotating assembly of the primary mechanical seal 433.01 onto impeller 230.
10. Slip impeller 230 onto shaft 210.01.
11. Insert O-ring 412.02 in impeller nut.
12. Fit and tighten impeller nut 922.
Summary of Contents for Vitachrom
Page 1: ...Hygienic Pump in Close coupled Design Vitachrom Installation Operating Manual ...
Page 68: ...Index 68 of 72 Vitachrom W Warnings 7 Warranty claims 6 ...
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