7 Servicing/Maintenance
62 of 80
Vitacast / Vitacast Bloc
7.5.3.6 Seal type Q, operating mode DB (Vitacast-Bloc)
CAUTION
The keyway could damage the seal faces and O-rings
Damage to the mechanical seal!
▷
Always handle seal faces with utmost care.
210
901.1
412.2
433.1
161
471
710.1
Fig. 26:
Installing the
mechanical seal
ü
The rolling element bearings have been properly installed.
ü
The general assembly drawing is available.
1. Insert the mating ring of mechanical seal 433.1 into seal cover 471.
2. Insert O-ring 412.2 into the groove in seal cover 471.
3. Place seal cover 471 on shaft 210. Slide it as far as possible towards the end of
shaft 210.
4. Slide the primary ring of mechanical seal 433.1 along the shaft.
A
Fig. 27:
Installation dimension A
5. Verify installation dimension A:
Correct values:
- Shaft diameter 20 mm - A = 11 mm
- Shaft diameter 28 mm - A = 8 mm
- Shaft diameter 43 mm - A = 20.5 mm
6. If distance A is correct, tighten the grub screw of the primary ring.
7. Press the mating ring of mechanical seal 433.1 into the rear side of casing cover
161.
8. Place casing cover 161 into drive lantern 341.
7.5.4 Fitting the impeller
101
230
161
210
922
412.3
940.1
551
433.1
Fig. 28:
Fitting the impeller for seal type H