7 Servicing/Maintenance
54 of 80
Vitacast / Vitacast Bloc
7.4.5.2 Seal type H, operating modes B and I
551.1
161
230
433
Fig. 12:
Removing the
mechanical seal
ü
The pump casing and impeller have been removed.
1. Remove the primary ring of mechanical seal 433.1. Remove spacer discs 551 from
the mechanical seal.
ð
Turn the primary ring clockwise to remove it.
ð
Pull the seal assembly off the end of shaft 210.
2. Gently remove casing cover 161.
3. Press the mating ring of mechanical seal 433.1 out of casing cover 161.
7.4.5.3 Seal types T and H, operating mode BQ
901.1
421.2
161 412.4
471 710.1
433.1
Fig. 13:
Removing the
mechanical seal
ü
The pump casing and impeller have been removed.
1. Remove the primary ring of mechanical seal 433.1.
ð
Turn the spring clockwise.
ð
Pull spring and seal off shaft end 210.
2. Remove quench connection pipe 710.1, if applicable.
3. Gently remove casing cover 161.
4. Undo and remove 4 hexagon head bolts 901.1 of seal cover 471. Remove O-ring
412.4.
5. Press the mating ring of mechanical seal 433.1 out of casing cover 161.
6. Remove lip seal 421.2 from seal cover 471.
7.4.5.4 Seal type Y, operating mode J
710.2
161
433.1
Fig. 14:
Removing the
mechanical seal
ü
The pump casing and impeller have been removed.
1. Gently remove casing cover 161.
2. Press the mating ring of mechanical seal 433.1 out of the rear side of casing
cover 161.
3. Undo the grub screw in mechanical seal 433.1.
4. Remove the second part of mechanical seal 433.1.
ð
Turn the spring clockwise.
ð
Pull the spring together with the seal off shaft 210.
5. If applicable, remove pipe 710.2 for the flushing connection of casing cover 161
from drive lantern 341.