7 Servicing/Maintenance
56 of 80
Vitacast / Vitacast Bloc
7. Undo the grub screws of mechanical seal 433.1. Remove the primary ring. To do
so, slide the primary ring off shaft 210.
8. Remove seal cover 471.
9. Remove the mating ring of mechanical seal 433.1 from seal cover 471.
10. Remove O-ring 412.4 from seal cover 471.
7.4.6 Removing the motor and bearings
Vitacast Bloc, installation
types K, M
ü
Pump casing, impeller and mechanical seal have been removed.
1. If applicable, undo hexagon socket head cap screws 900.2. Remove motor
shroud 683.
2. Undo hexagon socket head cap screws 914.5. Remove cover plate 81-92.
3. Undo hexagon head bolts 901.2 which secure motor 801.
4. Gently separate the shaft of motor 801 from pump shaft 210. Carefully remove
motor 801.
5. Undo hexagon socket head cap screws 914.3.
6. Remove drive lantern 341.
7. Remove the foot base if necessary.
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Installation type K:
Motors ≤ IEC 112: Undo nuts 920.3. Remove the foot base.
Motors > IEC 112: Undo nuts 920.3. Remove front of ball feet base 182.1.
Undo nut 920.2. Remove rear of ball feet base 182.2.
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Installation type M:
Undo nuts 920.5 and hexagon head bolts 901.3. Remove motor feet 81-23.
8. Gently pull thrower 507 off shaft 210.
9. Undo hexagon socket head cap screws 914.1.
10. Remove bearing cover 360.
11. Remove lubricating nipple 636, if any.
12. Press the assembly consisting of shaft 210, rolling element bearing 320.1 and –
for motor sizes IEC 160 and above – lip seal 421.1 out of bearing housing 350.
13. Undo nut 920.1. Remove lip seal 421.1.
14. Gently press shaft 210 out of rolling element bearing 320.1.
Vitacast Bloc, installation
type L
ü
Pump casing, impeller and mechanical seal have been removed.
1. If applicable, undo hexagon socket head cap screws 900.2. Remove motor
shroud 683.
2. Undo hexagon socket head cap screws 914.5. Remove cover plate 81-92.
3. Undo hexagon head bolts 901.2 which secure motor 801.
4. Gently separate the shaft of motor 801 from pump shaft 210. Carefully remove
motor 801.
5. Undo hexagon socket head cap screws 914.3.
6. Remove drive lantern 341.
7. Gently pull thrower 507 off shaft 210.
8. Remove joint ring 411.1 (V-ring).
9. Undo hexagon socket head cap screws 914.1. Remove bearing cover 360.
10. Pull shaft 210 including the entire bearing assembly out of bearing housing 350
at the drive end. To do so, apply some light pressure to the opposite (pump) end
of shaft 210 or gently tap shaft 210 with a rubber mallet. Take care not to
damage shaft 210.
11. Clean rolling element bearings 320.1/.2 with a degreasing agent. Check for any
damage.
12. If rolling element bearings 320.1/.2 need to be replaced:
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Undo nut 920.1.
