7.4.3.2.2.1 Using a special mounting and removal device
1. Screw hexagon head bolt 1 into the shaft end to prevent any damage to the
shaft thread.
2. Screw part 2 into the impeller.
3. Screw threaded bolt 3 into part 2 and pull off the impeller.
Table 22: Special mounting and removal device for removing the impeller
Size
Impeller type
Special mounting and
removal device
100-400
100-401
150-400
150-401
151-400
200-330
200-400
250-400
250-401
300-400
300-401
E, F, K
AV1
200-401
K
200-401
E
AV2
7.4.3.3 Dismantling the mechanical seal
Dismantle the mechanical seal in accordance with the general arrangement
drawings.
7.4.3.3.1 Dismantling the pump-end mechanical seal
✓
The back pull-out unit and the impeller have been removed as described above.
1. Pull the rotating assembly of mechanical seal 433.02 off shaft 210.
2. Remove discharge cover 163 from bearing bracket 330.
3. Push the stationary seat of mechanical seal 433.02 out of discharge cover 163.
7.4.3.3.2 Dismantling the motor-end mechanical seal
✓
The back pull-out unit and the impeller have been removed as described above.
1. Remove taper lock ring 515 or circlip 932.03.
2. Pull the rotating assembly of mechanical seal 433.01 off shaft 210.
7.4.3.4 Removing the wear plate
✓
The back pull-out unit has been separated from the pump casing.
✓
The inside of the casing has been cleaned.
✓
Result of visual inspection: The wear plate needs to be replaced.
1. On transportable models, separate the pump casing from the piping.
2. Undo hexagon socket head cap screws 914.12.
3. Remove wear plate 135.01 and O-rings 412.34.
3
2
1
Fig. 24: Special mounting
and removal device
914.12
135
101
Fig. 25: Removing the
wear plate
7 Servicing/Maintenance
48 of 78
Amarex KRT
Summary of Contents for Amarex KRT
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