Locating of the Pump Casing Upper Half
Prior to locating the pump casing upper half (part 1A) the casing gasket plate (part
73.1&73A) must be checked. It must be undamaged and clean, and its shape must
conform to that of the pump casing. Any gaps must be eliminated, particularly in the
areas where the gasket plate is in contact with other sealing areas, as gaps would
lead to leakage within the pump casing (casing wear rings and neck bushes).
For the same reason and this applies in particular to pumps with mechanical seal the
front faces of the gasket plates are cut to size after the pump casing upper half has
been screwed on to ensure that leakages are prevented on the gaskets of the
mechanical seal covers. Generally compressed asbestos fibre gasket of 1.0 mm
thickness will be provided as gasket plate. Mounting of the pump casing upper half in
accordance with figure. (see Instructions the flange screws).
Recommended Spare Parts
Spare parts should already be in stock at the client’s for the initial startup. In order to
minimize down-time we recommend to obtain one complete set of spare
parts.Complete rotor assembly, Set of wear rings, Set of bearings, Sets of complete
mech.seals, resp./ Stuffing box packings For normal operation of several pumps of
the same size we recommend a minimum storage according to VDMA
– rule 24 296,
sheet 1.The following VDMA instructions have been based on a 2 years, continuous
operation.
Spare parts
Number of pumps
(include Stand-by pumps)
2
3
4
5
6 & 7
8 & 9
10 & more
Number of Spare Parts
Impeller
1
1
1
2
2
3
30%
Case Wear ring
2
2
2
3
3
4
50%
Impeller wear ring
2
2
2
3
3
4
50%
Shaft with key & shaft
screws or nuts
1
1
2
2
2
3
30%
Bearings
1
1
2
2
3
4
50%
Shaft Protecting sleeve
2
2
2
3
3
4
50%
Thrower
1
1
2
2
2
3
30%
Packing rings
16
16
24
24
24
32
40%
Gaskets for pump
casing sets:
4
6
8
8
9
12
150%
Other gaskets sets:
4
6
8
8
9
10
100%
