Operating instructions
9. Spare Parts, Spare Pumps
9.1 Spare parts
Spare parts should be selected to last for two-years continuous operation.
If no other guidelines are applicable, we recommend that you stock the number of parts listed
below (in accordance with VDMA 24296).
Number of pumps (incl. stand-by pumps)
2 3 4 5 6/7 8/9 10/more
spare part
number of spare parts
impeller
i
i
i
2i
2i
3i
30%
diffuser
i/2
i/2
i/2
i
i
3i/2
15%
wear ring-casing
2i
2i
2i
4i
4i
6i
30%
shaft with key and shaft screws/nuts
1
1
2
2
2
3
30%
bearing (roller bearing)
1
1
2
2
2
3
30%
shaft sleeve
2
2
2
3
3
4
50%
packing rings
16
16
24
24
24
32
40%
joints for pump casing sets
4
6
8
8
9
12
150%
other joints sets
4
6
8
8
9
10
100%
mechanical seal
2
3
4
5
6
7
90%
i=no. of steps
To ensure optimum availability, we recommend that suitable quantities of spare
parts are held in stock, especially if these are made from special materials and in
the case of mechanical seals, because of the longer delivery times.
Ordering spare parts
When ordering spare parts, please supply the following information:
•
Type: ________________________ Order no.: ________________________________
•
Part designation ______________________ in sectional drawing ________________________
All the information is given in the Data Sheet and the relevant sectional drawing.
9.2 Stand-by pumps
It is essential that a sufficient number of stand-by pumps are kept ready for use in
plants where failure of a pump could endanger human life or cause damage to
property or high costs. Regular checks should be carried out to ensure that such
pumps are always ready for use (see Point 6.2).
Please
note
Pa 100/3-en
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