Impeller
Plastic star
Pump body
381332 ISS Q 11.95
13. Lay the plastic star against the impeller (fig. 13).
14. Fit the pump body (item 1a,1b) with the clamp ring (item 9a).
15. Push the shaft (item 11) forward until the impeller (pos 4) is
touching the plastic star (fig. 14).
16. Tighten the shaft screws. Remember to use the proper tightening
torque:
M8: 30 Nm (22 lbf ft)
M10: 55 Nm (41 lbf ft)
M12: 80 Nm (59 lbf ft)
M16: 180 Nm (132 lbf ft)
17. Remove the star by pulling it out through the inlet.
5.4 Recommended stocks of spare parts
Seal set
We recommend that you keep both seal kits and service kits for the
W+ pumps in stock. The seal kit for the W+ pump consists of the
wearing parts of the pump, as specified on page 42 - 43.
Service kit
The service kit is made up of a number of the main components of the
pump which are not wearing parts, but which you still may have to
replace: shaft, impeller, cap nut and fixing kit.
The table below shows the recommended stocks of spare parts for
normal operation and in cases where there are special needs - for
example 24-hour operation, operation with abrasive media, or
proces ses that are sensitive to even the shortest production stoppage.
Wearing parts (seal kit, see page 42 - 43)
Service parts (shaft, impeller, cap nut page 37, fixing kit page 40-41)
5. Maintenance
Fig. 13
Fig. 14
Normal operation
Special needs
0-5 5-20 > 20
No. of pumps in service
2
3 1
3 6 2
Sets Sets Sets/ 10 pumps
Normal operation
Special needs
0-5 5-20 > 20
No. of pumps in service
0
1 1
1
2 1
Sets Sets Sets/ 10 pumps
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