Wilo Stratos GIGA Série Notice De Montage Et De Mise En Service page 119

1
2
Fig. 51: Threaded holes and slots for press-
ing off the motor impeller unit from the
pump housing
Fig. 52: Wrench flats on the shaft
Installation
Installation and operating instructions Wilo-Stratos GIGA, Stratos GIGA-D, Stratos GIGA B
13. Press the motor impeller unit (see Fig. 13) off the pump housing.
NOTE:
When pressing out further, the motor impeller unit (see Fig. 13) must,
if necessary, be supported by lifting equipment to prevent possible
tipping (especially if no mounting bolts are used).
14. Release the two captive screws (Fig. 7, Item 18) and remove the
15. Put an open-end wrench (22 mm is the best width across flats) into
16. Depending on the pump type, loosed the screws (Fig. 7, Item 10)
17. Release the lantern by using the two-arm extractor (universal
1
18. Press the mechanical seal's stationary ring (Fig. 7, Item 17) out of
19. Carefully clean the seating areas of the shaft and the lantern.
NOTE:
For the following steps, observe the screw tightening torque speci-
fied for the respective thread type (see list "Table 11: Screw tighten-
ing torques" on page 115).
20. Clean the flange support and centring surfaces of the pump housing,
21. Insert a new stationary ring in the lantern.
22. Carefully push the lantern over the shaft and position it in the old
23. Push the new rotating unit of the mechanical seal (Fig. 7, Item 12)
Caution! Risk of property damage!
Danger of damage due to incorrect handling.
• The impeller is attached with a special nut whose assembly requires
a particular procedure described below. If the installation instruc-
tions are not observed, there is a danger of over-screwing the
It is a good idea to use two threaded holes (Fig. 51, Item 1) for this;
particularly to loosen the seating. Screw two suitable screws into
the threaded holes to loosen the seating. If the motor impeller
unit can be moved easily, slots (Fig. 51, Item 2) between the pump
housing and the lantern can also be used for pressing off (for
example, use two screwdrivers as levers to do this). After pressing
out about 15 mm, the motor impeller unit will no longer be guided
in the pump housing.
protective plate.
the lantern window and hold the shaft steady with the wrench sur-
faces (Fig. 52, Item 1). Unscrew the impeller nut (Fig. 7, Item 15).
The impeller (Fig. 7, Item 16) is automatically pulled off the shaft.
or alternatively, the screws (Fig. 50, Item 8).
extractor) from the motor centring device and pull it off the shaft.
The mechanical seal (Fig. 7, Item 12) will also be removed when
this is done. Prevent the lantern from being tilted.
the seat in the lantern.
lantern and motor flange to ensure proper positioning of the parts.
position or another desired angular position to the motor flange.
Observe the permitted installation positions of the components
when doing this (see chapter 7.1 "Permitted installations position
and change of the arrangement of components before the instal-
lation" on page 83). Attach the lantern with the screws (Fig. 7,
Item 10) or – for the pump/lantern types in accordance with
(Fig. 50) – with the screws (Fig. 50, Item 8) at the motor flange.
onto the shaft.
English
113