Assembling - Grundfos SE1 50 Series Service Instructions Manual

9.4.10 Removing the stator
This work must be carried out by Grundfos or an Ex-
approved service centre.
1. See section 9.4.9 Removing the stator housing.
2. Remove the pin housing (176), using the pin pusher (B).
3. Remove the plug protector (177), using the multiplug pliers
(C).
4. Remove the screw (173) and the washer (173a).
5. Remove the upper bearing cover (61) from the stator housing
(55).
6. Block up the stator housing (55) so that it stands on the flange
at a height where the stator can come out underneath.
7. Heat the stator housing (55) until the stator (48) drops out.
Heat the stator housing uniformly so that it is not deformed.
When using a gas burner, heat up to approximately 200 °C.
When using a pre-heated oven, heat up to approximately 300
°C.

9.5 Assembling

For position numbers, see section 12. Drawings.
Except for replacement or dismantling of pump
housing, shaft seal, impeller, seal ring and wear ring,
all other service work must be carried out by
Grundfos or an Ex-approved service centre.
9.5.1 Fitting the stator
This work must be carried out by Grundfos or an Ex-
approved service centre.
1. Place the stator (48) on the stator guide (A) with the wire end
upwards. See fig. 16 and fig. 17.
Fig. 16 Stator guide
2. Tie together the wires with a steel wire.
3. Fit the upper bearing cover (61) to the stator housing (55) with
a screw (183) and washer (183a).
4. Place the stator housing (55) on the stator (48), and run the
wires through the stator housing. See fig. 17.
16
Installation dimensions:
B: 84.8 ± 0.75 mm
C: 97.0 ± 0.75 mm
D: 103.0 ± 0.75 mm
55
48
Installation
dimensions
Stator guide
Fig. 17 Installing the stator housing
5. Make sure that the stator housing is placed so that the bore
for plug is turned 45 ° in relation to the point where the wires
leave the stator. See fig. 18.
Fig. 18 Position of stator in relation to the stator housing
6. Heat the stator housing (55) to 200 °C (maximum 240 °C) until
the stator housing slides down on the stator.
Heat the stator housing uniformly so that it is not deformed.
Make sure that the wires are not pinched, and that the bottom
flange of the stator housing touches the stator guide (A).
7. Check the installation dimensions. See fig. 16.
8. Let the stator housing (55) cool down.
9. Fit the protective conductor (green and yellow) with the screw
(173) and washer (173a).
10. Fit the pin housing (176) and the plug protector (177). See
section 12.5 Electrical data.