Changing The Oil - Grundfos SEG AUTOADAPT Montage- Und Betriebsanleitung

To check the shaft seal, proceed as follows:
1. Remove grinder ring (pos. 44).
See section 11.4 Replacing the grinder
2. Remove screw (pos. 188a) from the shaft end.
3. Loosen and remove clamp (pos. 92).
4. Lift the motor part out of pump housing (pos. 50).
The impeller and grinder head are removed
together with the motor part.
5. Remove grinder head (pos. 45).
6. Remove impeller (pos. 49) from the shaft.
7. Drain the oil from the oil chamber.
See section 11.8 Changing the
Used oil must be disposed of in
Note
accordance with local regulations.
Warning
When loosening the screws of the oil
chamber, note that pressure may have
built up in the chamber. Do not remove the
screws until the pressure has been fully
relieved.
The shaft seal is a complete unit for all pumps.
8. Remove screws (pos. 188a) securing shaft seal
(pos. 105).
9. Lift shaft seal (pos. 105) out of the oil chamber
according to the lever principle using the two
dismounting holes in shaft seal carrier (pos. 58)
and two screwdrivers.
10. Check the condition of the shaft where the
secondary seal of the shaft seal touches the
shaft. Bush (pos. 103) on the shaft must be
intact. If the bush is worn and must be replaced,
the pump must be checked by Grundfos or an
authorised service workshop.
If the shaft is intact, proceed as follows:
1. Check and clean the oil chamber.
2. Lubricate the faces in contact with the shaft seal
with oil (pos. 105a) (O-rings and shaft).
3. Insert the new shaft seal (pos. 105) using the
plastic bush included in the kit.
4. Tighten screws (pos. 188a) securing the shaft
seal to 16 Nm.
5. Fit the impeller. Make sure that key (pos. 9a) is
fitted correctly.
6. Fit pump housing (pos. 50).
7. Fit and tighten clamp (pos. 92).
8. Fill the oil chamber with oil. See section
11.8 Changing the oil.
For adjustment of impeller clearance, see section
11.4 Replacing the grinder
20
system.
oil.
system.

11.8 Changing the oil

Every 3000 operating hours or at least once a year,
change the oil in the oil chamber as described below.
If the shaft seal has been changed, the oil must be
changed as well. See section
replacing the shaft seal.
Draining of oil
Warning
When loosening the screws of the oil
chamber, note that pressure may have
built up in the chamber. Do not remove the
screws until the pressure has been fully
relieved.
1. Remove both oil screws to allow all the oil to
drain from the oil chamber.
2. Check the oil for water and impurities. If the shaft
seal has been removed, the oil will give a good
indication of the condition of the shaft seal.
Used oil must be disposed of in
Note
accordance with local regulations.
Oil filling, pump lying down
See fig. 16.
1. Place the pump in such a position that it is lying
on the stator housing and the discharge flange
and that the oil screws are pointing upwards.
2. Fill oil into the oil chamber through the upper hole
until it starts running out of the lower hole. The oil
level is now correct.
For oil quantity, see section
3. Fit both oil screws using the packing material
included in the service kit. See section
11.9 Service kits.
Oil filling, pump in upright position
1. Place the pump on a plane, horizontal surface.
2. Fill oil into the oil chamber through one of the
holes until it starts running out of the other hole.
For oil quantity, see section
3. Fit both oil screws using the packing material
included in the service kit. See section
11.9 Service kits.
Oil filling holes
Oil level
Fig. 16 Oil filling holes
11.7 Checking or
11.3 Inspection.
11.3 Inspection.