Grundfos SL1 Serie Montage- Und Betriebsanleitung Seite 20

10.2.3 Removing the seal ring and wear ring
Procedure
1. Turn the pump housing upside-down.
2. Knock the seal ring (pos. 46) out of the pump housing using a
punch.
Fig. 18 Removing the seal ring
3. Clean the pump housing where the seal ring was fitted.
4. Remove the wear ring (pos. 49c) using a screwdriver.
Fig. 19 Removing the wear ring
5. Clean the impeller where the wear ring was fitted.
10.2.4 Removing the shaft seal
Procedure
1. Remove the screws (pos. 188).
2. Remove the cover for oil chamber (pos. 58) using a puller.
3. Remove the screws (pos. 186).
4. Remove the shaft seal (pos. 105) using the puller.
5. Remove the O-ring (pos. 153b).
Procedure (pump with WIO sensor)
1. Remove the screws (pos. 188).
2. Remove the cover for oil chamber (pos. 58) using a puller.
3. Remove the screws (pos. 186).
4. Remove the sensor (pos. 521) and holder (pos. 522) from the
shaft seal.
5. Remove the shaft seal (pos. 105) using the puller.
6. Remove the O-ring (pos. 153b).
20
10.3 Assembling the pump
10.3.1 Tightening torques and lubricants
Pos. Designation Quantity
92a Screw 1
118a Screw 2
174 Screw 1
181 Union nut 1
186 Screw 2
182 Screw 4
187 Screw 4
188 Screw 2
188a Screw 2
193 Screw 2
O-rings All
Rocol Sapphire Aqua-Sil, product number RM2924 (1 kg).
Shell Ondina 919, product number 96001442 (1 l)
10.3.2 Fitting the shaft seal
Procedure
1. Fit and lubricate the O-ring (pos. 153b) with oil.
2. Slide the shaft seal (pos. 105) gently over the shaft.
3. Fit and tighten the screws (pos. 186).
4. Fit and lubricate the O-ring (pos. 107) in the cover for oil
chamber (pos. 58) with oil.
5. Fit the cover for oil chamber.
6. Fit and tighten the screws (pos. 188).
Procedure (pump with WIO sensor)
1. Fit and lubricate the O-ring (pos. 153b) with oil.
2. Slide the shaft seal (pos. 105) gently over the shaft.
3. Fit the holder (pos. 522) and sensor (pos. 521) with one of the
screws (pos. 186).
4. Fit the second screw and tighten both screws (pos. 186).
5. Fit and lubricate the O-ring (pos. 107) in the cover for oil
chamber (pos. 58) with oil.
6. Check that the sensor is positioned correctly. See section
8.4.1 Fitting the WIO sensor
importance in horizontal pumps.
7. Fit the cover for oil chamber.
8. Fit and tighten the screws (pos. 188).
Torque
Dim. Lubricant
[Nm]
12 ± 2
M8 20 ± 2
M10 30 ± 3
4 ± 1
7-pole 50 ± 5
10-pole 75 ± 5
7 + 2-0
20 ± 2
20 ± 2
M8 20 ± 2
M10 30 ± 3
M10 50 + 5-0
M12 75 ± 5
16 ± 2
Rocol
and fig. 10. This is of special