Assembling The Pump; Tightening Torques And Lubricants; Fitting The Shaft Seal; Fitting The Seal Ring And Wear Ring - Grundfos SL1 Manual De Instrucciones

11.3 Assembling the pump

11.3.1 Tightening torques and lubricants

Desig-
Pos. Quantity Dim.
nation
92a Screw 1
M8
118a Screw 2
M10
174 Screw 1
7-pole 36.88 ± 3.7 (50 ± 5)
181 Union nut 1
10-pole 55.32 ± 3.7 (75 ± 5)
186 Screw 2
182 Screw 4
187 Screw 4
M8
188 Screw 2
M10
M10
188a Screw 2
M12
193 Screw 2
O-rings All
Rocol Sapphire Aqua-Sil, product number RM2924 (1 kg).
Shell Ondina X-420 oil product No 96586753 (1 l)
Alternative:
Exxon Mobile Marcol 82 product number 98703313 (1 l)
JAX oil WMO 22 product number 98836788 (1 l)

11.3.2 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
and fig. 13. This is of special importance in
the WIO sensor
horizontal pumps.
7. Fit the cover for oil chamber.
8. Fit and tighten the screws (pos. 188).

11.3.3 Fitting the seal ring and wear ring

Procedure
1. Lubricate the seal ring (pos. 46) with soapy water.
2. Place the seal ring in the pump housing.
3. Knock the seal ring home in the pump housing using a punch
or a wooden block.
24
Torque Lubri-
[ft-lb (Nm)] cant
8.85 ± 1.5 (12 ± 2)
14.75 ± 1.5 (20 ± 2)
22.15 ± 2.2 (30 ± 3)
2.95 ± 0.74 (4 ± 1)
5.2 + 1.5-0 (7+2-0)
14.75 ± 1.5 (20 ± 2)
14.75 ± 1.5 (20 ± 2)
14.75 ± 1.5 (20 ± 2)
22.13 ± 2.2 (30 ± 3)
36.88 + 3.7-0
(50+5-0)
55.32 ± 3.7 (75 ± 5)
11.8 ± 1.5 (16 ± 2)
Rocol
9.4.1 Fitting
Fig. 23 Fitting the seal ring
4. Place the wear ring (pos. 49c) on the impeller.
5. Knock the wear ring home using a wooden block.
Fig. 24 Fitting the wear ring

11.3.4 Fitting the impeller and pump housing

Procedure
1. Fit the spring (pos. 157) and the key (pos. 9a).
Keep the key in position while the impeller is fitted.
2. Fit the impeller (pos. 49).
3. Fit the washer (pos. 66) and the screw (pos. 188a).
4. Tighten the screw (pos. 188a) to 55 ft-lb (75 Nm).
Hold the impeller with the strap wrench.
5. Mark the position of the pin on the pump housing.
6. Mark the position of the pin hole on the oil chamber.
7. Fit and lubricate the O-ring (pos. 37) with oil.
8. Fit the stator housing in the pump housing (pos. 50).
9. Fit the clamp (pos. 92).
10. Tighten the screw to 9 ft-lb (12 Nm).
11. Check that the impeller rotates freely and without drag.