Removing The Pump Housing And Impeller; Removing The Seal Ring And Wear Ring; Removing The Shaft Seal; Assembling The Pump - Grundfos SL1 Instrucciones De Instalación Y Funcionamiento

10.2.2 Removing the pump housing and impeller

For position numbers, see pages 94 and 95.
Procedure
1. Loosen the clamp (pos. 92).
2. Remove the screw using your fingers.
3. Remove the pump housing (pos. 50) by inserting two screw-
drivers between the stator housing and the pump housing.
4. Remove the screw (pos. 188a). Hold the impeller with a strap
wrench.
Fig. 18 Removing the impeller
5. Loosen the impeller (pos. 49) with a light blow on the edge.
Pull it off.
6. Remove the key (pos. 9a) and the spring for impeller
(pos. 157).

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. 19 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.
24
Fig. 20 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 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).

10.3 Assembling the pump

10.3.1 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 917, product number 96001442 (1 l)
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