Dismantling And Assembling The Product; Dismantling The Product - Grundfos SEG AUTOAdapt Service Instructions Manual

11. Dismantling and assembling the product

General information
Position numbers of parts (digits) refer to section
Position numbers of tools (letters) refer to section
tools.
Before dismantling the product
• Switch off the power supply.
• Close the isolating valves, if fitted, to avoid draining the piping
system.
• Disconnect the power supply cable in accordance with local
regulations.
• Note the centre of gravity of the pump to prevent it from
overturning.

11.1 Dismantling the product

11.1.1 Draining the motor oil
See section
10.3 Checking and changing the motor
11.1.2 Removing the grinder system
DANGER
Sharp element
Death or serious personal injury
- Be careful of the sharp edges on the impeller,
grinder head and grinder ring.
1. See section
11.1.1 Draining the motor
2. Place the pump horizontally on the table.
3. Loosen and remove the screw (188a) in one of the pump feet.
4. Loosen the grinder ring (44) by knocking it clockwise with a
punch (F). See fig. 9.
Dismantling the grinder ring
Fig. 9
5. Gently remove the grinder ring (44) from the pump housing
using a screwdriver (E).
Make sure that the grinder ring does not get stuck
against the grinder head.
6. Insert the punch (F) into the hole to hold the impeller to
prevent it from moving during dismantling.
7. Remove the screw (188a) from the shaft end. Remove the
locking ring (66). See fig. 10.
12
13. Drawings.
9. Service
8. Remove the grinder head (45).
11.1.3 Removing the pump housing
1. See section
oil.
2. Place the pump vertically.
3. Support the pump from the lifting bracket (190) with a hoist.
4. Loosen the clamp (92) holding the pump housing (50) and
5. Lift the pump housing (50) off the stator housing (55) including
6. Clean the pump housing (50).
oil.
11.1.4 Removing the impeller
1. See section
2. Insert the punch (F) in the impeller (49) to prevent it from
3. Remove the adjusting nut (68).
4. Fit the puller (A) on the shaft. See fig. 11.
5. Fit the M8 screw in the puller and pull out the impeller (49).
6. Remove the key (9a).
7. Clean the shaft and key.
Fig. 10 Dismantling the screw and grinder head
11.1.2 Removing the grinder
stator housing (55) together.
the O-ring (37) and the impeller (49). Place the pump
horizontally.
Clean the pump housing. Grind the surfaces slightly
with emery cloth, if necessary.
CAUTION
Sharp element
Minor or moderate personal injury
- Be careful of the sharp edges on the impeller and
the grinder head.
11.1.3 Removing the pump
moving during dismantling.
Fig. 11 Fitting the puller on the impeller
Clean the impeller. Grind the surfaces slightly with
emery cloth, if necessary.
system.
housing.