Replacing The Run Capacitor, Single-Phase Pumps; Replacing The Sensors - Grundfos SEG AUTOAdapt Service Instructions Manual

11.3.2 Replacing the electronic unit
1. See section
11.3.1 Opening the electronic unit
2. Remove the wires of the dry-running sensor, Pt1000 sensor
and capacitor (single-phase pumps) as well as the earth lead.
3. Cut the motor leads between the electronic unit and the stator
housing in the middle.
4. Remove the level sensor (see section
sensor) and the cable plug (see section
level
plug) from the old electronic unit and fit them in the
the cable
new one.
5. Remove approximately 60 mm of the insulating sheath of the
cable from the new electronic unit so that approximately 75
mm of the three leads are stripped.
6. Cut away 5, 30 and 55 mm of the three leads from the
electronic unit and from the stator housing so that the joints
are displaced from each other. See fig. 19. For instance, if 5
mm of the red lead from the electronic unit are cut away, 55
mm of the red lead from the stator housing must be cut away.
Fig. 19 Leads with connectors
7. Strip the three leads from the electronic unit and from the
stator housing using a cable stripper.
Do not use side-cutting pliers due to the risk of
pulling the leads out of the stator housing.
8. Pull a new 16 mm insulation sheath over the original
insulating sheath of the motor leads. See fig. 20.
Fig. 20 Insulating sheath on the three leads
9. Pinch connectors on the three leads with a crimping tool.
The leads must be connected in such a way that the
colours from the electronic unit and the stator
housing match.
16
10. Grab the leads on each side of the connector and pull a little
11. Carefully pull the new insulating sheath over the joints and fix
12. Connect the wires from the dry-running sensor, Pt1000 sensor
13. Fit the electronic unit. See section
11.5.2 Replacing the
11.6 Replacing
11.3.3 Closing the electronic unit
1. Lubricate the O-ring (90b) and the contact surfaces of the
2. Fit the O-ring in the stator housing.
3. Place the wires in the hollow space and fit the electronic unit
4. Fit the four screws (188a). See section

11.4 Replacing the run capacitor, single-phase pumps

11.4.1 Dismantling the run capacitor
1. Open the electronic unit. See section
2. Disconnect the capacitor wire from the electronic unit.
3. Remove the Pt1000 plug from the PC board.
4. Remove the earth lead from bracket (161c).
5. Remove the capacitor bracket with capacitor from the stator
11.4.2 Assembling the run capacitor
1. Fix the capacitor wire on the PC board.
2. Fit the earth lead on the new bracket.
3. Fit the new Pt1000 sensor.
4. Fit the electronic unit. See section

11.5 Replacing the sensors

11.5.1 Replacing the dry-running sensor
Observe the bar code on the sensor wire, for example 96892923-
01-039-01192. In case the bar code contains the figure 01,
replace the sensor with a new one, version 02.
Dismantling the dry-running sensor
1. Open the electronic unit. See section
2. Remove the sensor wire from the PC board.
3. Remove the set screw (285b).
4. Press the sensor out of the stator housing with a screwdriver
5. Clean the sensor hole.
Assembling the dry-running sensor
1. Lubricate and fit the O-rings (285a).
2. Lubricate the sensor hole.
3. Press the sensor home in the stator housing.
4. Connect the sensor wire to the PC board.
5. Fit a new set screw. See section
6. Fit the electronic unit. See section
to check the joints.
it with a cable clip.
and capacitor (single-phase pumps) as well as the earth lead.
electronic unit.11.3.3 Closing the electronic
stator housing and the electronic unit.
on the stator housing.
Make sure that the wires are not pinched between
the stator housing and electronic unit.
lubricants.
electronic unit.
housing.
electronic unit.
electronic unit.
(E). Do not reuse the sensor.
electronic unit.
11.3.2 Replacing the
unit.
8. Torques and
11.3.1 Opening the
11.3.3 Closing the
11.3.1 Opening the
8. Torques and lubricants.
11.3.3 Closing the