Grundfos SE 9-30 kW Service Manual page 33

2. Find the wire marked "MS1" and separate it from the bundle of
wires. Push the bundle of wires underneath the bracket and
through the right-hand side legs of the bracket. The MS1 wire
should still be in front of the terminal block, as this wire is
connected directly to the moisture sensor.
3. Push the sensor wires into the the male connector or WAGO
connector according to the wiring diagram. Close the connector
and check the tightness of the connection by pulling the wires
back.
4. Attach the two connectors.
5. Secure the joined connectors to the cable bracket with a cable
tie. Keep 5 ± 1 mm (0.196 ± 0.039 in) in between the bottom of
the connector and the bracket.
6. Ensure that the connector is below the cable clamp screw.
7. Fix the sensor wires from the power cable onto the bracket with
a cable tie. Use the dedicated cutout on the bracket.
8. Insert the sensor wires between the connector and the WAGO
according to the wiring diagram.
9. Mount the WAGO onto the "leg" of the bracket by a cable tie.
Position the wago connector as low as possible on the bracket
leg.
10. Connect the sensor wires into the moisture switch. The MS2
wire is connected to the terminal at the back of the moisture
switch. The MS1 wire is connected to the other terminal, see the
wiring diagrams.
11. Tighten the sensor wires from the motor in front of the bracket
by a cable tie. The cable tie should be approximately in line with
the end of the terminal block.
12. Tie the sensor wires from the motor together aside of the
bracket with a cable tie. The cable tie should be approximately
half way between the two legs of the brackets.
13. Secure the cable earth connection to the stator housing. Ensure
that the serrated washer is underneath the cable lug. A
minimum of 8 mm (0.314 in) distance is necessary between any
wiring and the stator housing. Make sure that the earth cable is
not within 8 mm (0.314 in) of the stator housing wall.
Related information
17. Wiring and sensor information
33