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10.6.3
Installing the electronic module
Installation, module 1.5 ... 7.5 kW
1
Fig. 59: Electronic module – motor connection
Installation, module 11 ... 22 kW
62
Maintenance/repair
DANGER
Risk of fatal injury due to electrical current!
Improper conduct when carrying out electrical work can lead to death due to electric
shock!
• Any work on electrical devices may only be carried out by a qualified electrician.
• Before carrying out any work, disconnect the unit from the power supply and
secure it against accidental switch-on and wait 5 minutes.
• Check whether all connections (including potential-free contacts) are voltage-
free.
• Never poke around in the openings of the electronic module or insert anything
into them!
• Any damage to the pump connection cable should only ever be rectified by a
qualified electrician.
• Observe the installation and operating instructions for the pump, motor and
other accessories!
• Reinstall any uninstalled safety devices, such as module covers, once the work is
complete!
1. Earth the work area and short-circuit. Disconnect the mains cable. If present, re-
move the cable for the differential pressure sensor.
2. Fit the new O-ring between the electronic module and the motor on the contact-
ing chamber.
3. Press the electronic module vertically downwards into the contact of the motor
and fasten with screws and the tooth lock washers (Item 1).
4. Remove the module cover.
1
5. Connect the mains cable.
6. If present, connect the differential pressure sensor cable.
7. For all other cable connections, see the "Electrical Connection" section.
8. Carefully close and tighten the module cover.
9. For cable connections and securing the module cover, please also see the "Screw
tightening torques for electronic module" table.
Ensure that no drips can run into the electronic module:
ƒ
Bend the cables into a drain loop near the threaded cable gland
ƒ
Unused cable glands should be sealed with the sealing washers provided and
screwed tight.
CAUTION
Risk of material damage if the electronic module is not installed!
Normal operation of the pump is only permitted with the electronic module in-
stalled!
The pump must not be connected or operated without the electronic module being
installed!
NOTICE
The electronic module must be dismantled and installed according to the
instructions enclosed with the spare part!
WILO SE 2020-10
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