9.2.2 Disassembling the electronic drive unit
To disassemble the electronic control unit attached to the pump, key steps must be followed in sequen-
tial order:
1. Disconnect the electrical cables.
2. Disconnect the pipes from the cooling circuit.
3. Remove the module.
Electrical cable disconnection
1. Stop the pump by sending a ‘STOP’ order (see chapter “Pumping shutdown”).
2. Switch off the pump by positioning the mains switch to ‘O’: the green LED turns off.
3. Switch off your main circuit breaker.
4. Disconnect the power cable from the electrical connector (see chapter “Connecting the cables”).
5. For a fixed electrical connection, disconnect the wires from the terminal block (see chapter “Elec-
trical connection”).
6. Disconnect all the connectors on the control interface.
7. Disconnect all cables from the solenoid valves and the heater jacket (if any).
Disconnecting pipes from the cooling system
1. Disconnect and remove all pipes between the pump and the electronic control unit, and the water
solenoid valve (if present).
2. Keep these items for the next use:
–
Do not return them to the service center.
Removing the module
1. Unscrew the 4 nuts on the studs as well as the 2 locking screws of the module on the pump.
2. Slide the module to disconnect the electrical connector.
3. Remove the module from the pump.
4. Secure the solenoid valve cables with screws on the module to prevent damage.
Maintenance
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