Replacing The Motor/Drive - Wilo Stratos GIGA Einbau- Und Betriebsanleitung

13.5

Replacing the motor/drive

13.5.1 Dismantling the electronic module
Installation and operating instructions • Wilo-Stratos GIGA, Wilo-Stratos GIGA B • Ed.01/2023-05
DANGER
Danger of death 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 commencing work, switch off the voltage in the unit, secure it
against being switched on again and wait 5 min.
• Check whether all connections (including potential-free contacts) are
voltage-free.
• Never poke around in the openings on the electronic module or insert
anything into them.
• Any damage to the pump connection cable should only ever be recti-
fied by a qualified electrician.
• Observe the installation and operating instructions for the pump, mo-
tor and other accessories.
• Reinstall any uninstalled safety devices, such as module covers, once
the work is complete.
DANGER
Danger of death due to contact voltage! Even when it is dis-
connected, high contact voltages can still occur in the elec-
tronic module due to non-discharged capacitors.
Touching live parts will result in serious injuries or death!
• Before working on the pump, interrupt the supply voltage and wait
5 min!
• 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!
DANGER
Risk of fatal electrical shock! Generator or turbine operation
during pump flow!
Even without the electronic module (without electrical connection),
there may be dangerous contact voltage at the motor contacts!
• Check for absence of voltage and cover or cordon off adjacent live
parts!
• Close the shut-off devices upstream and downstream of the pump!
NOTICE
The magnets inside the motor pose no risk to persons with pacemakers,
provided that the motor is not opened and the rotor is not dismantled.
The electronic module can be replaced without any risk.
1. Disconnect the system from the power supply and secure it against being switched on
again without authorisation.
2. Close the shut-off devices upstream and downstream of the pump.
3. Ensure system is voltage-free.
4. Earth the work area and short-circuit.
5. Disconnect the mains cable. If present, remove the cable for the differential pressure
sensor.
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