Electrical connection

Electrical connection may only be carried out by a qualified electrician and in accordance with the applicable regulations!

The “Safety information” section must be strictly observed!

DANGER

Risk of fatal electrical shock!

• Immediate risk of fatal injury if live components are touched!

• In particular, persons with medical aids, such as cardiac pacemakers, insulin pumps, hearing aids, implants or similar are at risk.
Death, severe injury and damage to property may be the result.
A professional medical assessment is always necessary for such persons!

• Failure to install safety devices (e.g. module cover of control module) can cause electrical shock, potentially resulting in life-threatening injuries!

• If setting and operating elements are improperly removed from the control module, there is a danger of electric shock if interior electrical components are touched!

• Applying an incorrect voltage to SELV lines will result in incorrect voltage in all pumps and on-site building automation devices that are connected to SELV lines. Risk of fatal injury!

• Reinstall all removed safety devices such as module covers!
• Only connect or operate the pump with the control module installed!
• Do not operate the pump if the control module/Wilo-Connector is damaged!
• Disconnect all poles of the supply voltage and secure against reconnection!
• Work on the control module may only be started after 5 minutes have elapsed, due to the dangerous residual contact voltage!
• Check whether all connections (including potential-free contacts) are voltage-free!

CAUTION

Material damage caused by improper electrical connection!

- An inadequate mains design can lead to system failures and cable fires due to mains overload!

- If the wrong voltage is applied, the pump can be damaged!

- Applying incorrect voltage to SELV lines will result in incorrect voltage in all pumps and on-site building automation devices, which are connected to SELV lines!

• When designing the mains supply with regard to the used cable cross-sections and fuses, pay special attention to the fact that, in multi-pump operation, it is possible that all pumps operate at the same time for short periods!
• When switching the pump on or off using an external control device, deactivate any mains voltage pulse (e.g. burst-fired control)!
• Check switching the pump via triacs/solid-state relays on a case-by-case basis!
• Make sure that SELV lines have a maximum voltage of 24 V!