Operation Of The Pump In The Case Of External Flow; Maintenance; Product Life Cycle; Shutdown - Wilo Stratos PARA-C Einbau- Und Betriebsanleitung

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• Setpoint adjustment via analogue input 0 ... 10 V.
• Setpoint adjustment via pulse-width modulation (PWM).
• Setpoint adjustment at constant speed (not externally controlled).
8.3

Operation of the pump in the case of external flow

The pump can start and be operated in the case of positive external flow through (generator operation) with
up to 100 % of its maximum flow rate (e.g. pumps connected in series)
The pump can start and be operated in the case of negative external flow through (turbine operation) with
up to 30% of its maximum flow rate.
NOTICE
The pump may still be live even in voltage-free state. The driven rotor induces a voltage
within the pump.
9

Maintenance

WARNING
Danger due to strong magnetic field
Inside the motor, there is always a strong magnetic field that can cause personal injury and
material damage in the event of incorrect dismantling!
The magnetic field may cause death to persons with electronic implants (pacemakers, insulin
pump etc.)!
NOTICE
When it is being disassembled, the entire pump should always be dismantled from the sys-
tem. It is not permitted to remove the components (control module, motor head etc.)!
9.1

Product life cycle

The product is maintenance-free. Regular inspection every 12,000 h is recommended. The intended service
life is ten years, depending on the operating conditions and the fulfilment of all the requirements in the in-
stallation and operating instructions.
9.2

Shutdown

The pump must be shut down before carrying out maintenance, repair or dismantling work.
DANGER

Electric shock!

There is a risk of fatal injury from electric shock when working on electrical devices!
• Work on electrical components may only be carried out by qualified electricians!
58 Installation and operating instructions • Wilo-Stratos PARA-C/-CZ • Ed.01/2023-04