How It Works; Monitoring Devices; Operating Modes - Wilo Actun OPTI-QS Serie Instrucciones De Instalación Y Funcionamiento

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4.2.

How it works

The pump can be switched on and off using a DC switch that must be provided by
the customer. The separate switch means the power supply can be cut if required.
The pump need not be switched on or off manually. When the pump is switched on, it
operates autonomously and is controlled as well as monitored by the integrated elect-
ronics.
Connect the Wilo-QS Stop Module switchgear and additional accessories (float switch,
immersion cable) to implement functions such as maintaining the tank fill level at a
certain level.
After having switched on the power supply and as soon as the minimum voltage requi-
red to operate the motor has been generated, the frequency converter starts up the
pump. Depending on the available power provided by the solar panels, the frequency
converter generates the maximum available speed.
If the voltage drops below the required minimum value, the frequency converter swit-
ches off the pump.
4.3.

Monitoring devices

The pumps are equipped with the following monitoring devices:
• Undervoltage
• Overvoltage
• Excess current
• Temperature
• Dry-running protection with pre-wired water level sensor
These functions are implemented by the integrated electronics system and do not have
to be connected separately.
4.4.

Operating modes

Operating mode S1 (continuous duty)
The pump can operate continuously at the rated load without exceeding the permissible
temperature.
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PRODUCT DESCRIPTION
WILO SE 02-2019 DIN A5