Wilo Actun OPTI-QS Series, Installation And Operating Instructions Manual

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72 WILO SE 02-2019 DIN A5
English COMMISSIONING
7.2.1. Venting the pump and piping (for closed pipe systems)
• Open all slide valves in the pressure pipe.
• Switch on the power supply (main switch or DC switch, see Section 6.5). Depending
on the available supply voltage (mains operation or solar power supply) the pump now
operates at maximum delivery rate.
The air escapes through the corresponding air vent valves. If air vent valves have not
been installed, check the taps so the air can escape here!
• Once the pump and pipe system have been vented, once again disconnect the pump
from the power supply and close any potentially open taps.
7.3. Operation
7.3.1. Before switching on
Check the following prior to switching on the submersible pump:
• Proper and secure cable routing (e.g. no loops)
• Firm fit of all components (pump, piping, etc.)
• Operating conditions:
• Fluid temperature
• Immersion depth
• Open all the gate valves in the pressure pipe. The pump must not be switched on when
the slide valves are throttled or closed.
7.3.2. Switching on
• Switch on the power supply (DC switch, see Section 6.5). If the supply voltage is availa-
ble, the pump automatically switches on and off as per the operating conditions.
7.3.3. After having switched on
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.
7.4. Conduct during operation
When operating the pump, always follow the locally applicable laws and regulations for
work safety, accident prevention, and handling electrical machinery. Operators must
clearly specify staff activities to guarantee safe operating processes. All personnel is
responsible for ensuring that regulations are observed.
The pump is equipped with moving parts. During operation, these parts rotate in order
to pump the fluid. Certain substances in the fluid can result in very sharp edges forming
on the moving parts.