Operation; Before Switching On - Wilo Actun OPTI-MSH Einbau- Und Betriebsanleitung

COMMISSIONING
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 (main switch or DC switch, see Section 6.5). If the supply
voltage is available, the pump automatically switches on and off as per the operating
conditions.
7.3.3. After having switched on
Behavior during mains operation
After having switched on the power supply, the integrated frequency converter starts
up the pump to its maximum speed and the pump supplies at full power.
The rated current is briefly exceeded during the start-up procedure. Once the start-
up procedure has completed, the operating current may no longer exceed the rated
current.
If the motor does not start immediately after the pump is switched on, immediately
disconnect the power supply. The start pauses specified in the "Technical data" section
must be observed before starting up again. If the fault recurs, the unit must be switched
off again immediately. The pump must only be restarted once the fault has been
rectified.
Behavior under solar power supply
After having switched on the power supply and as soon as the minimum voltage re-
quired 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 switch-
es off the pump.
Installation and operating instructions Wilo-Actun OPTI-MS...
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