Wilo -Stratos MAXO-D Einbau- Und Betriebsanleitung Seite 150

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NOTICE
The pump has an automatic venting system. During commissioning, the automatic pump
venting function of the pump can be put into operation. This vents the pump hydraulics. All
further pump adjustments can be made in parallel.
NOTICE
• Always keep to the minimum pressure!
• To avoid cavitation noises and damage, a minimum inlet pressure must be guaranteed at the suction port
of the pump. The minimum inlet pressure depends on the operating situation and the pump's duty point.
Accordingly, the minimum pressure must be determined.
• The main parameters for defining the minimum inlet pressure are the NPSH value of the pump at its duty
point and the vapour pressure of the fluid. The NPSH value can be found in the technical documentation of
the respective pump type.
NOTICE
When pumping from an open tank (e.g. cooling tower), ensure that there is always a suffi-
cient liquid level above the pump's suction port. The minimum inlet pressure must be ob-
served.
8.2 Flush
CAUTION
Property damage!
While using fluids with admixtures, property damage can occur due to the accumulation of
chemicals.
• Flush system before commissioning.
• Flush out the pump before pouring in, refilling or replacing fluid.
• Remove the pump before pressure swing purging.
• Do not perform any chemical flushes.
8.3 Procedure after switching on the power supply during initial commissioning
As soon as the power supply is switched on, the display starts. This process can take up to one minute. After
the start-up process has been completed, settings can be configured (see separate user manual* on the in-
ternet).
At the same time, the motor starts running.
*Separate user manual (see QR code at the beginning of these installation and operating instructions).
150 Installation and operating instructions • Wilo-Stratos MAXO/-D/-Z • Ed.01/2023-02