Switching On The Pump - Wilo Atmos TERA-SCH Serie Einbau- Und Betriebsanleitung

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7.4

Switching on the pump

30
Commissioning
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Remove coupling guard.
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To check the direction of rotation, disengage the pump from the coupling.
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Switch the motor on briefly. The direction of rotation of the motor must correspond
to the direction of rotation arrow on the pump.
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If the direction of rotation is wrong, change the electrical connection of the motor.
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Connect the pump to the motor after ensuring the correct direction of rotation.
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Check the alignment of the coupling and realign it if necessary.
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Reinstall the coupling guard.
CAUTION
Risk of property damage!
• Do not operate the pump with the shut-off devices closed.
• Only operate the pump within the permissible operating range.
Once all preparatory work has been properly completed and all necessary precautionary
measures have been taken, the pump is ready to start.
Before starting up the pump, check whether:
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Filling and ventilation lines are closed.
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The bearings are filled with the right amount of lubricant of the right type (if applic-
able).
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The motor is turning in the right direction.
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The coupling guard is attached correctly and is screwed tightly.
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Pressure gauges with a suitable measurement range are installed on the suction and
pressure side of the pump. Do not install the pressure gauges on the bends in the
piping. The kinetic energy of the fluid can affect the measured values at these
points.
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All blind flanges are removed.
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The shut-off device on the suction side of the pump is completely opened.
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The shut-off device in the pressure pipe of the pump is completely closed or only
slightly opened.
WARNING
Risk of injury due to high system pressure!
The power and status of the installed centrifugal pumps must be constantly mon-
itored.
• Do not connect pressure gauges to a pressurised pump.
• Install pressure gauges on the suction and pressure side.
NOTICE
It is recommended to attach a flow meter to determine the exact pump delivery rate.
CAUTION
Risk of property damage due to motor overload!
• To start up the pump, use the soft start, star-delta connection or speed control.
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Switch on the pump.
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After reaching the speed, slowly open the shut-off device in the pressure pipe and
regulate the pump to the duty point.
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While the pump is starting, vent completely via the venting screw.
WILO SE 2020-10