Notice
Incorrect operation of the frequency converter!
► Follow the manufacturer's instructions to install and operate a frequency
converter.
6.3.6.4 Checking the direction of rotation after connecting
Perform the following steps:
1.
Re-install all safety devices.
2.
Connect flushed mechanical seal for flushing or blocking medium (See
Section 6.3.5.3, Page 35)
3.
Check that hydraulic connections are firmly secured.
4.
Open stop valves.
5.
Fill the pump (system).
6.
Note the direction-of-rotation arrow on the pump.
7.
Switch on the motor briefly (1-2 seconds).
8.
Compare the direction of rotation with the specified direction.
9.
Correct the connection if necessary.
→ The direction of rotation has been checked, and corrected if necessary.
6.3.6.5 Earthing
Warning!
Electrical voltage by different potentials.
The occurrence of potential differences can cause damage to persons and
property.
► Properly earth the pump and motor to achieve potential equalisation.
Earth the unit
Equipotential bonding for the motor and pump is performed via the protective
conductor connection in the terminal box.
6.3.7 Operation Principle
Two precisely synchronised rotary pistons rotate in opposite directions. One in
the clockwise direction the other in the counterclockwise direction. Due to the
symmetrical shape of the rotors, the pump is suitable for operation in both
directions.
Assembly and installation
Setup, installation, and connection
BA.280.YYY.001.GB_4
21.02.2022 37
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