Instruction manual V 2.3
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PWM 230 - PWM 400 - PWM 400/7.5
Instruction manual
Wrong setting of the electro pump’s rated frequency may irreparably damage the
electro pump.
c) Setting the direction of rotation.
From “Fn” parameter, press the
key once. The current and frequency settings are activated and
the current parameter becomes “rt”; the PWM is now operating.
Open a user to make the pump start rotating. Check direction of rotation of the electro pump.
If the direction is correct, you may proceed setting the set-point pressure (point d), otherwise reverse the
direction of rotation of the motor with the
and
keys (this function is active also when the
motor is turned on). An arrow on the electro pump’s motor case is generally used to indicate direction of
rotation.
When it is not possible to directly observe the direction rotation of the motor, this can be found by one of
the following methods:
Maximum head method
- Press
the
key in order to get to the normal display menu ("Go" or "Sb" is displayed, provided that
no errors or lock conditions are present).
- Enter manual mode menu by holding the
keys simultaneously pressed until “MA”
appears on display (see chap. 7).
-
Start-up the pump by pressing
at the same time for 2 seconds and take note of the
pressure. (if no manometer is available, you may display the “UP” parameter value by pressing the
key multiple times)
- Revert the running rotation by holding
and
pressed for 2 seconds and take note of the
pressure again.
The direction of rotation that allows obtaining a higher pressure is the right one.
- Press
to stop rotation and press it a second time to exit from manual mode menu.
Rotation frequency “Fr” observation method
- Press
the
key in order to get to the normal display menu ("Go" or "Sb" is displayed, provided that
no errors or lock conditions are present).
-
Open a user and take note of the frequency (press the
key, so that "Fr" and the frequency value
are displayed alternatively).
- Change the ”rt” parameter (as described above) without changing the drawing and take note of the
frequency Fr again.
The rt value that corresponding to the lower rotation frequency (Fr) is the right one.
