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Operating instrutions
WITA Delta Midi 40-XX | 60-XX
8.3 PWM emergency mode
If there is no PWM signal available, for example if the external PWM controller is
defective, you can operate the pump in emergency mode. This allows you to freely
set a fixed speed with an integrated speed controller. To access the speed controller,
you need to remove the housing cover. Unscrew the two Phillips head screws on the
cover to remove it.
Caution:
Circuit carries line voltage!
Switch off the line voltage prior to any interventions,
especially when installing jumpers! Disconnect the device plug.
To switch to emergency mode,
change the position of the jumper
on the PWM module to MAN. You
can now change the speed using the
speed controller R8.
9 Installation
Install the device with the power supply disconnected and with the pump motor lying
horizontally (the arrow on the pump housing shows the direction of flow) (Fig. 1).
When performing insulation work, ensure that the pump motor and the electronics housing are
not covered in insulation. If the installation location changes, you must rotate the motor
housing as follows (Fig. 2a to 2d):
• Unscrew the socket screw
• Rotate the motor housing
• Re-insert the socket screw and tighten
36
Fig. 1
Содержание Delta Midi 40 Series
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