Pwm Emergency Mode; Installation - WITA Delta Maxi 80 Série Traduction Des Instructions De Service D'origine

Operating instrutions
WITA Delta Maxi 80-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

Fig. 1
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
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