3. Wiring Diagrams
PNEG-1186 Smart-Flex (FLX-4629) Operation Instructions 17
Extension Mode
The Smart-Flex can be configured without the proximity sensor to control the Flex-Flo fill auger of an
extension system. To use in extension mode without the proximity sensor, add a jumper wire connected
to the terminals in the lid marked “Sensor +V” and “Ext. Mode”. (See Figure 3D.) In this configuration, the
pressure switch will operate without setting off or sounding the alarm.
Figure 3D Wiring Diagram for Extension Mode