How Do I Set Up My Mercury Water Level Sensor?

Step 1. Installing the Sensor in the Tank

1. Install the counterweight onto the cable. If the cable was extended by Commodore, the counterweight will already be on the cable.
2. Install the sensor, counterweight and cable into the Tank.

• It is recommended to:

• To drill a hole into the top of the tank for the cable to enter trough.
• Add a gland to the hole to precent pests, debris and other contaminants from entering the tank.
• That the sensor is no less than 1.5m away from the tanks outlet when it is in the down position. This is to prevent damage to the sensor.

1. Fix the counterweight in a position that will allow it to act as a pivot point between the pump start/stop positions.

• You can adjust the start condition by increasing the amount of cable that is available in the tank.
• You can adjust the stop condition by adjusting the counterweight’s position along the cable.

Step 2. Wiring the Sensor into the Pump Controller

1. Run the sensor cable to the pump controller. It is recommended that it be ran through a UV resistant conduit pipe to avoid damage from animals and the elements.
2. At the controller, run the cable through the sensor glad and into the controller.
3. Bare the Black and Brown/Red wires and connect them to the TC and TH terminals on the pump controller’s circuit board. There is no polarity to the wiring, so either wire can go on either terminal.
   • Wiring Summary:

• TC = Black or Brown/Red
• TH = Brown/Red or Black
• Blue = Not used
• No polarity sensitivity

1. Confirm Correct Operation

1. Start the pump - Turn the system on and ensure water is flowing to the tank.
2. Simulate a full tank - This can be done manually by hold the float in the up position.
3. Observe the system - With the sensor raised, the Tank Full light should turn red, and the pump should then begin to slow down and stop.
4. Troubleshooting - If the Tank Full light does not turn red and the pump does not begin to slow, make sure that the Black and Brown/Red wires are on the TC and TH terminals.
5. Restore flow - Once the Tank Full light has turn red and the pump has stopped, lower the sensor towards the ground so the Tank Full light turns off. The pump will then restart, and the water should begin flowing again.

CONCLUSION

• Confirm correct wiring to TC and TH terminals.
• Check for cable strain or obstructions affecting float angles.
• Check the orientation of the sensor at both the high and low points.

Contact Commodore Australia’s Technical Support team for further assistance.

Phone 1300 669 256 or email support@commodoreaustralia.com.au