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Rainman Technology Pty Ltd
49 Orchard Road
Brookvale, NSW 2100
Australia
www.rainmandesal.com
support@rainmandesal.com
Introduction
On rare occasions, it may be necessary to replace the salinity sensor board in the Rainman control panel. To avoid the need for calibration procedure, the board will come from the factory with a new probe that is precalibrated to the board. It is important to keep the sensor board and probe as a matching set or the calibration will be out.
Remove salinity sensor board
- Remove the two screws that secure the protective backing.
- Cut the zip tie that secures the salinity probe lead to the control panel.
- Remove the protective back cover to expose the salinity sensor board.
- Remove the salinity probe from the product water tee by pressing the ring in the tee and pulling the probe.
- Slide out the protective grommet from the control panel backing.
- Disconnect the two connections for the LED indicator and the salinity probe.Important: Note the orientation of each connector to ensure it slots in correctly upon reassembly.
- The grommet has a slit between two holes. Remove the salinity probe connector by pressing it through this slit.
- The black and red wires are the 10-32VDC input. The green and white wires are the 12VDC output to power relay in PSU. Remove all four of these wires, noting the positions of each one.
- Remove the four screws from each corner of the salinity sensor board and gently lift the board out of position. Note that these screws are stainless steel, so will not hold to a magnetic screwdriver.
Replace salinity sensor board
- Reverse the above steps to reinstall the salinity sensor board into the control panel.Important: Do not press the “Calib” button as it will reset the probe calibration. The board and probe are pre-calibrated at the factory.
- Insert the salinity probe by pressing it firmly into the product water tee fitting. Keep the small notch positioned away from the flow meter, as in the photo. This will ensure the two probe contacts are aligned with the product water flow.
