Main Screen

Main Screen

  • CO₂ Mode has 2 modes: Manual/Auto
    • Manual allows the user to manually control CO₂ injection into the system to lower pH. You can press the ON/OFF button to control it via the touchscreen or the app.

Manual mode should be used with caution. Even if the pool pump is off, the user can still open the valve to inject CO₂ into the system. If the pump is running and CO₂ injection is left on for too long or forgotten, the pool water pH could drop below 7.2.

  • Auto is the primary mode for actual use. In this mode, Elxense monitors the pH value to check if it's within the configured range (configurable at pH Range Settings). If pH rises above the configured range, it will start injecting CO₂ to lower the pH.

  • pH is a bar displaying the current pH value. The green range is pH 7.2-7.6, which is the recommended range suitable for all pool systems, as this pH range maximizes sanitizer effectiveness.

pH 7.2–7.6 is the "sweet spot" that balances 3 things: swimmer comfort/safety, sanitizer effectiveness, and water/equipment protection (no corrosion, no scale buildup) — making it the standard range used by virtually all pool systems.

  • Pump Pressure is a bar displaying the pipe pressure between the pump outlet and the filter tank inlet. The primary purpose of the Pump Pressure Sensor is to check whether the pump is running. If the measured value exceeds the configured threshold (Pump Pressure Settings), the system considers the pump to be running. In Auto mode, if pH is above the configured range and the pump is running, the system will inject CO₂. If the pump is not running, CO₂ will not be injected.

  • CO₂ Tube/Injection Pressure is a bar displaying CO₂ pressure, which shows 2 different states:

    • When CO₂ injection is ON: the displayed pressure is the CO₂ injection pressure. This value is used to adjust the CO₂ injection strength on the CO₂ Regulator.

Typically, adjust the Regulator so the CO₂ Injection pressure is approximately 0.75-0.85 bar. If set too high, the temperature at the CO₂ Regulator will drop very low, causing excessive condensation and ice formation. Conversely, if set too low, CO₂ injection will be too weak, resulting in slow pH adjustment.

  • When CO₂ injection is OFF: the displayed pressure is the CO₂ tank pressure. This value indicates whether the CO₂ tank is running low.

A new CO₂ tank typically shows approximately 3.3-4.3 bar. If the pressure drops below 1.5 bar, it's getting low. If below 0.7 bar, it's time to replace the tank.