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  1. Low Pressure Switch
    • Should be installed after the sediment filter and before Inlet Solenoid and Pump.  Uses a micro switch to signal when inlet pressure is below 5psi.  Used to prevent the system from continuous operation that can happen when the water supply is stopped.  Without the LPS, if the inlet supply is interrupted the system will continue to operate because the storage tank will not fill (not making water) and therefore not provide an 'OFF' signal for the system.

  2. Inlet Solenoid
    • The Inlet, or Main Solenoid opens at start of filtration cycle and closes at end of filtration cycle.

  3. Pressure Boost Pump
    • Used in areas where the source water pressure is below 50psi.  The Pressure Boost Pump provides a constant 70+psi for optimum membrane performance.  Pump model varies depending on membrane specification.

  4. Controller (PCB)
    • The PCB Controller integrates all the electronic functions of the system.  It operates the system based on two sensor inputs, typically the Low Pressure Switch and Level Sensor.  Based on signals from these two sensors, the PCB opens and closes the Inlet Solenoid and Auto Flush Solenoid, and starts and stops the Pressure Boost Pump.

  5. Float Level Sensor
    • In the case of an atmospheric tank, a level sensor must be used to indicate tank level to start and stop the system operation.  Float Level Sensors are available in side mount or vertical mount.  Vertical mount can be either Dual or Single Float.

  6. Auto Flush Solenoid
    • The Auto Flush Solenoid is controlled either by the PCB or the Auto Flush Circuit.  When the solenoid is closed the brine passes through an orifice that is sized according to the membrane specification which restricts the brine flow for normal operation.  At the beginning of each filtration cycle, the Solenoid will open allowing free brine flow to flush the membrane surface.