If the PH-200 sensor is damaged, a new sensor can be fitted
- Remove the sensor gasket ring by twisting counter-clockwise.
- Gently pull the sensor off the unit.
- Gently insert the new sensor into the unit. Be sure to align the grooves properly. Never force the sensor unto the unit!
- Make sure the rubber gasket O-ring is properly positioned on the sensor.
- Screw the orange gasket ring back onto the unit by twisting clockwise. Hand tighten.