Crowcon Gasman User Manual page 32

i-module replacement
6. Ensure the gasket is in place on the sensor, slip the sensor onto
the sensor housing. Click the quick release fixings around the
i-module board, ensuring the i-module is held in place firmly and
the sensor is still tightly located on the module board.
7. Replace the back of the Gasman case.
8. Switch on the Gasman unit. The new i-module will be automatically
recognised.
9. Crowcon advise carrying out a calibration check when any new sensor
is fitted.

Gasman