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If it is too hot to calibrate (>25°C) a red thermometer
will be shown onscreen.
Move the ToxCO® to a cooler area and try again later.
Ensure the fine control valve is
in the off position.
Screw the fine control valve and
flow indicator assembly to the
gas can. This is best done by
screwing the gas can into the
valve.
Once this has been successfully carried out, the first step of the calibration process will be shown onscreen.
