Calibration Galaxy 170L S (Biotech, New Brunswick)

I have a Co2 Incubator Galaxy 170L S (Biotech, New Brunswick) with an up, bown, enter and star button and two led displays which has failed the calibration checks, both Co2 and temperature.

I am looking for a list of parameters or instructions so I can recalibrate the incubator. The manuals I have found do not contain either!