User Manual
Labconco Operating Instructions 5242600, Rev. B 4/27/07, ECO E275  11 of 20 
To calibrate the pressure sensors for both chambers, the doors must be open so that atmospheric 
pressure is present at both sensors. This is the “zero point” for both sensors. Both pressure 
gauges on the glove box will also read “zero.” 
With both doors open, press the key adjacent to “Yes.” Once this is done, the following display 
screen on the next page appears: 
Back to 
Previous 
Screen 
Yes, All 
Doors 
Open 










