GX-2012 Operator’s Manual Start Up, Bar Hole Mode • 73
3. Press and briefly hold down the POWER ENTER button. The Normal
Mode Select Screen displays.
4. Use the AIRS or (SHIFT)T buttons to scroll to the Bar Hole Mode
Select Screen.
5. With the Bar Hole Mode Select Screen displayed, press and release the
POWER ENTER button to begin the Bar Hole Mode startup sequence.
NOTE: If no button is pressed for 20 seconds, the unit will proceed into
whichever mode is displayed.
6. If CL RMNDR is turned on (factory setting), the screen that appears next
depends on how CL EXPRD is set in the Maintenance Mode Menu
(page 130).
• If the unit is due for calibration and CL EXPRD is set to CONFIRM
(factory setting), then the following screen displays.
The alarm LED’s and buzzer will pulse several times. After this,
press and release the RESET SILENCE button to continue.
0
20.9
0
0.0
vol%
%LEL
%
ppm
ppm
CH4
O2
NORMAL ?
CO
H2S
0
20.9
30
vol%
%LEL
ppm
%
BAR HOLE MODE
vol%
sec
CH4
O2
B.H. MODE?
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