GX-6000 Operator’s Manual
Appendix D: Using the GX-6000 in Bar Hole Mode • 177
4 . 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.
5 . See “Turning On the GX-6000” on page 25 for a description of the remainder of the
warm-up sequence keeping the following in mind:
a. Even if
LUNCH BREAK
is set to
ON
, the Lunch Break Screen will not appear.
b. The Low Alarm, High Alarm, STEL, and TWA screens will not appear.
c. If the IR CH
4
or IR HC (whichever is installed) sensor fails, it is not possible to
enter Bar Hole Mode. Press and release the RESET button to acknowledge the
failure and return to the Normal Mode Select Screen. Replace the failed sensor.
If oxygen sensor fails, press RESET to acknowledge the failure and then
continue to Bar Hole Mode. No oxygen reading will be displayed. Replace the
failed sensor as soon as possible.
If any other installed sensor fails, press and release the RESET button to
acknowledge the failure and continue to Bar Hole Mode. Change the failed
sensor(s) as soon as possible for use in Normal Mode.
6 . The GX-6000 is now operating in Bar Hole Mode. The pump is off and the following
screen appears.
The combustible gas and oxygen channels are displayed along with the battery
charge level and station ID.
NOTE:
If the oxygen sensor fails or if the oxygen channel is turned off, no oxygen
indication will display on the Bar Hole Mode screen.
Performing a Fresh Air Adjustment, Bar Hole Mode
Before using the GX-6000, it is recommended to set the fresh air readings for the target
gases by performing a fresh air adjustment. This will set the combustible gas channel to
zero and the OXY channel to 20.9%.
1 . Find a fresh-air environment. This is an environment free of toxic or combustible
gases and of normal oxygen content (20.9%).
2 . Turn on the unit as described above in “Turning On the GX-6000, Bar Hole Mode”.
4:07
CH4
O2
0
%LEL
20.9
%
VALVE 3