104 • Appendix B: Gas Select Mode GX-3R Operator’s Manual
Entering Gas Select Mode
WARNING: The GX-3R is not in operation as a gas detector while in Gas Select Mode.
1 . Take the GX-3R to a non-hazardous location and turn it off if it is on.
2 . Press and hold AIR, then press and hold POWER MODE. You will hear a beep after one
second. Continue to hold the buttons down.
3 . You will hear a second beep. Continue to hold the buttons down.
4 . When you hear a third beep, release the buttons.
5 . A password screen appears. The first digit flashes. The password is 2014.
6 . Use AIR to select each password number then press POWER MODE to save it and move
on to the next number. To go back a number, press and hold AIR and POWER MODE
for a few seconds. To reverse the direction of change (ie. from increasing to decreasing
or vice versa):
a. Press and hold AIR.
b. Immediately press POWER MODE and then release both buttons.
7 . The GAS COMB menu item displays.
8 . at the top of the screen indicates that the GX-3R is in Gas Select Mode.
9 . Use AIR to move through the Gas Select Mode menu items.
Tips for Using Gas Select Mode
• To scroll from one menu item to the next, press and release AIR. To reverse the scrolling
direction:
a. Press and hold AIR.
b. Immediately press POWER/MODE and then release both buttons.
c. The scrolling direction returns to the original direction when you exit and reenter a
menu.
• To skip an item when a question is asked, press and release AIR.
• To enter an item and to save any changes, press and release POWER MODE.
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