36 • Chapter 5: User Mode and Calibration
GasWatch 3 for CO and O
2
Entering User Mode
WARNING:
The GasWatch 3 is not in operation as a gas detector while in User Mode.
1. Take the GasWatch 3 to a non-hazardous location and turn it off if it is on.
2. Press and hold AIR, then press and hold POWER/MODE. When you hear a beep, release
the buttons.
3. The screen that appears depends on the setting of User Mode’s
PASS-W
item.
If
PASS-W
is set to
OFF
(factory setting), continue with Step 6.
If
PASS-W
is set to
ON
4. If
PASS-W
is set to
ON
in User Mode, a password screen appears and the first digit
flashes. The factory-set password is
0405
but it can be changed.
5. 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.
6. The
BUMP
item displays.
7. Use AIR to move through the User Mode items.
PASS-W
set to
OFF PASS-W
set to
ON
BUMP
PASS - W
0 0 0 0
BUMP
