04 Series for CO(-H2)
Chapter 5: User Mode and Calibration • 37
Entering User Mode
WARNING:
The CO-04C is not in operation as a gas detector while in User Mode.
1. Take the CO-04C 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
0000
PASS-W
BUMP
BUMP
