Product Manual

Table Of Contents
GasAlertMaxXT II
User Manual
44
4. Press and hold C while the detector performs the OFF
countdown. Continue to hold C as the detector briefly
deactivates.
The detector then reactivates and performs the calibra-
tion countdown. Continue to hold C until the countdown
is complete.
Note
If C is not held for the entire countdown, the detector will deac-
tivate.
Auto Zero Sensor
Note
Do not apply calibration gas until Apply Gas displays, other-
wise the auto zero function will fail.
flashes while the detector automatically zeroes
the combustible and toxic sensors, and calibrates the
oxygen sensor.
When auto zero is complete, the detector beeps two
times.
Auto Zero Successful: If the sensor(s) successfully zeroes, the detec-
tor automatically proceeds to the Auto Span
function.
Auto Zero Unsuccessful: If a sensor(s) fails auto zero, an error mes-
sage and which sensor(s) failed displays.
To determine the cause and solutions for the failed sensor(s), refer to
Troubleshooting
.