MAINTENANCE & TROUBLESHOOTING
5-
2
5.1. Diagnostic
Mode
To place the monitor in diagnostic mode, first turn the monitor
off. Next push and hold the
[Y/+]
and the
[MODE]
keys for at
least two seconds. After the unit “beeps”, release both keys
and the monitor will turn on in diagnostic mode and will show 1
to 4 numbers with a message “Raw”. These numbers are the
raw sensor readings without calculation. If the raw reading is
outside the normal range, or does not change when gas is
applied, the sensor or the unit may be defective.
Other parameters of the monitor can be reached by pressing
[MODE]
repeatedly until the desired parameter is shown. See
the long form manual for details of each parameter function.
Table 6. Displays in Diagnostic Mode
Key Action
Display
Sensor raw readings
[MODE]
sensor name
[MODE]
battery voltage, & charge raw count
[MODE]
Adjust LCD contrast
[MODE]
Adjust buzzer frequency
[MODE]
LEL or VOL sensor raw readings
[MODE]
Date, time, battery voltage & temperature
[MODE]
LEL & OXY sensor expiration date
[MODE]
Tox1 & Tox2 sensor expiration date
[MODE]
Adjust pump stall threshold
[MODE]
Serial number
[MODE]
Battery duration time
[MODE]
Communicate with PC?
