Turning On And Fresh Air Setup - MSA ALTAIR 4X Operating Manual

3.2. Turning ON and Fresh Air Setup

Instrument operation is dialog driven from the display with the aid of the
three Function buttons (see Section 2.2.1). For more information, see
the flow charts in Section 7.
Turn the instrument ON with the
The instrument performs a self test and then goes to Fresh Air Setup:
• all display segments are activated
• audible alarm sounds
• alarm LEDs light
• vibrating alarm is activated.
During the self test, the instrument checks for missing sensors. In the
case of a missing sensor, the instrument displays the Sensor Missing
screen and alarms until it is turned OFF. Otherwise, the turn-ON
sequence continues.
The instrument displays:
• Alarm and display self test
• Manufacturer name
• Instrument name
• Software version
• Sensor discovery
• Combustible gas type
• Toxic gas units
• Alarm setpoints (
• Calibration values
• Date and time display
• Last cal date (if activated)
• CAL due date (if activated)
• Fresh Air Setup option.
Refer to flowchart in Appendix, Section 7.1.
3-2
button.
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