Fresh Air Setup Option - MSA Orion plus Mode D'emploi

The instrument now performs the following Self-test where the:
• Instrument details are displayed
• Audible alarm sounds
• Alarm lights illuminate
• Display backlight illuminates
• Internal instrument diagnostic occurs
(any detected internal errors appear on the display) and all pre-
set alarms are displayed.
When the Self-test ends:
• The instrument offers the FAS option to zero the instrument
• If the FAS is declined or no buttons are pressed, the
instrument enters the Measure mode
• Gas concentrations appear on the display.

Fresh Air Setup Option

(for automatic zero adjustment of the Orion plus Multigas Detector
sensors)
NOTE: The Fresh Air Setup (FAS) has limits. If a hazardous level of
gas is present, the Orion plus Multigas Detector ignores the
3-2
Figure 3-2 Startup Screen