Understanding The Display (See Figure 3-3); Warning - MSA Orion plus Mode D'emploi

FAS command and goes into alarm.
Do not activate the Fresh Air Setup unless you are certain
you are in fresh, uncontaminated air; otherwise, inaccurate
readings can occur which can falsely indicate that a haz-
ardous atmosphere is safe. If you have any doubts as to the
quality of the surrounding air, do not use the Fresh Air Setup
feature. Do not use the Fresh Air Setup as a substitute for
daily calibration checks. The calibration check is required to
verify span accuracy. Failure to follow this warning can
result in serious personal injury or death.
Persons responsible for the use of the Orion plus Multigas Detector
must determine whether or not the Fresh Air Setup option should be
used. The user's abilities, training and normal work practices must be
considered when making this decision.
1. Turn ON the Orion plus Multigas Detector.
• Once the instrument self check is complete, the instrument
offers a Fresh Air Setup option.
2. To perform a Fresh Air Setup, push the display indication YES
(RESET) button.
3. To immediately skip the FAS, push the NO (PAGE) button.
• If no buttons are pushed, the Orion plus Multigas Detector
enters the Measuring mode.

Understanding the Display (see FIGURE 3-3)

Figure 3-3. Heartbeat, Time & Date, and Battery Life Indicator

" WARNING

3-3