Warning; Fresh Air Set Up Option - MSA Orion Operation Manual

Chapter 3, Using the Orion Multigas Detector
• Gas concentrations appear on the display.
A calibration check must be performed after switching battery
packs to assure accuracy of readings. Failure to perform
a calibration can result in serious personal injury or death.

Fresh Air Set Up Option

(for automatic zero adjustment of the Orion Multigas
Detector sensors)
NOTE: The Fresh Air Setup (FAS) has limits. If a hazardous
level of gas is present, the Orion Multigas Detector
ignores the 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
hazardous 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 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 Multigas Detector.
• Once the instrument self check is complete, the ZERO
flag flashes for 10 seconds.
2. To perform a Fresh Air Setup, push the ON/OFF-PAGE button
while the Zero flag is flashing.
3. To immediately skip the FAS, push the CHANGE/
RESET button.
• If no buttons are pushed, the FAS automatically stops
flashing after the 10 seconds have expired.
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Operating Manual