Fresh Air Set Up Option; Warning - MSA Sirius Mode D'emploi

Fresh Air Set Up Option

(for automatic zero adjustment of the Sirius Multigas Detector sensors)
NOTE: The Fresh Air Setup (FAS) has limits. If a hazardous level of
gas is present, the Sirius 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 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 Sirius 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 Sirius Multigas Detector.
• Once the instrument self check is complete, ZERO? flashes for
10 seconds.
2. To perform a Fresh Air Setup, push the ON/OFF button while
ZERO? is flashing.
3. To immediately skip the FAS, push the RESET/
• If no buttons are pushed, the ZERO? automatically stops
flashing after the 10 seconds have expired and the FAS is not
performed.
3-4

" WARNING

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button.