Oxygen Measurements; Warning - MSA Orion plus Manual De Operación

move to the background.
• To silence the alarm, press the RESET button.
NOTE: This alarm cannot be reset with RESET button until the
condition is cleared.
• When the combustible gas indication reaches 125% LEL, the:
• LockAlarm circuit locks the combustible gas reading and alarm
• Alarm sounds
• Alarm lights flash
• Overrange message appears on the display.
• This alarm cannot be reset with the CHANGE/RESET button.
If the overrange LEL alarm condition is reached, you may be
in a life-threatening situation; there is enough gas in the
atmosphere for an explosion to occur. In addition, any rapid
up-scale reading followed by a declining or erratic reading
can also be an indication that there is enough gas for an
explosion. If either of these indications occur, leave and
move away from the contaminated area immediately. Failure
to follow this warning can result in serious personal injury
or death.
• After moving to a safe, fresh-air environment, reset the alarm by
turning OFF the instrument and turning it ON again.

Oxygen Measurements

The Orion plus Multigas Detector can be equipped to detect the amount
of oxygen in the atmosphere.
• Two conditions, depending on setpoints, can trigger the alarm:
• Too little oxygen (deficient)
• Too much oxygen (enriched).
• When the alarm setpoint is reached for either of the above:
• Alarm sounds and Alarm lights flash
• Hi or Lo Alarm indication and % O 2 label above the
concentration flashes; all other non-alarming gas readings
move to the background.

" WARNING

3-9