After Use; Changing Batteries - MSA ORION Manual

Four-Head Gas Detector: MSA Orion
4.2

After use

Clean with a soft damp cloth.
If the pump alarm keeps activating, replace the dust filter and external water stop.
Any of the following conditions can cause the sensors to be desensitised:
• the Orion is subjected to physical shock
• the 100% LEL alarm has latched on
• hydrogen sulphide exposure over 200 ppm, or over 50 ppm for one minute
• organic silicones are monitored
• silicates are monitored
• carbon monoxide sensor goes over-range
• any compound containing lead is monitored
• if formaldehyde, acrylonitrile, styrene, or carbon disulphide are monitored.
If any of these conditions is experienced, carry out the following procedure:
a) Run the Orion in known clean air for 15 minutes, acknowledging any alarms as
they occur.
b) Conduct a challenge test to confirm the sensor has returned to normal readings.
If the Orion fails this challenge test, call Gas Help.
c) Zero and field calibrate the Orion.
d) Confirm the calibration by conducting a challenge test.
If the Orion fails this calibration, call Gas Help.
4.3

Changing batteries

The Orion is powered by 3 AA size alkaline batteries. Only use Duracell MN1500
available through ESCAT; CI: 00017.
To change batteries:
a) Begin with the Orion turned off.
b) Locate the battery pack screws on the bottom rear of the unit. Use a Phillips
head screwdriver and fully undo the screws.
D.I. Rec-ommended Practice
FILE: W:\NB\RP HMRU\Orion\Frame Ver 02\Orion.fm
NOTE
When replacing batteries, always:
• discard old batteries,
• replace all three batteries at the same time.
• order new replacement batteries.
Version 02 Issued February 2011
© Copyright State of NSW (Fire and Rescue NSW) 2011
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