Instrument Safety And Certifications; Warning; Safety Limitations And Precautions - MSA Orion plus Manual De Operación

Chapter 1,

Instrument Safety and Certifications

The Orion plus Multigas Detector is for use by trained and qualified
personnel. It is designed to be used in air when performing a hazard
assessment.
The Orion plus Multigas Detector can be equipped to detect:
• Combustible gases and certain combustible vapors
• Oxygen-deficient or oxygen-rich atmospheres
• Specific toxic gases for which a sensor is installed.

Safety Limitations and Precautions

Carefully review the following warnings, safety limitations and
precautions before placing this instrument in service:
• The Orion plus Multigas Detector is designed to detect (in air only)
combustible gases and vapors and specified toxic gases for which
a sensor is installed.
• Perform the following checks before each day's use to verify proper
instrument operation:
• Gas response check (see Calibration section)
• Calibrate if the readings are not within the specified limits.
• Check pump for proper operation (see "Verifying Pump
Operation" section). Have pump serviced if necessary.
• Check calibration more frequently if the unit is subjected to
physical shock or high levels of contaminants. Also, check
calibration more frequently if the tested atmosphere contains the
following materials, which may desensitize the combustible gas
sensor and reduce its readings:
• Organic silicones
• Silicates
• Lead-containing compounds
• Hydrogen sulfide exposures over 200 ppm or exposures
over 50 ppm for one minute.
• A combustible gas reading of "100" indicates the atmosphere is

" WARNING

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