Before getting started with the ALTAIR io 4, there are several things to know. Please read this user guide carefully before
using the device. The device will perform as designed only if it is used and maintained in accordance with the
manufacturer’s instruction. Otherwise, it could fail to perform as designed and persons who rely on this device for their
safety could sustain serious personal injury or death. In addition to manufacturer instructions, applicable national
regulations should be considered for safe use.
1.3.1 General Warnings and Precautions
WARNING!
• Use the device only to detect gases/vapors for which a sensor is installed.
• Do not use the device to detect combustible dusts or mists.
• Do not open the device in an explosive atmosphere.
• Do not use the device if:
○ the function test is unsuccessful,
○ the device is damaged,
○ a competent servicing/maintenance has not been completed, or
○ genuine MSA spare parts have not been used.
• If the device is subjected to physical shock, the device must pass calibration before continuing use.
• Charging the device in a hazardous environment poses a risk of explosion. Do not charge the device in a hazardous
area.
• Do not use silicone-type lubricants when assembling the detector, and do not allow silicone vapors to be drawn into
the flow system while in operation. Silicone can desensitize the combustible gas sensor, thereby giving erroneously
low readings.
Failure to follow this warning can result in serious personal injury or death.
1.3.2 Functional Check
Before each day’s use, check the function of the device. To power on the device to check its functionality, refer to the Power
On and Off section. Once the device is powered on, the display will activate and the device will complete a start-up
sequence, during which you should observe proper function of the:
• Display
• Alert LEDs
• Horn
• Vibration
1.3.3 Gas Measurement
Combustible Gas
Do not use the device to test for combustible gases in atmospheres containing vapors from liquids with a high flash point
[above 38 °C (100 °F)], as this may result in erroneously low readings.
CSA requires (per CAN/CSA-C22.2 No. 60079-29-1) that combustible sensor sensitivity be tested before each day's use on
a known concentration of methane equivalent to 25 to 50 % of full-scale concentration. Accuracy must be within 0 to +20 %
of actual.
5 ALTAIR io 4
US 1 Safety Notices
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