MSA altair 4x - Device Operations and Tests

OperationMSA
ALTAIR 4X
GB
37
3.6 Function Tests
Alarm Test
 Turn on the device. Verify that:
- all LCD segments are activated momentarily
- alarm LEDs flash
- horn sounds briefly
- vibrating alarm triggers briefly.
3.7 Safe LED
The device is equipped with a green Safe LED. This green Safe LED flashes every
15 seconds under the following conditions:
- the SAFE LED feature is enabled
- device is in Measurement Mode [Normal Operation]
- combustible reading is 0% LEL or 0.00% CH
4
- Oxygen [O
2
] reading is 20.8%
- Carbon Monoxide [CO] reading is 0 ppm or mg/m
3
- Hydrogen Sulphide [H
2
S] reading is 0 ppm or 0 mg/m
3
- no gas alarms are present [low or high]
- device is not in Low Battery warning or alarm
- CO, H
2
S, STEL and TWA readings are 0 ppm or 0 mg/m³.
3.8 Bump Test
This test quickly confirms that the gas sensors are functioning. Perform a full cali-
bration periodically to ensure accuracy and immediately if the device fails the
Bump Test. The Bump Test can be performed using the procedure below or auto-
matically using the GALAXY GX2 Test Stand.
Attention!
Perform a Bump Test to verify proper device operation. Failure to per-
form this test can result in serious personal injury or death.
Bump test frequency is often stipulated by national or corporate regula-
tions; however, bump testing before each day’s use is generally the ac-
cepted best safety practice and is therefore MSA’s recommendation.
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