MSA ALTAIR 5X Manual De Uso página 22

4 Operation
Sampling System Safety Test
Upon startup, an alarm (visual, audible and vibrating) is triggered and the customer is prompted to block the
pumps/sampling system of the device within 30 seconds.
When the device detects a pump flow block, it will display a PASS message. The startup sequence will resume.
If the device does not detect a pump flow block, it will display an error message.
The device will shut OFF after the customer acknowledges this message by pressing the ▲button.
Check your sampling system if this occurs and contact MSA as needed.
Users can check the operation of the sampling system anytime during operation by blocking the sampling system to
generate a pump alarm.
WARNING!
• Do not use the pump, sample line, or probe unless the pump alarm activates when the flow is blocked. Lack of an
alarm is an indication that a sample may not be drawn to the sensors, which could cause inaccurate readings.
• Never let the end of the sampling line touch or go under any liquid surface. If liquid is drawn into the device, readings
will be inaccurate and device could be damaged. We recommend the use of an MSA sample probe containing a
special membrane filter, permeable to gas but impermeable to water, to prevent such an occurrence.
Failure to follow this warning can result in serious personal injury or death.
Fresh Air Setup (FAS) at Device Turn-ON
The Fresh Air Setup (FAS) is for automatic ZERO adjustment of the device.
The FAS has limits. If a hazardous level of gas is present, the device ignores the FAS command and the device alarm
activates.
The ability to perform an FAS at device turn-ON can be disabled by using MSA Link software.
NOTE: The Fresh Air Setup is not available for the CO
WARNING!
• Do not perform the Fresh Air Setup unless you are certain you are in fresh, uncontaminated air; other-wise,
inaccurate readings can occur which can falsely indicate that a hazardous atmosphere is safe. If you have any
doubts as to the quality of the surrounding air, do not use the Fresh Air Setup feature.
• Do not use the Fresh Air Setup as a substitute for daily calibration checks. The calibration check is required to verify
span accuracy.
Failure to follow these warnings can result in serious personal injury or death.
Figure 8 Fresh Air Setup
The device displays a blinking "FRESH AIR SETUP?", prompting the user to perform a Fresh Air Setup:
1. Press the ▲ button to bypass the Fresh Air Setup.
The Fresh Air Setup is skipped and the device goes to the Measuring page (Main page).
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ALTAIR 5X / ALTAIR 5X IR US