Verifying Pump Operation - MSA Altair 5X Mode D'emploi

4.2 Verifying Pump Operation

Users can check operation of the sampling system any time during
operation by blocking the sampling system to generate a pump alarm.
When the pump inlet, sample line or probe is blocked, the pump alarm
must activate.
Once gas readings display, plug the free end of sampling line or probe.
• The pump motor shuts down and an alarm sounds.
• "PUMP ERROR" flashes on the display.
Press the ▲ button to reset the alarm and restart the pump.
If the alarm does not activate:
1. Check the sample line and probe for leaks.
2. Once leak is fixed, recheck pump alarm by blocking the flow.
3. Press the ▲ button to reset the alarm and restart the pump.
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.
Failure to follow the above can result in serious personal
injury or death.
Never let the end of the sampling line touch or go under
any liquid surface. If liquid is drawn into the instrument,
readings will be inaccurate and instrument 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.
During operation, a pump alarm may occur when the:
• Flow system is blocked
• Pump is inoperative
• Sample lines are attached or removed.
To Clear Pump Alarm
1. Correct any flow blockage.
2. Press the ▲ button.
• The pump will now restart.
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