To Clear An Alarm; Calibration Check; Warning - MSA Sirius Manual De Operación

3. When the pump inlet, sample line or probe is blocked, the pump
alarm must activate. If the alarm does not activate:
a. Check the sample line and probe for leaks.
b. Once leak is fixed, recheck pump alarm by blocking the flow.
4. Check the pump before each day's use
Perform a blocked flow test before each day's use. 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 sucked into the instrument, read-
ings will be inaccurate and the instrument could be dam-
aged. We recommend the use of an MSA Sample Probe
(P/N 10042621, 10042622, 10040589, or equivalent) contain-
ing a special membrane filter, permeable to gas but imper-
meable to water, to prevent such an occurrence.
5. Press the RESET/
pump.
During operation, a pump alarm may occur when the:
• Flow system is blocked
• Pump is inoperative
• Sample lines are attached or removed.

To Clear an Alarm

1. Correct any flow blockage.
2. Press the RESET/
• The Pump will now restart.
NOTE: When the instrument is in a gas alarm, the pump alarm
may not display until gas alarm is cleared.

Calibration Check

The calibration check is simple and should only take about one minute.
Perform this calibration check before each day's use for each installed
sensor.

" WARNING

"
button to reset the alarm and restart the
button.
3-9