Replacing The Pump Filter - MSA Altair 5X Mode D'emploi

6. Re-install the sensor gasket in the case front.
7. Re-install the front case, screws, and battery pack.
8. If a change in XCell Sensor configuration is detected during the
instrument turn-ON process:
• The "ACCEPT?" prompt appears on the display
• The ▼ (YES) button accepts the sensor configuration
• The ▲ (NO) button rejects the sensor configuration;
the instrument is not operational.
9. When an XCell sensor is replaced, the instrument automatically
enables the sensor after the user accepts the change. If a Series
20 sensor is replaced, the user must ensure that the sensor is
enabled (see Section 3.4.3).
10. If the oxygen sensor was replaced, see Section 3.2.3 regarding the
oxygen reading display.
11. After installation of new sensors, allow them to stabilize at
least 30 minutes before calibration. Calibrate instrument
before use.
Calibration is required after a sensor is installed;
otherwise, the instrument will not perform as expected and
persons relying on this product for their safety could
sustain serious personal injury or death.

4.5. Replacing the Pump Filter

1. Turn OFF the instrument.
2. Unscrew the two captive screws from the clear filter cover on the
back of the instrument to access the filter.
3. Carefully lift out the O-ring and the filter disk.
4. If the instrument is NOT configured to use a reactive toxic gas
sensor (does not have a Cl
use both the paper-like filter and the fibrous dust filter (the thicker
disk) as supplied in Maintenance Kit (P/N 10114949).
If the instrument IS configured to use a reactive toxic gas sensor
(Cl , ClO , or NH
2 2
Reactive Gas Maintenance Kit (P/N 10114950).
4-6
! WARNING
, ClO
2
), use ONLY the paper filter supplied in the
3
, or NH sensor),
2 3