Maintenance Procedure - Replacing Or Adding A Sensor - MSA ALTAIR 5X Manuel D'utilisation

4.4

Maintenance Procedure - Replacing or Adding a Sensor

Any factory-installed Series 20 sensor may be removed or replaced with a like type. Any XCell sensor
may be removed or replaced according to the positions allowed in table below Figure 1414.
If the type of any sensor (including the IR sensor) is to be changed, the device must be returned to an
authorized service center.
Before handling the PC board, ensure you are properly grounded; otherwise, static charges from
your body could damage the electronics. Such damage is not covered by the warranty. Grounding
straps and kits are available from electronics suppliers.
Remove and reinstall sensors carefully, ensuring that the components are not damaged; otherwise
device intrinsic safety may be adversely affected, wrong readings could occur, and persons relying
on this product for their safety could sustain serious personal injury or death.
While device case is open, do not touch any internal components with metallic/conduc-
tive objects or tools.
Damage to the device can occur.
1
Fig. 14 Possible positions for sensor replacement
1 Combustible sensor
2 O sensor, Two-Tox sensor 4
2
SENSOR
XCell combustible sensor
XCell O sensor
2
XCell Two-Tox sensor
XCell SO , Cl , NH
2 2
XCell CO-HC
Series 20 sensor
(1) Verify that the device is turned OFF.
3 NH , CL
3
NH , CL
3
OPERATIONAL ONLY IN POSITION
1
2
2 or 4
3 or 4
3
4
3
ALTAIR 5X/ALTAIR 5X IR
NOTICE
WARNING
2
3
4
, H S, SO sensor (position with adapter) or Series 20 sensor
2 2 2
, SO , CO-HC sensor, Two-Tox sensor
2 2
Maintenance
US
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