RAEGuard 3 User Manual
16
3.2 Installing the sensor
Replacement or installation of toxic gas and oxygen sensor as well as flammable
gas and NDIR sensor
Toxic gas and oxygen sensor Flammable gas and NDIR sensor
To Replace/install the sensor module:
1. Remove the Waterproof Cap (if fitted) from the sensor.
2. Loosen the Locking Grub screw on the Sensor Retainer with the small
end of the Z-type Tool.
3. Unscrew and remove the Sensor Retainer.
4. If replacing/installing Flammable gas and NDIR sensor, please skip Step
2&3 to Step 5 directly.
5. Remove the sensor module from the Sensor Socket and plug the new
one in, taking care to align the sensor pins with the connector.
6. Refit the Sensor Retainer and tighten Locking Grub Screw, and then
screw the Waterproof Cap (if required) to the Sensor Retainer securely.
Warning
Care should be taken when removing and refitting sensor module to the sensor
socket so that damage to the connection pins can be avoided.
If using anti-seize compound, they should not contain substances that may poison
or suppress the catalytic flammable gas sensor, such as silicides, sulfides,
chlorine, lead, or halogenated hydrocarbons.
Take care when handling old sensors as they may contain corrosive
substances.
Take care when removing or replacing Sensor Retainer as there may be sharp
edges present on the adjoining threads.
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