85
GasAlertMicro 5/PID/IR
Maintenance
Table 21. Replacing a Sensor or Sensor Filter
1. Deactivate the detector.
2. Remove the two machine screws on the rear shell and then
remove the sensor cover or pump module.
3. Remove the sensor filter and/or the sensor(s).
4. Insert the new filter and/or sensor. Ensure the sensor posts are
aligned correctly.
5. Re-assemble the detector.
6. If the sensor is changed, such as SO
2
to an H
2
S, the detector
must be reconfigured. Refer to
in the
option.
7. A sensor that has been replaced must be calibrated immedi-
ately. Refer to
Calibration and Setting Alarm Setpoints
Photoionization Detector (PID)
Clean or Replace the Lamp
The PID lamp must be cleaned regularly. Use only the cleaning kit
that is supplied by BW Technologies by Honeywell.
To clean the PID lamp, refer to the illustrations and procedures that
are provided with the
PID Lamp Cleaning Kit
. To order the kit, refer
Replacement Parts and Accessories
a
Caution
To ensure proper maintenance and continued accurate
readings from the sensor, use only the PID Lamp
Cleaning Kit that is supplied by BW Technologies by
Honeywell.
Table 22. Parts of the PID sensor
Item
Description
1
Sensor cover
2
Sensor filter
3
Sensors
4
Detector
5
Machine screws (2)
Item
Description
1
PID sensor
2
Diffusion barrier
3
Sensor cover
4
Electrode stack
5
Lamp
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