15. Servicing
WARNINGS
Take care when handling sensors as they may contain corrosive solutions.
Do not tamper or in any way disassemble the sensor. Do not expose to
temperatures outside the recommended range. Do not expose sensor to
organic solvents or ammable liquids.
At the end of their working life, sensors must be disposed of in an
environmentally safe manner. Disposal should be according to local waste
management requirements and environmental legislation. Alternatively,
sensors may be securely packaged and returned to Honeywell Analytics
clearly marked for environmental disposal. Sensors should NOT be
incinerated as they may emit toxic fumes.
Caution: The following procedure should be followed carefully and only
performed by suitably trained personnel.
A fault condition will be signalled by the detector if the sensor is removed
with the unit under power.
15.1 Sensor replacement
Caution: For biased sensors (e.g. Nitrogen Dioxide) remove the
sensor stabilizer from the bottom of the sensor prior to installation.
Using diagram 13 as a guide, follow the procedure below:
1. Check that the label on the new sensor is the correct gas type.
2. Enter the change sensor menu (see section 12).
3. Unscrew the weatherproof cover, loosen the retainer locking screw and unscrew the sensor retainer.
4. Remove the old sensor by pulling without twisting.
5. Plug in the new sensor taking care to align the sensor pins with the connector.
6. Ret the sensor retainer, tighten the locking screw and ret the weatherproof cover.
7. Countdown time of up to 180 seconds (dependant on sensor type) is displayed.
8. Re-calibrate the detector following the procedures in section 8.2.
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