6 Maintenance
6-3. Replacement parts
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6-3. Replacement parts
<Replacement of Gas Sensor>
To replace the gas sensor, use the following procedure.
1. Open the door of the main unit, loosen the two anti-removal screws and remove the sensor part.
2. Remove the AMP board, bushing, screws, and sensor mounting plate and replace the sensor.
3. Reassemble the sensor section and reinstall it in the main body using the reverse procedure to the
above.
NOTE
The gas calibration using the standard gas is required after the sensor is replaced. Please make a
request to RIKEN KEIKI.
If adjustment to the standard gas concentration value fails even with the maximum sensitivity, it
indicates that the gas sensor has come to the end of its life. The gas sensor needs to be replaced.
After replacing the gas sensor, electrical adjustment and calibration using the standard gas are
necessary.
Sensor
Sensor Cap
Loosen the two anti-loss screws.
Sensor
Bushing
AMP board
Screw
Screw
Sensor mounting plate
