Maintenance Inspection
52
3-4-2. Replacing the Oxygen Sensor
WARNING
As part of daily inspection, check the oxygen sensor for any sign of deterioration or liquid leakage.
If any cracks should be found on the external surface, replace it immediately with a new one.
The oxygen sensor is a sealed device containing a potassium hydroxide electrolyte. The electro-
lyte may leak out if the sensor should be damaged when dropped, etc. If the electrolyte should
touch your skin or clothes, wash it away with copious amounts of water. If it should get in your eye,
wash your eye immediately with copious amounts of water and consult the doctor.
Dispose of a used oxygen sensor in accordance with the appropriate disposal procedure.
CAUTION
Replace the two oxygen sensors at the same time.
If an oxygen sensor alarm remains on, the oxygen sensors may be defective. Replace the old
oxygen sensors with new ones.
Leave the oxygen sensor in the atmosphere for more than one hour after taking it out of its pack-
age. The sensor output is not stable immediately after the sensor is taken out of its package and an
oxygen sensor alarm may occur.
Avoid direct sunlight and high temperature when storing the oxygen sensor.
The life span of the oxygen sensor varies depending on the ambient conditions under which it is
used. It is recommended to replace an oxygen sensor when more than one year has passed since
it was taken out of its package.
Avoid mechanical shocks to the oxygen sensors when replacing them.
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