MAINTENANCE
7-4
7.2 PID Sensor & Lamp Cleaning /
Replacement
The sensor module is made of several components and is
attached to the lamp-housing unit as shown in Figure 7-2.
Figure 7-2 Sensor Components
Note: Normally the cleaning procedure is not needed.
Clean the PID sensor module, the lamp and the lamp
housing only when one of the following happened:
1. The reading is inaccurate even after calibration.
2. The reading is very sensitive to air moisture.
3. A chemical liquid has been sucked into the unit and
damaged the unit.
Use of the water trap filter will help prevent contamination
and accidentally drawing liquid into the sensor.
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