Rae UltraRAE 3000, User Manual

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UltraRAE 3000 User’s Guide
27.3 Cleaning The PID Sensor
Place the entire PID sensor module into GC grade methanol. It is
highly recommended that an ultrasound bath to be used to clean the
sensor for at least 15 minutes. Then dry the sensor thoroughly. Never
touch the electrodes of the sensor by hand.
Also use a methanol-soaked cotton swab to wipe off the lamp housing
where it contacts the sensor when the sensor is installed.
Turn over the sensor so that the pins point up and the sensor cavity is
visible. Examine the sensor electrodes for any corrosion, damage, or
bending out of alignment. The metal sensor electrode “fingers”
should be flat and straight. If necessary, carefully bend the sensor
fingers to ensure that they do not touch the Teflon portions and that
they are parallel to each other. Make sure that the nuts on the sensor
pins are snug but not overtight. If the sensor is corroded or otherwise
damaged, it should be replaced.
27.3.1 Cleaning The Lamp Housing Or Changing The
Lamp
If the lamp does not turn on, the instrument will display an error
message to indicate replacement of the lamp may be required.
1. If the lamp is operational, clean the lamp window surface and the
lamp housing by wiping it with GC grade methanol using a cotton
swab using moderate pressure. After cleaning, hold the lamp up
to the light at an angle to detect any remaining film. Repeat the
process until the lamp window is clean. Never use water solutions
to clean the lamp. Dry the lamp and the lamp housing thoroughly
after cleaning.
CAUTION: Never touch the window surface with the fingers
or anything else that may leave a film. Never use acetone or
aqueous solutions.
2. If the lamp does not turn on, remove the lamp from the lamp
housing. Place the lamp O-ring onto the new lamp. Insert the new
lamp, avoiding contact with the flat window surface.
3. Reinstall the PID sensor module.
4. Tighten the Lamp Housing Cap.
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