P 1, 2, 3 & 5000 Ex Ion Science Ltd
Page 43 of 52
Maintenance
1.
Keep the PID detector lamp window clean.
2.
Replace the sample filters on a regular basis.
Frequency of cleaning the detector lamp and replacement of the filter depends on the type of
gas being detected and the quality of the background air. See page 51 for details of parts
expected life time.
Cleaning the P Lamp
The P PID relies on an ultraviolet light source ionising VOC gases as they pass across the lamp
window. This process may result in a very fine layer of contamination appearing on the detector window that
must be removed on a regular basis.
CAUTION!
The P is a sensitive detector. Internal components must be handled with clean hands and
clean tools. The P lamp is fragile. Handle with great care!
1.
Ensure that the P is switched OFF.
2.
Remove the probe and filter
.
3.
Unscrew the black knurled ring to expose the
detector lamp.
4.
Push a lamp-removing sleeve over the end of the
lamp. This allows the user to grip the glass.
5.
Extract the lamp from its socket by pulling it in a
straight line away from the PID cell. Force is only
required when pulling the lamp past the O ring.
Once past the O ring the lamp will move freely.
WARNING!
NEVER REFIT A DAMAGED LAMP!
Passed the
O-ring
Move freely in
a straight line
