TVOC MANUAL
Ion Science Ltd
Page 25 of 32
8
Maintenance
5. The PID Cell’s Metal Spring
Cover can be pulled off
using moderate force. The
Electrode Stack and PID
Lamp can then be removed
by holding the PID Cell
upside down.
WARNING:
Ensure the Electrode Stack and
PID Lamp fall onto a soft surface
such as a piece of tissue. This will
avoid damaging the parts as they
fall out and avoids finger contact
with the PID Lamp window.
6. Clean the PID Lamp using
Alumina Powder loaded
onto a cotton bud.
Rub the Cotton Bud /
Alumina power on the
PID Lamp Window using
a circular motion until a
light audible squeak can
be heard.
NOTE:
Contamination of the Lamp
Window can considerably reduce
the detection capability of the PID
Cell, even when the contamination
is not visible.
Cleaning of the lamp should be carried out on
a regular basis depending on the duty cycle of
the PID Lamp and the environment.
Electrode
Stack
PID Lamp
Metal Spring
Cover
Alumina Powder
Cotton Bud / Alumina
Powder
