Detcon PI-600 - Manual (Page 26)

2) If skilled technicians are available, replace just the UV lamp every 9-12 months.
3) For abnormally high rates of signal decay, clean the UV lamp monthly, using a Lamp Cleaning Kit, and replace the
UV lamp every 9-12 months.
4) For any proven cases where the zero baseline has drifted up, replace the detector cell.
3.8.5.2 PID Plug-In Sensor Maintenance Procedure
All piD Sensor Cells contain six user replacable parts.
Disassembly
1) Power down the instrument and remove the sensor cell.
2) Remove the f iltercap by applying a slight upward pressure with the tip of a screwdriver or an Exacto Blade just
below the hole in the cap and between the cap and the housing.
3) With a f ine tipped tweezers, remove both of the Filter Media and set aside.
PI-600 Toxic Gas Sensors PG.26