GE AKTApure, User Manual, Page: 360 / 522

8.3 Troubleshooting: Monitors
In this section
• UV monitor and UV detector
• Conductivity monitor
• pH monitor and pH valve
• Pressure monitors
UV monitor U9-M and UV detector unit
Possible cause and action Problem
• Communication problem
Contact Service.
• The cable between the UV module and the ICU is not connected
Remove the UV module and make sure that the cable is connect-
ed.
• Wrong Node ID
Check the module´s Node ID. If necessary, change the Node ID.
See Node ID, on page 77.
The UV module is not found
by the instrument
• The detector is not correctly fitted
Contact Service.
• Unclean optical fiber connectors
Clean the connectors. See Section 7.8.5 Replace the UV monitor
U9-M flow cell, on page 325.
• Dirt on optical sensors in detector
Remove visible dirt on detector photo diodes.
Use lint free lens paper winded around a thin wood splinter (e.g
a match or toothpick). Clean the sensors with Isopropanol through
the small hole of the metal plate which covers the sensors. Dry
the sensors with clean and dry lint free lens paper.
• Worn-out or broken lamp
Contact Service.
Too low UV lamp intensity
360 ÄKTA pure User Manual 29119969 AB
8 Troubleshooting
8.3 Troubleshooting: Monitors