GE AKTA avant User Manual page 364

8 Troubleshooting
8.3 Troubleshooting: Monitors
Problem
Too low UV lamp inten-
sity
No light transmission
through the UV cell
Autozero out of accept-
ed range
364
Possible cause and action
The detector is not correctly fitted
•
Check that the detector is fitted correctly. See Sec-
tion 7.8.4 Replace the UV monitor U9-M flow cell, on
page 342 . If this error is recurrent, contact Service.
Unclean optical fiber connectors
•
Clean the connectors. See Section 7.8.4 Replace the
UV monitor U9-M flow cell, on page 342.
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.
Wrong wavelength for current buffer
•
Change wavelength or buffer.
Dirt in the UV flow cell
•
Clean the UV cell. See Section 7.5.1 Clean the UV flow
cell, on page 283.
Unclean optical fiber connectors
•
Clean the connectors. See Section 7.8.4 Replace the
UV monitor U9-M flow cell, on page 342.
Broken UV flow cell
•
Replace UV flow cell. See Section 7.8.4 Replace the UV
monitor U9-M flow cell, on page 342.
Wrong wavelength for current buffer
•
Change wavelength or buffer.
Unclean optical fiber connectors
•
Clean the connectors. See Section 7.8.4 Replace the
UV monitor U9-M flow cell, on page 342.
ÄKTA avant User Manual 29035184 AE