Agilent Technologies 1100 Series Reference Manual page 29

The installation of the detector is now complete.
NOTE
The detector should be operated with the front cover in place to protect the flow cell
area against strong drafts from the ouside and to cover the deuterium lamp.
Some types of the Agilent deuterium lamps show a light ring during operation. This is
not harmful, refer to
1100 Series DAD and MWD Reference Manual
UV-Radiatio
on page 307.
29
Installing the Detector 1