51
9. Re-fit the grey metal protection cover, Fig. A4. Temporarily re-fit the
main cover and fix with two screws, one each side.
Switch on and remove the grommet from the middle of the rear
panel. You can now look through the hole and view the image of
the lamp on the slit. Check the lamp alignment Fig. A7. If the image
is not covering the slit, the lamp alignment needs adjustment. This
requires running the UV-2802 without the covers, with high voltages
accessible, and so should only be performed by a suitably qualified
engineer.
If adjustment is required, remove the cover and grey protection
cover, put on UV protection glasses and turn on the instrument.
Adjust to make the image central on the slit, Fig. A7.
Install the grey metal protection cover and cover of instrument.
Fig A7
CAUTION: Wear UV protection glasses when replacing deuterium
lamp.
10. Re-fit all the screws around the sides of the spectrophotometer, Fig.
A1.
11. Re-set the lamp usage time. Select Utility, lamp, and re-set D2 usage
time.
Focus on
the slit
