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B. TO REPLACE TUNGSTEN-HALOGEN LAMP
1. The step 1- step 5 are the same as the
REPLACING DEUTERIUM.
2. Remove the lamp from the ceramic base.
3. Insert the new lamp (Fig A8), pushing it in as far as it will go.
4. 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. A9. 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 and turn on the instrument. Adjust to make the image central
on the slit, Fig. A9.
Install the grey metal protection cover and instrument cover.
Fig A8
