Thermo Scientific Accela UV/Vis Plus, Hardware Manual

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3
Routine Maintenance
Lamp Maintenance
Thermo Scientific Accela UV/Vis Detector Hardware Manual 49
Accessing the Deuterium Lamp and Reading Its Chronometer
The deuterium lamp assembly is equipped with a chronometer that tracks the total hours of
lamp operation.

To access the deuterium lamp and read its chronometer
1. Turn the detector off, unplug the detector from line power, and allow sufficient time for
the lamps to cool before you remove the lamp cover.
2. Open the front doors of the detector.
3. Using the 1/8 in. ball-end hex screwdriver (supplied), unscrew the captive retaining screw
on the lamp cover ( Figure 48 ).
Figure 48. Lamp cover retaining screw
4. Pull the cover off to expose the lamp assemblies.
Because intense UV light can damage your eyes, the lamps automatically turn off when
you turn off the detector or remove the lamp cover.
CAUTION Turn the detector off and unplug the power cord from the power
receptacle on the back panel as a secondary precaution against the possibility of
exposing yourself to a UV light hazard.
Because intense UV light can damage your eyes, the lamps automatically turn off
when you turn off the detector or remove the lamp cover.
CAUTION Because the lamps run hot, turn off the power and allow sufficient time
(approximately 30 minutes) for the lamps to cool before you remove the lamp cover.
Lamp cover
retaining screw