Varian ProStar 340, Operation Manual

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3. Disconnect the UV lamp lead from the detector by gently
pulling it straight back toward you. DO NOT twist the
connector while pulling (see Figure 11).
4. Unscrew the two thumbscrews holding the lamp mount in
place, and pull the lamp mount straight back towards you.
Be careful not to lose the two aluminum standoffs or the
thumbscrews. Be careful not to get fingerprints on the lamp.
Installing the D2 Lamp
1. Slide the lamp mount onto the alignment dowel located to
the left of the monochromator's aperture (the mount has a
pre-drilled hole to accommodate the dowel), Figure 11A. The
lamp leads should emerge from the top of the lamp.
2. Use the thumbscrews and aluminum standoffs to attach the
lamp assembly to the detector.
3. Connect the lamp lead to the upper of the two terminals in
the lamp compartment.
4. Replace the lamp housing and its retaining screw.
CAUTION
NEVER loosen the screw holding the lamp to the mount, and NEVER attempt to rotate
or move the lamp up or down in the mount. Doing so will degrade the system
performance. The lamp is provided as a pre-aligned assembly.
If the lamp is plugged into the wrong connector, it will fail to light. No harm will be
done.
Tungsten Lamp
The lifetime of the tungsten lamp is approximately 2,500 hours.
To check the tungsten lamp intensity:
1. Power up the unit if it is not already on. Wait approximately
10 minutes.