Perkin-Elmer Lambda 20, Installation And Maintenance Manual

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Lambda 20, Lambda 40 UV/Vis Spectrometers
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6. Unpack the new lamp assembly, taking care to hold it only by the metal mount
to prevent fingermarks on the lamp window.
7. Slip the slot at the base of the lamp mount over the stud on the bracket in the
lamp compartment and then secure with the thumbscrew.
8. Plug the deuterium lamp connector into the socket.
NOTE: The socket in the lamp compartment is asymmetric; the deuterium lamp connector can
be inserted in one direction only. Make certain that the connector is the right way
round before inserting it. Never attempt to insert the connector by force.
9. Wipe the lamp window with a soft cloth moistened with alcohol to remove dirt,
since this would otherwise be burned in when the lamp is hot.
10. Replace the lamp baffle using the reverse of the procedure described in step 3.
11. Replace the lamp compartment cover.
This completes the deuterium lamp replacement procedure.
Lamp Energy Attenuator
An attenuator is located in the lamp compartment between the deuterium lamp and
the beam entrance slit.
If required you can decrease or increase the energy by placing the attenuator into, or
taking the attenuator out of, the beam.
The attenuator is set at the factory, normally in the out position.
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