YL9120 UV/Vis Detector
4) If the displayed value is less than a half of the original intensity, the lamp should be replaced to
new one. Generally, you have to consider the lamp exchange when the light intensity of reference
energy is less than 5 nA.
4-2-1. How to remove the Tungsten lamp
1) Make sure that the power cord is disconnected from the rear panel of the detector.
2) Unscrew the screws and remove the lamp assembly on the right front panel.
CAUTION ; The light of Tungsten lamp can damage eyes and skin. Always disconnect the power cord
before working in the vicinity of the lamp. The W lamp gets quite hot. Care must be taken while
handling it to prevent from burning. Always allow the lamp to cool before removing it.
3) Disconnect the Tungsten lamp from the detector by gently pulling it straight back toward you. DO
NOT twist the connector while pulling.
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 thumbscrews. Be careful not to get fingerprints
on the lamp.
[Fig. 6] Tungsten lamp assembly
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