Waters 2489, Operator'S Manual

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Scanning spectra 3-63
Recommendation: Waters recommends that you program the lamp to shut off
or turn the lamp off manually only if the “Lamp off” time is more than 4 hours.
Without powering off the system, you can conserve lamp life by
• turning power to the lamp off and on again manually.
• programming a timed event to turn the lamp off and on again.
• programming the lamp to turn off and on again using the external
contact closure.
To turn power to the lamp on and off manually, use the Lamp keypad function
(Shift 1). When the lamp is turned off, the absorbance screen displays the
words “Lamp off” and the lamp icon appears with an X through it.
Use the Lamp key (Shift 1) to
• shut the lamp off or turn the lamp on manually.
• display the number of times the lamp has ignited.
• display the hours and minutes the lamp has been turned on during the
current run and/or since installation.
To turn off the lamp manually from the detector front panel:
1. Press Lamp (Shift 1) from the keypad. The lamp control screen appears.
Lamp control screen
The lamp control screen shows
• the amount of time, in hours and minutes, the lamp has been on
since the most recent startup.
• the total time the lamp has been on since installation.
• the number of times the lamp has been fired up.