WATERS CORPORATION 2424, Operator'S Manual, Page: 105 / 196

Conserving lamp life 3-41
2. Press 6 Clear events. A message screen appears.
Clear events message
3. If you press Enter
• all timed and threshold events in the method are cleared.
• all other operating parameters of the method (LSU-FS, etc.) are
unaffected.
If you press Cancel (press Shift, 0), the Method choice list appears.
4. When you return to the Home screen by pressing HOME, the method
number icon displays an asterisk.
Conserving lamp life
To conserve the tungsten lamp, extinguish it while allowing the detector to
remain powered-on. You can do this in three ways:
• Manually
• By programming a timed event
• By programming the lamp itself via the external contact closure
Tip:
If you are operating the detector remotely, you can program the controller
to extinguish the lamp without using the detector’s front panel.
Recommendation:
Regardless of whether you program the lamp to shut off or
extinguish it manually, ensure that the “lamp off time” value is greater than 4
hours.
To manually extinguish and reignite the lamp, use the Lamp key. When the
lamp is extinguished, the Home screen displays the words “Lamp off” and the
lamp icon appears with an X through it.