Waters 2475 - Replacing the lamp

4-8 Maintenance Procedures
3. Insert the new flow cell assembly into the detector.
4. Tighten the captive screws.
5. Confirm that the flow cell seats properly.
6. Reconnect the inlet/outlet tubing.
7. Start the detector.
8. Calibrate (see page 3-35) and normalize (see page 3-36) the detector.
Replacing the lamp
This section describes the procedure for removing and replacing the xenon
lamp.
The 2475 detector source lamp is warranted to light and pass startup
diagnostic tests for 2000 hours or 1 year from the date of purchase, whichever
comes first.
Tip: Always perform the procedure on page 3-34 each time you change the
lamp.
When to replace the lamp
Replace the lamp when either of these conditions applies:
• It fails to ignite on startup.
• The lamp’s energy level causes a decrease in sensitivity to the point
where the baseline is too noisy for your LC application.
Performance requirements and permitted tolerances vary from application to
application. If the lamp no longer provides an adequate signal-to-noise ratio
for your specific application, replace it.
Warning: Always use protective eye wear when replacing a lamp.