Flow Cell Maintenance 19
3
Chapter 3
Maintenance
This chapter covers maintenance of the Waters 2996 Photodiode Array Detector flow cell,
lamp, and fuse.
3.1 Flow Cell Maintenance
The flow cell requires maintenance when:
• The reference spectrum changes.
• The cell fluid leaks out of the drain tube.
• The Lamp diagnostic (in the Millennium
32
PDA Diagnostics window) fails and the
lamp status light is on (Table 2-1).
• The 2996 Detector causes high backpressure.
Note: Conditions other than a dirty flow cell may cause decreased lamp intensity. For
more information, refer to Chapter 2, Diagnostics and Calibration.
Flow cell maintenance consists of:
• Flushing the flow cell
• Removing the flow cell
• Disassembling and cleaning the flow cell
• Installing the flow cell assembly
Caution: To avoid possible electric shock, do not remove the 2996 Detector power
supply covers. The power supply does not contain user-serviceable components.
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