Waters 2475, Operator'S Manual, Page: 11 / 228

Table of Contents xi
Parameters used for sample and zero-scans ................................................ 3-58
Programming a zero-scan.............................................................................. 3-59
Running a sample scan.................................................................................. 3-60
Scanning using a static flow cell ................................................................... 3-64
Managing results ............................................................................................. 3-65
Storing a spectrum......................................................................................... 3-65
Getting information about a stored spectrum.............................................. 3-66
Reviewing a stored spectrum ........................................................................ 3-66
Creating a difference spectrum (subtracting a spectrum)........................... 3-67
Replaying a spectrum .................................................................................... 3-67
Conserving lamp life ...................................................................................... 3-67
Manually extinguishing the lamp................................................................. 3-68
Manually lighting the lamp........................................................................... 3-69
Using a timed event method to program the lamp ...................................... 3-70
Shutting down the detector .......................................................................... 3-70
4 Maintenance Procedures ..................................................................... 4-1
Contacting Waters technical service ............................................................ 4-2
Maintenance considerations .......................................................................... 4-2
Safety and handling......................................................................................... 4-2
Spare parts ....................................................................................................... 4-3
Routine maintenance ....................................................................................... 4-3
Removing the front-left-hand panel cover...................................................... 4-4
Inspecting, cleaning, and replacing the flow cell ..................................... 4-5
Flushing and passivating the flow cell ........................................................... 4-5
Removing the flow cell assembly .................................................................... 4-6
Replacing the flow cell ..................................................................................... 4-7
Replacing the lamp ........................................................................................... 4-8
When to replace the lamp................................................................................ 4-8
Removing the lamp .......................................................................................... 4-9
Installing the new lamp................................................................................. 4-12
Recording the new lamp’s serial number ..................................................... 4-13