GE MOA 280i, Operation And Maintenance Manual

Page: 174 / 211

GE Analytical Instruments ©2006
15-6
DLM 14291 Rev. A
Figure 15-2: Schematic of NOA-Procedure for Cleaning Reaction Cell.
•
Turn off the main power switch and remove the AC power cord from the power
entry module.
•
Allow the analyzer to stand for a couple of hours (overnight is best) so the PMT can
warm to room temperature.
•
Make sure the power cord is disconnected, and then remove the NOA cover by
removing the phillips-head screws on the side of the analyzer.
•
Carefully lift the cover off the NOA.
•
Remove the two coaxial cables connected to the PMT socket.
•
In order to minimize exposure of the PMT to light, turn off the room lights
before removing the PMT.
•
Unscrew the PMT socket counterclockwise until the socket is clear of the
cooler.
•
Remove the PMT from the cooler, but leave the PMT in the socket.