Emerson Rosemount CT5400, Installation, Operation And Maintenance Manual

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19. Fit the gas output line as described in Section 7.22 .
20. Fit the gas input line as described in Section 7.21 .
21. Refit the top cover as described in Section 7.25 .
7.24 Cleaning the analysis cell mirrors
Only clean the mirrors inside the analysis cell in a clean area.
It is possible that the mirrors inside the cell may become contaminated; for example,
contaminants may be carried into the cell in water droplets in the gas being sampled. The
mirrors may be cleaned to remove any contamination from them.
Prerequisites
Observe all safety precautions before starting this procedure.
DANGER!
ELECTRIC SHOCK
The analyzer operates using mains voltage that is dangerous to life. Make sure that the power
ON/OFF switch at the rear of the panel is set to OFF and tagged off before removing the top
cover.
The analyzer must be earthed.
Death or personal injury may result if this is not observed.
To gain access to the electrical, pneumatic, and optical components, it is necessary to
remove the top cover.
Procedure
1. Power down the analyzer and allow to cool.
2. Remove the analyzer from the rack and place to a stable workbench. This step
requires two people to properly lift and transport it to the workbench.
3. Remove and retain the four screws attaching the top cover to the chassis.
4. Open the insulation around the analysis cell. Pull open the two side flaps (B and D)
and the two end flaps (C) and then fold out the top insulation (A).
Troubleshooting and diagnostics
124 Rosemount CT5400