Removing Digital Controller Assembly; Instructions - ABB NGC8206 User Manual

5.11.1 Instructions

1) On the Analyzer Operation screen, click Hold under Next Mode. When the unit
completes the current cycle and enters hold, continue to the next step.
2) Turn off the calibration and/or carrier gas at the bottle.
3) Remove the regulator from the bottle.
4) Exchange the bottle with the full bottle.
5) Re-install the regulator into the bottle. Verify that the pressure regulator is set
correctly to either 15 PSIG for calibration gas or 90 PSIG for carrier gas. Open
the shut-off valve on the regulator.
6) At the NGC feed-through assembly, loosen the nut and ferrule from the
corresponding inlet, allowing air to purge from the line.
7) Re-insert the ferrule and nut into the correct inlet and tighten.
8) Leak test connections at the bottle regulator and feed-through assembly.
9) In PCCU, with unit still in hold, run two single cycles. Inspect the chromatograms
to determine if the unit is processing correctly. If Chroms are OK, return the unit
to normal operation.

5.12 Removing Digital Controller Assembly

This section presents the procedures for removal and installation of the digital
controller assembly and mounting bracket. If the user has been directed here from
another procedure, return back to the corresponding procedure when disassembly
is complete.
5.12.1 Instructions
1) On the Analyzer Operation screen, click Hold under Next Mode. When the unit
completes the current cycle and enters hold, continue to the next step.
2) Gain access to the digital controller assembly by loosening the countersunk hex
socket locking set screw in the front end cap using a 1/16" hex wrench then
unscrewing the end cap.
3) Using a flat blade screwdriver, loosen the screw in the mounting clamp.
4) Unplug the ground cable from the digital controller assembly.
5) Slide the assembly off of the thermal flask, being careful to not unplug the flat
ribbon cable connecting the digital controller assembly to the termination panel or
the lithium battery.
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Be sure to follow the requirements of the national and local
codes when performing this purge.
As with all electronic components, caution should be used
when handling boards. Static electricity can potentially damage
board components, voiding any warranty.
2101510 Rev. AG