Replace The Analytical Module - ABB NGC8200 User Manual

10.16 Replace the analytical module

This section presents the procedures for the removal and installation of the analytical module. The
module is a completely self-contained device and is part of the analyzer. Read through all procedural
steps before beginning disassembly.
Verify before beginning the procedure that the replacement module is appropriately rated for the
system voltage. Compare the module voltage to the ID tag located on the side of the enclosure.
NOTICE – Equipment damage. When the analytical module is removed, the module
should be placed on a clean, dirt-free work surface. Take care that gas ports are free from
lint or dust particles. The GC replacement module should be kept in a sealed, static free
envelope until the last possible moment before installation.
It is important that the bottom surface of the module be placed on a clean, lint free cloth to
prevent components from being scratched, damaged or contaminated.
To replace the analytical module:
1. On the Analyzer Operation screen, click Hold under Next Mode. When the device completes the
current cycle and enters hold, continue to the next step.
2. Collect data from the device.
3. Back up the configuration files, following the instructions in section 10.6.
4. Using the instructions in section 10.11, verify that the lithium battery status is OK before
proceeding.
5. Turn off all sample streams, calibration gas and carrier gas.
6. Disconnect or remove the power from the device externally, or remove the J1 connector from
the termination panel.
7. 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.
8. Following the instructions detailed in section 10.14, remove the assembly. If
weather/circumstances permit, the digital controller assembly may be suspended by the cables
to eliminate stress on the cable connections, then and you can move to step 10. If conditions
are adverse, perform step 9.
9. Carefully unplug the cable to the termination panel, leaving the lithium battery plugged in. Set
the digital controller assembly aside on a clean, lint-free surface.
10. Using a 5/16" hex wrench, loosen the mounting screw (see
module in place until the module can be slowly lifted from the enclosure, taking care to not pull
or stress wires attached to the rear of the assembly.
11. Detach the analytical module rear face jack J1 and J4 if the auxiliary heater is installed (see
Figure 10-15).
12. Set the module on a clean, lint-free surface.
13. Verify that the gasket on the feed-through assembly manifold interface is in place, in good
condition and free from metal filings or other contamination. If the gasket has fallen off inside
the enclosure or stuck to the GC module, replace onto the feed-through manifold interface,
ensuring that the gasket does not cover the gas portholes.
14. Verify the S1 auxiliary heater switch is set to the correct position. If using the auxiliary feed-
through heater, set the position to Normal.
15. Insert the mounting screw into the analytical module.
21 01 51 0MN A H | NG C 82 0 0 A N D P GC 10 00 US ER MA NUA L | 1 1 1
Figure 10-14) holding the analytical