Replacing Feed-Through Interface Gasket; Instructions; Replacing Feed-Through Manifold Gasket - ABB NGC8206 User Manual

5.20 Replacing Feed-through Interface Gasket

Should the feed-through interface gasket require replacement (see
follow these instructions. Typically, the user would change the gasket while
performing another procedure, but for the purposes of this manual, the instructions
will start and finish as a complete procedure.

5.20.1 Instructions

1) On the Analyzer Operation screen, click Hold under Next Mode. When the
2) Collect data from the unit.
3) Back up the configuration files, following the instructions detailed previously in
the section,
4) Turn off all the sample streams, calibration gas and carrier gas.
5) Using a 7/32" hex wrench, loosen and remove all 8–¼" hex socket screws.
6) If space permits, lift the external plate away from the internal plate and remove
the damaged gasket from the internal plate. If space does not permit lifting the
plate away enough to replace the gasket, remove the sample input lines and the
carrier and calibration gas lines.
7) Remount the external plate and remove the input lines. To remove the input
lines, continue to the next step; otherwise, skip to step 8.
8) Using a ¼" open end wrench, loosen the Valco nut and remove the input line.
Repeat for all sample, carrier and calibration gas lines.
9) Remove the 8–¼" hex socket mounting screws.
10) Remove the damaged gasket from the internal plate.
11) Clean the gasket area on the internal plate using a clean, dry lint-free cloth
before placing the new gasket on the internal plate. The gasket is keyed to
ensure that it is placed correctly. The gasket should not cover any holes in the
internal plate.
12) Reseat the external plate, aligning the mounting pins on the internal plate to the
corresponding holes on the external plate.
13) Replace the 8–¼" mounting screws, using a star pattern when tightening the
screws.
14) If the sample, carrier and calibration gas lines were removed, purge air from the
transport tubing, and reconnect to the corresponding ports.

5.21 Replacing Feed-through Manifold Gasket

Should the feed-through manifold gasket require replacement (see
follow these instructions. Typically, the user would change the gasket while
performing another procedure, but for the purposes of this manual, the instructions
will start and finish as a complete procedure.
5.21.1 Instructions
1) On the Analyzer Operation screen, click Hold under Next Mode. When the
2) Collect data from the unit.
2101510 Rev. AG
unit completes the current cycle and enters hold, continue to the next step.
Backing Up Configuration Files
Do not over-tighten. After securing the tubing, check for gas
leaks.
unit completes the current cycle and enters hold, continue to the next step.
Figure
(Save).
Figure
5-12),
5-12),
Page 5–27