Methanizer/Air Cleanup Repair - ABB PGC2000 Operation And Service Manual

5. Carefully install and tighten the Electrode Nut.

METHANIZER/AIR CLEANUP REPAIR

It is the customer's responsibility to ensure that the area is safe and and hazard-
free, and will remain so the entire time the analyzer is open. This responsibility
includes ensuring adequate ventilation in analyzer shelter and obtaining proper
work permits, etc.
See "AIR PURGING" in Section 4 for the X Purge override function. Do not perform
override until you have read Section 4 completely and you understand and can
perform the procedure properly.
Let the Methanizer/Air Cleanup Assembly cool a minimum of 30 minutes prior to
disassembly. Internal surface temperatures can cause severe burns if they are
touched before they have cooled.
No asbestos is used in any assembly or component part of the Methanizer/Air
Cleanup Assembly. Therefore, all residual insulating materials may be disposed of
without regulator restrictions.
The high temperatures present under normal operating conditions can cause
wiring insulation to become brittle and fragile.
Ceramic temperature probes should always be considered fragile. When servicing
the Methanizer/Air Cleanup Assembly, these component parts must be handled
with great care to avoid damage.
The analyzer uses two different types of Methanizer/Air Cleaner Assembly, Type 781 and Type 805.
These are essentially the same except for appearance.
The Methanizer/Air Cleanup Assembly comes from the factory supplied with both air cleanup and
methanizer tubes. The larger tube is used for air cleanup and the smaller tube for the methanizer. If
a tube is not being used, its inlet and outlet connections will be plugged. It is necessary to replace
only the tube that is in use.
8-34
CAUTION
2000-OSM, F1