System has detected irregularities in
the gas flow, which indicates a possible
blockage or restriction in the reactor,
Reactor Valve (MV3), Sample Valve
(MV4) or associated tubing and fittings.
See Reactor Purge Check and Reactor
Purge Band defined in Pressure/Flow
Test Program menu 8.3.4.5
Pressure/Flow Test Program.
Various, for example, partially
blocked reactor.
Faulty/blocked Reactor Valve
and/or Sample Valve.
Partially blocked tube after MFC.
Faulty MFC.
Air and oxygen supply problem.
Check oxygen pressure looking at
the Oxygen Controller Status (O2-
CTRL STATUS) menu. It should
be 400mbar (±10mbar) at 20 l/h
MFC flow.
Run Flow Test (see Section
8.1.1.2 Flow Test for details).
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