ACF5000 FTIR ANALYZER SYSTEM | OI/ACF5000-EN REV. A 145
Seal integrity test
CAUTION! Do not use any leak search spray or similar leak search tools in the under-
pressure area of the analyzer system. These media may result in damage to
the analyzer system in the event of a leak.
Complete seal integrity test of the analyzer system
Complete seal integrity tests of the analyzer system are reserved for certi-
fied service personnel.
It should be carried out regularly during each maintenance work, at least
every 12 months.
They must be performed after gas paths within the analyzer system have
been opened and following a restart from cold.
Simplified seal integrity test of the sample gas path
NOTICE The simplified seal integrity test is not suitable for testing the overall ana-
lyzer system for seal integrity. Therefore, it cannot replace the regular com-
plete seal integrity test in particular (see above).
When must the simplified seal integrity test be performed?
A simplified seal integrity test must be performed in the following cases:
Following work on the gas sampling probe (e.g. filter replacement),
following replacement of the sample gas line,
following replacement of the sample gas filter in the ASP block.
The simplified seal integrity test serves to check the seal integrity of the
analyzer system, from the gas sampling probe to the ASP block.
Simplified seal integrity test via oxygen measurement
This method is based on connecting oxygen and observing the oxygen
measured value.
1 Feed-in nitrogen, either locally or via the gas sampling probe.
2 Observe the oxygen measured value. After a running-in time of approx.
5 minutes with local feed-in or 20 minutes with feed in via the gas sam-
pling probe, the oxygen measured value should drop to approx. 0.08%.
3 Failure to do so indicates a leak in the selected gas path (see Piping
diagram in the system documentation).
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