M&C TechGroup SP2020-H_C_I_BB_F Operator's manual - Manual (Page 20)

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Gas sampling and gas conditioning technology 2-1.1.6.1-ME
15 MAINTENANCE
The safety instructions specific to the plant and process are to be consulted prior to any maintenance
work! It is difficult to give any recommendations as to a particular maintenance cycle. Depending on
your process conditions, a meaningful maintenance cycle must be elaborated for the specific applica-
tion.
An indication that probe-maintenance may be necessary could be shown by a constant decline in the
amount of sample gas in the analysis system.
Probe maintenance is restricted essentially to replacing filter elements and checking seals.
W A R N I N G !
Aggressive condensate is possible.
Wear protective glasses and proper protective clothing!
High surface temperatures may cause serious burns!
Wear protective gloves!
Prevent the probe of unauthorized access!

Changing the filter element see chapter 12.2

Additionally check O-rings in the lid (PTFE rings for /7aT) and change if necessary.

Clean filter chamber.

It is now also possible to rod through the probe tube in order to remove deposits. Take care to
avoid breakages when handling probe tubes made of alu-oxide.
N O T E !
In order to change prefilters, the entire probe unit must be removed
from the process. The prefilters can be cleaned to an extent de-
pending on the manner of soiling mechanically or in a ultra sonic
bath and can used again.
W A R N I N G !
Prior carrying out maintenance work on electrical parts, mains
voltage should be disconnected from all poles!
This also applies to any external control circuits which may be
connected.
16 SWITCHING OFF
Before switching off, i.e. switching off the heating, the probe be flushed with inert gas or air in order to
avoid condensation of aggressive components from the process gas.