10.1.8.2 Replacing the combustion tube
The combustion tube on the analyzer must be serviced or replaced at least once a month, or:
• If the combustion tube is damaged
• If there are greatly fluctuating carbon or sulphur levels
• After approx. 1000 analyses
Never operate the machine without a combustion tube.
Replace the combustion tube on the analyzer as follows:
1. Turn the main switch on the analyzer to Position 0 and pull out the power plug.
2. Wait until the analyzer has cooled down sufficiently.
3. Remove the furnace cleaning system, see “Replacing the furnace cleaning brush and
thermal shield”.
The following diagram shows the bottom end plate of the furnace on the analyzer:
Fig. 17: Bottom end plate of the furnace on the analyzer
4. Unscrew the wing nuts on the bottom end plate of the furnace (1) and (2). Hold the
combustion tube tight from above and remove the bottom end plate of the furnace and the
O-ring.
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