6.7 Furnace cleaning brush - replacing
Scalding/burns
Hot furnace / combustion tube / analyzer parts
Parts of the analyzer can be very hot.
• Use heat protecting gloves.
The furnace is equipped with an auto-cleaning system. This mechanism contains a brush, which
cleans the quartz tube (combustion tube).
For replacing the brush during working time, it is advisable to set the power switch to position 1.
If the replacement is done during a long maintenance break, the power switch can be of course
at position 0.
: Furnace cleaning brush-replacing
• Loosen the cover knobs and remove the cover.
• Open the furnace.
• Remove the knurled nuts (1).
• Unscrew the wing nuts (2).
• Loosen the nuts (3) and detach the tubes (4).
• Remove the furnace cleaning system, by lifting up the mounting (5).
• Hold tight the brush holder (8) and unscrew the heat shield (9), together with its brass
ring.
• Remove and replace the brush (10).
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