11/2009 - Art. Nr. 4200 1018 3800A 23
Servicing
Maintenance
Replacing the flame tube
For this operation, it is necessary to
either open the furnace gate or remove
the burner.
- Variant 1 - Access via the furnace gate
• Remove the burner head
• Loosen the 3 securing screws S on the
flame tube support by 1 to 2 turns.
(Allen 3).
• Open the combustion chamber door.
• Take out the flame tube, check it,
clean it and, if it is deformed, replace
it.
• Proceed in the reverse order for
refitting.
• Fill in the space between the furnace
gate and the burner tube with fire-
resistant material.
• Close the furnace gate.
- Variant 2 - Removing the burner
• Remove the burner head.
• Loosen the electrical connections.
• Loosen the burner housing (2 M8
screws) and remove. Do not damage
electrical cables.
• Unscrew the burner head and then
proceed as under variant 1.
• Proceed in the reverse order for
refitting.
The flame tube may be hot
Cleaning the air box
First check that the air flap is in the
closed position (0°), before
removing it (2 screws V).
• Unscrew the three securing screws T
in the base of the housing by a few
turns.
• Shift the air intake box 113 to the right
to release the screws (bayonet).
• Remove the air intake box, clean it and
refit it in reverse order.
• Check that the air flap and the
servomotor are correctly positioned.
Cleaning the cover
• Do not use abrasive products or
products containing chlorine.
• Clean the cover with water and a
suitable cleaning product.
• Refit the cover.
Precautions
After any operation: check the
combustion performance under real
operating conditions (doors shut,
cover fitted etc.). Record the results
in the relevant documents.
Checking the flue gas temperature
• Check the flue gas temperature at
regular intervals.
• Clean the boiler if the flue gas
temperature is more than 30 °C above
the value measured at the time of
commissioning.
• Use a flue gas temperature gauge to
make the check easier.
Gas valves
The gas valves do not require special
maintenance.
It is not permitted to carry out repairs on
a gas valve. Defective valves must be
replaced by a qualified engineer who
must then carry out a leak, function and
combustion test.
Filter replacement
• The filter element of the multiblock
must be checked at least once a year
and replaced if clogged.
• Loosen the screws of the filter cap on
the multiblock.
• Remove the filter element and clean
its housing.
• Do not use any pressurised cleaning
products.
• Replace the filter element with a new
element. Screw the lid back on.
• Reopen the manual shut-off valve.
• Check it is airtight.
• Check the combustion values.
en
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