elco VECTRON L 04.410 DUO, Operating Instructions Manual, Page: 30 / 48

05/2005 - Art. Nr. 13 018 078A 30
Servicing
Maintenance
All boiler and burner servicing work
should be carried out by an
appropriately trained heating service
specialist. It is recommended to
enter into a maintenance contract in
order to ensure that servicing is
carried out at the intervals
prescribed.
m
·
Shut down power supply BEFORE
carrying out servicing or cleaning
work of any kind.
·
Close fuel-oil shutoff valve
·
Use only original spare parts.
Check the combustion head
·
Remove burner housing.
·
Remove photoelectric cell 1 and wipe
with a clean, dry cloth.
·
Unplug ignition cable 2 on
transformer side and loosen nozzle
tube.
·
Loosen the three cover screws S .
·
Rotate cover (twist and lock) and
remove burner head.
·
Replace nozzle.
·
Check ignition electrodes and ignition
cable
2 , and replace as required.
·
Clean turbulator.
·
Check settings when assembling.
Cleaning the fan wheel
·
Loosen the five screws on the motor
plate.
·
Remove the equipment plate.
·
Check fan housing and fan wheel for
dust and clean as necessary.
·
Reassemble.
Cleaning the air box
·
Loosen the three nuts on TF .
·
Rotate burner (twist and lock) and
place on ground.
·
Loosen the four screws on the air
box.
·
Clean air box and sound-insulating
foam to remove dust.
·
Refit the air box.
Replacement of the flame tube
To carry out this procedure, the
combustion chamber door must be
opened or the burner removed.
1) Access via combustion chamber
door:
·
Loosen the 3 fixing screws on the
flame tube support by one to two
turns. Precautions: The screws are
threaded to the left (Inbus 3).
·
Remove the flame tube, check, clean,
and replace where deformed.
·
Refit the flame tube.
·
Fill the space between the
combustion chamber door and flame
tube with fireproof material, if
necessary.
2) Removal of the burner
·
Remove the ignition/combustion
head.
·
Loosen the electrical connections.
·
Loosen the burner housing (2 M10
screws) and remove. Do not damage
electrical cables.
·
Unscrew the burner head and then
proceed as for variant 1.
·
Refit in the reverse sequence.
Cleaning the pump filter
·
The filter is located inside the pump
housing. It should be cleaned each
time the system is serviced.
·
Close the fuel-oil shutoff valve.
·
Place a suitable container under the
pump to collect fuel-oil as it flows out.
·
Remove the screws and take off the
cover.
·
Remove the filter and clean or replace.
·
Refit filter, reinstall cover with a new
seal and shut tightly.
·
Check that screws are correctly
tightened.
·
Open fuel-oil shutoff valve once more.
·
Check for correct pressure and for
leaks.
Cleaning the cover
·
DO NOT used chlorine-based or
abrasive products.
·
Clean the cover with water and a
suitable cleaning product.
·
Refit the cover.
Precautions
After each intervention:
·
Check combustion performance and
examine the individual conduits for leaks
under real operating conditions (doors
shut, cover fitted, etc.).
·
Note down the results in the
corresponding report forms.
Checking the exhaust-gas
temperature
·
Check the exhaust-gas temperature
at regular intervals.
·
The boiler must be cleaned whenever
the exhaust gas temperature exceeds
the startup setting by more than 30 K.
·
To simplify the checking procedure, a
flue-gas temperature gauge should
be fitted.