Cleaning The Burner - Grant EUROFLAME 50/70 User, Installation And Servicing Instructions

See table in section 2.2 or 2.3 for the correct
position. Fig. 24 shows the top baffle plate fitted
on the left hand side when viewed from the front of
the boiler. Changing it to right hand side is simply
a matter of removing the nut, inverting the plate,
and replacing the nut.
7 Replace the cleaning cover, ensuring the seal is in
good condition and secure it in position with the
two nuts and washers previously removed. Tighten
to form a seal.
7.4

Cleaning the burner

See section 10.1
1 Combustion head - Loosen the two screws
securing the combustion head to the burner flange
and withdraw the head. Clean and replace the
combustion head.
2 Inspect the ignition electrodes - With the
combustion head removed, loosen the electrode
clamp screw and withdraw the electrode assembly.
Wipe clean and check for any cracks in the ceramic
insulation. Replace if necessary.
Check the electrode settings - Electrode tips
approximately 4 mm apart and 2 to 2.5 mm (50/70)
or 3 to 3.5 mm (50/90, 70/90 and 90/120) in front
of the nozzle, see Fig 26.
3 Nozzle - Check that the nozzle size and type are
correct, refer to tables in sections 2.2 or 2.3 and
boiler data label. Clean the nozzle with kerosene if
necessary. Do not use a pin or piece of wire to
clean the nozzle.
Replace the nozzle if a build up of carbon is present.
4 ± 0.3 mm
Clamp screw
2 to 2.5 mm (50/70)
3 to 3.5 mm (50/90 - 90/120)
Fig. 26 (70/90 RDB shown)
IMPORTANT: The electrode settings given above
MUST be observed
7 - BOILER SERVICING
Euroflame Oil Boilers
With the combustion head removed, loosen the
electrode assembly clamp screw and slide the
electrodes away from the nozzle. Remove the
nozzle using a good fitting spanner (16 mm). The
use of an ill-fitting spanner will damage the nozzle
and could lead to an incorrect flame pattern.
Always check the electrode settings after replacing
the nozzle, see Fig. 26.
4 Photocell - The photocell is a push-fit in the burner
body. Carefully pull out the photocell to clean.
5 Fan - With the air intake grille or spigot removed,
remove the screws securing the fan housing cover
(R/H side of burner) and remove the cover. Inspect
the fan and housing and clean as necessary.
Replace the cover.
6 Pump filter - With the burner cover removed,
remove the four screws securing the pump end
cover. Remove the filter and wash in kerosene.
Replace the filter and end cover, ensure the 'O' ring
is in position.
Re-assemble in reverse order.
To ensure safe and efficient operation of the boiler
it is important that re-commissioning is carried out,
especially combustion checks (CO
temperature and smoke number) after the boiler
has been serviced.
Refer to the Commissioning instructions starting on
page 29.
level, flue gas
2
33