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Maintenance
28
Checking the exhaust gas temperature
· Check the exhaust gas temperature.
· Clean the boiler if the exhaust gas
temperature is over 30 K above the
start-up value.
Checking the ignition electrodes
and the mixing unit.
· Disconnect the 2 ignition cables
from the ignition transformer.
· Remove the grommet for the two
cables from the cover by pressing
into the burner head.
· Unscrew completely the 3 screws
securing the cover.
· Slip the cover off over the cables.
· Loosen the side screw securing the
mixing unit.
· Pull out the mixing-ignition unit.
· Check the condition of the turbulator.
· Check the position of the ignition
electrodes and the turbulator.
· If necessary, remove dust from the
parts accessible with the cover
removed.
· Check the presence and condition of
the O-ring seal J1 when assembling.
09/2005 - Art. Nr. 13 019 526A
Burner and boiler servicing can only
carried out by a trained specialist.
The system operator is advised to
take out a service contract to
guarantee regular servicing.
N.B.:
Before maintenance and cleaning work,
completely separate the burner from
the mains, including the power supply
AC motor, and close the gas ball valve.
A1 Combustion control unit
A4 Display and operating unit
B10 Ionisation bridge
F6 Air pressure switch
F12 Protective motor relay
K1 Motor contactor
M1 Burner motor
T1 Ignition transformer (concealed)
Y10 Servomotor air flap
7
Control panel
8
Blast tube
13
Burner cover
113 Air box
Cleaning the fan
· Disconnect the motor by unplugging
it from the power supply.
· Unscrew the 7 screws of the motor panel.
· Remove the panel and motor, taking
care not to damage the gas
pressure tube of the differential air
pressure switch.
· "Dry" clean the air pressure pipes.
· Do not use pressurised materials.
· Take out the 4 screws securing the
air guiding piece.
· Thoroughly clean the air duct and fan.
· Reassemble.
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