420010399600
MULTICALOR 170.1 -200.1 P AB
EN
MAINTENANCE
YEARLY CONTROLS
The periodical check of the burner (firing head, electrodes etc.) must be carried out one or two times a year, by authori-
sed personnel only. Before proceeding with the controls for the maintenance, it should be advisable to check the general
status of the burner as follows:
-
Disconnect the burner from the power supply
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Turn off the gas cut-off cock
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Remove
the burner’s cover and clean fan and the air intake
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Clean the firing head and check the electrodes position
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Reassemble the whole
-
Check the piping sealing – Check the chimney
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Start the burner while verifying the combu-
stion parameters.
FAULT FINDINGS BEFORE ANY INTERVENTION VERIFY WHAT FOLLOWS:
The burner must be duly connected to power supply
-
cut-off cock must be open and the gas pressure is the correct
one. The control and safety devices must be duly connected
-
If the above conditions are met, start the burner by
pushing the lockout disable button and check the burner’s cycle.
THE BURNER DOES NOT START
Verify the ON/OFF switch, the thermostats, the motor and the gas pressure. The selector switch is set to 0 position.
The fuses are blown. The control box is faulty.
THE BURNER PRE-PURGES THEN STOPS
Check the air pressure and the fan
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Check the air pressure switch
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Check control box (faulty)
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The ignition transfor-
mer is faulty
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Check the ignition cable
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Check electrodes (dirty, faulty or in a wrong position)
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Check nozzles (clog-
ged or worn out)
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Check filters (clogged)
-
Light-oil pressure too low
-
Air flow rate too high for nozzle’s output.
THE BURNER PRE-PURGES BUT DOES NOT IGNITES
Check the correct position of the electrodes
-
Check the ignition cable
-
Check the ignition transformer
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Check the
control box.
THE BURNER IGNITES THEN STOPS AFTER THE SAFETY TIME
Check that phase and neutral are connected in the right way
-
Check gas solenoid valve
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Check the position of ionisa-
tion probe and related connection
-
Check control box
-
Check nozzles (clogged or worn out)
-
The photoresistor does
not “see” the flame.
-
Check filters (clogged)
-
Light-oil pressure too low
-
Combustion air flow rate too high for the
nozzle’s output.
THE BURNER IGNITES THEN STOPS WITHIN FEW MINUTES OF WORKING
Check pressure governor and gas filter
-
Check gas pressure through a manometer
-
Check ionisation values (must be
200 µA at least).
THE BURNER DOES NOT SWITCH TO HIGH FLAME
High/Low selector switch wrongly set
-
Check control box (faulty)
-
Oil valve’s coil faulty
-
Light-oil pressure too low
-
Check filters (clogged)
-
Check nozzle (worn out or clogged)
-
Air damper motor jack faulty or wrongly adjusted.
The burners are produced with connections suitable for power supply 400 V three-phase.
The burners with electric motors of an output lower or equal to 7,5 kW can be adapted to 220-230 V (please follow the
instructions on the backside); motors with higher output can only work 380-400 V three-phase.
In case of request of burners different from the above mentioned standard, it is recommended to make specific mention
in the order.
Instructions: how to adapt electric motors of an output lower or equal to 7,5 kW to 220-230 V power supply
It is possible to change the voltage of the burner by operating as follows:
1. change the connection inside the electric box of the motor, from star to delta (see picture);
2. change the setting of the thermal relay, referring to the absorption values indicated in the
motor nameplate. If necessary, replace the thermal relay with another one of suitable scale.
This operation is not possible on motors above 7.5 kW.
For more information, please contact the Ecoflam staff.
230V
400V
