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INSTRUCTIONS FOR DETERMINING THE CAUSE LEADING TO IRREGULARITIES IN THE
OPERATION OF LIGHT OIL BURNERS, AND THEIR ELIMINATION
IRREGULARITY
Appliance locked out due to no flame (red
light lit).
The fault is in the flame control device.
The equipment goes into “lock-out”, gas
flows out, but there is no flame
(red light on).
Fault in ignition circuit.
The burner goes into “lock-out”,
gas flows, but there is no flame
(red light on).
POSSIBLE CAUSE
1) Disturbance to ionisation current from ignition
transformer.
2) Inefficient flame sensor (ionisation probe).
3) Flame sensor (ionisation probe) position
incorrect.
4) Ionisation probe or relative earth cable.
5) Flame sensor electrical connection cut-off.
6) Inefficient draught or fumes passage blocked.
7) Flame disk or combustion head dirty or worn.
8) Faulty equipment.
9) No ionisation.
1) Fault in ignition circuit.
2) Ignition transformer cable discharges to earth.
3) Ignition transformer cable disconnected.
4) Ignition transformer failure
5) The distance between electrode and earth
is incorrect.
6) Isolator dirty, therefore the electrode
discharges to earth.
1) Air/gas ratio incorrect.
2) Gas piping has not been properly bled of air
(in the case of first ignition).
3) The gas pressure is insufficient or
excessive.
4) Air passage between disk and head too closed.
SOLUTION
1) Invert the ignition transformer power supply
(230V side) and check using an analogue
micro-ammeter.
2) Replace the flame sensor.
3) Correct the position of the flame sensor, and
then check its efficiency by connecting the
analogue micro-ammeter.
4 ) V i s u a l l y c h e c k a n d u s e t h e
instrument.
5) Restore the connection.
6) Ensure that the boiler fumes passage and
chimney connection are free.
7) Visually check and replace if necessary.
8) Replace it.
9) If the “earth” of the equipment is not efficient,
the ionisation current cannot be checked.
Check the efficiency of the “earth” at the
terminal concerned in the equipment and at
the “earth” connection of the electric system.
1) Check the ignition transformer power supply
(230V) and high voltage circuit (electrode to
earth or isolator broken under locking terminal).
2) Replace it.
3) Connect.
4) Replace it.
5) Position at the correct distance.
6) Clean or change isolator and electrode.
1) Correct the air/gas ratio (there is probably
too much air or very little gas)
2) Bleed the gas pipe again, taking great care.
3) Check the gas pressure value
at the time
of ignition
(use a water pressure gauge,
if possible).
4) Adjust the disk/head opening.
Summary of Contents for TBG 50 LX PN
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