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INSTRUCTIONS FOR TROUBLE - SHOOTING AND REPAIRING OPERATING PROBLEMS WITH
PROBLEM
The appliance goes into block with
fl ame on (red light on).
Breakdown limited to the fl ame moni-
toring device.
The appliance goes into block, spraying
fuel, without igniting any fl ame (red
light on).
The breakdown is limited to the ignition
device, with the condition that fuel
is in good shape (not polluted with
water or other), is properly preheated
(when burning fuel oil) and is correctly
atomized.
The appliance goes into block, spraying
fuel, wothout igniting any fl ame (red
light on).
The appliance goes into clock without
spraiyng fuel (red light on).
Nois burner pump
TWO STAGE HEAVY OIL BURNER
HEAVY OIL BURNERS
POSSIBLE CAUSE
1) Photoresistance dirty with soot, or broken
2) Insuffi cient draft
3) Photoresistance circuit interrupted
4) Dirty disk or orifi ce
1) Ignition dirty with soot, or broken
2) The ignition transformer cables are earthed
3) Ignition transformer cables are not well
connected
4) Ignition transformer shorted
5) Tips of electrodes are not at a proper
distance
6) Electrodes discharge to ground because
they are dirty or have broken insulation; also
check below insulation clamp terminals
1) Uneven pump pressure
2) Water in the fuel
3) Insuffi cient preheating of fuel oil
4) Excess combustion - supporting air
5) Air passage between disk and orifi ce too
closed down
6) Worn or dirty nozzle
1) One phase is missing
2) Broken electric motor
3) Fuel oil not reaching pump
4) No fuel oil in the fuel tank
5) Intake pipeline gate valve closed
6) Nozzle clogged
7) Motor (three-phase) rotating in the opposite
direction to that indicated by the arrow
8) Bottom valve leaks or is blocked
9) Defective pump
10)Formation of steam or gas in the preheater,
causing it to fi ll up slowly. (in this case the
pressure gauge will only slowly reach the
preset operating pressure value; too late
with respect to the maximum time permitted
by the programmer)
11)Preheater tank fi lter clogged
12)Broken solenoid valve
13)Atomizing group valve does not open
14)Voltage too low
1) Fuel oil in the tank too viscous
2) Pipeline diameters too small
3) Air entering into the pipelines
4) Dirty fi lter
5) Too great a distance between tank and
burner, or meny accidental load lossen (cur-
ves, elbows, pinches, etc.)
6) Worn hoses
7) Fuel oil too viscous in some part of the
intake pipeline
41 / 80
0006080415 ed2005/08
REMEDY
1) Clean or replace
2) Check all fume passages in the boiler and
in the chimney
3) Replace the appliance
4) Clean
1) Check the entire circuit
2) Replace
3) Clamp them
4) Replace
5) Put them in the proper positions
6) Clean or, if necessary, replace
1) Regulate pump
2) Drain from preheating tank and mesh fi lter
trough the plugs provided. If necessary
drain from the fuel tank using a suitable
pump (never use the burner pump to do
this)
3) Increase preheating
4) Reduce combustion - supporting air
5) Correct position of the combustion head
regulation device
6) Clean or replace
1) Check supply lines
2) Repair or replace
3) Check intake pipeline
4) Fill fuel tank
5) Open
6) Remove and throughly clean
7) Invert one supply phase
8) Dismantle and clean
9) Replace
10)Loosen the preheater tank plug a few turns
and discharge any water. If fuel comes
out instead of water it is likely that the gas
produced inside the preheater comes from
the evaporation of fuel; Therefore regulate
the temperature on the control thermostat,
lowering it to below 100 °C. Also check
the inclination of the tank as described in
the chapter "Application of the burner to
the boiler"
11)Dismantle and clean
12) Check and, if necessary, replace
13)First check that fuel is at the proper
pressure, then, if necessary, replace the
atomizing group
14)Enquire of the electric company
1) Preheat in the tank or replace with a more
fl uid oil
2) Replace pipelines, in accordance with
installation instructions
3) Find and eliminate any infi ltrations
4) Dismantle and clean
5) Straighten out the path travelled by the
intake pipeline, reducing the distance
6) Replace hoses
7) Properly insulate the pipeline
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