28
Defective flame with sparks
Flame badly shaped with smoke and
soot
Defective pulsating escaping flame
or receding from the combustion ori-
fice
Corrosion inside the boiler
Soot at the chimney exit
1) Atomizing pressure too low
2) Too much combustion air
3) Inefficient nozzle, either fouled up
or worn out
4) Water in the fuel
1) Insufficient combustion air flow
2) Inefficient nozzle, either fouled up
or worn out
3) Combustion chamber unsuitably
designed or too small
4) Delivery nozzle inadequate in re-
spect to the combustion chamber
size
5) Refractory lining unsuitable or ex-
cessive
6) Boiler or chimney ducts clogged
7) Low atomizing pressure
1) Excessive draught (only when there
is a suction fan in the chimney)
2) Inefficient nozzle, either fouled up or
worn out
3) Water in the fuel
4) Dirty disk
5) Excessive combustion air flow
6) Air passage between disk and blast
tube
1) Boiler operating temperature too
low (below the dew point)
2) High sulphur content in the fuel
3) Smoke temperature too low (below
180 °C)
1) Excessive cooling (below 180°C) of
smoke before exit outflow, for an out-
side chimney not adequately heat in-
1) Re-set it at the required rating
2) Reduce combustion air flow
3) Clean it or replace it
4) Remove it from the tank using a
suitable pump (never use the
burner pump for this job)
1) Increase combustion air flow
2) Clean or replace it
3) Reduce the nozzle delivery rate to
suit the combustion chamber ca-
pacity or replace the boiler
4) Increase nozzle delivery rate by re-
placing it
5) Modify it or make it lighter accord-
ing to boiler manufacturer’s in-
structions
6) Clean them
7) Rectify and re-set at the required
value
1) Adjust the suction fan speed by
changing the pulley diameter
2) Clean or replace it
3) Remove it from the tank with a suit-
able pump (never use the burner
pump for this job)
4) Clean it
5) Reduce combustion air flow
6) Rectify the position of the blast tube
1) Increase the operating temperature
2) Change grade of fuel
3) Increase the nozzle delivery rate by
replacing it
1) Improve insulation and close any
gap letting cold air in
Содержание BT 180 DSG
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