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GAS OIL OPERATION
SYMBOL
FAULT
(1)
1
The flame ignites normally but
the burner locks out when the
safety time has elapsed
Smoke in flame - dark Bacha-
rach
Smoke in flame
(yellow Bacharach)
Firing with pulsations or flame
detachment, delayed firing
The burner does not pass to
2nd stage
Uneven fuel supply
Rusty pump internal parts
Noisy pump, unstable pres-
sure
Pump unprimes after pro-
longed pause
Pump leaks gas oil
Dirty combustion head
During operation, the burner
stops in lock out
The control box is fitted with a disc rotates during the firing programme, which can been seen through the transparent lock-out
(1)
reset button.
When the burner does not fire or comes to a half following a fault, the symbol which appears behind the reset button indicates the
type of problem.
20034985
Faults - Possible causes - Solutions
PROBABLE CAUSE
Defective control box
Ignition electrode wrongly adjusted
Grounded electrode due to broken insulation
Pump/motor coupling broken
Ignition transformer defective
Defective photocell or control box
Dirty photocell
Not enough air
Erroneous pump pressure
Nozzle filter clogged
Boiler room air vents insufficient
Nozzle worn or dirty
Flame disk dirty, loose, or deformed
Too much air
Poorly adjusted head
Poorly adjusted fan air gate: too much air
Nozzle unsuited for burner or boiler
Defective nozzle
Inappropriate pump pressure
Poorly adjusted or dirty firing electrodes
Output during ionisation phase is too high
Control device TR does not close
Defective control box
Check if cause is in pump or in the fuel supply
system
Water in tank
Air has entered the suction line
Depression value too high (higher than 35 cm Hg):
Tank/burner height difference too great
Piping diameter too small
Suction filters clogged
Suction valves closed
Paraffin solidified due to low temperature
Return pipe not immersed in fuel
Air enters suction piping
Leakage from sealing organ
Nozzle or filter dirty
Unsuitable nozzle delivery or angle
Loose nozzle
Impurities on flame stability disk
Erroneous head adjustment or not enough air
Blast tube length unsuited to boiler
Dirty or defective photocell
Defective air pressure switch
38
GB
SUGGESTED REMEDY
Replace
Adjust
Replace
Replace
Replace
Replace photocell or control box
Clean
Adjust head and fan gate
Adjust
Clean or replace
Increase
Replace
Clean, tighten in place, or replace
Adjust head and air gate
Adjust
Adjust
See Nozzle Table
Replace
Adjust
Adjust
Reduce
Adjust or replace
Replace
Feed the burner from a tank
located nearby
Suck water from tank bottom with
separate pump
Tighten connectors
Feed burner with loop circuit
Increase
Clean
Open
Add additive to gas oil
Bring to same height as suction
pipe
Tighten connectors
Replace pump
Replace
See recommended nozzles
Tighten
Clean
Adjust, open air damper
Contact boiler manufacturer
Clean or replace
Replace
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