20033283
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Faults - Possible causes - Solutions
(1)
The control box is fitted with a disc rotates during the firing programme, which can been seen through the transparent lock-out
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.
Defective control box Replace
Ignition electrode wrongly adjusted Adjust
Grounded electrode due to broken insulation Replace
Pump/motor coupling broken Replace
Ignition transformer defective Replace
The flame ignites normally but
the burner locks out when the
safety time has elapsed
Defective photocell or control box Replace photocell or control box
Dirty photocell Clean
Smoke in flame - dark Bacha-
rach
Not enough air Adjust head and fan gate
Erroneous pump pressure Adjust
Nozzle filter clogged Clean or replace
Boiler room air vents insufficient Increase
Nozzle worn or dirty Replace
Flame disk dirty, loose, or deformed Clean, tighten in place, or replace
Smoke in flame
(yellow Bacharach)
Too much air Adjust head and air gate
Firing with pulsations or flame
detachment, delayed firing
Poorly adjusted head Adjust
Poorly adjusted fan air gate: too much air Adjust
Nozzle unsuited for burner or boiler See Nozzle Table
Defective nozzle Replace
Inappropriate pump pressure Adjust
Poorly adjusted or dirty firing electrodes Adjust
Output during ionisation phase is too high Reduce
The burner does not pass to
2nd stage
Control device TR does not close Adjust or replace
Defective control box Replace
Uneven fuel supply Check if cause is in pump or in the fuel supply
system
Feed the burner from a tank
located nearby
Rusty pump internal parts
Water in tank
Suck water from tank bottom with
separate pump
Noisy pump, unstable pres-
sure
Air has entered the suction line Tighten connectors
Depression value too high (higher than 35 cm Hg):
Tank/burner height difference too great Feed burner with loop circuit
Piping diameter too small Increase
Suction filters clogged Clean
Suction valves closed Open
Paraffin solidified due to low temperature Add additive to gas oil
Pump unprimes after pro-
longed pause
Return pipe not immersed in fuel
Bring to same height as suction
pipe
Air enters suction piping Tighten connectors
Pump leaks gas oil Leakage from sealing organ Replace pump
Dirty combustion head Nozzle or filter dirty Replace
Unsuitable nozzle delivery or angle See recommended nozzles
Loose nozzle Tighten
Impurities on flame stability disk Clean
Erroneous head adjustment or not enough air Adjust, open air damper
Blast tube length unsuited to boiler Contact boiler manufacturer
During operation, the burner
stops in lock out
Dirty or defective photocell Clean or replace
Defective air pressure switch Replace
GAS OIL OPERATION
SYMBOL
(1)
FAULT PROBABLE CAUSE SUGGESTED REMEDY
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