Ferroli SUN G50 Operating, Installation And Maintenance Instructions page 39

SUN G50 - G70
The flame is ignited normally,
but the burner shuts down at
the end of the safety time
Ignition with pulsating or
disjointed flame, delayed
ignition
Pump noisy, fluctuating pres-
sure
The pump loses prime after
extended shut-down
Pump leaks oil
Fuel supply irregular
Bacharach soot dark
Bacharach yellow
Combustion head dirty
GB
Electrodes defective or earthed/Replace
Ignition transformer defective/Replace
Electrode cables defective or earthed/Re place
Electrode cables deformed due to high tem perature/Replace and pro tect
Electrical connections to the valve or trans former incorrect /Check
Defective appliance/Replace
Motor-pump joint broken/Replace
Pump inlet connected to the return pipe/Cor rect the con nection
Photo cell defective/Replace
Photo cell dirty /Clean photo cell
Defective appliance/Replace
Head poorly adjusted /Adjust
Ignition electrodes poorly ad justed or dirty /Adjust or clean
Fan damper poorly adjusted, too much air /Ad just
Nozzle not suitable for the burn er or the boiler /See nozzle ta ble
Nozzle defective /Replace
Pump pressure not suitable /Ad just be tween min 10 and max 14 bars
Air in the inlet piping /Tighten the fittings
Too much difference in height between the burner and the tank/Supply burner
using a ring circuit and aux iliary pump
Pipe diameter too small /Increase diameter
Inlet filters dirty /Clean
Oil supply valve closed /Open
Paraffin solidification due to low temperature /Add additive to the oil
Return pipe not immersed in the fuel /Move to same height as the inlet pipe
Air in the inlet piping /Tighten the fittings
Seal device leaking/Replace pump
Supply system or pump blocked or defective /Supply the burner from a tank
located near the burner to iden tify whether the problem depends on the pump
or the system
Insufficient air /Adjust the head and fan damper
Dirty or worn nozzle/Replace
Nozzle filter dirty/Clean or replace
Incorrect pump pressure/Adjust between min 10 and max 14 bars
Flame stability disk dirty, loose or deformed /Clean, tighten or replace
Insufficient ventilation in the boiler room/Check ventilation openings in the
room, clean or enlarge
Excess air /Adjust the head and fan damper.
Head poorly adjusted or insufficient air /Adjust the head, open the air damper
Nozzle or nozzle filter dirty/Replace
Incorrect nozzle angle or flow-rate/Replace
Nozzle loose /Tighten
Impurities from the surrounding environment on the stability disk/Clean
Cod. 35445644 - 08/2007 (Rev. 00)
39