FBR FGP 50/2 EVO-2 - Troubleshooting Common Faults

MAINTENANCE
070002_3_B
FGP 50/2 EVO-2
14
POSSIBLE CAUSES - SOLUTIONS
TYPE OF IRREGULARITY PROBABLE CAUSE RIMEDY
The control-box stops
with flame (red light on).
The failure is limited to the
flame-controlling device.
1) Photoresistance is cut off or dirty with
smoke.
1) Clean or replace it.
2) Insufficient draught. 2) Check all smoke circuits inside the boiler
and the chimney.
3) The photo-resistance circuit is broken. 3) Replace the control-box.
4) Dirty disk or mouth. 4)To be cleaned.
Not well-shaped flame with
smoke and soot.
1) Insufficient combustion air. 1) Increase combustion air.
2) Insufficient nozzie since it is dirty or worn
out.
2) Clean or replace it.
3) Clogged boiler pipe or chimney. 3) Clean them.
4) Low spraying pressure. 4) Bring it to the prescribed value.
The burner does not start 1) Open contact in (Boiler or room)
thermo-stats or pressure-switches.
1) Increase the value or wait for them to
close by natural
decrease in temperature or pressure.
2) Short-circuited photo-resistance. 2) Replace it.
3) There is no voltage because of the
an open contact in the main switch or the
meter overload-release, or no
voltage in the line.
3) Close the contact of the switches or
wait for voltage to be supplied again.
4) The thermo-stats line was not carried
out according to the diagram or
thermo-stats did not close their contacts.
4) Check thermo-stat connections.
5) Failure inside the control-box. 5) Replace it.
Defective flame with sparks. 1) Spraying pressure is too low. 1) Bring it to the expected value.
2) Too much combustion air. 2) Decrease combustion air.
3) Insufficient nozzle since it is dirty or worn
out.
3) Clean or replace it.
4) Water in fuel. 4) Discharge it from the tank by using a su-
itable pump
(never use the burner pump to carry out
this operation).
The control-box stops the burner
without spraying fuel (red light on).
1) There is one phase missing. 1) Check the feeder line.
2) Insufficient electric motor. 2) Repair or replace it.
3) Light-oil does not reach the pump. 3) Check the suction pipe.
4) No light-oil inside the tank. 4) Fill with fuel.
5) Closed gate-valve in suction pipe. 5) Open it.
6) Clogged nozzle 6) Disassemble and clean it completely.
7) Motor (three-phase) rotating in the op-
posite direction as that indicated by the ar-
row.
7) Invert a phase in the input switch.