Cuenod C 100 B 517, Руководство по эксплуатации, Страница: 48 / 52

48
0306 / 13 013 497A
Fuel oil maintenance
•
Check the following if failure occurs:
–
power supply (power and control),
–
fuel supply (valve pressure and
opening),
–
control components,
–
switch positions on TC control
panel.
If problem persists:
•
Check various program symbols
described here below on the control
and safety unit.
Safety components must not be
repaired but replaced by similar items.
m
Only use
manufacturer spare parts.
Note
After each operation:
•
Check combustion and all circuits
for possible leaks.
•
Perform safety checks.
•
Record results in the relevant
documents.
Symbol Fault Cause Corrective action
w
Burner on safety lockout. Parasitic flame on thermostatic cut-off. Check fuel valves for leaks.
Fit a postventilation device.
Fan motor not working.
contactor open. Faulty air pressure.
Thermal relay cut out. Replace air pressure switch.
Reset, adjust or change thermal relay.
P
Fan motor not working. Faulty contactor.
Faulty wiring between contactor and motor
Faulty motor.
Change contactor.
Check wiring.
Replace motor.
z
Fan motor working. Misadjusted or faulty air pressure switch.
Faulty flame monitoring circuit.
Adjust or replace air pressure switch
Check pressure pipes.
Check if cell is clean.
Change control and safety unit.
1 No ignition arc. Ignition electrodes short-circuiting.
Damaged ignition cables.
Faulty ignition transformer.
Control and safety unit. Adjust or replace electrodes.
Replace ignition cables.
Replace ignition transformer
Change control unit.
Electromagnetic valves not opening.
Electromagnetic valves opening
electrically.
Electrical connections broken
Coil(s) short-circuiting.
Mechanical jamming in valves.
Check wiring between unit, servomotor and
motor pump.
Change coil(s).
Change valve(s).
Fuel not getting through. Check fuel oil level in tank, control valve and
prefilter opening.
Check piping vacuum, spray pressure and
booster pump.
Clean pump and prefiltering filter.
Replace nozzles, pump, coupling, motor
pump motor and hoses.
Burner lights up, but flame is unstable
and goes out. Air flap too open and/or fuel oil flow too
high. Adjust air flap and/or fuel oil flow rate
I
x
v
Burner on continuous ventilation but no
flame. Misadjusted combustion head.
Faulty servomotor.
Mechanical jamming of air flap.
Faulty mechanical coupling. Adjust combustion head.
Adjust or change servomotor.
Unblock air flap.
Check or change coupling.
Other incidents
Sudden lockout at any time, not
indicated by any symbol Premature flame signal.
Old cell.
Change control and safety unit.
Change cell.