PART III: MAINTENANCE MANUAL
14
Correct posiotion of electrodes and combustion head
Fig. 18
Tab. 3
TROUBLESHOOTING
Mod.
A
B
C
D
G18 SP
PG25 SP
PG30 TN
8 mm
4 mm
5,5-6,5 mm
8-10 mm
CHECK OF THE IONIZATION CURRENT
To check the detector signal follow the prcedure shown in Fig.
19. If the signal is not within the prescribed range, check the
electrical contacts; check also that the combustion head is
clean and the photoelectric sensor is correctly positioned.
Replace it if necessary.
Minimum current with flame: 65 µA
Maximum current without flame: 5 µA
Maximum possible current with flame: 200 µA
Fig. 19
T
H
E
B
URNE
R
D
O
ES
N
'T S
T
AR
T
T
H
E
B
URNE
R
R
EPEA
TS T
H
E
PR
EPU
R
G
U
E
ST
AG
E
N
O
IS
Y O
IL
PU
M
P
T
H
E
B
URNE
R
D
O
ES
N
'T S
T
AR
T
A
ND L
O
CK
S
T
H
E
B
URNE
R
STAR
T
S
T
H
EN
LO
C
K
S
T
H
E
B
URNE
R
L
O
CK
S
DURI
NG OP
E
R
A
T
IO
N
T
H
E
B
URNE
R
L
O
CK
S
AN
D
R
E
PEAT
S T
H
E
CI
CL
E
DURI
NG
OP
E
R
A
T
IO
N
MAIN SWITCH OPEN
●
LINE FUSES INTERRUPTION
●
MAX. THERMOSTAT FAILURE
●
●
AUXILIARY FUSE INTERRUPTION
●
FLAME CONTROLLER FAILURE
●
●
●
●
●
SMOKY FLAME
●
●
IGNITION TRANSFORMER FAILURE
●
DIRTY IGNITION ELECTRODES OR BADLY
POSITIONED
●
DIRTY NOZZLE
●
DEFECTIVE LIGHT OIL VALVE
●
●
PHOTORESISTANCE DIRTY OR DEFECTIVE
●
●
LIGHT OIL LOW PRESSURE
●
DIRTY LIGHT OIL FILTERS
●
●
●
11 12
SCALE µA DC
FLAME CONTROLLER
Summary of Contents for G18 SP
Page 18: ...PART III MAINTENANCE MANUAL 18 SPARE PARTS Burner G18 SP...
Page 20: ...PART III MAINTENANCE MANUAL 20 Burners PG25 SP PG30 TN...
Page 29: ...APPENDICX COMPONENTS CHARACTERISTICS 29...
Page 30: ...APPENDICX COMPONENTS CHARACTERISTICS 30...
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