Unigas G400A - BACKUP PARAMETER WITH AZL2 x

PART IV: MAINTENANCE
48
Electrodes Adjustment
Adjust the electrodes position, according to the quotes shown othe next picture
Replacing the ignition electrodes
Cleaning/replacing the electrodes
ATTENTION: avoid the ignition and detection electrodes to contact metallic parts (blast tube, head, etc.), otherwise the
boiler’s operation would be compromised. Check the electrodes position after any intervention on the combustion head.
ATTENTION: avoid the ignition and detection electrodes to contact metallic parts (blast tube, head, etc.), otherwise the boi-
ler’s operation would be compromised. Check the electrodes position after any intervention on the combustion head.
ATTENTION: avoid the electrodes to get in touch with metallic parts (blast tube, head, etc.), otherwise the boiler
operation would be compromised. Check the electrodes position after any intervention on the combustion head.
E
V
H
G
T
G
7
A
B
A = 4
B = 8
electrodes - type A
To replace the ignition electrodes, proceed as
follows:
1 remove the burner cover;
2 loose the nuts that fasten the electrodes
group to the combustion head (A);
3 disconnect the electrodes cables (B);
4 loose the security dowes of the adjusting ring
nut (C);
5 shift the electrodes group back to the outside
and remove the combustion head (D);
6 loose the screw of th eignition electrodes sup-
port (E);
7 remove the electrodes and replace them
paying attention to the measures showed in
figure (F-G);
8 reassemble the burner by fllowing the proce-
dure in the reversed order.
A
BC
DE F