Unigas HTP512A, Installation, User'S, And Maintenance Manual

Page: 41 / 60

C.I.B. UNIGAS - M039219CA
41
Adjusting the electrodes position
Adjust the electrodes position, according to the quotes shown on the next picture.
Fig. 41
Replacing the spring in the gas valve group
To replace the spring in the gas valve group,proceed as follows:
1 Carefully twist the protection cap 1 and the O-ring 2.
2 remove the “set value” spring 3 from housing 4.
3 Replace spring 3.
4 Carefully insert the new “set value” spring. Pay attention to mount properly. First insert the spring part with smaller diameter in the
housing.
5 Place O-ring 2 in protective cap 1. Screw in the protective cap with the O-ring in it.
6 Stick the adhesive label for spring identification on the type plate.
Cleaning and replacing the detection photocell
The photocell working life is about 10000 working hours (about 1 year), at max 50°C after
which it must be replaced.
To clean/replace the detection photocell, proceed as follows:
1 Disconnect the system from the electrical power supply.
2 Shut off the fuel supply;
3 remove the photocell from its slot (see next figure);
4 clean the bulbe if dirty, taking care not to touch it with bare hands;
5 if necessary, replace the bulb;
6 replace the photocell into its slot.
DUNGS MBC..SE SKP Siemens actuator
U
E
TG
Keys
E
electrodes
TA air pipe
TG ignition gas pipe
U nozzle
TA
3
1
2
4
4
1
1
3