Unigas HTP90A, Руководство по установке, использованию и обслуживанию

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Adjusting the electrodes position
Adjust the electrodes position, according to the quotes shown on the next picture.
Fig. 28
Рис . 29
Replacing the spring in the gas valve group
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.
U
E
TG
Keys
E
electrodes
TA air pipe
TG ignition gas pipe
U nozzle
TA
1
3
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 pro-
perly. 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.
SKP Siemens actuator