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Unscrew the V screw that fastens the combustion head and remove the head from the nozzle-holder (Fig. 21 - Fig. 22).
In order to remove the nozzle, it is important to use two wrenches as shown in Fig. 22,to avoid damaging the bur-
ner component plate!
Reassemble the combustion head by respecting the position "A" measured previously, making sure to fasten the V screw
(Fig. 21).
IMPORTANT: the electrodes (E in Fig. 20b) must be positioned at the sides of the combustion head.
NOTE: When re-assembling the component plate, make sure that the pin for the air damper "P" enters its housing
"B" (see Fig. 20b).
Check the detection current
See the diagram in Fig. 23, to measure the detection current. If
the signal doesn't suit the suggested value, verify the electric
terminals, the cleaning of the combustion head and the posi-
tion of the photoelectric cell and replace it if required.
Minimum current intensity with flame: 65 µA
Maximun current intensity without flame: 5 µA
Maximum possible current intensity with flame: 200 µA
V
Fig. 21
PART III: MAINTENANCE MANUAL
Fig. 22
FLAME CONTROL DEVICE
SCALE µA DC
Fig. 23
11 12
17
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