Unigas K590X-FGR EA, Руководство по установке, использованию и обслуживанию

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PART IV: MAINTENANCE
43
Center head holes gas flow regulation (natural gas burners)
To adjust the gas flow, partially close the holes, as follows:
1
loosen the three V screws that fix the adjusting plate D ;
2 insert a screwdriver on the adjusting plate notches and let it move CW/CCW as to open/close the holes;
3 once the adjustmet is performed, fasten the V screws.
The adjusting plate correct position must be regulated in the plant during the commissioning.
The factory setting depends on the type of fuel for which the burner is designed:

For natural gas burners, plate holes are fully opened
Center head holes gas flow regulation (LPG burners)
To adjust the gas flow, partially close the holes, as follows:
1
loosen the three V screws that fix the adjusting plate D ;
2 insert a screwdriver on the adjusting plate notches and let it move CW/CCW as to open/close the holes;
3 once the adjustmet is performed, fasten the V screws.
The adjusting plate correct position must be regulated in the plant during the commissioning.

9xA series : 1,5 mm 5xxA series : 1,3 mm
Flame detection probe
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;
replace the photocell into its slot.
Removing the combustion head

Remove the cover C .

remove the electrodes cables;

unscrew the 3 screws V which hold in position the gas manifold G and pull out the complete group as shown in the picture below.

Clean the combustion head by a compressed air blow or, in case of scale, scrape it off by a scratchbrush.
Device
Flame detector Minimum detection signal
Siemens LMV2x/3x
QRA 70 µA (intensity of flame >24%)
Attention: before adjusting the combustion head, turn the burner off and wait until it gets cold.
V
D
A:
opened holes
B:
closed holes
B
A
V
D
A:
opened holes
B:
closed holes
B
A
QRA... ( )
QRA... ( )
2
X10-06
+