Unigas R75A, Руководство по установке, использованию и обслуживанию

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PART III: OPERATION
35
5.7 (R75A M-..) Center head holes gas flow regulation
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:
z
For natural gas burners, plate holes are fully opened
5.8 (R75A L-..) Center head holes gas flow regulation
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:
z
For LPG burners, plate holes are opened about 1.7mm
5.9 Setting air and gas pressure switches
The
air pressure switch
locks the control box if the air pressure is not the one requested. If it
happens, unlock the burner by means of the control box unlock pushbutton, placed on the
burner control panel.
The
gas pressure switches
check the pressure to avoid the burner operate when the pres-
sure value is not in the requested pressure range.
V
D
closed holes
opened holes
V
D
closed holes
opened holes
VR