Unigas PBY1025 Manual Of Installation - Use - Maintenance page 35

Progressive, fully-modulating heavy oil burners
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Maintenance of the gas governor with filter (pilot gas train)
Before disassmbling the device, be sure that there is no pressurised gas inside it.
To check the filtering part (1) on threaded bodies (see Fig. 36):
remove the bottom cover, unscrewing the fixing screws;
remove the filtering part (1), clean it with water and soap, blow it with compressed air or replace it if necessary;
reassemble the filtering part in its initial position checking that it is placed in its own slots (see Fig. 37);
reassemble the bottom cover (3), being sure that the main bolt is centered in the bottom cover slot.
4
3
Fig. 36 - threaded body
Removing the combustion head
Remove the cover H.
Slide the photoresistor out of its housing.
Unscrew the flexible hoses from the gun (burner side) and remove the whole assembly as shown on Fig. 38.
C.I.B. UNIGAS - M039126CE
1
2
Fig. 37 - threaded body without bottom cover
Fig. 38
35
filter slots

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