Manual

18
221691B
8 Servicing
BURNER SERVICING
Diagram 8.8
Diagram 8.7
REMOVAL OF BURNER FROM
COMBUSTION CHAMBER /
SUPPLY FEED PIPE
SUPPLY
FEED PIPE
MAIN
BURNER
GRAPHITE
COATED
NUT(2)
INJECTOR
0939
GRAPHITE
COATED
NUT (2)
SUPPLY
FEED
PIPE
MAIN
BURNER
COMBUSTION
CHAMBER
COVER
0931
BURNER
SUPPORT
BRACKET
SCREW (2)
Diagram 8.6
FLUEWAY
BAFFLE
HEAT
EXCHANGERS
6139
8.2 Burner and Injector
Follow instructions to remove the cover, burner and controls
assembly as in Section 8.1.
Remove the two screws and nuts securing the burner support
bracket to the combustion chamber cover, see diagram 8.7.
Remove the graphite coated nuts on the supply feed pipe at the
rear of the burner to release the burner, take care not to damage
the pilot burner and shield when removing.
Clean burner thoroughly.
Check the main burner injector for blockage or damage and
replace if necessary, see Section 9.2 and diagram 8.8.
8.3 Service Checks
Inspect the pilot burner, thermocouple and clean or replace as
necessary. If necessary remove the pilot shield by removing the
securing screw and nut.
Check the condition of the side and rear insulation panels in the
combustion chamber.
Check the condition of the seals on the cleaning door and the
combustion chamber cover.
Replace all items in the reverse order, relight and test the boiler.
HEAT
EXCHANGERS
FLUE
BAFFLE
FLUEWAY
BAFFLE
Diagram 8.5
6141