Glow-worm Ultimate 100FF - Manual (Page 25)

25 221966B
10.2 Cleaning Heat Exchanger and Burner
Disconnect the air pressure tubes, see diagram 5.3.
Remove the blue and red electrical connections from the fan,
see diagram 5.3.
Remove the fan taking care not to damage the gasket, see
diagram 5.3.
Remove the flue hood, see diagram 5.4.
Remove the combustion chamber cover, see diagram 8.2.
Remove the cleaning plate from the combustion chamber
cover, see diagram 8.2.
Disconnect the pilot pipe union connector and pilot burner,
securing nut and shakeproof washer together with the pilot
shield. Remove the pilot burner assembly taking care not to
damage the electrode and lead assembly, see diagram 10.1.
Remove the securing screw from the burner support bracket,
see diagram 10.2.
Remove the main burner from the main injector at the rear.
Raise the burner up and forward, easing the pilot pipe down, to
clear, take care not to damage the combustion chamber insulation
or the pilot pipe.
Use a vacuum cleaner or suitable stiff brush to clean the burner
thoroughly, making sure that all the burner ports are clear and
unobstructed.
Place a sheet of paper in the base of the combustion chamber.
100 FF ONLY
Remove the baffles, see diagram 10.3.
If a vertical or flue bend systems, using corrugated bends, see
Flue Kit Installations, has been fitted then the TOP FLUE
BAFFLES will have been REMOVED.
NOTE: When replacing the bottom three baffles, the two half
and one whole baffle, make sure that they are positioned with
the mark “100” to front of appliance as shown in diagram 10.3.
120 FF ONLY
Remove the baffles, see diagram 10.4.
NOTE: When replacing the bottom baffle, make sure that it is
positioned with the word “Bottom” to front of appliance as shown
in diagram 10.4.
Continued-
The heat exchanger can now be cleaned, paying particular
attention to the gap between the fins, with a suitably sized semi-
stiff brush, using the cleaning plate, as shown in diagram 10.5,
to protect the rear insulation panel.
Remove the paper together with any debris.
10.3 Main Injector
With the main burner removed the main injector can be inspected
and cleaned as necessary, see diagram 10.6.
If removing for cleaning do not use a wire or sharp instrument
on the hole.
Use a little suitable sealant on the external thread when refitting
to make sure a gas tight seal is made.
NOTE: On refitting and after cleaning the heat exchanger make
sure the burner is fitted correctly, that is, located on the main
injector and horizontal.
Diagram 10.2
SECURING
SCREW
BURNER
SUPPORT BRACKET
4296
10 Servicing
Diagram 10.4
BAFFLE (4)
HEAT
EXCHANGER
9642
120FF only
Diagram 10.3
BAFFLE (6)
HEAT
EXCHANGER
9642
100FF only