Glow-worm 45/2 Back Boiler - Manual (Page 16)

16 221780A
5199
5200
Diagram 8.4
Diagram 8.5
8 Servicing
SHAKEPROOF
WASHER (2)
LUG
LINT
ARRESTER
BURNER
SUPPORT
SLOT
SECURING
NUT (2)
MAIN BURNER
INJECTOR
SECURING SCREW (4)
SUPPLY PIPE
FLANGE
ELECTRODE
THERMOCOUPLE
BBU
LOWER
SENSING
TUBE
PILOT TUBE
NUT
THERMOCOUPLE
NUT
PILOT TUBE
SECURING
NUT
IGNITION
LEAD
SPARK GAP
3
+1
-0.5
FRONT VIEW
TOP VIEW
ELECTRODE
EARTH
POST
EARTH
POST
SILICONE
SLEEVE
SECURING
SCREW(2)
UNION NUT
AND LINER
Clean the lint arrester as necessary.
Inspect the main burner injector for damage or blockage, clean
or replace as necessary using a small amount of approved
jointing compound, on the external thread.
Inspect the ignition lead for wear or damage, clean or replace
as necessary, see diagram 8.4.
Inspect the thermocouple for wear or damage, clean or replace
flue blockage safety device as necessary, see diagram 8.4.
Inspect the electrode for wear or damage, clean or replace flue
blockage safety device as necessary, see diagram 8.4.
Inspect the flue blockage safety device sensing tube filter for
damage or blockage, clean or replace as necessary, see
diagram 9.4.
8.4 Refitting Burner Assembly
When refitting the lint arrester make sure that the lug is fitted into
the slot on the burner support bracket, see diagram 8.5.
Position the pilot shield around the pilot tube, ignition lead and
thermocouple, see diagram 8.3, and refit.
Loosely replace the gas valve control securing screws, see
diagram 8.2. Refit the two screws shown in diagram 8.1, which
locate the burner support to the combustion chamber extension.
Refit the lower sensing tube nut into the bulkhead connection.
Then fully tighten the gas valve securing screws.
Before replacing the burner and controls assembly into the back
boiler the following servicing should be carried out.
8.5 Cleaning Back Boiler Flueways
Remove the burner assembly as Section 8.3.
Undo the two screws securing the fire front sensing tube, if
fitted, and remove, see diagram 8.6.
Undo the two steel screws securing the flue collector assembly,
see diagram 8.7 and remove the flue collector assembly.
Undo the two stainless steel screws securing the diverter plate,
see diagram 8.8 and remove the diverter plate by sliding it
forward.
Lift out the flue baffle, see diagram 8.9.
Lift out the 3 flueway baffles, see diagram 8.9.
Clean the back boiler flue ways with a suitable stiff brush.
Note. A sheet of paper placed in the back boiler combustion
chamber will help in collecting any debris.
To make sure that the flueways are clean, view with the aid of
a mirror or reflector.
8.6 Refitting Flue Collector Assembly and
Final Reassembly
Refit the 3 flueway baffles.
When refitting the flue baffle make sure that the four corner lugs
fit correctly into the back boiler flueways, see diagram 8.9.
When refitting the diverter plate make sure that the plate is
correctly fitted into the guide channels as shown in diagram 8.8
and replace the two stainless steel securing screws.
Refit the flue collector assembly and if fitted the fire front
sensing tube.
Refit the burner and controls assembly to the back boiler.