SERVICING
23
Mexico Slimline CF440 -
Installation & Servicing
5.
Inspect the pilot burner and ignition electrode; ensure
they are clear and in good condition.
Check that:
a.
The pilot burner is clean and unobstructed.
b.
The pilot shield is clean and unobstructed.
c.
The ignition electrode is clean and undamaged.
d.
The ignition lead is in good condition and securely
connected.
e.
The spark gap is correct. Refer to Frame 42.
f.
The sightglass is clean and undamaged.
6.
Clean or renew components as necessary.
31 CLEANING THE BURNER ASSEMBLY
1.
Remove the 2 split pins securing the burner end cap.
The cap, together with the circular gauze, can now be
removed from the burner bar. Clean the gauze to
remove any deposits of lint, fluff etc.
2.
Brush off any deposits that may have fallen onto the
burner head, ensuring that the flame ports are
unobstructed, and remove any debris that may have
collected.
Note.
Brushes with metallic bristles MUST NOT be used.
3.
Remove the main burner injector. Check, clean or
replace, as required.
4.
Refit the injector, using an approved jointing compound.
32 CLEANING THE FLUEWAYS
30 BURNER AND CONTROLS ASSEMBLY
2
1
MEX 228
6
MEX 2285
1.
Remove the 2 screws and lift off the front
panel and remove the grille assembly from
the casing. Refer to Frame 29.
2.
Disconnect the electrical
leads from the gas valve.
3.
Disconnect the ignition
lead from the PCB.
4.
Undo the gas service
cock union nut.
5.
Remove the 2 wing nuts
and withdraw the burner
and controls assembly,
complete, from the boiler.
6.
When replacing a
defective main burner
bar it is most important
that the baffles are fitted
to the new burner.
1.
Lift off lower front panel and remove the grille
assembly. Refer to Frames 28 & 29.
2.
Undo the gas cock union. Remove the burner
assembly.
3.
Undo the 2 wing nuts to remove the cleanout
cover.
4.
Lift out the flue baffle.
5.
Remove all loose deposits from the heat
exchanger, especially from between the fins,
using a suitable brush.
Remove all debris from the combustion
chamber base
6.
Check that the flue outlet duct is unobstructed.
SER
VICING
200946-1.p65
3/9/2004, 3:30 PM
23
