SERVICING
23
Mexico Super CF495 - CF4140
-
Installation & Servicing
31 BURNER AND CONTROLS ASSEMBLY REMOVAL
5.
Inspect the pilot burner and ignition electrode -
ensure that they are clear and in good condition.
Check that:
a.
The pilot burner is clean and unobstructed.
b.
The ignition electrode is clean and undamaged.
c.
The ignition lead is in good condition and securely
connected.
d.
The spark gap is correct. Refer to Frame 44.
6.
Clean or renew components as necessary.
32 LINT GAUZE REMOVAL
33 CLEANING THE BURNER ASSEMBLY
Gas service
union nut
Combustion
chamber
Wing nuts
MEX 2143
1.
Remove the 2 screws and lift off the
front panel and remove the grille
assembly from the casing. Refer to
Frame 30.
2.
Disconnect the electrical leads from the
gas valve.
3.
Disconnect the ignition lead from the
PCB.
4.
Remove the manifold nuts to remove
both burners from the burner front plate
/ manifold assembly.
5.
From each burner remove the 2 air box
securing nuts and CAREFULLY remove
the air box and venturi arrangement.
6.
Withdraw both lint gauzes.
1.
Remove the 2 screws and lift off the front
panel and remove the grille assembly from
the casing.
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 4 wing
nuts and withdraw
the burner and
controls assembly,
complete, from the
boiler.
MEX 221
0
1.
Clean the lint gauze(s) to remove any deposits of lint, fluff
etc.
2.
Brush off any deposits that may have fallen on to 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 injectors. Check, clean or
replace, as required.
4.
Refit the injectors, using an approved jointing compound.
MEX
2223
SER
VICING
200944-1.p65
3/8/2004, 3:41 PM
23
