SERVICING
28
Mexico Super CF495 - CF4140
-
Installation & Servicing
46 MAIN BURNER REPLACEMENT
1.
Refer to Frame 38.
2.
Remove the 2 screws, lift off the lower front panel then
remove the grille assembly. Refer to Frame 30.
Front plate
Main burner
Burner manifold
MEX 2145
Pilot burner assembly
Main burner injector
5
8
45 IGNITION ELECTRODE REPLACEMENT
Detail of pilot burner assembly
MEX
2278
Detail of pilot flame length and spark gap
3.
Disconnect the electrical leads from the gas valve.
4.
Disconnect the ignition lead from the PCB.
5.
Undo the gas cock union. Remove the 4 wing nuts and
MEX 2277
withdraw the burner and
controls assembly, complete,
from the boiler.
6.
Remove the 2 nuts and
washers securing the bottom
burner baffle and remove the
baffle.
7.
Remove the 2 screws
securing the pilot burner and
pull the assembly clear of the
main burner.
8.
Remove the 4 nuts and
washers securing the
burner(s) to the front plate and
manifold. Withdraw the
burner.
9.
Fit the new burner(s) and
reassemble in reverse order,
taking care not to damage the
main burner injector which is
screwed into the burner
manifold.
1.
Refer to Frame 38.
2.
Remove the 2 screws, lift off the lower front panel
then remove the grille assembly. Refer to Frame 30.
3.
Disconnect the electrical leads from the gas valve.
4.
Disconnect the ignition lead from the PCB.
5.
Undo the gas cock union. Remove the 4 wing nuts and
withdraw the burner and controls assembly, complete,
from the boiler.
6.
Remove the electrode retaining nut and withdraw the
electrode.
7.
Fit the new electrode and reassemble in reverse order.
SER
VICING
200944-1.p65
3/8/2004, 3:41 PM
28
