SERVICING
29
Mexico Super CF495 - CF4140
-
Installation & Servicing
47 MAIN BURNER INJECTOR REPLACEMENT
8
Burner
manifold
MEX 2149
Gas cock union
7
4
Ignition
lead
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.
Undo the pilot supply connection.
7.
Undo the manifold securing nuts and
remove the manifold from the front
plate.
8.
Unscrew the burner injectors from the
manifold.
9.
Fit the new injectors, using an
approved jointing compound, and
reassemble in reverse order.
47 GAS VALVE REPLACEMENT
Gas control
valve
Gas inlet
pipe
Pilot supply connection
MEX 2150
Burner manifold
6
7
4
8
'O' ring seal
Securing
screws
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.
Undo the pilot supply connection.
7.
Unscrew the gas inlet pipe from the valve.
8.
Remove the 4 securing screws and withdraw the valve
from the burner manifold.
9.
Fit the new gas valve, ensuring that:
a.
The valve is fitted the correct
way round - an arrow engraved
on the valve indicates the
direction of flow.
b.
The sealing 'O' ring supplied
with the valve is correctly fitted
at the outlet flange.
c.
An approved jointing compound
is used when reconnecting the
gas inlet pipe.
SER
VICING
200944-1.p65
3/8/2004, 3:41 PM
29
