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Mexico Super FF440 - FF480 -
Installation & Servicing
SERVICING
58 BURNER AND CONTROLS ASSEMBLY REMOVAL
1.
Remove the silicon rubber tube from the sensing point.
2.
Disconnect the fan leads.
3.
Remove the M4 screw securing the flue connector to the
fan.
4.
Slacken the M4 screw securing the flue connector to the
turret front panel.
5.
Disconnect the silicon rubber tube from the top of the
collector hood.
6.
Remove the 4 M4 screws on the top of the collector hood
and by sliding it forwards remove collector hood/fan
assembly.
7.
Check that the fan impellor runs freely. Remove any debris
from the impellor with a soft brush.
8.
Remove the flue baffles.
9.
Remove all loose deposits from the heat exchanger,
particularly between the fins, using a suitable brush.
10.
Re-assemble in reverse order. Lubricate fan 'O' ring with
silicon grease. Ensure the fan leads and 2 sensing tubes
are reconnected.
59 CLEANING THE BURNER/PILOT ASSEMBLY
60 CLEANING THE FAN/FLUE WAYS
mex
7221
FF440 & FF450 Only
1.
Remove the 2 screws and lift off the lower
front panel. Refer to
Frame 57.
2.
Remove the grille
assembly. Undo the
gas cock union.
3.
Disconnect the
ignition lead from the
PCB.
4
. Remove the 4 wing
nuts and withdraw the
burner and controls
assembly, complete,
from the boiler.
5.
Place on a convenient
working surface.
1.
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.
2.
Remove the main burner injector. Check, clean or
replace, as required.
3.
Refit the injector, using an approved jointing compound.
4.
Inspect the pilot burner and ignition/detection electrode;
ensure they are clear and in good condition.
Check that:
a.
The pilot burner is clean and unobstructed.
b.
The ignition/detection electrode is clean and
undamaged.
c.
The ignition/detection lead is in good condition and
securely connected.
d.
The spark gap is correct. Refer to Frame 69.
e.
The position of the ignition/detection electrode relative
to the pilot burner is correct. Refer to Frame 69.
5.
Clean or renew components as necessary.
SER
VICING
200939-1.p65
3/1/2004, 4:34 PM
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