22
Mexico Super RS 3/100 & 3/125 - Installation
SERVICING
30
BURNER AND CONTROLS ASSEMBLY REMOVAL
SERVICING
33
RE-ASSEMBLY
32
CLEANING THE FLUEWAYS
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 41.
e. The thermocouple tip is not burned or cracked.
f. The position of the thermocouple relative to the pilot
burner is correct. Refer to Frame 41.
g. The thermocouple terminal at the gas valve is clean.
5. Clean or renew components as necessary.
31
CLEANING THE BURNER ASSEMBLY
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, thermocouple and ignition
electrode; ensure they are clear and in good condition.
1. Remove the 2 wing nuts and lift off the cleanout
cover.
2. 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.
3. Check that the flue outlet duct is unobstructed.
Re-assemble the boiler in the following order :
1. Refit the flue cleanout cover, renewing any damaged or
deteriorating sealing gasket.
2. Refit the casing top panel.
3. Reconnect the electrical wiring and refit the controls
panel, ensuring that the thermostat phial and phial
retaining clip are correctly located in the thermostat pocket
and secured by the split pin. Refer to Frame 29.
4. Check the sightglass in the front plate - clean or renew as
necessary.
5. Renew any damaged or deteriorating front plate gasket.
6. Refit the burner and controls assembly.
7. Reconnect the gas service cock.
8. Refit the grille assembly.
1. Lift off front panel and remove the grille
assembly. Refer to
Frame 29.
Undo the gas cock
union.
2. Remove the 4 wing nuts
and withdraw the burner
and controls assembly,
complete, from the
boiler.
3. Place on a convenient
working surface.