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Changing Components – Page 8
CAUTION: ISOLATE THE ELECTRICAL SUPPLY
INCLUDING THE PERMANENT LIVE, TURN OFF THE GAS
SUPPLY, ENSURE THAT THE FIRE IS COLD, AFTER
REPLACING ANY COMPONENTS ALWAYS TEST FOR GAS
SOUNDNESS.
Please read the Important Information Section on page 3.
Replace all components in the reverse order of
dismantling. If necessary re-light the boiler pilot.
Remove the outercase and turn off the gas service tap as
described in 1 - 4 of ‘Servicing the Fire’.
The following components can be removed as described below:
1. GAS CONTROL TAP/FFD
(Fig.12)
(a)
To grease the tap proceed as follows: Pull off the plastic
cap and disconnect the spark electrode lead from the
piezo unit. Undo the two screws and washers securing the
niting plate to the tap body. Remove the piezo unit
complete with the gas tap spindle and spring. Remove the
plug and apply a suitable grease sparingly (Excessive
grease may block the gasways).
On re-assembling care must be taken to ensure that both
the plug and spring are in place.
(b)
To exchange the component: (Fig. 10). Pull off the plastic
cap and disconnect the spark electrode lead from the
piezo unit. Disconnect the four pipes at the gas tap.
Disconnect the thermocouple from the gas tap. Remove
the 3 screws securing the gas tap bracket to the inner
case and remove the complete assembly. Remove the
locknut holding the gas tap to the bracket or innercase and
remove the gas tap.
On re-assembly ensure that the spark electrode lead is
correctly fitted and that the plastic cap is pushed on to the
piezo unit.
2. GLASS FRONT PANEL
(Fig.11)
(a)
Ensure that the glass front panel is cold.
(b)
Disengage the front panel retaining clamps and remove
the glass front panel.
NOTE: THIS IS A HEAT RESISTANT GLASS AND MUST
NOT BE REPLACED BY ORDINARY GLASS
On re-assembly ensure that:
The glass front panel sealing rope is replaced if it is in anyway
damaged.
3. SEALING ROPE
(Glass Front Panel) (Fig.11)
Remove the glass front panel as described above. Carefully pull
off the sealing rope from the retaining barbs on the combustion
chamber. On re-assembly ensure that the sealing rope is
securely fitted onto the retaining barbs.
4. COAL BED
(Fig.11)
Remove the glass front panel as described above. Remove the
coal bed by carefully lifting it away from the locating pins. On re-
assembly ensure that the coal bed is correctly located over the
locating pins.
CAUTION: The coal bed is extremely fragile and must be
handled accordingly. Gloves should be worn and any
inhalation of the dust should be avoided. Keep the coals
away from children at all times.
5. BURNER
(Figs.10& 11)
(a)
Remove the glass front and coal bed as described above.
(b)
Disconnect the compression nuts from the injectors and
remove the injectors.
(c)
Remove the two screws securing the burner and draw the
burner out over the support bar.
6. PILOT/A.S.D. ASSEMBLY
(Fig. 12a)
WARNING:
The A.S.D. pilot assembly must not be
adjusted in any way. The A.S.D. must not be altered so that it
will not operate or be bypassed in any way. The thermocouple
cannot be changed as an individual -component. The complete
assembly must be replaced in the event of one or other
component failure(s). Only use a Genuine Baxi Spare Part.
Undo the screw retaining the pilot shield and remove the shield.
Pull back the sleeve and disconnect the lead from the electrode.
Undo the nut on the pilot feed pipe.
Remove the screw holding the assembly to the bracket.
Undo the thermocouple from the gas tap. Remove the assembly
from the fire.
On re-assembly, shape the thermocouple in a similar manner to
the original.
7. ELECTRO-MAGNET UNIT
(Figs 10 & 12)
(a)
Remove the gas tap as explained in 1(b).
(b)
Remove the electro-magnet retaining nut and withdraw the
electro-magnet unit.
8. PIEZO UNIT
(Fig.12)
Pull off the plastic cap and disconnect the spark electrode lead
from the piezo unit. Undo the tabs on the rear of the piezo unit
and remove. Replace the piezo unit twisting the tabs to retain it
firmly in position. Re-connect the spark electrode leads and re-
fit the plastic cap.
9. LIGHT SWITCH
Caution: Ensure electrical supply is isolated. Pull off the
two flag terminals from the switch. Press together the
retaining arms on the rear of the switch and remove the
switch. Replace the switch and terminals, see illustrated
wiring diagram.
10. RESISTOR
(a)
Check that the electrical supply is isolated.
(b)
Remove the two screws securing the light bulb cover and
lift upwards.
(c)
Remove the clip securing the resistor to the cover and
disconnect the 2 wires.
(d)
Replace the resistor and reassemble in reverse order.
