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7. SERVICING & PA RT S RE PL A C E ME NT
• Always turn off the gas supply and make sure that the
appliance is cool b e f o re c o mme ncing any servicing.
• Alway s t est fo r ga s so un dness and spil l a ge after ser vicing the
appliance.
• It is recommended that, at least once a year, the appliance is
disconnected and the catchment space behind the closure plate
checked and cleared of any debris. The closure plate must be
resealed to the wall after c h ecking.
7.1. TO RE PL ACE RADIANT(S)
7.1.1. Remove the dress guard by pressing down the two
hooks at the top. T i lt the guard forward and lift out.
7.1.2. Remove the old radiant(s) Fit the new radiant(s)
ensuring that they rest against the rear support bar
and that their bottom front edges are behind the
retainin g tags near the front of the radi an t b ox.
7.1.3. Replace the dress gu ard.
Locate the bottom of the dress guard in the two
holes in the bottom panel apron. Engage the two
spring projections at the top of the guard in the slots
under the f r on t decorative canopy.
7.2 TO REMOVE THE OUTER CASE
7.2.1
Remove the contro l knob by pulling clea r of the g as
tap spindl e .
7.2.2 Remove the outer case retaining screws at the
bottom sides of th e f ire (Figure 3).
7.2.3 Lift the outer case up and forward to clear the top
retaining brackets and the gas tap spindle (Figure 3).
Put the case in a safe place.
7.3. TO REPLACE THE PILOT UNIT
7.3.1.
Remove the outer case - see section 7.2.
7.3.2. Disconnect the thermocouple connection at the
bottom of the gas tap.
7.3.3. Disconnect the pilot pipe from the gas tap. It is the
upper con n e ction at the right sid e of th e tap.
7.3.4. Remove the first screw securing the dust cage to the
pilot unit & burner. Car efully remove t he dust cage
and place aside. Remove the second screw securing
the pilot u n it to the burner.
7.3.5. Disconnect the electrode lead from below the pilot
electrode. Carefully remove the dust cage.
7.3.6. Carefully remove the pilot unit together with the
pilot pipe then disconnect the pipe from the pilot
unit.
7.3.7. Replace in the reverse order.
Note: 1 The pilot unit must be replaced as a whole assembly.
Its individual components are not separately
replaceable.
2. Once removed, ensure that the dust cage is cleaned
before refitting. Make sure that it locates squarely
onto the pilot unit without any gaps between the
cage edges and the pilot unit.
.
7.4. TO REMOVE THE BURNER, GAS
TAP & PILOT ASSEMBLY
7.4.1.
Remove the outer case - see section 7.2.
7.4.2. Make sure that the gas tap is in the off position.
Disconnect the control spindle & adapter from the
gas tap by removing the split pin. Lift the adapter
clear of the gas tap spindle.
7.4.3. Disconnect the inlet pipe from the gas tap. It is the
lower con nection at the right side of the tap.
7.4.4. Slacken t he wing nut at the left side of the burner.
Remove the screw from the captive nut at the right
side of the burner. Carefully remove the burner, tap
& pilot unit.
7.4.5. Replace in the reverse order. Leave the burner fixing
screw and wing nut loose while reconnecting the
inlet pipe to aid alignment.
Make sure that the control knob with spindle is correctly
turned to agre e with the gas tap p osition bef ore refitti ng the
split pin.
7.5 TO REPLACE GAS TAP OR
INJECTOR(S)
7.5.1.
Remove the bu r n e r , tap & pilot unit - see section 7.4.
7.5.2. Disconnect the electrode lead from below the pilot
electrode.
7.5.3. Disconnect the thermocouple connection at the
bottom of the gas tap.
7.5.4. Dis c onnect the pilot pipe fr om the gas tap.
7.5.5. Remove the gas tap fixing nut from the burner and
slide ou t th e gas tap .
7.5.6. Unscrew the injector(s).
7.5.7. Replace in the reverse order using jointing
compound complying with BS 5292. Take care when
replaci n g the i nj e ctor s. The i n je ctor s h a ve cer a mi c ti p s a t each
end. It is importa nt n ot to a ll ow joi n tin g comp ou n d to get on
either end of the injectors.
Make sure that the control knob with spindle is correctly
turned to agre e with the gas tap p osition bef ore refitti ng the
split pin.
7.6 TO REPLACE THE PIEZO
GENERATOR
7.6.1.
Remove burn e r, tap & pilot unit - see sec ti on 7.4.
7.6.2. Disconnect the electrode lead from below the piezo
unit.
7.6.3. Straighten the tabs securing the piezo unit to the tap
niting plate and pull the pi ezo u n i t c l ear.
7.6.4. Replace in the reverse order. Twist the tabs on the
piezo unit to secure to the niting plate. Ma ke sur e that
the control knob with spindle is cor r ectl y tur n ed to a gr ee wi th
the gas tap position before refitting the split pin.