13
8.5. To Remove The B urne r, Pipes And
Pilot
8.5.1.
Remove the outer case a s secti on 8.2.
8.5.2. Remove the coal as section 8.3.
8.5.3. Detach the gas tap and disconnec t th e
thermocoupl e f rom the tap as section 8. 4.
8.5.4. Remove the screw and sha k eproof wash er fixing
the burner at the righ t side
8.5.5. Remove the wing nut fixing the burner at the
left side.
8.5.6. Slide the bur ner unit complete with pilot pipe
and main burner pipes and pilot un it to the left and
forward clear of the radiant box.
8.5.7. Remove the pipes, injectors or pilot unit if
required.
8.5.8. Replace in the reverse order .
Note: 1. T h e pilot unit must be replaced as a whole assemb ly .
Its individual components are not separately
replaceable.
2. If removed, ensure that the dust cage is cleaned before
refitting and locates squarely onto the pilot unit without
any gaps between the cage edges and the pilot unit.
3. Make sure that the pilot shield is refitted if removed.
4. When refitting the burner make sure that the
shakeproof washer is fitted under the head of the screw
which engages with t he right hand burner bracket .
This washer prevents the end of the screw from catching
the upper inje ct or hexagon.
8.6. To Remove An Injector
8.6.1. Remove the outer case a s secti on 8.2.
8.6.2. Release the pipe compression fitting to th e
upper or lower injector as required. Lock the injector
with a second spa nner to ensure that it does not move.
8.6.3. Loosen the pipe compr ession fitting at the tap
end and move th e pipe clear.
8.6.4. Remove the injector from the burn er.
8.6.5. Replace in the reverse order .
8.7. To Disconnect The Gas Supply Pipe
Access for gas supply disconnection, may be ea sier if the
floor plate is removed.
8.7.1. Remove the outer case a s secti on 8.2.
8.7.2. Detach the pla te by unscrewing two sc rews
securing it to the side feet and pulling clear (see fig.18).
8.7.3. Replace in the reverse order. When ref itting the
floor plate, make sure that the rear tabs locate through
the upper pair of slots in the back pa nel (see fig.18).
8.8. To Remove The Piezo Generator
8.8.1. Remove the gas tap as section 8. 4..
8.8.2. Make sure that th e ta p i s i n the off position .
8.8.3. Remove the circl i p h olding the pi ezo unit to the
tap. Remove the piezo unit.
8.8.4. Replace in the reverse order .
8.9. To Grease The Control Tap
8.9.1. Detach the tap and remove the piezo gen er a tor
as section 8.8 making sure that the tap is in the off
position.
8.9.2. Remove the two scr ews from the head of the tap.
Remove the nitin g head and spi ndle complete with
collar and spring.
8.9.3. Note the position of the slot in the plu g - ma rk
its position on the ta p body.
8.9.4. Remove the plug rotating slightly while pulling.
8.9.5. Clean and grease the plug lightly with a suitable
grease. Do not apply excessive grease. Particularly, make
sure that the gas ports in th e tap are no t restrict ed by
grease.
8.9.6. Push th e plug into the tap bod y a nd position the
slot in line with the mark previously made on the tap
body.
8.9.7. Reassemble the niting head and spindle
complete with coll a r and sprin g ma ki ng sure that the
components ar e c orrectly engaged . Check the opera tion
of the tap.
8.9.8. Refit the piezo gen er ator.
Fig. 18 Floor plate fixing