29
221954D
Remove and discard the original “O” rings from the flanged
connection and fit the new “O” rings supplied, into recess,
before fitting the replacement multifunctional control.
After assembly test for gas soundness and purge in accordance
with the current issue of BS6891.
12.8 Solenoid - diagram 12.3
Remove the electrical plugs from the multifunctional control.
Remove the securing screw and then the solenoid assembly.
12.9 Main Burner
Remove the main burner as Section 10.2.
12.10 Main Injector
Remove the main burner as Section 10.2.
Remove the main injector as Section 10.3.
12.11 Insulation - diagram 12.4
Combustion Chamber Front
Remove the retaining screw then the insulation.
Sides
Slide the insulation out.
12.12 Viewing Window - diagram 12.5
Remove the old self adhesive aluminium foil gasket and the old
mica window. Replace with a new mica window. Peel off the
backing paper and secure with new self adhesive aluminium foil
gasket, see diagram 12.5. Ensure no air bubbles are trapped
underneath the foil.
Important
Make sure that the mica window fully covers the opening and
that the hole in the aluminium foil gasket is centred over
opening.
Diagram 12.2
Diagram 12.2A
OVERHEAT
CUTOFF
ELECTRICAL
CONNECTION
"WHITE"
CABLE
PHIAL
POCKET
THERMOSTAT
PHIAL
SPLIT
PIN
RETAINING
CLIP
OVERHEAT
CUTOFF
DEVICE
PHIAL
SPLIT
PIN
CONTROL
THERMOSTAT
ELECTRICAL
CONNECTION
COMMON
"YELLOW"
CABLE
ELECTRICAL
CONNECTION
BLUE CABLE "N"
ELECTRICAL
CONNECTION
BLUE CABLE "SL"
ELECTRICAL
PLUGS
PLASTIC
RETAINING
CLIP
MAIN
TERMINAL
STRIP
CHASSIS
EARTH
CONNECTION
EARTH
CONNECTION
SECURING
SCREW (2)
IGNITION
LEAD
4301
5756
ELECTRICAL PLUGS
SUPPORT
POST (4)
4090
12 Replacement of Parts