36
220683B
1 0 R e p l a c e m e n t o f P a r t s
10.7 Multifunctional Control - diagram 10.3
Disconnect the pilot supply by unscrewing the tubing nut
at the multifunctional control, take care as there is a
restrictor on the pilot pipe.
Disconnect the electrical plug.
Support the multifunctional control, remove the four
extended screws from the flanged connections at the left
and right hand side.
Remove and discard the original “O” rings from the
flanged connections and fit the new “O” ring 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.
10.8 Solenoid - diagram 10.3
Remove the electrical plug from the multifunctional
control. Remove the securing screw and then the
solenoid Assembly.
10.9 Main Burner
Remove the main burner as Section 8.3.
10.10 Main Injector
Remove the main burner as Section 8.3.
Remove the main injector as Section 8.4.
10.11 Insulation - 10.4
Combustion Chamber Front
Remove the retaining screw then the insulation.
Sides
Slide the insulation out.
Rear
With the side insulation removed the rear insulation can
be removed and replaced.
Diagram 10.3
SOLENOIDS
SECURING
SCREW
PILOT PIPE
TUBING NUT
RESTRICTOR
ELECTRICAL
PLUG
EXTENDED
SCREW (8)
4123
10.12 Viewing Window - diagram 10.5
Remove the push on fixes and then the window.
When replacing take care not to damage the gasket.
10.13 Air Pressure Switch - diagram 10.6
Release the control box as Section 5.6.
Remove the air pressure tubes and electrical connections
from the PCB, release the screws and remove the switch.
When fitting the replacement make sure that the plastic
tubes and electrical connections are made as shown in
diagram 9.5 and 10.6.
10.14 Fan - diagram 5.4
Remove the electrical connections and disconnect the air
pressure tubes.
Remove the fan assembly securing screws at the front
and slacken those at the rear and withdraw the assembly.
Make sure that the earth connection is remade onto the
new fan assembly.
The polarity of the other connections is not important.
