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controller. Lift the tap (complete with elbow)
clear.
7. Loosen the hexagonal locknut securing the
elbow to the tap. Remove the elbow by
rotating it.
8. If fitting a new tap, remove the hexagonal
nut at the mounting bracket end of the old tap
and fit to the replacement tap. Refit in the
reverse order. When refitting, make sure that
the tap spindle is in the correct relationship
relative to the control pivot bracket. Rotate
the pivot bracket fully clockwise. The tap
spindle should "bottom out" (i.e. the tap
should be fully open) after the pivot
bracket has actuated the ignition
microswitch but before it has
pushed the microswitch leaf against
the microswitch body.
When refitting the thermocouple
and interrupter block, make sure
that the microswitch wires are
properly secured to give a good
electrical contact.
16.12 To remove the gas flow rate
controller .
(See figure 44).
1. Remove the burner unit (See
section 16.7).
2. If lying the burner on its back,
ensure that the work surface is
suitably protected This will avoid damage to the work surface.
3. Detach the microswitch cover (See section 16.2 paragraph 2).
4. Detach the shut-off tap as detailed in section 16.11 paragraphs 2-6.
5. Detach the burner pipe from the controller. Support the controller while detaching to
prevent excessive strain.
6. Remove the nut and washer securing the control pivot bracket to the controller at the
front. Support the pivot bracket while removing the nut to prevent possible damage to
the microswitch.
7. Remove the hexagonal bolt securing the control pivot bracket to the controller at the
rear.
INSTALLER GUIDE
Figure 44. Flow rate controller
Page 33
Figure 43. Shut-off tap (Viewed from
rear with burner turned over)
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