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16.11 To Remove the Shut-Off Tap
See figure 63.
Remove the burner unit - See section
1.
16.6.
Unscrew and remove the two ceramic
2.
support brackets from the top of the
burner unit. This will avoid damage to the
brackets and the worksurface (see figure
63) Turn the burner unit upside down.
Detach the thermocouple and interrupter
block from the tap - See section 16.8
paragraphs 2 - 4.
Detach the pilot pipe from the tap.
3.
Detach the inlet pipe.
4.
Remove the hexagonal nut securing the tap to the mounting bracket.
5.
Detach the elbow by unfastening the hexagonal nut connecting it to the flow rate
6.
controller. Lift the tap (complete with elbow) clear.
Loosen the hexagonal locknut securing the elbow to the tap. Remove the elbow by
7.
rotating it.
If fitting a new tap, remove the hexagonal nut at the mounting bracket end of the old
8.
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.
INSTALLER'S GUIDE
Page 44
Figure 63. Shut-off tap (viewed from
rear with burner turned over)
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