sure that the tap spindle is in the correct relationship relative to the control pivotbracket. 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 ignitionmicroswitch but before it has pushed the microswitch leaf against the microswitchbody.When refitting the thermocouple and interrupter block, make sure that the microswitchwires are properly secured to give a good electrical contact. Do not over tighten thenut.20.12 To remove the gas flow ratecontroller.(See figure 45).1. Remove the burner unit (See section20.6).2. If lying the burner on its back, ensurethat the work surface is suitably protected.This will avoid damage to the work surface.3. Detach the shut-off tap as detailed insection 20.11 paragraphs 2-6.4. Detach the burner pipe from thecontroller. Support the controller whiledetaching to prevent excessive strain.5. Remove the nut and washer securingthe control pivot bracket to the controller atthe front. Support the pivot bracket while removing the nut to prevent possibledamage to the microswitch.6. Remove the hexagonal bolt securing the control pivot bracket to the controller atthe rear.7. Detach the control pivot bracket.8. Remove the hexagonal nut securing the controller to the front mounting bracketand remove the flow rate controller.9. Refit in the reverse order.20.13 To remove the burner.1. Remove the burner unit (See section 20.6).2. Remove the metal gauze from around theinjector. To do this unscrew and remove the screwfrom the front of the burner tray.3. Support the elbow injector and unscrew theinjector nut.4. Remove the two screws from the burnerclamping plate (See figure 46)5. Lift the right hand side of the burner, slide it tothe right and lift clear.Page 45© Baxi Heating U.K. Limited 2010.INSTALLER GUIDEFigure 46.Figure 45.