Baxi Barcelona Installation And Servicing Instructions page 29

13.0 Changing Components – page 29
Fig. 50
13.3 Interface PCB
1. Pull the control knob off the spindle and remove the
securing nut and washer (Fig. 47).
2. Release the electrical box securing screw and hinge
the electrical box down (Fig. 48).
3. Remove the two rear cover securing screws and
remove the rear cover (Fig. 49).
4. Lift the PCB from the electrical box and remove the
electrical connections (Fig. 49).
5. Fit the new PCB and reassemble in reverse order.
13.4 Flowswitch (Fig. 50)
1. Drain the boiler
(see Section 13.1 paragraph 2 & 3).
2. Disconnect pipework, loosen elbow locking nut and
undo screws on support bracket.
3. Remove the clip securing the flow pipe to the
flowswitch.
4. Remove the two screws securing the flow switch to the
boiler.
5. Disconnect the inline electrical connection.
6. Remove the flowswitch.
7. Fit the new flowswitch and reassemble in reverse order.
8. Recommission the boiler and check the inhibitor
concentration (see Section 6.2 and 10.1).