Potterton Gold H Range Installation & Service Instructions Manual page 46

Support Bracket
Flow Switch
Clip
Plastic
Button
Cover
Fig. 48
Hinge down
PCB Housing
Fig. 49
46
© Baxi Heating UK Ltd 2012
Flow Pipe
Fig. 47
PCB Housing Securing
Screw
15.0 Changing Components
15.3 Flowswitch
(Fig. 47)
1. Drain the boiler (see Section 15.1 paragraph 2 & 3).
2. Remove the two screws on the support bracket.
3. Remove the clip securing the flow pipe to the
flowswitch.
4. Disconnect the inline electrical connection.
5. Pull pipe away from flowswitch.
6. Remove the two screws securing the flowswitch to
the boiler.
7. Remove the flowswitch.
8. Fit the new flowswitch and reassemble in reverse
order.
9. Recommission the boiler and check the inhibitor
concentration (see Section 6.2 and 12.1).
15.4 PCB
(Figs. 48 & 49)
WARNING: The PCB Control and Fan
Assembly are 325 Vdc. Isolate at supply
before access.
1. Remove the plastic button cover. Refit them onto the
new PCB (Fig. 48).
1. Remove the top right hand securing screw and hinge
down the PCB housing and disconnect the electrical
connections noting their positions
2. Lift the Control PCB housing out of hinge housing of
metal bracket.
3. Fit the new PCB Housing Assembly and reassemble
in reverse order.