Mira Sport Installation, Operation, Maintenance Manual page 28

7. Printed Circuit Board - Removal and Installation
WARNING! Isolate the electrical and water supplies before removing the cover. Mains
electricity connections are exposed when the cover is removed.
7.1. Remove the three cover retaining screws, the cover and the service tunnel.
7.2. Remove the hose from the outlet connector and loosen the connection to the inlet
connector assembly.
7.3. Remove the screw that holds the terminal block in position. This will give you
sufficient room to carry out the procedure without disconnecting any mains
electrical wiring.
7.4. Remove the screws (2 off) that hold the inlet clamp bracket in position and
remove the clamp bracket.
7.5. Remove the screws (4 off) that hold the flow valve assembly, PCB assembly and
the heater tank in position.
7.6. Carefully pull the flow valve assembly, PCB assembly and the heater tank away
from the case. Make sure that you ease the inlet connector assembly off the inlet
supply pipe.
7.7. Make a note of the positions of the wiring on the PCB.
7.8. Remove the red and brown wires and the busbar from the top of the PCB.
7.9. Make a note of the positions of the wiring on top of the heater tank.
7.10. Remove the brown, blue and green thin wires from the top of the heater tank.
7.11. Make a note of the positions of the wires on the bottom of the solenoid.
7.12. Remove the black and the red wires from the bottom of the solenoid valve.
7.13. Remove the PCB assembly and associated wiring.
7.14. Refit the components in reverse order. Make sure that the electrical wires are
installed in the correct positions.
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