Mira GO 8.5 Installation, Operation, Maintenance Manual page 21

4. Heater Tank - Removal and Installation
Warning! Make sure that the electrical supply is turned off at the mains and the
appropriate circuit fuse is removed. Turn off inlet water supply.
4.1. Remove the three cover retaining screws, the cover and the service tunnel.
4.2. Remove the hose from the outlet connector and loosen the connection to the
inlet connector assembly.
4.3. To improve access to the terminals on top of the tank, the terminal block may
be loosened by removing the fixing screw.
4.4. Remove the screws that hold the inlet clamp bracket in position and remove the
clamp bracket.
4.5. Remove the screws that hold the flow valve and switch assembly and the heater
tank in position.
4.6. Carefully pull the flow valve, switch assembly and heater tank away from the
case. Make sure that you ease the inlet connector assembly off the inlet supply
pipe.
4.7. Make a note of the positions of the wiring on top of the heater tank.
4.8. Remove the blue wire and associated solenoid wires from the top of the heater
tank.
4.9. Remove the brown and red wires from one side of the thermal switch and the
second brown wire from the other side of the thermal switch.
Caution! Do not press printed disc on the thermal switch as this will make the
component unserviceable.
4.10. Remove the fixing screw then remove the thermal switch and green earthing
bonding wire.
4.11. Remove the red and black tank wires from the microswitches.
4.12. Separate the heater tank from the flow valve and switch assemblies.
4.13. Remove the outlet connector from the heater tank.
4.14. Refit the components in reverse order. Make sure that the electrical wires are
installed in the correct positions. In Particular the green earth bonding wire must
be reconnected above the thermal switch flange.
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