Maintenance - Mira Zest 7.5 Installation, Operation And Maintenance Manual

General
Read the section "Important Safety Information" first.
Providing the shower has been correctly installed and is operated in accordance with the
instructions contained in this guide, difficulties should not arise. If any maintenance is
required then it must be carried out by a competent tradesperson the maintenance
instructions are provided. Before replacing any parts ensure that the underlying cause of
the malfunction has been resolved.
WARNING! There are no user serviceable components beneath the cover of the
appliance. Only a competent tradesperson should remove the cover.
Flow Valve and Switching Assembly - Removal and Installation
WARNING! Isolate the electrical and water supplies before removing the cover. Mains
electricity connections are exposed when the cover is removed.
1.
Remove the three cover retaining screws, the cover and the service tunnel.
2. Remove the hose from the outlet connector and loosen the connection to the inlet
connector.
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.
4. Remove the splash guard which is located between the heater tank and the flow
valve and switch assembly.
5. Remove the screws that hold the inlet clamp bracket in position and remove the
clamp bracket.
6. Remove the screws that hold the flow valve assembly, switching assembly and
heater tank in position.
7. Carefully pull the flow valve, switch assembly and heater tank away from the case.
Make sure that you ease the inlet connector off the inlet supply pipe.
8. Remove the heater tank and the inlet connector assembly from the flow valve and
switch assembly.
9. Remove the microswitches from the switching assembly.
10. Remove the flow valve and switching assembly. Remove the screw that holds the
flow valve and switching assemblies and the two assemblies can now be separated.
11. Refit the components in reverse order. Make sure that the electrical wires are installed
in the correct positions.

Maintenance

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