Operation - Mira Sprint 7.5 Installation, Operation, Maintenance Manual

Section
10
1. Advice to Users
Read the section "Important Safety Information" first.
1.1. Electric showers work by taking in cold water and passing it over the heating
elements contained in the tank body of the shower.
1.2. The showering temperature is adjusted by turning the temperature control knob,
which varies the flow of cold water across the elements. The slower the rate of flow,
the warmer the water and vice versa. The holes in the spray plate of the shower
handset should always be kept clean to maintain a consistent flow and stable
shower temperatures.
1.3. The Mira Sprint is designed to stabilise temperature changes caused by water
pressure fluctuations. These can result from taps being turned on or off or toilets
being flushed. Under such conditions average shower temperatures will be held
within a 6 °C band, provided that the minimum required pressure is maintained.
1.4. Seasonal changes in the temperature of the incoming cold water supply and/or
fluctuations in mains electrical voltage, will require the 'TEMPERATURE' knob to
be adjusted as necessary.
1.5. The Mira Sprint requires a minimum maintained/running pressure of 0.7 bar to
operate. At pressures above 0.7 bar the Mira Sprint will minimise the temperature
fluctuations caused when other draw-off points are used. If the flow rate drops
below an acceptable value, the Mira Sprint will turn the heater elements off,
resulting in a cold shower. The 'LOW FLOW' neon will provide visual confirmation
of this condition.
1.6. If the water temperature reaches an unsafe level, the thermal switch assembly
turns off the heater elements. As the water temperature falls the elements will be
turned on. The switch will cycle on/off/on if the flow rate is not increased and the
temperature of the shower reduced.
1.7. Check the shower temperature before entering the shower. The previous user may
have selected a different temperature setting.
1.8. When the shower is first turned on, or a different temperature is selected, there will
be a slight delay before the water temperature changes.

Operation

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