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6.0
6.0 Maintenance and service
Decalcification and change of filter (see sections 6.4, 6.5) should be carried out immediately by the user when required.
Saftey-technical inspection
6.1
Functional test
Test
Switch unit several times on and off.
Correct function of mains pilot lamp and solenoid valve (clacking).
Automatic activation of the thermal process for reducing bacterial count.
Shut-off main water tap and observe temperature indication.
After a few seconds error signal will appear "F1" (= no water).
Testing the displays.
All optical and audible indicators issue their signal during the first second after switching on (in particular
segmental test "8 8 ").
Set all temperature setting switches on 40°C and test consecutively by touching the corresponding keys whether in
all ranges 40°C is reached in ACTUAL temperature indication.
• Spray off and check water temperature by hand.
• Carry out the same test with temperatures 37°C and 28°C.
The particular combination of temperatures 40°C, 37°C and 28°C, as well as the test in all ranges ensures a
comprehensive test of all contacts of the pre-setting switches, in ON- as well as in OFF-position, and also
testing of all components involved in temperature control of the DESIRED temperature control system.
Therefore, carrying out a test in one range only, or at only one temperature is not permissible.
Set temperature at 49°C.
The electronic excess-temperature protection must respond (in the temperature display error code "F7"
appears).
Measure temperature of water splashed off at standard settings: 30°, 37° and 44°C.
The value may not deviate more than ± 0,5° ± 1/2 digit, i.e. 1°C in total. Typically, however, values are better
than ± 0,5°C.
This measurement is critical !
Measuring probes or thermometers which are too large may cause faulty measurements because of substantial heat
removal, inertia, and because their temperature sensitivity is not localised on a point but spread over a larger surface.
Instruments whith an immersion probe, a precision of 0.3°C and a resolution of 0.1°C or better are suitable.
After setting the temperature 1 minute at least should be waited in order that the double-barrelled hose to the handle
attains correct temperature.
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