Maintenance And Service; Functional Test - Atmos Varioair 3 Mode D'emploi

6.0 Maintenance and service

Change of filter (see section 6.4) 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.
 Automatic activation of displays test.

 Testing the displays.
 All optical and audible indicators issue their signal during the first second after switching on (in particular seg-
mental 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.
• Check air temperature.
• 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 and close the air exhaust opening on the handle.

The electronic excess-temperature protection must respond after approx. 100-120 sec. (in the temperature

display error code "F7" appears).

 Measure temperature of air at standard settings: 30° 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. Use measuring instruments with an immersion probe, having a minimum precision of 0.3°C and a
resolution of 0.1°C.
After setting the temperature, wait at least 1 minute before measuring to allow temperature stabilization of the
double-barrelled hose and handle.
After setting the temperature 1 minute at least should be waited in order that the probe attains correct
temperature.
UK
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