Kemppi FreshAir Flow Control unit Bedienungsanleitung PDF herunterladen (Seite 9)

9© Kemppi Oy / 1309

The unit ensures a constant supply of air. The microprocessor inside the unit

automatically regulates the motor speed to compensate the lter clogging

and the battery state.

If the microprocessor cannot maintain the adjusted airow, an acoustic

alarm signal can be heard and the LED diodes display RED in colour. If

possible, the microprocessor automatically reduces the airow to the next

lower level.

When the airow falls below the minimum level, the alarm intensies. Then

the user must stop working at once and change the lter or recharge/

change the battery.

To check the alarm function, perform the air ow test as explained in section

4.2: "Air ow test".

4.4 Checking the battery state

Press and hold the left button (–) for more than 1 second. The more red

coloured LED diodes come on, the higher the remaining battery capacity is.

> 1 s

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Kemppi FreshAir Flow Control unit Bedienungsanleitung Seite 9