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The number of hours the appliance has

been in operation is stored in memory.

The operating hours counter tells you

when the grease filters need to be

cleaned.

After 30 hours of operation (or another

time if the operating hours counter has

been altered), the grease filter indicator

lamp will light up. The grease filters

must then be cleaned.

Afterwards, the filter operating hours

counter must be reset.

^ To do this, press and hold the grease

filter control in for approx. 3 seconds

while the fan is switched on.

The indicator lamp for the control will

go out.

To check the percentage of time set

already used:

^ Press the On/Off control to switch the

fan on.

^ Press and hold the grease filter

control.

One or more of the indicator lamps for

the

controls will flash.

The number of flashing lamps shows

the percentage of the operating time

which has already been used up.

1 lamp

= 25 %

2 lamps = 50 %

3 lamps = 75 %

4 lamps = 100 %

The number of operating hours used

remains in the memory, even when the

appliance is switched off or there is a

power cut.