AIRFORCE F153 TSE V6 Prescriptions De Montage Et Mode D'emploi page 24

GB OPERATION
TIMER
The countdown can be activated independent of the other hood functions.
On contact with any key, it activates, showing 00 on the display.
To adjust the minutes, use the + and – keys; each contact gives an increase of 1 minute, keeping
pressed gives an increase of 5 minutes.
The TIMER key starts the countdown, if already on you can pause it.
The R key resets the timer and the buzzer.
When the countdown returns to 00 the system gives an acoustic warning and the display flashes
until you press the reset key.
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