q
3. Calibrating and measuring
Manual Instruction
3.7 Switch off
Before the device is switched off, it will have to be rinsed with an adequate amount of
fresh air. Subsequently only, the key control may be pressed for about 3 seconds until
the device switches off (fig 15). The display field will show the time that remains to run
(count down 3-2-1).
shut down in:
Fig. 14
3
sec.
33