13
Switching off the instrument
Press and hold the key and key at the same time until the countdown
»3.2.1« shown in the display has elapsed.
— Before the instrument is switched off, the visual, audible and vibration alarms are
activated for a short time.
Before entering the workplace
Switch on the instrument. The current measured values are shown in the display.
Observe any warning » « or fault messages » «.
— If one of these special symbols is displayed, appropriate measures, refer to page 28
to page 32, must be taken.
Check that the gas inlet opening on the instrument is not covered and/or dirty.
WARNING
Before any measurements relevant to safety are made, check the adjustment with a
bump test, adjust if necessary and check all alarm elements. If national regulations
apply, a bump test must be performed according to the national regulations. Faulty
adjustment may result in incorrect measuring results, with possible serious
consequences.
WARNING
In an oxygen enriched atmosphere (>21 vol. % O
2
), the explosion protection cannot
be guaranteed; remove instrument from the Ex area.
NOTICE
If the gas detector is used for offshore applications, a distance of 5 m to a compass
must be complied with.
The instrument can be operated normally. If the warning message does not go
out automatically during operation, the instrument must be maintained after the
end of use.
The instrument is not ready to measure and requires maintenance.
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