sewerin EX-TEC Combi, Руководство по эксплуатации

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19
3 Measuring operation
Triggering the alarm thresholds
AL1 alarm (Example: CH
4
)
exceeding this alarm threshold
triggers:
- the optical alarm (item 1)
- the acoustic alarm (item 7)
- the appearance of
AL1 in
the LCD
the interval tone is clearly dis-
tinguishable from the operating
signal
the AL1 alarm can be cleared,
the optical alarm (item 1)
persists
if the concentration falls below
this alarm threshold, the opti-
cal and acoustic alarms (items
1 and 7) switch off
AL2 alarm (Example: CH
4
)
exceeding this alarm threshold
triggers:
- the optical alarm (item 1)
- the acoustic alarm (item 7)
- the appearance of
AL2 in
the LCD
the continuous tone is clearly
distinguishable from the ope-
rating signal
the AL2 alarm cannot be
cleared
if the concentration falls be-
low this alarm threshold, the
alarm that sounds (AL1) can
be cleared
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