20
STEL / TWA exposure alarm
— STEL and TWA alarms cannot be acknowledged or cancelled.
Switch off the instrument. The values for the exposure evaluation are deleted after
the instrument is switched on again.
Battery pre-alarm
Acknowledging the pre-alarm:
Press the key. Only the audible alarm and the vibration alarm are switched off.
— The battery still lasts approx. 20 minutes after the first battery pre-alarm.
Battery main alarm
The battery main alarm cannot be acknowledged or cancelled:
— The instrument is automatically switched off again after 10 seconds.
— Before the instrument is switched off, the visual, audible and vibration alarms are
activated for a short time.
Instrument alarm
— The instrument or one or several sensor channels are not ready for operation.
— For remedies, refer to page 28 to page 35.
If necessary, commission the Dräger Safety Service Center to eliminate the error.
The alarm is indicated by an intermittent alarm message:
Display »A2« and »« (TWA) or » « (STEL) and measured
value alternating:
WARNING
Risk to health! Leave the area immediately.
After this alarm, the deployment of personnel is subject to the relevant national
regulations.
NOTICE
The STEL alarm can be triggered with a maximum delay of one minute.
The alarm is indicated by an intermittent alarm message:
Flashing special symbol »« on the right side of the display:
The alarm is indicated by an intermittent alarm message:
Flashing special symbol »« on the right side of the display:
The alarm is indicated by an intermittent alarm message:
Special symbol » « on the right side of the display:
OK