Identifying Alarms - Dräger X-am 2500 Instructions For Use Manual

Operation
After the measuring range of the TOX measuring channels has been
exceeded temporarily (up to one hour), checking the measuring
channels is not necessary.
4.6

Identifying alarms

An alarm is displayed visually, audibly and through vibration in a specific
pattern.
4.6.1 Concentration pre-alarm A1
Intermittent alarm:
Alternating A1 display and measuring value. Not for O
The pre-alarm A1 is not latching and stops when the concentration
has dropped below the alarm threshold A1.
In case of A1, a single tone is audible and the alarm LED flashes.
In case of A2, a double tone is audible and the alarm LED flashes twice.
Acknowledge pre-warning: Press the OK-key. Only the audible
alarm and the vibration alarm are switched off.
4.6.2 Concentration main alarm A2
WARNING
!
Risk of fatal injury! Leave the area immediately. A main alarm
is self-retaining and cannot be acknowledged or cancelled.
Intermittent alarm:
A2 display and alternating measured value.
For O : A1 = lack of oxygen
2
A2 = excess oxygen
After leaving the area, when the concentration has dropped below
the alarm threshold:
20
Press the OK-key. The alarm messages are switched off.
If the measuring range is exceeded significantly on the CatEx channel
(very high concentration of flammable materials), a blocking alarm is
triggered. This CatEx blocking alarm can be acknowledged manually
by switching the instrument off and back on again in fresh air.
4.6.3 STEL / TWA exposure alarm
CAUTION
!
Leave the area immediately. After this alarm, the deployment
of personnel is subject to the relevant national regulations.
!
2
Intermittent alarm:
Display A2 and
value alternating:
The STEL and TWA alarm cannot be acknowledged or cancelled.
Switch off the instrument. The values for the exposure evaluation
are deleted after the instrument is switched on again.
4.6.4 Battery pre-alarm
Intermittent alarm:
Flashing special symbol
Acknowledge pre-warning: Press the OK-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.
4.6.5 Battery main alarm
Intermittent alarm:
Flashing special symbol
(STEL) or respectively (TWA) and measured
on the right side of the display:
on the right side of the display:
Dräger X-am 2500