Changing The Battery - Dräger Pac 3500 Notice D'utilisation

5.9 Adjustable operation timer (in days)
– The device is equipped with an adjustable operation timer. The operation
timer can be used to set an individual operation period e. g. to adjust a "cal-
ibration due date", an "inspection due date", an "out of order date" etc.
– To adjust the operation timer connect the device to a PC using the connect-
ing cradle or the E-Cal System. The adjustment can be done with installed
software Pac Vision or CC Vision.
5.10 Information Display mode
– During measuring mode, press [OK] once, will display any stored Error
codes, twice will display any stored Notice codes, press [OK] again to return
to the main screen.
6 Alarms
If the main alarm activates, leave the area immediatly, because there may
be a danger to life.
A main alarm is self-latching and cannot be acknowledged or cancelled.
6.1 Concentration Pre/Main Alarms
– Optical and acoustical alarms are activated whenever alarm threshold A1 or
A2 is exceeded. The device is equipped with a vibrating alarm. It vibrates in
parallel to these alarms.
– During an A1, the LED will blink and the alarm will sound.
– During an A2, the LED and alarm tone will repeat in a double repeating pat-
tern.
– The display will alternate between the measurement value and "A1" or "A2".
– The alarms may, according to the selected configuration, be acknowledged
or turned off (see section 4). "Acknowledgeable": alarms and LED can be
acknowledged by pressing [OK].
– "Latching": The alarm will only deactivate when the concentration falls under
the alarm threshold and then [OK] is pressed.
– If the alarm is not latching, the alarm will deactivate as soon as the concen-
tration falls under the alarm threshold.
DANGER
6.2 Battery pre/main alarms
– When the battery pre-alarm is activated, the audible alarm sounds and the
LED blinks, and the "low battery" icon »
– To acknowledge the pre-alarm, push [OK].
– After the first battery pre-alarm, the battery will last from 1 hour to 1 week
depending on temperature:
> 10 °C = 1 week of run time
0 °C to 10 °C = 1 day of runtime
< 0 °C = 2 hours of runtime
– When the battery main alarm is activated, the audible alarm sounds in a re-
peating pattern of 2 repeating tones and the LED blinks in the same pattern.
– The battery main alarm is not acknowledgeable; the device will automatical-
ly turn off after approx. 1 minute.
– In case of a very low battery, the internal voltage monitor could activate the
LED's.

6.3 Changing the battery

Danger of explosion!
Do not change the battery in explosion-hazard areas.
– The device contains a replaceable lithium battery.
– The battery is part of the Ex approval.
– Only the following battery types shall be used:
Duracell 123 Photo, Lithium, 3 V
Duracell 123 Ultras, Lithium, 3 V
Panasonic CR 123A, Lithium, 3 V
Energizer EL 123A, Lithium, 3 V
Powerone CR 123A, Lithium, 3 V
– Turn the device off.
– Unscrew the 4 screws from the back case.
– Open the front case and remove the depleted battery.
– Insert the new battery according to specified polarity (+/–).
– Place front case back and fasten it by tightening the 4 screws of the back
case.
– After changing the battery a sensor warm up time of approx. 15 minutes is
needed. The gas value flashes until the warm up time has passed.
« flashes.
WARNING
5