Calibration Intervals; Changing The Battery - Dräger Pac 3500 CO Gebrauchsanweisung

5.5 Turning the device off
– Simultaneously hold both keys for approximately 2 seconds until "3" ap-
pears in the display. Continue to hold both keys until the countdown is fin-
ished. A horn signal indicates that the device is turned off.
5.6 Event logger
– Dräger Pac 3500/5500 is equipped with an event logger. The event logger
stores 60 events. If event No. 61 occurs the logger overwrites the oldest
stored event.
– For download of the stored data connect Dräger Pac 3500/5500 to a PC us-
ing the connecting cradle or the E-Cal System. The stored data can be
downloaded with installed PC software CC Vision Basic.
5.7 Calibration and configuration
– For full zero and span calibration or individual configuration connect the de-
vice to a PC using the connecting cradle or the E-Cal System. Calibration
and configuration can be done with installed PC software CC Vision Basic.
A calibration "due date" can be set using the operation timer (in days). Strict-
ly follow the instructions for use of the modules and software in use.

5.8 Calibration intervals

– Dräger recommends 2 year inspections. Yearly or 6 monthly calibrations if
demanded, acc. EN 60079-29-2, OSHA or other country or company specif-
ic requirements.
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
PC software CC Vision Basic.
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 immediately, because there may
be a danger to life.
A main alarm is self-latching and cannot be acknowledged or cancelled.
DANGER
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.
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.

7 Changing the battery

Danger of explosion! Do not change the battery in explosion-hazard areas.
Substitution of components may impair intrinsic safety!
To prevent ignition of flammable or combustible atmospheres, and to avoid
compromising intrinsic safety of the equipment, read, understand, and
adhere to the maintenance procedures below.
Take care when changing the battery not to damage or short out compo-
nents, and do not use sharp tools to remove the battery.
– The device contains a replaceable lithium battery.
– The battery is part of the Ex approval.
« flashes.
WARNING
5