6
6.4 Handling of exhausted batteries
Usable life alarm (only valid for Pac 3500)
–
Before the end of the device’s usable life, a warning period begins.
During this period the remaining life time flashes just after turning
the device on, e. g. "30" / "d".
–
To acknowledge this message
[OK]
must be pressed. After that,
the device can be used normally.
– After the usable life has expired the text "0" / "d" will alternate in the display
and cannot be acknowledged. Dräger Pac 3500 will not longer measure and
may be returned to Dräger for recycling or disposal.
6.5 Device alarm
– The alarm and LED will be activated three times, periodically.
– The
[X]
icon is flashing, a 3 digit error code will be shown in the display.
– If an error appears in the display see section 8 and if necessary please con-
tact Dräger.
7
Changing the sensor
– Turn the instrument off.
– Unscrew the 4 screws from the back case.
– Open the front case and remove the battery.
– Remove the sensor.
– Insert the new sensor.
– Insert the battery according to specified polarity (+/–).
– Place front case back and fasten it by tightening the 4 screws of the back
case.
WARNING
Danger of explosion!
Do not throw used batteries into fire or try to open them by force.
Dispose of the batteries in accordance with local regulations.
Spent batteries may be returned to Dräger for disposal.
WARNING
Danger of explosion!
Do not change the sensor in explosion-hazard areas.
Notice
Replace sensor when instrument can no longer be calibrated!
Notice
Use only the DrägerSensor XXS of the same gas type!
– After inserting the battery a sensor warm up time of around 15 minutes is
needed.
– Countdown in seconds is shown until warmup time has passed.
– After changing the sensor and after the warm up time is finished the
instrument must be calibrated.
8
Trouble shooting warnings/errors
Warnings
Errors
Code
Cause
Remedies
225
Calibration interval has
expired.
Perform span calibration.
235
Bump test interval has
expired.
Perform bump test.
Code
Cause
Remedies
100
Flash / EEprom write fail
Contact Service
102
AD system defect
Contact Service
104
Flash check sum wrong
Contact Service
106
Most recent settings resto-
red
Recalibrate device
107
Self test failed
Contact Service
109
Configuration incomplete
Configure again
210
Fresh air calibration failed
Repeat operation
220
Span calibration failed/Ca-
libration grace period ex-
pired
Perform span calibration.
240
Bump test failed
Repeat bump test or calibrate
device
