Changing The Sensor - Dräger Pac 3500 Instructions For Use Manual

6.4 Handling of exhausted batteries
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.
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
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

Danger of explosion!
Do not change the sensor in explosion-hazard areas.
Replace sensor when instrument can no longer be calibrated!
Use only the DrägerSensor XXS of the same gas type!
– 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.
6
WARNING
[OK] must be pressed. After that,
WARNING
Notice
Notice
– 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
Code Cause
225 Calibration interval has
expired.
235 Bump test interval has
expired.
Errors
Code Cause
100 Flash / EEprom write fail
102 AD system defect
104 Flash check sum wrong
106 Most recent settings resto-
red
107 Self test failed
109 Configuration incomplete
210 Fresh air calibration failed
220 Span calibration failed/Ca-
libration grace period ex-
pired
240 Bump test failed
Remedies
Perform span calibration.
Perform bump test.
Remedies
Contact Service
Contact Service
Contact Service
Recalibrate device
Contact Service
Configure again
Repeat operation
Perform span calibration.
Repeat bump test or calibrate
device