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.
7.2 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 9 and if necessary please con-
tact Dräger.
8 Changing the sensor
Danger of explosion! Do not change the sensor 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 sensors not to damage or short out compo-
nents, and do not use sharp tools to remove the sensors.
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.
– 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.
6
WARNING
Notice
Notice
9 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
10 Changing dust and water filter
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