BW Defender2
If the Detector Does Not Work
41
Table 13. Troubleshooting Tips (cont.)
Problem Possible Cause Solution
Activation self-test fails during one of
the first five steps.
General fault. → Contact BW. (See page 2.)
Detector does not display normal
ambient gas reading after activation
self-test.
Sensor not stabilized.
Detector requires calibration.
Target gas is present.
→ Used sensor: wait 60 seconds
New sensor: wait 5 minutes
→ Calibrate detector.
→ Detector is operating properly. Use
caution in suspect areas.
Detector does not respond to
pushbuttons.
Battery is depleted.
Detector is performing operations
that do not require user input.
→ Replace battery.
→ Pushbutton operation restored
automatically when the operation
ends.
Detector does not accurately
measure gas.
Detector requires calibration.
Detector is colder/hotter than
ambient gas.
Sensor screen is blocked.
→ Calibrate sensor.
→ Allow detector to acquire ambient
temperature before use.
→ Clean sensor screen.
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