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The top foam has been removed.
The sensor on the detector main board detects when the top foam is in place. If the foam
is removed, the fan is switched off, and the error message is generated.
• The top foam was removed during operation.
• Foam not activating the sensor.
✔
✔
1100 Series DAD and MWD Reference Manual
Probable Causes
Suggested Actions
Replace the top foam.
Exchange the foam.
Troubleshooting and Test Functions
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