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Determining the cause and measures can be carried out in the order shown.
After every measure, you should switch on the extraction unit again and check whether the minimum flow
rate is again exceeded so that correct operation is possible again.
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⇒ Work should only resume after the fault has been rectified and the minimum flow rate is exceeded
again. It is also the case with multi-workbench extraction units that work must be interrupted at all con-
nected suction points until the fault is rectified.
Checking function
Every day when beginning your work, check the function of the SILENT flow sensor as described in the
sections "Zero Adjustment (Taring)", "Checking leak-tightness" and "Checking function".
Cleaning / Maintenance
The unit does not contain any internal parts that require maintenance.
Do not use compressed air!
Compressed air irreparably damages the sensitive measurement equipment.
Using compressed air to blow off deposits of dust is generally not permitted.
To clean the unit, only wipe the outside with a damp cloth.
Do not use any solvent-based or abrasive cleaning agents.
Effectiveness of the measurement equipment
The effectiveness of the measurement equipment must be checked annually as described in the sections
"Checking leak-tightness" and "Checking function".
Disposal information
For this reason, equipment with this symbol may not be disposed of in unsorted domestic waste
within the European Union.
Please contact your local authorities for more information on proper disposal.
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Subject to change
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