Donaldson Torit TBI 3 Installations- und Betriebshandbuch - Seite 17
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Problem
Excessive vibration
Inadequate performance
Excessive noise
Probable Cause
Externally transmitted vibration
Accumulation of foreign
material on the wheel
Excessive system pressure or
restriction of airflow due to
closed dampers
Fan running too slowly
Fan wheel rotating in wrong
direction or installed backwards
on shaft
Poor system design, closed
dampers, air leaks or clogged
filters
Sharp deflection of airstream at
fan outlet
Missing discharge fittings
Fan operating near "stall" due
to incorrect system design or
installation
Vibration originating elsewhere
in the system
Loose accessories or
components
Torit Backward Inclined Fan, TBI-3 through 30
Remedy
Isolate collector from external vibration.
Clean the wheel.
Open dampers far enough for fan to operate in stable
flow regime.
Check power frequency against fan motor design
frequency.
Proper fan rotation is clockwise from the top of the
fan. The fan can be viewed through the back of the
motor.
Check system for damper positions leak points.
Check filter Delta P.
Do not place fan discharge next to a wall.
Install discharge fittings.
Correct system or replace with correctly sized fan.
Vibration isolate collector from the system.
Tighten accessories or components.
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