Notes - rosenberg DQ 200 Ex Betriebsanleitung

Fault
Fan is not rotating.
Fan turns but there is no
or not enough airflow.
Vibrations / noises in fan.
RCD-Switch or fuse trips.
16 Notizen
20
Possible cause
No supply voltage present
or missing of a single
phase.
Rotation speed of the fan
too low
Air flow interrupted
Calculated pressure does
not correspond to the real
value.
Unfavorable installation
conditions
Chafing of impeller
Deformation
Dirty impeller
Damaged ball bearings
Ground fault or short
circuit.
Defect of the motor
Action
Check the supply voltage
directly on the fan.
If not all phases are
measureable check the
fuses and the wiring of the
service switch.
Observe star / delta
switching.
Check duct system
(e.g. suction, filter, sealing
caps).
Check fan selection.
Check the installation
situation.
Chafing of impeller. Check
impeller for dirt and clear-
ance. Check mounting of
Impeller and inlet cone
Stop fan immediately.
Contact Rosenberg sup-
port
Clean impeller
an impeller.
Damaged ball bearings.
Stop fan immediately.
Contact Rosenberg
support
Check if the cables are
damaged or
moisture is present.
Contact Rosenberg sup-
port

Notes

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