Faults And Troubleshooting; Switching The Device On - SystemAir AxZent Betriebsanleitung

11.4

Faults and troubleshooting

Problem
Fan does not run smoothly
Air output of fan too low
Grinding sounds when starting or
operating the fan
Thermal contacts/resistors have
triggered
Fan does not reach nominal speed
Motor does not rotate
Electronics/motor overheated
Tab. 13: Troubleshooting
11.5

Switching the device on

Before switching the device on, check the device for externally visible damage and ensure that the protective equipment func-

tions properly.
Check the airways of the fan for foreign bodies and remove any found.

Apply the nominal voltage for supply.
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Start the device by altering the input signal.
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50
Possible causes
Rotor imbalance
Adhesions on the rotor
Material decomposition on the rotor due to
aggressive material conveyed
Wrong direction of rotation of rotor
Deformation of rotor due to excessive
temperature
Wrong direction of rotation of rotor
Excessive pressure losses in the lines
Flow regulators not or only partly open
Intake or pressure ducts are blocked
Intake line is strained
Capacitor not connected or not connected
correctly
Wrong direction of rotation of rotor
Motor blocked
Electrical switching devices set incorrectly
Defective motor winding
Incorrectly confi gured drive motor
Mechanical blockage
Faulty supply voltage
Faulty connection
Temperature monitor has responded
Insuffi cient cooling
Ambient temperature too high
Impermissible operating point
Troubleshooting/maintenance/repair
Remedy
Rebalancing by a specialist company
Clean carefully, rebalance
Contact the manufacturer
Contact the manufacturer
Contact the manufacturer
Install new rotor
Check mounting
Change direction of rotation
Change the line routing
Check opening position on site
Remove the blocks
Loosen intake line and realign
Connect capacitor
Change direction of rotation
Contact the manufacturer
Check and possibly reset setting of switching
device
Contact the manufacturer
Contact the manufacturer for check of start
torque
Switch off, disconnect from the power supply
and remove the mechanical blockage.
Check the supply voltage, re-establish the
voltage supply, apply control signal.
Disconnect from the power supply, correct the
connection, see circuit diagram.
Allow the motor to cool down, fi nd and resolve
the cause of the fault, release the reactivation
lock if required.
Improve cooling. Allow device to cool. To reset
the fault message, switch off the supply vol-
tage for at least 25 s and switch on again.
Lower ambient temperature. Reset by reducing
the control input to 0.
Allow device to cool.