MANUAL RVK003

Operation
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9
11 Operation
Safety information
♦ Observe 2 Important safety information, page 1
12 Troubleshooting/maintenance/repair
Safety information
♦ Observe 2 Important safety information, page 1
12.1 Troubleshooting
Table 3 Troubleshooting
Problem Possible causes Remedy
Fan does not run
smoothly
Soiling on the impeller Clean carefully
Material decomposition on the impeller due
to aggressive material conveyed.
Contact Systemair
Impeller rotates in wrong direction. Contact Systemair
Deformation of impeller due to excessive
temperature.
Ensure that the temperature does not exceed
the certified value/Install new fan
Vibrations, oscillations
Check the installation of the fan/check the
duct system, see 8 Installation, page 6
Air output of fan too
low
Impeller rotates in wrong direction.
Contact Systemair
Wrong wiring configuration
Check and possibly correct the wiring
configuration
Pressure losses too high Optimize the line routing.
Flow regulators not or only partly open Check opening position on site.
Intake or pressure ducts are blocked Remove the blockage.
Dirty air filters of the ventilation system. Change filters.
Grinding sounds
when starting or
operating the fan
Check if the duct connections of the fan are
strained
Loosen the duct connections and realign it.
Thermal contacts/
resistors have
triggered
Impeller rotates in wrong direction.
Contact Systemair
Motor overheated
Contact Systemair
Motor blocked
Contact Systemair
Fan does not reach
nominal speed
Defective motor winding
Contact Systemair
Control units (if used) such as frequency
converter or transformer are set incorrectly.
Correct the settings of the control units.
Mechanical blockage Remove the blockage.
Motor does not
rotate
Faulty supply voltage
Check the supply voltage, re-establish the
voltage supply.
Faulty connection
Disconnect from the power supply, correct
the connection, see circuit diagram.
Temperature monitor has responded
Allow the motor to cool down, find and
resolve the cause of the fault.
Electronics/motor
overheated
Insufficient cooling Improve cooling.
Overloaded motor
Check if the correct fan is used for your
application.
Ambient temperature too high
Check if the correct fan is used for your
application.
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