Interroll DL Series - Page 49

Version 1.2 (08/2022) en
Translation of original operating instructions 49 of 64
Troubleshooting
Fault Possible cause Remedy
Motor heats up
during regular
operation
Overload of drum motor Check rated current for overload.
Ensure that the motor is not rubbing against the conveyor belt
frame.
Ambient temperature
above 40 °C
Check ambient temperature. If the ambient temperature is too
high, install a cooling unit. Contact the local Interroll dealer.
Excessive or frequent
stops/starts
Do not use DL series motors for start-stop operation.
Belt tension too high Check belt tension and reduce as necessary.
Motor is not suitable for
the application
Checkwhethertheapplicationmeetsthespecicationsofthe
drum motor.
Use special reduced-power motors for operation with link belts or
without belts.
Coating too thick Replace coating or contact the local Interroll dealer.
Incorrect voltage supply Check the voltage supply.
For 1-phase motors, ensure that the correct starting or running
capacitors are used.
For 3-phase motors, ensure that no phase has failed.
Incorrect settings at
frequency inverter
Check whether the frequency inverter settings meet the
specicationsofthedrummotorandchangethem,ifnecessary.
Loud noise of
drum motor
during regular
operation
Incorrect settings at
frequency inverter
Check whether the frequency inverter settings meet the
specicationsofthedrummotorandchangethem,ifnecessary.
Loose motor mount Check motor mount, shaft tolerances and fastening screws.
Belt tension too high Check belt tension and reduce as necessary.
Wrong/incorrectprole
between drum shell and
belt
Ensurethatbeltanddrumprolematchandarecorrectly
connected. Replace as needed.
Observe belt manufacturer’s installation guidelines.
Drum motor incorrectly
mounted
Check the mounting position for that serial number.
An outer conductor failed Check connection, check power supply.
Drum motor
vibrates heavily
Incorrect settings at
frequency inverter
Check whether the frequency inverter settings meet the
specicationsofthedrummotorandchangethem,ifnecessary.
Loose motor mount Check motor mount, shaft tolerances, and fastening screws.
Drum motor runs
unevenly
Checkwhetherthespecicationsofthedrummotorcontainstatic
or dynamic balancing and adjust the motor. Single-phase motors
naturally do not run completely evenly and, for this reason, are
louder and vibrate more than three-phase motors.