User manual

109
Version 2.4 (10/2011) en
Original instructions
Drum Motor
Troubleshooting
Motor does not start or stops during
operation
Low ambient temperature / high oil
viscosity
Check if oil viscosity is suitable for the
ambient temperature. If not, replace with
oil having the correct specification.
Install heating device or higher powered
Drum Motor. In this case, contact your
local Interroll distributor for further help
and advice.
Transmission or bearing seizure Check by hand wether the drum can
rotate freely.
If not, replace Drum Motor or contact
your local Interroll distributor for further
help and advice.
Motor runs but drum does not rotate Loss of transmission Contact your local Interroll distributor for
further help and advice.
Motor gets hot during normal
operation
Overload of Drum Motor Check nominal current for overload.
Ambient temperature over 40 °C Check ambient temperature. If too high,
install cooling device. Contact your local
Interroll distributor for further help and
advice.
Excessive or frequent stops/starts Check if the number of stops/starts
meets the Drum Motor's specifications
and reduce frequency as necessary.
Install frequency converter to optimize
motor performance.
Excessive belt tension Check belt tension and reduce as
necessary.
Motor is not suitable for the
application
Check if application meets the Drum
Motor's specifications.
Special de-rated motors are required
when working with modular belts or
without belts.
Lagging too thick Reduce lagging or contact your local
Interroll distributor for further help and
advice.
Incorrect power supply Check power supply. If in case of single
phase: possibly wrong start capacitors
or run capacitors installed.
Incorrect frequency converter
settings
Check if frequency converter settings
meet the Drum Motor's specifications
and revise.
Symptom Possible cause Help