Interroll DL Series - Page 50

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Version 1.2 (08/2022) en
Translation of original operating instructions
Troubleshooting
Fault Possible cause Remedy
Drum motor runs
with interruptions
Drum motor/belt is
occasionally or partially
blocked
Ensure that belt and drum motor are not blocked and that all
rollers and drum shells can turn freely.
Incorrect or loose power
cable connection
Check connections.
Gear box is damaged Check by hand if the drum shell can be turned freely.
If not, replace the drum motor or contact the local Interroll dealer.
Incorrect or faulty voltage
supply
Check the voltage supply.
For single-phase motors: check capacitors.
Drum motor/belt
runs more slowly
thanspecied
Incorrect motor speed
ordered/ delivered
Checkdrummotorspecicationsandtolerances.
Replace drum motor or contact the local Interroll dealer.
Drum motor/belt is
occasionally or partially
blocked
Ensure that belt and drum motor are not blocked and that all
rollers and drum shells can turn freely.
Incorrect settings at
frequency inverter
Check whether the frequency inverter settings meet the
specicationsofthedrummotorandchangethem,ifnecessary.
Belt slips See the fault „Belt slips on drum motor”.
Drum motor/belt
runs more slowly
thanspecied
Coating slips on the drum
shell
Check condition of coating and fasten coating to drum shell.
Replace coating. Sandblast or abrade drum surface to guarantee
good adhesion of the coating.
Useofa60-Hzmotorin
a50-Hzsupplysystem
Checkwhethermotorspecicationsandtolerancescorrespondto
the supply voltage/frequency.
Replace drum motor or contact the local Interroll dealer.
Drum motor
runs faster than
specied.
Incorrect motor speed
ordered/ delivered
Checkdrummotorspecicationsandtolerances.
Replace drum motor or contact the local Interroll dealer.
Incorrect settings at
frequency inverter
Check whether the frequency inverter settings meet the
specicationsofthedrummotorandchangethem,ifnecessary.
Useofa50-Hzmotorin
a60-Hzsupplysystem
Checkwhethermotorspecicationsandtolerancescorrespondto
the supply voltage/frequency.
Replace drum motor or contact the local Interroll dealer.
Thickness of rubber
coating increased the belt
speed beyond the rated
speed of the motor
Measure thickness of rubber coating and check whether this value
was considered and calculated when the drum motor speed was
selected.
Reduce thickness of rubber coating, install a frequency inverter or
install a new drum motor with lower speed.