Interroll Drum motor series i, S, S/A, D
Troubleshooting
Version 4.1 (06/2015) en-US
Translation of original instruction manual
101
Fault Possible cause Remedy
Belt slips on drum motor Belt blocked Ensure that belt and drum motor are not being blocked and all
rollers and drum shells can turn freely.
Friction too low between drum
motor and belt
Check condition and tension of the belt.
Check condition of drum shell or coating.
Check whether oil or grease is between belt and drum motor.
Friction too high between belt
and bracket/gliding plate
Check underside of belt and gliding plate for contamination /
defective surface coating.
Check whether water entered between belt and gliding plate
and a suction/draft occurs.
Belt tension too low Check condition of belt and tension or shorten it.
Drum profile too low for link
belt or wrong
Ensure that belt and drum profile / teeth are correctly
connected.
Ensure that height and tension of belt meets the manufacturer
data.
Oil, lubricant or grease
between belt and drum shell of
drum motor
Remove excess oil, grease or lubricant.
Ensure correct functioning of cleaning devices.
Diameter of start roller/end
roller/transfer roller too low
for the belt
Check minimum drum diameter for belt. Knife edges/roller with
small diameter can cause an excessive friction and, therefore, a
higher current demand.
Coating slips on the drum shell Check condition of coating and fix coating on drum shell.
Replace coating. Sandblast or abrade drum surface to
guarantee a good adhesion of the coating.
Belt skips on drum motor Belt blocked or material
deposits on the drum shells
Poor or damaged belt
connection
Friction too high between belt
and gliding plate
Ensure that belt and drum shell are not being blocked and all
rollers and drum shells can turn freely.
Check belt connection.
Ensure that the motor pulls the belt and does not push it.
Conveyor belt loose or
damaged
Check tension and condition of belt and condition of coating.
Check belt tracking and belt adjustment.
Wrong coating/sprocket
profile for link belt
See the fault "Belt slips on drum motor".
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