Interroll DL Series - Page 51

Version 1.2 (08/2022) en
Translation of original operating instructions 51 of 64
Troubleshooting
Fault Possible cause Remedy
Motor winding:
one phase failed
Failure/overload of
winding insulation
Check continuity, current and resistance of each phase winding.
Replace drum motor or contact the local Interroll dealer.
Motor winding:
two phases failed
Power failure in one
phase which leads to
overload in the other two
phases/ separating failure
Check power supply to all phases. Check continuity, current and
resistance of each phase winding.
Replace drum motor or contact the local Interroll dealer.
Motor winding:
three phases
failed
Motor overload/incorrect
power connection
Check whether the correct supply voltage is applied.
Check continuity, current and resistance of each phase winding.
Replace drum motor or contact the local Interroll dealer.
Belt slips on drum
motor
Belt blocked Ensure that belt and drum motor are not blocked and that all
rollers and drum shells can turn freely.
Friction between drum
motor and belt too low
Check condition and tension of the belt. Check condition of drum
shell or coating.
Check whether there is oil or grease 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
suction/draft occurs.
Belt tension too low Check condition of belt, and tension or shorten it.
Drumproletoolowor
incorrect for link belt
Ensurethatbeltanddrumproles/teethareconnectedcorrectly.
Ensure that height and tension of belt meet the manufacturer’s
specications.
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 small for the belt
Check minimum drum diameter for belt. Knife edges/rollers with
small diameters can cause excessive friction and therefore require
more power.
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.