Interroll DL Series - Page 52

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Version 1.2 (08/2022) en
Translation of original operating instructions
Troubleshooting
Fault Possible cause Remedy
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 blocked and that 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, as well as condition of
coating.
Check belt tracking and belt adjustment.
Incorrect coating/sprocket
proleforlinkbelt
See the fault „Belt slips on drum motor”.
Oil leaking at
shaft seal
Shaft seal worn Check whether adverse chemical or abrasive materials/
conditions are present.
Check service life of seals.
Shaft seal damaged Ensure that there are no steel residues, material deposits, or other
particles on the seals.
Cap bearing damaged/
worn
Check whether the belt is tensioned too much or overloaded.
Check whether water or chemicals have entered.
Excess grease in labyrinth
seal
Checkwhetheroilorgreaseareleaking.Oilremainsuidand
grease hardens when it cools down.
Remove excess grease. If the problem persists, contact local
Interroll dealer.
A small amount of grease leaking in the DL series is normal and
not a problem.
Oil leaking at
cable/ terminal
box
Loose cable connection
socket
Defect at internal cable
seal
Ensure that cable connection socket and seals are tight and not
stressed by overheating or chemicals.
Loose cable connection
socket Seal at terminal
box defective
Ensure that cable connection socket and seals at terminal box are
tight and not stressed by overheating or chemicals.
Oil leaking at
drum shell/ end
cap
End cap in drum shell is
loose
Check whether there are gaps between the drum shell and end
covers.
Check whether the belt is tensioned too much or impact-loaded.
End cap/drum seal
defective
Check whether the belt is overheated, tensioned too much or
impact-loaded.