Interroll Drum motor series i, S, S/A, D
Troubleshooting
Version 4.1 (06/2015) en-US
Translation of original instruction manual
103
Fault Possible cause Remedy
Oil exiting at drum shell/end
cap
End cap in drum shell is loose Check whether there are gaps between drum shell and end
housing.
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.
Oil discolorization - silver-
metallic particles
Wear of gear teeth or
bearings
Check condition of bearings and seals.
Check whether an overload is present.
Oil discolorization - white
colorization
Contamination through water
or other liquid
Check condition and contamination through water/liquid.
Change oil (See "
Oil change at drum motor", page 91).
Oil discolorization - black
colorization
Extremely high operating
temperature
Overload
No belt installed
Check whether the application / operating conditions meet/
meets the specifications of the drum motor.
Check whether an overload current or high ambient
temperature is present.
Cable/terminal box defective
or damaged
Wrong operation by the
customer or damage during
installation
Check type of damage and possible cause.
Replace terminal box.
Damage during transport Check type of damage and possible cause.
Replace terminal box.
Cap bearing failed Overload Check whether the load of the application meets the
specifications of the drum motor.
Impact load Check whether the load of the application meets the
specifications of the drum motor.
Belt tension too high Check whether the belt is tensioned too much. Reduce belt
tension as necessary.
Poor lubrication Check oil level and installation of drum motor.
With vertical mounting or if the motor is tilted by more than 5°
(2° for 113S), check motor specifications of drum motor.
Loading or wrong adjustment
of shaft
Check whether screws have been overtightened and whether
frame or motor mount are incorrectly adjusted.
Shaft seal damaged/worn Check for external contamination.
Contact local Interroll dealer.
Loose or fixed seating of
bearing on the shaft
Contact local Interroll dealer.
Gear box failure Overload/impact load or
regular wear
Check whether the load of the application meets the
specifications of the drum motor.
Check service life.
Rotor bearing worn/failed Poor lubrication Check correct oil type and oil level.
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