Interroll Drum motor series i, S, S/A, D
Troubleshooting
Version 4.1 (06/2015) en-US
Translation of original instruction manual
99
Fault
Possible cause
Remedy
Drum motor vibrates heavily
Wrong settings at frequency
inverter
Check whether the frequency inverter settings meet the
specifications of the drum motor and change them if necessary.
Loose motor mount
Check motor mount, shaft tolerances and fasteners.
Drum motor runs unevenly
Check whether the specifications of the drum motor contain a
static or dynamic balancing and adjust it. Single-phase motors
naturally do not run completely even and, for this reason, are
louder and vibrate more than three-phase motors.
Drum motor runs with
interruptions
Drum motor/belt is
occasionally or partially
blocked
Ensure that belt and drum motor are not being blocked and all
rollers and drum shells can turn freely.
Wrong 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 drum motor or contact local Interroll dealer.
Wrong or faulty voltage
supply
Check the voltage supply.
For single-phase motors: Check capacitors.
Drum motor/belt runs more
slowly than specified
Wrong motor speed ordered/
delivered
Check drum motor specifications and tolerances.
Replace drum motor or contact local Interroll dealer.
Drum motor/belt is
occasionally or partially
blocked
Ensure that belt and drum motor are not being blocked and all
rollers and drum shells can turn freely.
Wrong settings at frequency
inverter
Check whether the frequency inverter settings meet the
specifications 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 specified
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.
Use of a 60-Hz motor in a 50-
Hz supply system
Check whether motor specifications and tolerances correspond
to the supply voltage/frequency.
Replace drum motor or contact local Interroll dealer.