User manual

113
Version 2.4 (10/2011) en
Original instructions
Drum Motor
Troubleshooting
Belt misaligned / tracking off center Material build-up on Drum Motor /
pulleys / belt
Make sure the belt and drum are free
from obstructions and that all rollers and
drums rotate freely.
Check belt joint.
Material build-up on rollers Check if material spillage occurs and
that cleaning devices are functioning
correctly.
Faulty belt or badly joined belt Check condition of belt and belt joint.
Belt tension higher on one side Make sure that the belt tension is equal
on both sides.
Top / bottom rollers out of alignment Check alignment of carrying and return
rollers.
Head / tail / intermediate pulley out
of alignment
Check alignment of Drum Motor and
pulley.
Conveyor frame out of alignment Make sure conveyor frame is square,
parallel and straight over its length.
Load feeding from one side Check force or friction at point of
transfer.
Belt profile not engaged with drum
profile
Make sure the belt and drum profiles
match and are engaged properly and
not misaligned.
Insufficient drum crowning for belt Check belt / Drum Motor specifications.
Oil leakage around shaft seal Shaft seals worn Check for adverse abrasive or chemical
conditions.
Check operational life of seals.
Shaft seals damaged Make sure the seals are free from steel
framework, material build up and other
devices.
Shaft bearings damaged / worn Check the belt for excessive tension
and loading.
Check for water or chemical infiltration.
Excess grease in labyrinth sealing Check for oil or grease leakage. Oil
remains fluid and grease will solidify
when it is cold.
Clean away excess grease. If symptom
persists, contact your local Interroll
distributor for help
Oil leakage around cable / Terminal
Box
Loose cable connector gland
Internal cable seal fault
Make sure the cable connector gland
and seals are tight and not subject to
excessive heat or chemicals.
Loose connector gland
Terminal box seal fault
Make sure the Terminal Box connector
gland and seals are tight and not subject
to excessive heat or chemicals.
Symptom Possible cause Help