User manual

91
Version 2.4 (10/2011) en
Original instructions
Drum Motor
Installation
Tensioning the belt The necessary belt tension depends on the application. Refer to the belt
manufacturer's catalog or contact Interroll for advice.
¾ Adjust the belt tension by tightening or loosening the respective screws on
both sides of the conveyor to ensure that the Drum Motor remains square to
the conveyor frame and parallel to the tail / idler pulley.
¾ Tension the belt sufficiently only to drive the belt and its load.
Rubber lagging
Subsequently applied rubber lagging may cause overheating of the Drum Motor.
For certain Drum Motors limitations to the thickness of lagging may apply.
To help to reduce thermal overload, the calculated required power should be
multiplied by a factor of 1.2.
Sprockets fitted to the shell
For modular belt operation a sufficient number sprockets must be fitted to the
drum shell to support the belt and pull the load. Sprockets that engage the belt
must be floating to ensure thermal expansion of the belt. One sprocket only may
be fixed to guide the belt, alternatively the belt can be guided at the sides.
Risk of shortened life expectancy, worn bearings and
oil leakage due to overstretched belts.
¾ Do not tension the belt more than recommended by the
belt manufacturer or than given in the product tables of
the catalogue.
¾ When using a modular belt, a steel belt, a Teflon
fiberglass belt, or a PU thermal moulded belt, no belt
tension should be applied (refer to the belt
manufacturers instructions).
Hint
When applying rubber lagging, contact Interroll for the type and maximum
thickness allowed.
Risk of damage to the belt
¾ Do not use a fixed sprocket together with side guides.