Page 6 - ConveyorBeltMaintenanceManual2010

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INSTALLATION, MAINTENANCE & TROUBLESHOOTING GUIDE
i n s t a l l a t i o n
For installations with a relatively high degree of slope (12 degrees or more), the method of handling is slightly different. The
roll of belt is set up as previously described. It is often found most convenient to place it at or near the head pulley, since this
generally is the most accessible. Assuming the conveyor is sufficiently long to require more than one splice, the conveyor side
and the return sides are threaded on separately. Care must be taken to see that conveyor side or heavier cover is up on the
carrying side and down on the return run.
As the belt is fed on, the tension at the roll tends to build up due to the weight of the belt on the slope. For this reason, some
method of braking is required. Customary practice is to use a belt clamp, mounted on the conveyor structure, through which
the belt is threaded. Where the slope is very long, additional clamps should be spaced approximately 1000 feet apart. Where
more than one clamp is used, workers are stationed at each clamp to loosen and tighten the clamps as the belt is fed onto
the conveyor. Care must be exercised that the belt does not run away. As a roll runs out, another is spliced on and then fed
onto the conveyor.
If the conveyor side and the return side have been fed on separately, the final splice is best made at the bottom of the slope
where the ends of the belt meet, since a much lower splicing tension will serve at this point. Making the final splice at the top
of the slope is entirely possible but requires proper splicing tension.
When pulling the belt onto the system, station personnel at key points along the conveyor to help avoid the belt from hanging
up on the structure resulting in belt damage. Pull the belt ends until they overlap the required splicing length.
To prevent the belt roll from over-running at the let-off, a braking device is often needed (Fig. 4).
Square to Round Shaft
Band Brake Material
Tensioning Means
Let-off Stands
Fig. 4