Sterlco BP800 Series Granulators - Manual (Page 25)

800 Series beside-the-press Chapter 5: Maintenance 25 of 43
1. Verify that the alignment of the pulley is correct. Utilizing a
straightedge of sufficient length to span from one pulley to
the other, place it along the sides of both pulleys. The entire
face of each pulley should fully contact the straightedge.
2. Measure the belt SPAN with a measuring tape. Record this
dimension in your note book.
3. Using the deflection tester, apply a perpendicular force at the
midpoint of any one of the belts to deflect the belt 1/64 th of
an inch.
4. Calculate the deflection force:
FORCE[Lb]= SPAN[IN] X (1/64)[Lb/IN]
5. Identify the belt type and measure the small sheave diameter.
Look up the proper model belt deflection force table and find
out what the force is supposed to be.
6. The motor position should be adjusted until the actual
deflection force matches the force listed in the table.
7. In no case should the belts be over tensioned, as this can
significantly reduce belt and/or bearing life.
BELT
SPAN