Sterlco ST500 Series Central Granulator - Manual (Page 54)

54
SETTINGS AND ADJUSTMENTS
SECTION 4-20
Drive Belt Replacement Or Adjustment
COMPARE MEASURED FORCE TO
RECOMMENDED FORCE
Compare the deflection force measured, to the
value shown in the table.
For new belts the value for run-in should be used.
For belts, which have been running two days or
more, use the values for normal running.
ADJUST THE BELT TENSION
Adjust the sliding motor base to increase the belt tension by turning
the adjusting screws clockwise.
When the tension has been increased significantly, recheck it using
the procedure just described.
Repeat the process of adjustment and tension checks until the
allowable deflection is achieved while the deflection force is within
the range shown in the table.
Tension new drives at the maximum deflection force
recommended.
Check the tension at least two times during the first two days of
operation. There is normally a rapid decrease in tension until the
belts are run in.
Check the tension periodically after the first day of operation and
keep the tension in the recommended range-
The correct operating tension for a V-belt drive is the lowest
tension that allows NO belt slip under peak load conditions.
If the deflection is more than the specified deflection at the
recommended force, tighten the belts. If the deflection is less than
the specified deflection at the recommended force, loosen the belts.
TIGHTEN THE MOTOR BASE BOLTS
Tighten down the motor mounting bolts.