2. Feeder Calibration
If feed rate from any one bin is to exceed the 50 tons per hour selected during aggregate scale
calibration the following changes must be made.
Open the bin gate on all feeders that will feed greater than 50 tons per hour.
The gates should be raised (opened) one inch per 10 tph. (i.e.-a 7 inch opening will result in an
expected maximum feed rate from the bin of approximately 70 tph).
Do not select a greater feed rate than the expected maximum.
-Keyboard press ESCAPE
-utilities (8), calibration (6), feeder rates (8).
-enter the expected maximum feed rate for the bin being calibrated
-By aggregate sample (4)
Select feeder (1), enter feeder number to be calibrated.
Do these 3 in sequence starting with feeder one.
Enter feeder 1.
Set test parameters (4).
Enter the anticipated flow rate at the normal plant production rate for the bin selected. (i.e. mix
design requires 40% course aggregates and asphalt production rate of 150 tph the selected
feeder for the course materiel will feed 60 tph).
Enter the moisture content for the materiel to be metered from this bin.
Enter the test time interval. (It is recommended that this interval should not be less than six
minutes and need not exceed 15 minutes.)
Press START for the following motors: