Conair WSB - Manual (Page 79)

INCREASING THROUGHPUT
A correctly sized blender should have throughput that always exceeds
your process requirements.
If, for some reason, your blender is not keeping up, here are a few
ways to increase throughput.
1. If your blender is equipped with a flow control slide gate, under
the blender, this will reduce throughput up to 25 percent. To
counter this, set the "END FULL" flag on using the *44 function
explained earlier. In the END FULL mode, blending begins even
while the sensor is still covered due to flow control valve
operation.
2. If your process consumes a large batch of material all at once
(such as during injection and screw return time), and material
reserve is not adequate, you may "run out" of material for a few
seconds while the Weigh Scale blender is making a new batch. The
*44, "END FULL" function will also correct this. Here, when the
sensor is uncovered, a completed batch is immediately available to
help refill the mix chamber, providing a larger reserve to the
process.
3. Increase the FUL parameter. This sets the batch size. Larger
batches increase throughput. Depending on the bulk density of your
material, you may be able to increase batch size by 20 to 40
percent.
4. Reduce the DTI parameter. This is the number of seconds the weigh
bin opens to empty each batch. Shorter DTI times will shorten the
overall cycle time and increase throughput.
5. Turn "FAST" on. This causes rapid volumetric "timed" dispenses to
occur up to 4 times after each normal gravimetric dispense.
6. Do not confuse "reserve" with "throughput". If your blender has a
temporary problem which results in your process running out of
material before you have time to remedy the problem, your "reserve"
is inadequate. Add a surge hopper, or material level alarms on
individual hoppers to prevent these types of problems.
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