Section 3 --Operation and Adjustments 3- 6
© 2008, Satake USA Inc.
(ALL RIGHTS RESERVED)
3.2.6 ADJUSTING EJECTOR DWELL TIME
The ejector dwell time is the amount of time that the ejector is kept on after it is
actuated. If this time period is too short, the defective products will not be removed
from the accepts. If this time period is too long, excess acceptable product will be
diverted to the rejects. The DWELL can be adjusted as described in Section
2.5.1.4.2.
3.2.7 ADJUSTING EJECTOR DELAY
The ejector delay time is the amount of time required for a product to travel from
the viewing point to the rejection point.
During check out at the factory, the DELAY control is set at its optimum point. This
is done by sorting a product similar to the product that will be sorted at the
customer’s plant. The DELAY control should be left at this setting unless the
machine is missing obvious, very dark defects on all channels.
The delay time can be verified by changing the DELAY control one increment at a
time and checking the accepted product on all channels. Increase the setting of the
DELAY button until the machine starts to miss obvious defects. Decrease the setting
of the DELAY button until the machine again starts to miss obvious defects. A
setting midway between these two points should provide the best sort.
3.2.8 ADJUSTING THE FEED RATE
The amount of product supplied to the chutes is controlled by how far the feeder
gates are opened, and the amplitude of feeder vibration.
A certain amount of product can be delivered to the chutes if the gates are opened a
large amount and the amplitude of feeder vibration is low. This can result in
clumps of product with a large space between clumps entering the chutes.
The same amount of product can be delivered to the chutes if the gates are opened
less and the amplitude of vibration is increased. This provides a more constant
instantaneous feed rate, and a better sort.
The feed rate should therefore be adjusted by setting the FEEDER RATE control to
about 750 and opening the feeder gates only enough to provide the desired
production. The gates should all be opened an equal amount. When tightening the
gate lock screw, make sure that the gate is level. A gate that is not level may cause
uneven flow to the channels within a chute.
The feeders are numbered as follows:
No. 1 FEEDER for channels 1-30
No. 2 FEEDER for channels 31-60
No. 3 FEEDER for channels 61-80
It is important that all three of the feeders supply product at the same rate, unless
one of the feeders is being used for resort. This will ensure that all channels sort at
the same rate.
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