Sterlco SGBD Series Batch Gravimetric Blenders - Manual (Page 58)

BLN1-600 Chapter 4: Operation 58 of 110
Mixer and Dump Setup
Mixer Options
Press the “Timed/Continuous Mixing” key (In the top right hand corner) when in “Mixer and
Dump Setup” screen to set the following options:
Timed Mixing Option
This mode of operation turns the mixer on only during dumping and during the re-mix
time set into the control to jog the mixer during high level mixer operation.
Continuous Mixing Option
This mode of operation turns the mixer on after initial startup and will continue to run
continuously, unless the remix time is set to jog the mixer during high level mixer
operation. This option is used for sticky materials that tend to bridge and block off the
mixer discharge to the processing machine.
Mix Timer
The mix timer is the amount of time that the mix motor will mix the material after it has
entered the mixing section of the Slide Gate/Auger blender. The timer has a range of 1 to 999
seconds.
To set the value of the mix timer, the user must gain access to the Setup Menu. After entering
the Setup menu, the user must select “Mixer and Dump Setup.”
Figure 40: Typical Mixer and Dump Setup Operator Screen
Selecting “Mixing Time” from the “Mixer and Dump Setup” menu will allow the operator to
view the current time setting for the mix timer and to adjust it as needed.
The mix timer is set to a default time of four (4) seconds. This time can be adjusted up or
down depending on the amount of mixing needed for the materials being blended.
It is recommended that the mix time be held to the minimum, as segregation can occur from
over-mixing if the material bulk density and pellet configuration varies with materials in the
particular blend being processed.
Re-Mix Timer
In some applications, the Slide Gate/Auger blender will require the use of the re-mix timer.
Some materials tend to separate if they are mixed too long. This is possible when a
processing machine is running at a rate significantly below the capacity of the blender.
With external vibration, the heavier pellets will tend to flow to the bottom of the mix chamber
before the lighter material. This will occur even though the mixer is in a static mode. By re-
mixing occasionally, this situation will be prevented.
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