AEC OS Series Gravimetric Batch Blenders - Manual (Page 72)

Page 71 of 118
5-8-20 Manual Mode
From the run mode sub-menu (described in section 5-8-19), the
operator may enter the manual mode of operation. Manual mode is
selected by pressing the <0>. This mode will run the blender on timed
cycles in the event of load cell failure.
Note: Manual backup mode should not be used on a fully functioning
blender.
Upon entering manual mode, the operator will be prompted for the use
of the weigh hopper dump valve. The options are “yes” or “no.” If the
dump valve is used (YES), the material will be collected in the weigh
hopper and then dumped into the mixer as a batch. If the dump valve is
not used (NO), it will remain open at all times and simply flow through
the mixer as it is metered.
After the selection on the dump valve is made, the operator will be
asked about the use of the mixing section. The options are “yes” or
“no.” If the operator uses the mix motor (YES), the mix motor will run
using the mix timers set up in the setup chapter. If the operator chooses
not to run the motor (NO), the mixer will never turn on.
Once the mix motor section is selected, the operator will be prompted to
enter metering times for each feeder that is running in the current
recipe. These feeder times may be entered in terms of the nearest 0.1
seconds.
Once all the feeder times are entered, the OS/OA will continuously run
batches of material and cycle off the high-level proximity switch.