AEC OS Series Gravimetric Batch Blenders - Manual (Page 96)

Page 95 of 118
Problem Possible solution
Suspicious calibration. During the weigh hopper calibration, the operator may encounter a
suspicious calibration. This indicates that the calibration has varied
more than 10% from the factory calibration. Recalibrate and check
it again. If you are sure that the calibration is OK, then it is possible
that the wrong calibration is in memory to compare to. If this is the
case, press the key to force the computer to accept the
new calibration.
Weigh hopper does not
empty completely. Check the dump time setting. It may be set too short.
If this does not correct the problem, clean the weigh hopper and
recheck the scale diagnostics readout. If not showing (0) zero
when empty, re-calibrate the scale.
Blender does not make
rate. Verify application is not exceeding blender capacity.
Verify additive percentage is not higher than designed, resulting in
excessive dispense time.
Verify all materials are feeding freely through the metering gates or
augers.
Other service problems or questions can be answered by
contacting the AEC/HydReclaim Service Department.
7-2 Common Controller Error Codes
The following codes may be displayed on model OS and OA blenders:
Code Problem Corrective Action
Loadcell(s) read zero
(OA or OS) Check loadcell readings in
direct scale readout (refer to
“Diagnostics” section of
manual) 236
Control may be setup for 2
loadcells but only 1 is required
(OA blender only) Check setup parameters
(refer to manual under deep
diagnostics # of loadcells)
237 Some parameter that needs to
be set by the customer is set
to a zero value Most common one is the
batch size is set to zero
Trying to execute something
outside of the program Scrambled RAM chip (lift the
RAM chip for a few seconds &
reseat) 242
Power problem Low incoming 5 vdc to CPU
(adjust output of controller
power supply)