MAGUIRE Weigh Scale Blender 4088, Установка, эксплуатация и обслуживание

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8.
Load Cell weight readings are not holding steady. They vary as much as 100 grams
from second to second.
•
Static induced poor grounding of load cells. See Wiring Considerations.
•
If TARE weights are not steady, something may be physically interfering with free
movement of the weigh bin and load cells.
9.
At the end of each cycle the MIX MOTOR runs for a fraction of a second only.
•
The MIX MOTOR pulls a heavy amp load on start up. If the power supply is not
adequate (like when using an extension cord), the voltage will drop so low that the
computer will reset and the mix motor signal will shut off. The display will show this by
restarting as if power was just turned on. Provide a better supply of power; remove
extension cord or use larger gage wire.
Mix Problems
Customers with mix problems have several options available.
Decrease the batch size by lowering the FUL parameter value. This does two things. First,
it causes the components to be dispensed in smaller, more frequent batches, which places
more and smaller layers of material into the mix chamber. Second, it lowers the level of
material in the mix chamber immediately after a dispense. It is critical to proper mixing that
the mix blades reach up through the top of the material in the mix chamber during mix time.
Dispensing a large batch may bury these blades, particularly when the process is not
running at full blender capacity. A smaller batch size, while reducing throughput rate, will
help prevent the mix blades being covered during mix time.
Be sure level sensor is mounted in its lowest position, and increase sensitivity as much as
possible. Both serve to keep a batch from being dispensed so early as to cover the mix
blades.
On units without flow control valves (FCA), increase the DLY parameter to as number as
high as 50 percent of the time between cycles. DLY is the time delay (in milliseconds) from
the sensor being uncovered until we begin the batch. Increasing DLY allows the mix
chamber to empty somewhat before the next batch drops.
You may increase the mix time at the end of each batch by changing the last two digits of
the MIX parameter. If throughput is very high it may be better to run the mixer
continuously. However, added mix time sometimes causes separation after an initial
mixing. Different bulk densities and static electricity both aggravate this potential for
separation from excessive mixing.
If a blender is mounted on a stand over a surge hopper, there should be a FCA, automatic
flow control valve, fitted to the bottom of the blender. This valve must be plumbed so that it
is closed when the level sensor is uncovered. When the sensor is covered the valve opens
to release material. The purpose of this valve is to ensure mixing. The FCV parameter
delays the opening of this valve for 6 seconds. You can increase this delay time if you feel
additional mixing is required before release.