Troubleshooting - Tru-Test Extreme Guia De Inicio Rapido

Troubleshooting

8
Fault
Tru-Test indicator does not
automatically identify and
calibrate to the load cells.
Reading does not return to
zero between animals.
OR
Difference in readings at each
end of the chute/crush by 5 lb
(2 kg).
Under reading (readings
lighter than expected).
OR
Difference in readings at each
corner of the crush/chute by
more than 5 lbs (2 kg) or 1%
(whichever is greater).
No reading
Negative reading
Reading unstable
Reading is unstable, display
shows underload or overload
then displays a reading if
cable moved.
4
Remedy
Update the software in your Tru-Test indicator.
Check for binding. Ensure that the chute/crush is not touching any other part of the race
work or concrete pad. There must be no debris (e.g. stones or dung) lodged around the
load cell and their mounts and the chute.
Corners may not be level. Check that the chute/crush is levelled correctly so that the
load is shared equally at each load cell.
Check items above.
Check that all the load cell wires are joined inside the junction box. Either stand on each
corner of the crush/chute and note which corner gives the lowest reading, or open the
junction box and check that all wires are connected.
Check that all load cells have been installed with the label "TOP" in the same direction.
This applies to new installations or for replacement load cells.
Check for damaged load cell cables. If a cable is damaged, return the load cell for
servicing.
Inspect junction box to make sure that all the same colour wires are joined together.
Load cells have been installed upside-down.
If all load cells have been installed the same way, you can correct this by reversing the
signal:
Connect the red wire from the indicator to the white wires from the load cells.
•
Connect the white wire from the indicator to the red wires from the load cells.
•
Moisture in the junction box. Open the junction box. Dry the junction box and the
terminal connector.
Moisture in the load bar connectors. Remove moisture from the plugs and caps using
methylated spirits, ethyl alcohol, or a suitable electrical contact cleaner. Do not use
stronger spirits, as they react with the plastic.
Damaged cable. Return the load cell for servicing.
Moisture in load cells. Return the load cell for servicing.
Damaged cable. Return the load cell for servicing.