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Thunderbird T30 - Page 2

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Store the indicator in a dry area away from moisture when not in use. Although it has a
gasket seal to prevent water ingress, repeated cycling of warm and cool from day to night in a
damp area may cause a build up of moisture inside the indicator.
Do not transport weigh bars or load cells with a weight on them. If the vehicle goes over a
bump, the resulting ‘G’ forces increase the effective weight applied, which may exceed the load
cell capacity, causing damage to the load cells. Load cells that have had excessive weight
applied to them are not covered by warranty.
Power
The T30 has internal Ni-MH batteries that can be recharged with the provided plug pack
or by a 12V battery. It can also be powered by 4 x AA batteries. The AA batteries are
inserted in a removable battery pack and placed in the battery compartment at the rear
of the indicator.
A battery level indicator is displayed while the scale is operating, which gives an
indication of the time remaining before the batteries go flat. The lowest segment will
start flashing when the battery level is low and the charger is not plugged in. Turn off
the indicator and replace or charge the batteries when this occurs.
To conserve the batteries, the T30 will turn itself off after 30 minutes if no keys have
been pressed or the weight hasn’t changed.
Note: All statistics will be lost if the internal batteries are flat and the AA batteries are
removed without first turning off the indicator.
Good quality alkaline AA batteries will power the scale for up to 30 hours running time.
Rechargeable AA batteries may be used, but the battery level indicator will not be as
accurate.
The fully charged internal Ni-MH batteries will power the scale for up to approximately 8
hours of use. Ni-MH batteries will self-discharge over time though, so it’s best to charge
the scale overnight before use. It takes around 10 hours of charging to fully charge the
internal batteries.
The battery indicator will flash a segment whenever the internal battery is charged, even
when the scale is turned off. The segment flashing depends upon the battery voltage.
The indicator will display the battery condition during charging while it’s turned off, and
automatically shut down when the charger is removed or turned off.
Note: The internal batteries will not be charged if the charging voltage is less than
7.5V. The provided charger is rated at 9V, so will adequately charge the batteries.

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