David White LR 410H, Owner'S Manual

Page: 12 / 22

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OPERATION
!
WARNING
Do not subject the
instrument to
extreme temperatures or variations in
temperature. As an example, do not
leave it in vehicles for long time. In
case of large variations in temperature,
allow the instrument to adjust to the
ambient temperature before putting it
into operation. In case of extreme
temperatures or variations in
temperature, the accuracy of the
instrument can be impaired.
Avoid heavy impact to or falling
down of the instrument. After severe
exterior effects to the instrument,
it is recommended to carry out an
accuracy check each time before
continuing to work.
This instrument has been calibrated
to precise accuracies at the factory.
However, an accuracy check is
recommended before the initial
use of the instrument and then
periodically. See Accuracy Check.
Setting Up the Instrument
Position the instrument on a firm
surface, mount it to a tripod or to
the wall mount with alignment unit.
Due to the high leveling accuracy,
the instrument reacts sensitively
to ground vibrations and position
corrode and discharge themselves.
When using rechargeable Li-ion
batteries for the first time, be sure to
charge for several hours.
Charging Rechargeable
Li-ion Battery Pack
(sold separately)
If you are using rechargeable
Li-ion battery pack, following these
instructions.
Insert the charger into the wall outlet.
Remove the charging port plug
11 and insert the charger plug into
charging port 10 of the instrument.
The charger indicator 9 will display:
1. Red light - Battery is charging
but not fully charged. Make take
up to 7 hrs to fully charge
2. Green light - Battery is fully
charged and ready for use
Requirements for the charger:
Frequency: 50-60HZ; Voltage: 100-
240V (0.36A).
Instrument can be used while
charging rechargeable battery pack.
Brand-new rechargeable batteries
or rechargeable batteries unused for
long period need to be recharged
and discharged three times to attain
full capacity.