Delta LTL2000S Specifications download pdf (Page 29)

DELTA LTL2000S(Q) Retroreflectometer 25

SECTION 4

MAINTENANCE

General care

The Retroreflectometer is constructed for outdoor use in ordinary good weather conditions. It

will stand moist weather with wet roads, but caution must be taken against rain or splashes

and dirt from traffic. The LTL2000S(Q) Retroreflectometer is an optical instrument and shall

be handled as such. Avoid shock and vibration if possible.

Note

Protection window

The protection window is located in the optical unit. The protection window is coated with a

high efficiency anti reflection coating. Care must be taken not to damage this coating by

cleaning. A fine brush can be used for removing loose particles/dust. If this is not sufficient

the window should by cleaned using a soft paper tissue or cloth and some window cleaning

liquid.

Battery

The LTL2000S(Q) Retroreflectometer is powered by a sealed 12V/3.5Ah lead acid battery,

which under normal use requires no maintenance. However it is recommended to keep the

battery fully charged. A fully charged battery is more capable of withstanding low tempera-

ture and ageing.

Battery charger is provided as a standard accessory for charging the battery from mains. The

output cable of the charger is equipped with a socket matching the connector in the instru-

ment. Connect charger to mains and instrument. The red indicator will be switched on as long

as the charging is in progress. Thereafter it switches periodically on and off. Normally the

charging will take about 8 hours. Typically the battery achieves 90% of the capacity in 5

hours. No harm will result from leaving the charger connected for time in excess of the above

indicated duration of the charging process. However, the battery must be disconnected from

the charger when disconnecting the mains.

The battery is located in a compartment at the front of the tower. To replace the battery re-

move the screws holding the right side cover plate, seen from behind. Remove the screws

from the right hand side of the red front- and back cover plate. Remove the side cover plate.

Remove the 2 nuts holding the clamp plate. Lift out the battery of its container. The battery

can now be removed and replaced. Refit in reverse order.

Keep dust/protection window and light trap clean

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Delta LTL2000S Specifications Page 29