RetroSign GR1 & GR3 · Retroreflectometer
17
Section 4 – Maintenance
General care
The Retroreflectometer is constructed for outdoor use in fair weather conditions. The Retroreflectometer will withstand
moist weather, but caution must be taken against rain or splashes and dirt form traffic. The RetroSign Retroreflectometer
is a robust instrument, but it is an optical instrument and must be handled as such.
Avoid exposing the instrument to high mechanical shocks and vibrations.
Avoid exposing the instrument to rapidly changing temperatures.
When not in use store the instrument in the caring case in a clean and dry environment.
Front lens
The lens does not need special maintenance. If dirty carefully moist the lens with ordinary window cleaning liquid and
clean it with a soft linen cloth.
Battery
The instrument is powered by a NiMh battery, which under normal use requires no maintenance.
A battery charger is provided as a standard accessory for charging the battery from mains.
To recharge the battery first make sure that the instrument is off, then release the battery retaining spring, remove the
battery from the handle and insert it in the charger.
Please refer to the enclosed charger instructions for operation.
A new battery or one which has not been used for an extended period of time will reach full performance only after ap-
prox. 5 charging and discharging cycles.
The battery is equipped with a temperature monitor that only allows charging within a range between 0
°
C and 45
°
C
(32
°
F and 113
°
F). This ensures long battery life. When used properly, the battery can be recharged up to 1000 times.
A substantial drop in obtainable measurements on a fully charged battery indicates that the battery is worn out and must
be renewed.
The Battery and the charger are specifically designed for use in conjunction with one another. Charging should be done
only with the charger delivered with the instrument.
Do not expose the battery to heat or flames:
Danger of explosion
. Do not place the battery on a heater or expose to
direct sunlight for long periods. Temperatures in excess of 50
°
C (122
°
F) will damage the battery. Allow a warm battery to
cool before charging. When handling or storing the battery take special care to avoid possible short circuiting the battery
contacts.
Avoid repeated consecutive rapid charges of the battery. Do not recharge after using only briefly.
Note
•
The battery should be protected against impact. Do not open the battery.
•
Store the battery in a dry place.
•
Due to environmental protection do not dispose the battery with household waste.
Lamp
The lamp requires no maintenance. At the end of the lamps service life the instrument will display a lamp error message,
and the lamp must be replaced.
The lamp must be replaced only by DELTA or personal trained by DELTA.
