Operation; Hilti Calibration Service; Care And Maintenance; Cleaning And Drying - Hilti PRA 20 Mode D'emploi

5. Getting started / 6. Operation / 7. Hilti calibration service / 8. Care and maintenance
Batteries
- Do not use damaged batteries.
- Do not mix old and new batteries.
Do not mix batteries of different
types or batteries from various
manufacturers.

6. Operation

6.1 Switching the tool on
Press the ON / OFF key.
6.2 Working with the laser detector
The PRA 20 laser detector can be used wit-
hin an area up to 400m (1300 ft) in
diameter. The laser beam is indicated by
visible and audible signals.
1. Mount the PRA 20 detector securely on
the telescopic staff or leveling staff and
switch it on by pressing the on / off
key.
2. Set the desired sensitivity by pressing
the laser plane detection tolerance
selection key.
3. Optional settings:
Use the audible signal setting key to
select the desired volume level.
Switching on sets the detector to the
standard signal volume. Adjust the
signal volume by pressing this key
repeatedly until the desired volume is
set (normal / loud / off).
4. Hold the PRA 20 perpendicular to the
laser beam plane of rotation.
The laser beam is indicated by visible
and audible signals.
10
Printed: 07.07.2013 | Doc-Nr: PUB / 5070244 / 000 / 00

7. Hilti calibration service

We recommend that the rotating laser and
detector are checked by the Hilti calibration
service at regular intervals in order to ver-
ify its reliability in accordance with stan-
dards and legal requirements.

8. Care and maintenance

8.1 Cleaning and drying

Use only a clean, soft cloth for cleaning. If
necessary, slightly moisten the cloths with
pure alcohol or a little water.
- NOTE -
– Do not use any other liquids as these
may damage the plastic parts.
– Observe the temperature limits when sto-
ring your equipment. This is particularly
important in winter or summer, especially
if the equipment is kept inside a vehicle
(storage temperatures: -30°C to +60°C / -
22°F to +140°F).
8.2 Storage
Remove the tool from its case if it has
become wet. Clean and dry the tool, its car-
rying case and accessories (at max. tem-
perature of 40°C / 108° F). Re-pack the
equipment only when it is completely dry.
Check the accuracy of the equipment
before it is used after a long period of
storage or transportation.
8.3 Transportation
Use either the original Hilti cardboard box
or packaging of equivalent quality for
transporting or shipping your equipment.
- NOTE -
Always remove the batteries before ship-
ping the tool.