4.2.1 Electrical
a)
Keep the batteries out of reach of children.
b)
Do not allow the batteries to overheat and do not
expose them to fire.
The batteries may explode
or release toxic substances.
c)
Do not charge the batteries.
d)
Do not solder the batteries into the tool.
e)
Do not discharge the batteries by short circuiting
as this may cause them to overheat and present
a risk of personal injury (burns).
f)
Do not attempt to open the batteries and do not
subject them to excessive mechanical stress.
4.3 Proper organization of the work area
a)
Avoid unfavorable body positions when working
on ladders or scaffolding. Make sure you work
from a safe stance and stay in balance at all
times.
b) Measurements taken through or from panes of
glass or through other objects may be inaccurate.
c)
Use the tool only within its specified limits.
d)
Use of the telescopic staff in the vicinity of over-
head high voltage cables is not permissible.
4.4 Electromagnetic compatibility
Although the tool complies with the strict require-
ments of the applicable directives, Hilti cannot en-
tirely rule out the possibility of the tool being subject
to interference caused by powerful electromagnetic
radiation, leading to incorrect operation. Check the
accuracy of the tool by taking measurements by other
means when working under such conditions or if you
are unsure. Likewise, Hilti cannot rule out the pos-
sibility of interference with other devices (e.g. aircraft
navigation equipment).
5. Before use
5.1 Inserting the batteries
CAUTION
Do not use damaged batteries.
DANGER
Do not mix old and new batteries. Do not mix
batteries of different makes or types.
NOTE
Only batteries recommended by Hilti may be used to
power the tool.
6. Operation
6.1 Switching the tool off and on
Press the on/off button.
6.2 Working with the tool
The PRA 38 laser receiver can be used at distances
(radiuses) of up to 200m (650ft). The laser beam is
indicated visually and by an audible signal.
6.2.1 Using the laser receiver as a hand-held
tool
1.
Press the on/off button.
2.
Hold the PRA 38 in the plane of the rotating laser
beam.
The laser beam is indicated by visual and audible
signals.
6.2.2 Working with the laser receiver in the
PRA 80 receiver holder
2
1.
Open the catch on the PRA 80.
e
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