User's Manual

4. During charging, the charging status is indicated
by the LEDs on the appliance.
6.3 Battery use and care
Store the battery in a cool, dry place. Never store
the battery where it is exposed to direct sunlight or
sources of heat, e.g. on heaters / radiators or behind a
motor vehicle windscreen.Batteries that have reached
the end of their life must be disposed of safely and
correctly to avoid environmental pollution.
6.4 Fitting the battery 
CAUTION
Before inserting the battery in the tool or appliance,
check that the terminals of the battery and the tool
or appliance are free from foreign objects.
1. Slide the battery into the appliance.
2. Turn the catch two notches in a clockwise direc-
tion until the “locked” symbol appears.
6.5 Removing the battery
1. Turn the catch two notches in an counter-
clockwise direction until the “unlocked” symbol
appears
2. Remove the battery from the appliance.
6.6 Pairing   
NOTE
When first delivered, PRA 92 tripod and remote con-
trol unit or PRA 35 remote control unit/laser receiver
are not paired. They are not ready for operation until
they have been paired.
In order to use the PR 90 rotating laser with the
PRA 92/PRA 35, these two must be mutually adjusted
and paired. Pairing appliances produces the result
that the appliances are then clearly allocated to each
other. The tripod then only receives signals from the
PRA 35 paired with the PRA 92. The pairing enables
appliances to work close to other rotating lasers
without the risk that their settings will be altered by
these other lasers.
Press the On/Off buttons on the remote control unit
and the tripod simultaneously and keep them pressed
for at least 3 seconds.
Successful pairing is indicated for the PRA 92 by the
LEDs of both appliances lighting up at the same time.
For the PRA 35, successful pairing is indicated by the
sound of an acoustic signal from the PRA 35 and by
the LEDs lighting up on the PRA 90. At the same time,
a chain icon appears briefly on the PRA 35 display.
Both appliances then switch off automatically.
The tripod cannot be paired with the PRA 35 and
PRA 92 at the same time. If the tripod is used altern-
ately with the PRA 35 and PRA 92, the appliances
must be paired together again each time.
7. Operation
7.1 Fitting rotating laser to tripod
CAUTION
Only fit appliances with a maximum weight of up to
5 kg.
Screw the rotating laser onto the tripod
7.2 Operating the tripod 1
The tripod can be operated in 3 different ways: with
PRA 35 remote control/laser receiver in combination
with PR 35 rotating laser for automatic alignment
and monitoring), without remote control and with the
PRA 92 remote control.
Hilti recommends the use of the tripod with the PR 35
rotating laser, however the tripod can also be used
with other rotating lasers.
For information on operating the rotating laser, refer
to the operating instructions of the appliances.
The working height of the automatic tripod depends
on the type of rotating laser used. If the PR 35 is
used, the minimum height of the rotating laser beam
is 0.97 m and the maximum height 1.95 m (when the
tripod legs are fully extended).
7.3 Working with the PRA 90 and the PRA 35/
PR 35
7.3.1 Initial pairing  
When used for the first time, the PRA 35 remote con-
trol unit/laser receiver must be paired with the tripod
in order to enable secure communication between
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