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1. Remove the battery from the appliance and plug
in the connector of the mains adapter or the car
battery connector.
2. The red LED on the battery lights up while charging
is in progress.
6.2.3 Charging the battery while the appliance is in
operation
9
CAUTION
Avoid ingress of moisture.
Moisture may cause a short
circuit resulting in a risk of burning injury or fire.
1. Turn the cover so that the charging socket on the
battery can be seen.
2. Plug the connection of the mains adapter into the
battery.
3. The appliance continues to operate while charging
is in progress.
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
10
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 direction
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
11 12 13
NOTE
When first delivered, PRA 92 tripod and remote control
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 alternately 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 monitor-
ing), 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
13 11
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 both ap-
pliances which cannot be disturbed by the influence of
other appliances.
The PR 35 rotating laser should also have been paired
separately with the PRA 35. In this way, 3-appliance
en
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Summary of Contents for Pra 90
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