Hilti Pra 90 Manuel utilisateur
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*2034574* 2034574 English 1
Original operating instructions
1 Information about the documentation
1.1 About this documentation
• Read this documentation before initial operation or use. This is a prerequisite for safe, trouble-free
handling and use of the product.
• Observe the safety instructions and warnings in this documentation and on the product.
• Always keep the operating instructions with the product and make sure that the operating instructions
are with the product when it is given to other persons.
1.2 Explanation of symbols used
1.2.1 Warnings
Warnings alert persons to hazards that occur when handling or using the product. The following signal words
are used:
DANGER
DANGER !
▶Draws attention to imminent danger that will lead to serious personal injury or fatality.
WARNING
WARNING !
▶Draws attention to a potential threat of danger that can lead to serious injury or fatality.
CAUTION
CAUTION !
▶Draws attention to a potentially dangerous situation that could lead to personal injury or damage to the
equipment or other property.
1.2.2 Symbols in the documentation
The following symbols are used in this document:
Read the operating instructions before use.
Instructions for use and other useful information
Dealing with recyclable materials
Do not dispose of electric equipment and batteries as household waste
1.2.3 Symbols in the illustrations
The following symbols are used in illustrations:
These numbers refer to the corresponding illustrations found at the beginning of these operating
instructions
The numbering reflects the sequence of operations shown in the illustrations and may deviate
from the steps described in the text
Item reference numbers are used in the overview illustrations and refer to the numbers used in
the product overview section
This symbol is intended to draw special attention to certain points when handling the product.
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1.3 Product-dependent symbols
1.3.1 Symbols on the product
The following symbols are used on the product:
Only use in enclosed spaces
1.4 Product information
products are designed for professional users and only trained, authorized personnel are
permitted to operate, service and maintain the products. This personnel must be specifically informed about
the possible hazards. The product and its ancillary equipment can present hazards if used incorrectly by
untrained personnel or if used not in accordance with the intended use.
The type designation and serial number are printed on the rating plate.
▶Write down the serial number in the table below. You will be required to state the product details when
contacting Hilti Service or your local Hilti organization to inquire about the product.
Product information
Automatic tripod PRA 90
Generation 01
Serial no.
2 Safety
2.1 Safety precautions
In addition to the information relevant to safety provided in the individual sections of these operating
instructions and the information provided in the operating instructions of whichever type of rotating
laser is being used, the following instructions must also be strictly observed at all times.
General safety instructions
Do not render safety devices ineffective and do not remove information and warning notices.
Proper preparation of the working area
▶Secure the site in which you are taking measurements and take care to avoid directing the beam
towards other persons or towards yourself when setting up the appliance.
▶When performing alignment work on ladders, avoid postures to which you are unaccustomed.
Make sure you work from a safe stance and stay in balance at all times.
▶Ensure that the tool is set up on a stable, level surface (not subject to vibration).
▶Use the tool only within its specified limits.
▶Take care to ensure that no parts of the body are located under the tripod when the tripod is set
up or in operation.
▶Do not use the tripod as a hoist or lifting aid.
▶Keep children away. Keep other persons away from the working area.
▶When setting up the tripod in enclosed spaces (indoor rooms), check the suitability of the floor on
which it stands, as the tripod could gouge scratches into the floor.
Electromagnetic compatibility
▶Although the device complies with the strict requirements of the applicable directives, Hilti cannot
entirely rule out the possibility of interference to the device caused by powerful electromagnetic radiation,
possibly 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
possibility of interference with other devices (e.g. aircraft navigation equipment).
General safety measures
▶Check the condition of the device before use. If the device is found to be damaged, have it repaired at a
Hilti Service Center.
▶Always keep the PRA 90 threaded rod free from objects of any kind, including parts of the body or
dirt.
▶Do not put your fingers or other parts of the body into the tubes of the tripod legs or other points
at which injuries may be caused.
*2034574* 2034574 English 3
▶Although the appliance is designed for use on job sites under tough conditions, it should be
handled with care, in the same way as other electrical appliances.
▶Although the device is protected to prevent entry of dampness, it should be wiped dry each time
before being put away in its transport container.
▶Only use the AC adapter for connecting to the power supply.
▶Ensure that the appliance and AC adapter do not present an obstacle that could lead to a risk of
tripping or personal injury.
▶Ensure that the workplace is well lit.
▶Check extension cords at regular intervals and replace them if found to be damaged. Do not touch
the AC adapter if the extension cord or AC adapter are damaged while working. Disconnect the
supply cord plug from the power outlet. Damaged supply cords or extension cords present a risk of
electric shock.
▶Avoid body contact with earthed or grounded surfaces such as pipes, radiators, cookers, stoves
and refrigerators. There is an increased risk of electric shock if your body is grounded.
▶Do not expose the supply cord to heat, oil or sharp edges.
▶Never operate the AC adapter when it is dirty or wet. Dust (especially dust from conductive
materials) or dampness adhering to the surface of the AC adapter may, under unfavorable
conditions, lead to electric shock. Dirty or dusty tools or appliances should thus be checked by
Hilti Service at regular intervals, especially if used frequently for working on conductive materials.
▶Avoid touching the contacts.
▶Use the carry strap supplied with the tripod to make it easier to carry the PRA 90. When transporting
the PRA 90, take care not to allow the tripod to cause injury either to yourself or to other persons.
Particular care should be taken in checking the position of the points at the ends of the legs during
transportation.
▶When you are finished using the PRA 90, always make sure that the threaded column is fully wound
down before the tripod legs are folded together.
Use and care of battery-powered tools
▶Use only batteries of the type approved for use with the applicable tool. Use of other batteries or
use of the batteries for purposes for which they are not intended presents a risk of fire and explosion.
▶Do not expose batteries to high temperatures and keep them away from fire. There is a risk of
explosion.
▶Do not disassemble, squash or incinerate batteries and do not subject them to temperatures over
80 °C (176 °F). This presents a risk of fire, explosion or injury through contact with caustic substances.
▶Do not allow moisture to enter the battery. Moisture in the interior of the device may cause a short
circuit and chemical reactions resulting in burns to the skin or fire.
▶Observe the special guidelines applicable to the transport, storage and use of Li-ion batteries.
▶Avoid short circuiting the battery terminals. Check that the battery terminals and the terminals in
the power tool are free from foreign objects before inserting the battery in the tool. Short circuiting
the battery terminals presents a risk of fire, explosion and chemical burns.
▶Never continue to use or attempt to charge damaged batteries, e.g. batteries with cracks, broken
parts, bent or pushed-in / pulled-out contacts).
▶Only use the AC adapter PRA 85 or the motor vehicle power adapter PRA 86.for operating the
appliance and charging the battery. The appliance may otherwise be damaged.
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3 Description
3.1 Product overview 1
@Rotating laser
;Laser adapter 5/8"
=Tripod head
%Battery compartment
&Extendable supports
(Control panel
)Charge state indicator
+height regulation
§LED display
/On/off button
3.2 Intended use
The product described is an automatic tripod onto which a rotating laser can be fitted. The tripod can be
moved in height using the control panel or a remote control unit. Using the tripod and the rotating laser
fitted to it, a horizontal laser plane can be established which is directed onto a particular target height, meter
marks can be transmitted and horizontal heights aligned and checked.
▶Use only the Hilti PRA 84 Li-ion battery for this product.
▶For these batteries, use only the Hilti PRA 85 AC adapter.
The tripod can be operated in two different ways: by means of the control panel directly on the tripod, or with
aHilti laser receiver/remote control unit (in combination with a Hilti rotating laser for automatic alignment
and monitoring).
Compatible laser receivers/remote control units:
• PRA 30
• PRA 30G
• PRA 300
3.3 Automatic alignment
The tripod can be automatically aligned with the HiltiPR 30HVS A12, PR 30HVSG A12 or the PR 300HV2S
rotating laser. These rotating lasers are specifically matched to the PRA 90 and support three-device
communication between tripod, rotating laser and associated laser receiver/remote control unit.
Using these three components together, a laser plane can be aligned onto a precise point automatically.
Only the target height has to be indicated with the laser receiver/remote control unit and the PRA 90 moves
the laser plane of the rotating laser exactly to this height.
Automatic alignment is not possible when other rotating lasers are used.
3.4 Charge state indicator
During charging in the device, during operation
Status Meaning
4 LEDs light. Charge state 100%
3 LEDs light, 1 LED blinks. Charge state ≥ 75%
2 LEDs light, 1 LED blinks. Charge state ≥ 50%
1 LED lights, 1 LED blinks. Charge state ≥ 25%
1 LED blinks. Charge state < 25%
During charging outside the device
Status Meaning
Red LED on the battery lights. Battery is charging
Red LED on the battery does not light. Charge state 100%
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