PR 25

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Operating instructions en
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 PR 25 rotating laser
It is essential that the operating instructions 1. General information
are read before the tool is used the first 1.1 Safety notices and their meaning
en
time.
-CAUTION-
Always keep these operating instructions Draws attention to a potentially dangerous situation that
together with the tool. could lead to minor personal injury or damage to the
equipment or other property.
Ensure that the operating instructions are -NOTE-
with the tool when it is given to other Draws attention to instructions and other useful infor-
persons. mation.

1.2 Pictograms
Component parts

Warning signs Symbols
PR 25 rotating laser

Laser beam (plane of rotation)
 Rotating head
 Control panel General warning Read the operating
instructions before use.
 Grip
 Battery compartment
 Base plate with 5/8″ thread
LASER RADIATION - DO NOT
STARE INTO BEAM
Control panel 620-690nm/0.95mW max. 2
1/4 s

 On/off button CLASS II LASER PRODUCT

 Shock warning deactivation key Laser radiation

Rotation speed control key Do not stare into the beam.
Line function key Laser class 2 in accordance with EN 60825-1:2003
Direction keys (left/right)
Servo keys (set X/Y inclination/direction) LASER RADIATION - DO NOT STARE INTO
Auto leveling LED BEAM OR VIEW DIRECTLY WITH
OPTICAL INSTRUMENTS
 Shock warning deactivation LED 620-690nm/2.45mW max.
CLASS IIIa LASER PRODUCT
3A
 Battery LED
 X-inclination/direction LED Do not stare into the beam or look directly into the beam
 Y-inclination/direction LED with other optical instruments.
Laser class 3 in accordance with EN 60825-1:2003
PRA 25 detector

These numbers refer to the corresponding illustra-
Contents Page tions. The illustrations can be found on the fold-out cover
1. General information 1 pages. Keep these pages open when studying the oper-
2. Description 2 ating instructions.
3. Accessories 2 In these operating instructions, the PR 25 rotating laser
4. Technical data 3 is referred to as “ the tool ”.
5. Safety precautions 3
Location of identification data on the tool
6. Before use 5 The type designation and serial number can be found
7. Operation 6 on the type plate on the tool. Make a note of this data in
8. Checks/adjustment 8 your operating instructions and always refer to it when
9. Care and maintenance 9 making an enquiry to your Hilti representative or ser-
10. Disposal 9 vice department.
11. Warranty 10
Type: PR 25
12. FCC statement 10
13. EC declaration of conformity 11 Serial no.:

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 2. Description
2.1 PR 25 rotating laser 2.3 Description of functions
The PR 25 is a rotating laser featuring a visible rotating
laser beam plus a line laser beam set at 90° to the rotat- 2.3.1 Horizontal plane (automatic leveling)
en ing beam, which can be used to indicate the vertical, When switched on, the tool levels itself automatically by
horizontal or inclined planes. way of the 2 built-in servo motors for the X- and Y-direc-
tions.
2.2 Features
The tool allows a single person to level or align in any 2.3.2 Inclined plane (any desired inclination)
plane quickly and with great accuracy. Inclination can be set up in alignment with given marks
Automatic leveling (within ±5° inclination): The tool lev- by pressing the X- and Y-keys on the PRA 25 or PR 25.
els itself automatically after switching on. The laser beam
is emitted only when the specified accuracy has been 2.3.3 Automatic cut-out
achieved. During automatic leveling in one or both directions, the
LEDs indicate the tool's operating status. servo system monitors compliance with the specified
accuracy.
Speed of rotation The tool switches itself off in the following situations:
The tool features 4 speeds of rotation. These are: sta- – Leveling is not accomplished (tool set up outside
tionary spot (zero rotation), slow rotation, medium- its leveling range or the mechanism is physically
speed rotation and fast rotation. impeded).
It is possible to switch between functions such as “Rotat- – The tool is brought out of level (due to vibration or im-
ing laser” and “Line laser”. This can be done from the pact).
PR25 rotating laser or by way of the PRA 25 (combined After automatic cut-out, rotation of the laser beam stops
laser detector and remote control unit). and all LEDs blink.
Shock warning Items supplied
The built-in shock warning function becomes active one 1 PR 25 rotating laser
minute after switching on: The tool switches to warning 1 PRA 25 laser detector*
mode (all LEDs blink, laser stops rotating) when brought 1 PR 25 operating instructions
out of level as a result of vibration or an impact during 1 PRA 25 operating instructions*
operation. All LEDs blink and the laser stops rotating. 1 PR 25/PRA 25 operating instructions*
1 PRA 50/1 target plate
Automatic cut-out 1 manufacturer's certificate
If movement of the mechanism is physically impeded 3 batteries (size D cells)
or the tool is set up outside its self-leveling range, the 2 batteries (size AA cells)
laser remains switched off and all LEDs blink. 1 Hilti toolbox
The tool can be set up on a tripod with a 5/8″ thread or
stood directly on some other steady surface (free of * Depending on the version purchased, this may not be
vibration). included in the items supplied.
-NOTE-
In some versions sold, the PRA 25 is not supplied as
standard with the PR 25. In this case, the functions can
be controlled directly from the PR 25 rotating laser itself
(excluding auto alignment/monitoring, which is possi-
ble only in conjunction with the PRA 25).

2
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 3. Accessories
3.1 Accessories for the PR 25 – PRA 76 slope adaptor
Many tasks can be carried out much more efficiently – PRA 75 detector holder
when the appropriate accessories for the PR 25 are used. – PUA 80 charger and PRA 801 battery
The following accessories are available: – PA 375 and PA 377 tripod, sight rail and facade adap- en
– PRA 20 and PRA 25 detectors tors
– PRA 50 and PRA 51 target plates – PA 910, PA 911, PA 921 and PA 931/2 tripods
– PRA 52 slope calculator – PA 950/960 and PA 951/961 leveling staffs
– PRA 70 and PRA 71 wall brackets

4. Technical data for the PR 25

Range (circle diameter) 2 to 200 m [6 to 650 ft.] with the PRA 25
Range of remote control 0 to 100 m [0 to 325 ft.] with the PRA 25
Accuracy (at 24 °C/+75 °F) ±0.75 mm @ 10 m
Laser product class Class 2, visible, 635 nm, < 1 mW
Class 3, visible, 635 nm, < 2.5 mW
(IEC825-1/EN60825-1:2003; FDA 21 CFR 1040)
Speeds of rotation Zero, slow, medium, fast
(operating speed)
Self-leveling range ±5°, LED indicator
Automatic cut-out When the laser is brought out of level (unless both
axes set to inclined mode):
– Rotation stops
– All LEDs blink
Operating status indicators – Auto leveling LED
– Battery condition LED
– Shock warning LED
– X and Y inclination/direction LED
Power supply 3 size D alkaline batteries or NiMH rechargeable bat-
tery for charging with PUA 80 charger (accessory)
Battery life at 20 °C [+68 °F] Alkaline batteries: > 50 hours
NiMh batteries: > 40 hours
Operating temperature –20 °C to +50 °C [–4 °F to +122 °F]
Storage temperature –30 °C to +60 °C dry [–22 °F to +140 °F]
Electrical protection class IP 56 (as per IEC 529)
Tripod thread 5/8″ x 18
Weight Approx. 2.4 kg (5.3 lbs.) including 3 batteries
Dimensions 186 (L) x 186 (W) x 213 (H) mm
[7.3″ (L) x 7.3″ (W) x 8.4″ (H) inches]
Beam diameter 16 mm at 10 m
Right of technical changes reserved.

3
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 5. Safety precautions
5.1 Basic information concerning safety ● Ensure that the tool is set up on a steady surface (not
In addition to the information relevant to safety given in subject to vibration).
each of the sections of these operating instructions, the ● Use the tool only within its specified limits.
en following points must be strictly observed at all times. ● Check that your PR 25 is being controlled by your
PRA 25 and that it is not reacting to commands from
5.2 Intended use any other PRA 25 in use on the construction site.
The tool is designed to be used for determining, trans-
ferring or checking alignment in the horizontal plane, 5.3.1 Electromagnetic compatibility
inclined planes and right angles, e.g. Although the tool complies with the strict requirements
– Transferring datum and height marks of the relevant directives, Hilti cannot entirely rule out
– Marking out right angles for walls the following possibilities:
– Vertical alignment with a reference point ● The tool may cause interference to other equipment,
– Setting out inclines e.g. aircraft navigational equipment.
● The tool may be subject to interference caused by
Hilti offers various accessories that allow the tool to be powerful radiation, possibly leading to incorrect oper-
used with maximum efficiency. ation. Check the readings for plausibility when mea-
suring under these conditions or if you are unsure of
the results.

5.3.2 Laser classification for laser class 2 products

● The tool and its accessories may present hazards when Depending on the version purchased, the tool conforms
used incorrectly by untrained personnel or when used to laser class 2 or, respectively, class 3 based on the
not as directed. IEC825-1/EN60825-1:2003 standard and class II based
● To avoid the risk of injury, use only genuine Hilti acces- on CFR 21 § 1040 (FDA). These tools may be used with-
sories and additional equipment. out need for further protective measures. The eyelid clo-
● Tampering with or modification of the tool is not per- sure reflex protects the eyes if a person looks into the
missible. beam unintentionally for a brief moment. The eyelid clo-
● Observe the information printed in the operating instruc- sure reflex may, however, be negatively influenced by
tions concerning operation, care and maintenance. medication, alcohol or drugs. Nevertheless, as with the
● Do not render safety devices ineffective and do not sun, a person should not look directly into sources of
remove information and warning notices. bright light. Do not direct the laser beam toward per-
● Keep laser tools out of reach of children. sons.
● Have the tool repaired only at a Hilti service centre.
Failure to follow the correct procedures when open- Laser information plates based on IEC825/EN60825-
ing the tool may cause emission of laser radiation in 1:2003
excess of class 2 or, respectively, class 3.
● Take the surrounding conditions into account. Do not
use the tool where there is a risk of fire or explosion. 1/4 s

2
* (Requested by FCC §15.21): Changes or modifications
not expressly approved by the party responsible for Laser information plates for the US based on CFR 21
compliance could void the user’s authority to operate § 1040 (FDA)
the equipment.

5.3 Proper organization of the workplace LASER RADIATION - DO NOT

STARE INTO BEAM
620-690nm/0.95mW max.
CLASS II LASER PRODUCT

5.3.3 Laser classification for laser class 3 products

● Secure the area in which you are working. When set- Depending on the version purchased, the tool conforms
ting up the tool, take care to avoid directing the beam to laser class 2 or, respectively, class 3 based on the
toward yourself or other people. IEC825-1/EN60825-1:2003 standard and class II based
● Avoid unfavorable body positions when working on on CFR 21 § 1040 (FDA). These tools may be used with-
ladders. Work from a stable stance and stay in bal- out need for further protective measures.
ance at all times. Do not look into the laser beam and do not direct the
● Measurements taken through panes of glass or other laser beam toward persons.
objects may be inaccurate.

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 Laser information plate based on IEC825/EN60825- 5.4 General safety precautions
1:2003 ● Check the tool before use. If the tool is found to be
damaged, have it repaired at a Hilti service center.
● The accuracy of the tool must be checked after it has
3A been dropped or subjected to other mechanical stress.
● When the tool is brought into a warm environment
Laser information plate for the US based on CFR 21 from very cold conditions, or vice versa, allow it to
en
§ 1040 (FDA) become acclimatized before use.
● If mounting on an adaptor, ensure that the tool is
LASER RADIATION - DO NOT STARE INTO screwed on securely.
BEAM OR VIEW DIRECTLY WITH
OPTICAL INSTRUMENTS ● Keep the laser exit aperture clean to avoid measure-
620-690nm/2.45mW max.
CLASS IIIa LASER PRODUCT ment errors.
● Although the tool is designed for the tough conditions
This laser product complies with 21 CFR 1040 as applic- of jobsite use, as with other optical instruments (binoc-
able. ulars, spectacles, cameras) it should be treated with
care.
-NOTE- ● Although the tool is designed to prevent entry of damp-
● Laser class 3 tools should be operated only by trained ness, it should be wiped dry each time before being
personnel. put away in its transport container.
● The area in which the tool is in use should be marked ● Check the tool before using it for important measur-
with laser warning signs. ing work.
● The plane of the laser beam should be well above or ● Check the accuracy of the tool regularly while in use.
well below eye level.
● Precautionary measures must be taken to avoid inad- 5.4.1 Electrical
vertent reflection of the laser beam from potentially ● Do not allow the batteries to fall into children's hands.
reflective surfaces. ● Do not overheat or incinerate the batteries. They may
● Precautionary measures must be taken to ensure that explode or release toxic substances.
persons do not look directly into the beam. ● Do not attempt to recharge the batteries (non-recharge-
● The laser beam should not be projected into unsu- able, alkaline type).
pervised areas. ● Do not solder the batteries into the tool.
● When not in use, laser tools should be stored in a place ● Do not discharge the batteries by short circuiting. This
inaccessible to unauthorized persons. may cause the batteries to overheat and swell up.
● Do not attempt to open the batteries and do not sub-
ject them to excessive mechanical stress.

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 6. Before use
Batteries
– Do not use damaged batteries.
– Do not mix old and new batteries. Do not mix batter-
en ies of different types or batteries from various manu-
-NOTE- facturers.
– The tool may be powered only by the PRA 801 recharge-
able battery or by batteries manufactured in accordance 6.1 Switching on the tool
with the IEC standard. Press the on/off key.
PR 801 rechargeable battery -NOTE-
– The performance of the battery drops at low tempera- After switching on, the tool begins the automatic level-
tures. ing process (max. 40 seconds). Once fully leveled, the
– Store the battery at room temperature. tool activates the laser beam in the rotational plane and
– Never store the battery where it is exposed to direct in the plane perpendicular to this. The laser beam begins
sunlight, on a radiator or heater, or behind glass (win- to rotate at medium speed.
dows, motor vehicle windscreens, etc).

6.2 LED indicators

Auto leveling LED
The LED blinks rapidly. The tool is leveling itself automatically.
The LED lights constantly. The tool has leveled itself/is operating normally.
Shock warning LED
All LEDs blink. The tool has been bumped or brought out of level tem-
porarily.
The shock warning LED lights red. The shock warning LED lights red after deactivation of
the shock warning.
Battery voltage LED
The LED lights. The batteries are almost exhausted.
Inclination LED
The X and Y LEDs do not light. Operation in the horizontal plane.
The X LED does not light and the Y LED lights red. The Y-direction has been aligned manually or by way
of auto alignment. X-direction is still under automatic
control.
The X LED lights red and the Y LED does not light. The X-direction has been aligned manually or by way
of auto alignment. Y axis is still under automatic con-
trol.
The X LED lights red and the Y LED lights red. The X- and Y-directions have been aligned manually or
by way of auto alignment. The shock warning system
is deactivated.

6.3 Inserting new batteries  3. Close the battery compartment by turning the lock-
1. Open the battery compartment by turning the lock- ing button.
ing button.
2. Insert the batteries in the battery compartment. Take
care to ensure correct polarity.

6
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 7. Operation
7.2.4 Working in the vertical plane
– Stand the tool on a level surface in a suitable position
for the application.*
– Press the on/off button. en
7.1 Switching the tool on -NOTE-
Press the on/off key. *In order to ensure that the specified accuracy is main-
tained, the tool should be stood on an approximately
7.2 Selecting the speed of rotation level surface.
The speed of rotation can be adjusted by pressing the
rotation speed control key (PR 25 or PRA 25). After -NOTE-
switching on, the PR 25 is set to rotate at medium speed, The X LED does not light (the X-direction is brought into
as standard. vertical alignment automatically and monitored).
The Y LED lights red (the Y-direction can be aligned man-
– Press the key once to set rotation to medium speed. ually by way of the servo keys, the laser plane remains
– Press the key again to set rotation to high speed. perpendicular).
– Press the key once more to return to medium speed.
– Press the key yet again to set rotation to low speed. 7.2.5 Automatic alignment
– A further press of the key stops rotation. A basic prerequisite for auto alignment is that the PR 25
– The next press of the key sets rotation to low speed. is set up accurately. The PR 25 must be set up so that
– This procedure repeats itself. the correct axis (X or Y) is positioned in the direction in
which alignment is to be performed. This can only be
7.2.1 Selecting the line laser function  done in conjunction with the PRA 25.
After pressing the line function key, the PR 25 projects
a laser line. The line can be lengthened or shortened by Procedure:
pressing the key again. – Position the PR 25 at the reference point and with the
– Press the key once to project a short line. correct axis in the direction in which alignment is to
– Press the key again to project a medium-length line. be performed (the operating range for auto alignment
– Press the key once more to project a long line. is a radius of 5-50 m).
– Press the key yet again to project an extra-long line. – Position the PRA 25 laser detector at the desired point.
– A further press of the key switches the tool back to the – Check that no obstacles prevent communication between
long line. the PR 25 and the PRA 25.
– The next press of the key switches the tool back to the – Activate the auto alignment function by pressing the
medium-length line. X or Y key three times within one second. It is impor-
– This procedure repeats itself. tant that the axes correspond correctly, i.e. when X (Y)
is to be aligned with the reference point, auto align-
7.2.2 Moving the laser line and spot ment of the X (Y) axis must be enabled by way of the
The laser line or laser spot can be moved to the left or PRA 25.
right by pressing the direction keys (PR 25 or PRA 25). – As long as the PR 25 is not in line laser mode, it then
Holding down the direction keys increases the speed of switches automatically to medium rotation speed and
movement and the laser line or spot then move contin- begins the search process. The auto align function is
uously. indicated in the display by the axis currently being
aligned and by blinking arrows. An audible signal is
7.2.3 Working in the horizontal plane emitted continuously during the search process.
– Mount the tool suitably, depending on the application, – The direction of the search process can be changed
e.g. on a tripod. by pressing the direction arrows.
– Press the on/off key. – The beam moves to the zero point (reference plane)
as soon as the laser beam strikes the target area on
-NOTE- the PRA 25 detector.
The laser beam switches on and begins to rotate as soon – After reaching this point (finding the reference plane),a
as the tool has leveled itself. signal sounds briefly indicating that the process is
complete. Only the axis that has been aligned is then
shown in the display.

7
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 If the process cannot be completed within a certain period – The laser beam can be moved to the desired position
of time, an error is indicated in the display. by pressing the direction keys. Holding down the direc-
tion keys increases the speed of movement and the
-NOTE- If an error is displayed
laser line or spot then move continuously.
Please check that the PRA 25 is positioned within the
– The manual alignment function is indicated in the dis-
inclination range (+/– 5°) and that no obstacles are
play by the axis currently being aligned and by sta-
en located between the rotating laser tool and the laser
tionary (constantly lit) arrows. An audible signal is also
detector.
emitted continuously during the search process.
– The system switches to normal operation when no key
7.2.6 Manual alignment with the PR 25 
is pressed within 5 seconds. Only the axis that has
A basic prerequisite for manual alignment is that the been aligned is then indicated in the display.
PR 25 is set up accurately. The PR 25 must be set up so
that the correct axis (X or Y) is positioned in the direc- 7.2.8 Monitoring
tion in which alignment is to be performed.
The monitoring function checks to ensure that no dis-
Procedure: placement of the aligned plane has occurred (e.g. due
to vibration). If displacement has occurred, the laser
– Position the PR 25 at the reference point and with the
plane is realigned to the zero point (as long as it is still
correct axis in the direction in which alignment is to
within the detector target area). An additional laser detec-
be performed (the operating range for manual align-
tor is required for working with the monitoring function.
ment is a radius of 5–50 m).
A PRA 20 or PRA 25 may be used to detect the laser
Setting the X-direction manually beam.
– Press one of the X-servo keys twice within 2 seconds. As monitoring begins by way of the auto alignment
– The X-servo keys can then be used to perform man- function, the PR 25 must be set up accurately. The
ual alignment. PR 25 must be set up so that the correct axis (X or Y)
is positioned in the direction in which alignment is to be
-NOTE-
performed.
The X LED lights red.
Procedure:
Setting the Y-direction manually
– Press one of the Y-servo keys twice within 2 seconds. – Position the PR 25 at the reference point and with the
– The Y-servo keys can then be used to perform man- correct axis in the direction in which alignment is to
ual alignment. be performed (the operating range for auto alignment
is a radius of 5–50 m).
-NOTE-
– Position the PRA 25 laser detector at the desired point.
The Y LED lights red.
– Check that no obstacles prevent communication between
the PR 25 and the PRA 25.
7.2.7 Manual alignment using the PRA 25
– Activation of this function requires the PRA 25 to be
A basic prerequisite for manual alignment is that the switched off. While pressing and holding the X or Y
PR 25 is set up accurately. The PR 25 must be set up so key (the key for the axis you wish to align), switch on
that the correct axis (X or Y) is positioned in the direc- the laser detector by pressing the on/off key.
tion in which alignment is to be performed. – The system is then in monitoring mode. The moni-
Procedure: toring function is indicated in the display – the LEDs
for the axis to be aligned and the arrows blink alter-
– Position the PR 25 at the reference point and with the nately.
correct axis in the direction in which alignment is to – The auto alignment process then begins as previously
be performed (the operating range for manual align- described.
ment is a radius of 5–50 m). – The auto alignment process stops as soon as the zero
– Check that no obstacles prevent communication point has been found. In contrast to full auto align-
between the PR 25 and the PRA 25. ment, no audible signal is emitted at the end of the
– Activate the manual alignment function by pressing process.
the X or Y key twice within 1 second. It is important – A check is carried out at regular intervals to ensure
that the axes correspond correctly, i.e. when X (Y) is that laser plane has not been displaced. If it is found
to be aligned with the reference point, auto alignment to have been displaced, the laser plane is again brought
of the X (Y) axis must be enabled by way of the into alignment with the zero point (as long as the laser
PRA 25. beam is still within the detector target area and line of
sight between the rotating laser and the detector has
not been interrupted for a long period). In the event of
prolonged interruption of the line of sight between the
two devices, an error is indicated after 30 seconds.

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 -NOTE- If an error is displayed Cancelling pairing:
Please check that the PRA 25 is positioned within the
– Pairing can be cancelled by pressing and holding down
inclination range (+/– 5°) and that no obstacles are
the on/off keys for more than 3 seconds. Cancellation
located between the rotating laser tool and the laser
of pairing can only be successful when the on/off keys
detector.
on the PR 25 and PRA 25 are not pressed simultane-
After successfully setting to the zero point, take care to
ously. Successful cancellation of pairing is confirmed en
ensure that the line of sight between the two devices is
by the PRA 25 by the emission of an audible signal
not interrupted.
and by the symbol “!” displayed. The PR 25 confirms
cancellation of pairing by causing all LEDs to blink.
7.2.9 Pairing
It is possible to configure the PR 25 and the PRA 25 as 7.2.10 Working with the target plate
a pair. When the two devices are paired, the rotating laser
The target plate improves visibility of the laser beam.
and the detector are assigned to each other. The rotat-
The target plate for the PR 25 is particularly useful in
ing laser then receives commands only from its “own”
bright conditions or wherever better visibility of the laser
detector/remote control unit. The devices can be paired
beam is required.
by pressing and holding down the on/off keys on both
devices simultaneously.
7.2.11 Working with the laser detector
Please refer to the PRA 25 operating instructions for
information about the laser detector.

7.2.12 Continuing work in manual mode after a

-NOTE- restart
The PR 25 and PRA 25 are not paired when supplied. In order to continue working in manual mode after a
Each unpaired rotating laser receives commands from restart, it is necessary to press one of the “inclination/
any unpaired detector/remote control. direction” keys on the PR 25 within 3 seconds.
Pairing procedure:
7.2.13 Returning to standard mode
– The devices can be paired by pressing and holding
To return to standard mode, switch the tool off and then
down the on/off keys on the PR 25 and PRA 25 simul-
restart it.
taneously, as previously described, for more than 3
seconds. Successful pairing is confirmed by an audi-
ble signal emitted by the PRA 25 and by the LEDs on
the PR 25 blinking twice.

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 8. Hilti calibration service
We recommend that the tool is checked by the Hilti cal- 8.1 Accuracy
ibration service at regular intervals in order to verify its The accuracy of the tool in the X- or Y-directions can be
reliability in accordance with standards and legal require- checked as described below.
en ments.
Use can be made of the Hilti calibration service at any 8.1.1 Checking procedure 
time, but checking at least once a year is recommended. 1. Set up the tool in the horizontal plane at a distance of
The calibration service provides confirmation that the about 20 m from a wall (can also be carried out with
tool is in conformance, on the day it is tested, with the the tool set up on a tripod).
specifications given in the operating instructions. 2. Make a mark on the wall with the aid of the laser detec-
The tool will be re-adjusted if deviations from the man- tor (select medium speed of rotation).
ufacturer's specification are found. After checking and 3. Pivot the tool through 180° about its own axis (check
adjustment, a calibration sticker applied to the tool and the same laser axis).
a calibration certificate provide written verification that 4. With the aid of the laser detector, make a second mark
the tool operates in accordance with the manufacturer's on the wall.
specification.
Calibration certificates are always required by compa- If the check has been carried out carefully, the distance
nies certified according to ISO 900x. between the marks A and B should be less than 6 mm
Your local Hilti Center or representative will be pleased (at 20 m from the wall).
to provide further information. ⇒ In the event of a deviation in excess of this, please
return the tool to a Hilti Service Center.

9. Care and maintenance

9.1 Cleaning and drying 9.2 Storage
● Blow dust off the lenses. Remove the tool from its case if it has become wet. Clean
● Do not touch the glass with your fingers. and dry the tool, its carrying case and accessories
● Use only a clean, soft cloth for cleaning. If necessary, (at max. temperature of 40 °C/108 °F). Re-pack the equip-
slightly moisten the cloth with pure alcohol or a little ment only when it is completely dry.
water. Check the accuracy of the equipment before it is used
after a long period of storage or transportation.
-NOTE-
Remove the batteries if the tool is to be stored for a long
● Do not use any other liquids as these may damage
period.
the plastic parts.
● Observe the temperature limits when storing your
9.3 Transportation
equipment. This is particularly important in winter or
summer, especially if the equipment is kept inside a Use either the original Hilti cardboard box or packaging
vehicle (storage temperatures: –30 °C to +60 °C/ of equivalent quality for transporting or shipping your
–22 °F to +140 °F). equipment.
-CAUTION-
Always remove the batteries before shipping the tool.

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 10. Disposal
-CAUTION-
Improper disposal of the equipment may have serious consequences:
● The burning of plastic components generates toxic fumes which may present a health hazard.
● Batteries may explode if damaged or exposed to very high temperatures and thus cause poisoning, burns, acid en
burns or environmental pollution.
● Careless disposal may permit unauthorized and improper use of the equipment, possibly leading to serious
personal injury, injury to third parties and pollution of the environment.

Most of the materials from which Hilti tools or appliances are manufactured can be recycled. The materials must
be properly separated before they can be recycled. In many countries, Hilti has already made arrangements for
taking back old tools and appliances for recycling. Ask Hilti Customer Service or your Hilti representative for fur-
ther information.
Should you wish to return the tool or appliance yourself to a disposal facility for recycling, proceed as follows:
Dismantle the equipment as far as is possible without need for special tools.

Separate the individual parts as follows:

Part/assembly Main material Recycling
Housing, toolbox Plastic Plastics recycling
Control panel, display Various Electronics scrap
Servo motor Metal Scrap metal
Electronics Various Electronics scrap
Batteries Alkaline manganese *
Screws, small parts Steel Scrap metal

* Dispose of batteries in accordance with national regulations.

Please help to protect our environment.

11. Warranty
Hilti warrants that the product supplied is free of defects Additional claims are excluded, unless stringent national
in material and workmanship. This warranty is valid as rules prohibit such exclusion. In particular, Hilti is not
long as the product is operated and handled correctly, obligated for direct, indirect, incidental or consequential
cleaned and serviced properly and in accordance with damages, losses or expenses in connection with, or
the Hilti operating instructions, all warranty claims are by reason of, the use of, or inability to use the product
made within 12 months from the date of the sale (invoice for any purpose. Implied warranties of merchantabil-
date), and the technical system is maintained. This means ity or fitness for a particular purpose are specifically
that only genuine Hilti consumables, components and excluded.
spare parts may be used with the product.
Send the product and/or related parts immediately upon
This warranty provides the free-of-charge repair or replace- discovery of the defect to the applicable Hilti marketing
ment of defective parts only. Parts requiring repair or organization for repair or replacement.
replacement as a result of normal wear and tear are not
covered by this warranty. This constitutes Hilti's entire obligation with regard to
warranty and supersedes all prior or contemporaneous
comments and oral or written agreements concerning
warranties.

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 12. FCC statement (applicable in US) / IC statement (applicable in Canada)
-CAUTION- This device complies with Part 15 of the FCC Rules and
This equipment has been tested and found to comply RSS-210 of IC. Operation is subject to the following two
with the limits for a class B digital device, pursuant to conditions:
en part 15 of the FCC rules. These limits are designed to
provide reasonable protection against harmful interfer- (1) this device may not cause harmful interference, and
ence in a residential installation. This equipment gener- (2) this device must accept any interference received,
ates, uses, and can radiate radio frequency energy and, including interference that may cause undesired
if not installed and used in accordance with the instruc- operation.
tions, may cause harmful interference to radio com-
munications. Information plates on the product:
However, there is no guarantee that interference will not
occur in a particular installation.
If this equipment does cause harmful interference to
PR 25
Made in Germany
radio or television reception, which can be determined Hilti= registered trademark of the Hilti Corporation, Schaan, Liechtenstein
by turning the equipment on and off, the user is encour- 1/4 s

aged to try to correct the interference by one or more of LASER RADIATION - DO NOT
2
the following measures: STARE INTO BEAM This Laser Product

319699
EN 60825-1:2003
● Re-orient or re-locate the receiving antenna. 620-690nm/0.95mW max. complies with 21CFR
CLASS II LASER PRODUCT 1040 as applicable
● Increase the distance between the equipment and Power: 4,5V=nom./150 mA

receiver.
● Connect the equipment to an outlet on a circuit dif-
ferent from that to which the receiver is connected. PR 25 IF
● Consult the dealer or an experienced TV/radio tech- Made in Germany
nician for assistance. Hilti= registered trademark of the Hilti Corporation, Schaan, Liechtenstein

Changes or modifications not expressly approved by

Hilti could restrict the user's right to operate the equip- LASER RADIATION - DO NOT STARE INTO 3A
BEAM OR VIEW DIRECTLY WITH
ment. OPTICAL INSTRUMENTS
This Laser Product

319700
EN 60825-1:2003
620-690nm/2.45mW max. complies with 21CFR
1040 as applicable
CLASS IIIa LASER PRODUCT Power: 4,5V=nom./150 mA

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 13. EC conformity

Designation: Rotating laser

Type: PR 25/PR 25 IF
Year of design: 2004 en
In conformance with CE

We declare, on our own responsibility, that this product

complies with the following directives and standards:
EN 300 440-2, EN 301 489-3 V1.4.1,
EN 60950-1:2001/IEC 60950-1:2001,
EN 55022 + A1 + A2:2003

Hilti Corporation

Matthias Gillner Dr. Heinz-Joachim Schneider

Head BU Measuring Systems Executive Vice President
01 / 2005 BA Electric Tools & Accessories
01 / 2005

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 Hilti Corporation
FL-9494 Schaan
Tel.: +423 / 234 21 11
Fax: +423 / 234 29 65
www.hilti.com

*000000*
000000 / A

Hilti = registered trademark of Hilti Corp., Schaan W 3049 1004 10-Pos. 1 1 Printed in Liechtenstein © 2004
Right of technical and programme changes reserved S. E. & O.

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