PR 4-22 (01)

About these operating instructions

• Warning! Read and understand all accompanying documentation, including but not limited to instructions, safety warnings, illustrations, and specifications provided with this product. Familiarize yourself with all the instructions, safety warnings, illustrations, specifications, components, and functions of the product before use. Failure to do so may result in electric shock, fire, and/or serious injury. Save all warnings and instructions for future reference.
  
• 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 accompanying documentation corresponds to the current state of the art at the time of printing. Please always check for the latest version on the product’s page on Hilti’s website. To do this, follow the link or scan the QR code in this documentation, marked with the symbol .
  
• Ensure that these operating instructions are with the product when it is given to other persons.
  

Explanation of symbols

Warnings

Symbols in the operating instructions

	Comply with the operating instructions
	Instructions for use and other useful information
	Dealing with recyclable materials
	Do not dispose of electric equipment and batteries as household waste
	Hilti Li‑ion battery
	Hilti charger

Symbols in illustrations

	These numbers refer to the illustrations at the beginning of these operating instructions.
	The numbers in illustrations refer to important work steps or to components important for the work steps. In the text, the corresponding numbers draw attention to these work steps or components, e.g. (3) .
	Item reference numbers are used in the overview illustration and refer to the numbers used in the key in the product overview section.
	This symbol is intended to draw your special attention to certain points for handling the product.

Product-dependent symbols

General symbols

	The product supports near-field communication (NFC) technology compatible with iOS and Android platforms.
	Li-ion battery
	Never use the battery as a striking tool.
	Do not drop the battery. Never use a battery that has suffered an impact or is damaged in any other way.
	Hilti Li-ion battery type series used. Observe the information given in the section headed Intended use .
	If applied on the product, the product has been certified by this certification body for the US and Canadian markets according to the applicable standards.

On the product

LASER RADIATION! DO NOT LOOK INTO THE LASER BEAM! The product corresponds to laser class 2, based on the standard IEC60825‑1/EN60825‑1:2014, and corresponds to CFR 21 § 1040 (Laser Notice 56). This product is a consumer laser product and satisfies the requirements of EN 50689:2021.

General safety instructions, measuring tools

• Keep your workplace clean and well lit. Cluttered or poorly lit workplaces invite accidents.
  
• Do not operate the product in explosive atmospheres, such as in the presence of flammable liquids, gases or dust.
  
• Keep children and other persons clear when the product is in use.
  
• Use the product only within its specified limits.
  
• Comply with your national accident prevention regulations.
  

• Do not expose the product to rain or moisture. Penetrating moisture can cause short circuits, electrical shock, burns or explosions.
  
• Although the product is protected against the entry of moisture, it should be wiped dry before being put away in its transport container.
  

• Stay alert, watch what you are doing and use common sense when operating a measuring tool. Do not use a measuring tool while you are tired or under the influence of drugs, alcohol or medication. A moment of inattention while operating the measuring tool can result in serious personal injury.
  
• Avoid unusual body positions. Keep proper footing and balance at all times.
  
• Wear personal protective equipment. Wearing personal protective equipment reduces the risk of injury.
  
• Do not render safety devices ineffective and do not remove information and warning notices.
  
• Avoid accidental starting. Make sure that the measuring tool is switched off before connecting it to the battery and before picking it up or carrying it.
  
• Use the product and accessories in accordance with these instructions and in the way specified for this special type of tool. Take the working conditions and the work to be performed into account. Use of products for applications different from those intended could result in hazardous situations.
  
• Do not lull yourself into a false sense of security and do not flout the safety rules for measuring tools, even if you are familiar with the measuring tool after using it many times. Carelessness can result in serious injury within a fraction of a second.
  
• Do not use the measuring tool in the vicinity of medical devices.
  

• Use the product and accessories only when they are in perfect working order.
  
• Store measuring tools out of reach of children when not in use. Do not allow persons who are not familiar with the product or these instructions to operate it. Measuring tools are dangerous in the hands of inexperienced persons.
  
• Measuring tools need care and attention. Check that moving parts operate satisfactorily and do not jam, and make sure that no parts are broken or damaged in such a way that the measuring tool might no longer function correctly. Have damaged parts repaired before using the measuring tool. Many accidents are caused by poorly maintained measuring tools.
  
• Do not under any circumstances modify or tamper with the product. Changes or modifications not expressly approved by Hilti may restrict the user’s authorization to operate the product.
  
• Check the accuracy of the measuring tool before using it for important measurements, and if it has been dropped or subjected to other mechanical stresses.
  
• Due to the measuring principle employed, the results of measurements can be negatively affected by certain ambient conditions. These include, for example, the proximity of devices that produce strong magnetic or electro-magnetic fields, vibrations and temperature changes.
  
• Rapidly changing measuring conditions can falsify the results.
  
• When the product is brought into a warm environment from very cold conditions, or vice-versa, allow it to become acclimatized before use. Big differences in temperature can lead to incorrect operation and incorrect results.
  
• When adapters or accessories are used, make sure they are mounted securely.
  
• The measuring tool is designed for the tough conditions of jobsite use, but as with other optical and electrical products (e.g. binoculars, spectacles, cameras) it must be handled with care.
  
• The specified operating and storage temperatures must be observed.
  

Additional safety instructions for laser measuring tools

• Laser radiation in excess of Class 2 can be emitted if the product is opened without correct procedure being followed. Have the product repaired only by Hilti Service.
  
• Secure the area in which you will be taking measurements. While setting up the product, make sure that you do not direct the laser beam toward yourself or others. Laser beams should be projected well above or well below eye height.
  
• Keep the laser exit window clean in order to avoid measurement errors.
  
• Check the accuracy of the product before use and several times during use.
  
• Readings taken in the vicinity of reflective objects or surfaces, through panes of glass or similar materials can falsify the result of measurement.
  
• Mount the product on a suitable holder or bracket or on a tripod, or set it on a smooth, level surface.
  
• Do not work with surveyor's staffs in the vicinity of high-voltage electricity cables.
  
• Make sure that no other laser measuring tool that can influence your measurements is in use in the vicinity.
  
• Do not permit the laser beam to project beyond the controlled area.
  

Additional safety instructions

• Use the product and accessories only when they are in perfect working order.
  
• Never tamper with or modify the product or accessories in any way.
  
• Risk of injury by falling tools and/or accessories. Before starting work, check that the battery and installed accessories are secure.
  

Electromagnetic compatibility

• The tool may cause interference to other devices (e.g. aircraft navigation equipment).
  
• The tool may be negatively affected by powerful electromagnetic radiation, possibly leading to incorrect operation.
  

Careful handling and use of batteries

• Comply with the following safety instructions for the safe handling and use of Li-ion batteries. Failure to comply can lead to skin irritation, severe corrosive injury, chemical burns, fire and/or explosion.
  
• Use only batteries that are in perfect working order.
  
• Treat batteries with care in order to avoid damage and prevent leakage of fluids that are extremely harmful to health!
  
• Do not under any circumstances modify or tamper with batteries!
  
• Do not disassemble, crush or incinerate batteries and do not subject them to temperatures over 80 °C (176 °F).
  
• Never use or charge a battery that has suffered an impact or been damaged in any other way. Check your batteries regularly for signs of damage.
  
• Never use recycled or repaired batteries.
  
• Never use the battery or a battery-operated power tool as a striking tool.
  
• Never expose batteries to the direct rays of the sun, elevated temperature, sparking, or open flame. This can lead to explosions.
  
• Do not touch the battery poles with your fingers, tools, jewelry, or other electrically conductive objects. This can damage the battery and also cause material damage and personal injury.
  
• Keep batteries away from rain, moisture and liquids. Penetrating moisture can cause short circuits, electric shock, burns, fire and explosions.
  
• Use only chargers and power tools approved for the specific battery type. Read and follow the relevant operating instructions.
  
• Do not use or store the battery in explosive environments.
  
• If the battery is too hot to touch, it may be defective. Put the battery in a place where it is clearly visible and where there is no risk of fire, at an adequate distance from flammable materials. Allow the battery to cool down. If it is still too hot to touch after an hour, the battery is faulty. Consult Hilti Service or read the document entitled "Instructions on safety and use for Hilti Li-ion batteries".
  
  Observe the special guidelines applicable to the transport, storage and use of lithium-ion batteries.
  Read the instructions on safety and use of Hilti Li-ion batteries that you can access by scanning the QR code at the end of these operating instructions.
  

Overview

1. Laser beam (plane of rotation)
   
2. Reference beam
   
3. Targeting aid (front and rear sights), X axis
   
4. Laser window
   
5. Grip
   
6. Battery interface
   
7. On/off button
   
8. Operating status indicator (LED)
   
9. Battery release button
   
10. Battery status indicator
    
11. Position of rating plate
    
12. Base plate with 5/8" thread
    

Intended use

• For this product, use only the Hilti Nuron Li‑ion batteries of the B 22 series stated in this table.
  

• For these batteries, use only Hilti chargers of the type series stated in this table.
  

Items supplied

Functions of the on/off button

• With the product switched off, pressing the button and holding it down for ≥10 seconds switches the rotating laser on with shock warning deactivated.
  

Laser receiver

Automatic switch-off

• Is sloping too steeply off the horizontal.
  

• Has an internal mechanical problem.
  

• Has been knocked off level by an impact or vibration.
  

Shock warning function

• The operating status indicator slow-flashes orange.
  

• The rotary head stops and the laser beam switches off.
  

Operating status indicator

Status indicators of the Li‑ion battery

Indicators for state of charge and fault messages

Indicators showing the battery's state of health

Product information

Battery

Charging the battery

1. Before charging the battery, read the operating instructions for the charger.
   
2. Make sure that the contacts on the battery and the contacts on the charger are clean and dry.
   
3. Use an approved charger to charge the battery.
   

Inserting the battery

1. Charge the battery fully before using it for the first time.
   
2. Push the battery into the product until it engages with an audible click.
   
3. Check that the battery is seated securely.
   

Removing the battery

1. Press the battery release button.
   
2. Remove the battery from the product.
   

Fall arrest

• Use the loop to secure the tool tether to the product as shown in the illustration. Check that it holds securely.
  
• Secure the carabiner to a load-bearing structure. Check that the carabiner holds securely.
  
  Comply with the operating instructions of the Hilti tool tether.
  

Handling the rotating laser and battery correctly

1. Work in horizontal mode / slope mode.
   
2. Laying down or transporting in an inclined position.
   
   • For transport and when it is not in use, always position the rotating laser so that the battery compartment and the battery do not face upward and no moisture can penetrate.
     

Switching the rotating laser on/off and working in the horizontal plane

1. Set the rotating laser on a level, sturdy, vibration-free and shock-free flat or mount it on a suitable holder.
   
   • A wall bracket or tripod may be used as mounting devices. The angle of inclination of the surface on which it stands should not exceed ± 5°.
     
2. Press the button.
   
   • The rotating laser is leveling itself. The operating status indicator slow-flashes green.
     
   • The laser beam switches on and starts rotating as soon as the tool has leveled itself. The operating status indicator initially quick-flashes green 5 times and then shows steady green.
     
3. Press the again to switch off the rotating laser.
   

Deactivating the shock warning function

1. With the product switched off, press the on/off button and hold it down for ≥10 seconds.
   
   • The rotating laser is switched on with shock warning deactivated.
     
   • The operating status indicator flashes or shows orange.
     
2. To activate shock warning, switch the rotating laser off and then short-press the on/off button to switch on again.
   

Using the laser receiver to detect the laser beam

1. Press the button on the laser receiver to switch the laser receiver on.
   
2. Hold the laser receiver with the receiving window directly in the plane of the laser beam.
   
   • Reception of the laser beam is indicated by visual and acoustic signals.
     
   • The laser receiver shows the distance of the laser plane from the marking notch.
     
   • Depending on the situation, move the laser receiver or the rotating laser up or down until the rotation plane is aligned with the marking notch and the laser receiver shows a value of "0".
     
3. While alignment is in progress hold the laser receiver steady or secure it in place. Make sure that there is a clear line of sight between laser receiver and rotating laser.
   

Checking accuracy

• The height of the fall did not exceed the height given in the technical data.
  
• The tool operated faultlessly before the fall.
  
• The tool suffered no obvious mechanical damage from the fall (e.g. breakage of the pentaprism).
  
• The tool projects a rotating laser beam when in operation.
  

Checking the main and transverse horizontal axes

1. Set up a tripod approx. 20 m (66 ft) from a wall and align the tripod head horizontally with a spirit level.
   
2. Mount the rotating laser on the tripod and use the visual sighting method to aim the rotating laser at the wall.
   
3. Fig. a: Use the laser receiver to catch the laser beam for point (1) and mark this point on the wall.
   
4. Turn the rotating laser clockwise through 90° round its center axis. In doing so, make sure that the height of the rotating laser does not change.
   
5. Fig. b: Use the laser receiver to catch the laser beam for a second point (2) and mark this point on the wall.
   
6. Fig. c and d: Repeat the two preceding steps two more times. Use the laser receiver to catch the laser beam for points (3) and (4) and mark the points on the wall.
   
   If the procedure has been carried out accurately, the vertical distance between the two marked points (1) and (3) (main axis) and between points (2) and (4) (transverse axis) should each be <2 mm (at 20 m) (<0.08 in at 66 ft). If the deviation is greater than this, return the rotating laser to Hilti Service for calibration.
   

Hilti Measuring Systems Service

• Choose a test/inspection interval that matches usage of the device.
  
• Have the product checked by Hilti Measuring Systems Service after exceptionally heavy use or subjection to unusual conditions or stress, before important work or at least once a year.