SIW 6 AT‑A22

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.
  

Explanation of symbols used

Warnings

Warnings alert persons to hazards that occur when handling or using the product. The following signal words are used:

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

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.

Product-dependent symbols

Symbols on the product

The following symbols can be used on the product:

	The power tool supports near-field communication (NFC) technology, which is compatible with iOS and Android platforms.
	Li-ion battery
	Hilti Li-ion battery type series used. Observe the information given in the section headed Intended use .
	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.
	Protection class II (double-insulated)
	Direct current (DC)
	Rated speed under no load
	Revolutions per minute

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

  Cordless impact wrench	SIW 6AT‑A22
  Generation	01
  Serial no.

Declaration of conformity

We declare, on our sole responsibility, that the product described here complies with the applicable directives and standards. A copy of the declaration of conformity can be found at the end of this documentation.
The technical documentation is filed here:
Hilti Entwicklungsgesellschaft mbH | Tool Certification | Hiltistrasse 6 | 86916 Kaufering, Germany

General power tool safety warnings

WARNING Read all safety warnings, instructions, illustrations and specifications provided with this power tool. Failure to follow all instructions listed below may result in electric shock, fire and/or serious injury.
Save all warnings and instructions for future reference.
The term "power tool" in the warnings refers to your mains-operated (corded) power tool or battery-operated (cordless) power tool.
Work area safety

• Keep work area clean and well lit. Cluttered or dark areas invite accidents.
  
• Do not operate power tools in explosive atmospheres, such as in the presence of flammable liquids, gases or dust. Power tools create sparks which may ignite the dust or fumes.
  
• Keep children and bystanders away while operating a power tool. Distractions can cause you to lose control.
  

Electrical safety

• Power tool plugs must match the outlet. Never modify the plug in any way. Do not use any adapter plugs with earthed (grounded) power tools. Unmodified plugs and matching outlets will reduce risk of electric shock.
  
• Avoid body contact with earthed or grounded surfaces, such as pipes, radiators, ranges and refrigerators. There is an increased risk of electric shock if your body is earthed or grounded.
  
• Do not expose power tools to rain or wet conditions. Water entering a power tool will increase the risk of electric shock.
  
• Do not abuse the cord. Never use the cord for carrying, pulling or unplugging the power tool. Keep cord away from heat, oil, sharp edges or moving parts. Damaged or entangled cords increase the risk of electric shock.
  
• When operating a power tool outdoors, use an extension cord suitable for outdoor use. Use of a cord suitable for outdoor use reduces the risk of electric shock.
  
• If operating a power tool in a damp location is unavoidable, use a residual current device (RCD) protected supply. Use of an RCD reduces the risk of electric shock.
  

Personal safety

• Stay alert, watch what you are doing and use common sense when operating a power tool. Do not use a power tool while you are tired or under the influence of drugs, alcohol or medication. A moment of inattention while operating power tools may result in serious personal injury.
  
• Use personal protective equipment. Always wear eye protection. Protective equipment such as a dust mask, non-skid safety shoes, hard hat or hearing protection used for appropriate conditions will reduce personal injuries.
  
• Prevent unintentional starting. Ensure the switch is in the off-position before connecting to power source and/or battery pack, picking up or carrying the tool. Carrying power tools with your finger on the switch or energising power tools that have the switch on invites accidents.
  
• Remove any adjusting key or wrench before turning the power tool on. A wrench or a key left attached to a rotating part of the power tool may result in personal injury.
  
• Do not overreach. Keep proper footing and balance at all times. This enables better control of the power tool in unexpected situations.
  
• Dress properly. Do not wear loose clothing or jewellery. Keep your hair and clothing away from moving parts. Loose clothes, jewellery or long hair can be caught in moving parts.
  
• If devices are provided for the connection of dust extraction and collection facilities, ensure these are connected and properly used. Use of dust collection can reduce dust-related hazards.
  
• Do not let familiarity gained from frequent use of tools allow you to become complacent and ignore tool safety principles. A careless action can cause severe injury within a fraction of a second.
  

Power tool use and care

• Do not force the power tool. Use the correct power tool for your application. The correct power tool will do the job better and safer at the rate for which it was designed.
  
• Do not use the power tool if the switch does not turn it on and off. Any power tool that cannot be controlled with the switch is dangerous and must be repaired.
  
• Disconnect the plug from the power source and/or remove the battery pack, if detachable, from the power tool before making any adjustments, changing accessories, or storing power tools. Such preventive safety measures reduce the risk of starting the power tool accidentally.
  
• Store idle power tools out of the reach of children and do not allow persons unfamiliar with the power tool or these instructions to operate the power tool. Power tools are dangerous in the hands of untrained users.
  
• Maintain power tools and accessories. Check for misalignment or binding of moving parts, breakage of parts and any other condition that may affect the power tool’s operation. If damaged, have the power tool repaired before use. Many accidents are caused by poorly maintained power tools.
  
• Keep cutting tools sharp and clean. Properly maintained cutting tools with sharp cutting edges are less likely to bind and are easier to control.
  
• Use the power tool, accessories and tool bits etc. in accordance with these instructions, taking into account the working conditions and the work to be performed. Use of the power tool for operations different from those intended could result in a hazardous situation.
  
• Keep handles and grasping surfaces dry, clean and free from oil and grease. Slippery handles and grasping surfaces do not allow for safe handling and control of the tool in unexpected situations.
  

Battery tool use and care

• Recharge only with the charger specified by the manufacturer. A charger that is suitable for one type of battery pack may create a risk of fire when used with another battery pack.
  
• Use power tools only with specifically designated battery packs. Use of any other battery packs may create a risk of injury and fire.
  
• When battery pack is not in use, keep it away from other metal objects, like paper clips, coins, keys, nails, screws or other small metal objects, that can make a connection from one terminal to another. Shorting the battery terminals together may cause burns or a fire.
  
• Under abusive conditions, liquid may be ejected from the battery; avoid contact. If contact accidentally occurs, flush with water. If liquid contacts eyes, additionally seek medical help. Liquid ejected from the battery may cause irritation or burns.
  
• Do not use a battery pack or tool that is damaged or modified. Damaged or modified batteries may exhibit unpredictable behaviour resulting in fire, explosion or risk of injury.
  
• Do not expose a battery pack or tool to fire or excessive temperature. Exposure to fire or temperature above 130° C (265 °F) may cause explosion.
  
• Follow all charging instructions and do not charge the battery pack or tool outside the temperature range specified in the instructions. Charging improperly or at temperatures outside the specified range may damage the battery and increase the risk of fire.
  

Service

• Have your power tool serviced by a qualified repair person using only identical replacement parts. This will ensure that the safety of the power tool is maintained.
  
• Never service damaged battery packs. Service of battery packs should only be performed by the manufacturer or authorized service providers.
  

Drill/driver safety warnings

• Hold the power tool by insulated gripping surfaces, when performing an operation where the fastener may contact hidden wiring. Fasteners contacting a "live" wire may make exposed metal parts of the power tool "live" and could give the operator an electric shock.
  

Additional safety precautions for screwdrivers

Personal safety

• Use the product only when it is in perfect working order.
  
• Never tamper with or modify the tool in any way.
  
• Use the auxiliary grips supplied with the power tool. Loss of control can cause personal injury.
  
• Always hold the tool firmly with both hands on the grips provided. Keep the grips clean and dry.
  
• Do not touch rotating parts – risk of injury!
  
• Wear suitable protective glasses, a hard hat, ear protection, protective gloves and light respiratory protection while using the power tool.
  
• Wear protective gloves also when changing the tool. Touching the accessory tool can result in cuts and burns.
  
• Wear eye protection. Flying fragments can injure the body and eyes.
  
• Before starting work, check the hazard class of the dust that will be produced when working. Use an industrial vacuum cleaner with an officially approved protection class in compliance with the locally applicable dust protection regulations. Dust from materials such as lead-based paint, certain types of wood and concrete/masonry/stone containing quartz, minerals or metal can be harmful to health.
  
• Make sure that the workplace is well ventilated and, where necessary, wear a respirator appropriate for the type of dust generated. Contact with or inhalation of the dust may cause allergic reactions and/or respiratory or other diseases among operators or bystanders. Certain kinds of dust are classified as carcinogenic such as oak and beech dust, especially in conjunction with additives for wood conditioning (chromate, wood preservative). Only specialists are permitted to handle material containing asbestos.
  
• Take breaks and do physical exercises to improve the blood circulation in your fingers. Exposure to vibration during long periods of work can lead to disorders of the blood vessels and nervous system in the fingers, hands and wrists.
  

Electrical safety

• Before beginning work, check the working area for concealed electric cables or gas and water pipes. External metal parts of the power tool may give you an electric shock if you damage an electric cable accidentally.
  

Power tool use and care

• Immediately switch off the power tool if the accessory tool jams. The power tool might twist off-line.
  
• Wait until the power tool stops completely before you lay it down.
  

Battery use and care

• Observe the special regulations and instructions applicable to the transport, storage and use of Li-ion batteries.
  
• Do not expose batteries to high temperatures, direct sunlight or fire.
  
• Do not disassemble, crush or incinerate batteries and do not subject them to temperatures over 80 °C.
  
• Do not use or charge batteries that have suffered mechanical impact, have been dropped from a height or show signs of damage. In this case, always contact your Hilti  Service .
  
• If the battery is too hot to touch it may be defective. In this case, place the product in a non-flammable location, well away from flammable materials, where it can be kept under observation and allowed to cool down. In this case, always contact your Hilti  Service .
  

Overview of the product

1. Square drive
   
2. Illumination
   
3. Forward/reverse selector switch with safety lock
   
4. Control switch (with electronic speed control)
   
5. Grip
   
6. Torque display
   
7. Torque selector button
   
8. Belt hook (optional)
   
9. Battery
   
10. Battery charge status display
    
11. Battery release button
    

Intended use

The product described is a hand-held cordless impact wrench. It is designed for tightening and releasing nuts, bolts, anchors and wood screws.

The impact wrench may be used only for applications that do not require a precise/specified torque. Failure to observe this point presents a risk of over-tightening and damage to the bolt, screw or workpiece.

• Use only Hilti lithium‑ion batteries of the B 22 series with this product.

• Use only Hilti -approved battery chargers to charge these batteries. More information is available from your Hilti Store or from www.hilti.group

Items supplied

Impact wrench, operating instructions.
Other system products approved for use with this product can be found at your local Hilti Store or at: www.hilti.group

Impact wrench

Rated voltage		21.6 V
Weight in accordance with EPTA Procedure 01 including B22⁄8.0 battery		2.4 kg
Rated speed under no load	Setting I	0 /min … 1,000 /min
	Setting II	0 /min … 1,500 /min
	Setting III	0 /min … 2,700 /min
Impact speed		≤ 3,500 bpm
Torque adjustment		Three settings (additional settings are possible when using the intelligent torque module SI‑AT‑22 and the torque display shows "AT")
Large standard bolts		M8 to M16
Large high-strength bolts		M6 to M12
Chuck		1/2″ square drive with ball-notch retention
Storage temperature		−20 ℃ … 70 ℃
Ambient temperature for operation		−17 ℃ … 60 ℃

Battery

Battery operating voltage	21.6 V
Ambient temperature for operation	−17 ℃ … 60 ℃
Storage temperature	−20 ℃ … 40 ℃
Battery charging starting temperature	−10 ℃ … 45 ℃

Noise information and vibration values in accordance with EN 62841

The sound pressure and vibration values given in these instructions were measured in accordance with a standardized test and can be used to compare one power tool with another. They can also be used for a preliminary assessment of exposure.
The data given represent the main applications of the power tool. However, if the power tool is used for different applications, with different accessory tools, or is poorly maintained, the data can vary. This can significantly increase exposure over the total working period.
An accurate estimation of exposure should also take into account the times when the tool is switched off, or when it is running but not actually being used for a job. This can significantly reduce exposure over the total working period.
Identify additional safety measures to protect the operator from the effects of noise and/or vibration, for example: maintaining the power tool and accessory tools, keeping the hands warm, organization of work patterns.
Noise information

Sound (power) level (LWA)	105 dB(A)
Uncertainty for the sound power level (KWA)	3 dB(A)
Emission sound pressure level (LpA)	94 dB(A)
Uncertainty for the sound pressure level (KpA)	3 dB(A)

Total vibration

Vibration emission value when tightening screws/bolts and nuts of the maximum permitted size (ah)	9.2 m/s²
Uncertainty for tightening screws/bolts and nuts of the maximum permitted size	1.5 m/s²

Preparations at the workplace

Observe the safety instructions and warnings in this documentation and on the product.

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 battery holder until it engages with an audible click.
   
3. Check that the battery is seated securely.
   

Removing the battery

1. Press the battery release buttons.
   
2. Remove the battery from the tool.
   

Fitting the belt hook (optional)

The belt hook enables you to attach suitable power tools to your belt. It can be fitted to allow attachment on the left or right side of the body.

1. Fit the belt hook.
   
2. Attach your power tool to the belt hook.
   
3. Check that belt hook and power tool are secure.
   

Fitting an accessory tool

1. Clean the connection end of the accessory tool.
   
2. Set the forward/reverse switch to the middle position or remove the battery from the power tool.
   
3. Bring the notch in the accessory tool into alignment with the ball on the square drive.
   
4. Push the accessory tool onto the square drive until it engages.
   
5. Allow the accessory tool to engage and check that it is held securely.
   

Removing the accessory tool

1. Set the forward/reverse switch to the middle position or remove the battery from the power tool.
   
2. Pull the accessory tool off the square drive.
   

Setting the torque

• Select one of the following alternatives:
  

Operation without the intelligent torque module

• Push the torque selector button repeatedly until the desired torque setting is displayed in the torque display.
  

Operation with the intelligent torque module

• On the intelligent torque module, set the correct type of anchor or threaded stud to be fastened or the screw to be used (→ Operating instructions for the intelligent torque module).
  
  • When "AT" lights in the torque display, the torque selector switch is inoperative. Speed and torque are regulated by the torque module.
    

Types of work

Observe the safety instructions and warnings in this documentation and on the product.

Setting forward or reverse rotation

• Set the forward/reverse switch to the desired direction of rotation.
  
  • An interlock prevents switching while the motor is running.
    
  • The control switch is locked when the forward/reverse switch is in the middle position (safety lock).
    

Switching on

• Press the control switch.
  
  When operated without the intelligent torque module: Speed of rotation is regulated by the travel of the control switch.
  When operated with the intelligent torque module: The control switch works only as an on/off switch and the speed of rotation is controlled via the intelligent torque module.
  

Screwdriving

Conditions : Operation without the intelligent torque module

1. Move the forward/reverse switch into the middle position.
   
2. Use the torque selector button to set the desired torque.
   
3. Set the forward/reverse switch to the desired direction of rotation.
   
   When using the intelligent torque module, the torque selector button does not work. The torque is controlled depending on the type of screw, threaded stud or anchor selected in the intelligent torque module (→ Operating instructions for the intelligent torque module).
   

Switching off

• Release the control switch.