NUN 054 IE-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.

Symbols on the power tool

Symbols

The following symbols are used:

	Risk of crushing injury!
	Risk of cutting injury!
	Wear protective glasses!
	Wireless data transfer
	Hilti Li-ion battery type series used. Observe the information given in the section headed Intended use .

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

  Crimping / pressing and cutting tool	NUN 054 IE-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 issued by the certification department 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, clothing and gloves 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.
  

Additional safety instructions for crimping and cutting tools

Personal safety

• Use the product only if it is in perfect working order.
  
• Never tamper with or modify the tool in any way.
  
• Check that the locking pin is pushed in all the way and securely engaged.
  

Electrical safety

• Before use of the power tool, all live cables or other items carrying electric voltage within the area in which the user is working are to be switched off. If this is not possible, the corresponding safety precautions for working in the proximity of live cables or equipment must be implemented and observed.
  
• Do not crimp or cut through live cables, i.e. cables carrying electricity. The tool must be considered to be uninsulated and must therefore be used in conjunction with personal protective equipment (protective gloves, protective footwear, protective clothing, etc.) of a type suitable to provide protection for yourself and other persons in the vicinity. The power tool is suitable for use on insulated platforms.
  

Power tool use and care

• After approx. 50 consecutive crimping or cutting operations, switch the power tool off and allow it to cool down for about 15 minutes. Overheating can lead to damage to the power tool.
  

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 .
  

Product overview

1. Top section
   
2. Manual piston return switch
   
3. Casing
   
4. Servicing and fault indicator (red LED)
   
5. Battery release button
   
6. Battery
   
7. Slot on both sides, for attaching the Hilti retaining strap
   
8. White LED to illuminate the working area
   
9. Control switch
   
10. Locking pin for opening/closing the tool head
    
11. Pressing / cutting jaws
    
12. Catch
    For securing and for removing the crimping / pressing die
    
13. Crimping / pressing die
    Use with the corresponding crimping / pressing jaws, depending on the application.
    

Intended use

The product described is a cordless electro-hydraulic crimping and cutting tool.

It is designed for crimping connectors made of copper (Cu) or aluminum (Al) as well as for cutting through electric cables made of copper (Cu), aluminum (Al) or steel.
Depending on the application it is to be used for, the tool can be equipped with crimping or cutting jaws.
Before use of the power tool, all live cables or other items carrying electric voltage within the area in which the user is working must be switched off. If this is not possible, the corresponding safety precautions for working in the proximity of live cables or equipment must be implemented and observed.

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

• Use only Hilti battery chargers of the C4/36 series for charging these batteries.

Possible misuse

• Do not use this hand-held power tool clamped in a fixed position or as a stationary device.
  
• This electro-hydraulic crimping and cutting tool may not be exposed to heavy rain or used under water.
  

Lithium‑ion battery status display

The charge status of the Li-ion battery and malfunctions of the power tool are indicated by the display on the Li‑ion battery. The charge status of the Li‑ion battery is displayed after pressing one of the two battery release buttons.

Status	Meaning
4 LEDs light.	Charge status: 75 % to 100 %
3 LEDs light.	Charge status: 50 % to 75 %
2 LEDs light.	Charge status: 25 % to 50 %
1 LED lights.	Charge status: 10 % to 25 %
1 LED blinks.	Charge status: < 10 %

Items supplied

Crimping / pressing and cutting tool, operating instructions.
Other system products approved for use with this product can be found at your local HILTI STORE or online at: www.hilti.group

Selecting the crimping / pressing die

A table to assist with selecting the type of crimping / pressing die to be used can be found at the end of these operating instructions.

Battery

Battery operating voltage	21.6 V
Ambient temperature for operation	−17 ℃ … 60 ℃ (1 ℉ … 140 ℉)
Storage temperature	−20 ℃ … 40 ℃ (−4 ℉ … 104 ℉)
Battery charging starting temperature	−10 ℃ … 45 ℃ (14 ℉ … 113 ℉)

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 release buttons on the battery.
   
2. Pull the battery out of its holder in the device.
   

Fitting the crimping / pressing or cutting jaws

1. Remove the battery and select the most suitable crimping / pressing or cutting jaws.
   
2. Press the locking pins.
   
3. Rotate the locking pins counterclockwise as far as they will go.
   
4. Pull out the locking pins.
   
5. Fit the crimping / pressing or cutting jaws.
   
6. Push the locking pins in until they engage.
   
7. Rotate the tool head to the desired working position.
   
   The tool head can be rotated much more easily when not under pressure.
   

Removing the crimping / pressing or cutting jaws

1. Remove the battery and rotate the head of the tool to the outset position.
   
2. Press the locking pins.
   
3. Rotate the locking pins counterclockwise as far as they will go.
   
4. Pull out the locking pins.
   
5. Remove the crimping / pressing or cutting jaws toward the nose of the tool.
   

Inserting the crimping die (only for crimping jaws with crimping dies)

1. Remove the battery.
   
2. Select a suitable crimping die. Push the two halves of the crimping / pressing die in until they engage.
   

Removing the crimping die (only for crimping jaws with crimping dies)

1. Remove the battery.
   
2. Pull back the locking mechanism and remove the two halves of the crimping die.
   

Changing the cutting edges

1. Remove the battery.
   
2. Unscrew the cutting edge securing screws.
   
3. Remove the cutting edges by pulling them out toward the front end of the tool.
   
4. Insert the new cutting edges in the tool.
   
5. Tighten the cutting edge securing screws.
   

Assemble Hilti retaining leash (optional)

1. Remove the battery.
   
2. Insert the two tabs on the retaining leash into the slots on each side of the base.
   
3. Secure the retaining leash with the screws supplied.
   
4. Refit the battery.
   

Dismantle the Hilti retaining leash (optional)

1. Remove the battery.
   
2. Remove the two retaining strap securing screws.
   
3. Pull the two retaining strap tabs out of the slots in the base and remove the retaining strap.
   
4. Refit the battery.
   

Crimping

1. Insert the connector in the open crimping die.
   
2. Press the control switch.
   
3. Keep the control switch pressed until the piston has retracted.
   
4. Repeat the crimping operation if necessary, beginning at A and moving in the direction of arrow B, carrying out the number of crimping operations given in the tables.
   

Making the cut

1. Place the material to be cut in the open cutting jaws or hold the tool with open cutting jaws against the material to be cut.
   
   Always make sure that the material to be cut is fully inserted into the cutting head.
   Do not exceed the maximum cutting capacity.
   Do not attempt to cut material that cannot be inserted fully into the cutting head.
   
2. Press the control switch.
   
3. Keep the control switch pressed until the piston has retracted.
   

The crimping / cutting tool is not in working order.

The crimping / cutting tool is in working order.