HILTI Nuron DSH 600-22, DSH 700-22 - Battery Cut Off Saw Manual

Information about the operating instructions

About these operating instructions

• Read these operating instructions before the product is used or operated for the first time. This is a prerequisite for safe, trouble-free handling and use of the product.
• Observe the safety instructions and warnings in these operating instructions and on the product.
• Always keep the operating instructions with the product and make sure that the product is accompanied by these operating instructions only, when the product is given to other persons.

Explanation of symbols

Warnings

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

• Draws attention to imminent danger that will lead to serious personal injury or fatality.

• Draws attention to a potential threat of danger that can lead to serious injury or fatality.

• Draws attention to a potentially dangerous situation that could lead to personal injury or damage to the equipment or other property.

Symbols in the operating instructions

The following symbols are used in these 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

The following symbols are used in illustrations:

	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 illustration and refer to the numbers used in the key in the product overview section.
	These characters are intended to specifically draw your attention to certain points when handling the product.

Product-dependent symbols

Symbols on the product

The following symbols are used on the product:

Hazard warning symbols

The following symbols are used on the product:

	General hazard
	Hazard due to flying sparks
	Hazard due to kickback
	Warning: Do not inhale toxic vapors or exhaust fumes
	Maximum spindle speed

Obligation symbols

The following obligation symbols are used on the product:

	Wear ear protection, eye protection, respiratory protection and a hard hat
	Wear protective gloves
	Wear safety shoes

Prohibition symbols

The following prohibition symbols are used on the product:

	Do not use toothed cut-off wheels
	Do not use damaged cut-off wheels

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
DSH 600-22

Diamond cut-off saw	DSH 600-22
Generation	01
Serial no.

Product information
DSH 700-22

Diamond cut-off saw	DSH 700-22
Generation	01
Serial no.

Safety

General power tool safety warnings

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.

Safety instructions for cut-off tools

• The guard belonging to the power tool must be securely mounted on the power tool and positioned such that maximum safety is achieved, i.e. the smallest possible segment of the abrasive wheel is exposed toward the person operating the power tool. Position yourself and bystanders away from the plane of the rotating wheel. The guard helps protect the person operating the power tool from broken wheel fragments and accidental contact with the wheel.
• Use only bonded reinforced or diamond cut-off wheels for your power tool. The fact that an accessory can be attached to the power tool does not necessarily mean that it can be used safely.
• The rated speed of the accessory must be at least equal to the maximum speed marked on the power tool. Accessories running faster than their rated speed can disintegrate and fly apart.
• Wheels may be used only for the recommended applications. For example: Do not grind with the side of a cut-off wheel. Abrasive cut-off wheels are intended for peripheral abrasive cutting. Lateral forces applied to these wheels may cause them to shatter.
• Always use an undamaged clamping flange of the correct size and shape for your selected grinding wheel. The correct flange supports the grinding wheel, reducing the risk of wheel breakage.
• Do not use worn-down, originally larger-diameter grinding wheels from larger power tools. Grinding wheels intended for a larger power tool are not suitable for the higher speed of a smaller tool and can break.
• The outside diameter and the thickness of the accessory tool must be within the ranges stated for your power tool. Incorrectly sized accessory tools cannot be adequately guarded or controlled.
• Wheels and flanges must be a perfect fit on the mounting hardware of your power tool. Accessory tools that are not a perfect fit on the mounting hardware of the power tool rotate out of balance, vibrate very severely and can lead to loss of control.
• Do not use damaged wheels. Prior to use, always check the wheels for splintering and cracks. If the power tool or the wheel is dropped, inspect for damage or use an undamaged wheel. After inspecting and installing a wheel, position yourself and bystanders away from the plane of the rotating wheel and run the power tool at maximum speed for one minute. If a wheel has been damaged it will usually break during this test period.
• Wear personal protective equipment. Wear a face shield, eye protection or safety goggles, as appropriate to the application. As appropriate, wear dust mask, hearing protectors, gloves or workshop apron capable of stopping small abrasive or workpiece fragments. Make sure your eyes are protected against the flying debris created by various machining operations. The dust mask or respirator must be capable of filtering out dust particles resulting from use of the power tool. Prolonged exposure to high-intensity noise can cause hearing loss.
• Keep bystanders a safe distance away from the work area. Anyone entering the work area must wear personal protective equipment. Fragments of the workpiece or of a broken accessory tool may fly off and cause injury beyond the immediate area of operation.
• Only hold the tool by its insulated gripping surfaces if carrying out work where the insert tool may come into contact with concealed wiring. Metal parts of the power tool can also become live, resulting in electric shock, if contact is made with a live cable.
• Never lay the power tool down before the accessory tool has come to a complete stop. If the rotating accessory tool is allowed to touch the surface on which you place the power tool, you could lose control of the power tool.
• Never start the power tool while carrying it around. Accidental contact with the spinning accessory could snag your clothing, pulling the accessory into your body.
• Clean the ventilation slots on the power tool at regular intervals. The motor's fan draws dust into the housing and a build-up of metallic dust can cause electrical hazards.
• Do not operate the power tool near flammable materials. Sparks could ignite these materials.

Kickback and the applicable safety instructions
Kickback is the sudden reaction to a snagged or jammed rotating wheel. Snagging or binding brings the rotating accessory tool to an abrupt stop. This forces an uncontrolled power tool in the direction opposite to the accessory tool's direction of rotation at the point of binding.
For example, if an abrasive wheel is snagged or pinched by the workpiece, the edge of the wheel entering the pinch point can dig into the surface of the material causing the wheel to climb out or kick back. The wheel then skips toward or away from the operator, depending on the wheel's direction of movement at the point of pinching. Abrasive wheels can also break under these conditions.
Kickback is the result of power tool misuse and/or incorrect operating procedures or conditions. It can be avoided by taking the proper precautions as described below.

• Maintain a firm grip on the power tool and position your body and arms to absorb kickback forces. Always use the auxiliary handle, if provided, for maximum control over kickback forces or torque reaction during start-up. By adopting suitable precautionary measures the operator can control the kickback and reaction forces.
• Always keep your hand well clear of the rotating accessory tool. Kickback could cause the accessory tool to pass across your hand.
• Keep clear of the areas in front of and behind the rotating cut-off wheel. Kickback will propel the power tool in the direction opposite to the wheel's direction of rotation at the point of snagging.
• Exercise special care when working at corners, sharp edges, etc. Avoid allowing the accessory tool to bounce off or jam in the workpiece. The rotating accessory tool has a tendency to jam at corners and sharp edges, or if it bounces off the workpiece. This causes loss of control or kickback.
• Do not use a saw-chain or toothed saw blade and do not use a segmented diamond wheel with slots more than 10 mm wide. Cutting tools of this kind frequently cause kickback or loss of control of the power tool.
• Do not "jam" the cut-off wheel or apply excessive pressure. Do not attempt to make excessively deep cuts. Overstressing the wheel increases loading and susceptibility to twisting or binding of the wheel in the cut and the possibility of kickback or wheel breakage.
• When the wheel is binding or when interrupting a cut for any reason, switch off the power tool and hold the power tool motionless until the wheel comes to a complete stop. Never attempt to remove the cut-off wheel from the cut while the wheel is in motion otherwise kickback may occur. Investigate and take corrective action to eliminate the cause of the wheel binding.
• Do not switch the power tool on again while the accessory tool is in the cut. Let the cut-off wheel reach full speed and carefully re-insert it into the cut. The wheel can bind, walk up or kick back if the power tool is restarted with the wheel in the workpiece.
• Support panels or large workpieces to minimize the risk of wheel bind and kickback. Large workpieces tend to sag under their own weight. Supports must be placed under the workpiece on both sides of the cut-off wheel, both close to the line of cut and near the edge of the workpiece.
• Use extra caution when making a "pocket cut" into existing walls or other blind areas. Kickback can occur if the cut-off wheel slices into gas or water pipes, electric wiring or other objects as it plunge-cuts.

Additional safety instructions

Personal safety

• If work involves break-through, always secure the area on the side opposite where the work is carried out. Pieces of debris could drop out and/or fall down and injure other persons.
• Use the product and accessories only when they are in perfect working order.
• Do not use the product while standing on ladders (unless you are wearing adequate fall-arrest protective equipment).
• Never tamper with or modify the product or accessories in any way. Use only spare parts and accessories recommended by Hilti.
• Wear protective gloves when using the power tool and when changing accessory tools.
• Take breaks between working and do relaxation and finger 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.
• Do not use the cut-off saw to cut flammable materials such as wood or magnesium, or hazardous materials such as materials containing asbestos.
• Make sure that the workplace is well ventilated. Large quantities of dust in poorly ventilated work zones can be harmful to health. Dust from materials such as paint containing lead, some types of wood and also metal can be harmful to health. Contact with or inhalation of the dust can cause allergic reactions and/or respiratory or other diseases among operators or bystanders. Only specialists are permitted to handle material containing asbestos.
• Cutting into unknown materials can release dust and vapors of unknown chemical composition that can be harmful to health. Before starting work, obtain detailed information about the composition of the material to be cut. You and others in the work zone must always wear dust masks approved for the composition of the material to be cut.
• Dust produced by grinding, sanding, cutting and drilling can contain dangerous chemicals. Some examples are: lead or lead-based paints; brick, concrete and other masonry products, natural stone and other products containing silicates; certain types of wood, such as oak, beech and chemically treated wood; asbestos or materials that contain asbestos. Determine the exposure of the operator and bystanders by means of the hazard classification of the materials to be worked. Implement the necessary measures to restrict exposure to a safe level, for example by the use of a dust collection system or by the wearing of suitable respiratory protection. The general measures for reducing exposure include:
  • working in an area that is well ventilated,
  • avoidance of prolonged contact with dust,
  • directing dust away from the face and body,
  • wearing protective clothing and washing exposed areas of the skin with water and soap.
• Risk of injury by falling tools and/or accessories. Before starting work, check that the battery and installed accessories are secure.

Electrical safety

• Before beginning work, check the working area (e.g. using a detector) to ensure that no concealed electric cables or gas and water pipes are present. External metal parts of the power tool can become live, for example if you accidentally damage electric wiring.
• Always clean the power tool and the Li-ion batteries separately; do not use a high-pressure cleaner and do not attempt to spray them clean with a garden hose, for example.
• Always dry cut-off saw and Li-ion battery separately from each other if they are wetted.

Using and handling the power tool

• Always hold the power tool securely with both hands firmly on the defined grips.
• Do not touch rotating parts; rotating accessory tools in particular can lead to injuries if touched.
• Do not switch the power tool on until you are at the workplace and are holding the power tool firmly with both hands.
• Before use, check that the accessory tool has been installed correctly and is secure, then run the power tool under no load for one minute in safe conditions. Switch off the power tool immediately if significant vibration occurs or some other fault is perceived. Under these circumstances, check the entire system to ascertain the cause.
• Do not use the power tool if it starts sharply or jerkily. The electronics might be defective. Have the power tool repaired by Hilti Service.
• Do not, under any circumstances, use the power tool without the guard correctly installed.
• Always adjust the guard to the optimum position to protect yourself from sparks and flying fragments of material.
• Make sure that the water supply does not exceed the maximum permissible pressure of 6 bar.
• When it is hot, do not set down the power tool near flammable liquids or surfaces.
  Slits cut in load-bearing walls of buildings or other structures may influence the statics of the structure, especially when steel reinforcing bars or load-bearing components are cut through.
• Consult the responsible structural engineer, architect or person in charge of the building project before beginning the work.
• Guide the power tool carefully and make straight cuts in order to keep the accessory tool from jamming. Do not attempt to make curved cuts.
• Guide the power tool smoothly, without applying lateral pressure to the accessory tool. Always bring the power tool into contact with the workpiece at right angles. Do not attempt to change the line of cut by applying lateral pressure or by bending the accessory tool while cutting is in progress. This could damage the accessory tool and cause it to break.
• Never use the power tool without the spray guard.

• Do not carry the saw trolley and the product together.
• Fit the filled water tank only after the saw has been mounted on the saw trolley. This precaution enables you to keep the saw trolley from tipping over.
• Remove the filled water tank before transporting the saw trolley or removing the cut-off saw from the saw trolley.
• Do not stand the product and the saw trolley on an inclined surface. Apply the wheel brake when you leave the power tool with saw trolley standing.
• If the throttle cable of the saw trolley sticks, immediately remove the batteries from the power tool.

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.

Description

1. Protective frame for battery
2. Main grip
3. Control switch
4. Water supply connection
5. Water flow regulating valve
6. Water line
7. Grip for guard adjustment
8. Curved water distributor with integrated water nozzles
9. Cut-off wheel
10. Clamping flange with securing screw
11. Guard
12. Direction-of-rotation arrow
13. Front grip
14. Latching switch, transport lock
15. Safety switch
16. Assembly tool
17. Li ion battery
18. Release button
19. Charge-status and fault indicator, battery

Intended use

The product described is a hand-held cordless cut-off saw. It is designed for outdoor and indoor dry-cutting or wet-cutting mineral or metallic construction materials and asphalt with abrasive cut-off wheels or diamond cut-off wheels. To reduce the amount of dust produced by cutting, Hilti recommends wet-cutting or the use of genuine Hilti accessories for dust extraction (such as the DSH-DRS).
Read and observe the instructions on safety and use in the operating instructions of the accessory products.

• Do not mount the cut-off saw in custom-built jigs such as frames on rollers or rails.

Instructions for use

• To reduce the amount of dust produced when cutting, by preference use the wet-cutting method or work with accessories for dust extraction such as theDSH-DRS.
• Do not cut right through the workpiece in one pass. Move the saw back and forward several times until it gradually reaches the desired cutting depth.
• To avoid damaging the diamond cut-off wheel when dry-cutting, lift the wheel out of the cut for approx. 10 seconds every 30 to 60 seconds while the saw is still running.
• Resharpen a dulled diamond cut-off wheel (i.e. when no diamonds project from the segment matrix) by cutting with the wheel in a very abrasive material such as sandstone.

Cut-off wheel specifications

Risk of injury. The use of cut-off wheels that are not in compliance with the ANSI standard can increase the risk of injury for the user.

• Do not use cut-off wheels that are not in compliance with the existing ANSI standard for cut-off wheels.

Diamond cut-off wheels in accordance with ANSI B7.1 are to be used with the product. Synthetic resinbonded, fiber-reinforced cut-off wheels in accordance with ANSI B7.1 (flat, not depressed-center, type cut-off wheel) may also be used with the product for working on metals.
The instructions for use and installation instructions issued by the cut-off wheel manufacturer must be observed.

Transport lock of the cut-off saw

The cut-off saw has a transport lock for transportation over short distances. The transport lock prevents inadvertent starting of the cut-off saw when it is carried with the batteries still inserted.

• Use the transport lock only for short transport activities, for example when handing the cut-off saw down into or lifting it up out of a trench, or when you have to interrupt work for a short break.
• For transporting over longer distances and for set-up operations, cleaning and maintenance, always comply with the instructions set out in the section headedSafety and the section headed Transport and storage of cordless tools!

Saw blade brake

The product is equipped with an integrated saw blade brake to increase operator safety.
The saw blade is braked to a standstill in a maximum of 4 seconds after the control switch is released.

Status indicators of the Li ion battery

Hilti Nuron Li-ion batteries can indicate state of charge, fault messages and the battery's state of health.

Indicators for state of charge and fault messages

Risk of injury by a falling battery!

• If the release button is pressed with a battery inserted in the product, subsequently check that the battery is correctly re-engaged and secure.

Short-press the release button of the battery to get whichever of the following status indications is applicable at the time.
State of charge and, if applicable, faults are indicated constantly as long as the connected product is switched on.

Status	Meaning
Four (4) LEDs show constantly green	State of charge: 100% to 71%
Three (3) LEDs show constantly green	State of charge: 70% to 51%
Two (2) LEDs show constantly green	State of charge: 50% to 26%
One (1) LED shows constantly green	State of charge: 25% to 10%
One (1) LED slow-flashes green	State of charge: < 10%
One (1) LED quick-flashes green	The Li-ion battery is completely discharged. Recharge the battery. If the LED again starts quick-flashing after the battery has been charged, consult Hilti Service.
One (1) LED quick-flashes yellow	The Li-ion battery or the product in which it is inserted is overloaded, too hot or too cold, or experiencing some other fault. Bring the product and the battery to the recommended working temperature and do not overload the product when it is in use. If the message persists, consult Hilti Service.
One (1) LED shows yellow	The Li-ion battery and the product in which it is inserted are not compatible. Consult Hilti Service.
One (1) LED quick-flashes red	The Li-ion battery is locked and cannot be used. Consult Hilti Service.

Indicators showing the battery's state of health

To check the battery's state of health, press the release button and hold it down for longer than three seconds. The system does not detect a potential malfunction of the battery due to misuse, for example battery dropped or pierced, external heat damage, etc.

Status		Meaning
All LEDs show in sequence, followed by one (1) LED showing constantly green.		The battery can remain in use.
All LEDs show in sequence, followed by one (1) LED quick-flashing yellow.		The check to ascertain the battery's state of health did not complete. Repeat the procedure, or consult Hilti Service.
All LEDs show in sequence, followed by one (1) LED showing constantly red.		If a connected product can still be used, the remaining battery capacity is below 50%. If a connected product can no longer be used, the battery has reached the end of its useful life and has to be replaced. Consult Hilti Service.

Items supplied

Cordless cut-off saw, D60 flange for diamond cut-off wheels, arbor locking pin, operating instructions
Other system products approved for use with this product can be found at your local Hilti Store or at: www.hilti.group

Technical data

Product properties

	DSH 600-22	DSH 700-22
Weight in accordance with EPTA Procedure 01, without battery	8.5 kg (18.7 lb)	8.8 kg (19.4 lb)
Max. wheel diameter	300 mm (11.8 in)	300 mm (11.8 in)
Max. cutting depth	120 mm (4.7 in)	120 mm (4.7 in)
Tightening torque (securing screw)	20 Nm... 30 Nm (15 ftlb... 22 ftlb ) f f	20 Nm... 30 Nm (15 ftlb... 22 ftlb ) f f
Max. speed (drive spindle)	5,080 /min (84.7 Hz)	5,080 /min (84.7 Hz)
Max. permissible water pressure	6 bar (90 psi)	6 bar (90 psi)
Arbor hole, cut-off wheel / diameter of centering collar of centering bushing (reversible)	20 mm or 25.4 mm (0.8 in or 1.00 in)	20 mm or 25.4 mm (0.8 in or 1.00 in)

Cut-off wheels

Risk of injury by inadvertent starting!

• Before inserting the battery, make sure that the product is switched off.
• Remove the battery before making any adjustments to the power tool or before changing accessories.

Risk of injury by short circuit or falling battery!

• Before inserting the battery, make sure that the contacts on the battery and the contacts on the product are free of foreign matter.
• Make sure that the battery always engages correctly.

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.

Installing cut-off wheel

Risk of injury and damage. Damaged cut-off wheels may break.

• If the cut-off wheel has been subjected to an impact, check the disc for damage and replace it if necessary.
• Never use cut-off wheels that are damaged, run untrue or vibrate.
• Don't use synthetic resin-bonded fiber-reinforced cut-off wheels which have exceeded their use-by date or already softened due to water absorption.

Risk of injury and risk of burns! Cut-off wheels become hot when in use and can have sharp edges that lead to injuries.

• Wear protective gloves for installing, removing and adjusting the accessory tool or other components, and during troubleshooting operations.

Install only the clamping flange that is suitable for the cut-off wheel used. The outside diameters are stated in the technical data.
Clamping flanges specially designed for diamond cut-off wheels bear the following wording by way of identification: "ONLY FOR DIAMOND WHEELS".

1. Remove a mounted dust extraction module (accessory).
2. Clean all clamping and centering surfaces on the cut-off saw and the cut-off wheel.
3. Check that the mounting flange and the clamping flange are correct for the cut-off wheel.
   • Change the mounting flange if necessary.
4. Position the cut-off wheel flush and centered on the mounting flange.
   • The cut-off wheel's direction of rotation matches the direction-of-rotation arrow.
5. Position the clamping flange flush and centered and install the securing screw.
6. Insert the locking pin into the hole in the belt cover.
7. Gently turn the cut-off wheel until the locking pin engages.
8. Tighten the securing screw with the assembly tool.

Technical data
Tightening torque (securing screw)	20 Nm... 30 Nm (15 ftlbf ... 22 ftlbf)

9. Remove the locking pin.
   After installing a new cut-off wheel, start the cut-off saw and allow it to run without load at full speed for approx. 1 minute. Check for roughness in operation or vibration; if a cut-off wheel is damaged it will generally break during this test run.

Removing the cut-off wheel

Risk of injury and damage. Damaged cut-off wheels may break.

• If the cut-off wheel has been subjected to an impact, check the disc for damage and replace it if necessary.
• Never use cut-off wheels that are damaged, run untrue or vibrate.
• Don't use synthetic resin-bonded fiber-reinforced cut-off wheels which have exceeded their use-by date or already softened due to water absorption.

1. Remove a mounted dust extraction module (accessory).
2. Insert the locking pin into the hole in the belt cover.
3. Gently turn the cut-off wheel until the locking pin engages.
4. Slacken the securing screw with the assembly tool.
5. Remove the securing screw, clamping flange and cut-off wheel.
6. Remove the locking pin.

Adjusting the guard

Risk of injury. Contact with the cut-off wheel, flying fragments or sparks can cause injury to persons.

• Adjust the guard so that flying particles or fragments of the material removed and flying sparks are directed away from the operator and the product.
• Hold the guard by the grip provided and rotate it to the desired position.

Installing cut-off saw on saw trolley (accessory)

DSH 700-22
Before starting installation of the power tool on the saw trolley, install the wheel set (accessory).

1. Remove the water tank from the saw trolley.
2. Move the cutting depth adjustment lever into the upper position.
3. Open the hold-down device by releasing the screw knob.
4. Set the cut-off saw with the wheels in front mount(1) and swivel the grip of the cut-off saw underneath hold-down device (2) .
5. Secure the cut-off saw by tightening screw knob(3) .
6. Secure the throttle cable to control switch(4) .
7. Fit the water tank after filling it.
8. Connect the water hose to the cut-off saw by means of a Gardena coupler.
9. Adjust the grip to a convenient working height.
10. Adjust the guard to the correct position.

Preparations for dust extraction module

Installing dust extraction module (accessory)

Used in combination with an industrial vacuum cleaner, the dust extraction module reduces the amount of dust created by dry-cutting operations. Use the dust extraction module only for dry-cutting in mineral materials. The severe heat produced by cutting in metals or use for wet cutting will destroy the dust extraction module.
Read and observe the instructions on safety and use in the operating instructions of the accessory.

1. Clean the blade guard and the notches for installation of the dust extraction module.
2. Move the blade guard until the installation position of the dust extraction module is freely accessible.
3. Slacken the nut on the dust extraction module until the housing parts can be opened as far as the end stops on the connecting axle.
4. Engage the dust extraction module in the notches provided for the purpose in the blade guard.
   • The notches slide smoothly into engagement without jamming.
5. Tighten the nut hand-tight.
6. Return the blade guard to the closed position.
7. Connect an industrial vacuum cleaner suitable for the application to the dust extraction module.

Removing dust extraction module (accessory)

1. Move the blade guard until the installation position of the dust extraction module is freely accessible.
2. Slacken the nut on the dust extraction module.
3. Disengage the dust extraction module from the blade guard.
4. Return the blade guard to the closed position.

Operation

Unless otherwise stated, the descriptions below are applicable for DSH 600-22 and DSH 700-22.

Cutting techniques

Avoiding kickback
There is a risk of kickback if the cut-off saw comes into contact with the working surface in the area indicated.

• Avoid bringing the cut-off saw into contact with the working surface in the area indicated.
• Always bring the cut-off wheel into contact with the workpiece from above. Allow the cut-off wheel to contact the workpiece only at a point below its rotational axis.
• Take special care when inserting the cut-off wheel in an existing kerf.

Avoiding stalling

Risk of cut-off wheel breakage or kickback. Application of excessive pressure causes distortion of the cut-off wheel. Sticking or stalling of the cut-off wheel increases the probability of kickback or cut-off wheel breakage.

• Avoid applying excessive pressure when cutting and don't allow the cut-off wheel to stick and stall.
• Don't attempt to make an excessively deep cut.
• When cutting a thick workpiece, increase the depth of the kerf in steps. Avoid excessively deep cuts.
• Allow the cut-off saw to reach full speed before starting the cut.
• Bring the cut-off wheel into contact with the workpiece at right angles and below the axis of rotation.
• Ease the cut-off wheel slowly into the workpiece in a back-and-forth movement, without applying excessive pressure.
• Apply moderate pressure, adjusting the rate of advance to suit the material being cut.
  A decrease in the rate of cutting progress may be an indication of blunt/dull ("polished") diamond segments. The diamond segments can be resharpened by making a few cuts in an abrasive material (Hilti sharpening plate or sand-lime block).
• Guide the cut-off saw smoothly and without applying lateral pressure to the cut-off wheel.
• Always hold the cut-off saw firmly with both hands on the grips provided. Keep the grips dry, clean and free from oil and grease.
• Make sure there is no-one in the working area and, in particular, in the direction in which the cut is to be made. Keep everyone approx. 15 m away from your workplace.

Positioning workpiece

• Support slabs or large workpieces so that the kerf remains open during and after the cutting operation.

Switching on and off

The cut-off saw has a transport lock. The transport lock prevents inadvertent starting of the cut-off saw when it is carried with the batteries still inserted.
Comply with the instructions for use of the transport lock in the section headed Transport lock of the cut-off saw

1. Hold the cut-off saw by the grips provided for the purpose.
2. Press and hold down the safety switch.
3. Press the control switch.
   • The cut-off saw runs.
4. To switch the cut-off saw off, release the control switch and the safety switch.

Working with dust extraction module (accessory)

When dry-cutting with a dust extraction module, always wear a dust mask as an additional precaution! Additionally, comply with and follow the national dust control regulations.
Used in combination with an industrial vacuum cleaner, the dust extraction module reduces the amount of dust created by dry-cutting operations. Use the dust extraction module only for dry-cutting in mineral materials. The severe heat produced by cutting in metals or use for wet cutting will destroy the dust extraction module.
Dust extraction is most effective when the cut-off saw cuts in the pull direction. A residual amount of dust can escape nevertheless, for example when the wheel bites into a fold or edge of a workpiece.

1. Install the dust extraction module (accessory).
2. Bring the cut-off saw with dust extraction module into contact with the workpiece.
   • The rear edge of the dust extraction module contacts the workpiece.
3. Switch the cut-off saw on.
4. Ease the cut-off wheel into the workpiece.
5. Execute the cut in accordance with the selected direction of cutting.
   • While cutting is in progress, keep the dust extraction module as close as possible to the workpiece.

Care and maintenance

Risk of injury with battery inserted !

• Always remove the battery before carrying out care and maintenance tasks!

Care of the cut-off saw

• Use only a damp cloth to wipe the cut-off saw clean. Do not clean with a high-pressure cleaner.
• Carefully remove any dirt that may be adhering to parts.
• Clean the air vents carefully with a dry brush.
• Do not use cleaning agents containing silicone as these can attack the plastic parts.

Care of the lithium ion batteries

• Keep the battery free from oil and grease.
• Use only a slightly damp cloth to clean the casing. Do not use cleaning agents containing silicone as these can attack the plastic parts.
• Avoid ingress of moisture.

Maintenance

• Check all visible parts and controls for signs of damage at regular intervals and make sure that they all function correctly.
• Do not operate the product if signs of damage are found or if parts malfunction. Have it repaired immediately byHilti Service.
• After cleaning and maintenance, fit all guards or protective devices and check that they function correctly.

To help ensure safe and reliable operation, use only genuine Hilti spare parts and consumables. Spare parts, consumables and accessories approved by Hilti for use with the product can be found at your local Hilti Store or online at: www.hilti.group.

Transport and storage of cordless tools and batteries

Transport

Accidental starting during transport !

• Always transport your products with the batteries removed!
• Remove the battery/batteries.
• Never transport batteries loose and unprotected. During transport, batteries should be protected from excessive shock and vibration and isolated from any conductive materials or other batteries that may come in contact with the terminals and cause a short circuit. Comply with the locally applicable regulations for transporting batteries.
• Do not send batteries through the mail. Consult your shipper for instructions on how to ship undamaged batteries.
• Prior to each use and before and after prolonged transport, check the product and the batteries for damage.

Storage

Accidental damage caused by defective or leaking batteries !

• Always store your products with the batteries removed!
• Store the product and the batteries in a cool and dry place. Comply with the temperature limits stated in the technical data.
• Do not store batteries on the charger. Always remove the battery from the charger when the charging operation has completed.
• Never leave batteries in direct sunlight, on sources of heat, or behind glass.
• Store the product and batteries where they cannot be accessed by children or unauthorized persons.
• Prior to each use and before and after prolonged storage, check the product and the batteries for damage.

Troubleshooting

If the trouble you are experiencing is not listed in this table or you are unable to rectify the problem by yourself, please contact Hilti Service.
If a problem occurs, always observe the charge-status and fault indicator of the battery.
→ See the section headed Status indicators of the Li ion battery.

Trouble or fault	Possible cause	Action to be taken
Cut-off saw does not run	The batteries are not charged.	Charge the battery.
	Battery not fully inserted.	Check that all batteries are correctly inserted and engaged.
High vibration, wheel wanders off the cutting line.	The cut-off wheel is not correctly fitted and tightened.	Check how it is fitted and the tightening torque.
	Cut-off wheel is damaged (or unsuitable specification, cracked, segments missing, bent, overheated, deformed, etc.).	Change the cut-off wheel.
	The centering bushing is fitted incorrectly.	Check that the diameter of the arbor hole in the cut-off wheel matches the centering collar of the cut-off wheel centering bushing.
Insufficient or no flow of water	Water nozzles are blocked.	Clean the water nozzles.