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DD 30-W

Original operating instructions

Information about the 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.

Warnings

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

DANGER

DANGER !

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

WARNING

WARNING !

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

CAUTION

CAUTION !

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

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 product

The following symbols are used on the product:

	Warning: hazardous electrical voltage
	Warning: hot surface
	Revolutions per minute
	Rated speed under no load
	Wear eye protection
	Wear a hard hat
	Wear ear protection
	Wear protective gloves
	Wear safety shoes.
	Lock symbol
	Service indicator
	Drilling performance indicator
	Wireless data transfer

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

Type:
DD 30-W

Generation:
01

Serial no.:

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

Safety

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.

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.

When performing drilling that requires the use of water, route the water away from the operator’s work area or use a liquid collection device. Such precautionary measures keep the operator’s work area dry and reduce the risk of electrical shock.
Operate power tool by insulated grasping surfaces, when performing an operation where the cutting accessory may contact hidden wiring or its own cord. Cutting accessory contacting a “live” wire may make exposed metal parts of the power tool “live” and could give the operator an electric shock.
Wear hearing protection when diamond drilling. Exposure to noise can cause hearing loss.
When the bit is jammed, stop applying downward pressure and turn off the tool. Investigate and take corrective actions to eliminate the cause of the bit jamming.
When restarting a diamond drill in the workpiece check that the bit rotates freely before starting. If the bit is jammed, it may not start, may overload the tool, or may cause the diamond drill to release from the workpiece.
When securing the drill stand with anchors and fasteners to the workpiece, ensure that the anchoring used is capable of holding and restraining the machine during use. If the workpiece is weak or porous, the anchor may pull out causing the drill stand to release from the workpiece.
When drilling through walls or ceilings, ensure to protect persons and the work area on the other side. The bit may extend through the hole or the core may fall out on the other side.
Do not use this tool for overhead drilling with water supply. Water entering the power tool will increase the risk of electric shock.

Personal safety

During hand-held use, always hold the machine securely with both hands on the grips provided.
The machine and the diamond core bit are heavy. There is a risk of crushing parts of the body. Wear a hard hat, protective gloves and safety footwear.
Keep the grips dry, clean and free from oil and grease.
Improve the blood circulation in your fingers by relaxing your hands and exercising your fingers during breaks between working.
Avoid touching rotating parts. Switch the machine on only after bringing it into position at the workpiece. Touching rotating parts, especially rotating accessory tools, may lead to injury.
Always lead the supply cord, the extension cord and, if applicable, the suction hose away from the machine to the rear when working. This helps to avoid tripping over the cord or hose while working.
Do not allow drilling slurry to come into contact with the skin or eyes. Wear protective gloves and protective glasses.
Children are not permitted to play with the machine and must be instructed accordingly.
The machine is not intended for use by debilitated persons who have received no special training. Keep the machine out of reach of children.
The accessory tool may become hot during use or during sharpening. There is a risk of burning or cutting injuries. Wear protective gloves when touching or handling the accessory tool.
When the machine is mounted on the drill stand, lay it down safely on the floor or ground during breaks between use.
Never tamper with or modify the machine in any way.

Protection from dustDust from material such as paint containing lead, some wood species, minerals and metal may be harmful. Contact with or inhalation of the dust may cause allergic reactions and/or respiratory diseases to the operator 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). Material containing asbestos may be worked on only by specialists.

Use a dust removal system that is as effective as possible. To achieve a high level of dust collection, use a suitable vacuum cleaner of the type recommended by Hilti for wood dust and/or mineral dust and which is designed for use with this machine. Ensure that the workplace is well ventilated. The use of a dust mask of filter class P2 is recommended. Follow national requirements for the materials you want to work with.

Careful handling and use of electric tools and machines

Secure the workpiece. Use clamps or a vice to secure the workpiece. The workpiece is thus held more securely than by hand and both hands remain free to operate the machine.
Ensure that the accessory tools used have a mounting system that is compatible with the drilling machine and that they are secured in the chuck correctly.
Switch the machine off and unplug the supply cord in the event of an interruption in the electric supply in order to avoid inadvertent restarting when the power returns.
Operate the machine only when the cooling air slots are unobstructed.

Electrical safety

Before beginning the work, check the working area for concealed electrical cables, gas and water pipes, e.g. using a metal detector. External metal parts of the machine may become live, for example, when an electric cable is damaged accidentally. This presents a serious risk of electric shock.
Never operate the machine without the accompanying PRCD (machines without PRCD: Never operate the machine without an isolating transformer). Test the PRCD each time before use.
Check the machine’s supply cord at regular intervals and have it replaced by a qualified specialist if found to be damaged. If the machine’s supply cord is damaged it must be replaced with a specially-prepared and approved supply cord available from Hilti Customer Service. Check extension cords at regular intervals and replace them if found to be damaged. Do not touch the supply cord or extension cord if it is damaged while working. Disconnect the supply cord plug from the power outlet. Damaged supply cords or extension cords present a risk of electric shock.
Avoid body contact with earthed or grounded surfaces such as pipes, radiators, cookers, stoves and refrigerators. There is an increased risk of electric shock if your body is grounded.
Do not use a plug adapter.

Workplace

Ensure that the workplace is well ventilated. Exposure to dust at a poorly ventilated workplace may result in damage to the health.
Do not drill into hazardous materials (e.g. asbestos).
Approval must be obtained from the site engineer or architect prior to beginning drilling work. Drilling work on buildings and other structures may influence the static equilibrium of the structure, especially when steel reinforcing bars or load-bearing components are cut through.
It is recommended that rubber gloves and non-skid shoes are worn when working outdoors.
Suitable protective glasses, a hard hat, ear protection, protective gloves and safety footwear must be worn while the machine is in use. Other persons in the vicinity must also wear personal protective equipment.

Description

Chuck
Side handle DD-SH-30
Chuck locking lever
Water flow rate indicator
Water regulating lever
Switch lockbutton for operation on drill stand
Circular bubble level for vertical drilling
On/off switch
Grip
Tubular bubble level for horizontal drilling
Supply cord with PRCD
Water connection
Carbon brush cover
Suction hose holder
Depth gauge for hand-guided drilling
Service indicator
Drilling performance indicator

PRCD in the supply cord
LED on the PRCD
Reset button on the PRCD
TEST button on the PRCD

Slider for longitudinal adjustment of the water collector holder
Water collector holder release catch
Water collector holder

Centering ring
Water collector
Water collector hose
Spray guard

End stop screw
Column
Clamping piece
Locking screw
Retaining pin
Hand wheel
Carriage
Carriage lock
Grip
Clamping lever
Vacuum hose connector
Pressure gauge
Vacuum seal
Adapter plate
Vacuum base plate
Leveling screws
Vacuum release valve

The product described is an electrically powered diamond core drilling system. It is designed to be used hand-held or mounted on a drill stand, for wet drilling in concrete and other mineral materials. The drill stand can be fastened to the working surface by a suitable anchor (accessory) or by the vacuum base plate (accessory).

Connect the machine only to an electric supply providing the voltage and frequency specified on the type identification / rating plate.
Depending on the application and drilling direction (see following table), the diamond core drilling machine’s water collection system must be connected to an all-purpose vacuum cleaner of a type recommended by Hilti and the necessary additional equipment selected accordingly.

The water collection system and the correct combination of core bit and sealing ring, with the correct length setting, must be fitted and used for all drilling applications.

Drilling in an upwards direction is permissible only when the water collection system and additional spray guard are used.

Drilling in an upwards direction using the drill stand is not permissible as the spray guard cannot be fitted when the machine is mounted on the drill stand.

This product is not suitable for working on hazardous materials.
Drilling into materials that produce electrically conductive dust (e.g. magnesium) is not permissible.
Dry drilling is not permissible.

Equipment required for various applications / drilling directions

Application	Drilling direction	Equipment
Hand-held use	Horizontal and in a downwards direction	With/without vacuum cleaner, without spray guard
Hand-held use	In an upwards direction	With vacuum cleaner and spray guard
Mounted on a drill stand, fastened with the vacuum base plate	Downwards	With/without vacuum cleaner, without spray guard
Mounted on the drill stand, fastened with the vacuum base plate	Horizontal	With/without vacuum cleaner, without spray guard and with the drill stand secured additionally
Mounted on the drill stand, fastened with an anchor	Downwards and horizontal	With/without vacuum cleaner, without spray guard

LED display / operating status	Service status
Lights red / the machine runs.	The carbon brushes are badly worn. When the indicator lights for the first time the machine may continue to be used for several hours until it switches itself off automatically. Have the carbon brushes changed in good time so that the machine is always ready for use.
Lights red / the machine doesn’t run.	Have the carbon brushes replaced.
Blinks red	Temporary fault, see “Troubleshooting”

LED display	Contact pressure
Orange	Too low
Green	Optimal
Red	Too high

The machine has two speeds: low speed for starting holes and high speed for normal drilling.
When the control switch is pressed only half way, only the low-speed hole-starting mode is active. The water flow rate should also be set while the machine is running at this speed. Maximum drilling speed for the selected speed setting will be reached when the control switch is pressed in all the way.

machine with side handle, chuck and operating instructions
You can find other system products approved for use with your product at your local Hilti Center or online at: www.hilti.group .

Designation	Designation
Diamond core bit	DD‑C
Core breaking tool	DD‑CB

Designation	Designation
Drill stand	DD‑ST 30
Core bits	DD-C, 8 ‒ 35 mm diameter
Accessory set for fastening the drill stand with an anchor	DD M12 S
Depth gauge for the drill stand	DD-ST 30-ES
Spray guard	DD-30-W-CV

Technical data

When powered by a generator or transformer, the generator or transformer’s power output must be at least twice the rated input power shown on the rating plate of the machine. The operating voltage of the transformer or generator must always be within +5% and -15% of the rated voltage of the machine.
The information given applies to a rated voltage of 120 V. The data may vary in the event of deviations from the rated voltage and for country-specific versions. Please refer to the machine’s type identification plate for details of its voltage, frequency, current and input power ratings.

Weight	16.8 lb (7.6 kg)
Core bit diameter	0.3 in … 1.4 in (8 mm … 35 mm)
Protection class	I
Rated speed under no load	9,200 /min

Rated voltage

Rated voltage	120 V
Mains frequency [Hz]	60
Rated current [A]	15,0

Preparations at the workplace

The machine should remain disconnected from the electric supply while it is being set up or prepared for use.

WARNING

Drilling presents a possible risk of structural damage to the building. Drilling work on buildings and other structures may influence the statics of the structure, especially when steel reinforcing bars or load-bearing components are cut through.

Approval must be obtained from the site engineer or architect prior to beginning drilling work.

WARNING

Danger of electric shock! Drilling inadvertently into electric cables or gas and water pipes presents a risk of accident. Exterior metal parts of the drilling system may become live if an electric cable is contacted while drilling.

Use a metal detector, for example, to check for electric cables or gas and water pipes in the working area before beginning drilling.

Obtain permission from the structural engineer responsible before drilling through reinforcing bars.
Check that the electric supply voltage complies with the details given on the type identification plate.
Disconnect the supply cord plug from the power outlet before relocating the machine, e.g. before moving the machine to the next drilling position.
Always position the supply cord and hoses so that they do not come into contact with rotating parts of the equipment.
Do not lift the diamond core drilling machine and/or the drill stand by crane.
Before using a vacuum pump, make yourself familiar with the content of the operating instructions and observe the directions given.
Make sure that the pointer on the pressure gauge remains within the green area while drilling is taking place.
Check that the rim (cutting edge) of the core bit has a height of at least 2 mm. If this is not the case, replace the core bit as it may otherwise get stuck in the hole drilled.
To avoid injury, use only genuine Hilti DD-C core bits and DD 30-W accessories.

Positioning the side handle

Unplug the supply cord from the power outlet.
Release the side handle clamping band by turning the handle counterclockwise.
Secure the side handle in the desired position.

A depth gauge can be fitted together with the side handle ().
Fasten the side handle securely by turning the grip until tight.

Fitting the depth gauge

Unplug the supply cord from the power outlet.
Release the side handle clamping band by turning the handle counterclockwise.
Slide the depth gauge from the front into the opening provided in the side handle.
Set the depth gauge to the desired depth.
Secure the depth gauge by turning the grip of the side handle until tight.

Fitting the spray guard

WARNING

Risk of electric shock! If the machine is used for hand-guided drilling in an upwards direction without the necessary safety precautions, water may enter the machine and present a risk of electric shock.

When carrying out hand-guided drilling in an upwards direction, always use a water collection system with a wet/dry industrial vacuum cleaner and the spray guard.

Disconnect the supply cord plug from the power outlet.
Slide the spray guard over the chuck from the front and push it onto the gear housing on the drilling machine.

Fitting the water collector holder

Drilling is permissible only under the following conditions:
The supplied water collector holder is fitted and adjusted to match the length of the core bit used.
A core bit sealing ring that matches the diameter of the core bit must be fitted in the water collector holder.

Unplug the supply cord from the power outlet.
Push the water collector holder into the opening provided at the front of the machine until it engages with a click.
Use the slider to set the correct length range for the core bit used. Set the slider to the 150 position for core bits with a length of up to 150 mm and set it to 300 for core bits with a length of 300 mm or 600 mm.

Fitting or replacing the sealing ring

WARNING

Danger of electric shock! Use of the wrong sealing ring when drilling overhead may cause water to find its way into the interior of the diamond core drilling machine.

Always use a sealing ring of the same diameter as the core bit.

Disconnect the supply cord plug from the power outlet.
Fit the sealing ring into the groove in the water collector and push the sealing ring down until it is heard to engage.
To remove the sealing ring, turn it counterclockwise and pull it up out of the water collector.

Fitting the core bit

WARNING

Risk of injury caused by flying fragments or debris. Use of cracked, broken or badly worn core bits may result in flying fragments (parts of the workpiece or broken core bit) presenting a risk of injury to the operator or bystanders, even outside the working area.

Check the core bit for cracks, breakage, heavy wear or other damage each time before use and replace the core bit if necessary.

Diamond core bits must be replaced when the cutting performance and/or rate of drilling progress drops significantly. This generally is the case when the segments reach a height of less than 2 mm.

Spraying the chuck with Hilti lubricant spray at regular intervals makes it easier to fit the core bit.

Unplug the supply cord from the power outlet.
Open the chuck by pulling the chuck locking lever upwards as far as it will go.

Check that the core bit connection end and the chuck are clean and undamaged.
Tip the water collector about its mounting axis as far as it will go.
Guide the cutting edge of the core bit into the sealing ring in the water collector from above.
Align the connection end of the core bit with the corresponding openings and insert it into the chuck.
Turn the core bit as far as it will go while applying light pressure.
Secure the core bit by closing the chuck locking lever.

Connecting the vacuum removal system

Make sure that the suction hose from the all-purpose vacuum cleaner is securely connected to the core drilling machine’s water collection hose. Use a hose adapter for this purpose.
Connect the all-purpose vacuum cleaner suction hose to the vacuum cleaner.
When drilling overhead, use the retaining clip on the side handle to secure the water collection hose.

WARNING

Risk of injury! The drill stand can rotate or topple if not securely fastened.

Before using the diamond core drilling machine, secure the drill stand to the work surface with anchors or with a vacuum base plate.

Use only anchors suitable for the base material and comply with the anchor manufacturer's instructions.

Use a vacuum base plate only when the work surface is suitable for securing the drill stand by the vacuum method.

The drill stand and the machine can be fastened either using the vacuum base plate or the DD M12 S accessory set, i.e. using an HKD-D M12x50 anchor, the DD-LR-CLS clamping spindle and the DD-LR-CLN nut.

WARNING

Water running out presents a risk of electric shock! The spray guard cannot be used when the machine is mounted on the drill stand. The machine is therefore not protected against entry of water when mounted on the drill stand.

Never drill in an upwards direction with the machine mounted on the drill stand!

The side handle and spray guard (if fitted) must be removed before using the machine on the drill stand.