HILTI 500-A22 Cordless Brushless Angle Grinder Instruction Manual

: June 17, 2024
: HILTI

HILTI 500-A22 Cordless Brushless Angle Grinder

HILTI-500-A22-Cordless-Brushless-Angle-Grinder-product

Information about the documentation

About this documentation

Read this documentation before initial operation or use. This is a 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 may occur when handling or using the product. The following signal words are used in combination with a symbol:

DANGER! Draws attention to an imminent hazard that will lead to serious personal injury or fatality.
WARNING! Draws attention to a potential hazard that could lead to serious personal injury or fatality.
CAUTION! Draws attention to a potentially dangerous situation that could lead to minor personal injury or material damage.

Symbols in the documentation
The following symbols are used in this document:

HILTI-500-A22-Cordless-Brushless-Angle-Grinder-fig-20

Symbols in the illustrations

The following symbols are used in illustrations:

HILTI-500-A22-Cordless-Brushless-Angle-Grinder-fig-21

Product-dependent symbols

Symbols on the product
The following symbols are used on the product: HILTI-500-A22-Cordless-
Brushless-Angle-Grinder-fig-22

Product information

Hilti products are designed for professional use and may be operated, serviced and maintained only by trained, authorized personnel. This personnel must be informed of any particular hazards that may be encountered. The product and its ancillary equipment may present hazards when used incorrectly by untrained personnel or when used not as directed. The type designation and serial number are printed on the type identification 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

HILTI-500-A22-Cordless-Brushless-Angle-Grinder-fig-1

Safety

Safety instructions

General safety precautions for power tools

WARNING! Read all safety precautions and other instructions. Failure to observe the safety precautions and other instructions may result in electric shock, fire and/or serious injury. Keep all safety precautions and instructions for future reference.

Working area safety

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

Electrical safety

Do not expose the power tool to rain or wet conditions. Water entering a power tool will increase the risk of electric shock.
Do not allow your body to come into contact with grounded surfaces such as pipes, radiators, ovens and refrigerators. There is an increased risk of electric shock if your body is grounded.

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 the power tool may result in serious personal injury.
Adopt the correct posture when working. Maintain proper footing and balance at all times. This will allow you to control the power tool better, even in unexpected situations.
Wear your protective equipment and always wear protective glasses. Depending on the type of power tool you are using and its purpose, wearing safety equipment such as a dust mask, slip-resistant safety shoes, a hard hat or hearing protection will reduce the risk of injury.
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 may be caught in moving parts.
Avoid starting the tool accidentally. Make sure that the power tool is switched off before connecting it to the battery and before picking it up or carrying it. Carrying power tools with your finger on the switch or plugging in power tools that are already switched on may cause accidents.
Remove accessory tools or wrenches before switching the power tool on. An accessory tool or a wrench left attached to a rotating part of the power tool may cause personal injury.
If devices are provided for connecting dust extraction and collection equipment, make sure these are connected and used correctly. The use of a dust extraction system can reduce dust-related hazards.

Using and handling the power tool

Do not overload the tool. Use the correct power tool for your application. The correct power tool will do the job better and more safely within the performance range for which it is designed.
Do not use a power tool if it has a faulty on/off switch. Any power tool that cannot be controlled with the switch is dangerous and must be repaired.
Remove the battery from the power tool before making any adjustments, changing accessories or storing the tool. This precaution reduces the risk of the power tool starting accidentally.
Store power tools out of reach of children when not in use. Do not allow persons who are not familiar with the tool or these instructions to operate it. Power tools are dangerous in the hands of untrained users.
Maintain power tools properly. Check that moving parts are in correct working order and do not jam, and check whether any parts are broken or so damaged that correct operation of the power tool cannot be guaranteed. If any parts are damaged, have these parts repaired before using the tool. Many accidents are caused by poorly maintained power tools.
Keep cutting tools sharp and clean. Properly maintained tools with sharp cutting edges are less likely to jam and are easier to control.

Using and handling the cordless power tool

Use only the specified batteries in the power tools. Use of any other batteries may present a risk of injury and fire.
Recharge the batteries only with the chargers specified by the manufacturer. A charger that is suitable for a certain type of battery may present a risk of fire when used with other types of battery.
When the battery is not in use, keep it away from other metal objects such as paper clips, coins, keys, nails, screws, or other small metal objects that could cause bridging between the terminals. A short circuit between the battery terminals may cause burns or a fire.
Liquid may leak from the battery if used incorrectly. Avoid contact with this liquid. Liquid leaking from the battery may cause skin irritation or burns. If contact accidentally occurs, rinse with water. Seek medical attention if the liquid comes into contact with the eyes.

Common safety instructions for grinding, polishing and working with wire brushes

This power tool is intended for use as a grinder, wire brush, or cut-off tool. Observe all safety warnings, instructions, illustrations and specifications provided with this tool. Failure to follow all instructions listed below can result in electric shock, fire and/or serious injury.
This power tool is not suitable for use as a sander or polisher. Use of the power tool for purposes for which it is not intended may be hazardous and cause injury.
Do not use accessories not specifically intended and recommended for this power tool by the tool manufacturer. The fact that an accessory can be attached to your power tool does not necessarily mean that it can be used in safety.
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.
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.
Accessory tools with threaded insert must match the thread of the drive spindle. Flange-mounted accessory tools must have a hole diameter matching the mandrel diameter of the flange. Accessory tools not correctly fixed to the power tool rotate unevenly, vibrate excessively and can cause control of the tool to be lost.
Do not use damaged accessory tools. Always check accessory tools before use. Check abrasive wheels for chipping and cracks. Check grinding discs for cracks and heavy wear and tear, and check wire brushes for loose or broken wires.
If power tool or accessory is dropped, inspect for damage or install an undamaged accessory. After inspecting and installing an accessory tool, position yourself and bystanders away from the plane of the rotating tool and run the power tool at maximum no-load speed for one minute. If an accessory tool has been damaged it will normally 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 a dust mask, ear defenders, protective gloves or a workshop apron to keep off abrasive particles and particles of workpiece material. Make sure your eyes are protected against the flying debris created by various machining operations. The dust mask or respirator must be capable of filtrating particles generated by your operation. Prolonged exposure to high-intensity noise may cause hearing loss.
Keep bystanders a safe distance away from work area. Anyone entering the work area must wear personal protective equipment. Fragments of workpieces or of a broken accessory may fly away and cause injury beyond the immediate area of operation.
Hold the power tool by the insulated gripping surfaces only, when carrying out work in which the accessory tool can come into contact with concealed wiring. If the accessory tool comes into contact with a live wire, metal parts of the power tool can also become live, causing the operator to receive an electric shock.
Never lay the power tool down before the accessory tool has come to a complete stop. If the rotating accessory tool were allowed to touch the surface on which you are going to place the power tool, you could lose control of the power tool.
Never start the power tool while carrying it around. Your clothing could be snagged by the rotating accessory tool, pulling the accessory tool into your body.
Clean the ventilation slots of 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

WARNING! Snagging or jamming brings the rotating accessory tool to an abrupt stop. If this happens the power tool whips round in the direction opposite to the accessory tool’s direction of rotation, the grinding disc can catch and break out or cause a kickback. By adopting suitable precautionary measures the operator can control the kickback and reaction forces:

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.
Always keep your hand well clear of the rotating accessory tool. Kickback could cause the accessory tool to pass across your hand.
Keep your body clear of where the power tool will move if kickback occurs. 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 evinces 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 attach a saw chain, woodcarving blade or toothed saw blade. Such blades create frequent kickback and loss of control.

Safety instructions for grinding and abrasive cutting:

Use only abrasive wheel types approved for your power tool and the specific guard designed for the selected wheel. Wheels for which the power tool was not designed cannot be adequately guarded and are unsafe.
Offset grinding discs must be fitted in such a way that their grinding face does not project past the plane of the guard edge. An incorrectly fitted grinding disc projecting past the plant of the guard edge cannot be adequately shielded.
The guard must be securely attached to the power tool and positioned for maximum safety, so that the smallest possible segment of the abrasive disc is exposed toward the operator. The guard helps protect the operator from flying fragments, accidental contact with the abrasive disc, and flying sparks that could ignite clothing.
Use abrasive discs for the recommended applications only.
Never try to use the flat of an abrasive cut-off wheel for grinding. Abrasive cut-off wheels are intended for peripheral grinding. Side forces applied to these wheels can cause them to shatter.
Always use an undamaged clamping flange of the correct size and shape for your selected grinding disc. The correct flange supports the grinding disc, reducing the risk of disc breakage. Flanges for cut-off wheels can differ from those for other grinding discs.
Do not use worn-down, originally larger-diameter grinding discs from larger power tools. Grinding discs intended for a larger power tool are not suitable for the higher speed of a smaller tool and can break.

Safety instructions for abrasive cutting

Do not “bind” the cut-off wheel or apply excessive pressure. Do not attempt to make an excessive depth of cut. Overstressing the wheel increases the loading and susceptibility to twisting or binding of the wheel in the cut and the possibility of kickback or wheel breakage.
Keep clear of the areas in front of and behind the rotating cut-off wheel. When the wheel, at the point of operation, is moving away from your body, the possible kickback may propel the spinning wheel and the power tool directly at you.
If the wheel binds or when you interrupt 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 rotating cut off-wheel from the cut, because kickback can occur. Investigate and take corrective action to eliminate the cause of wheel binding.
Do not switch the power tool on again while the wheel is in the cut. Let the 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 cut.
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 cutting wheel, both close to the line of cut and near the edge of the workpiece.
Use extra caution when “plunge cutting” into existing walls or other blind areas. Kickback can occur if the wheel slices into gas or water pipes, electric wiring or other objects as it plunge-cuts.

Safety instructions for wire brushing:

Be aware that wire bristles are thrown by the brush even during ordinary operation. Do not overload the wires by applying excessive pressure. The wire bristles can easily penetrate light clothing and/or the skin.
If the use of a guard is recommended for wire brushing, do not allow any interference of the wire wheel or brush with the guard. Wire wheel or brush may expand in diameter due to work load and centrifugal forces.

Additional safety instructions

Personal safety

Only use the product if it is in perfect working order.
Never tamper with or modify the tool in any way.
Avoid touching rotating parts – risk of injury!
Wear protective gloves also when changing the accessory tool. Touching the accessory tool presents a risk of injury (cuts or burns).
Before starting work, check the hazard class of the dust that will be produced when working. Use an industrial vacuum cleaner with an officially approved protection class in compliance with the locally applicable dust protection regulations. Dust from materials such as lead-based paint, certain types of wood and concrete/masonry/stone containing quartz, minerals or metal may be harmful to health.
Make sure that the workplace is well ventilated and, where necessary, wear a respirator appropriate for the type of dust generated. Contact with or inhalation of the dust may cause allergic reactions and/or respiratory or other diseases among operators or bystanders. Certain kinds of dust are classified as carcinogenic such as oak and beech dust, especially in conjunction with additives for wood conditioning (chromate, wood preservative). Material containing asbestos may be handled only by specialists.
Take breaks between working and do physical exercises to improve the blood circulation in your fingers. Exposure to vibration during long periods of work can lead to disorders of the blood vessels and nervous system in the fingers, hands and wrists.

Electrical safety

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

Using and handling power tools with care

Do not use cutting discs for grinding.
Tighten the accessory tool and flange securely. If the accessory tool and flange are not tightened securely, the accessory tool may work loose from the spindle due to the braking effect of the motor after switching off.
Comply with the manufacturer’s instructions for handling and storing grinding discs.

Careful handling and use of batteries

Observe the special guidelines applicable to the transport, storage and use of lithium-ion batteries.
Do not expose batteries to high temperatures, direct sunlight or fire.
Do not take apart, squash or incinerate batteries and do not subject them to temperatures over 80 °C.
Do not attempt to charge or continue to use damaged batteries.
If the battery is too hot to touch, it may be defective. In this case, place the power tool in a non-flammable location, well away from flammable materials, where it can be kept under observation and left to cool down. Contact Hilti Service after the battery has cooled down.

Description

Overview of the product

HILTI-500-A22-Cordless-Brushless-Angle-Grinder-fig-2

Guard release button
Spindle lockbutton
Air vents
Release button with additional function (charge status display activation)
Battery
Switch-on interlock release button
On/off switch
Vibration-absorbing side handle
Spindle
Standard guard
Clamping flange
Cutting disc / grinding disc
Clamping nut
Kwik lock clamping nut (optional)
Wrench

Intended use
The product described is a hand-held cordless angle grinder. It is designed to be used for cutting and grinding metals and mineral materials, and for wire brushing without the use of water. It can be used only for dry grinding/cutting.

The power tool may be used for cutting, slitting and grinding mineral materials only when equipped with the corresponding guard (optional accessory).
A dust removal hood together with a suitable Hilti vacuum cleaner must be used for working on mineral materials such as concrete or stone.
Use only Hilti Liion batteries of the B 22 series with this product.
Use only Hilti battery chargers of the C4/36 series for charging these batteries.

Items supplied
Angle grinder, side handle, standard guard, front cover, clamping flange, clamping nut, wrench, and operating instructions. You can find other system products approved for your product at your local Hilti Center or online at: www.hilti.com

Temperature-dependent motor protection
The temperature-dependent motor protection system monitors current input and motor temperature and thus prevents the power tool from overheating. If the motor is overloaded through the application of excessive working pressure, the power tool’s performance drops noticeably or it may stall completely. If the power tool stalls or slows significantly due to overloading, release the pressure applied to the tool and then allow it to run under no load for approx. 30 seconds.

Guard with front cover

When grinding with straight grinding discs and cutting with cutting discs in metalworking applications, use the standard guard with front cover.

DC-EX 125/5″C compact dust hood for cutting (accessory)

When cutting mineral materials with diamond cutting discs, use the DC-EX 125/5″ C compact hood.

CAUTION Use of this hood for working on metal is prohibited.

DG-EX 125/5″ dust hood for grinding (accessory)

The grinding system is suitable only for occasional use with diamond cup wheels for grinding mineral materials. CAUTION Use of this hood for working on metal is prohibited.

Li-ion battery charge status display
The charge status of the Liion battery is displayed after one of the two battery release buttons is pressed. HILTI-500-A22-Cordless-Brushless-Angle-
Grinder-fig-6

Note
Indication of the charge status is not possible while the power tool is in operation or immediately after operation. If the battery charge status LEDs blink, please refer to the information given in the Troubleshooting section.

Consumables

Only synthetic resin-bonded, fiber-reinforced discs with a maximum Ø of 5″ which are approved for use at a rotational speed of at least 11000/min and a peripheral speed of 80 m/s may be used. The maximum grinding disc thickness is 1/4″ and the maximum cutting disc thickness is 1/8″.

WARNING! When cutting or slitting with abrasive cutting discs always use the standard guard with the additional front cover, or a fully enclosing dust hood.

Discs

HILTI-500-A22-Cordless-Brushless-Angle-Grinder-fig-7

Suitability of discs for the equipment used

HILTI-500-A22-Cordless-Brushless-Angle-Grinder-fig-8

Technical data

Angle grinder

HILTI-500-A22-Cordless-Brushless-Angle-Grinder-fig-9

Before use

Inserting the battery

CAUTION
Risk of injury. Due to the angle grinder starting unintentionally.

Before fitting the battery, check that the angle grinder is switched off and that the safety lock is activated.

CAUTION
Electrical hazard. Dirty contacts may cause a short circuit.

Before inserting the battery, check to ensure that the battery terminals and the contacts in the angle grinder are free from foreign objects.

CAUTION
Risk of injury. If the battery is not fitted correctly it may drop out and fall.

Check that the battery is securely seated in the tool so that it cannot drop out and fall, thereby presenting a hazard to other persons.
Fit the battery and check that the battery is securely seated in the power tool.

Removing the battery

HILTI-500-A22-Cordless-Brushless-Angle-Grinder-fig-12

Remove the battery.

Fitting the side handle

Screw the side handle into one of the threaded bushings provided.

Fitting or removing the guard

CAUTION Risk of injury. The accessory tool may be hot or have sharp edges.

Wear protective gloves when fitting, removing or adjusting the accessory tool or other parts and when troubleshooting.
Observe the instructions for fitting the applicable guard.

Fitting the guard

Note
The guard is equipped with locating lugs that ensure only guards of a type suitable for use with the power tool can be fitted. The locating lugs of the guard fit into the guard mount on the power tool. HILTI-500-A22-Cordless-
Brushless-Angle-Grinder-fig-13

Fit the guard onto the drive spindle collar so that the two triangular marks on the guard and on the power tool are in alignment.
Press the guard onto the drive spindle collar.
Press the guard release button.
Rotate the guard until it engages and the guard release button jumps back into its original position.

Adjusting the guard

Press the guard release button and then rotate the guard until it engages in the desired position.

Removing the hood

Press the guard release button and then rotate the guard until the triangular marks on the guard and the power tool are in alignment.
Remove the guard.

Fitting or removing the front cover

Note
The front cover, when used, is clipped onto the guard. HILTI-500-A22
-Cordless-Brushless-Angle-Grinder-fig-14

Position the front cover with the closed side on the standard guard and push it on until it engages.
To remove it, release the catch for the front cover and then lift the front cover away from the standard guard.

Positioning the DC-EX 125/5″C dust hood (for cutting)

HILTI-500-A22-Cordless-Brushless-Angle-Grinder-fig-15

Position the compact guard so that the on/off switch remains easily accessible and operable at all times.

Fitting and removing accessory tools

WARNING
Risk of injury. The accessory tool may work loose due to the braking effect of the motor.

Wait until the accessory tool has come to a standstill before touching or gripping the accessory tool or the clamping nut.
Secure the accessory tool by tightening the clamping flange and clamping nut firmly so that no parts work loose from the spindle due to the braking effect of the motor.

CAUTION
Risk of injury. The accessory tool may be hot.

Wear protective gloves when changing the accessory tool.

CAUTION
Danger if accessory tool with integrated thread works loose! Incorrect installation of the accessory tool can result in serious injury.

Always tighten the accessory tool with integrated thread until it is hand-tight.

Note
Diamond discs must be replaced when their cutting or grinding performance drops significantly. This generally is the case when the segments reach a height of less than 1/16″. Other discs must be replaced when their cutting performance drops significantly or other parts of the angle grinder (not the disc) come into contact with the material you are working on. Abrasive discs must be replaced when their expiry date has been reached.

Fitting an accessory tool

HILTI-500-A22-Cordless-Brushless-Angle-Grinder-fig-16

Remove the battery.
Clean the clamping flange and the clamping nut.
Fit the clamping flange onto the drive spindle.
Fit the accessory tool.
Screw on the clamping nut corresponding to the type of accessory tool fitted.
Press the spindle lockbutton and hold it in this position.
Use the pin wrench to tighten the clamping nut securely, then release the spindle lockbutton and remove the wrench.

Removing the accessory tool

Remove the battery.
CAUTION
Risk of breakage and irreparable damage. If the spindle lockbutton is pressed while the spindle is rotating, this may cause the accessory tool to work loose or detach from the power tool.
- Press the spindle lockbutton only when the spindle has stopped rotating.
Press the spindle lockbutton and hold it in this position.
Release the clamping nut by gripping it with the wrench and turning the nut counterclockwise.
Release the spindle lockbutton and remove the accessory tool.

Fitting an accessory tool secured with a Kwik lock nut

CAUTION
Risk of breakage. Heavy wear (abrasion) may cause the Kwik lock nut to break.

When working with the power tool, make sure that the Kwik lock nut doesn’t come into contact with the working surface.
Do not use a damaged Kwik lock nut.

Note
The optional Kwik lock nut can be used instead of the standard clamping nut. Accessory tools (discs etc.) can then be changed without need for additional tools (keyless system). HILTI-500-A22-Cordless-Brushless-Angle-Grinder-
fig-17

Remove the battery. → page 13
Clean the clamping flange and the quick-release clamping nut.
Fit the clamping flange onto the drive spindle.
Fit the accessory tool.
Screw on the Kwik lock nut until it is seated against the accessory tool.
- The name Kwik lock should be visible when the nut is screwed on.
Press the spindle lockbutton and hold it in this position.
Turn the accessory tool firmly by hand in a clockwise direction until the Kwik lock nut is tightened securely and then release the spindle lockbutton.

Removing an accessory tool secured with a Kwik lock nut

Remove the battery. → page 13
CAUTION
Risk of breakage and irreparable damage. If the spindle lockbutton is pressed while the spindle is
rotating, this may cause the accessory tool to work loose or detach from the power tool.
- Press the spindle lockbutton only when the spindle has stopped rotating.
Press the spindle lockbutton and hold it in this position.
Release the Kwik lock nut by turning it counterclockwise by hand.
If the Kwik lock nut cannot be released by turning it by hand, use a pin wrench to turn the nut in a counterclockwise direction.
Note
Never use a pipe wrench! A pipe wrench could damage the Kwik lock nut.
Release the spindle lockbutton and remove the accessory tool.

Fitting a threaded accessory tool

Remove the battery. → page 13
Screw the accessory tool onto the drive spindle.
Press the spindle lockbutton and hold it in this position.
Use an open-end wrench to tighten the accessory tool securely and then release the spindle lockbutton.

Removing a threaded accessory tool

Remove the battery.
CAUTION
Risk of breakage and irreparable damage. If the spindle lockbutton is pressed while the spindle is rotating, this may cause the accessory tool to work loose or detach from the power tool.
- Press the spindle lockbutton only when the spindle has stopped rotating.
Press the spindle lockbutton and hold it in this position.
Use an open-end wrench to release the accessory tool.
Release the spindle lockbutton and remove the accessory tool.

Operation

Grinding

CAUTION Risk of injury. The accessory tool may suddenly stick or stall.

Use the power tool with the side handle (or optional hoop grip) fitted and always hold the power tool securely with both hands.

Cutting

When cutting, apply moderate feed pressure and do not tilt the power tool or the cutting disc (when working, hold at approx. 90° to the surface being cut).

Note
For best results when cutting profiles and square tubes, start cutting at the smallest cross-section.

Rough grinding

CAUTION
Risk of injury. The abrasive cutting disc could shatter and flying fragments may cause injury.

Never use abrasive cutting discs for grinding.
Move the power tool to and fro while maintaining a 5° to 30° angle of attack and applying moderate pressure.
This will avoid overheating and discolouration of the workpiece and help ensure an even surface finish.

Switching on (tool equipped with switch-on safety interlock)

Note
The on / off switch with safety lock (switch-on interlock) gives you full control of the switch function and avoids unintentional starting.

Push the safety lock forward.
- The on/off switch is unlocked.
Press the on/off switch as far as it will go.
- The power tool’s motor runs at no-load speed.

Switching off (tool equipped with switch-on safety interlock)

Release the on/off switch.
- The safety lock jumps automatically into the locked position.

Care and maintenance of cordless tools

WARNING
Danger of electric shock! Carrying out care and maintenance while the battery is fitted presents a risk of serious physical injury and burning injury.

Always remove the battery before carrying out all care and maintenance tasks.

Care and maintenance of the tool

Carefully remove any dirt that may be adhering to parts.
Clean the air vents carefully with a dry brush.
Use only a slightly damp cloth to clean the casing. Do not use cleaning agents containing silicone as these may attack the plastic parts.

Care of the lithiumion 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 may 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 cordless tool if signs of damage are found or if parts malfunction. Have the tool repaired by Hilti Service immediately.
After cleaning and maintenance, fit all guards or protective devices and check that they function correctly.

Note
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 Center or online at: www.hilti.com

Transport and storage of cordless tools

Transport

CAUTION
Inadvertent starting during transport. Uncontrolled starting during transport may occur if the battery is fitted, thereby resulting in damage to the tool.

Always remove the battery before transporting the tool.
Remove the battery.
Transport the tool and batteries individually packaged.
Never transport batteries in bulk form (loose, unprotected).
Check the tool and batteries for damage before use after long periods of transport.

Storage

CAUTION
Inadvertent damage caused by defective battery. A leaking battery may damage the tool.

Always remove the battery before storing the tool.
Store the tool and batteries in a place that is as cool and dry as possible.
Never store batteries in direct sunlight, on heating units or behind a window pane.
Store the tool and batteries in a place where they cannot be accessed by children or unauthorized persons.
Check the tool and batteries for damage before use after long periods of storage.

Troubleshooting

If the trouble you are experiencing isn’t listed in this table or you are unable to remedy the problem by yourself, please contact Hilti Service. HILTI-500-A22-Cordless-Brushless-Angle-Grinder-
fig-19

Disposal

WARNING
Risk of injury. Hazards presented by improper disposal.

Improper disposal of the equipment may have the following consequences: The burning of plastic components generates toxic fumes which may present a health hazard. Batteries may explode if damaged or exposed to very high temperatures, causing poisoning, burns, acid burns or environmental pollution. Careless disposal may permit unauthorized and improper use of the equipment. This may result in serious personal injury, injury to third parties and pollution of the environment.
Dispose of defective batteries right away. Keep them out of reach of children. Do not disassemble or incinerate the batteries.
Batteries that have reached the end of their life must be disposed of per national regulations or returned to Hilti.

Most of the materials from which Hilti tools and appliances are manufactured can be recycled. The materials must be correctly separated before they can be recycled. In many countries, your old tools, machines or appliances can be returned to Hilti for recycling. Ask Hilti Service or your Hilti representative for further information.