metabo W 18 LTX 115 Quick Cordless Angle Grinder Instruction Manual

metabo W 18 LTX 115 Quick Cordless Angle Grinder

Assembling and Parts Description

Declaration of Conformity

We declare in our sole responsibility. These angle grinders, identified by type and serial number comply with all relevant requirements of the directives and standards Technical

Specified Use

The cordless angle grinders, when fitted with original Metabo accessories, are suitable for grinding, sanding, cutting-off and wire brushing metal, concrete, stone and similar materials without the use of water. The user bears sole responsibility for any damage caused by improper use. Generally accepted accident prevention regulations and the enclosed safety information must be observed.

General Safety Instructions

For your own protection and for the protection of your electrical tool, pay attention to all parts of the text that are marked with this symbol

WARNING
Failure to follow all safety warn-ings and instructions may result in electric shock, fire and/or serious injury. Keep all safety instructions and information for future reference. Pass on your electrical tool only together with these documents.

Special Safety Instructions

Safety Warnings Common for Grinding, Sanding,

Wire Brushing or Abrasive Cutting-Off Operations

• This power tool is intended to function as a grinder, sander, wire brush or cut off tool.

• Failure to follow all instructions listed below may result in electric shock, fire and/or serious injury.

• Operations such as polishing are not recommended to be performed with this power tool.

• Operations for which the power tool was not designed may create a hazard and cause personal injury.

• Do not use accessories which are not specifically designed and recommended by the tool manufacturer. Just because the accessory can be attached to your power tool, it does not assure safe operation.

• 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 break and fly apart.

• The outside diameter and the thickness of your accessory must be within the capacit rating of your power tool. Incorrectly sized
  accessories cannot be adequately guarded or controlled.

• Threaded mounting of accessories must match the grinder spindle thread.

• For accessories mounted by flanges, the arbor hole of the accessory must fit the locating diameter of the flange.

• Accessories that do not match the mounting hardware of the power tool will run out of balance,
  vibrate excessively and may cause loss of control.

• Do not use a damaged accessory. Before each use inspect the accessory such as abrasive wheels for chips and cracks, backing pad for cracks, tear or excess wear, wire brush for loose or cracked wires.

• If a power tool o accessory is dropped, inspect for damage or install an undamaged accessory.

• After inspecting and installing an accessory, position yourself and bystanders away from the plane of the rotating accessory and run the power tool at maximum no-load speed for one minute.

• Damaged accessories will normally break apart during this test time.

• Wear personal protective equipment.

• Depending on application, use face shield, safety goggles or safety glasses.

• A appropriate, wear dust mask, hearing protectors, gloves and workshop apron capable of stopping small abrasive or workpiece fragments.

• The eye protection must be capable of stopping flying debris generated by various operations.

• The dust mask or respirator must be capable of filtering 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 workpiece or of a broken accessory may fly away and cause injury beyond immediate area of operation.

• Hold power tool by insulated gripping surfaces only, 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 shock the operator.

•  Position the cord clear of the spinning accessory.

• If you lose control, the cord may be cut or snagged and your hand or arm may be pulled into the spinning accessory.

• Never lay the power tool down until the accessory has come to a complete stop.

• The spinning accessory may grab the surface and pull the power tool out of your control.

•  Do not run the power tool while carrying it at your side.

• Accidental contact with the spinning accessory could snag your clothing, pulling the accessory into your body.

• Regularly clean the power tool’s air vents.

• The motor’s fan will draw the dust inside the housing and excessive accumulation of powdered metal may cause electrical hazards.

• Do not operate the power tool near flammable materials. Sparks could ignite these materials.

• Do not use accessories that require liquid coolants. Using water or other liquid coolants may result in electrocution or shock.

Kickback and Related Warnings

Kickback is a sudden reaction to a pinched or snagged rotating wheel, backing pad, brush or any other accessory. Pinching or snagging causes rapid stalling of the rotating accessory which in turn causes the uncontrolled power tool to be forced in the direction opposite of the accessory’s rotation at the point of the binding. For example, if an abrasive wheel is snagged or pinched by the workpiece, the edge of the wheel that is entering into the pinch point can dig into the surface of the material causing the wheel to climb out or kick out. The wheel may either jump toward or away from the operator, depending on direction o the wheel’s movement at the point of pinching. Abrasive wheels may also break under these conditions.

• Kickback is the result of power tool misuse and/or incorrect operating procedures or conditions and can be avoided by taking proper precautions as given below.
•  Maintain a firm grip on the power tool and position your body and arm to allow you to resist kickback forces.
• Always use auxiliary handle, if provided, for maximum control over.
• kickback or torque reaction during start up.
• The operator can control torque reactions or kickback forces, if proper precautions are taken.
• Never place your hand near the rotating accessory. Accessory may kickback over your hand.
• Do not position your body in the area where power tool will move if kickback occurs.
• Kickback will propel the tool in direction opposite to the wheel’s movement at the point of snagging.
• Use special care when working corners, sharp edges etc. Avoid bouncing and snagging the accessory.
• Corners, sharp edges or bouncing have a tendency to snag the rotating accessory and cause 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 Warnings Specific for Grinding and Cutting Off Operations

• Use only wheel types that are recommended 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.
• The grinding surface of centre depressed wheels must be mounted below the plane of the guard lip.
• An improperly mounted wheel that projects through the plane of the guard lip cannot be adequately protected.
• The guard must be securely attached to the power tool and positioned for maximum safety, so the least amount of wheel is exposed towards the operator.
• The guard helps to protect the operator from broken fragments, accidental contact with the wheel and sparks which could ignite clothing.
• Wheels must be used only for recommended applications. For example: do not grind with the side of cutoff wheel.
• Abrasive cut-off wheels are intended for peripheral grinding, side forces applied to these wheels may cause them to shatter.
• Always use undamaged wheel flanges that are of correct size and shape for your selected wheel.
• Proper wheel flanges support the wheel thus reducing the possibility of wheel breakage.
• Flanges for cut-off wheels may be different from grinding wheel flanges.
• Do not use worn down wheels from larger power tools.
• Wheels intended for larger power tools are not suitable for the higher speed of a smaller tool and may burst.

Additional Safety Warnings Specific for Abrasive Cutting Off Operations:

• Do not jam 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.

•  Do not position your body in line with and behind the rotating 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.

• When 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 wheel binding.

•  Do not restart the cutting operation in the workpiece.

• Let the wheel reach full speed and carefully reenter the cut.

• The wheel may bind, walk up or kickback if the power tool is restarted in
  the workpiece.

• Support panels or any oversized workpiece to minimize the risk of wheel pinching and kickback.

• Large workpieces tend to sag under their own weight. Supports must be placed under the workpiece near the line of cut and near the edge of the workpiece on both sides of the wheel.

• Use extra caution when making a pocket cut into existing walls or other blind areas.

• The protruding wheel may cut gas or water pipes, electrical wiring or objects that can cause kickback.

Safety Warnings Specific for Sanding Operations:

Do not use excessively oversized sanding disc paper. Follow manufacturer’s recommendations when selecting sanding paper. Larger sanding paper extending beyond the
sanding pad presents a laceration hazard and may cause snagging, tearing of the disc or kickback.

Safety Warnings Specific for Wire Brushing Operations:

Be aware that wire bristles are thrown by the brush even during ordinary operation. Do not overstress the wires by applying excessive load to the brush. The wire bristles can easily penetrate light clothing and/or 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

WARNING
Always wear protective goggles. Use elastic cushioning layers if they have been supplied with the abrasive and if required. Observe the specifications of the tool or accessory manufacturer. Protect the discs from grease or impacts. Grinding discs must be stored and handled with care in accordance with the manufacturers instructions. Never use cut-off wheels for roughing work. Do not apply pressure to the side of cut-off wheels. The workpiece must lay flat and be secured against slipping e.g. using clamps. Large workpieces must be sufficiently supported. If accessories with threaded inserts are used, the end of the spindle may not touch the base of the hole on the grinding tool. Make sure that the thread in the accessory is long enough to accommodate the full length of the spindle. The thread in the accessory must match the thread on the spindle.
Damaged, eccentric or vibrating tools must not be used. Avoid damage to gas or water pipes, electrical cables and load-bearing walls static. Remove the battery pack from the machine before any adjustments, conversions or servicing are performed. Before fitting the battery pack, make sure that the machine is switched off. Hold the machine when removing and inserting the battery back such that the on/off switch cannot be unintentionally pressed If the machine is defective, remove the battery pack from the machine. A damaged or cracked additional handle must be replaced. Never operate a machine with a defective additional handle. A damaged or cracked safety guard must be replaced. Never operate a machine with a defective safety guard. Secure small workpieces. For example, clamp in a vice. When working in dusty conditions, ensure that ventilation openings are not blocked. If it becomes necessary to remove dust, first remove the battery pack use non-metallic objects and avoid damaging internal components.

Reducing dust exposure

WARNING
Some dust created by power sanding, sawing, grinding, drilling, and other construction activities contains chemicals known to cause cancer, birth defects or other reproductive
harm. Some examples of these chemicals are Lead from lead-based paints, Crystalline silica from bricks and cement and other masonry products, and Arsenic and chromium from chemically treated lumber. Your risk from these exposures varies, depending on how often you do this type of work. To reduce your exposure to these chemicals: work in a well ventilated area, and work with approved safety equipment, such as those dust masks that are specially designed to filter out microscopic particles. This also applies to dust from other materials such as some timber types like oak or beech dust metals, asbestos. Other known diseases are e.g. allergic reactions, respiratory diseases. Do not let
dust enter the body. Observe the relevant guidelines and national regulations for your material, staff, application and place of application e.g. occupational health an safety regulations, disposal. Collect the particles generated at the source, avoid deposits in the surrounding area. Use suitable accessories for special work. In this way, fewer particles enter the environment in an uncontrolled manner. Use a suitable extraction unit. Reduce dust exposure with the following measures:  do not direct the escaping particles and the exhaust air stream at yourself or nearby persons or on dust deposits,  use an extraction unit and/or air purifier ensure good ventilation of the workplace and keep clean using a vacuum cleaner. Sweeping or blowing stirs up dust. Vacuum or wash the protective clothing. Do not blow, beat or brush.

Safety instructions for battery packs

• Protect battery packs from water and moisture.
• Do not expose battery packs to naked flame.
• Do not use faulty or deformed battery packs.
• Do not open battery packs.
• Do not touch or short circuit battery packs slightly acidic, flammable fluid may leak from defective Li-ion battery packs.
• If battery fluid leaks out and comes into contact with your skin, rinse immediately with plenty of water.
• If battery fluid leaks out and comes into contact with your eyes, wash them with clean water and seek medical attention immediately.
• Transport of li-ion battery packs:
• The shipping of li-ion battery pack is subject to laws related to the carriage of hazardous goods UN 3480 and UN 3481.
• Inform yourself of the currently valid specifications when shipping li-ion battery packs.
• If necessary, consult your freight forwarder.
• Certified packaging is available from Metabo.
• Only send the battery pack if the housing is intact and no fluid is leaking.
• Remove the battery pack from the machine for sending.
• Prevent the contacts from short-circuiting e.g. by protecting them with adhesive tape.

Overview

• 1 Clip to tighten/release the tool free clamping nut manually.
• 2 Clamping nut tool free.
• 3 Support flange.
• 4 Spindle.
• 5 Spindle locking button.
• 6 Sliding on/off switch.
• 7 Electronic signal indicator.
• 8 Battery pack release button.
• 9 Capacity indicator button.
• 10 Capacity and signal indicator.
• 11 Battery pack.
• 12 Dust filter.
• 13 Switch on lock .
• 14 Trigger.
• 15 Additional handle / Additional handle with vibration damping.
• 16 Safety cover.
• 17 Clamping nut.
• 18 2-hole spanner.
• 19 Lever for safety guard attachment depending on equipment/not in scope of delivery.

Initial Operation

Attaching the additional handle

Always work with the additional handle attached (15)! Attach the additional handle on the left or right of the machine and secure.

Install safety guard

For safety reasons, always use the safety guard provided for the respective wheel.1.
Safety guard for grinding
Designed for work with grinding wheels, flap sanding pads, diamond cut-off wheels.-

• Pull on the lever 19.
• Place the safety guard 16 in the position indicated.
• Release the lever and turn the safety guard until the lever engages.
• Pull on the 19 lever and turn the safety guard until the closed section is facing the operator.
• Make sure that the guard is seated securely: the lever must engage and you should not be able to turn the safety guard.
• Use only accessories that are covered by at least 3.4 mm by the safety guard.

Dust filter

Always fit the dust filter if the surroundings are heavily polluted (12). The machine heats up faster when the dust filter is fitted (12). It is protected by the electronics system from overheating (see chapter10.).
To fit
Attach the dust filter (12) as shown.
To remove
Holding the dust filter at the edges, raise it slightly (12) and then pull it downwards and remove.

Rotating battery pack

The rear section of the machine can be rotated 270° in three stages, thus allowing the machines shape to be adapted to the working conditions. Only operate the machine when  it is in an engaged position.

Battery pack

Charge the battery pack before use (11). If performance diminishes, recharge the battery pack. The ideal storage temperature is between 10°C and 30°C. Li- Power li-ion battery packs have a capacity and signal indicator 10 press the button 9, the LEDs indicate the charge level. If one LED is flashing, the battery pack is almost flat and must be recharged.

Removing and inserting the battery pack

Hold the machine when removing and inserting the battery back such that the on/off switch cannot be unintentionally pressed.
Removal
Press the battery pack release 8 button and pull the battery pack 11 forwards.
Inserting
Slide in the battery pack 11 until it engages.

Attaching the grinding wheel

Before carrying out any modifications: remove the battery pack from the machine. The machine must be switched off and the spindle at a standstill. For reasons of safety, attach the safety guard for cut-off grinding before performing Abrasive Cutting Off Operations.

Locking the spindle

Press in the spindle locking button 5 and turn the spindle 4 by hand until you feel the spindle locking button engage.

Placing the wheel in position

Fit the support flange (3) on the spindle. The flange should not turn on the spindle when properly attached. Place the grinding wheel on the support flange (3). The grinding wheel must lay flat on the supporting flange. The metal flange on the cut-off wheel must lay flat on the support flange.
Note
The support flange (3) is secured to prevent it from falling off. To remove: use some force if necessary

Securing/releasing the (tool-free) clamping nut (depending on features)

Only tighten the (tool-free) clamping nut (2) manually. For the machine to operate, the clip (1) must always lie flat on clamping nut 2. To secure the (tool-free) clamping nut (2):
Do not use the (tool-free) clamping nut if the accessory has a clamping shank thicker than 6 mm. In this case, use the clamping nut 17 with 2-hole spanner (18).

Lock the spindle

• Flip up the clip 1 on the clamping nut.
• Fit the clamping nut 2bon the spindle (4). See illustration on page 2.
• 1 Tighten the clamping nut on the clip manually in a clockwise direction.
• Flip down the clip 1 again.
• To release the tool free clamping nut 2.
• Lock the spindle.
• Flip up the clip (1) on the clamping nut.
• Unscrew the clamping nut (2) , turning it anticlockwise manually.

Note
If the clamping nut is very tightly secured (2), you can also use a 2-hole spanner to unscrew it.

Securing/releasing the clamping nut depending on features Securing the

clamping nut 17

The 2 sides of the clamping nut are different. Screw the clamping nut onto the spindle as follows

•  For thin grinding wheels.
• The edge of the clamping nut 17 faces upwards so that the thin grinding wheel can be attached securely.
•  For thick grinding wheels.
• The edge of the clamping nut 17 faces downwards so that the clamping nut can be attached securely to the spindle.
•  Lock the spindle. Turn the clamping nut 17 clockwise using the 2 hole spanner 18 to secure.
• Releasing the clamping nut:
• Lock the spindle turn the clamping nut 17 anticlockwise using the 2 hole spanner (18) to unscrew.

Use

Switching On and Off

Always guide the machine with both hands. Switch on first, then guide the accessory towards the workpiece. The machine must not be allowed to draw in additional dust and shavings. When switching the machine on and off, keep it away from dust deposits. After switching off the machine, only
place it down when the motor has come to a standstill. Avoid switching on the machine accidentally: always switch it off when the battery pack is
removed from the machine. In continuous operation, the machine continues running if it is forced out of your hands. Therefore, always hold the machine with both hands using the handles provided, stand in a safe position and concentrate.

Machines with slide switch

Switching on
Push the slide switch (6) forward. For continuous activation, now tilt downwards until it engages.
Switching off
Press the rear end of the slide switch (6) and release.

Machines with Paddle Switch with dead man function (machines with the

designation WP)

Switching on
Slide the switch-on lock 13 in the direction of the arrow and press the trigger 14.
Switching off
Release the trigger 14.

Working instructions

Grinding
Press down the machine evenly on the surface and move back and forth so that the surface of the workpiece does not become too hot.
Roughing position the machine at an angle of 30°-40° for the best working results.
Cutting off

Always work against the run of the disc. Otherwise there is the danger of the machine kicking back from the cut out of control. Guide the machine evenly at a speed suitable for the material being processed. Do not tilt apply excessive force or sway from side to side.

Sanding

Press down the machine evenly on the surface and move back and forth so that the surface of the workpiece does not become too hot.

Wire brushing

Press down the machine evenly.

Cleaning

Remove the battery pack from the machine before any adjustments, conversions or servicing are performed. Clean the dust filter regularly: remove and clean with a jet of compressed air. Remove the battery pack periodically and wipe the contact area of the battery pack and machine with a dry cloth and remove deposits. If the battery pack cannot be removed.

Troubleshooting

The electronic signal display (7) lights up and the load speed decreases. The temperature is too high. Run the machine in idling until the electronics signal indicator switches off. The electronic signal display (7) flashes and the machine does not start. The restart protection is active. The machine will not start if the battery pack is inserted while the machine is on. Switch the machine off and on again. Electronic safety shutdown (Machines with the designation WB WPB)The machine has SHUT DOWN by itself. If the slew rate of the current is too high for example, if the machine suddenly seizes or kickback occurs, the machine switches off. Switch off the machine. Switch it on again and continue to work as normal. Try to prevent the machine from seizing.

Accessories

Use only original Metabo or CAS (Cordless Alliance System) battery packs and accessories. Use only accessories which fulfil the requirements and specifications listed in these operating instructions.

• A Chargers.
• B Battery pack.
• C Safety guard for cut off grinding
• Designed for work with cut-off wheels, diamond cut off wheels.
• D Hand guard for sanding and wire brushing operations.
  • Designed for work with support plates, sanding pads, wire brushes. Install hand guard under the additional side- mounted handle
• E Adjusting nut 17.
• F Clamping nut tool free.
• G Dust filter 12.
• For a complete range of accessories.

For a complete range of accessories, see www.metabo.com or the main catalogue.

Repairs

Repairs to electrical tools must be carried out by qualified electricians ONLY. Contact your local Metabo representative if you have Metabo power tools requiring repairs. For addresses see www.metabo.com You can download a list of spare parts from www.metabo.com.

Environmental Protection

The sanding dust generated may contain hazardous materials: do not dispose of with the household waste, but at a special collection point for hazardous waste. Observe national regulations on environmentally compatible disposal and on the recycling of disused machines, packaging and accessories. Battery packs must not be disposed of with regular waste. Please return faulty or used battery packs to your Metabo dealer. Do not throw battery packs into water. Only for EU countries: Never dispose of power tools in your household waste! In accordance with European Guideline 2012/ 19/EU on used electronic and electric equipment and its implementation in national legal systems, used power tools must be collected separately and handed in for environmentally compatible recycling. Before disposal, discharge the battery pack in the power tool. Prevent the contacts from short-
circuiting (e. g. by protecting them with adhesive tape.

 Technical Specifications

• Subject to changes serving technical progress.
• U =Voltage of battery pack.
• Dmₐₓ =max. diameter of accessory.
• tmₐₓ,₁ =max. permitted thickness of clamping shank on accessory when using clamping nut  17.
• tmₐₓ,₂ =max. permitted thickness of clamping shank on accessory when using Quick clamping nut 2.
• tmₐₓ,₃ =grinding wheel / cut-off wheel: max. permitted thickness of accessory.
• M =Spindle thread.
• l =Length of the grinding spindle.
• n =No-load speed maximum speed.
• P₁ =Nominal power input.
• P₂ =Power output.
• m = Weight with the smallest battery pack measured values determined in conformity with EN 60745.
• Direct current
  The technical specifications quoted are subject to tolerances in compliance with the relevant valid standards.

Emission values

These values make it possible to assess the emissions from the power tool and to compare different power tools. Depending on the operating conditions, the condition of the power tool or the accessories, the actual load may be higher or lower. For assessment purposes, please allow for breaks and periods when the load is lower. Based on the adjusted estimates, arrange protective measures for the user e.g. organisational measures. Vibration total value vector sum of three directions determined in accordance with EN 60745

• ah, SG =Vibration emission value sanding surfaces.
• ah, DS =Vibration emission value sanding with sanding pad.
• Kh,SG/DS =Uncertainty vibration.
• Typical A-effective perceived sound levels.
  • LpA =Sound pressure level.
  • LWA =Acoustic power level KpA.
  • KWA= Uncertainty.
• During operation the noise level can exceed 80 dB(A).
• Wear ear protectors.

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