W 14-125 Ergo - Grinder METABO - Free user manual and instructions

USER MANUAL W 14-125 Ergo METABO

Exterior view of a metalworking power tool with visible brand name 'metabo' on its side (no additional signage or text)

Original instructions

1. Conformity Declaration

We, being solely responsible: Hereby declare that these angle grinders, identified by type and serial number *1), meet all relevant requirements of directives *2) and standards *3). technical documents for *4) - see Page 4.

2. Specified Use

Machines fitted with original Metabo accessories are suitable for grinding, sanding, separating 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.

3. General Safety Instructions

WARNING – Reading the operating instructions will reduce the risk of injury.

WARNING Read all safety warnings and instructions. Failure to follow all safety

warnings and instructions may result in electric shock, fire and/or serious injury.

Keep all safety instructions and information for future reference.

Before using the power tool, carefully read through and familiarise yourself with all the enclosed safety information and the Operating Instructions. Keep all enclosed documentation for future reference, and pass on your power tool only together with this documentation.

4. Special Safety Instructions

4.1 Safety Warnings Common for Grinding, Sanding, Wire Brushing or Abrasive Cutting-Off Operations:

a) This power tool is intended to function as a grinder, sander, wire brush or cut-off tool. 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.
b) 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.
c) 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.

d) 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.
e) The outside diameter and the thickness of your accessory must be within the capacity rating of your power tool. Incorrectly sized accessories cannot be adequately guarded or controlled.
f) Treaded mounting of accessories must match the grinder spindle thread. For accessories mounted by flanges, the arbour 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.
g) 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 or 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.
h) Wear personal protective equipment. Depending on application, use face shield, safety goggles or safety glasses. As 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.
i) 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.
j) Hold power tool by insulated gripping surfaces only, when performing an operation where the cutting accessory may contact hidden wiring or its own cord. A cutting accessory contacting a "live" wire may make exposed metal parts of the power tool "live" and give the operator an electric shock.
k) 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.
I) 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.

m) 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.
n) 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.
o) Do not operate the power tool near flammable materials. Sparks could ignite these materials.
p) Do not use accessories that require liquid coolants. Using water or other liquid coolants may result in electrocution or shock.

4.2 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 of 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.

a) Maintain a firm grip on the power tool and position your body and arm to allow you to resist kickback forces. Always use the 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.
b) Never place your hand near the rotating accessory. Accessory may kickback over your hand.
c) 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.
d) 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.
e) Do not attach a saw chain woodcarving blade or toothed saw blade. Such blades create frequent kickback and loss of control.

4.3 Safety Warnings Specific for Grinding and Cutting-Off Operations:

a) 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.
b) The grinding surface of the 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.
c) 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 operator from broken wheel fragments and accidental contact with wheel.
d) Wheels must be used only for recommended applications.

For example: do not grind with the side of cut-off wheel. Abrasive cut-off wheels are intended for peripheral grinding, side forces applied to these wheels may cause them to shatter.

e) 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.
f) 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.

4.4 Additional Safety Warnings Specific for Abrasive Cutting-Off Operations:

a) 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.
b) 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.
c) 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.
d) 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.
e) Support panels or any oversized workpiece to minimize the risk of wheel pinching and kickback. Large workpieces tend to sag under their

ENGLISHen

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.

f) 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.

4.5 Safety Warnings Specific for Sanding Operations:

a) 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.

4.6 Safety Warnings Specific for Wire Brushing Operations:

a) 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. b) 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.

4.7 Additional Safety Instructions

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 manufacturer's instructions.

Never use parting grinder discs for roughing work! Do not apply pressure to the side of parting grinder discs.

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. See page 2 and chapter 14. Technical Specifications for more information on the spindle length and thread.

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

Always wear protective goggles.

During machining, of metals in particular, conductive dust can form

deposits inside the machine. This can lead to the transfer of electrical energy onto the machine housing. This can mean a temporary danger of electric shocks. This is why it is necessary when the machine is running to blow compressed air through the rear ventilation slots of the machine regularly, frequently and thoroughly. Here, the machine must be held firmly.

It is recommended to use a stationary extraction system and to place a ground fault circuit interrupter (GFCI) downstream. When the angle grinder is shut down via the FI circuit breaker, it must be checked and cleaned. See chapter 9. Cleaning for more information on cleaning the motor.

Dust 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 must only be treated by specialists.

• Where the use of a dust extraction device is possible it shall be used.
• The work place must be 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.

Materials that generate dusts or vapours that may be harmful to health (e.g. asbestos) must not be processed.

When working in dusty conditions, ensure that ventilation openings are not blocked. If it becomes necessary to remove dust, first disconnect the power tool from the mains supply (use non-metallic objects) and avoid damaging internal components.

Damaged, eccentric or vibrating tools must not be used.

Avoid damage to gas or water pipes, electrical cables and loadbearing walls (static).

Connect a FI circuit-breaker with max. release current (30 mA) upstream when using the machine outdoors!

Pull the plug out of the socket before making any adjustments, converting or servicing 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.

Do not switch on the machine if tool parts or guard devices are missing or defective.

This power tool is not suitable for polishing work. Improper use of the machine will void the warranty! The motor may overheat and damage the electric power tool. We recommend using our angle polisher for polishing work.

5. Overview

See page 2.

1 Support flange
2 Spindle
3 Spindle locking button
4 Lock (to prevent the machine from being switched on unintentionally, or for continuous operation)*
5 Trigger ( for switching on and off)
6 Button (to turn the main handle)*
7 Main handle
8 Additional handle / Additional handle with vibration damping *
9 Safety guard
10 Clamping nut *
11 2-hole spanner *
12 Lever (to adjust safety guard without the use of tools)

* depending on equipment/not in scope of delivery

6. Commissioning

Before plugging in, check to see that the rated mains voltage and mains frequency, as

specified on the rating label, match your power supply.

Always install an RCD with a max. trip current of 30 mA upstream.

6.1 Attaching the additional handle

Always work with the additional handle attached (8)! Manually screw in the additional

handle securely in the left, centre or right threaded hole (depending on requirements).

6.2 Attaching the safety guard

(for work involving grinding wheels)

For reasons of safety, the safety guard (9) should always be attached when roughing

work is performed.

For reasons of safety, the special parting guard should always be attached before

parting work is performed (see chapter 11. Accessories).

See illustration E on page 2.

• Push and hold the lever (12). Place the safety guard (9) in the position indicated.
• Release the lever and turn the safety guard until the lever engages.
• Push the 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.

6.3 Rotatable main handle

Only work with the main handle (7) engaged.

See illustration B on page 2.

- Push in the button (6).

• The main handle (7) can now be turned 90° to both sides and can be engaged.
• Make sure that it is securely positioned: the main handle (7) must be engaged and it should not be possible to move it.

6.4 Power supply

The mains sockets must be protected using time-delay fuses or circuit breakers.

7. Attaching the grinding wheel

Disconnect the mains plug before changing any accessories. The machine must be shed off and the spindle at a standstill.

For reasons of safety, attach the parting guard before performing parting work (see chapter

1. Accessories).

7.1 Locking the spindle

Press in the spindle locking button (3) only when the spindle is stationary!

• Press in the spindle locking button (3) and turn the spindle
  (2) by hand until you feel the spindle locking button engage.

7.2 Placing the grinding wheel in position

See illustration C on page 2.

• Fit the support flange (1) on the spindle. The flange should not turn on the spindle when properly attached.
• Position the grinding wheel on the support flange (1) as shown in illustration C.

The grinding wheel must lay flat on the supporting flange. The metal flange on the parting grinder disc must lay flat on the support flange.

7.3 Securing/Releasing the clamping nut

Securing the clamping nut (10):

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

See illustration D on page 2.

- A) For thin grinding wheels:

The edge of the clamping nut (10) faces upwards so that the thin grinding wheel can be attached securely.

B) For thick grinding wheels:

The edge of the clamping nut (10) faces downwards so that the clamping nut can be attached securely to the spindle.

- Lock the spindle. Turn the clamping nut (10) clockwise using the 2-hole spanner (11) to secure.

Releasing the clamping nut:

- Lock the spindle (see chapter 7.1). Turn the clamping nut (10) anticlockwise using the 2-hole spanner (11) to unscrew.

8. Use 9. Cleaning

8.1 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 inadvertent starts: always switch the tool off when the plug is removed from the s socket or if there has been a power cut.

In continuous operation, the machine continues running if it is forced out of your ls. Therefore, always hold the machine with hands at the intended handles, take a secure ce and concentrate on the work.

See illustration A on page 2.

Switching the angle grinder ON just for a moment:

Switching on: Press in the lock (4) and then press the trigger switch (5). Let go of the lock (4).

Switching off: Release the trigger switch (5).

Continuous operation (depends on machine features):

Switching on: Press in the lock (4) and hold in place. Press and hold the trigger switch (5). The machine is now switched on. Now press in the lock (4) a second time to lock the trigger switch (5) in position (continuous operation).

Switching off: Press and release the trigger switch (5).

8.2 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.

Separating:

Always work against the run of the disc (see illustration). 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.

Motor cleaning: blow compressed air through the rear ventilation slots of the machine regularly, frequently and thoroughly. Here, the machine must be held firmly.

Button (6) for adjustment of the handle:

Occasionally blow compressed air through the button (when pressed, in all 3 main handle positions).

10. Troubleshooting

Switching on procedures produce brief reductions in voltage. Unfavourable power conditions can be detrimental to other devices. Power impedances smaller than 0.4 ohm should not cause any malfunction.

11. Accessories

Use only genuine Metabo accessories.

If you need any accessories, check with your dealer.

The dealer needs to know the exact model designation of your power tool in order to select the correct accessory.

See page 4.

A Roughing disc (always use with safety guard attached)

B Louver disc (always use with safety guard attached)

C Parting safety guard.

D Parting disc (always use with parting safety guard attached)

E Diamond discs (always use with parting safety guard attached)

F Parting safety guard with guide slot (place on machine and secure with screws.) (with adapter for connection to a suitable dust extractor for extraction of stone dust generated when cutting stone slabs.)

G Hand guard (for attaching under the additional side-mounted handle.)

H Extension piece (for working with supporting discs. Increases the distance between the spindle and the supporting disc by approx. 35 mm)

I Supporting disc for fibre discs (always attach using the supporting disc clamping nut supplied.) (always use with the hand guard attached.)

J Fibre discs (always use with the hand guard attached.)

K Semi-flexible sanding discs (for use with elastic supporting disc 6.23279) (always use with hand guard attached.)

L Sanding pad with Velcro (always use with the hand guard attached.)

M Adhesive sanding disc (always use with the hand guard attached.)

N Adhesive fleece (always use with the hand guard attached.)

O Steel wire brushes (always use with the hand guard attached.)

P Adjusting nut (10)

Q "Quick" clamping nut

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

12. Repairs

Repairs to electrical tools must be carried out by qualified electricians ONLY!

Any Metabo power tool in need of repair can be sent to one of the addresses listed in the spare parts list.

Please enclose a description of the fault to the power tool.

13. 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.

Metabo packaging is 100% recycled. Scrap power tools and accessories contain large amounts of valuable resources and plastics that can be recycled.

Only for EU countries: Never dispose of power tools in your household waste! In accordance with European Guideline 2002/

96/EC 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.

These instructions are printed on chlorine-free bleached paper.

14. Technical Specifications

Explanation of details on page 3. Subject to changes serving technical progress.

D_max =Maximum sanding disc diameter t_max,1 =max. permitted thickness of clamping shank on accessory when using clamping nut (10)

t_max,2 =max. permitted thickness of clamping shank on accessory when using "Quick"clamping nut

t_max,3 =Roughing disc/Parting disc: max. permitted thickness of accessory

M = S p i n d

I = Length of the grinding spindle

n = No-load speed (maximum speed)

P_1 =Nominal power input

P_2 =Power output

m = Weight without mains cable

Measured values determined in conformity with EN 60745.

Machine in protection class II

\~ Alternating 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:

a_h, SG = Vibration emission value (surface grinding)

a_h, DS = Vibration emission value (disc sanding)

K_h,SG/DS = Uncertainty (vibration)

Typical A-effective perceived sound levels:

L_pA =Sound pressure level

L_WA = Acoustic power level

K_pA, K_WA= Uncertainty

During operation the noise level can exceed 80 dB(A).

Wear ear protectors!

l e t h r e a d

Notice originale

Q Quick-strammemutter

Se www.metabo.com eller hovedkatalogen for det komplette tilbehørsprogrammet.

12. Reparasjon