KNSE 12150 - Grinder METABO - Free user manual and instructions

USER MANUAL KNSE 12150 METABO

(3; 6) M / l - / in (mm) M 14 /

Operating Instructions The machines, with original Metabo accessories, are suitable for polishing metal without the use of water. Not suitable for use with roughing disk or cut-off wheel. Not suitable for grinding, sanding, wire brushing or abrasive cutting-off operations. 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. 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 – Reading the operating instruc- tions will reduce the risk of injury. Pass on your electrical tool only together with these documents. General Power Tool Safety Warnings WARNING – Read all safety warnings and instructions. Failure to follow the warnings and instructions 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.

2.1 Work area safety

a) Keep work area clean and well lit. Cluttered or dark areas invite accidents. b) 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. c) Keep children and bystanders away while operating a power tool. Distractions can cause you to lose control.

2.2 Electrical safety

a) 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. b) 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. c) Do not expose power tools to rain or wet conditions. Water entering a power tool will increase the risk of electric shock. d) 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. e) 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. f) 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.

a) 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. b) Use personal protective equipment. Always wear eye protection. Protective equipment such as dust mask, non-skid safety shoes, hard hat, or hearing protection used for appropriate conditions will reduce personal injuries. c) 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. d) 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. e) Do not overreach. Keep proper footing and balance at all times. This enables better control of the power tool in unexpected situations. f) 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. g) 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.

2.4 Power tool use and care

a) 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. b) 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. c) Disconnect the plug from the power source and/or the battery pack 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. d) 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. e) Maintain power tools. 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. f) Keep cutting tools sharp and clean. Properly maintained cutting tools with sharp cutting edges are less likely to bind and are easier to control. g) 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.

a) 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.

3.1 Safety Warnings Common for Grinding,

Sanding, Wire Brushing, Polishing or Abrasive Cutting-Off Operations: a) This power tool is intended to function as a polisher. 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 grinding, sanding, wire brushing or cutting-off 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) The arbour size of wheels, flanges, backing pads or any other accessory must properly fit the spindle of the power tool. Accessories with arbour holes 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. Cutting accessory contacting a "live" wire may make exposed metal parts of the power tool "live" and could 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.

3.2 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 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.

3.3 Safety Warnings Specific for Polishing:

Do not allow any loose portion of the polishing bonnet or its attachment strings to spin freely. Tuck away or trim any loose attachment strings. Loose and spinning attachment strings can entangle your fingers or snag on the workpiece.

3.4 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! Accessories must be stored and handled with care in accordance with the manufacturer's instructions. The workpiece must lay flat and be secured against slipping, e.g. using clamps. Large workpieces must be sufficiently supported. 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. We recommend using a stationary extractor system and connecting a residual current circuit-breaker (FI) upstream. When the polisher is shut down via the FI circuit-breaker, it must be checked and cleaned. See chapter 8. Cleaning for more information on cleaning the motor. Dust from materials such as lead-containing paint and metal may be harmful to health. 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. 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. 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 hand guard must be replaced. Never operate a machine with a defective hand guard.ENGLISH en

Press in the spindle locking button only when the spindle is stationary 4 Sliding on/off switch 5 Additional handle / Additional handle with vibration damping * 6 Speed adjustment wheel 7 Electronic signal indicator 8Adjusting nut 9Accessory 10 Support flange 11 Spindle 12 Allen key 13 2-hole spanner

• depending on equipment/not in scope of delivery Before plugging in, check that the rated mains voltage and mains frequency, as stated on the rating label, match with your power supply.

5.1 Attaching the additional handle

Always work with the additional handle attached (5)! Attach the additional handle on the left or right of the machine and secure.

5.2 Attaching the hand guard

Always work with the hand guard (2) attached. Inserting: - Press and hold the button (1). - Slide the hand guard (2) into the slot from the bottom to the top as shown (see illustration a, page 2). First slide the glider with the widest diameter approx. 5 mm into the external slot. Then slide the glider with the smallest diameter into the inner slot. Note: Do not try to slide both gliders into both slots at the same time, as this will not work. Start with the external glider, and the inner glider will follow automatically. Turning: - Press the button (1) and turn the hand guard until the closed section is facing the operator. - Make sure that the guard is securely positioned: The button (1) must engage and you should not be able to turn the safety guard. Disconnect the mains plug before changing any accessories. The machine must be switched off and the spindle at a standstill.

6.1 Positioning the accessory

See illustration b, page 2. - The two sides of the support flange (10) are different: Place the support flange (10) around the spindle (11) in such a way that the large collar diameter which corresponds to the accessory (9) is facing upwards. - Place the accessory (9) on the support flange (10). The accessory must lay flat on the supporting flange.

6.2 Tightening/loosening the clamping nut

Securing the clamping nut (8): The 2 sides of the clamping nut (8) are different. Screw the clamping nut onto the spindle (11) as follows: - A) In the case of thick (6 mm) accessories: The collar of the clamping nut (8) faces downwards so that the clamping nut can be attached securely to the spindle. B) In the case of thin (3 mm) accessories: The collar of the clamping nut (8) faces upwards so that the thin accessory can be clamped securely. - Lock the spindle (11) using the Allen key (12). Tighten the clamping nut (8) by turning it clockwise using the 2-hole spanner (13) (see illustration c, page 2). Releasing the clamping nut: - Lock the spindle using the Allen key (12). Remove the clamping nut (8) by turning it anticlockwise using the 2-hole spanner (13) (see illustration b, page 2).

The speed can be preset via the setting wheel (6) and is infinitely variable. Positions 1-6 correspond approximately to the following no-load speeds:

5. Initial Operation

6. Attaching the accessory

7.2 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. 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. Switching on: Push the slide switch (4) forward. For continuous activation, now tilt downwards until it engages. Switching off: Press the rear end of the slide switch (4) and release.

7.3 Working instructions

Press down lightly on the machine and move over and back across the surface. Motor cleaning: blow compressed air through the rear ventilation slots of the machine regularly, frequently and thoroughly. Here, the machine must be held firmly. The electronic signal display (7) lights up and the load speed decreases. The coil 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. If the mains plug is inserted with the machine switched on, or if the current supply is restored following an interruption, the machine does not start up. Switch the machine off and on again. High-energy high-frequency interference. High- energy high-frequency interference may result in the machine switching off. In this case, please switch off the machine, disconnect the plug and then reinsert. As soon as the interference is reduced, you can continue work. Use only genuine Metabo accessories. Use only accessories which fulfil the requirements and specifications listed in these operating instruc- tions. For a complete range of accessories, see www.metabo.com or the main catalogue. 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. 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. Explanation of details on page 3. Subject to changes serving technical progress.

max =maximum diameter of accessory

max,1 =max. permitted thickness of clamping shank on accessory when using clamping nut (8)

max,3 =max. permitted thickness of accessory M=Spindle thread l =Length of the grinding spindle n =No-load speed (maximum speed)

=Power output m =Weight without mains cable The technical specifications quoted are subject to tolerances (in compliance with the relevant valid standards). Wear ear protectors!