GP3V - Grinder METABO - Free user manual and instructions

USER MANUAL GP3V METABO

SAFETY INSTRUCTIONS AND INSTRUCTION MANUAL

Read and understand all of the safety precautions, warnings and operating instructions in the Instruction Manual before operating or maintaining this power tool. Most accidents that result from power tool operation and maintenance are caused by the failure to observe basic safety rules or precautions. An accident can often be avoided by recognizing a potentially hazardous situation before it occurs, and by observing appropriate safety procedures. Basic safety precautions are outlined in the “SAFETY” section of this Instruction Manual and in the sections which contain the operation and maintenance instructions. Hazards that must be avoided to prevent bodily injury or machine damage are identifi ed by WARNINGS on the power tool and in this Instruction Manual. NEVER use this power tool in a manner that has not been specifi cally recommended by metabo HPT.

MEANINGS OF SIGNAL WORDS

WARNING indicates a potentially hazardous situations which, if ignored, could result in death or serious injury. CAUTION indicates a potentially hazardous situations which, if not avoided, may result in minor or moderate injury, or may cause machine damage. NOTE emphasizes essential information. 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 fl ammable 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) 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 infl uence of drugs, alcohol or medication.

GENERAL POWER TOOL SAFETY WARNINGS

WARNING Read all safety warnings and all instructions. Failure to follow the warnings and instructions may result in electric shock, fi re 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. 000BookGP3V.indb3000BookGP3V.indb3 2018/03/2213:24:152018/03/2213:24:15English

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 fi nger 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.

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 aff ect the power tools’ 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 diff erent from those intended could result in a hazardous situation.

a) Have your power tool serviced by a qualifi ed repair person using only identical replacement parts. This will ensure that the safety of the power tool is maintained.

SAFETY WARNINGS COMMON FOR

GRINDING OPERATIONS a) This power tool is intended to function as a grinder. Read all safety warnings, instructions, illustrations and specifi cations provided with this power tool. Failure to follow all instructions listed below may result in electric shock, fi re and/or serious injury. b) Operations such as sanding, wire brushing, polishing 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 specifi cally 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 accessories must be at least equal to the maximum speed marked on the power tool. Accessories running faster than their rated speed can break and fl y 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 controlled. f) The arbour size of wheels, sanding drums or any other accessory must properly fi t the spindle or collet of the power tool. 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) Mandrel mounted wheels, sanding drums, cutters or other accessories must be fully inserted into the collet or chuck. 000BookGP3V.indb4000BookGP3V.indb4 2018/03/2213:24:152018/03/2213:24:15English

If the mandrel is insuffi ciently held and/or the overhang of the wheel is too long, the mounted wheel may become loose and be ejected at high velocity. h) Do not use a damaged accessory. Before each use inspect the accessory such as abrasive wheels for chips and cracks, sanding drum for cracks, tear or excess wear, wire brush for loose or cracked wires. If 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.

i) 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 fl ying debris generated by various operations. The dust mask or respirator must be capable of fi ltrating particles generated by your operation. Prolonged exposure to high intensity noise may cause hearing loss. j) 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 fl y away and cause injury beyond immediate area of operation. k) 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. l) Always hold the tool fi rmly in your hand(s) during the start-up. The reaction torque of the motor, as it accelerates to full speed, can cause the tool to twist. m) Use clamps to support workpiece whenever practical. Never hold a small workpiece in one hand and the tool in the other hand while in use. Clamping a small workpiece allows you to use your hand(s) to control the tool. Round material such as dowel rods, pipes or tubing have a tendency to roll while being cut, and may cause the bit to bind or jump toward you. n) 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. o) 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. p) After changing the bits or making any adjustments, make sure the collet nut, chuck or any other adjustment devices are securely tightened. Loose adjustment devices can unexpectedly shift, causing loss of control, loose rotating components will be violently thrown. q) 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. r) 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. s) Do not operate the power tool near fl ammable materials. Sparks could ignite these materials. t) 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, sanding band, 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. 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 fi rm grip on the power tool and position your body and arm to allow you to resist kickback forces. The operator can control kickback forces, if proper precautions are taken.

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. c) Do not attach a toothed saw blade. Such blades create frequent kickback and loss of control. d) Always feed the bit into the material in the same direction as the cutting edge is exiting from the material (which is the same direction as the chips are thrown). Feeding the tool in the wrong direction causes the cutting edge of the bit to climb out of the work and pull the tool in the direction of this feed. 000BookGP3V.indb5000BookGP3V.indb5 2018/03/2213:24:152018/03/2213:24:15English

e) When using mandrel mounted bonded abrasives, always have the work securely clamped. These wheels will grab if they become slightly canted in the groove, and can kickback. When a mandrel mounted bonded abrasive grabs, it may jump from the groove and you could lose control of the tool.

SAFETY WARNINGS SPECIFIC FOR

GRINDING OPERATIONS a) Use only wheel types that are recommended for your power tool and only for recommended applications. For example: do not grind with the side of a cut-off wheel. Abrasive cut-off wheels are intended for peripheral grinding, side forces applied to these wheels may cause them to shatter. b) For threaded abrasive cones and plugs use only undamaged wheel mandrels with an unrelieved shoulder fl ange that are of correct size and length. Proper mandrels will reduce the possibility of breakage. c) Do not “jam” a 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 snagging of the wheel in the cut and the possibility of kickback or wheel breakage. d) Do not position your hand in line with and behind the rotating wheel. When the wheel, at the point of operation, is moving away from your hand, the possible kickback may propel the spinning wheel and the power tool directly at you. e) When wheel is pinched, snagged 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 pinching or snagging. f) Do not restart the cutting operation in the workpiece. Let the wheel reach full speed and carefully re-enter the cut. The wheel may bind, walk up or kickback if the power tool is restarted in the workpiece. g) 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. h) 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.

GENERAL SAFETY INSTRUCTIONS FOR

GRINDERS – Check that speed marked on the wheel is equal to or greater than the rated speed of the grinder; – Ensure that the wheel dimensions are compatible with the grinder; – Abrasive wheels shall be stored and handled with care in accordance with manufacturer’s instructions; – Inspect the grinding wheel before use, do not use chipped, cracked or otherwise defective products; – Ensure that mounted wheels and points are fi tted in accordance with the manufacturer’s instructions; – Ensure that blotters are used when they are provided with the bonded abrasive product and when they are required; – Ensure that the abrasive product is correctly mounted and tightened before use and run the tool at no-load for 30 s in a safe position, stop immediately if there is considerable vibration or if other defects are detected. If this condition occurs, check the machine to determine the cause; – If a guard is equipped with the tool never use the tool without such a guard; – Do not use separate reducing bushings or adapters to adapt large hole abrasive wheels; – For tools intended to be fi tted with threaded hole wheel, ensure that the thread in the wheel is long enough to accept the spindle length; – Secure the workpiece and check that the workpiece is properly supported. A workpiece clamped with clamping devices or in a vice is held more securely than by hand; – Do not use cutting off wheel for side grinding; – Ensure that sparks resulting from use do not create a hazard e.g. do not hit persons, or ignite fl ammable substances; – Ensure that ventilation openings are kept clear when working in dusty conditions, if it should become necessary to clear dust, fi rst disconnect the tool from the mains supply (use non metallic objects) and avoid damaging internal parts; – Always use eye and ear protection. Other personal protective equipment such as dust mask, gloves, helmet and apron should be worn; – Pay attention to the wheel that continues to rotate after the tool is switched off .

SPECIFIC SAFETY RULES AND SYMBOLS

1. ALWAYS use proper guard with grinding wheel.

A guard protects operator from broken wheel fragments.

2. Accessories must be rated for at least the speed

recommended on the tool warning label. Wheels and other accessories running over rated speed can fl y apart and cause injury.

3. Hold tools by insulated gripping surfaces when

performing an operation where the cutting tool may contact hidden wiring or its own cord. 000BookGP3V.indb6000BookGP3V.indb6 2018/03/2213:24:152018/03/2213:24:15English

Contact with a “live” wire will make exposed metal parts of the tool “live” and shock the operator.

4. ALWAYS wear ear protectors when using the tool

for extended periods. Prolonged exposure to high intensity noise can cause hearing loss.

5. Use only a wheel with a rated capacity which is

GREATER than 30,800/min for GP3V and 8,820/ min for GP5V. Using any wheel a rated capacity LESS than 30,800/ min for GP3V and 8,820/min for GP5V and/or an incorrect sized wheel (see SPECIFICATIONS at page 9) may result in wheel breakage, fl ying wheel fragments, and resulting in death or serious injury.

6. Never touch moving parts.

NEVER place your hands, fi ngers or other body parts near the tool’s moving parts.

7. NEVER operate without all guards in place.

NEVER operate this tool without all guards or safety features in place and in proper working order. If maintenance or servicing requires the removal of a guard or safety feature, be sure to replace the guard or safety feature before resuming operation of the tool.

Don’t force small tool or attachment to do the job of a heavy-duty tool. Don’t use tool for purpose not intended – for example – don’t use circular saw for cutting tree limbs or logs.

9. NEVER use a power tool for applications other

than those specifi ed. NEVER use a power tool for applications other than those specifi ed in the Instruction Manual.

10. Handle tool correctly.

Operate the tool according to the instructions provided herein. Do not drop or throw the tool. NEVER allow the tool to be operated by children, individuals unfamiliar with its operation or unauthorized personnel.

11. Keep all screws, bolts and covers tightly in place.

Keep all screws, bolts, and plates tightly mounted. Check their condition periodically.

12. Do not use power tools if the plastic housing or

handle is cracked. Cracks in the tool’s housing or handle can lead to electric shock. Such tools should not be used until repaired.

13. Blades and accessories must be securely

mounted to the tool. Prevent potential injuries to yourself or others. Blades, cutting implements and accessories which have been mounted to the tool should be secure and tight.

14. Keep motor air vent clean.

The tool’s motor air vent must be kept clean so that air can freely fl ow at all times. Check for dust build-up frequently.

15. Operate power tools at the rated voltage.

Operate the power tool at voltages specifi ed on its nameplate. If using the power tool at a higher voltage than the rated voltage, it will result in abnormally fast motor revolution and may damage the unit and the motor may burn out.

16. NEVER use a tool which is defective or operating

abnormally. If the tool appears to be operating unusually, making strange noises, or otherwise appears defective, stop using it immediately and arrange for repairs by a metabo HPT authorized service center.

17. NEVER leave tool running unattended. Turn power

off . Don’t leave tool until it comes to a complete stop.

18. Carefully handle power tools.

Should a power tool be dropped or struck against hard materials inadvertently, it may be deformed, cracked, or damaged.

19. Do not wipe plastic parts with solvent.

Solvents such as gasoline, thinner benzine, carbon tetrachloride, and alcohol may damage and crack plastic parts. Do not wipe them with such solvents. Wipe plastic parts with a soft cloth lightly dampened with soapy water and dry thoroughly.

20. NEVER use a depressed center wheel which is cracked

generated by the grinder can cause explosion, such as where fl ammable materials or gases are present.

22. NEVER push in the push button while the spindle is

23. ALWAYS wear eye protection that meets the

requirement of the latest revision of ANSI Standard Z87.1.

24. ALWAYS wear a mask or respirator to protect yourself

from dust or potentially harmful particles generated during the grinding operation.

25. ALWAYS fi rmly grip the body handle and side handle

while operating the grinder.

26. ALWAYS have a trial run before grinding commence.

27. ALWAYS follow the instructions contained in this

manual when replacing the depressed center wheel.

28. ALWAYS be careful with buried object such as an

underground wiring. Touching these active wiring or electric cable with this tool, you may receive an electric shock. Confi rm if there are any buried object such as electric cable within the wall, fl oor or ceiling where you are going to operate here after. 000BookGP3V.indb7000BookGP3V.indb7 2018/03/2213:24:152018/03/2213:24:15English

SAVE THESE INSTRUCTIONS

AND OWNERS OF THIS TOOL!

29. Defi nitions for symbols used on this tool

OPERATION To ensure safer operation of this power tool, metabo HPT has adopted a double insulation design. “Double insulation” means that two physically separated insulation systems have been used to insulate the electrically conductive materials connected to the power supply from the outer frame handled by the operator. Therefore, either the symbol “ ” or the words “Double insulation” appear on the power tool or on the nameplate. Although this system has no external grounding, you must still follow the normal electrical safety precautions given in this Instruction Manual, including not using the power tool in wet environments. To keep the double insulation system eff ective, follow these precautions:

Only metabo HPT AUTHORIZED SERVICE CENTER should disassemble or assemble this power tool, and only genuine metabo HPT replacement parts should be installed.

Clean the exterior of the power tool only with a soft cloth moistened with soapy water, and dry thoroughly. Never use solvents, gasoline or thinners on plastic components; otherwise the plastic may dissolve. 000BookGP3V.indb8000BookGP3V.indb8 2018/03/2213:24:162018/03/2213:24:16English

FUNCTIONAL DESCRIPTION SPECIFICATIONS Model GP3V GP5V Motor Single-Phase, Series Commutator Motor Power Source Single-Phase, 120 V AC 60 Hz Current 6.7 A No-Load Speed 7,000 - 29,000 / min 2,000 - 8,300 / min Rated Speed 30,800 / min 8,820 / min Max. Wheel Diam. 1" (25 mm) 2" (50 mm) Collet Chuck Capacity 1/4" (6.35 mm) 1/4" (6.35 mm) Weight (without cord) 4.0 lbs (1.8 kg) 4.2 lbs (1.9 kg) WARNING NEVER use an abrasive wheel, cutting wheel, or any wheel greater than 1" in diameter for GP3V and 2” in diameter for GP5V. Using such wheels can result in wheel breakage, and will otherwise increase the risk of bodily injury from contact with the wheel or wheel fragments. NOTE The information contained in this Instruction Manual is designed to assist you in the safe operation and maintenance of the power tool. NEVER operate, or attempt any maintenance on the tool unless you have fi rst read and understood all safey instructions contained in this manual. Some illustrations in this Instruction Manual may show details or attachments that diff er from those on your own power tool.

Finishing of dies for press working, die casting and moulding.

Finishing of thread cutting dies, tools and other small parts.

Internal grinding of tools and machine parts. WARNING To avoid the risk of serious injury, NEVER use this grinder with abrasive wheels, cut-off wheels and/ or saw blades. Use only with mandrel mounted abrasive stones.

Ensure that the power source to be utilized conforms to the power source requirements specifi ed on the product nameplate.

Ensure that the switch is in the OFF position. If the plug is connected to a receptacle while the switch is in the ON position, the power tool will start operating immediately and can cause serious injury.

When the work area is far away from the power source, use an extension cord of suffi cient thickness and rated capacity. The extension cord should be kept as short as practicable. WARNING Damaged cord must be replaced or repaired.

4. Check the receptacle

If the receptacle only loosely accepts the plug, the receptacle must be repaired. Contact a licensed electrician to make appropriate repairs. If such a faulty receptacle is used, it may cause overheating, resulting in a serious hazard.

5. Check the work site and surrounding area

Be sure that the work area has been thoroughly checked and prepared to avoid any unsafe conditions. Review the SAFETY section of this manual.

6. Installing a wheel

WARNING USING A WRONG SIZED WHEEL OR A WRONG

INJURY. In order to avoid this hazard, refer to the following rated rotation speed wheel and the following illustration to determine the proper dimensions(s) of your wheel. Some guidelines: (a) Use only wheels rated at 30,800/min for GP3V and 8,820/min for GP5V or more. Using wheel rated less can lead to wheel disintegration during operation and cause serious bodily injury. (b) Dimension ℓ should always be less than 1/2" (13 mm). Longer lengths can result in excess vibration, wheel breakage, and the chance for serious injury. (c) When dimension d is 1/4" (6.35 mm), the diameter of the wheel (dimension D) should be less than 1" (25 mm) for GP3V and less than 2" (50 mm for GP5V). NEVER use a longer diameter wheel. (d) When dimension d is 1/8" (3.175 mm), the diameter of the wheel (dimension D) should be less than 3/8" (10 mm) for GP3V and less than 3/4" (20 mm for GP5V). (e) Dimension L varies according to the dimension D. Dimension L can be longer as dimension D increase. Refer to the following table: GP3V (When ℓ =1/2’’ (13 mm))

Do not tighten the collet chuck by inserting a shaft thinner than the regular shaft diameter (1/4’’ (6.35mm)) in the chuck or in an empty condition. This practice will damage the collet chuck.

When installing a wheel with shaft, tighten the collet chuck after applying a small quantity of spindle oil (or sewing machine oil) to the tapered portion indicated in Fig. 2.

7. Using the side handle (Fig. 4)

Be sure to use the side handle to avoid the risk of severe electrical shock. Attach the side handle to the machine as follows. (1) Loosen the side handle grip and insert the side handle to the nose bracket part of the machine from the fl ange part of the side handle sleeve. (2) Set the side handle to a position that is suited to the operation and then securely tighten the side handle grip. Fig. 4 Side handle Flange part Tighten Loosen Side handle grip Side handle sleeve GRINDER OPERATION

1. Switching operation (Fig. 5)

(1) When throwing the switch lever to the ON side, power is applied; when throwing it to the OFF side, power is switched off . Fig. 5 Switch OFF

(2) After installing a new wheel, “test” the condition of the wheel by allowing the grinder to operate for 180 seconds while the wheel is pointed away from you. Keep your hands and body away from the wheel at all times.

2. Adjusting the number of revolution

These models are equipped with an electronic infi nite- variable-speed drive and can change the number of revolution according to a use. If you turn and set the dial scale (Fig. 6) to 6, the number of revolution increases, and if you turn and set it to 1, the number of revolution decreases. 000BookGP3V.indb11000BookGP3V.indb11 2018/03/2213:24:162018/03/2213:24:16English

Before use, set the number of revolution using the dial. In so doing, refer to the following table as a rough guide. Dial Use Rotation speed (/min) GP 3V GP 5V

Polishing, fi nishing 7,000 2,000

Removal of paint or coat 11,400 3,250

Removal of burrs 20,200 5,800

When using the grinder in the immediate vicinity of welding equipment, the rotational speed may become unstable. Do not use the grinder near welding equipment.

When using the tool at any value except the full speed (Dial scale 6), the motor cannot be suffi ciently cooled due to the decreased number of revolution. This could result in the risk of burning and damaging the motor before an overload protective mechanism starts to function. Make sure that you use the tool by lightly applying it to the surface of material when you use it at any value except the full speed (Dial scale 6). WARNING Do not press the grinder forcibly against the surface to be ground. Heavy pressure can result in wheel breakage and serious injury. It can also damage the surface being ground or damage the grinder’s motor.

3. Precautions on operation

(1) Lightly press the wheel to the material to be ground when grinding materials, high-speed revolution is necessary. Use a hand grinder with high-speed revolution, minimizing the pressing force. (2) Dressing the wheel After attaching a wheel, adjust defl ection of the wheel center by using a dresser. If the wheel center is eccentric, not only precise fi nishing cannot be achieved but also grinder vibration increases, lowering grinder accuracy and durability. A clogged or worn wheel will soil the fi nishing surface or lower grinding effi ciency. Occasionally dress the wheel by applying the dresser. 000BookGP3V.indb12000BookGP3V.indb12 2018/03/2213:24:172018/03/2213:24:17English

Be sure to switch power OFF and disconnect the plug during maintenance and inspection.

Using cracked, deformed or damaged wheels can lead to wheel breakage and resulting serious injury.

1. Inspecting the wheel

Ensure that the wheel is free of cracks and surface defects.

2. Inspecting the mounting screws

Regularly inspect all mounting screws and ensure that they are properly tightened. Should any of the screws be loose, retighten them immediately. WARNING Using this hand grinder with loosened screws is extremely dangerous.

3. Inspecting the carbon brushes (Fig. 7)

The motor employs carbon brushes which are consumable parts. Replace the carbon brush with a new one when it becomes worn to its wear limit. Always keep carbon brushes clean and ensure that they slide freely within the brush holders.

Fig. 7 Wear limit 0.24" (6 mm) 0.67" (17 mm) No. of carbon brush CAUTION Using this hand grinder with a carbon brush which is worn in excess of the wear limit will damage the motor. NOTE Use metabo HPT carbon brush No. 88 indicated in Fig. 7.

4. Replacing carbon brushes (Fig. 8):

<Disassembly> (1) Loosen the D4 tapping screw retaining the tail cover and remove the tail cover. (2) Use the auxiliary hexagonal wrench or small screwdriver to pull up the edge of the spring that is holding down the carbon brush. Remove the edge of the spring toward the outside of the brush holder. (3) Remove the end of the pig-tail on the carbon brush from the terminal section of brush holder and then remove the carbon brush from the brush holder. <Assembly> (1) Insert the end of the pig-tail of the carbon brush in the terminal section of brush holder. (2) Insert the carbon brush in the brush holder. (3) Use the auxiliary hexagonal wrench or small screwdriver to return the edge of the spring to the head of the carbon brush. NOTE Make sure the end of the spring is not holding the pig- tail. (4) Mount the tail cover and tighten the D4 tapping screw. Fig. 8 Carbon Brush Brush Holder Spring

5. Service and repairs

All quality power tools will eventually require servicing or replacement of parts because of wear from normal use. To assure that only authorized replacement parts will be used, all service and repairs must be performed by a metabo HPT AUTHORIZED SERVICE CENTER, ONLY.

6. Service parts list

CAUTION Repair, modifi cation and inspection of metabo HPT Power Tools must be carried out by a metabo HPT Authorized Service Center. This Parts List will be helpful if presented with the tool to the metabo HPT Authorized Service Center when requesting repair or other maintenance. In the operation and maintenance of power tools, the safety regulations and standards prescribed in each country must be observed. MODIFICATIONS: metabo HPT Power Tools are constantly being improved and modified to incorporate the latest technological advancements. Accordingly, some parts may be changed without prior notice. 000BookGP3V.indb13000BookGP3V.indb13 2018/03/2213:24:172018/03/2213:24:17English

ACCESSORIES WARNING ALWAYS use Only authorized metabo HPT replacement parts and accessories. Never use replacement parts or accessories which are not intended for use with this tool. Contact metabo HPT if you are not sure whether it is safe to use a particular replacement part or accessory with your tool. The use of any other attachment or accessory can be dangerous and could cause injury or mechanical damage. NOTE Accessories are subject to change without any obligation on the part of the metabo HPT. STANDARD ACCESSORIES (1) Wrench (43/64’’(17 mm)) (Code No. 936638) ..........1 (2) Wrench (15/32’’(12 mm)) (Code No. 936553) ..........1 (3) Side Handle (Code No. 329758)..............................1 OPTIONAL ACCESSORIES …sold separately

Collet chuck (for 1/8’’(3.175 mm) shaft) Dimensions and handling methods other than the shaft hole are the same as those for the 1/4’’(6 mm) collet chuck.

Case NOTE Specifications are subject to change without any obligation on the part of the metabo HPT. 000BookGP3V.indb14000BookGP3V.indb14 2018/03/2213:24:182018/03/2213:24:1815 Français

(W/SP. WASHER) M4 × 10

Some dust created by power sanding, sawing, grinding, drilling, and other construction activities contains chemicals known to the State of California 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.