makita BGA450 Cordless Angle Grinder Instruction Manual

makita BGA450 Cordless Angle Grinder

IMPORTANT: Lire avant usage.

SPECIFICATIONS

• Due to our continuing program of research and development, the specifications herein are subject to change without notice.
• Specifications and battery cartridges may differ from country to country.
• Weight, with battery cartridge, according to EPTA-Procedure 01/2003

General Power Tool Safety

WARNING Read all safety warnings and all 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.

Work area safety

1. Keep the work area clean and well-lit. Cluttered or dark areas invite accidents.

2. Do not operate power tools in explosive atmospheres, such as in the presence of flammable liquids, gases or dust. Power tools create sparks that may ignite the dust or fumes.

3. Keep children and bystanders away while operating a power tool. Distractions can cause you to lose control.
   Electrical Safety

4. 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 the risk of electric shock.

5. 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.

6. Do not expose power tools to rain or wet conditions. Water entering a power tool will increase the risk of electric shock.

7. Do not abuse the cord. Never use the cord for carrying, pulling or unplugging the power tool. Keep the cord away from heat, oil, sharp edges or moving parts. Damaged or entangled cords increase the risk of electric shock.

8. When operating a power tool outdoors, use an extension cord suitable for outdoor use. The use of a cord suitable for outdoor use reduces the risk of electric shock.

9. If operating a power tool in a damp location is unavoidable, use a ground fault circuit interrupter (GFCI) protected supply. The use of a GFCI reduces the risk of electric shock.
   Personal Safety

10. 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.

11. Use personal protective equipment. Always wear eye protection. Protective equipment such as dust masks, non-skid safety shoes, hard hats, or hearing protection used for appropriate conditions will reduce personal injuries.

12. Prevent unintentional starting. Ensure the switch is in the off-position before connecting to a 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.

13. 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.

14. Do not overreach. Keep proper footing and balance at all times. This enables better control of the power tool in unexpected situations.

15. 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.

16. If devices are provided for the connection of dust extraction and collection facilities, ensure these are connected and properly used. The use of dust collection can reduce dust-related hazards.
    Power tool use and care

17. 17. 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.

18. Do not use the power tool if the switch does not turn on and off. Any power tool that cannot be controlled with the switch is dangerous and must be repaired.

19. 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.

20. 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.

21. 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.

22. Keep cutting tools sharp and clean. Properly maintained cutting tools with sharp cutting edges are less likely to bind and are easier to control.

23. Use the power tool, accessories tool bits etc. under 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.
    Battery tool use and care

24. Recharge only with the charger specified by the manufacturer. A charger that is suitable for one type of battery pack may create a risk of fire when used with another battery pack.

25. Use power tools only with specifically designated battery packs. Use of any other battery packs may create a risk of injury and fire.

26. When the battery pack is not in use, keep it away from other metal objects, like paper clips, coins, keys, nails, screws or other small metal objects, that can make a connection from one terminal to another. Shorting the battery terminals together may cause burns or a fire.

27. Under abusive conditions, liquid may be ejected from the battery; avoid contact. If contact accidentally occurs, flush with water. If liquid contacts the eyes, additionally seek medical help. Liquid ejected from the battery may cause irritation or burns.
    Service

28. 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.

29. Follow instructions for lubricating and changing accessories.

30. Keep handles dry, clean and free from oil and grease.

SPECIFIC SAFETY RULES
DO NOT let comfort or familiarity with the product (gained from repeated use) replace strict adherence to grinder safety rules. If you use this tool unsafely or incorrectly, you can suffer serious personal injury.

1. Always use a proper guard with a grinding wheel. A guard protects the 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 at rated speed can fly apart and cause injury.
3. Hold the tool by insulating gripping surfaces when performing an operation where the cutting tool may contact hidden wiring. Contact with a “live” wire will make exposed metal parts of the tool “live” and shock the operator.
4. When using depressed centre grinding wheels, be sure to use only fiberglass-reinforced wheels.
5. Always use safety glasses or goggles. Ordinary eyes or sunglasses are NOT safety glasses.
6. Check the wheel carefully for cracks or damage before operation. Replace cracked or damaged wheels immediately. Run the tool (with guard) at no load for about a minute, holding the tool away from others. If the wheel is flawed, it will likely separate during this test.
7. Use only the flanges specified for this tool.
8. Be careful not to damage the spindle, the flange (especially the installing surface) or the lock nut. Damage to these parts could result in wheel breakage.
9. NEVER use tools with wood cutting blades or other sawblades. Such blades when used on a grinder frequently kick and cause loss of control leading to personal injury.
10. Hold the tool firmly.
11. Keep hands away from rotating parts.
12. Make sure the wheel is not contacting the workpiece before the switch is turned on.
13. Before using the tool on an actual workpiece, let it run for a while. Watch for vibration or wobbling that could indicate poor installation or a poorly balanced wheel.
14. Use the specified surface of the wheel to perform the grinding.
15. Watch out for flying sparks. Hold the tool so that sparks fly away from you and other persons or flammable materials.
16. Do not leave the tool running. Operate the tool only when hand-held.
17. Do not touch the workpiece immediately after the operation; it may be extremely hot and could burn your skin.
18. ALWAYS wear proper apparel including long sleeve shirts, leather gloves and shop aprons to protect skin from contact with hot grindings.
19. Use of this tool to grind or sand some products, paints and wood could expose users to dust containing hazardous substances. Use appropriate respiratory protection.
20. NEVER USE Stone Cup-type wheels with this grinder. This grinder is not designed for these types of wheels and the use of such a product may result in serious personal injury.

SAVE THESE INSTRUCTIONS.

WARNING:
MISUSE or failure to follow the safety rules stated in this instruction manual may cause serious personal injury.

Symbols

The following shows the symbols used for the tool.

IMPORTANT SAFETY INSTRUCTIONS

FOR BATTERY CARTRIDGE

1. Before using the battery cartridge, read all instructions and cautionary markings on (1) the battery charger, (2) the battery, and (3) the product using the battery.

2. Do not disassemble the battery cartridge.

3. If operating time has become excessively shorter, stop operating immediately. It may result in a risk of overheating, possible burns and even an explosion.

4. If electrolyte gets into your eyes, rinse them out with clear water and seek medical attention right away. It may result in loss of your eyesight.

5. Do not short the battery cartridge:

6. Do not touch the terminals with any conductive material.

7. Avoid storing battery cartridges in a container with other metal objects such as nails, coins, etc.

8. Do not expose the battery cartridge to water or rain.
   A battery short can cause a large current flow, overheating, possible burns and even a breakdown.

9. Do not store the tool and battery cartridge in locations where the temperature may reach or exceed 50 ﾟ C (122 ﾟ F).

10. Do not incinerate the battery cartridge even if it is severely damaged or completely worn out. The battery cartridge can explode in a fire.

11. Be careful not to drop or strike the battery.

12. Do not use a damaged battery.

13. Follow your local regulations relating to the disposal of batteries.

SAVE THESE INSTRUCTIONS.
Tips for maintaining maximum battery life

1. Charge the battery cartridge before completely discharged.
   Always stop tool operation and charge the battery cartridge when you notice less tool power.

2. Never recharge a fully charged battery cartridge. Overcharging shortens the battery service life.

3. Charge the battery cartridge at room temperature at 10 ﾟ C – 40 ﾟ C (50 ﾟ F – 104 ﾟ F). Let a hot battery cartridge cool down before charging it.

4. Charge the battery cartridge once every six months if you do not use it for a long period.

FUNCTIONAL DESCRIPTION

CAUTION:
Always be sure that the tool is switched off and the battery cartridge is removed before adjusting or checking the function of the tool.

Installing or removing the battery cartridge

1. Button
2. Red indicator
3. Battery cartridge

CAUTION:

• Always switch off the tool before installing or removing the battery cartridge.
• Hold the tool and the battery cartridge firmly when installing or removing the battery cartridge. Failure to hold the tool and the battery cartridge firmly may cause them to slip off your hands and result in damage to the tool and battery cartridge and a personal injury.

To remove the battery cartridge, slide it from the tool while sliding the button on the front of the cartridge. To install the battery cartridge, align the tongue on the battery cartridge with the groove in the housing and slip it into place. Insert it until it locks in place with a little click. If you can see the red indicator on the upper side of the button, it is not locked completely.

CAUTION:

• Always install the battery cartridge fully until the red indicator cannot be seen. If not, it may accidentally fall out of the tool, causing injury to you or someone around you.
• Do not install the battery cartridge forcibly. If the cartridge does not slide in easily, it is not being inserted correctly.

Battery protection system

• The tool is equipped with a battery protection system. This system automatically cuts off power to the motor to extend battery life.

• The tool will automatically stop during operation if the tool and/or battery are placed under one of the following conditions:

• Overloaded:
  The tool is operated in a manner that causes it to draw an abnormally high current. In this situation, turn the tool off and stop the application that caused the tool to become overloaded. Then turn the tool on to restart. If the tool does not start, the battery is overheated. In this situation, let the battery cool before turning the tool on again.

• Low battery voltage:
  The remaining battery capacity is too low and the tool will not operate. In this situation, remove and recharge the battery.

NOTE:
The overheat protection works only with a battery cartridge with a star mark.

1. Star marking

Indication lamp with multi-function

1. Indication lamp

Indication lamps are located in two positions. When the battery cartridge is inserted into the tool with the slide switch positioned in the “O (OFF)”, the indication lamp flickers quickly for approximately one second. If it does not flicker so, the battery cartridge or indication lamp may be broken.

• Overload protection
  • When the tool becomes overloaded, the indication lamp lights up. When the load on the tool is reduced, the lamp goes out.
  • If the tool continues to be overloaded and the indication lamp continues to light up for approximately two seconds, the tool stops. This prevents the motor and its related parts from being damaged.
  • In this situation, move the slide switch to the “O (OFF)” position once. And then move it to the “I (ON)” position again to restart.
  • Battery cartridge replacing signal
  • When the remaining battery capacity is low, the indicator lamp lights up during operation earlier than that of high battery capacity.
• Accidental re-start preventive function
  • Even if the battery cartridge is inserted into the tool with the slide switch in the “I (ON)” position, the tool does not start. In this situation, the lamp flickers slowly. It indicates that the accidental re-start preventive function is at work.
  • To start the tool, first slide the slide switch toward the “O (OFF)” position and then slide it toward the “I (ON)” position.

Shaft lock

1. Shaft lock

CAUTION:
Never actuate the shaft lock when the spindle is moving. The tool may be damaged.

Press the shaft lock to prevent spindle rotation when installing or removing accessories.

Switch action

1. Slide switch

CAUTION:

• Before inserting the battery cartridge into the tool, always check to see that the slide switch actuates properly and returns to the “OFF” position when the rear of the slide switch is depressed.
• The switch can be locked in the “ON” position for ease of operator comfort during extended use. Apply caution when locking the tool in the “ON” position and maintain a firm grasp on the tool.

To start the tool, slide the slide switch toward the “I (ON)” position. For continuous operation, press the front of the slide switch to lock it. To stop the tool, press the rear of the slide switch, then slide it toward the “O (OFF)” position.

ASSEMBLY

CAUTION:
Always be sure that the tool is switched off and the battery cartridge is removed before carrying out any work on the tool.

Installing side grip (handle)

CAUTION:
Always be sure that the side grip is installed securely before operation.

Screw the side grip securely on the position of the tool as shown in the figure.

Installing or removing wheel guard

1. Wheel guard
2. Bearing box
3. Screw

WARNING:
When using a depressed centre grinding wheel/Multi-disc, flex wheel, wire wheel brush, cut-off wheel or diamond wheel, the wheel guard must be fitted on the tool so that the closed side of the guard always points toward the operator.

Mount the wheel guard with the protrusion on the wheel guard band aligned with the notch on the bearing box. Then rotate the wheel guard around 180 degrees. Be sure to tighten the screw securely. To remove the wheel guard, follow the installation procedure in reverse.

Installing or removing the depressed center grinding wheel/Multi-disc

1. Lock nut
2. Depressed centre grinding wheel/Multi-disc
3. Inner flange

WARNING:
Always use a supplied guard when the depressed centre grinding wheel/Multi- disc is on the tool. The wheel can shatter during use and the guard helps to reduce chances of personal injury.

Mount the inner flange onto the spindle. Fit the wheel/disc on the inner flange and screw the lock nut onto the spindle. To tighten the lock nut, press the shaft lock firmly so that the spindle cannot revolve, then use the lock nut wrench and securely tighten clockwise.

1. Lock nut wrench
2. Shaft lock

To remove the wheel, follow the installation procedure in reverse.

Installing or removing the diamond wheel (optional accessory)

CAUTION:

• Always install the wheel guard before installing the diamond wheel.
• When mounting the wheel ensure that the arrow (indicating the direction of rotation) on the wheel is pointing in the same direction as the arrow for rotation provided on the tool.

Mount the inner flange onto the spindle so that the side of the inner flange with the 7/8″ diameter protrusion faces the diamond wheel. Place the diamond wheel onto the inner flange making sure the protrusion fits into the arbor of the wheel. Use the lock nut to secure the wheel by placing it on the spindle so that the flat side faces the wheel and screws the lock nut onto the spindle. To tighten the lock nut, press the shaft lock firmly so that the spindle cannot revolve, then use the lock nut wrench and securely tighten clockwise.

1. Lock nut
2. Diamond wheel
3. Inner flange
4. Spindle

Installing or removing the flex wheel (optional accessory)

1. Lock nut
2. Flex wheel
3. Plastic pad
4. Inner flange

WARNING:
Always use a supplied guard when the flex wheel is on the tool. The wheel can shatter during use and the guard helps to reduce chances of personal injury.

Follow instructions for the depressed center grinding wheel/Multi-disc but also use a plastic pad over the wheel. See the order of assembly on the accessories page in this manual.

Installing or removing abrasive disc (optional accessory)

1. Lock nut
2. Abrasive disc
3. Rubber pad

NOTE:
Use sander accessories specified in this manual. These must be purchased separately.

Mount the rubber pad onto the spindle. Fit the disc on the rubber pad and screw the lock nut onto the spindle. To tighten the lock nut, press the shaft lock firmly so that the spindle cannot revolve, then use the lock nut wrench and securely tighten clockwise. To remove the disc, follow the installation procedure in reverse.

OPERATION

WARNING:

• It should never be necessary to force the tool. The weight of the tool applies adequate pressure. Forcing and excessive pressure could cause dangerous wheel breakage.
• ALWAYS replace the wheel if the tool is dropped while grinding.
• NEVER bang or hit a grinding disc or wheel onto work.
• Avoid bouncing and snagging the wheel, especially when working corners, sharp edges etc. This can cause loss of control and kickback.
• NEVER use tools with wood cutting blades and other sawblades. Such blades when used on a grinder frequently kick and cause loss of control leading to personal injury.

CAUTION:

• Make the depth of a single cut up to 5 mm. Adjust the pressure on the tool so that the tool does not slow down during the operation.
• After operation, always switch off the tool and wait until the wheel has come to a complete stop before putting the tool down.
• If the tool is operated continuously until the battery cartridge has discharged, allow the tool to rest for 15 minutes before proceeding with a fresh battery.

Grinding and sanding operation

ALWAYS hold the tool firmly with one hand on housing and the other on the side handle. Turn the tool on and then apply the wheel or disc to the workpiece. In general, keep the edge of the wheel or disc at an angle of about 15 degrees to the workpiece surface. During the break-in period with a new wheel, do not work the grinder in the B direction or it will cut into the workpiece. Once the edge of the wheel has been rounded off by use, the wheel may be worked in both A and B direction.

Operation with diamond wheel (optional accessory )

CAUTION:

• Do not “jam” the 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, wheel breakage and overheating of the motor may occur.
• Do not start the cutting operation in the workpiece. Let the wheel reach full speed and carefully enter into the cut moving the tool forward over the workpiece surface. The wheel may bind, walk up or kickback if the power tool is started in the workpiece.
• A diamond wheel shall be operated perpendicular to the material being cut.

Operation with wire cup brush (optional accessory)

1. Wire cup brush

CAUTION:

• Check the operation of the brush by running the tool with no load, ensuring that no one is in front of or in line with a brush.
• Do not use a brush that is damaged, or which is out of balance. The use of a damaged brush could increase the potential for injury from contact with broken brush wires.

Remove the battery cartridge from the tool and place it upside down allowing easy access to the spindle. Remove any accessories on the spindle. Thread wire cup brush onto the spindle and tighten with the supplied wrench. When using a brush, avoid applying too much pressure which causes the overbending of wires, leading to premature breakage.

Operation with wire wheel brush (optional accessory)

1. Wire wheel brush

CAUTION:

• Check the operation of the wire wheel brush by running the tool with no load, ensuring that no one is in front of or in line with the wire wheel brush.
• Do not use a wire wheel brush that is damaged, or which is out of balance. The use of a damaged wire wheel brush could increase the potential for injury from contact with broken wires.
• ALWAYS use a guard with wire wheel brushes, assuring the diameter of the wheel fits inside the guard. The wheel can shatter during use and the guard helps to reduce chances of personal injury.

Remove the battery cartridge from the tool and place it upside down allowing easy access to the spindle. Remove any accessories on the spindle. Thread wire wheel brush onto the spindle and tighten with the wrenches. When using a wire wheel brush, avoid applying too much pressure which causes overbending of wires, leading to premature breakage.

Operation with abrasive cut-off wheel

1. Lock nut
2. Abrasive cut-off wheel
3. Inner flange
4. Wheel guard for cut-off wheel

WARNING:

• When using an abrasive cut-off wheel, be sure to use only the special wheel guard designed for use with cut-off wheels.
• NEVER use the cut-off wheel for side grinding.
• Do not “jam” the 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, wheel breakage and overheating of the motor may occur.
• Do not start the cutting operation in the workpiece. Let the wheel reach full speed and carefully enter into the cut moving the tool forward over the workpiece surface. The wheel may bind, walk up or kick back if the power tool is started in the workpiece.
• During cutting operations, never change the angle of the wheel. Placing side pressure on the cut-off wheel (as in grinding) will cause the wheel to crack and break, causing serious personal injury.

MAINTENANCE

CAUTION:

• Always be sure that the tool is switched off and the battery cartridge is removed before attempting to perform inspection or maintenance.
• Never use gasoline, benzine, thinner, alcohol or the like. Discoloration, deformation or cracks may result.

1. Exhaust vent
2. Inhalation vent

The tool and its air vents have to be kept clean. Regularly clean the tool’s air vents or whenever the vents start to become obstructed.

Replacing carbon brushes

1. Limit mark

Remove and check the carbon brushes regularly. Replace them when they wear down to the limit mark. Keep the carbon brushes clean and free to slip into the holders. Both carbon brushes should be replaced at the same time. Use only identical carbon brushes. Insert the top end of the slotted bit screwdriver into the notch in the tool and remove the holder cap cover by lifting it.

1. Holder cap cover
2. Screwdriver

Use a screwdriver to remove the brush holder caps. Take out the worn carbon brushes, insert the new ones and secure the brush holder caps.

1. Brush holder cap
2. Screwdriver

Reinstall the holder cap cover on the tool. To maintain product SAFETY and RELIABILITY, repairs, and any other maintenance or adjustment should be performed by Makita Authorized or Factory Service Centers, always using Makita replacement parts.

OPTIONAL ACCESSORIES

CAUTION:

• These accessories or attachments are recommended for use with your Makita tool specified in this manual. The use of any other accessories or attachments might present a risk of injury to persons. Only use accessory or attachment for its stated purpose.
• Your tool is supplied with a guard for use with a depressed centre grinding wheel, multi-disc, diamond wheel, flex wheel and wire wheel brush. A cut-off wheel can also be used with an optional guard. If you decide to use your Makita grinder with approved accessories which you purchase from your Makita distributor or factory service center, be sure to obtain and use all necessary fasteners and guards as recommended in this manual. Your failure to do so could result in personal injury to you and others.

If you need any assistance with more details regarding these accessories, ask your local Makita Service Center.

• Makita genuine battery and charger

NOTE:
Some items in the list may be included in the tool package as standard accessories. They may differ from country to country.

LIMITED ONE-YEAR WARRANTY Warranty Policy

Every Makita tool is thoroughly inspected and tested before leaving the factory. It is warranted to be free of defects from workmanship and materials for ONE YEAR from the date of original purchase. Should any trouble develop during this one year, return the COMPLETE tool, freight prepaid, to one of Makita’s Factory or Authorized Service Centers. If inspection shows the trouble is caused by defective workmanship or material, Makita will repair (or at our option, replace) without charge.

This Warranty does not apply where:

• repairs have been made or attempted by others:
• repairs are required because of normal wear and tear:
• the tool has been abused, misused or improperly maintained:
• alterations have been made to the tool.

IN NO EVENT SHALL MAKITA BE LIABLE FOR ANY INDIRECT, INCIDENTAL OR CONSEQUENTIAL DAMAGES FROM THE SALE OR USE OF THE PRODUCT. THIS DISCLAIMER APPLIES BOTH DURING AND AFTER THE TERM OF THIS WARRANTY. MAKITA DISCLAIMS LIABILITY FOR ANY IMPLIED WARRANTIES, INCLUDING IMPLIED WARRANTIES OF “MERCHANTABILITY” AND “FITNESS FOR A SPECIFIC PURPOSE,” AFTER THE ONE-YEAR TERM OF THIS WARRANTY.

This Warranty gives you specific legal rights, and you may also have other rights that vary from state to state. Some states do not allow the exclusion or limitation of incidental or consequential damages, so the above limitation or exclusion may not apply to you. Some states do not allow limitations on how long an implied warranty lasts, so the above limitation may not apply to you.

WARNING
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.

Makita Corporation

• 3-11-8, Sumiyoshi-cho, Anjo, Aichi 446-8502 Japan
• www.makita.com.

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