makita DHR280 Cordless Rotary Hammer Instruction Manual

makita DHR280 Cordless Rotary Hammer Instruction Manual

SPECIFICATIONS

Optional accessory

Model:| DX03 (For DHR280/DHR282)| DX04 (For DHR281/DHR283)
---|---|---
Suction performance| 350 l/min
Operating stroke| Up to 190 mm
Suitable drill bit| Up to 260 mm
Rated voltage| D.C. 18 V
Net weight| 1.4 kg| 1.5 kg

• Due to our continuing program of research and development, the specifications herein are subject to change without notice.
• Specifications and battery cartridge may differ from country to country.
• The weight may differ depending on the attachment(s), including the battery cartridge. The lightest and heaviest combination, according to EPTA-Procedure 01/2014, are shown in the table.

Applicable battery cartridge
BL1815N / BL1820 / BL1820B / BL1830 / BL1830B / BL1840 / BL1840B / BL1850 / BL1850B / BL1860B
Some of the battery cartridges listed above may not be available depending on your region of residence.

WARNING: Only use the battery cartridges listed above. Use of any other battery cartridges may cause injury and/or fire.

Intended use

The tool is intended for hammer drilling and drilling in brick, concrete and stone as well as for chiselling work.
It is also suitable for drilling without impact in wood, metal, ceramic and plastic.

Noise

The typical A-weighted noise level determined according to EN60745:

Model DHR280
Sound pressure level (LpA) : 93 dB(A)
Sound power level (LWA) : 104 dB (A)
Uncertainty (K) : 3 dB(A)

Model DHR281
Sound pressure level (LpA) : 92 dB(A)
Sound power level (LWA) : 103 dB (A)
Uncertainty (K) : 3 dB(A)

Model DHR282
Sound pressure level (LpA) : 93 dB(A)
Sound power level (LWA) : 104 dB (A)
Uncertainty (K) : 3 dB(A)

Model DHR283
Sound pressure level (LpA) : 92 dB(A)
Sound power level (LWA) : 103 dB (A)
Uncertainty (K) : 3 dB(A)

Model DHR280 with DX03
Sound pressure level (LpA) : 92 dB(A)
Sound power level (LWA) : 103 dB (A)
Uncertainty (K) : 3 dB(A)

Model DHR281 with DX04
Sound pressure level (LpA) : 92 dB(A)
Sound power level (LWA) : 103 dB (A)
Uncertainty (K) : 3 dB(A)

Model DHR282 with DX03
Sound pressure level (LpA) : 92 dB(A)
Sound power level (LWA) : 103 dB (A)
Uncertainty (K) : 3 dB(A)

Model DHR283 with DX04
Sound pressure level (LpA) : 92 dB(A)
Sound power level (LWA) : 103 dB (A)
Uncertainty (K) : 3 dB(A)

WARNING: Wear ear protection.

Vibration

The vibration total value (tri-axial vector sum) determined according to EN60745:

Model DHR280
Work mode: hammer drilling into concrete
Vibration emission (ah, HD): 9.0 m/s2
Uncertainty (K) : 1.5 m/s2
Work mode: hammer drilling into concrete with DX03
Vibration emission (ah, HD): 8.0 m/s2
Uncertainty (K) : 1.5 m/s2
Work mode: chiselling function with side grip
Vibration emission (ah, Cheq): 8.5 m/s2
Uncertainty (K) : 1.5 m/s2
Work mode: drilling into metal
Vibration emission (ah,D) : 2.5 m/s2
Uncertainty (K) : 1.5 m/s2

Model DHR281
Work mode: hammer drilling into concrete
Vibration emission (ah, HD): 9.5 m/s2
Uncertainty (K) : 1.5 m/s2
Work mode: hammer drilling into concrete with DX04
Vibration emission (ah, HD): 8.0 m/s2
Uncertainty (K) : 1.5 m/s2
Work mode: chiselling function with side grip
Vibration emission (ah, Cheq): 9.0 m/s2
Uncertainty (K) : 1.5 m/s2
Work mode: drilling into metal
Vibration emission (ah,D) : 2.5 m/s2
Uncertainty (K) : 1.5 m/s2

Model DHR282
Work mode: hammer drilling into concrete
Vibration emission (ah, HD): 9.0 m/s2
Uncertainty (K) : 1.5 m/s2
Work mode: hammer drilling into concrete with DX03
Vibration emission (ah, HD): 8.0 m/s2
Uncertainty (K) : 1.5 m/s2
Work mode: chiselling function with side grip
Vibration emission (ah, Cheq): 8.0 m/s2
Uncertainty (K) : 1.5 m/s2
Work mode: drilling into metal
Vibration emission (ah,D) : 2.5 m/s2
Uncertainty (K) : 1.5 m/s

Model DHR283
Work mode: hammer drilling into concrete
Vibration emission (ah, HD): 9.5 m/s2
Uncertainty (K) : 1.5 m/s2
Work mode: hammer drilling into concrete with DX04
Vibration emission (ah, HD): 8.0 m/s2
Uncertainty (K) : 1.5 m/s2
Work mode: chiselling function with side grip
Vibration emission (ah, Cheq): 8.5 m/s2
Uncertainty (K) : 1.5 m/s2
Work mode: drilling into metal
Vibration emission (ah,D) : 2.5 m/s2
Uncertainty (K) : 1.5 m/s

NOTE: The declared vibration emission value has been measured in accordance with the standard test method and may be used for comparing one tool with another.

NOTE: The declared vibration emission value may also be used in a preliminary assessment of exposure.

WARNING: The vibration emission during actual use of the power tool can differ from the declared emission value depending on the ways in which the tool is used.

WARNING: Be sure to identify safety measures to protect the operator that are based on an estimation of exposure in the actual conditions of use (taking account of all parts of the operating cycle such as the times when the tool is switched off and when it is running idle in addition to the trigger time).

EC Declaration of Conformity

For European countries only

The EC declaration of conformity is included as Annex A to this instruction manual.

SAFETY WARNINGS

General power tool safety warnings

WARNING: 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.

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.

CORDLESS ROTARY HAMMER SAFETY WARNINGS

1. Wear ear protectors. Exposure to noise can cause hearing loss.

2. Use auxiliary handle(s), if supplied with the tool. Loss of control can cause personal injury.

3. Hold power tool by insulated gripping surfaces, when performing an operation where the cutting accessory may contact hidden wiring. Cutting accessory contacting a “live” wire may make exposed metal parts of the power tool “live” and could give the operator an electric shock.

4. Wear a hard hat (safety helmet), safety glasses and/or face shield. Ordinary eye or sun glasses are NOT safety glasses. It is also highly recommended that you wear a dust mask and thickly padded gloves.

5. Be sure the bit is secured in place before operation.

6. Under normal operation, the tool is designed to produce vibration. The screws can come loose easily, causing a breakdown or accident.
   Check tightness of screws carefully before operation.

7. In cold weather or when the tool has not been used for a long time, let the tool warm up for a while by operating it under no load. This will loosen up the lubrication. Without proper warm-up, hammering operation is difficult.

8. Always be sure you have a firm footing. Be sure no one is below when using the tool in high locations.

9. Hold the tool firmly with both hands.

10. Keep hands away from moving parts.

11. Do not leave the tool running. Operate the tool only when hand-held.

12. Do not point the tool at any one in the area when operating. The bit could fly out and injure someone seriously.

13. Do not touch the bit, parts close to the bit, or workpiece immediately after operation; they may be extremely hot and could burn your skin.

14. Some material contains chemicals which may be toxic. Take caution to prevent dust inhalation and skin contact. Follow material supplier safety data.

15. Always be sure that the tool is switched off and the battery cartridge and the bit are removed before handing the tool to other person.

SAVE THESE INSTRUCTIONS.

WARNING: DO NOT let comfort or familiarity with product (gained from repeated use) replace strict adherence to safety rules for the subject product. MISUSE or failure to follow the safety rules stated in this instruction manual may cause serious personal injury.

Important safety instructions for battery cartridge

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

2. Do not disassemble 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 cartridge in a container with other metal objects such as nails, coins, etc.

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

9. 6. Do not store the tool and battery cartridge in
   locations where the temperature may reach or
   exceed 50 °C (122 °F).
   7. Do not incinerate the battery cartridge even if
   it is severely damaged or is completely worn
   out. The battery cartridge can explode in a fire.
   8. Be careful not to drop or strike battery.
   9. Do not use a damaged battery.
   10. The contained lithium-ion batteries are subject
   to the Dangerous Goods Legislation requirements.
   For commercial transports e.g. by third parties,
   forwarding agents, special requirement on packaging and labeling must be observed.
   For preparation of the item being shipped, consulting an expert for hazardous material is required.
   Please also observe possibly more detailed national regulations.
   Tape or mask off open contacts and pack up the battery in such a manner that it cannot move around in the packaging.

10. Follow your local regulations relating to disposal of battery.

11. Use the batteries only with the products specified by Makita. Installing the batteries to non-compliant products may result in a fire, excessive heat, explosion, or leak of electrolyte.

CAUTION: Only use genuine Makita batteries.
Use of non-genuine Makita batteries, or batteries that have been altered, may result in the battery bursting causing fires, personal injury and damage. It will also void the Makita warranty for the Makita tool and charger.

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 with room temperature at 10 °C – 40 °C (50 °F – 104 °F). Let a hot battery cartridge cool down before charging it.
4. Charge the battery cartridge if you do not use it for a long period (more than six months).

Important safety instructions for wireless unit

1. Do not disassemble or tamper with the wireless unit.
2. Keep the wireless unit away from young children. If accidentally swallowed, seek medical attention immediately.
3. Use the wireless unit only with Makita tools.
4. Do not expose the wireless unit to rain or wet conditions.
5. Do not use the wireless unit in places where the temperature exceeds 50°C (122°F).
6. Do not operate the wireless unit in places where medical instruments, such as heart pace makers are near by.
7. Do not operate the wireless unit in places where automated devices are near by. If operated, automated devices may develop malfunction or error.
8. The wireless unit can produce electromagnetic fields (EMF) but they are not harmful to the user.
9. The wireless unit is an accurate instrument. Be careful not to drop or strike the wireless unit.
10. Avoid touching the terminal of the wireless unit with bare hands or metallic materials.
11. Always remove the battery on the tool when installing the wireless unit.
12. When opening the lid of the slot, avoid the place where dust and water may come into the slot. Always keep the inlet of the slot clean.
13. Always insert the wireless unit in the correct direction.
14. Do not press the wireless activation button on the wireless unit too hard and/or press the button with an object with a sharp edge.
15.  Always close the lid of the slot when operating.
16. Do not remove the wireless unit from the slot while the power is being supplied to the tool. Doing so may cause a malfunction of the wireless unit.
17. Do not remove the sticker on the wireless unit.
18. Do not put any sticker on the wireless unit.
19. Do not leave the wireless unit in a place where static electricity or electrical noise could be generated.
20. Do not leave the wireless unit in a place subject to high heat, such as a car sitting in the sun.
21. Do not leave the wireless unit in a dusty or powdery place or in a place corrosive gas could be generated.
22. Sudden change of the temperature may bedew the wireless unit. Do not use the wireless unit until the dew is completely dried.
23. When cleaning the wireless unit, gently wipe with a dry soft cloth. Do not use benzine, thinner, conductive grease or the like.
24. When storing the wireless unit, keep it in the supplied case or a static-free container.
25. Do not insert any devices other than Makita wireless unit into the slot on the tool.
26. Do not use the tool with the lid of the slot damaged. Water, dust, and dirt come into the slot may cause malfunction.
27. Do not pull and/or twist the lid of the slot more than necessary. Restore the lid if it comes off from the tool.
28. Replace the lid of the slot if it is lost or damaged.

FUNCTIONAL DESCRIPTION

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

Installing or removing battery cartridge

CAUTION: Always switch off the tool before installing or removing of the battery cartridge.

CAUTION: Hold the tool and the battery cartridge firmly when installing or removing 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.

Fig.1:

1. Red indicator
2. Button
3. Battery cartridge

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 all the way 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.

CAUTION: Do not install the battery cartridge forcibly. If the cartridge does not slide in easily, it is not being inserted correctly.

Indicating the remaining battery capacity

Only for battery cartridges with the indicator

Fig.2:

1. Indicator lamps
2. Check button

Press the check button on the battery cartridge to indicate the remaining battery capacity. The indicator lamps light up for a few seconds.

Lighted|
Off| Blinking
| 75% to 100%
| 50% to 75%
| 25% to 50%
| 0% to 25%
| Charge the battery.
| The battery may have malfunctioned.

NOTE: Depending on the conditions of use and the ambient temperature, the indication may differ slightly from the actual capacity.

Tool / battery protection system

The tool is equipped with a tool/battery protection system. This system automatically cuts off power to the motor to extend tool and battery life. The tool will automatically stop during operation if the tool or battery is placed under one of the following conditions:

Overload protection

When the battery is operated in a manner that causes it to draw an abnormally high current, the tool automatically stops without any indication. 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.

Overheat protection

When the tool or battery is overheated, the tool stops automatically. In this case, let the tool and battery cool before turning the tool on again.

NOTE: When the tool is overheated, the lamp blinks.

Overdischarge protection

When the battery capacity is not enough, the tool stops automatically. In this case, remove the battery from the tool and charge the battery.

Switch action

WARNING: Before installing the battery cartridge into the tool, always check to see that the switch trigger actuates properly and returns to the “OFF” position when released.

Fig.3:

Switch trigger

To start the tool, simply pull the switch trigger. Tool speed is increased by increasing pressure on the switch trigger. Release the switch trigger to stop.

Speed change

The revolutions and blows per minute can be adjusted by turning the adjusting dial. The dial is marked 1 (lowest speed) to 5 (full speed).

Fig.4:

Adjusting dial

Refer to the table below for the relationship between the number on the adjusting dial and the revolutions and blows per minute.

CAUTION: Do not turn the adjusting dial when the tool is running. Failure to do so may result in the loss of control of the tool and cause an injury.

NOTICE: If the tool is operated continuously at low speed for a long time, the motor will get overloaded, resulting in tool malfunction.

NOTICE: The speed adjusting dial can be turned only as far as 5 and back to 1. Do not force it past 5 or 1, or the speed adjusting function may no longer work

NOTE: Soft no-load rotation function (For DHR282/DHR283)

When the speed adjusting dial is set to “3” or higher, the tool automatically reduces the speed at no-load to reduce the vibration under no-load. Once operation starts with a bit against concrete, blows per minute increase and reach the numbers as shown in the table. When temperature is low and there is less fluidity in grease, the tool may not have this function even with the motor rotating.

This function is not available when the dust collection system is installed.

Lighting up the front lamp

Fig.5:

Lamp

CAUTION: Do not look in the light or see the source of light directly.

Pull the switch trigger to light up the lamp. The lamp keeps on lighting while the switch trigger is being pulled. The lamp goes out approximately 10 seconds after releasing the switch trigger

CAUTION: For DHR282/DHR283
If the lamp goes off after blinking for a few seconds, the active feedback sensing technology or the soft no-load rotation function is not working properly. Ask your local Makita Service Center for repair.

NOTE: Use a dry cloth to wipe the dirt off the lens of the lamp. Be careful not to scratch the lens of lamp, or it may lower the illumination.

NOTE: If the dust collection system is installed on the tool, the lamp of the dust collection system lights up instead of the lamp of the tool.

Reversing switch action

Fig.6:

Reversing switch lever

CAUTION: Always check the direction of rotation before operation.

CAUTION: Use the reversing switch only after the tool comes to a complete stop. Changing the direction of rotation before the tool stops may damage the tool.

CAUTION: When not operating the tool, always set the reversing switch lever to the neutral position.

This tool has a reversing switch to change the direction of rotation. Depress the reversing switch lever from the A side for clockwise rotation or from the B side for counterclockwise rotation.
When the reversing switch lever is in the neutral position, the switch trigger cannot be pulled.

Changing the quick change chuck for SDS-plus

For DHR281/DHR283

The quick change chuck for SDS-plus can be easily exchanged for the quick change drill chuck.

Removing the quick change chuck for SDS-plus

CAUTION: Before removing the quick change chuck for SDS-plus, be sure to remove the bit.

Grasp the change cover of the quick change chuck for SDS-plus and turn in the direction of the arrow until the change cover line moves from the symbol to the symbol. Pull forcefully in the direction of the arrow.

Fig.7:

1. Quick change chuck for SDS-plus
2. Change cover 3. Change cover line

Installing the quick change drill chuck

Check the line of the quick change drill chuck shows the symbol. Grasp the change cover of the quick change drill chuck and set the line to the symbol.
Place the quick change drill chuck on the spindle of the tool. Grasp the change cover of the quick change drill chuck and turn the change cover line to the symbol until a click can clearly be heard.

Fig.8:

1. Quick change drill chuck
2. Spindle
3. Change cover line
4. Change cover

Selecting the action mode

NOTICE: Do not rotate the action mode changing knob when the tool is running. The tool will be damaged.
NOTICE: To avoid rapid wear on the mode change mechanism, be sure that the action mode changing knob is always positively located in one of the three action mode positions.

Rotation with hammering

For drilling in concrete, masonry, etc., rotate the action mode changing knob to the symbol. Use a tungstencarbide tipped bit (optional accessory).

Fig.9:

1. Rotation with hammering
2. Action mode changing knob

Rotation only

For drilling in wood, metal or plastic materials, rotate the action mode changing knob to the symbol. Use a twist drill bit or wood drill bit.

Fig.10:

Rotation only

Hammering only

For chipping, scaling or demolition operations, rotate the action mode changing knob to the symbol. Use a bull point, cold chisel, scaling chisel, etc.

Fig.11:

Hammering only

Hook

CAUTION: Never hook the tool at high location or on potentially unstable surface.

Fig.12:

Hook

The hook is convenient for temporarily hanging the tool.
To use the hook, simply lift up hook until it snaps into the open position. When not in use, always lower hook until it snaps into the closed position

Adjusting the nozzle position of the dust collection system

Optional accessory

Push in the guide while pushing up the guide adjustment button, and then release the button at the desired position.

Fig.13:

1. Guide
2. Guide adjustment button

NOTE: Before adjusting the nozzle position, release the nozzle forward completely by pushing up the guide adjustment button.

If a long drill bit is installed, extend the guide by pushing up the extension button.

Fig.14:

Extension button

Adjusting the drilling depth of the dust collection system

Optional accessory

Slide the depth adjustment button to the desired position while pushing it up. The distance (A) is the drilling depth.

Fig.15:

Depth adjustment button

Torque limiter

NOTICE: As soon as the torque limiter actuates, switch off the tool immediately. This will help prevent premature wear of the tool.
NOTICE: Drill bits such as hole saw, which tend to pinch or catch easily in the hole, are not appropriate for this tool. This is because they will cause the torque limiter to actuate too frequently.

The torque limiter will actuate when a certain torque level is reached. The motor will disengage from the output shaft. When this happens, the drill bit will stop turning.

Electronic function

The tool is equipped with the electronic functions for easy operation.

• Constant speed control
  The speed control function provides the constant rotation speed regardless of load conditions.

• Active Feedback sensing Technology (For DHR282/DHR283)
  If the tool is swung at the predetermined acceleration during operation, the motor is forcibly stopped to reduce the burden on the wrist.

NOTE: This function does not work if the acceleration does not reach the predetermined one when the tool is swung.

NOTE: If the bit is swung at the predetermined acceleration during chipping, scaling, or demolishing, the motor is forcibly stopped. In this case, release the switch trigger, and then pull the switch trigger to restart the tool.

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.

Side grip (auxiliary handle)

CAUTION: Always use the side grip to ensure safe operation.

CAUTION: After installing or adjusting the side grip, make sure that the side grip is firmly secured.

To install the side grip, follow the steps below.

1. Loosen the thumb screw on the side grip.
   Fig.16:
   Thumb screw

2. Attach the side grip while pressing the thumb screw so that the grooves on the grip fit in the protrusions on the tool barrel.
   Fig.17:
   Thumb screw

3. Tighten the thumb screw to secure the grip. The grip can be fixed at desired angle.

Grease

Coat the shank end of the drill bit beforehand with a small amount of grease (about 0.5 – 1 g).
This chuck lubrication assures smooth action and longer service life.

Installing or removing drill bit

Clean the shank end of the drill bit and apply grease before installing the drill bit.

Fig.18:

1. Shank end
2. Grease

Insert the drill bit into the tool. Turn the drill bit and push it in until it engages.
After installing the drill bit, always make sure that the drill bit is securely held in place by trying to pull it out.
Fig.19:
Drill bit

To remove the drill bit, pull the chuck cover down all the way and pull the drill bit out.

Fig.20:

1. Drill bit
2. Chuck cover

Chisel angle (when chipping, scaling or demolishing)

The chisel can be secured at the desired angle. To change the chisel angle, rotate the action mode changing knob to the O symbol. Turn the chisel to the desired angle.

Fig.21:
Action mode changing knob

Rotate the action mode changing knob to the symbol. Then make sure that the chisel is securely held in place by turning it slightly.

Depth gauge

The depth gauge is convenient for drilling holes of uniform depth.
Press and hold the lock button, and then insert the depth gauge into the hex hole. Make sure that the toothed side of the depth gauge faces the marking.

Fig.22:

1. Depth gauge
2. Lock button
3. Marking
4.  Toothed side

Adjust the depth gauge by moving it back and forth while pressing the lock button. After the adjustment, release the lock button to lock the depth gauge.

NOTE: Make sure that the depth gauge does not touch the main body of the tool when attaching it.

Installing or removing the dust collection system

Optional accessory

To install the dust collection system, insert the tool into the dust collection system all the way until it locks in place with a little double click.
Fig.23

To remove the dust collection system, pull the tool while pressing the lock- off button.
Fig.24:
Lock-off button

Dust cup

Optional accessory

Use the dust cup to prevent dust from falling over the tool and on yourself when performing overhead drilling operations. Attach the dust cup to the bit as shown in the figure. The size of bits which the dust cup can be attached to is as follows.

Fig.25:
Dust cup

Dust cup set

Optional accessory

Before installing the dust cup set, remove the bit from the tool if installed.
Install the dust cup set on the tool so that the symbol on the dust cup is aligned with the groove in the tool.
Fig.26:

1.  symbol
2. Groove

NOTE: If you connect a vacuum cleaner to the dust cup set, remove the dust cap before connecting it.

Fig.27:
Dust cap

To remove the dust cup set, remove the bit while pulling the chuck cover in the direction of the arrow.
Fig.28:

1. Bit
2. Chuck cover

Hold the root of dust cup and pull it out.
Fig.29

NOTE: If the cap comes off from the dust cup, attach it with its printed side facing up so that groove on the cap fits in the inside periphery of the attachment.

Fig.30

OPERATION

CAUTION: Always use the side grip (auxiliary handle) and firmly hold the tool by both side grip and switch handle during operations.

CAUTION: Always make sure that the workpiece is secured before operation.

CAUTION: Do not pull the tool out forcibly even the bit gets stuck. Loss of control may cause injury.

CAUTION: The dust collection system is intended for drilling in concrete only. Do not use the dust collection system for drilling in metal or  wood.

CAUTION: When using the tool with the dust collection system, be sure to attach the filter to the dust collection system to prevent dust inhalation.

CAUTION: Before using the dust collection system, check that the filter is not damaged. Failure to do so may cause dust inhalation.

CAUTION: The dust collection system collects the generated dust at a considerable rate, but not all dust can be collected.

NOTICE: Do not use the dust collection system for core drilling or chiseling.

NOTICE: Do not use the dust collection system for drilling in wet concrete or use this system in wet environment. Failure to do so may cause malfunction.

NOTE: If the battery cartridge is in low temperature, the tool’s capability may not be fully obtained. In this case, warm up the battery cartridge by using the tool with no load for a while to fully obtain the tool’s capability.

Fig.31

Hammer drilling operation

CAUTION: There is tremendous and sudden twisting force exerted on the tool/drill bit at the time of hole break-through, when the hole becomes clogged with chips and particles, or when striking reinforcing rods embedded in the concrete. Always use the side grip (auxiliary handle) and firmly hold the tool by both side grip and switch handle during operations. Failure to do so may result in the loss of control of the tool and potentially severe injury.

Set the action mode changing knob to the symbol.
Position the drill bit at the desired location for the hole, then pull the switch trigger. Do not force the tool. Light pressure gives best results. Keep the tool in position and prevent it from slipping away from the hole.
Do not apply more pressure when the hole becomes clogged with chips or particles. Instead, run the tool at an idle, then remove the drill bit partially from the hole.
By repeating this several times, the hole will be cleaned out and normal drilling may be resumed.

NOTE: Eccentricity in the drill bit rotation may occur while operating the tool with no load. The tool automatically centers itself during operation. This does not affect the drilling precision.

Chipping/Scaling/Demolition

Set the action mode changing knob to the symbol.
Hold the tool firmly with both hands. Turn the tool on and apply slight pressure on the tool so that the tool will not bounce around, uncontrolled.
Pressing very hard on the tool will not increase the efficiency.
Fig.32

Drilling in wood or metal

CAUTION: Hold the tool firmly and exert care when the drill bit begins to break through the workpiece. There is a tremendous force exerted on the tool/drill bit at the time of hole break through.

CAUTION: A stuck drill bit can be removed simply by setting the reversing switch to reverse rotation in order to back out. However, the tool may back out abruptly if you do not hold it firmly.

CAUTION: Always secure workpieces in a vise or similar hold-down device.

NOTICE: Never use “rotation with hammering” when the drill chuck is installed on the tool. The drill chuck may be damaged.
Also, the drill chuck will come off when reversing the tool.

NOTICE: Pressing excessively on the tool will not speed up the drilling. In fact, this excessive pressure will only serve to damage the tip of your drill bit, decrease the tool performance and shorten the service life of the tool.

For DHR280/DHR282

Optional accessory

Attach the chuck adapter to a keyless drill chuck to which 1/2″-20 size screw can be installed, and then install them to the tool. When installing it, refer to the section “Installing or removing drill bit”.

Fig.33:

1. Keyless drill chuck
2. Chuck adapter

For DHR281/DHR283

Use the quick change drill chuck as standard equipment. When installing it, refer to “changing the quick change chuck for SDS-plus”.
Hold the ring and turn the sleeve counterclockwise to open the chuck jaws. Place the bit in the chuck as far as it will go. Hold the ring firmly and turn the sleeve clockwise to tighten the chuck.

Fig.34:

1. Sleeve
2. Ring

To remove the bit, hold the ring and turn the sleeve counterclockwise.

Diamond core drilling

NOTICE: If performing diamond core drilling operations using “rotation with hammering” action, the diamond core bit may be damaged.

When performing diamond core drilling operations, always set the change lever to the position to use “rotation only” action.

Disposing of dust

Optional accessory

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

CAUTION: Be sure to wear dust mask when disposing of dust.

CAUTION: Empty the dust case regularly before the dust case becomes full. Failure to do so may decrease the dust collection performance and cause dust inhalation.

CAUTION: The performance of dust collection decreases if the filter in the dust case become clogged. Replace the filter with new one after approximately 200 times of dust fulfillment as a guide. Failure to do so may cause dust inhalation.

1. Remove the dust case while pressing down the lever of the dust case.
   Fig.35:
   Lever

2. Open the cover of the dust case.
   Fig.36:
   Cover

3. Dispose of the dust, and then clean the filter.
   Fig.37

NOTICE: When cleaning the filter, do not touch the filter with brush or similar, or blow compressed air on the filter. It may damage the filter.

Blow-out bulb

Optional accessory

After drilling the hole, use the blow-out bulb to clean the dust out of the hole.
Fig.38

Using dust cup set

Optional accessory

Fit the dust cup set against the ceiling when operating the tool.
Fig.39

NOTICE: Do not use the dust cup set when drilling in metal or similar. It may damage the dust cup set due to the heat produced by small metal dust or similar.

NOTICE: Do not install or remove the dust cup set with the drill bit installed in the tool. It may damage the dust cup set and cause dust leak.

WIRELESS ACTIVATION FUNCTION

Optional accessory for DHR282/DHR283

What you can do with the wireless activation function

The wireless activation function enables clean and comfortable operation. By connecting a supported vacuum cleaner to the tool, you can run the vacuum cleaner automatically along with the switch operation of the tool.
Fig.40

To use the wireless activation function, prepare following items:

• A wireless unit (optional accessory)
• A vacuum cleaner which supports the wireless activation function

The overview of the wireless activation function setting is as follows. Refer to each section for detail procedures.

1. Installing the wireless unit
2. Tool registration for the vacuum cleaner
3. Starting the wireless activation function

Installing the wireless unit

Optional accessory

CAUTION: Place the tool on a flat and stable surface when installing the wireless unit.

NOTICE: Clean the dust and dirt on the tool before installing the wireless unit. Dust or dirt may cause malfunction if it comes into the slot of the wireless unit.

NOTICE: To prevent the malfunction caused by static, touch a static discharging material, such as a metal part of the tool, before picking up the wireless unit.

NOTICE: When installing the wireless unit, always be sure that the wireless unit is inserted in the correct direction and the lid is completely closed.

1. Open the lid on the tool as shown in the figure.
   Fig.41:
   Lid

2. Insert the wireless unit to the slot and then close the lid.

When inserting the wireless unit, align the projections
with the recessed portions on the slot.
Fig.42:

1. Wireless unit
2. Projection
3. Lid
4. Recessed portion

When removing the wireless unit, open the lid slowly.
The hooks on the back of the lid will lift the wireless unit as you pull up the lid.
Fig.43:

1. Wireless unit
2. Hook
3. Lid

After removing the wireless unit, keep it in the supplied case or a static- free container.

NOTICE: Always use the hooks on the back of the lid when removing the wireless unit. If the hooks do not catch the wireless unit, close the lid completely and open it slowly again.

Tool registration for the vacuum cleaner

NOTE: A Makita vacuum cleaner supporting the wireless activation function is required for the tool registration.

NOTE: Finish installing the wireless unit to the tool before starting the tool registration.

NOTE: During the tool registration, do not pull the switch trigger or turn on the power switch on the vacuum cleaner.

NOTE: Refer to the instruction manual of the vacuum cleaner, too.

If you wish to activate the vacuum cleaner along with the switch operation of the tool, finish the tool registration beforehand.

1. Install the batteries to the vacuum cleaner and the tool.

2. Set the stand-by switch on the vacuum cleaner to “AUTO”.
   Fig.44:
   Stand-by switch

3. Press the wireless activation button on the vacuum cleaner for 3 seconds until the wireless activation lamp blinks in green. And then press the wireless activation button on the tool in the same way.
   Fig.45:
   

4. Wireless activation button

5. Wireless activation lamp

If the vacuum cleaner and the tool are linked successfully, the wireless activation lamps will light up in green for 2 seconds and start blinking in blue.

NOTE: The wireless activation lamps finish blinking in green after 20 seconds elapsed. Press the wireless activation button on the tool while the wireless activation lamp on the cleaner is blinking. If the wireless activation lamp does not blink in green, push the wireless activation button briefly and hold it down again.

NOTE: When performing two or more tool registrations for one vacuum cleaner, finish the tool registration one by one.

Starting the wireless activation function

NOTE: Finish the tool registration for the vacuum cleaner prior to the wireless activation.

NOTE: Refer to the instruction manual of the vacuum cleaner, too.

After registering a tool to the vacuum cleaner, the vacuum cleaner will automatically runs along with the switch operation of the tool.

1. Install the wireless unit to the tool.

2. Connect the hose of the vacuum cleaner with the tool.
   Fig.46

3. Set the stand-by switch on the vacuum cleaner to “AUTO”.
   Fig.47:
   Stand-by switch

4. Push the wireless activation button on the tool briefly. The wireless activation lamp will blink in blue.
   Fig.48:

5. Wireless activation button

6. Wireless activation lamp

7. Pull the switch trigger of the tool. Check if the vacuum cleaner runs while the switch trigger is being pulled.

To stop the wireless activation of the vacuum cleaner, push the wireless activation button on the tool.

NOTE: The wireless activation lamp on the tool will stop blinking in blue when there is no operation for 2 hours. In this case, set the stand-by switch on the vacuum cleaner to “AUTO” and push the wireless activation button on the tool again.

NOTE: The vacuum cleaner starts/stops with a delay.
There is a time lag when the vacuum cleaner detects a switch operation of the tool.

NOTE: The transmission distance of the wireless unit may vary depending on the location and surrounding circumstances.

NOTE: When two or more tools are registered to one vacuum cleaner, the vacuum cleaner may start running even if you don’t pull the switch trigger because an other user is using the wireless activation function.

Description of the wireless activation lamp status

Fig.49:

Wireless activation lamp

The wireless activation lamp shows the status of the wireless activation function. Refer to the table below for the meaning of the lamp status.

available. The lamp will automatically turn off when no operation is performed for 2 hours.
| When the tool is running.| The wireless activation of the vacuum cleaner is available and the tool is running.
Tool registration| Green| | 20 seconds| Ready for the tool registration. Waiting for the registration by the vacuum cleaner.
| 2 seconds| The tool registration has been finished. The wireless activation

lamp will start blinking in blue.

Cancelling tool registration| Red| | 20 seconds| Ready for the cancellation of the tool registration. Waiting for the cancellation by the vacuum cleaner.
****| 2 seconds| The cancellation of the tool registration has been finished. The

wireless activation lamp will start blinking in blue.

Others| Red| ****| 3 seconds| The power is supplied to the wireless unit and the wireless activa- tion function is starting up.
Off| –| –| The wireless activation of the vacuum cleaner is stopped.

Cancelling tool registration for the vacuum cleaner

Perform the following procedure when cancelling the tool registration for the vacuum cleaner.

1. Install the batteries to the vacuum cleaner and the tool.

2.  Set the stand-by switch on the vacuum cleaner to “AUTO”.
   Fig.50:

3. Stand-by switch

4. Press the wireless activation button on the vacuum cleaner for 6 seconds. The wireless activation lamp blinks in green and then become red. After that, press the wireless activation button on the tool in the same way.
   Fig.51:

5. Wireless activation button

6. Wireless activation lamp

If the cancellation is performed successfully, the wireless activation lamps will light up in red for 2 seconds and start blinking in blue

NOTE: The wireless activation lamps finish blinking in red after 20 seconds elapsed. Press the wireless activation button on the tool while the wireless activation lamp on the cleaner is blinking. If the wireless activation lamp does not blink in red, push the wireless activation button briefly and hold it down again.

Troubleshooting for wireless activation function

installed into the tool. The wireless unit is improperly installed into the tool.| Install the wireless unit correctly.
The terminal of the wireless unit and/or the slot is dirty.| Gently wipe off dust and dirt on the terminal of the wireless unit and clean the slot.
The wireless activation button on the tool has not been pushed.| Push the wireless activation button on the tool

briefly.

The stand-by switch on the vacuum cleaner is not set to “AUTO”.| Set the stand-by switch on the vacuum cleaner to “AUTO”.
No power supply| Supply the power to the tool and the vacuum cleaner.
Cannot finish tool registration / can- celling tool registration successfully.| The wireless unit is not installed into the tool. The wireless unit is improperly installed into the tool.| Install the wireless unit correctly.
The terminal of the wireless unit and/or the slot is dirty.| Gently wipe off dust and dirt on the terminal of the wireless unit and clean the slot.
The stand-by switch on the vacuum cleaner is not set to “AUTO”.| Set the stand-by switch on the vacuum cleaner to “AUTO”.
No power supply| Supply the power to the tool and the vacuum cleaner.
Incorrect operation| Push the wireless activation button briefly and perform

the tool registration/cancellation procedures again.

The tool and vacuum cleaner is away from each other (out of the transmission range).| Get the tool and vacuum cleaner closer to each other. The maximum transmission distance is approximately 10 m however it may vary according to the circumstances.
Before finishing the tool registration/

cancellation;

– the switch trigger on the tool is pulled or;

– the power button on the vacuum cleaner is turned on.

| Push the wireless activation button briefly and perform the tool registration/cancellation procedures again.
The tool registration procedures for the

tool or vacuum cleaner has not finished.

| Perform the tool registration procedures for both the tool and the vacuum cleaner at the same timing.
Radio disturbance by other appliances which generate high-intensity radio waves.| Keep the tool and vacuum cleaner away from the appli- ances such as Wi-Fi devices and microwave ovens.
The vacuum cleaner does not run along with the switch operation of the tool.| The wireless unit is not installed into the tool. The wireless unit is improperly installed into the tool.| Install the wireless unit correctly.
The terminal of the wireless unit and/or the slot is dirty.| Gently wipe off dust and dirt on the terminal of the wireless unit and clean the slot.
The wireless activation button on the tool has not been pushed.| Push the wireless activation button briefly and make

sure that the wireless activation lamp is blinking in blue.

The stand-by switch on the vacuum cleaner is not set to “AUTO”.| Set the stand-by switch on the vacuum cleaner to “AUTO”.
More than 10 tools are registered to the vacuum cleaner.| Perform the tool registration again.

If more than 10 tools are registered to the vacuum cleaner, the tool registered earliest will be cancelled automatically.

The vacuum cleaner erased all tool registrations.| Perform the tool registration again.
No power supply| Supply the power to the tool and the vacuum cleaner.
The tool and vacuum cleaner is away from each other (out of the transmission range).| Get the tool and vacuum cleaner closer each other. The maximum transmission distance is approximately 10 m however it may vary according to the circumstances.
Radio disturbance by other appliances which generate high-intensity radio waves.| Keep the tool and vacuum cleaner away from the appliances such as Wi- Fi devices and microwave ovens.
The vacuum cleaner runs while the tool’s switch trigger is not pulled.| Other users are using the wireless activation of the vacuum cleaner with their tools.| Turn off the wireless activation button of the other tools or cancel the tool registration of the other tools.

MAINTENANCE

CAUTION: Always be sure that the tool is switched off and the battery cartridge is removed before attempting to perform inspection or maintenance.

NOTICE: Never use gasoline, benzine, thinner, alcohol or the like. Discoloration, deformation or cracks may result.

To maintain product SAFETY and RELIABILITY, repairs, any other maintenance or adjustment should be performed by Makita Authorized or Factory Service Centers, always using Makita replacement parts.

Replacing filter of dust case

Optional accessory

1. Remove the dust case while pressing down the lever of the dust case.
   Fig.52:
   Lever

2. Insert the flat-blade screwdriver into the slots of the filter cover to remove the filter cover.
   Fig.53:
   

3. Flat-blade screwdriver

4. Filter cover

5. Remove the filter from the filter case.
   Fig.54:

6. Filter

7. Filter case

8. Attach a new filter to the filter case, and then attach the filter cover.

9.  Close the cover of the dust case, and then attach the dust case to the dust collection system.

Replacing sealing cap

Optional accessory

If the sealing cap is worn out, the performance of the dust collection decreases. Replace it if it’s worn out.
Remove the sealing cap, and then attach a new one with its protrusion facing upward.

Fig.55:

1. Protrusion
2. Sealing cap

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.

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

• Carbide-tipped drill bits (SDS-Plus carbide-tipped bits)
• Core bit
• Bull point
• Diamond core bit
• Cold chisel
• Scaling chisel
• Grooving chisel
• Chuck adapter
• Keyless drill chuck
• Bit grease
• Depth gauge
• Blow-out bulb
• Dust cup
• Dust cup set
• Dust collection system
• Wireless unit
• Makita genuine battery and charger
• Safety goggles
• Plastic carrying case

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

References

• MAKITA Industrial Power Tools - The Leader In Cordless with 18V LXT Lithium-Ion

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