makita DHK180 Cordless Power Scraper Instruction Manual

Cordless Power Scraper
INSTRUCTION MANUAL

DHK180

DHK180 Cordless Power Scraper

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SPECIFICATIONS

• Due to our continuing program of research and development, the specifications herein are subject to change without notice.
• Specifications 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 and charger

WARNING: Only use the battery cartridges and chargers listed above. Use of any other battery cartridges and chargers may cause injury and/or fire.
Recommended cord connected power source

• The cord connected power source(s) listed above may not be available depending on your region of residence.
• Before using the cord connected power source, read instruction and cautionary markings on them.

Intended use
The tool is intended for chiselling or scraping in concrete, brick, and stone.
Noise
The typical A-weighted noise level determined according to EN62841-2-6:
Sound pressure level (LpA) : 79 dB (A)
Uncertainty (K) : 2.26 dB (A)
The noise level under working may exceed 80 dB (A).
NOTE: The declared noise emission value(s) has been measured in accordance with a standard test method and may be used for comparing one tool with another.
NOTE: The declared noise emission value(s) may also be used in a preliminary assessment of exposure.
WARNING: Wear ear protection.
WARNING: The noise emission during actual use of the power tool can differ from the declared value(s) depending on the ways in which the tool is used especially what kind of workpiece is processed.
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).
Vibration
The vibration total value (tri-axial vector sum) determined according to EN62841-2-6:
Work mode: chiselling
Vibration emission (ah, Cheq): 5.7 m/s²
Uncertainty (K) : 1.5 m/s²
NOTE: The declared vibration total value(s) has been measured in accordance with a standard test method and may be used for comparing one tool with another.
NOTE: The declared vibration total value(s) 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 value(s) depending on the ways in which the tool is used especially what kind of workpiece is processed.
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 Power Scraper Safety Warnings
Safety instructions for all operations

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 the 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.

Additional safety warnings

1. 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.
2. Be sure the bit is secured in place before operation.
3. 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.
4. 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.
5. Always be sure you have a firm footing. Be sure no one is below when using the tool in high locations.
6. Hold the tool firmly with both hands.
7. Keep hands away from moving parts.
8. Do not leave the tool running. Operate the tool only when hand-held.
9. Do not point the tool at any one in the area when operating. The bit could fly out and injure someone seriously.
10. 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.
11. Some material contains chemicals which may be toxic. Take caution to prevent dust inhalation and skin contact. Follow material supplier safety data.
12. 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.
13. Before operation, make sure that there is no buried object such as electric pipe, water pipe or gas pipe in the working area. Otherwise, the bit may touch them, resulting an electric shock, electrical leakage or gas leak.
14. Do not operate the tool at no-load unnecessarily.

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 or tamper with the battery cartridge. It may result in a fire, excessive heat, or explosion.
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. Do not store and use the tool and battery cartridge in locations where the temperature may reach or exceed 50 °C (122 °F).
10. 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.
11. Do not nail, cut, crush, throw, drop the battery cartridge, or hit against a hard object to the battery cartridge. Such conduct may result in a fire, excessive heat, or explosion.
12. Do not use a damaged battery.
13. 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.
14. When disposing the battery cartridge, remove it from the tool and dispose of it in a safe place. Follow your local regulations relating to disposal of battery.
15. 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.
16. If the tool is not used for a long period of time, the battery must be removed from the tool.
17. During and after use, the battery cartridge may take on heat which can cause burns or low temperature burns. Pay attention to the handling of hot battery cartridges.
18. Do not touch the terminal of the tool immediately after use as it may get hot enough to cause burns.
19. Do not allow chips, dust, or soil stuck into the terminals, holes, and grooves of the battery cartridge. It may cause heating, catching fire, burst and malfunction of the tool or battery cartridge, resulting in burns or personal injury.
20. Unless the tool supports the use near high-voltage electrical power lines, do not use the battery cartridge near high-voltage electrical power lines. It may result in a malfunction or breakdown of the tool or battery cartridge.
21. Keep the battery away from children.

SAVE THESE INSTRUCTIONS.

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. When not using the battery cartridge, remove it from the tool or the charger.
5. Charge the battery cartridge if you do not use it for a long period (more than six months).

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 as shown in the figure, 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.

NOTE: Depending on the conditions of use and the ambient temperature, the indication may differ slightly from the actual capacity.
NOTE: The first (far left) indicator lamp will blink when the battery protection system works.
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.
Over discharge 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 car-trudge into the tool, always check to see that this witch trigger actuates properly and returns to the “OFF” position when released.
CAUTION: When not operating the tool, depress the trigger-lock button from side to lock the switch trigger in the OFF position.
To prevent the switch trigger from accidentally pulled, the trigger-lock button is provided. To start the tool, depress the trigger-lock button from A ( ) side and pull the switch trigger. Tool speed is increased by increasing pressure on the switch trigger. Release
the switch trigger to stop. After use, depress the trigger-lock button from B ( ) side.
► Fig.3: 1. Trigger-lock button 2. Switch trigger
Using the trigger-lock button for continuous operation
For continuous operation, depress the trigger-lock button from B (   ) side while pulling the switch trigger, and then release the switch trigger. To stop the tool, depress the trigger-lock button from A ( ) side.
► Fig.4: 1. Trigger-lock button 2. Switch trigger
Speed adjusting dial
► Fig.5: 1. Speed adjusting dial
The blows per minute can be changed by turning the speed adjusting dial to a given number setting from 1 to
5. Higher speed is obtained when the dial is turned in the direction of number 5. And lower speed is obtained when it is turned in the direction of number 1.
Refer to the table for the relationship between the number settings on the dial and the 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: 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.
Lighting up the front lamp
► Fig.6: 1. 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.
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.
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.

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.
Grease
Coat the shank end of the 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 bit
Clean the shank end of the bit and apply grease before installing the bit.
► Fig.7: 1. Shank end 2. Grease
Insert the bit into the tool. Turn the bit and push it in until it engages. After installing the bit, always make sure that the bit is securely held in place by trying to pull it out.
► Fig.8: 1. Bit
To remove the bit, pull the chuck cover down all the way and pull the bit out.
► Fig.9: 1. Bit 2. Chuck cover
Bit angle
The bit can be secured at 12 different angles. To change the bit angle, slide the change ring forward, then turn the change ring to change the bit angle. At the desired angle, slide the change ring back to the original position. The bit will be secured in place.
► Fig.10: 1. Change ring
Hook
CAUTION: Always remove the battery when hanging the tool with the hook.
CAUTION: Never hook the tool at high location or on potentially unstable surface.
Using the 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.
► Fig.11: 1. Hook
► Fig.12
Removing or installing the hook
To remove the hook, loosen the screws and remove the washers and hook. To install the hook, insert the washers to the slits on the tool housing, and then secure the hook with 2 screws.
► Fig.13: 1. Hook 2. Screw 3. Washer
Connecting lanyard (tether strap) to the hook
CAUTION: Do not use damaged hook and screws. Before use, always check for damages, cracks or deformations, and make sure that the screws are tightened.
**CAUTION: Install or remove the hook on a stable table or surface. Be sure to use the screws provided with the hook only. After installing the hook, make sure that the hook is securely installed with the screws.
CAUTION: Do not remove the battery cartridge while hanging the tool. The tool may fall if the screws are not tightened.
CAUTION:** Always use a locking carabiner (multi-action and screw gate type) and be sure to attach the lanyard (tether strap) to the double looped portion of the hook. Improper attachment may cause tool drop from the hook and result in personal injury.
The hook is also used for connecting the lanyard (tether strap). Be sure to connect the lanyard (tether strap) to the double looped portion of the hook.
► Fig.14:

1. Double looped portion of the hook
2. Lanyard (tether strap) 3. Locking carabiner (multi-action and screw gate type)

OPERATION

CAUTION: Always hold the tool firmly with both hands 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.
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.
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.15
Connecting lanyard (tether strap) to hook
**** Safety warnings specific for use at height Read all safety warnings and instructions. Failure to follow the warnings and instructions may result in serious injury.

1. Always keep the tool tethered when working “at height”. Maximum lanyard length is 2 m. The maximum permissible fall height for lanyard (tether strap) must not exceed 2 m.
2. Use only with lanyards appropriate for this tool type and rated for at least 4.0 kg.
3. Do not anchor the tool lanyard to anything on your body or on movable components. Anchor the tool lanyard to a rigid structure that can withstand the forces of a dropped tool.
4. Make sure the lanyard is properly secured at each end prior to use.
5. Inspect the tool and lanyard before each use for damage and proper function (including fabric and stitching). Do not use if damaged or not functioning properly.
6. Do not wrap lanyards around or allow them to come in contact with sharp or rough edges.
7. Fasten the other end of the lanyard outside the working area so that a falling tool is held securely.
8. Attach the lanyard so that the tool will move away from the operator if it falls. Dropped tools will swing on the lanyard, which could cause injury or loss of balance.
9. Do not use near moving parts or running machinery. Failure to do so may result in a crush or entanglement hazard.
10. Do not carry the tool by the attachment device or the lanyard.
11. Only transfer the tool between your hands while you are properly balanced.
12. Do not attach lanyards to the tool in a way that keeps switches or trigger-lock (if supplied) from operating properly.
13. Avoid getting tangled in the lanyard.
14. Keep lanyard away from the drilling or chiselling area of the tool.
15. Use a locking carabiner (multi-action and screw gate type). Do not use single action spring clip carabiners.
16. In the event the tool is dropped, it must be tagged and removed from service, and should be inspected by a Makita Factory or Authorized Service Center.

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.

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.

• Bull point
• Cold chisel
• Scaling chisel
• Grooving chisel
• Bit grease
• Hook
• 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.

Makita Europe N.V.
Jan-Baptist Vinkstraat 2,
3070 Kortenberg, Belgium
Makita Corporation
3-11-8, Sumiyoshi-cho,
Anjo, Aichi 446-8502 Japan
www.makita.com
885744A998
EN, FR, DE, IT, NL,
ES, PT, DA, EL, TR
20220105

References

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

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