HR2450X8 - Jackhammer MAKITA - Free user manual and instructions

USER MANUAL HR2450X8 MAKITA

The followings show the symbols used for the tool. Be sure that you understand their meaning before use.

Symboles

Explanation of general view

1	Grip base	12	Lock button	23	Rotation with hammering
2	Side grip (auxiliary handle)	13	Depth gauge	24	Hammering only
3	Teeth	14	Switch trigger	25	Rotation only
4	Protrusions	15	Lock button	26	Dust cup
5	Loosen	16	Lamp (HR2450F only)	27	Keyless drill chuck
6	Tighten	17	Reversing switch lever	28	Chuck adapter
7	Bit shank	18	Tool holder	29	Sleeve
8	Bit grease	19	Change cover line	30	Tighten
9	Bit	20	Change cover	31	Loosen
10	Chuck cover	21	Drill chuck assembly	32	Ring
11	Action mode changing knob	22	Spindle

SPECIFICATIONS

Model	HR2450/X/F	HR2450T/FT
Capacities
Concrete	24 mm	24 mm
Core bit	54 mm	54 mm
Diamond core bit	65 mm	65 mm
Wood	32 mm	32 mm
Steel	13 mm	13 mm
No load speed (min-1)	0-1,100	0-1,100
Blows per minute	0-4,500	0-4,500
Overall length	360mm	384mm
Net weight	2.4 kg	3.6 kg

• Due to our continuing program of research and development, the specifications herein are subject to change without notice.
• Note: Specifications may differ from country to country.

Intended use

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

Power supply

The tool should be connected only to a power supply of the same voltage as indicated on the nameplate, and can only be operated on single-phase AC supply. They are double-insulated in accordance with European Standard and can, therefore, also be used from sockets without earth wire.

Safety hints

For your own safety, please refer to the enclosed safety instructions.

ADDITIONAL SAFETY RULES

ENB010-1

1. Hold tools by insulated gripping surfaces when performing an operation where the cutting tool may contact hidden wiring or its own cord. Contact with a "live" wire will make exposed metal parts of the tool "live" and shock the operator.
2. Wear ear protectors when using the tool for extended periods. Prolonged exposure to high intensity noise can cause hearing loss.
3. Wear a hard hat (safety helmet), safety glasses and/or face shield. It is also highly recommended that you wear a dust mask, and thickly padded gloves.

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

5. 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.

6. 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.
7. Always be sure you have a firm footing. Be sure no one is below when using the tool in high locations.
8. Hold the tool firmly with both hands.
9. Keep hands away from moving parts.
10. Do not leave the tool running. Operate the tool only when hand-held.
11. Do not point the tool at any one in the area when operating. The bit could fly out and injure someone seriously.
12. Do not touch the bit or parts close to the bit immediately after operation; they may be extremely hot and could burn your skin.

SAVE THESE INSTRUCTIONS.

OPERATING INSTRUCTIONS

Side grip (auxiliary handle) (Fig. 1)

Always use the side grip to ensure operating safety. Install the side grip so that the teeth on the grip fit in between the protrusions on the tool barrel. Then tighten the grip by turning clockwise at the desired position. It may be swung 360^ so as to be secured at any position.

Installing or removing the bit

CAUTION:

Always be sure that the tool is switched off and unplugged before installing or removing the bit.

Clean the bit shank and apply bit grease before installing the bit. (Fig. 2)

Insert the bit into the tool. Turn the bit and push it in until it engages. (Fig. 3)

After installing, always make sure that the bit is securely held in place by trying to pull it out.

To remove the bit, pull the chuck cover down all the way and pull the bit out. (Fig. 4)

Bit angle (when chipping, scaling or demolishing)

CAUTION:

Always be sure that the tool is switched off and unplugged before changing the bit angle.

The bit can be secured at the desired angle. To change the bit angle, depress the lock button and rotate the action mode changing knob to the symbol. Turn the bit to the desired angle. (Fig. 5)

Depress the lock button and rotate the action mode changing knob to the symbol. Then make sure that the bit is securely held in place by turning it slightly. (Fig. 6)

Depth gauge (Fig. 7)

The depth gauge is convenient for drilling holes of uniform depth. Loosen the side grip and insert the depth gauge into the hole in the side grip. Adjust the depth gauge to the desired depth and tighten the side grip.

NOTE:

The depth gauge cannot be used at the position where the depth gauge strikes against the gear housing.

Switch action (Fig. 8)

CAUTION:

Before plugging in the tool, always check to see that the switch trigger actuates properly and returns to the "OFF" position when released.

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. For continuous operation, pull the switch trigger and then push in the lock button. To stop the tool from the locked position, pull the switch trigger fully, then release it.

Lighting up the lamps (Fig. 8)

For model HR2450F, HR2450FT

CAUTION:

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

To turn on the lamp, pull the trigger. Release the trigger to turn it off.

NOTE:

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

Reversing switch action (Fig. 9)

This tool has a reversing switch to change the direction of rotation. Move the reversing switch lever to the position (A side) for clockwise rotation or the position (B side) for counterclockwise rotation.

CAUTION:

• Always check the direction of rotation before operation.
• 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.
• When you operate the tool in counterclockwise rotation, the switch trigger is pulled only halfway and the tool runs at half speed. For counterclockwise rotation, you cannot push in the lock button.

Changing the tool holder

For model HR2450T/HR2450FT

The tool holder can be easily exchanged for the drill chuck assembly.

Removing the tool holder (Fig. 10)

Before removing the tool holder, always remove the bit. Grasp the change cover of the tool holder 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.

Attaching the drill chuck assembly (Fig. 11)

Check the line of the drill chuck assembly shows the symbol. Grasp the change cover of the drill chuck assembly and set the line to the symbol.

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

Selecting action mode

Rotation with hammering (Fig. 12)

For drilling in concrete, masonry, etc., depress the lock button and rotate the action mode changing knob to the symbol. Use a tungsten-carbide tipped bit.

Hammering only (Fig. 13)

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

Rotation only (Fig. 14)

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

CAUTION:

• Do not rotate the action mode changing knob when the tool is running under load. The tool will be damaged.
• 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.

Torque limiter

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

CAUTION:

• As soon as the torque limiter actuates, switch off the tool immediately. This will help prevent premature wear of the tool.
• Hole saws cannot be used with this tool. They tend to pinch or catch easily in the hole. This will cause the torque limiter to actuate too frequently.

Hammer drilling operation (Fig. 15)

Set the action mode changing knob to the symbol.

Position the bit at the desired location for the hole, then pull the 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 bit partially from the hole. By repeating this several times, the hole will be cleaned out and normal drilling may be resumed.

CAUTION:

There is tremendous and sudden twisting force exerted on the tool/bit at the time of hole breakthrough, 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.

Bit grease

Coat the bit shank head beforehand with a small amount of bit grease (about 0.5 - 1g ).

This chuck lubrication assures smooth action and longer service life.

Blow-out bulb (Fig. 16)

Use the blow-out bulb to clean out the hold.

Dust cup (Fig. 17)

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 Fig. 17. The size of bits which the dust cup can be attached to is as follows.

	Bit diameter (mm)
Dust cup 5	6 – 14.5
Dust cup 9	12 – 16

Chipping/Scaling/Demolition (Fig. 18)

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.

Drilling in wood or metal

For model HR2450/HR2450F/HR2450X (Fig. 19)

Use the optional drill chuck assembly. When installing it, refer to "Installing or removing drill bit" described on the previous page.

For model HR2450T/HR2450FT (Fig. 11)

Use the drill chuck assembly as standard equipment. When installing it, refer to "Changing the tool holder" described on the previous page.

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.

To remove the bit, hold the ring and turn the sleeve counterclockwise. (Fig. 20)

Set the action mode changing knob to the symbol. You can drill up to 13mm diameter in metal and up to 32mm diameter in wood.

CAUTION:

• Never use "rotation with hammering" when the drill chuck assembly is installed on the tool. The drill chuck assembly may be damaged.
  Also, the drill chuck will come off when reversing the tool.
• 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 bit, decrease the tool performance and shorten the service life of the tool.
• There is a tremendous twisting force exerted on the tool/bit at the time of hole breakthrough. Hold the tool firmly and exert care when the bit begins to break through the workpiece.
• A stuck 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.
• Always secure small workpieces in a vise or similar hold-down device.

Diamond core drilling

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

CAUTION:

If performing diamond core drilling operations using "rotation with hammering" action, the diamond core bit may be damaged.

MAINTENANCE

CAUTION:

Always be sure that the tool is switched off and unplugged before carrying out any work on the tool.

To maintain product safety and reliability, repairs, maintenance or adjustment should be carried out by a Makita Authorized Service Center.

Descriptif

Voor model HR2450T/HR2450FT

Acender as Iampadas (Fig. 8)

Para o Modelo HR2450F/HR2450FT

PRECAUÇA:

For model HR2450F/HR2450FT

FORSIGTIG:

Se/DDke direkte pLyskilden.

For model HR2450T/HR2450FT

For model HR2450T/HR2450FT (Fig. 11)

Malli HR2450T/HR2450FT

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. The accessories or attachments should be used only in the proper and intended manner.

F ACCESSOIRES

ATTENTION:

EC-DECLARATION OF CONFORMITY

We declare under our sole responsibility that this product is in compliance with the following standards or standardized documents,

HD400, EN50144, EN55014, EN61000

in accordance with Council Directives, 73/23/EEC, 89/336/EEC and 98/37/EC.

FRANÇAISE

DECLARATION DE CONFORMITE CE

HD400, EN50144, EN55014, EN61000.

ITALIANO

de accordo com as directivas 73/23/CEE, 89/336/CEE e 98/37/CE do Conselho.

DANSK

EU-DEKLARATION OM KONFORMITET

Michigan Drive, Tongwell, Milton Keynes,

Bucks MK15 8JD, ENGLAND

ENGLISH

Noise and Vibration

The typical A-weighted noise levels are

sound pressure level: 89 dB (A)

sound power level: 102 dB (A)

• Wear ear protection. -

The typical weighted root mean square acceleration value is 9.0m / s^2

FRANÇAISE

Bruit et vibrations