001CoverF_DH24DV_ChT

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1 Cordless Rotary Hammer DH 24DVA Handling Instructions Read through carefully and understand these instructions before use.

2 A B C 5 6 D 0 A C 7 E 8 I J F G H 1

3 9 [ T] 10 K K Q K O P R S (a)l (b)m (c)n X U V A B C Y W 13 Z 14 [ B V B C = \ C [ \ a c ` b 2

4 A B C D E F G H I J K L M N O P Q R S T U V W X Y Z [ \ ] ^ a b c English Rechargeable battery Latch Guide rail of battery Push Housing Pull out Insert Guide rail of housing Pilot lamp Drill bit Part of SDS-plus shank Front cap Grip Dust cup Dust collector (B) Change lever mark mark mark mark Push button Forward rotation Reverse rotation Does not rotate Push the side Push the side Center position indication indication Diagram seen from the handle side Drill chuck Chuck adapter Depth gauge Mounting hole Side handle Bit Socket Taper shank adapter Cotter Rest Shift knob POWER mode SAVE mode 3

5 GENERAL SAFETY RULES WARNING! Read all instructions Failure to follow all instructions listed below may result in electric shock, fire and/or serious injury. The term power tool in all of the warnings listed below refers to your mains operated (corded) power tool or battery operated (cordless) power tool. SAVE THESE INSTRUCTIONS 1) Work area a) Keep work area clean and well lit. Cluttered and dark areas invite accidents. b) Do not operate power tools in explosive atmospheres, such as in the presence of flammable liquids, gases or dust. Power tools create sparks which may ignite the dust of fumes. c) Keep children and bystanders away while operating a power tool. Distractions can cause you to lose control. 2) Electrical safety a) Power tool plugs must match the outlet. Never modify the plug in any way. Do not use any adapter plugs with earthed (grounded) power tools. Unmodified plugs and matching outlets will reduce risk of electric shock. b) Avoid body contact with earthed or grounded surfaces such as pipes, radiators, ranges and refrigerators. There is an increased risk of electric shock if your body is earthed or grounded. c) Do not expose power tools to rain or wet conditions. Water entering a power tool will increase the risk of electric shock. d) Do not abuse the cord. Never use the cord for carrying, pulling or unplugging the power tool. Keep cord away from heat, oil, sharp edges or moving parts. Damaged or entangled cords increase the risk of electric shock. e) When operating a power tool outdoors, use an extension cord suitable for outdoor use. Use of a cord suitable for outdoor use reduces the risk of electric shock. 3) Personal safety a) Stay alert, watch what you are doing and use common sense when operating a power tool. Do not use a power tool while you are tired or under the influence of drugs, alcohol or medication. A moment of inattention while operating power tools may result in serious personal injury. b) Use safety equipment. Always wear eye protection. Safety equipment such as dust mask, non-skid safety shoes, hard hat, or hearing protection used for appropriate conditions will reduce personal injuries. c) Avoid accidental starting. Ensure the switch is in the off position before plugging in. Carrying power tools with your finger on the switch or plugging in power tools that have the switch on invites accidents. d) Remove any adjusting key or wrench before turning the power tool on. A wrench or a key left attached to a rotating part of the power tool may result in personal injury. e) Do not overreach. Keep proper footing and balance at all times. This enables better control of the power tool in unexpected situations. f) Dress properly. Do not wear loose clothing or jewellery. Keep your hair, clothing and gloves away from moving parts. Loose clothes, jewellery or long hair can be caught in moving parts. g) If devices are provided for the connection of dust extraction and collection facilities, ensure these are connected and properly used. Use of these devices can reduce dust related hazards. 4) Power tool use and care a) Do not force the power tool. Use the correct power tool for your application. The correct power tool will do the job better and safer at the rate for which it was designed. b) Do not use the power tool if the switch does not turn it on and off. Any power tool that cannot be controlled with the switch is dangerous and must be repaired. c) Disconnect the plug from the power source before making any adjustments, changing accessories, or storing power tools. Such preventive safety measures reduce the risk of starting the power tool accidentally. d) Store idle power tools out of the reach of children and do not allow persons unfamiliar with the power tool or these instructions to operate the power tool. Power tools are dangerous in the hands of untrained users. e) Maintain power tools. Check for misalignment or binding of moving parts, breakage of parts and any other condition that may affect the power tools operation. If damaged, have the power tool repaired before use. Many accidents are caused by poorly maintained power tools. f) Keep cutting tools sharp and clean. Properly maintained cutting tools with sharp cutting edges are less likely to bind and are easier to control. g) Use the power tool, accessories and tool bits etc., in accordance with these instructions and in the manner intended for the particular type of power tool, taking into account the working conditions and the work to be performed. Use of the power tool for operations different from intended could result in a hazardous situation. 5) Service a) 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. PRECAUTION Keep children and infirm persons away. When not in use, tools should be stored out of reach of children and infirm persons. 4

6 PRECAUTIONS FOR CORDLESS ROTARY HAMMER 1. Always charge the battery at a temperature of 0 40 C. A temperature of less than 0 C will result in over charging which is dangerous. The battery cannot be charged at a temperature higher than 40 C. The most suitable temperature for charging is that of C. 2. Do not use the charger continuously. When one charging is completed, leave the charger for about 15 minutes before the next charging of battery. 3. Do not allow foreign matter to enter the hole for connecting the rechargeable battery. 4. Never disassemble the rechargeable battery and charger. 5. Never short-circuit the rechargeable battery. Shortchircuiting the battery will cause a great electric current and overheat. It results in burn or damage to the battery. 6. Do not dispose of the battery in fire. If the battery is burnt, it may explode. 7. When using this unit continuously, the unit may overheat, leading to damage in the motor and switch. Please leave it without using it for approximately 15 minutes. 8. Do not insert object into the air ventilation slots of the charger. Inserting metal objects or inflammables into the charger air ventilation slots will result in electrical shock hazard or damaged charger. 9. Using an exhausted battery will damage the charger. 10. When drilling in wall, floor or ceiling, check for buried electric power cord, etc. 11. Bring the battery to the shop from which it was purchased as soon as the post-charging battery life becomes too short for practical use. Do not dispose of the exhausted battery. 12. Wear ear protections Exposure to noise can cause hearing loss. 13. Do not touch the bit during or immediately after operation. The bit becomes very hot during operation and could cause serious burns. 14. Use auxiliary handles supplied with the tool. Loss of control can cause personal injury. 15. Always hold the body handle and side handle of the power tool firmly. Otherwise the counterforce produced may result in inaccurate and even dangerous operation. 16. Wear a dust mask Do not inhale the harmful dusts generated in drilling or chiseling operation. The dust can endanger the health of yourself and bystanders. SPECIFICATIONS POWER TOOL Model DH24DVA No-load speed Save/Power min / min Full-load impact rate Save/Power min / min Concrete 24 mm Capacity Drilling Steel 13 mm Wood 30 mm Driving Wood screw 6.2 mm (diameter) 40 mm (length) Rechargeable battery EB2420: Ni-Cd 24 V (2.0 Ah 20 cells) EB2430HA: Ni-MH 24 V (3.0 Ah 20 cells) EB2433X: Ni-MH 24 V (3.3 Ah 20 cells) Weight 4.1 kg Do not use the SAVE mode when boring holes with the wood drill. There is a likelihood that the motor will burn out. CHARGER Model UC24YFB Charging voltage 24 V Weight 0.6 kg 5

7 STANDARD ACCESSORIES DH24DVA (BFK) (HFK) (XFK) 1 Side handle Depth gauge Charger Plastic case DH24DVA (2BFK) (2HFK) (2XFK) 1 Side handle Depth gauge Charger Plastic case Extra battery... 1 Standard accessories are subject to change without notice. OPTIONAL ACCESSORIES (sold separately) 1. Battery (EB2420, EB2430HA, EB2433X) It may be convenient to prepare some extra batteries. 2. Drilling anchor holes (rotation + hammering) Drill bit (taper shank) and taper shank adapter Drill bit (taper shank) Taper shank adapter (SDS plus shank) Cotter Outer diameter 11.0 mm 12.3 mm 12.7 mm 14.3 mm 14.5 mm 17.5 mm 21.5 mm Taper mode Applicable drill bit Morse taper (No. 1) Drill bit (taper shank) mm Morse taper (No. 2) Drill bit (taper shank) 21.5 mm A-taper Taper shank adapter formed A-taper or B-taper is provided as an optional accessory, but drill bit B-taper for it is not provided. 6

8 13 mm Hammer Drill chuck and Chuck wrench Impact Drill Application ( Straight Shank Bit ) 13 mm Hammer Drill Chuck (SDS plus shank) Chuck wrench 3. Anchor setting (rotation + hammering) Anchor setting adapter (for rotary hammer) Anchor size W1/4" W5/16" W3/8" Anchor setting adapter (for rotary hammer) (SDS plus shank) Anchor setting adapter (for manual hammer) Anchor size W1/4" W5/16" W3/8" W1/2" W5/8" Anchor setting adapter (for manual hammer) 4. Bolt placing operation with Chemical Anchor. (rotation + hammering) Standard socket ( on the market ) (SDS-plus shank) 12.7 mm Chemical Anchor Adapter 19 mm Chemical Anchor Adapter 5. Demolishing operation (Hammering only) Bull point (Round type) (SDS-plus shank) Bull point (Square type) (SDS-plus shank) 7

9 6. Groove digging and edging (Hammering only) Cold chisel (SDS-plus shank) Cutter (SDS-plus shank) 7. Grooving (Hammering only) Grooving chisel (SDS-plus shank) 8. Drilling holes and driving screws (rotation only) Drill chuck, chuck adapter (G) and chuck wrench Special screw Drill chuck (13VLR) Chuck adapter (G) (SDS plus shank) Chuck wrench 9. Drilling holes (rotation only) Drill chuck (13VLA) Chuck adapter (D) (SDS plus shank) Chuck wrench 13 mm drill chuck ass y (include chuck wrench ass y) and chuck (for drilling in steel or wood). 8

10 10. Driving Screws (rotation only) Bit No. Chuck adapter (D) (SDS plus shank) Bit No. Screw Size Length No mm 25 mm No mm 25 mm 11. Dust cup, Dust collector (B) Dust cup Dust collector (B) Optional accessories are subject to change without notice. APPLICATIONS Rotation and hammering function Drilling anchor holes Drilling holes in concrete Drilling holes in tile Rotation only function Drilling in steel or wood (with optional accessories) Tightening machine screws, wood screws (with optional accessories) Hammering only function Light-duty chiselling of concrete, groove digging and edging. BATTERY REMOVAL/INSTALLATION 1. Battery removal Hold the handle tightly and push the battery latches to remove the battery (see Figs. 1 and 2). CAUTION: Never short-circuit the battery. 2. Battery installation Insert the battery aligning both guide rail of battery and body. Make sure the battery is fixed firmly. CHARGING Before using the power tool, charge the battery as follows. 1. Connect the charger s power cord to a receptacle. When the power cord is connected, the charger s pilot lamp will blink in red. (At 1-second intervals). 2. Insert the battery into the charger. Insert the battery into the charger as shown in Fig. 3. Make sure the battery is fully seated in the charger. 3. Charging When inserting a battery in the charger, charging will commence and the pilot lamp will light continuously in red. When the battery becomes fully recharged, the pilot lamp will blink in red. (At 1-second intervals.) (See Table 1) (1) Pilot lamp indication The indications of the pilot lamp will be as shown in Table 1, according to the condition of the charger or the rechargeable battery. 9

11 Table 1 Before charging Blinks (RED) Indications of the pilot lamp Lights for 0.5 seconds. Does not light for 0.5 seconds. (off for 0.5 seconds) While charging Charging complete Lights (RED) Blinks (RED) Lights continuously Lights for 0.5 seconds. Does not light for 0.5 seconds. (off for 0.5 seconds) Charging impossible Lights for 0.1 seconds. Does not light for 0.1 seconds. (off for 0.1 seconds) Malfunction in the battery or the charger Charging impossible Lights (GREEN) Lights continuously The battery temperature is high, making recharging impossible. (2) Regarding the temperatures of the rechargeable battery. The temperatures for rechargeable batteries are as shown in the table 2, and batteries that have become hot should be cooled for a while before being recharged. Table 2 Temperatures at Battery type which the battery can be recharged EB C 60 C EB2430HA, EB2433X 0 C 45 C (3) Regarding recharging time Depending on the type of the battery, the charging time will become as shown in Table 3. Table 3 Charging time (At 20 C) Battery type Recharging time EB2420 Approx. 50 min. EB2430HA Approx. 70 min. EB2433X Approx. 75 min. NOTE: The charging time may vary according to ambient temperature and power source voltage. 4. Disconnect the charger s power cord from the receptacle. 5. Hold the charger firmly and pull out the battery. NOTE: After operation, pull out batteries from the charger first, and then keep the batteries properly. Regarding electric discharge in case of new batteries, etc. As the internal chemical substance of new batteries and batteries that have not been used for an extended period is not activated, the electric discharge might be low when using them the first and second time. This is a temporary phenomenon, and normal time required for recharging will be restored by recharging the batteries 2 3 times. How to make the batteries perform longer (1) Recharge the batteries before they become completely exhausted. When you feel that the power of the tool becomes weaker, stop using the tool and recharge its battery. If you continue to use the tool and exhaust the electric current, the battery may be damaged and its life will become shorter. (2) Avoid recharging at high temperatures. A rechargeable battery will be hot immediately after use. If such a battery is recharged immediately after use, its internal chemical substance will deteriorate, and the battery life will be shortened. Leave the battery and recharge it after it has cooled for a while. CAUTION: If the battery has been heated right after operation (or due to sunlight, etc.), the charger s pilot lamp may not light in red. In such a case, first let the battery cool, then start charging. When the pilot lamp flikers in red (at 0.2 second intervals), check for and take out any foreign objects in the charger s battery installation hole. If there are no foreign objects, it is probable that the battery or charger is malfunctioning. Take it to your authorized Service Center. Since the built-in micro computer takes about 3 seconds to confirm that the battery being charged with UC24YFB is taken out, wait for a minimum of 3 seconds before reinserting it to continue charging. If the battery is reinserted within 3 seconds, the battery may not be properly charged. PRIOR TO OPERATION 1. Mounting the drill bit (Fig. 4, 5) CAUTION: To prevent accidents, make sure to turn the switch off. NOTE: When using tools such as drill bits, etc., make sure to use the genuine parts designated by our company. 10

12 (1) Clean the shank portion of the drill bit. (2) Insert the drill bit in a twisting manner into the tool holder until it latches itself. (Fig. 4) (3) Check the latching by pulling on the drill bit. (4) To remove the drill bit, fully pull the grip in the direction of the arrow and pull out the drill bit. 2. Confirm that the battery is mounted correctly. 3. Installation of dust cup or dust collector (B) (Optional accessories) (Fig. 6, Fig. 7) When using a rotary hammer for upward drilling operations attach a dust cup or a dust collector (B) to collect dust or particles for easy operation. Installing the dust cup Use the dust cup by attaching to the drill bit as shown in Fig. 6. When using a bit which has big diameter, enlarge the center hole of the dust cup with this rotary hammer. Installing dust collector (B) When using dust collector (B), insert dust collector (B) from the tip of the bit by aligning it to the groove on the grip. (Fig. 7) CAUTION: The dust cup and dust collector (B) are for exclusive use of concrete drilling work. Do not use them for wood or metal drilling work. Insert dust collector (B) completely into the chuck part of the main unit. When turning the rotary hammer on while dust collector (B) is detached from a concrete surface, dust collector (B) will rotate together with the drill bit. Make sure to turn on the switch after pressing dust cup on the concrete surface. When using dust collector (B) attached to a drill bit that has more than 190 mm of overall length, dust collector (B) cannot touch the concrete surface and will rotate. Therefore, please use dust collector (B) by attaching to drill bits which have 166 mm, 160 mm, and 110 mm overall length. Dump particles after every two or three holes when drilling. Please replace the drill bit after removing dust collector (B). 4. Selecting the driver bit Screw heads or bits will be damaged unless a bit appropriate for the screw diameter is employed to drive in the screws. 5. Confirm the direction of bit rotation (Fig. 9) The bit rotates clockwise (viewed from the rear side) by pushing the R-side of the push button. (Fig. 9-a) The L-side of the push button is pushed to turn the bit counterclockwise. (Fig. 9-b) The motor does not rotate if the push button is set to the center position. (Fig. 9-c) 6. Continuous drilling The number of holes that can be drilled in concrete after one recharge is shown in Table 4. Table 4 Bit dia. Depth Possible continuous drilling number (holes) (mm) (mm) EB2420 EB2430HA EB2433X These data are for the referential values. The number of holes that can be drilled varies according to the sharpness of the used bit or the conditions of the concrete being drilled. CAUTION: When using this unit continuously, the unit may overheat, leading to damage in the motor and switch. Please leave it without using it for approximately 15 minutes. HOW TO USE 1. Switch operation When the switch trigger is depressed, the tool rotates. When the switch trigger is released, the tool stops. The rotational speed of the rotary hammer can be controlled by varying the amount that the switch trigger is pulled. Speed is low when the switch trigger is pulled slightly and increases as the switch trigger is pulled more. When releasing the switch trigger, the brake will be applied for immediate stopping. 2. Rotation + Hammering Align the mark with the mark by rotating the change lever to set the Rotation + Hammering function. (Fig. 8) (1) Mount the drill bit. (2) Pull the trigger switch after applying the drill bit tip to the drilling position. (Fig. 10) (3) Pushing the rotary hammer forcibly is not necessary at all. Pushing slightly so that drill dust comes out gradually is just sufficient. CAUTION: When the drill bit touches construction iron bar, the bit will stop immediately and the rotary hammer will react to revolve. Therefore please grip the side handle and handle tightly as shown in Fig Rotation only Align the mark with the mark by rotating the change lever to set the Rotation only function. (Fig. 8) To drill a wood or metal material using the optional drill chuck and chuck adapter, proceed as follows. Installing drill chuck and chuck adapter: (Fig. 11) (1) Attach the drill chuck to the chuck adaptor. (2) The part of the SDS-plus shank is the same as the drill bit. Therefore, refer to the item of Mounting the drill bit for attaching it. 11

13 CAUTION: Application of force more than necessary will not only expedite work at all, but will deteriorate the tip edge of the drill bit and reduce the service life of the rotary hammer in addition. Drill bit may snap off while withdrawing the rotary hammer from the drilled hole. For withdrawing, it is important to use a pushing motion. Do not attempt to use the rotary hammer in the rotation and striking mode with the drill chuck and chuck adapter attached. This would seriously shorten the service life of every component of the machine. 4. When driving wood screws (Fig. 13) (1) Selecting a suitable driver bit Employ plus-head screws, if possible, since the driver bit easily slips off the heads of slotted-head screws. (2) Tightening wood screws Prior to tightening wood screws, make pilot holes suitable for them in the wooden board. Apply the bit to the screw head grooves and gently drive the screws in the holes. CAUTION: Exercise care in preparing a pilot hole suitable for the wood screw taking the hardness of the wood into consideration. Should the hole be excessively small or shallow, requiring much power to drive the screw into it, the thread of the wood screw may sometimes be damaged. 5. Hammering only Align the mark with the mark by rotating the change lever to set the Hammering only function. (Fig. 8) (1) Mount the bull point or cold chisel. 6. Using depth gauge (Fig. 12) (1) Loosen the knob on the side handle, and insert the depth gauge into the mounting hole on the side handle. (2) Adjust the depth gauge position according to the depth of the hole and tighten the knob bolt securely. 7. How to use the drill bit (taper shank) and the taper shank adapter (1) Mount the taper shank adapter to the rotary hammer. (Fig. 14) (2) Mount the drill bit (taper shank) to the taper shank adapter. (Fig. 14) (3) Turn the switch ON, and drill a hole to prescribed depth. (4) To remove the drill bit (taper shank), insert the cotter into the slot of the taper shank adapter and strike the head of the cotter with a hammer supporting on the rest. (Fig. 15) 8. Switching between the SAVE and the POWER modes The hammering force of the hammer can be increased or decreased to conform with intended usage, by operating the shift knob as per Fig. 16. Adjust the force to match the usage intended. (1) SAVE mode... decreased hammering force This can prevent thin drill bits which are less than 5 mm in diameter, from being bent or broken. (2) POWER mode... increased hammering force This can be used to speedily and efficiently drill holes when the drill bits which are being used are greater than 5 mm in diameter. This can be used to drill holes into wood or metal. CAUTION: Do not drill holes in wood with the SAVE mode. There is a likelihood that the motor will burn out because it can easily lock up due to the low power. LUBRICATION Low viscosity grease is applied to this rotary hammer so that it can be used for a long period without replacing the grease. Please contact the nearest service center for grease replacement when any grease is leaking form loosened screw. Further use of the rotary hammer despite the grease shortage causes damage to reduce the service life. CAUTION: A specific grease (FG-6A) is used with this machine, therefore, the normal performance of the machine may be badly affected by use of different grease. Please be sure to let one of our service centers to undertake replacement of the grease. MAINTENANCE AND INSPECTION 1. Inspecting the tool Since use of a dull tool will degrade efficiency and cause possible motor malfunction, sharpen or replace the tool as soon as abrasion is noted. 2. Inspecting the mounting screws Regularly inspect all mounting screws and ensure that they are properly tightened. Should any of the screws be loose, retighten them immediately. Failure to do so could result in serious hazard. 3. Maintenance of the motor The motor unit winding is the very heart of the power tool. Exercise due care to ensure the winding does not become damaged and/or wet with oil or water. 4. Cleaning on the outside When the power tool is stained, wipe with a soft dry cloth or a cloth moistened with soapy water. Do not use chloric solvents, gasoline or paint thinner, as they melt plastics. 5. Storage Store the power tool in a place in which the temperature is less than 40 C and out of reach of children. 6. Service parts list A: Item No. B: Code No. C: No. Used D: Remarks CAUTION Repair, modification and inspection of Hitachi Power Tools must be carried out by a Hitachi Authorized Service Center. This Parts List will be helpful if presented with the tool to the Hitachi Authorized Service Center when requesting repair or other maintenance. In the operation and maintenance of power tools, the safety regulations and standards prescribed in each country must be observed. 12

14 MODIFICATION Hitachi Power Tools are constantly being improved and modified to incorporate the latest technological advancements. Accordingly, some parts (i.e. code numbers and/or design) may be changed without prior notice. NOTE: Due to HITACHI s continuing program of research and development, the specifications herein are subject to change without prior notice. 13

15 14

16 15

17 DH24DVA (BFK) (HFK) (XFK) DH24DVA (2BFK) (2HFK) (2XFK)

18 17

19 18

20 19

21 EB C 60 C EB2430HA, EB2433X 0 C 45 C EB2420 EB2430HA EB2433X 20

22 21

23 EB2420 EB2430HA EB2433X

24 23

25 A B C D D DD DDPS2L D S D D AP I.D I.D A B C D VVM 1 626VVC2PS2L D P DDM 1 608DDC2PS2L DC24V DDM 1 608DDC2PS2L D M M M EB EB2430HA UC24YFB

26 Hitachi Koki Co., Ltd. 512 Code No. C Printed in China