Hitachi DV 20V User manual

使用说明书
Handling instructions
冲击电钻
Impact Drill
DV 20VD
保留备用
Keep for future reference
中 文
English
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电动工具通用安全警告
警告！
阅读所有警告和所有说明。
不遵照以下警告和说明会导致电击、着火和／或严重伤害。
保存所有警告和说明书以备查阅。
在所有下列的警告中术语“电动工具”指市电驱动（有线）电动工具或电池驱动（无
线）电动工具。
1) 工作场地的安全
a) 保持工作场地清洁和明亮。
混乱和黑暗的场地会引发事故。
b) 不要在易爆环境，如有易燃液体、气体或粉尘的环境下操作电动工具。
电动工具产生的火花会点燃粉尘或气体。
c) 让儿童和旁观者离开后操作电动工具。
注意力不集中会使操作者失去对工具的控制。
2) 电气安全
a) 电动工具插头必须与插座相配。绝不能以任何方式改装插头。需接地的
电动工具不能使用任何转换插头。
未经改装的插头和相配的插座将减少电击危险。
b) 避免人体接触接地表面，如管道、散热片和冰箱。
如果你身体接地会增加电击危险。
c) 不得将电动工具暴露在雨中或潮湿环境中。
水进入电动工具将增加电击危险。
d) 不得滥用电线。绝不能用电线搬运、拉动电动工具或拔出其插头。使电
线远离热源、油、锐边或运动部件。
受损或缠绕的软线会增加电击危险。
e) 当在户外使用电动工具时，使用适合户外使用的外接软线。
适合户外使用的软线将减少电击危险。
目次
电动工具通用安全警告 .............................2
冲击电钻安全警告.........................................4
符号.......................................................................4
规格.......................................................................5
标准附件.............................................................5
用途.......................................................................5
作业之前.............................................................6
使用方法.............................................................8
维护和检查........................................................9
选择附件..........................................................11
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f) 如果在潮湿环境下操作电动工具是不可避免的，应使用剩余电流动作保
护器（ＲＣＤ）。
使用ＲＣＤ可减小电击危险。
3) 人身安全
a) 保持警觉，当操作电动工具时关注所从事的操作并保持清醒。当你感到
疲倦，或在有药物、酒精或治疗反应时，不要操作电动工具。
在操作电动工具时瞬间的疏忽会导致严重人身伤害。
b) 使用个人防护装置。始终佩戴护目镜。
安全装置，诸如适当条件下使用防尘面具、防滑安全鞋、安全帽、听力
防护等装置能减少人身伤害。
c) 防止意外起动。确保开关在连接电源和／或电池盒、拿起或搬运工具时
处于关断位置。
手指放在已接通电源的开关上或开关处于接通时插入插头可能会导致危险。
d) 在电动工具接通之前，拿掉所有调节钥匙或扳手。
遗留在电动工具旋转零件上的扳手或钥匙会导致人身伤害。
e) 手不要伸展得太长。时刻注意立足点和身体平衡。
这样在意外情况下能很好地控制电动工具。
f) 着装适当。不要穿宽松衣服或佩戴饰品。让衣服、手套和头发远离运动
部件。
宽松衣服、佩饰或长发可能会卷入运动部件中。
g) 如果提供了与排屑、集尘设备连接用的装置，要确保它们连接完好且使
用得当。
使用这些装置可减少尘屑引起的危险。
4) 电动工具使用和注意事项
a) 不要滥用电动工具，根据用途使用适当的电动工具。
选用适当设计的电动工具会使你工作更有效、更安全。
b) 如果开关不能接通或关断工具电源，则不能使用该电动工具。
不能用开关来控制的电动工具是危险的且必须进行修理。
c) 在进行任何调节、更换附件或贮存电动工具之前，必须从电源上拔掉插
头和／或使电池盒与工具脱开。
这种防护性措施将减少工具意外起动的危险。
d) 将闲置不用的电动工具贮存在儿童所及范围之外，并且不要让不熟悉电
动工具或对这些说明不了解的人操作电动工具。
电动工具在未经培训的用户手中是危险的。
e) 保养电动工具。检查运动件是否调整到位或卡住，检查零件破损情况和
影响电动工具运行的其他状况。如有损坏，电动工具应在使用前修理好。
许多事故由维护不良的电动工具引发。
f) 保持切削刀具锋利和清洁。
保养良好的有锋利切削刃的刀具不易卡住而且容易控制。
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g) 按照使用说明书，考虑作业条件和进行的作业来使用电动工具、附件和
工具的刀头等。
将电动工具用于那些与其用途不符的操作可能会导致危险。
5) 维修
a) 将你的电动工具送交专业维修人员，使用同样的备件进行修理。
这样将确保所维修的电动工具的安全性。
注意！
不可让儿童和体弱人士靠近工作场所。
应将不使用的工具存放在儿童和体弱人士接触不到的地方。
冲击电钻安全警告
1. 在进行冲击电钻时要戴好耳罩。
暴露在噪声屮会引起听力损伤。
2. 请使用辅助握把 ( 如果工具有提供 )，以免失控而造成人员受伤。
3. 当在钻削附件可能触及暗线或其自身软线之处进行操作时，要通过绝缘握持
面来握持工具。
钻削附件碰到带电导线会使工具外露的金属零件带电从而使操作者受到电
击。
符号
警告！
如下所示的符号用于本机。使用前请务必理解其含意。
阅读所有安全警告和所有指示 ---/min 每分钟转动次数
V额定电压 单纯旋转
A电流 旋转与冲击
n0无负荷速度 二类工具
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规格
电压* (110V、120V、220V、230V、240V)
电源输入* 860 W
改变速度 1 2
无负荷速度 0 － 1100 /min 0 － 3000 /min
能力
钢铁 13 mm 8 mm
混凝土 20 mm 13 mm
木材 40 mm 25 mm
满载冲击率 8100 /min 22000 /min
重量（不含线缆） 3.0 kg
* 因地区而异，故请务必确认产品上的标牌。
标准附件
除了主机（1 台）外，产品包中还包括表中所列的附件。
1 塑料运输箱 (代码号：338762)1
2 边柄 (代码号：338768)1
3 深度计 (代码号：303709)1
4 卡盘扳手 (代码号：987576)1
用途
○ 利用 ROTATION（旋钻）和 IMPACT（冲击）的组合动作 :
在坚硬材料（混凝土、大理石、花岗岩、瓷砖等）上钻孔。
○ 利用 ROTATION（旋钻）动作 :
在金属、木材和塑料上钻孔。
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作业之前
1. 电源
确认所使用的电源与工具铭牌上标示的规格是否相符。
2. 电源开关
确认电源开关是否切断。若电源开关接通，则插头插入电源插座时电动工具
将出其不意地立刻转动，从而招致严重事故。
3. 延伸线缆
若作业场所移到离开电源的地点，应使用容量足够、铠装合适的延伸线缆。
延伸线缆要尽可能地短些。
4. 检查插座
如果插头插入插座后非常松动，就必须对插座进行修理。
联系持证电工，进行妥善修理。
如果使用这样的问题插座，可能会引起过热现象，进而造成严重危害。
5. 确认环境条件
确认工作场所条件合适，且符合规定的预防措施。
6. 选择合适的钻头
○ 混凝土或石材
请使用“选购附件”一节中规定的钻头。
○ 金属或塑料
使用通常的金属用钻头。
○ 木材钻孔
使用通常的木工用钻头。
但钻开直经 6.5 mm 或更小的孔口时，
宜使用金属用钻头。
7. 钻头的装配和拆卸 ( 图 1)
(1) 打开夹盘钳夹，并将钻头插入夹盘。
(2) 将卡盘扳手分别放在夹盘的三个孔之上，
并将其沿顺时针方向旋转（前视），使之
固定。
(3) 要拆卸钻头时，将卡盘扳手放入夹盘上
的一个孔中，并将其沿逆时针方向转动。
8. 装配边柄（图 2）
先将边柄插在连接部。
然后，按顺时钟方向旋转边柄扣，将边
柄固定住。
请将边柄设在适合于操作的位置，然后
旋紧边柄扣。
电钻卡盘
卡盘
扳手
拧紧
松开
图 1
边柄
松开 拧紧
图 2
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要将深度计安装在边柄上时，请将深
度计插入边柄上的 U 形槽内，并根
据所需孔深来调节深度计的位置，然
后旋紧边柄扣。（图 3）
9. 冲击式到旋转式的转换（图 4）
在右侧和左侧位置之间移动变速杆，
以在冲击式（冲击加旋转）和旋转式
（只旋转）之间转换。
当在水泥、石头和砖瓦等硬质材料
上钻孔时，请将变速杆移到右侧位
置（如 标记所示）。钻头组合冲击
和旋转两种方式工作。
在金属、木材和塑料上钻孔时，请将
变速杆移到左侧位置（如“ ”标记
所示）。钻头象普通电钻一样只是旋
转。
注意！
○ 若被钻的材料用平常的只旋转的方式
就能钻，就不要用冲击效能。因为这
种功能不仅会降低钻的效率，而且容
易损坏钻头。
○ 在变速杆处于中间位置的状态下使用
冲击电钻可能导致危险发生。转换时，
请务必将变速杆移到正确位置。
注：
当从冲击电钻模式调到钻孔模式时，
选择杆可能无法顺畅转动。在此情况
下，将开关设为打开，并操作机器数
秒。此时锭子轴会被往前推，选择杆
随即便可顺畅移动。
10. 高低速换档 ：
换档前，应先确认电源开关是否入“切
断”位，且电钻是否完全停止转动。
按图5中箭头所示旋转变速转盘以改
变速度。
如果很难转动变速转盘，朝任一方向轻轻转动卡盘，然后再转动变速转盘。
刻在电钻壳体上的“１”为低速，“2”为高速。
如果很难转动变速转盘，朝任一方向轻轻转动卡盘，然后再转动变速转盘。
边柄
深度计
松开 拧紧
图 3
变速杆
冲击 旋转
图 4
变速
转盘
图 5
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11. 确认钻头旋转方向（图 6, 7）
通过逆时针方向旋转变速杆，钻头会
沿顺时针方向旋转（从后侧查看）
通过顺时针方向旋转变速杆，钻头会
沿逆时针方向旋转（从后侧查看）
注：
仅当机器静止时启动旋转变速杆。旋
转变速杆用于倒转机器的旋转方向。
然而，在启用开启/ 关闭（On/Off）
开关时并不适用。
注意！
○ 在将此电钻用作冲击电钻时，请总是
以顺时针旋转来使用冲击电钻。( 图 8)
○ 在中间位置用旋转变速杆操作工具可
能造成损坏。切换时，请确保旋转变
速杆在正确的位置。
使用方法
注意！
当安装或移除钻头和其它各类部件时，为避免发生事故，务必确认开关是否
关闭，并从插座上断开插头。工作小憩时或工作后也须切断电源开关。
1. 开关操作
○ 按下起动器时，电钻旋转 ；松开起动器时，电钻停止。
○ 改变拉起动器开关的程度可以控制电钻的转速。轻拉起动器开关转速较慢，
进一步拉起动器开关则转速变快。
图 6
旋转变速杆
图 8
图 7
旋转变速杆
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○ 可以用速度控制拨盘预选所需的旋
转速度。
顺时针转动速度控制拨盘提高速
度，逆时针转动降低速度。（图 9）
○ 拉起动器并推制动器，保持开关合
上状态，便于连续运转。当开关断
开时，再次拉起动器便可释放制动
器。
2. 钻孔
○ 钻孔时，请慢慢起动电钻，并逐渐提高转速。
○ 总是保持对钻头施加垂直的压力。钻孔时要保持足够的压力，但不要过分用
力按压而导致马达停转或使钻头偏斜。
○ 要尽量减少停转或损坏材料时，请减少对钻头施加的压力并在穿孔前降低压
力。
○ 如果电钻停转，则立即释放起动器，从工件上取出钻头并重新开始钻孔。请
勿按下和松开起动器以试图起动已停转的电钻，否则会损坏电钻。
○ 钻头口径越大，手臂受到的反作用力也越大。
必须注意不要因反作用力而失去对电钻的控制。为了获得良好的控制，脚步
要站稳，使用边柄，用双手握紧钻机，确保钻头与被钻面保持垂直。
○ 操作时钻头可能会变得过热，但完全无碍于操作。请勿在水或油中冷却钻头。
○ 如果将刚使用完的仍在继续旋转的钻头置于积聚了大量地面碎屑和粉尘的场
地，粉尘可能会被吸入至钻头的机械装置中。始终注意避免此类不合人意的
潜在问题的出现。
维护和检查
警告！
在维护和检查期间，一定要“切断”电源，并将插座上的插头拔掉。
1. 检查钻头
继续使用已磨损或损伤的钻头，不仅使工作效率大为降低，同时又会导致电
动机过载。因此，钻头必须时常检查，并根据情况需要换新件。
2. 检查安装螺钉
要经常检查安装螺钉是否紧固妥善。若发现螺钉松了，应立即重新扭紧，否
则会导致严重的事故。
3. 电动机的维护
电动机绕线是电动工具的“心脏部”应仔细检查有无损伤，是否被油液或水
沾湿。
图 9
起动器开关
低速 高速
速度控制拨盘
制动器
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4. 检查碳刷
为了保证长期安全操作和防止触电，必须仅由经授权的日立维修服务中心检
查和更换碳刷。
5. 更换电源线
如果需要更换电源线，则必须由此代理的生产厂商进行操作，以免发生危险。
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产品编号：987576
卡盘扳手
产品编号：303709
深度计
L1
L2
D
(mm)
D L1 L2 产品编号
3.2 65 35 939875
4.8 85 40 939879
5.5 100 65 939882
6.4 100 65 939884
8.0 100 65 931852
10.0 120 70 931854
12.0 120 70 971704
13.0 160 110 931855
14.3 160 110 931776
16.0 160 110 971670
产品编号：338768
边柄
产品编号：338762
塑料运输箱
选择附件
有关详细信息请联系日立授权服务中心。
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GENERAL POWER TOOL SAFETY WARNINGS
WARNING
Read all safety warnings and all instructions.
Failure to follow the warnings and instructions may result in electric shock, fire and/or serious
injury.
Save all warnings and instructions for future reference.
The term “power tool” in the warnings refers to your mains-operated (corded) power tool or
battery-operated (cordless) power tool.
1) Work area safety
a) Keep work area clean and well lit.
Cluttered or 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 or 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.
CONTENTS
GENERAL POWER TOOL SAFETY WARNINGS ........................................12
IMPACT DRILL SAFETY WARNINGS .........................................................14
SYMBOLS ....................................................................................................15
SPECIFICATIONS........................................................................................15
STANDARD ACCESSORIES ....................................................................... 16
APPLICATIONS............................................................................................16
PRIOR TO OPERATION...............................................................................16
HOW TO USE...............................................................................................19
MAINTENANCE AND INSPECTION ............................................................ 20
SELECTING ACCESSORIES.......................................................................21
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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.
f) If operating a power tool in a damp location is unavoidable, use a residual
current device (RCD) protected supply.
Use of an RCD 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 personal protective equipment. Always wear eye protection.
Protective equipment such as dust mask, non-skid safety shoes, hard hat, or hearing
protection used for appropriate conditions will reduce personal injuries.
c) Prevent unintentional starting. Ensure the switch is in the offposition before
connecting to power source and/or battery pack, picking up or carrying the
tool.
Carrying power tools with your finger on the switch or energising power tools that have
the switch on invites accidents.
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 dust collection 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.
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c) Disconnect the plug from the power source and/or the battery pack from the
power tool before making any adjustments, changing accessories, or storing
power tools.
Such preventive safety measures reduce the risk of starting the power tool
accidentally.
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 toolʼs
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, taking into account the working conditions and the work to be
performed.
Use of the power tool for operations different from those intended could result in a
hazardous situation.
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.
CAUTION
Keep children and infirm persons away.
When not in use, tools should be stored out of reach of children and infirm persons.
IMPACT DRILL SAFETY WARNINGS
1 . Wear ear protectors when impact drilling.
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 or its own cord.
Cutting accessory contacting a “live” wire may make exposed metal parts of the power tool
“live” and could give the operator an electric shock.
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SYMBOLS
WARNING
The following show symbols used for the machine. Be sure that you understand their
meaning before use.
Read all safety warnings and all
instructions. ---/min revolutions per minute
V Rated voltage Rotation only function
A Current Rotation and impact function
n0
No-load speed Class II tool
SPECIFICATIONS
Voltage* (110V, 120V, 220V, 230V, 240V)
Power input* 860 W
Speed change 1 2
No-load speed 0
– 1100 /min 0 – 3000 /min
Capacity
Steel 13 mm 8 mm
Concrete 20 mm 13 mm
Wood 40 mm 25 mm
Full load impact rate 8100 /min 22000 /min
Weight (without cord) 3.0 kg
* Be sure to check the nameplate on product as it is subject to change by areas.
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STANDARD ACCESSORIES
In addition to the main unit (1 unit), the package contains the accessories listed in the below.
1 Plastic Carrying Case
(Code No. 338762)
1
2
Side Handle
(Code No. 338768)
1
3
Depth Gauge
(Code No. 303709)
1
4
Chuck Wrench
(Code No. 987576)
1
APPLICATIONS
○ By combined actions of ROTATION and IMPACT:
Boring holes in hard materials (concrete, marble, granite, tiles, etc.)
○ By ROTATIONAL action:
Boring holes in metal, wood and plastic.
PRIOR TO OPERATION
1. Power source
Ensure that the power source to be utilized conforms to the power requirements specified
on the product nameplate.
2. Power switch
Ensure that the power switch is in the OFF position. If the plug is connected to a receptacle
while the power switch is in the ON position, the power tool will start operating immediately,
which could cause a serious accident.
3. Extension cord
When the work area is removed from the power source, use an extension cord of sufficient
thickness and rated capacity. The extension cord should be kept as short as practicable.
4. Check the receptacle
If the receptacle only loosely accepts the plug, the receptacle must be repaired.
Contact a licensed electrician to make appropriate repairs.
If such a faulty receptacle is used, it may cause overheating, resulting in a serious hazard.
5. Confirming condition of the environment
Confirm that the work site is placed under appropriate conditions conforming to prescribed
precautions.
6. Selecting the appropriate drill bit
○ When boring concrete or stone
Use the drill bits specified in the Optional Accessories.
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○ When boring metal or plastic
Use an ordinary metalworking drill bit.
○ When boring wood
Use an ordinary woodworking drill bit.
However, when drilling 6.5 mm or smaller holes,
use a metalworking drill bit.
7. Mounting and dismounting of the bit (Fig. 1)
(1) Open the chuck jaws, and insert the bit into the
chuck.
(2) Place the chuck wrench in each of the three
holes in the chuck, and turn it in the clockwise
direction (viewed from the front side). Tighten
securely.
(3) To remove the bit, place the chuck wrench into
one of the holes in the chuck and turn it in the
counter-clockwise direction.
8. Fixing the side handle (Fig. 2)
Attach the side handle to the mounting part.
Rotate the side handle grip in a clockwise
direction to secure it.
Set the side handle to a position that is suited to
the operation and then securely tighten the side
handle grip.
To attach a depth gauge on the side handle,
insert the gauge into the U-shaped groove on
the side handle, adjust the position of the depth
gauge in accordance with the desired depth of
the hole, and firmly tighten the side handle grip.
(Fig. 3)
9. IMPACT to ROTATION changeover (Fig. 4)
Shift the change lever between the right and left
positions to switch easily between IMPACT
(rotation and impact) and ROTATION (rotation
only), respectively.
To bore holes in hard materials such as
concrete, stone and tiles, shift the change
lever to the right-hand position (as indicated
by the mark). The drill bit operates by the
combined actions of impact and rotation.
To bore holes in metal, wood and plastic,
shift the change lever to the left-hand
position (as indicated by the “ ” mark). The
drill bit operates by rotational action only, as
in the case of a conventional electric drill.
Drill chuck
Chuck
wrench
Tighten
Loosen
Fig. 1
Side handle
Loosen Tighten
Fig. 2
Side handle
Depth gauge
Loosen Tighten
Fig. 3
Change lever
Impact Rotation
Fig. 4
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CAUTION
○ Do not use the impact drill in the IMPACT function if the material can be bored by
rotation only. Such action will not only reduce drill efficiency, but may also damage
the drill tip.
○ Operating the impact drill with the change lever in mid-position may result in
damage. When switching, make sure that you shift the change lever to the correct
position.
NOTE
The change lever may not shift smoothly when
changing from impact drill mode to drill mode.
In this case, switch ON and operate the
machine for a few seconds. The spindle shaft
will then be pushed forward, and the change
lever can be moved smoothly.
10. High-speed/Low-speed changeover:
Prior to changing speed, ensure that the
switch is in the OFF position, and the drill has
come to a complete stop. To change speed,
rotate the gear shift dial as indicated by the
arrow in Fig. 5. The numeral “1” engraved on
the drill body denotes low speed, the numeral
“2” denotes high speed.
If it is hard to turn the gear shift dial, turn the
chuck slightly in either direction and then turn
the gear shift dial again.
11. Check the rotational direction (Fig. 6, 7)
The bit rotates clockwise (viewed from the
rear side) by turning the rotational change
lever counterclockwise.
The bit rotates counterclockwise (viewed
from the rear side) by turning the rotational
change lever clockwise.
NOTE
Actuate the rotational change lever only
when the machine is at standstill.
The rotational change lever is used to
reverse the rotational direction of the
machine. However, this is not possible with
the On/Offswitch actuated.
Gear
Shift Dial
Fig. 5
Fig. 6
Rotational change
lever
Rotational change
lever
Fig. 7
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CAUTION
○ Always use the impact drill with clockwise
rotation, when using it as an impact drill.
(Fig. 8)
○ Operating the tool with the rotational
change lever in mid-position may result in
damage.When switching, make sure that
you shift the rotational change lever to the
correct position.
HOW TO USE
CAUTION
To prevent accidents, make sure to turn the switch offand disconnect the plug
from the receptacle when the drill bits and other various parts are installed or
removed. The power switch should also be turned offduring a work break and after
work.
1. Switch operation
○ When the trigger is depressed, the tool rotates. When the trigger is released, the tool stops.
○ The rotational speed of the drill can be controlled by varying the amount that the trigger
switch is pulled. Speed is low when the trigger switch is pulled slightly and increases as the
trigger switch is pulled more.
○ The desired rotation speed can be pre-
selected with the speed control dial.
Turn the speed control dial clockwise for
higher speed and counterclockwise for
lower speed. (Fig. 9)
○ Pulling the trigger and pushing the stopper,
it keeps the switched-on condition which
is convenient for continuous running.
When switching off, the stopper can be
disconnected by pulling the trigger again.
2. Drilling
○ When drilling, start the drill slowly, and gradually increasing speed as you drill.
○ Always apply pressure in a straight line with the bit. Use enough pressure to keep drilling,
but do not push hard enough to stall the motor or deflect the bit.
○ To minimize stalling or breaking through the material, reduce pressure on drill and ease the
bit through the last part of the hole.
○ If the drill stalls, release the trigger immediately, remove the bit from the work and start
again. Do not click the trigger on and offin an attempt to start a stalled drill. This can
damage the drill.
Fig. 8
Fig. 9
Switch trigger
Low speed High speed
Speed control dial
Stopper
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○ The larger the drill bit diameter, the larger the reactive force on your arm.
Be careful not to lose control of the drill because of this reactive force.
To maintain firm control, establish a good foothold, use side handle, hold the drill tightly
with both hands, and ensure that the drill is vertical to the material being drilled.
○ The drill bit may become overheated during operation; however, it is sufficiently operable.
Do not cool the drill bit in water or oil.
○ Immediately after use, while it is still revolving, if the Drill is placed on a location where
considerable ground chips and dust have accumulated, dust may occasionally be
absorbed into the drill mechanism. Always pay attention to this undesirable possibility.
MAINTENANCE AND INSPECTION
WARNING
Be sure to switch power OFF and disconnect the plug from the receptacle during
maintenance and inspection.
1. Inspecting the drill bits
Since use of an abraded drill bits will cause motor malfunctioning and degraded efficiency,
replace the drill bits with a new one or resharpening without delay when 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. Inspecting the carbon brushes
For your continued safety and electrical shock protection, carbon brush inspection and
replacement on this tool should ONLY be performed by a Hitachi Authorized Service
Center.
5. Replacing supply cord
If the replacement of the supply cord is necessary, it has to be done by Hitachi Authorized
Service Center to avoid a safety hazard.
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