Hitachi DH 24PD User Manual
INSTRUCTION MANUAL
AND
SAFETY INSTRUCTIONS
FOR
ROTARY HAMMER
MODEL DH 24PD
WARNING:
Improper and unsafe use of this power tool can result in
death or serious bodily injury!
This manual contains important information about product safety. Please read and understand this manual before
operating the power tool. Please keep this manual available for others before they use the power tool.
DOUBLE INSULATION
— CONTENTS —
Page
IMPORTANT INFORMATION ...................................................................................3
MEANINGS OF SIGNAL WORDS ...........................................................................3
SAFETY ........................................................................................................................4
GENERAL SAFETY RULES ......................................................................................4
SPECIFIC SAFETY RULES AND SYMBOLS ...........................................................7
DOUBLE INSULATION FOR SAFER OPERATION ..................................................8
FUNCTIONAL DESCRIPTION .................................................................................9
NAME OF PARTS .....................................................................................................9
SPECIFICATIONS .....................................................................................................9
ASSEMBLY AND OPERATION .............................................................................10
APPLICATIONS.......................................................................................................10
PRIOR TO OPERATION .......................................................................................... 10
HOW TO USE .........................................................................................................12
MAINTENANCE AND INSPECTION ....................................................................18
ACCESSORIES .........................................................................................................19
STANDARD ACCESSORIES ..................................................................................19
OPTIONAL ACCESSORIES ....................................................................................19
2
IMPORTANT INFORMATION
Read and understand all of the operating instructions, safety precautions and warnings in the Instruction Manual before operating or maintaining this power tool.
Most accidents that result from power tool operation and maintenance are caused
by the failure to observe basic safety rules or precautions. An accident can often be
avoided by recognizing a potentially hazardous situation before it occurs, and by
observing appropriate safety procedures.
Basic safety precautions are outlined in the “SAFETY” section of this Instruction
Manual and in the sections which contain the operation and maintenance instructions.
Hazards that must be avoided to prevent bodily injury or machine damage are identified by WARNINGS on the power tool and in this Instruction Manual.
Never use this power tool in a manner that has not been specifically recommended
by HITACHI, unless you first confirm that the planned use will be safe for you and
others.
MEANINGS OF SIGNAL WORDS
WARNING indicates a potentially hazardous situations which, if ignored, could re-
sult in serious personal injury.
CAUTION indicates a hazardous situations which, if ignored, could result in moderate personal injury, or could cause machine damage.
NOTE emphasizes essential information.
3
GENERAL SAFETY RULES
SAFETY
WARNING
: Read and understand all instructions.
Failure to follow all instructions listed below, may result in electric shock, fire and/or serious personal injury.
SAVE THESE INSTRUCTIONS
1. Work Area
(1) Keep your work area clean and well lit. Cluttered benches and dark areas
invite accidents.
(2) Do not operate power tools in explosive atmospheres, such as in the pres-
ence of flammable liquids, gases, or dust. Power tools create sparks which
may ignite the dust or fumes.
(3) Keep bystanders, children, and visitors away while operating a power tool.
Distractions can cause you to lose control.
2. Electrical Safety
(1) Double Insulated tools are equipped with a polarized plug (one blade is wider
than the other.) This plug will fit in a polarized outlet only one way. If the
plug does not fit fully in the outlet, reverse the plug. If it still does not fit,
contact a qualified electrician to install a polarized outlet. Do not change the
plug in any way. Double Insulation
grounded power cord and grounded power supply system.
(2) Avoid body contact with grounded surfaces such as pipes, radiators, ranges
and refrigerators. There is an increased risk of electric shock if your body is
grounded.
(3) Don’t expose power tools to rain or wet conditions. Water entering a power
tool will increase the risk of electric shock.
(4) Do not abuse the cord. Never use the cord to carry the tools or pull the plug
from a receptacle. Keep cord away from heat, oil, sharp edges or moving
parts. Replace damaged cords immediately. Damaged cords increase the
risk of electric shock.
(5) When operating a power tool outside, use an outdoor extension cord marked
“W-A” or “W”. These cords are rated for outdoor use and reduce the risk of
electric shock.
3. Personal Safety
(1) Stay alert, watch what you are doing and use common sense when operat-
ing a power tool. Do not use tool while tired or under the influence of drugs,
alcohol, or medication. A moment of inattention while operating power tools
may result in serious personal injury.
eliminates the need for the three wire
4
(2) Dress properly. Do not wear loose clothing or jewelry. Contain long hair.
Keep your hair, clothing, and gloves away from moving parts. Loose clothes,
jewelry, or long hair can be caught in moving parts.
(3) Avoid accidental starting. Be sure switch is off before plugging in. Carrying
tools with your finger on the switch or plugging in tools that have the switch
on invites accidents.
(4) Remove adjusting keys or switches before turning the tool on. A wrench or
a key that is left attached to a rotating part of the tool may result in personal
injury.
(5) Do not overreach. Keep proper footing and balance at all times. Proper foot-
ing and balance enables better control of the tool in unexpected situations.
(6) Use safety equipment. Always wear protective grasses. Dust mask, non-
skid safety shoes, hard hat, or ear plugs must be used for appropriate conditions.
4. Tool Use and Care
(1) Use clamps or other practical way to secure and support the workpiece to a
stable platform. Holding the work by hand or against your body is unstable
and may lead to lose of control.
(2) Do not force tool. Use the correct tool for your application. The correct tool
will do the job better and safer at the rate for which it is designed.
(3) Do not use tool if switch does not turn it on or off. Any tool that cannot be
controlled with the switch is dangerous and must be repaired.
(4) Disconnect the plug form the power source before making any adjustments,
changing accessories, or storing the tool. Such preventive safety measures
reduce the risk of starting the tool accidentally.
(5) Store idle tools out of reach of children and other untrained persons. Tools
are dangerous in the hand of untrained users.
(6) Maintain tools with care. Keep cutting tools sharp and clean. Properly main-
tained tools, with sharp cutting edges are less likely to bind and are easier to
control.
(7) Check for misalignment or binding of moving parts, breakage of parts, and
any other condition that may affect the tools operation. If damaged, have
the tool serviced before using. Many accidents are caused by poorly main-
tained tools.
(8) Use only accessories that are recommended by the manufacturer for your
model. Accessories that may be suitable for one tool, may become hazard-
ous when used on another tool.
5. Service
(1) Tool service must be performed only by qualified repair personnel. Service
or maintenance performed by unqualified personnel could result in a risk of
injury.
5
(2) When servicing a tool, use only genuine Hitachi replacement parts. Follow
instructions in the Maintenance section of this manual. Use of unauthorized
parts or failure to follow Maintenance Instruction may create a risk of electric
shock or injury.
6. Never touch moving parts.
Never place your hands, fingers or other body parts near the tool’s moving parts.
7. Never operate without all guards in place.
Never operate this tool without all guards or safety features in place and in proper
working order. If maintenance or servicing requires the removal of a guard or
safety feature, be sure to replace the guard or safety feature before resuming
operation of the tool.
8. Use right tool.
Don’t force small tool or attachment to do the job of a heavy-duty tool.
Don’t use tool for purpose not intended — for example — don’t use circular saw
for cutting tree limbs or logs.
9. Never use a power tool for applications other than those specified.
Never use a power tool for applications other than those specified in the Instruction Manual.
10.Handle tool correctly.
Operate the tool according to the instructions provided herein. Do not drop or
throw the tool. Never allow the tool to be operated by children, individuals unfamiliar with its operation or unauthorized personnel.
11.Keep all screws, bolts and covers tightly in place.
Keep all screws, bolts, and plates tightly mounted. Check their condition periodically.
12.Do not use power tools if the plastic housing or handle is cracked.
Cracks in the tool’s housing or handle can lead to electric shock. Such tools
should not be used until repaired.
13.Blades and accessories must be securely mounted to the tool.
Prevent potential injuries to yourself or others. Blades, cutting implements and
accessories which have been mounted to the tool should be secure and tight.
14.Keep motor air vent clean.
The tool’s motor air vent must be kept clean so that air can freely flow at all
times. Check for dust build-up frequently.
15.Operate power tools at the rated voltage.
Operate the power tool at voltages specified on its nameplate.
If using the power tool at a higher voltage than the rated voltage, it will result in
abnormally fast motor revolution and may damage the unit and the motor may
burn out.
16.Never use a tool which is defective or operating abnormally.
If the tool appears to be operating unusually, making strange noises, or otherwise appears defective, stop using it immediately and arrange for repairs by a
Hitachi authorized service center.
6
17.Never leave tool running unattended. Turn power off.
Don’t leave tool until it comes to a complete stop.
18.Carefully handle power tools.
Should a power tool be dropped or struck against hard materials inadvertently,
it may be deformed, cracked, or damaged.
19.Do not wipe plastic parts with solvent.
Solvents such as gasolie, thinner, benzine, carbon tetrachloride, and alcohol may
damage and crack plastic parts. Do not wipe them with such solvents.
Wipe plastic parts with a soft cloth lightly dampened with soapy water and dry
thoroughly.
SPECIFIC SAFETY RULES AND SYMBOLS
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 plugs when using the tool for extended periods. Prolonged exposure
to high intensity noise can cause hearing loss.
3. NEVER touch the tool bit with bare hands after operation.
4. NEVER wear gloves made of stuff liable to roll up such as cotton, wool, cloth or
string, etc.
5. ALWAYS attach the side handle and securely grip the Rotary Hammer.
6. ALWAYS be careful with buried object such as an underground wiring.
Touching these active wiring or electric cable with this tool, you may receive an
electric shock.
Comfirm if there are any buried object such as electric cable within the wall,
floor or ceiling where you are going to operate here after.
7. Definitions for symbols used on this tool
V ... volts
Hz ... hertz
A ... amperes
no ... no load speed
W ... watt
... Class II Consruction
- - -/min ... revolutions per minute
7
DOUBLE INSULATION FOR SAFER OPERATION
To ensure safer operation of this power tool, HITACHI has adopted a double insulation design. “Double insulation” means that two physically separated insulation
systems have been used to insulate the electrically conductive materials connected
to the power supply from the outer frame handled by the operator. Therefore, either
the symbol “
on the nameplate.
Although this system has no external grounding, you must still follow the normal
electrical safety precautions given in this Instruction Manual, including not using
the power tool in wet environments.
To keep the double insulation system effective, follow these precautions:
䡬 Only HITACHI AUTHORIZED SERVICE CENTER should disassemble or assemble
this power tool, and only genuine HITACHI replacement parts should be installed.
䡬 Clean the exterior of the power tool only with a soft cloth moistened with soapy
water, and dry thoroughly.
Never use solvents, gasoline or thinners on plastic components; otherwise the
plastic may dissolve.
” or the words and “Double insulation” appear on the power tool or
SAVE THESE INSTRUCTIONS
AND
MAKE THEM AVAILABLE TO
OTHER USERS OF THIS TOOL!
8
FUNCTIONAL DESCRIPTION
NOTE:
The information contained in this Instruction Manual is designed to assist you in
the safe operation and maintenance of the power tool.
Some illustrations in this Instruction Manual may show details or attachments
that differ from those on your own power tool.
NAME OF PARTS
Drill Bit
Dust Collecting Adaptor
Front Cap
Side Handle
Grip Nameplate
Change Lever
Dust bag
Fig. 1
Lever
Housing
Switch
SPECIFICATIONS
Motor Single-Phase, Series Commutator Motor
Power Source Single-Phase, 115V 60Hz
Current 5.7A
Capacity Concrete: 1/8" ~ 15/16" (3.4mm ~ 24mm)
Steel: 1/2" (13mm)
Wood: 1-1/4" (32mm)
No-Load Speed 0 – 1050/min.
Full-load Impact Rate 4400/min.
Weight 5.7 lbs (2.6 kg)
Dust collecting adaptor
Max. hole-drilling depth:
Diameter of drill: 1/8" ∼ 15/16" (3.4 mm ∼ 24 mm)
Length of drill (overall length): 10-5/8" (270 mm)
Dust bag capacity: 0.11 gallon (0.4 liters)
4" (100 mm) (adjustment possible between 0 and 4" (100 mm))
9
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