Hitachi C 18DBL user guide
Cordless Circular Saw
Model C 18DBL
Handling instructions
Note:
Before using this Power Tool, carefully read through these
HANDLING INSTRUCTIONS to ensure efficient, safe operation. It is
recommended that these INSTRUCTIONS be kept readily available
as an important reference when using this power tool.
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.
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, nonskid safety shoes, hard hat, or hearing protection
used for appropriate conditions will reduce
personal injuries.
1
c) Prevent unintentional starting. Ensure the switch
is in the off position 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.
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 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, 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) Battery tool use and care
a) Recharge only with the charger specified by the
manufacturer.
A charger that is suitable for one type of battery
pack may create a risk of fire when used with
another battery pack.
b) Use power tools only with specifically designated
battery packs.
Use of any other battery packs may create a risk
of injury and fire.
c) When battery pack is not in use, keep it away
from other metal objects like paper clips, coins,
keys, nails, screws, or other small metal objects
that can make a connection from one terminal
to another.
Shorting the battery terminals together may
cause burns or a fire.
d) Under abusive conditions, liquid may be ejected
from the battery; avoid contact. If contact
accidentally occurs, flush with water. If liquid
contacts eyes, additionally seek medical help.
Liquid ejected from the battery may cause
irritation or burns.
6) 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.
CIRCULAR SAW SAFETY WARNINGS
Cutting procedures
DANGER: Keep hands away from cutting area
a)
and the blade. Keep your second hand on auxiliary
handle, or motor housing.
If both hands are holding the saw, they cannot be
cut by the blade.
b) Do not reach underneath the workpiece.
The guard cannot protect you from the blade below
the workpiece.
c) Adjust the cutting depth to the thickness of the
workpiece.
Less than a full tooth of the blade teeth should be
visible below the workpiece.
d) Never hold piece being cut in your hands or across
your leg. Secure the workpiece to a stable platform.
It is important to support the work properly to
minimize body exposure, blade binding, or loss of
control.
e) Hold the power tool by insulated gripping surfaces
only, when performing an operation where the
cutting tool may contract hidden wiring.
Contact with a “live” wire will also make exposed
metal parts of the power tool “live” and could give
the operator an electric shock.
f) When ripping always use a rip fence or straight
edge guide.
This improves the accuracy of cut and reduces the
chance of blade binding.
g) Always use blades with correct size and shape
(diamond versus round) of arbour holes.
Blades that do not match the mounting hardware of
the saw will run eccentrically, causing loss of control.
h) Never use damaged or incorrect blade washers or
bolt.
The blade washers and bolt were specially designed
for your saw, for optimum performance and safety
of operation.
Kickback causes and related warnings
– kickback is a sudden reaction to a pinched, bound
or misaligned saw blade, causing an uncontrolled
saw to lift up and out of the workpiece toward the
operator;
– when the blade is pinched or bound tightly by the
kerf closing down, the blade stalls and the motor
reaction drives the unit rapidly back toward the
operator;
– if the blade becomes twisted or misaligned in the
cut, the teeth at the back edge of the blade can
dig into the top surface of the wood causing the
blade to climb out of the kerf and jump back toward
the operator.
Kickback is the result of saw misuse and/or incorrect
operating procedures or conditions and can be avoided
by taking proper precautions as given below.
a) Maintain a firm grip with both hands on the saw
and position your arms to resist kickback forces.
Position your body to either side of the blade, but
not in line with the blade.
Kickback could cause the saw to jump backwards,
but kickback forces can be controlled by the operator,
if proper precautions are taken.
b) When blade is binding, or when interrupting a cut
for any reason, release the trigger and hold the saw
motionless in the material until the blade comes
to a complete stop.
Never attempt to remove the saw from the work
or pull the saw backward while the blade is in
motion or kickback may occur.
Investigate and take corrective actions to eliminate
the cause of blade binding.
c) When restarting a saw in the workpiece, centre
the saw blade in the kerf and check that saw teeth
are not engaged into the material.
If saw blade is binding, it may walk up or kickback
from the workpiece as the saw is restarted.
d) Support large panels to minimise the risk of blade
pinching and kickback.
Large panels tend to sag under their own weight.
Supports must be placed under the panel on both
sides, near the line of cut and near the edge of the
panel.
e) Do not use dull or damaged blades.
Unsharpened or improperly set blades produce
narrow kerf causing excessive friction, blade binding
and kickback.
f) Blade depth and bevel adjusting locking levers must
be tight and secure before making cut.
If blade adjustment shifts while cutting, it may
cause binding and kickback.
g) Use extra caution when sawing into existing walls
or other blind areas.
The protruding blade may cut objects that can cause
kickback.
2
Lower guard function
a) Check lower guard for proper closing before each
use. Do not operate the saw if lower guard does
not move freely and close instantly. Never clamp
or tie the lower guard into the open position.
If saw is accidentally dropped, lower guard may be
bent.
Raise the lower guard with the retracting handle
and make sure it moves freely and does not touch
the blade or any other part, in all angles and depths
of cut.
b) Check the operation of the lower guard spring. If
the guard and the spring are not operating
properly, they must be serviced before use.
Lower guard may operate sluggishly due to damaged
parts, gummy deposits, or a build-up of debris.
c) Lower guard may be retracted manually only for
special cuts such as “plunge cuts” and “compound
cuts”. Raise lower guard by retracting handle and
as soon as blade enters the material, the lower
guard must be released.
For all other sawing, the lower guard should operate
automatically.
d) Always observe that the lower guard is covering
the blade before placing saw down on bench or
floor.
An unprotected, coasting blade will cause the saw
to walk backwards, cutting whatever is in its path.
Be aware of the time it takes for the blade to stop
after switch is released.
PRECAUTIONS ON USING CORDLESS
CIRCULAR SAW
1. Always charge the battery at a temperature of 10
– 40°C. A temperature of less than 10°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 20 – 25°C.
2. When one charging is completed, leave the charger
for about 15 minutes before the next charging of
battery.
Do not charge more than two batteries
consecutively.
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. Shortcircuiting 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.
3
10. 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.
11. Wear earplugs to protect your ears during
operation.
12. Always hold the handle of the power tool firmly.
Otherwise the counterforce produced may result
in inaccurate and even dangerous operation.
13. Do not use saw blades which are deformed or
cracked.
14. Do not use saw blades made of high speed steel.
15. Do not use saw blades which do not comply with
the characteristics specified in these instructions.
16. Do not stop the saw blades by lateral pressure
on the disc.
17. Always keep the saw blades sharp.
18. Ensure that the lower guard moves smoothly and
freely.
19. Never use the circular saw with its lower guard
fixed in the open position.
20. Ensure that the retraction mechanism of the guard
system operates correctly.
21. The saw blades body must be thinner than the
riving knife and the width of cut, or kerf (with
teeth set) must be greater than the thickness of
the riving knife.
22. Never operate the circular saw with the saw blade
turned upward or the side.
23. Ensure that the material is free of foreign matters
such as nails.
24. The riving knife should always be used except
when plunging in the middle of the workpiece.
25. The saw blades diameter should be 125 mm.
26. Be careful of brake kickback.
This circular saw features an electric brake that
functions when the switch is released. As there
is some kickback when the brake functions, be
sure to hold the main body securely.
27. Avoid cutting in the state where the base has
floated up from the material.
When blade is binding, or when interrupting a cut
for any reason, release the trigger and hold the
saw motionless in the material until the blade
comes to a complete stop. Never attempt to
remove the saw from the work or pull the saw
backward while the blade is in motion or KICKBACK
may occur. Investigate and take corrective actions
to eliminate the cause of blade binding.
28. Support large panels to minimize the risk of blade
pinching and KICKBACK. Large panels tend to sag
under their own weight (Fig. 2). Supports must
be placed under the panel on both sides, near the
line of cut and near the edge of the panel as
shown in Fig. 1.
To minimize the risk of blade pinching and kickback.
When cutting operation requires the resting of the
saw on the work piece, the saw shall be rested
on the larger portion and the smaller piece cut
off.
To avoid kickback, do support
board or panel near the cut.
Fig. 1
Don’t support board or panel away
from the cut.
Fig. 2
29. Use extra caution when making a “Pocket Cut”
into existing walls or other blind areas. The
protruding blade may cut objects that can cause
KICKBACK.
NEVER place your hand or fingers behind the saw
(Fig. 3). If kickback occurs, the saw could easily
jump backwards over your hand, possibly causing
severe injury.
Fig. 3
30. WARNING: It is important to support the work
piece properly and to hold the saw firmly to
prevent loss of control which could cause personal
injury. Fig. 4 illustrates typical hand support of the
saw.
A TYPICAL
ILLUSTRATION
OF PROPER
HAND
SUPPORT
Fig. 4
31. Place the wider portion of the saw base on that
part of the work piece which is solidly supported,
not on the section that will fall off when the cut
is made. As examples, Fig. 5 illustrates the RIGHT
way to cut off the end of board, and Fig. 6 the
WRONG way. If the work piece is short or small,
clamp is down.
DON’T TRY TO HOLD SHORT PLACES BY HAND!
Fig. 5
Fig. 6
32. Never attempt to saw with the circular saw held
upside down in a vise. This is extremely dangerous
and can lead to serious accidents (Fig. 7).
Vise
Fig. 7
CAUTION ON LITHIUM-ION BATTERY
To extend the lifetime, the lithium-ion battery equips
with the protection function to stop the output.
In the cases of 1 to 3 described below, when using
this product, even if you are pulling the switch, the
motor may stop. This is not the trouble but the result
of protection function.
1. When the battery power remaining runs out, the
motor stops.
In such case, charge it up immediately.
2. If the tool is overloaded, the motor may stop. In
this case, release the switch of tool and eliminate
causes of overloading. After that, you can use it
again.
3. If the battery is overheated under overload work,
the battery power may stop.
In this case, stop using the battery and let the
battery cool. After that, you can use it again.
Furthermore, please heed the following warning and
caution.
WARNING
In order to prevent any battery leakage, heat generation,
smoke emission, explosion and ignition beforehand,
please be sure to heed the following precautions.
4
Loading...