Nitto ATRA ACE CLA-2720 User manual

2
GENERAL SAFETY RULES
WARNING
TO OPERATORS
Always Wear Proper Clothing
●Do not wear loose clothing. Loose clothing can
become caught in the drilling machine. This could
cause severe injuries. Be careful that loose clothing
does not come into contact with the machine.
●Wear non-skid footwear. If you lose your footing,
you could contact moving portions of the machine.
This could cause severe injuries. Always wear non-
skid footwear and remain balanced when using the
drilling machine.
●Be careful of long hair. Wear a hat or a hair net to
contain long hair. Long hair can become caught in
the drilling machine. This will cause severe injuries.
Be careful that long hair does not come into contact
with the drilling machine.
Always Wear Suitable Eye Protection
●Always wear suitable eye protection. The operation
of your drilling machine will cause flying chips and
particles. These will cause severe eye injuries. You
must always wear suitable eye protection.
●Not all glasses are suitable eye protection. Wear
only suitable eye protection that comply with ANSI
standards. Not all of the lenses are shock resistant.
Ordinary glasses will not provide sufficient eye
protection.
Glasses only for visual correction are not appropriate
to be used as safety glasses.
Always Wear Suitable Hearing Protection
●Always wear suitable hearing protection. The
operation of your drilling machine will cause big sound
occurs. These will cause severe hearing loss injuries.
You must always wear suitable hearing protection.
Always Wear respiratory protective equipment (PPE)
●Always Wear respiratory protective equipment
(PPE) when working in an environment where dust
particles are generated in operation.
Maintain Good Posture
●Always wear non-skid footwear and maintain good
posture. Do not use the drilling machine when you
are tired. Fatigue or loss of balance could cause
you to lose control of the machine. This could cause
severe injuries. Always stay balanced. Always keep
good posture. Stop using the machine if you are tired.
Never Touch the Cutting Tip
●Never touch the moving or cutting tip. Contact with
the moving tip will cause severe injuries. Always
keep all parts of your body away from the cutting tip.
Always keep your hand and clothing away from the
cutting tip.
ABOUT THE WORK AREA
Keep Work Area Clean
●Always keep your work area clean. Cluttered work
areas cause accidents. Always keep clear of other
objects.
●Never use the magnetic drilling machine when it is
wet. Always use the drilling machine in a dry area.
Do not use the drilling machine in the rain. If you
use the machine when it is wet you can get electric
shock. If you use the machine in the rain you can
get an electric shock.
●Always use the drilling machine in a well-lighted
area. Do not use the drilling machine in the dark.
●Avoid all flammable materials. Use of the drilling
machine may cause a spark that could ignite a fire
or an explosion. Never use the machine near any
flammable material.
●Keep away from children. Always keep the drilling
machine away from children. Do not operate drilling
machine when children are present.
BEFORE OPERATION
Make sure that all parts are free from damage
●Make sure that the drilling machine is in good
operating condition. Operation of a damaged
machine could result in severe injuries. If there
is any damage to the machine, do not use the
machine. If there is any damage to the machine,
take it to an authorized Nitto dealer for repair.
●Do not attempt service or repair of the drilling
machine. All service or repair should be done by an
authorized Nitto dealer.
When a failure is observed with the switch, request
for repair to the sales agent where the product was
purchased or your nearest authorized Nitto dealer.
When a damage is observed with the power cord of
the battery charger, request for repair to the sales
agent where the product was purchased or your
nearest authorized Nitto dealer.
Do not use the machine that cannot be started or
stopped by the start switch.
Secure Your Work
●Always secure your work piece. Improperly mounted
work can become loose. This can cause severe
injuries. Always secure all work.
●Always use a vice or a clamp. Do not attempt to hold
any work piece with your hand. Attempting to hold a
work piece with your hand may cause severe injuries.
Always use a vice or clamp to hold the work piece.
●Always secure your drilling machine. Improperly
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mounted drilling machine can come loose. This can
cause severe injuries. Always secure the drilling
machine.
Avoid Clutter
●Always stay clear of other objects. Cluttered work
areas cause accidents. Always keep a clean work
area and stay away from other objects.
Always Remove Spanner Wrenches and
Adjustment Tools
●Always remove spanner wrenches and adjustment
tools after adjustments have been made to the
drilling machine. Always remove all adjustment tools
before using the drilling machine.
Always Use a Cutter that is Appropriate for Your
Work
●Always use a Cutter that is appropriate for your
work. Avoid heavy-duty work that is the beyond the
capacity of your drilling machine. If the work exceeds
the capacity of your drilling machine, this can cause
accidents and severe injuries. Always use the
drilling machine in accordance with its performance
specifications.
SAFE HANDLING
●Never leave the magnetic drilling machine
unattended while it is running. When the machine
is unattended, disconnect the power source. Do
not leave the work area until the machine comes to
a complete stop. Operating the machine while it is
unattended can case accidents that may result in
severe injuries.
●How to store the machine and battery pack.
Store the machine and battery pack at a dry area
under 50°C when not in use. Also, keep the machine
and battery pack out of the reach of children.
●Pay attention when carrying the machine.
Keep your hands away from the start switch when
carrying the machine.
Do not hold parts other than the handle to carry the
machine.
MAINTENANCE
Do not take apart or modify your magnetic drilling
machine.
●Do not attempt to disassemble or modify your
magnetic drilling machine.
●Do not modify your magnetic drilling machine.
Modifications can cause accident and severe
injuries.
●All service and repairs must be performed by an
authorized Nitto dealer. Any attempt to service or
repair the machine yourself may result in an accident
and severe injuries.
Check all Parts for Damage.
●Always inspect the magnetic drilling machine before
use.
●Always check that the pilot pin and cutter are in
good condition. Use of the machine with worn pilot
pins or worn cutter can cause accidents and severe
injuries.
●Inspect all cutter before you put them on the
magnetic drilling machine.
●Do not operate the magnetic drilling machine with a
damaged or worn cutter. Do not operate the machine
with a damaged or worn pilot pin. Do not operate the
machine with any damaged accessory. Operating
the machine with any damaged part or accessory
can cause accidents and severe injuries. If there is
any damage to the magnetic drilling machine do not
operate the machine. Take it to an authorized Nitto
Dealer for repair.
●Always have the magnetic drilling machine repaired
at an authorized Nitto dealer. Always take the
magnetic drilling machine to an authorized Nitto
dealer for service, repair and replacement parts. If
you cannot locate an authorized Nitto dealer near
you, please contact your sales representative.
●Always use Nitto genuine parts. The use of improper
or non-Nitto parts can cause accidents and severe
injuries. Never use unauthorized parts. To obtain
genuine Nitto parts, contact your sales agent.
●Do not remove any nameplate from your magnetic
drilling machine. Do not remove any labels from
your magnetic drilling machine. If any label or
nameplate is damaged contact your sales agent for
a replacement.
●When a damage is observed with the power cord of
the battery charger, request for replacement at your
nearest authorized Nitto dealer to avoid accidents.
GENERAL POWER TOOL SAFETY WARNINGS
WARNING
●Read all safety warnings and all instructions. Failure
to follow the warnings and instructions may result in
fire and 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.
<Work area safety>
●Keep work area clean and well lit. Cluttered or
dark areas invite accidents.
●Do not operate power tools in explosive
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atmospheres, such as in the presence of
flammable liquids, gases or dust. Power tools
create sparks which may ignite the dust or fumes.
●Keep children and bystanders away while
operating a power tool. Distractions can cause you
to lose control.
<Electric safety>
●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.
●Do not expose power tools to rain or wet
conditions. Water entering a power tool will increase
the risk of electric shock.
<Personal safety>
●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.
●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.
●Prevent unintentional starting. Ensure the switch
is in the off-position before connecting to battery
pack, picking up or carrying the tool. Carrying
power tools with your finger on the switch or
energizing power tools that have the switch on
invites accidents.
●Remove any adjusting wrench before turning the
power tool on. A wrench left attached to a rotating
part of the power tool may result in personal injury.
●Do not overreach. Keep proper footing and
balance at all times. This enables better control of
the power tool in unexpected situations.
●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.
<Power tool use and care>
●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.
●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.
●Disconnect 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.
●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.
●Maintain power tools. Check for misalignment or
binding of moving parts, breakage of parts and
any other condition that may affect the power
tool’s operation. If damaged, have the power tool
repaired before use. Many accidents are caused
by poorly maintained power tools.
●Keep cutting tools sharp and clean. Properly
maintained cutting tools with sharp cutting edges
are less likely to bind and are easier to control.
●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.
<Battery tool use and care>
●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.
●Use power tools only with specifically designated
battery packs. Use of any other battery packs may
create a risk of injury and fire.
●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.
●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.
<Service>
●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.
●Hold power tool by insulated gripping surface,
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when performing an operation where the cutting
accessory may contact hidden wiring. Cutting
accessory contacting a “live” wire may make
exposed metal parts of the power tool “live” and
could give the operator an electric shock.
Drill safety warnings
- Wear ear protectors when impact drilling.
Exposure to noise can cause hearing loss.
- Use auxiliary handle(s), if supplied with the tool.
Loss of control can cause personal injury.
GENERAL SAFETY RULES FOR
CORDLESS MACHINE
WARNING
●Do not use the battery pack other than for the
cordless machine of Nitto.
Use the battery charger and battery pack specified
by Nitto described in the instruction manual and
catalog. Use of a battery pack not specified by Nitto
may cause machine failure, injury or damage.
●Do not use deteriorated battery pack.
Use of deteriorated battery pack may cause liquid
leak, heat generation or explosion of the battery.
●Use proper method for charging.
Use a power source appropriate for the rated
voltage of the battery charger. Do not use power
source of direct current or engine generator. It may
cause failure or fire.
Do not charge the battery pack when the
temperature is less than 0°C or over 40°C. It may
cause explosion or fire.
Charge the battery pack at a well-ventilated area.
Do not cover the battery pack or battery charger with
a cloth, etc. It may cause explosion, smoke or fire.
When not in use, unplug the power supply plug of
the battery charger from the electric outlet. Leaving
the machine plugged may cause electric shock,
smoke or fire.
●Do not use or charge at an area where there is
flammable liquid or gas.
It may cause smoke, ignition or explosion.
●Do not use or charge in rain or at damp or wet
areas.
It may cause electric shock or smoke.
●Do not short circuit between terminals of the
battery pack.
Short circuit by water, cutting chips and other
conductive materials may cause smoke, ignition or
explosion.
●Be careful of electric shock.
Do not touch the power supply plug, terminals or
their peripheral areas of the battery pack and battery
charger with wet hands. It may cause electric shock.
●Turn the switch of the machine off and disconnect
the battery pack from the machine in cases
described below.
When not in use or when repairing.
When replacing accessories such as a drill.
When work is finished and storing the machine.
When other dangerous situation is assumed.
●Avoid abrupt starting.
Check that the switch is turned off before attaching
the battery pack. Do not touch the arbor or drill when
attaching the battery pack.
●Use specified accessories and attachments.
Use specified accessories and attachments
described in this instruction manual and Nitto
catalog. Use of other accessories and attachments
may cause an accident or injury.
●Do not place the battery pack in fire.
It may cause ignition or explosion.
●If the liquid of the battery pack leaks and gets into
your eyes, do not rub your eyes but immediately
wash your eyes with plenty of clean water such
as tap water and consult with a medical doctor.
●If the liquid of the battery pack leaks and comes
into contact with your skin or clothing,
immediately wash with plenty of clean water and
consult with a medical doctor since it may cause
skin infection or injury.
●Pay attention that the battery pack is clean from
chips and dust.
Prevent chips to fall on the battery pack when
working.
Do not leave the battery pack where chips or dust
accumulate when the battery pack is not in use.
Clean off chips and dust when storing the battery
pack and store it separately from metal parts.
Do not stick a nail or apply strong impact to the
battery pack.
●Do not apply heat or high pressure to the battery
pack by putting it in a microwave or in a
pressurized container.
●Immediately move the battery pack away from fire
when any leaking or smell is identified.
●Do not use the battery pack for other devices.
●Stop charging the battery pack when charging is
not completed even after the specified charging
time is significantly exceeded.
●Do not use the battery pack that has external
damage or significant deformation.
●Do not use at areas where strong static electricity
is generated.
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●Do not discard the battery pack with normal
garbage or place in fire.
●Keep the battery pack out of the reach of children.
●Use the battery pack properly following the
indicated specifications.
WARNING
This machine is not water proof.
Use the machine following the description below.
●Immediately wipe the electric drill or the machine
when any liquid such as cutting fluid or water is
applied.
●Do not operate with wet hand.
●Do not use in rain.
CAUTION
●Do not force feed the cutter while driling
manually.
Jetbroach and Hi-Broach cutters use a reduced wall
thickness to minimize cutting resistance, resulting in
faster hole productivity and less shavings. Pressure
required to feed a Jetbroach or Hi-Broach cutter
is far less than that of a twist drill bit; if too much
pressure is applied to the cutter, life and or breakage
may result.
●The color of LED changes according to the load
of the electric drill. Use it with LED in green or
yellow.
LED turns green or yellow when the load of the
electric drill is in normal condition and turns or blinks
in red when it is in overload condition. Decrease
the feeding rate of the drill when LED is turned or
blinking in red since the electric drill is in overload
condition and obtain a load with LED in green or
yellow when drilling.
●The power of the electric drill drops when
excessive load is applied to the electric drill
and LED starts blinking rapidly in red. When
load is applied continuously, the machine will
automatically stop and LED will start blinking in
white.
When further load is applied to the electric drill even
when LED is turned or blinking in red, the power
of the electric drill drops to protect the electric drill
and battery pack. The electric drill returns to normal
operation when the load is decreased before it stops
automatically due to overload. If the electric drill
stops automatically, turn the switch off and then turn
the switch back on to continue the operation.
●Store the machine by keeping the electric drill at
lowered position when not in use.
The machine may fall when stored with the electric
drill at a lifted position.
●When energized, the magnet may exhibit a
buzzing sound or a slight hum.
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1 USAGE
This is a machine tool which attaches magnetically to mild steel and uses the power of Drill Motor to drill holes
with JETBROACH One-touch type or HI-BROACH One-touch Type.
2 CHECK THE CONTENTS OF THE PACKAGEKAGE
Check the contents and make sure that the tool is not damaged due to an accident during the transportation, if any.
The contents should correspond to the list as follows. Just in case there are some damaged or missing parts, contact
the sales agent from whom you purchased the tool or an authorized dealer.
THE CONTENTS OF THE PACKAGE AND ACCESSORIES
CLA-2720
Package Contents Q'ty check
ATRA ACE 1set
Hex. Socket Screw Key 3 1
Hex. Socket Screw Key 4 1
Spanner 8×10 1
Battery Charger 1set
Battery Pack 2set
TUBE 4×7 1
Package Contents Q'ty check
Cutting Oil 0.5ℓCan 1
Handle Assʼy1
Lashing belt 1
Jet Oiler (No.3013) 1
Instruction Manual 1
Guard 1
Hex. Socket Set Screw 8×28 1
Hex. Socket Head Cap Screw 5×12 1
Blade 1
Jet Oiler (No.3013) Lashing belt Guard
(Fig. 6) (Fig. 7) (Fig.8)
3 NAME OF PARTS
LED
Magnet switch
Lock screw
Blade Hex. Socket Head Cap Screw 5x12
Universal elbow
Motor cover
Battery pack
Battery cover
Electric drill switch
Belt attachment plate
Sleeve
Plug cushion rubber
Handle Ass’y
(Fig. 9)
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6-2 Cutter Usage
CAUTION
●Cutters other than one-touch type can not be used.
●For better working and greater safety, do not use
worn or broken cutters.
●When you need one-ouch type cutters or
accessories, refer to 10. Ordering Service Parts.
6-3 Cutter and Pilot Pin Combinations
WARNING
You must use a Pilot Pin which matches the cutter.
Pilot Pins differ according to cutter type, diameter, and
length (depth). An accident may be caused if the cutter
and Pilot Pin combination is wrong.
6 PREPARATIONS
WARNING
●Turn the magnet switch off and detach the battery pack from the machine when preparing.
6-1 Attaching handle Ass’y
<Attachment and detachment of handle Ass’y >
1. How to attach the handle Ass’y
- Insert the sleeve of the handle Ass’y in the pinion shaft while the sleeve is pulled toward the handle. (Fig. 13)
- After it is attached, check that the handle Ass’y will not be detached before use.
* The handleAss’y can be attached on either right or left of the machine. (Fig. 14)
* When the handle Ass’y interferes with the lock screw, attach the lock screw on the opposite side of the handle
Ass’y. Refer to 7-2-(3) Aligning with Punch Mark for attaching the lock screw.
2. How to detach the handle Ass’y
- The handleAss’y can be detached by pulling the sleeve of the handle Ass’y toward the handle.
Pinion Shaft
Sleeve
Lock screw
Handle Ass’y
(Fig. 13) (Fig. 14)
●Match the appropriate Pilot Pin to the cutter which is
to be used. (Fig. 15)
HBO 12 to 17mm dia.
Depth 25 mm
HBO 17.5 to 27mm dia.
Depth 25 mm
06025 PN : TK01167
08025 PN : TJ12696
Pilot Pin HI-BROACH Cutters
81 mm
5 dia.
8 dia.
76 mm
6.35 dia.
08035 PN : TJ15859 JBO
17.5 to 27mm dia.
Depth 35 mm
91 mm
8 dia.
Pilot Pin JETBROACH Cutters
6.35 dia.
JBO 12 to 17mm dia.
Depth 25 mm
06025 PN : TK01167
81 mm
5 dia.
(Fig. 15)
●Pilot Pins differ according to the type, diameter and
length (depth) of the cutter. If the cutter and Pilot Pin
combination is wrong, the cutter will be damaged due
to failure to eject the slag (metal chip) or poor Cutting
Oil supply.
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・May cause inflammation if it enters the eyes.
Protective eye-wear should be used when handling to
prevent entry into the eyes.
・Skin contact may cause inflammation. Protective
gloves should be worn when handling to prevent
contact with the skin.
・May cause discomfort if mist or vapor is inhaled.
Breathing apparatus should be used when handling so
that mist or vapor should not be inhaled.
・Dilution should be carried out in accordance with the
Instruction Manuals.
・Keep it out of reach of children.
・Do not drink it.
(3) Emergency Treatment
・If it has entered eyes, immediately open the eyelids as
wide as possible and wash thoroughly with water for
at least 15 minutes. If there is inflammation, consult a
physician and follow the instructions.
・If it has contacted the skin, wash immediately with
soap and water. Soiled clothing should be removed
and laundered thoroughly before re-use. If there is
inflammation, consult a physician and follow the
instructions.
・If mist or vapor has been inhaled, immediately transfer
the patient to fresh air, cover his/her body with a
blanket and keep warm and quiet. Consult a physician
and follow the instructions.
・If it has been ingested, immediately give copious water
and induce vomiting. Consult a physician and follow
the instructions. If the patient is unconscious, do not
administer water or induce vomiting.
(4) In Case of Fire
・For a fire in the vicinity, wear protective equipment and
extinguish the fire approaching from the windward side
with foam, powder or CO2fire extinguishers.
(5) Method of Storage
・Seal after use to prevent admixture with dirt and/or
water.
・Store in a cool dark place away from direct sunlight
and rain.
(6) Method of Disposal
・Disposal of undiluted and diluted fluid should be
handled as waste fluid in accordance with the law by
a waste disposal specialist.
・Wash water should be treated by pH adjustment,
flocculation and settling, activated sludge treatment,
activated carbon absorption, etc., and discharged in
accordance with municipal standards.
・Since empty containers contain dregs, they should be
handled with care.
(7) Other
・If transferred to other containers for use, the names
of chemicals used in the workplace and the labeled
contents should be displayed and kept together with
the Instruction Manuals ready for immediate perusal.
・Anyone wishing to have further details may request
product safety data sheets from manufacturer.
・The inscribed details are based on currently available
information and data and updated by new knowledge.
・Items to be noted are aimed at normal handling.
Where special handling is involved, safety measures
appropriate to the application and method of handling
should be implemented.
・The inscribed details are submitted for your information
and do not imply assurances or acceptance of
responsibility.
CAUTION
(1) Use Nitto genuine blue Cutting Oil.
Cutting performance and life may be reduced when other
Cutting Oils are used.
(2) Dilute the Cutting Oil in the proportion of eight to ten
times with tap water.
Do not use well water for dilution.
(3) Put the cutting oil in the supplied jet oiler and connect
to the universal elbow of the machine using a tube of 4 ×
7 × 1000. (Fig. 21)
Jet Oiler
Tube
(Fig. 21)
Universal elbow
Tube
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8 TROUBLESHOOTING
WARNING
●Do not attempt to repair the tool by yourself.
This will cause damage to the tool and danger to
yourself when you use it again.
●If any of the following, or other symptoms occur,
or if there are other matters concerning usage
that you do not understand, please consult the
sales agent from whom you purchased the tool or
an authorized dealer.
Various errors are indicated by LED with this
machine in which the contents of error can be
identified by the color of LED.
Refer to “4-4 Various Safety Functions and
Error Detection Functions” for details including
countermeasures for various errors.
9 MAINTENANCE AND INSPECTION
WARNING
●When performing maintenance or inspection work,
turn the magnet switch off and remove the battery
pack from the machine. Furthermore, unplug the
power supply plug of the charger from the electric
outlet.
●Periodically check for looseness of screws
fastened at each part. Tighten the screw if it is
loose.
●After work, store at a dry area where the
temperature is less than 50°C and is out of reach
of children.
●After work, do not store at an area where volatile
that has possibility of ignition or explosion is kept.
●Do not put conductive items such as chips, nails
and copper wires in the storage case.
●Attach a terminal cover to the battery pack when
storing.
9-1 Greasing of sliding surfaces
From time to time, the sliding surfaces between the
body and the Slide Board should be greased.
9-2 Loose Slide Board adjustment
●When adjusting looseness of the slide board,
check that the slide board is located at the slide
board adjustment screw position before
tightening.
Any looseness between the body and the Slide
Board will adversely affect drilling precision, leading
to premature wear on the cutter. When looseness is
encountered, eliminate it by uniformly re-tightening
the four Slide Board adjustment screws on the
lateral side of the body to the extent that the Drill
Motor will not fall under its dead weight. The screws
are designed to work as a double-lock, so they
should be securely tightened by turning the nuts.
9-3 Sharpening of Pilot Pin tip
If the Pilot Pin tip is dull, the pin will not be able to fit
itself into the punching hole, causing poor drilling
precision. It should be inspected from time to time,
and , if the Pilot Pin tip is found to be dull, sharpen the
tip or replace with a new one. Exercise caution during
the sharpening operation as any rough grinding
softens the tip due to annealing, even to the point of
disabling it in some cases. (Fig. 34)
Pilot Pin
Sharpen
the tip
Optimal angle 70°
(Fig. 34)
9-4 Loosen a tight Pilot Pin
When the cutter needs to be replaced, pull out and
change the Pilot Pin which acts as a guide. However, if
Metal chips are caught between the cutter and the pin,
the pin may be difficult to be pulled out. Tap the end of
the pin gently with a wooden mallet as you pull it out.
(Fig. 35)
Pilot Pin
Cutter
Metal chips
Wooden mallet
(Fig. 35)
9-5 Cutter grinding
When the cutter needs re-grinding, consult the sales
agent from whom you purchased the tool or an authorized
dealer.
9-6 Inspection and Replacement of Carbon Brush
Periodically inspect the abrasion condition of the
carbon brush.
Replace the carbon brush with a new carbon brush
when the remaining length of the carbon brush is 8 to
9 mm since the rectification will deteriorate and may
cause machine failure when left unreplaced. (Fig. 36)
15.+/2+..]AJ?+050.]C,glbb/7 /2,7,/.28//8.7NK