Trotec PMTS 01-12V User manual
TRT-BA-PMTS01-12V-TC220111TTRT01-001-EN
PMTS 01-12V
EN
ORIGINAL INSTRUCTIONS
CORDLESS GRINDER
2 EN
cordless grinder PMTS 01-12V
Table of contents
Notes regarding the instructions ..........................................2
Safety .....................................................................................3
Information about the device................................................9
Transport and storage.........................................................11
Start-up................................................................................12
Operation .............................................................................17
Available accessories..........................................................19
Errors and faults..................................................................19
Maintenance ........................................................................20
Disposal ...............................................................................21
Declaration of conformity ...................................................21
Notes regarding the instructions
Symbols
Warning of electrical voltage
This symbol indicates dangers to the life and health of
persons due to electrical voltage.
Warning of explosive substances
This symbol indicates dangers to the life and health of
persons due to potentially explosive substances.
Warning of hot surface
This symbol indicates dangers to the life and health of
persons due to hot surface.
Warning of sharp object
This symbol indicates dangers to the life and health of
persons due to pointed objects.
Warning
This signal word indicates a hazard with an average
risk level which, if not avoided, can result in serious
injury or death.
Caution
This signal word indicates a hazard with a low risk
level which, if not avoided, can result in minor or
moderate injury.
Note
This signal word indicates important information (e.g.
material damage), but does not indicate hazards.
Info
Information marked with this symbol helps you to carry
out your tasks quickly and safely.
Follow the manual
Information marked with this symbol indicates that the
instructions must be observed.
Wear safety glasses
Information marked with this symbol indicates that you
should wear eye protection.
Wear a protective mask
Information marked with this symbol indicates that you
should wear a protective mask.
Wear protective clothing
Information marked with this symbol indicates that you
should wear protective clothing.
Wear protective gloves
Information marked with this symbol indicates that you
should wear protective gloves.
You can download the current version of the instructions via the
following link:
PMTS 01-12V
https://hub.trotec.com/?id=45866
EN 3
cordless grinder PMTS 01-12V
Safety
General Power Tool Safety Warnings
Warning
Read all safety warnings and all instructions.
Failure to follow all instructions listed below 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.
General Power Tool Safety Warnings– Work area
safety
•Keep work area clean and well lit. Clutter or dark areas
invite accidents.
•Do not operate power tools in explosive atmosphere,
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.
General Power Tool Safety Warnings– Electrical
safety
•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.
•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.
•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.
•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.
•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.
General Power Tool Safety Warnings– 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 protective mask,
non-skid safety shoes, hard hat, hearing protection or
tight-fitting protective clothing used for appropriate
conditions will reduce personal injuries.
•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.
•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.
•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.
•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 EN
cordless grinder PMTS 01-12V
General Power Tool Safety Warnings– 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 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.
•Store idle power tools out of the reach of children and
Do not allow persons unfamiliar with the device or
these instructions to operate the device. 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. Take 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.
Use and handling of the battery tool
•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 designed 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.
General Power Tool Safety Warnings– 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.
General Power Tool Safety Warnings– Charger use
and care
•This charger can be used by children aged
from8years and above and persons with reduced
physical, sensory or mental capabilities or lack of
experience and knowledge if they have been given
supervision or instruction concerning use of the
appliance in a safe way and understand the hazards
involved. Children shall not play with the appliance.
Cleaning and user maintenance shall not be made by
children without supervision.
•Never insert non-rechargeable batteries into the
charger. A charger that is suitable for one type of battery
pack may create a risk of fire and explosion, when used
with another battery pack or non-rechargeable batteries.
• Only use the charger “PMTS01-12VAC” for charging the
Li-Ion battery “PMTS 01-12VDC” with a capacity of2.0Ah
(3rechargeable cells). The battery voltage must match the
battery charging voltage of the charger.
Safety Warnings Common for Grinding, Sanding,
Wire Brushing, Polishing or Abrasive Cutting-Off
Operations
•This power tool is intended to function as a grinder,
sander, wire brush, polisher or cut-off tool. Read all
safety warnings, instructions, illustrations and
specifications provided with this power tool. Failure to
follow all instructions listed below may result in electric
shock, fire and/ or serious injury.
•Do not use accessories which are not specifically
designed and recommended by the tool manufacturer.
Just because the accessory can be attached to your power
tool, it does not assure safe operation.
•The rated speed of the accessory must be at least
equal to the maximum speed marked on the power
tool. Accessories running faster than their rated speed can
break and fly apart.
EN 5
cordless grinder PMTS 01-12V
•The outside diameter and the thickness of your
accessory must be within the capacity rating of your
power tool. Incorrectly sized accessories cannot be
adequately guarded or controlled.
•Abrasive wheels, abrasive rolls or other accessories
must fit exactly on the grinder spindle or collet chuck
of your power tool. Accessories that do not precisely
match the holder of the power tool will run out of balance,
vibrate excessively and may cause loss of control.
•Wheels, abrasive cylinders, cutting tools or other
accessories mounted on a mandrel must be fully
inserted into the collet chuck or jaw chuck. The
“protrusion” or the exposed part of the mandrel
between the abrasive accessory and the collet chuck
or jaw chuck must be minimal. If the mandrel is not
sufficiently tensioned or the abrasive accessory protrudes
too far forward, the accessory may become loose and be
ejected at high speed.
•Do not use a damaged accessory. Before each use
inspect the accessory such as abrasive wheels for
chips and cracks, abrasive rolls for cracks, tear or
excess wear, wire brushes for loose or cracked wires.
If power tool or accessory is dropped, inspect for
damage or install an undamaged accessory. After
inspecting and installing an accessory, position
yourself and bystanders away from the plane of the
rotating accessory and run the power tool at maximum
no-load speed for one minute. Damaged accessories will
normally break apart during this test time.
•Wear personal protective equipment. Depending on
application, use face shield, safety goggles or safety
glasses. As appropriate, wear dust mask, hearing
protectors, gloves and workshop apron capable of
stopping small abrasive or workpiece fragments. The
eye protection must be capable of stopping flying debris
generated by various operations. The dust mask or
respirator must be capable of filtrating particles generated
by your operation. Prolonged exposure to high intensity
noise may cause hearing loss.
•Keep bystanders a safe distance away from work area.
Anyone entering the work area must wear personal
protective equipment. Fragments of workpiece or of a
broken accessory may fly away and cause injury beyond
immediate area of operation.
•Only hold the power tool by its insulated gripping
surfaces when performing an operation where the
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.
•Always hold onto the power tool firmly when starting
it. When running up to full speed, the reaction torque of
the motor can cause the power tool to twist.
•If possible, use clamps to hold the workpiece in place.
Never hold a small workpiece in one hand and the
power tool in the other while using it. Tightly clamping
small workpieces allows you to have both hands free and
to have better control of the power tool. When removing
round workpieces such as wooden dowels, bar stock or
pipes, they tend to roll away, causing the accessory to jam
and be catapulted towards you.
•Never lay the power tool down until the accessory has
come to a complete stop. The spinning accessory may
grab the surface and pull the power tool out of your
control.
•After changing accessories or making adjustments to
the device, firmly tighten the collet chuck nut, the jaw
chuck or other fixing elements. Loose fixing elements
can shift unexpectedly and cause loss of control; and
rotating components that are not attached will be forcefully
ejected.
•Do not run the power tool while carrying it at your
side. Accidental contact with the spinning accessory could
snag your clothing, pulling the accessory into your body.
•Regularly clean the power tool’s air vents. The motor’s
fan will draw the dust inside the housing and excessive
accumulation of powdered metal may cause electrical
hazards.
•Do not operate the power tool near flammable
materials. Sparks could ignite these materials.
•Do not use accessories that require liquid coolants.
Using water or other liquid coolants may result in
electrocution or shock.
Kickback and Related Warnings
A kickback is a sudden reaction to a pinched or snagged
rotating wheel, abrasive wheel, abrasive belt, brush or any other
accessory. Pinching or jamming causes rapid stalling of the
rotating accessory. This will accelerate an uncontrolled power
tool towards the direction opposite of the accessory’s rotation.
For example, if an abrasive wheel is snagged or pinched by the
workpiece, the edge of the wheel that is entering into the pinch
point can dig into the surface of the material causing the wheel
to climb out or kick out. The wheel may either jump toward or
away from the operator, depending on direction of the wheel’s
movement at the point of pinching. Abrasive wheels may also
break under these conditions.
Kickback is the result of power tool misuse and/or incorrect
operating procedures or conditions. Kickback can be avoided by
taking proper precautions as given below.
6 EN
cordless grinder PMTS 01-12V
•Maintain a firm grip on the power tool and position
your body and arm to allow you to resist kickback
forces. The operator can control kickback forces, if proper
precautions are taken.
•Never place your hand near the rotating accessory.
Accessory may kickback over your hand.
•Use special care when working corners, sharp edges
etc. Avoid bouncing and snagging the accessory.
Corners, sharp edges or bouncing have a tendency to snag
the rotating accessory. The result would be a loss of
control or kickback.
•Do not attach a saw chain woodcarving blade or
toothed saw blade. Such blades create frequent kickback
and loss of control.
•Always move the accessory into the material in the
same direction in which the cutting edge leaves the
material (corresponds to the same direction in which
the chips are ejected). Guiding the power tool in the
wrong direction causes the cutting edge of the accessory
to climb out of the workpiece, which will pull the power
tool in that feed direction.
•Always clamp the workpiece firmly when using rotary
files, cutting wheels, high-speed milling tools or
carbide milling tools. If these accessories become only
slightly jammed in the groove, they will get caught and
may cause a kickback. If a cutting wheel gets caught, it
usually breaks. If rotary files, high-speed milling tools or
carbide milling tools get caught, the tool insert may be
ejected from the groove and cause loss of control of the
power tool.
Safety Warnings Specific for Grinding and Abrasive
Cutting-Off Operations
•Only use abrasives approved for your power tool and
for the recommended applications. Example: do not
grind with the side of cut-off wheel. Cutting discs are
designed for material removal using the edge of the disc.
Exerting force to the sides of these abrasives may break
them.
•For conical and straight abrasive pencils with a thread,
only use undamaged mandrels of the correct size and
length without an undercut on the shoulder. Suitable
mandrels reduce the risk of breakage.
•Do not "jam" the cut-off wheel or apply excessive
pressure. Do not attempt to make an excessive depth
of cut. Overstressing the wheel increases the loading and
susceptibility to twisting or binding of the wheel in the cut
and the possibility of kickback or wheel breakage.
•Do not position your hand in line with and behind the
rotating cutting wheel. When the wheel, at the point of
operation, is moving away from your hand, the possible
kickback may propel the spinning wheel and the power
tool directly at you.
•When wheel is binding or when interrupting a cut for
any reason, switch off the power tool and hold the
power tool motionless until the wheel comes to a
complete stop. Never attempt to remove the cut-off
wheel from the cut while the wheel is in motion
otherwise kickback may occur. Investigate and take
corrective action to eliminate the cause of wheel binding.
•Do not restart the cutting operation in the workpiece.
Let the wheel reach full speed and carefully re-enter
the cut. The wheel may bind, walk up or kickback if the
power tool is restarted in the workpiece.
•Support panels or any oversized workpiece to
minimize the risk of wheel pinching and kickback.
Large workpieces tend to sag under their own weight.
Supports must be placed under the workpiece near the line
of cut and near the edge of the workpiece on both sides of
the wheel.
•Use extra caution when making a pocket cut into
existing walls or other blind areas. The protruding wheel
may cut gas or water pipes, electrical wiring or objects
that can cause kickback.
Safety Warnings Specific for Wire Brushing
Operations
•Be aware that wire bristles are thrown by the brush
even during ordinary operation. Do not overstress the
wires by applying excessive load to the brush. The wire
bristles can easily penetrate light clothing and/or skin.
•Let brushes run at operating speed for at least one
minute before starting work. Make sure that during
this time no other person is standing in line with the
brush. During the start-up time, loose wire bristles may
fly.
•Direct the rotating wire brush away from yourself.
When working with these brushes, small particles and tiny
bits of wire may fly at high speed and penetrate the skin.
EN 7
cordless grinder PMTS 01-12V
Intended use
Only use the device PMTS 01-12V:
• Drilling into wood or metal
• Milling into wood or plastics
• For sawing and cutting
– Wood
– Plastics
– Non-ferrous metals
– Fixing elements
(e.g. screws, nails, clamps etc.)
• For sanding small, dry areas
• Engraving
– Metal
– Plastics
– Glass
– Ceramics
– Wood
– Leather
• Polishing
observing the technical data provided.
We recommend using the power tool with original Trotec
accessories.
Foreseeable misuse
Do not use the device for:
• cutting up tiles
• sawing large screws or stainless steel
• processing workpieces requiring a continuous water
supply
• drilling into concrete or natural stone
Only use the device in weatherproof surroundings.
Any other use than the one described in the chapter "Intended
use" is regarded as reasonably foreseeable misuse.
Personnel qualifications
People who use this device must:
• be aware of the dangers that occur when working with
electric devices in damp areas.
• have read and understood the instructions, especially the
Safety chapter.
Safety signs and labels on the battery and the charger
Note
Do not remove any safety signs, stickers or labels from
the device. Keep all safety signs, stickers and labels in
legible condition.
The following safety signs and labels are attached to the
battery:
Warning of explosion risk!
These symbols indicate the following:
Do not expose the battery pack or tool to fire or
excessive temperature! Do not let the battery come into
contact with water or fire! Avoid direct sunlight and
moisture. There is a risk of explosion!
Never charge the battery at ambient temperatures
below10°C or above40°C. Charging improperly or at
temperatures outsides the specified range may damage
the battery and increase the risk of fire.
Observe the correct disposal of the battery!
This symbol indicates the following:
Ensure that the battery is disposed of correctly and
never dispose of it in waste water or public waters.
The battery contains irritating, caustic and toxic
substances that pose significant risks to people and the
environment.
The following safety signs and labels are attached to the
charger:
This symbol indicates the following:
Read the instructions or operating manual before
charging the battery.
This symbol indicates the following:
Only use the charger for charging the battery in dry
interior spaces. Do not charge the device outdoors.
Personal protective equipment
Wear eye protection.
With it you protect your eyes from splintering, falling
and flying pieces which could cause injuries.
Wear a protective mask.
It saves you from inhaling harmful dusts generated
when processing workpieces.
Wear protective gloves.
They protect your hands from burns, crushing injuries
and skin abrasions.
Wear tight-fitting protective clothing.
This protects you from the draw-in and entanglement
hazard posed by rotating parts.
8 EN
cordless grinder PMTS 01-12V
Residual risks
Warning of electrical voltage
Electric shock from insufficient insulation.
Check the device for damages and proper functioning
before each use.
If you notice damages, no longer use the device.
Do not use the device when the device or your hands
are damp or wet!
Warning of electrical voltage
Work on the electrical components must only be
carried out by an authorised specialist company!
Warning of electrical voltage
Before any work on the device, remove the mains plug
from the mains socket and the battery from the device!
Hold onto the mains plug while pulling the power cable
out of the mains socket.
Warning of electrical voltage
There is a risk of a short-circuit due to liquids
penetrating the housing!
Do not immerse the device and the accessories in
water. Make sure that no water or other liquids can
enter the housing.
Warning of explosive substances
Do not expose the battery to temperatures above
45°C! Do not let the battery come into contact with
water or fire! Avoid direct sunlight and moisture. There
is a risk of explosion!
Warning of hot surface
The insertion tool might still be hot after the
application. Burn hazard when touching the insertion
tool.
Do not touch the insertion tool bare-handed!
Wear protective gloves!
Warning of sharp object
Parts of the saw blade are sharp. Risk of injuries if
handled without due care.
Wear protective gloves!
Warning
Toxic dusts!
The harmful / toxic dusts produced during operation
pose of risk to the health of the operator and persons
in the vicinity.
Wear eye protection and a dust mask!
Warning
Do not process materials containing asbestos.
Asbestos is considered carcinogenic.
Warning
Make sure not to hit power, gas or water lines when
working with a power tool.
If necessary, use a pipe detector to check the wall you
want to drill in or slit open.
Warning
Risk of injuries caused by flying parts or bursting tool
heads.
Warning
Dangers can occur at the device when it is used by
untrained people in an unprofessional or improper way!
Observe the personnel qualifications!
Warning
The device is not a toy and does not belong in the
hands of children.
Warning
Risk of suffocation!
Do not leave the packaging lying around. Children may
use it as a dangerous toy.
Caution
Vibration emissions can cause a health hazard if the
device is used for an extended period of time or if it is
not properly handled and maintained.
Caution
Keep a sufficient distance from heat sources.
Note
If you store or transport the device improperly, the
device may be damaged.
Note the information regarding transport and storage of
the device.
Behaviour in the event of an emergency/ emergency
stop function
Emergency stop:
Removing the battery results in the function of the device
stopping immediately. Leave the battery out in order to secure
the device against accidental switch-on.
Behaviour in the event of an emergency:
1. Switch the device off.
2. In the event of an emergency, remove the battery from the
device: Hold the release button of the battery and pull the
battery off the device as described in chapter "Removing
the battery".
3. Do not insert the battery if the device is defective.
EN 9
cordless grinder PMTS 01-12V
Information about the device
Device description
The cordless grinder PMTS 01-12V is a high-precision tool for
performing especially fine and detailed tasks in the fields of
drilling, milling, cutting, engraving or polishing. It is ideally
suited for tasks like for example: model construction and the
use in wood and metal processing or for polishing jewellery.
For material-compatible working, the rated speed can be
selected in seven stages within a range of 5,000rpm to
25,000rpm at the setting wheel.
The device is equipped with a battery level indication that allows
you to monitor the battery charging status during operation at
any time.
Device depiction
1
23
25
2
24
3
22
5 h
20
21
5
6
4
7
17
19
18
8
9
11
15
16
10
14
13
12
No. Designation
1Spindle lock
2Venting slots
3On/off switch
4Release button
5Battery
6Quick charger
7Wrench
8Cutting wheels
9Abrasive wheels
10 Engraving bits, diamond-tipped
11 Aluminium oxide grinding head (different types)
12 HSStwist drill bit set, 1mm to 3.2mm
13 Collet chuck set, 1mm to 3.2mm
14 Milling cutters (various shapes)
15 Mandrel for cutting discs/abrasive wheels
16 Mandrel for polishing attachments
17 Plastic brushes (various shapes)
18 Brass brush
19 Polishing attachments
20 Battery LED
red: battery charging
green: quick charger ready for operation
21 Power adapter
22 Tool holder with clamping nut
23 Battery holder
24 Battery level indication
25 Setting wheel for speed selection
10 EN
cordless grinder PMTS 01-12V
Scope of delivery
• 1x device PMTS 01-12V
• 1x wrench
• 4x abrasive wheel
• 16x cutting wheel
• 2x engraving bit diamond-tipped
• 5x aluminium oxide grinding head
• 1x collet chuck 1.0mm
• 1x collet chuck 1.6mm
• 1x collet chuck 2.0mm
• 1x collet chuck 2.4mm
• 1x collet chuck 3.2mm
• 2x HSStwist drill bit 1.0mm
• 1x HSStwist drill bit 1.6mm
• 1x HSStwist drill bit 2.0mm
• 1x HSStwist drill bit 2.4mm
• 1x HSStwist drill bit 3.2mm
• 3x milling cutter
• 2x mandrel for cutting/abrasive wheels
• 1x mandrel for polishing attachment
• 2x plastic brush
• 1x brass brush
• 3x polishing attachment
• 1x storage box
• 1x manual
Technical data
Parameter Value
Model PMTS01-12V
Nominal voltage 12V
Rated speed 5,000– 25,000rpm
Threaded rod M8
Max. rated capacity of the accessories
Working head diameter 32 mm
Drill bits 3.2 mm
Drill chuck 3.2 mm
Polishing discs 25 mm
Cutting wheels 24 mm
Abrasive wheels 20 mm
Brushes 22 mm
Weight 420g
Battery PMTS 01-12VDC
Type Li-ion
Nominal voltage 12V
Nominal capacity 2Ah
Rechargeable cells 3
Capacity 24Wh
Power adapter and quick
charger
PMTS 01-12VAC
Power adapter SMPS Switching Power supply
Transformator Safety transformer
Input
Nominal voltage 100– 240V/ 50Hz
Power input 30W
Output
Nominal voltage 13V
Charging current 0.45A
Fusing 1A (slow-blowing)
Charging time 5h
Protection class II(double insulation)/
Sound values according to EN60745
Sound pressure level 67 dB(A)
Sound power level 78 dB(A)
Uncertainty K 3 dB
Vibration information according to EN60745
Vibration emission valueah0.916 m/s²
UncertaintyK 1.5 m/s²
Table of contents
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