Vessel GT-ASC5 User manual
For Safe Use
0
For Safe Use
1
Thank you very much for having purchased the "VESSEL Air Scraper
GT-ASC5.”
Please read this manual carefully and understand its contents for the safe
and correct use of the air tool.
Warning: Read these instructions carefully before operating,
maintaining or servicing this tool.
■The following icons represent the degree of danger that can be induced by
user’s action or environment. Please observe all the instructions presented
in this manual as they are important for personal and public safety.
Warning
Indicates possibility of serious or fatal injuries when
instructions are not followed.
Caution
Indicates possibility of injuries or property damage when
instructions are not followed.
※Depending on circumstances, failure to follow the instructions
given in the "Caution" section could lead to serious
consequences.
■Please keep this manual for your ready reference.
■In case this manual or any of the warning labels attached to the unit are lost
or damaged, contact us or the local distributor for replacement.
■Please make sure this manual be kept with the unit when it is handed over
or lent out to a third party.
If you have any inquiries about this product or manual, please contact us
or your local distributor.
Warning
Please read this manual carefully and understand the
contents fully before use.
Warning
■Compressed air management
●Specified air pressure should be applied.
Excessive air pressure may lead to serious accidents or
property damages. Install proper equipment including a
pressure gauge and a reduction valve in order to keep the
dynamic pressure at the tool end within the specified range.
●Only compressed air should be applied.
For Safe Use
2
The air impact wrench is a tool driven by normal
compressed air. There will be a risk of explosion if other
high-pressure gases like oxygen, acetylene, and propane
are used for the tool.
●Choose the appropriate air hose.
Use oil- and abrasion-resistant air hoses for the required air
pressure and of the recommended inner diameter. Avoid
using deteriorated or excessively long hoses.
●Prevent air leakage.
Make sure that air plugs be firmly attached to the air hose. If
the air hose comes off due to loose connection, it will
bounce around by the force of compressed air and may
cause personal injuries or property damages.
Warning
■Work environment
●Keep the work area clean and bright.
Dark or cluttered work environment leads to accidents.
Keep the area tidy and well-lit.
●Do not use the air tool in explosive atmosphere.
This unit may create sparks, which may cause explosion.
Warning
■Work clothes
●Wear appropriate work clothes.
Do not wear baggy clothes, accessories, etc, which might
be caught in revolving parts. Long hair should be tucked
under a cap to keep it away from the tool.
●Wear protective gears.
Wear protective gears suitable for the task, including a
helmet, protective goggles, earplugs, a dust mask,
anti-vibration gloves and safety shoes, etc.
Warning
■General precautions
●Handle the unit with care.
Do not throw or drop the unit as it will damage the parts and
lead to accidents and malfunction.
●Beware of moving parts.
Keep your hands and cloth away from the moving parts as
they may be caught in them.
For Safe Use
3
●Keep a good posture while working.
Keep a good posture and hold the tool firmly in case of an
unexpected situation.
●Avoid accidental start-up.
Make sure the trigger is released before connecting the air
hose to the unit. Be careful not to press the trigger when
carrying the air tool.
●Keep the tool away from electricity.
The air tool is not insulated against electricity.
●Stop using the tool if you notice any abnormalities.
If you notice any abnormalities, stop using the tool
immediately and contact us or your local distributor for
maintenance, inspection, and repair.
●Fix the work piece properly.
Use vices or clamps to secure the work piece to a stable
platform. These tools will make cutting tasks safer than
holding the work piece by hand and will allow you to use
both hands to operate the unit.
Unstable fixing will cause early wear and damage of the unit
and scraper.
●Use the cutting edge of the scraper properly.
Do not force the scraper tip vertically to work piece. Also, do
not squeeze or bend the scraper as it may lead to breakage
of the scraper and personal injuries.
●Use appropriate scrapers.
Use scrapers manufactured by VESSEL. Read the
instruction manual and understand the contents before
installing a scraper.
Warning
■Miscellaneous
●Use the tool only for its intended applications.
It may lead to an unexpected accident if the tool is used for
purposes other than those specified in the manual.
●Do not attempt any modification.
Do not modify the unit. Any modification will void the
For Safe Use
4
warranty and may cause a hazardous situation.
●Do not remove any parts.
Also, do not use the tool if any of its parts or screws has
been removed or missing. It may result in a hazardous
situation.
●Shut off the air supply and detach the air hose from
the tool;
・when the tool is not in use
・when the tool is kept in storage
・when maintenance is performed
・when the tool tip (bits / sockets) is replaced
・when there is any sign of danger or malfunction
Caution
■Basic precautions for operating air tools
●Pay attention.
Stay alert while using the air tool and do not act
thoughtlessly. Also, avoid using the tool when you are tired
or under the influence of drug, alcohol, or medication.
●Keep bystanders away.
Do not let bystanders get close to your operation.
Especially, children should be kept away.
●Do not overload the air tool.
If the tool is operated beyond the specified output range, it
will damage the tool and lead to malfunction.
●Beware of the exhaust port.
Direct the exhaust air away from your eyes and ears.
Otherwise, it can cause accidents or diseases as it contains
oil and it may blow grit or other debris in your face.
●Handle the tool with care.
Do not throw or drop the tool. It may lead to damage or
malfunction if it is handled roughly or forcefully.
●Keep bystanders away.
Do not let bystanders get close to your operation.
Especially, children should be kept away.
●Do not abuse the air hose.
Do not carry, raise or lower the tool by the air hose.
For Safe Use
5
Damaged hoses increase the risk of accidents.
●Do not drop the tool from a high place.
Equipment like a safety strap should be used to prevent the
tool from falling when working at high places.
●Store the tool in a safe place.
If the tool is not to be used for a period of time, conduct
maintenance and keep it in a safe, dry place. It should be
kept out of the reach of children.
●Be aware of laws.
There are laws and regulations that may regulate or limit the
use of this product. Please make sure that the use of this
product does not violate any laws and regulations.
●Take breaks.
Continuous work without taking appropriate breaks could
lead to illness, take breaks as required. If you feel
abnormalities, such as pain, immediately stop using the tool
and consult a physician.
Caution ■Maintenance, inspections and repairs
●Check before use.
Make sure the unit has no loose screws/bolts and fittings
and no damaged parts. If the unit is operated despite such
problems, it could lead to a hazardous situation as well as
decrease the performance.
●Conduct inspection and maintenance regularly.
Regular inspection and maintenance are necessary for safe
and efficient performance of the tool.
●Please contact us or the local distributor for repair or
parts replacement.
Never disassemble the unit or replace parts by yourself.
Warranty on any of our products shall be void if defect is
caused by abuse, neglect, improper repair, improper fit, or
any use unintended by the manufacturer.
For Safe Use
6
Prior to Use
・Open the package and check if all the parts are inside without shortage
and damage.
・Be sure to read and understand this manual thoroughly before handling
this product.
・Keep the instruction manual in hand and refer to it whenever needed.
・Store the instruction manual in a safe place. If the manual is lost or
damaged, contact us or your local distributor for a new copy.
Applications
・This product is generated by compressed air and has been designed to
scrape integrated circuit chips from circuit boards, and mortar or
decorating paint on walls.
This air tool should not be operated;
* if the application is outside the specified operating range.
* if any part of it has been modified or altered.
* if normal compressed air is not available. Never use other power
sources, such as oxygen, acetylene, and propane, etc.
*near water or in ignitable environments.
*in any way unintended by the manufacturer.
Icons for safety instructions
This unit may
cause vibration.
Wear
protective
goggles.
Wear earplugs.
Read the manual
before use.
How to Use
7
PIPING MODEL
・For operating the tool, make sure to follow the procedures described
in this instruction manual.
・Do not use the tool:
* if the scraper been mounted properly.
* if the any accessories have not been attached properly.
* if the work environment does not allow you to keep a stable posture,
secure a firm grip on the tool or to operate the tool properly.
* if the floor is slippery or not level.
* if the attached blade or other accessories are not intended for the use
or application.
* if it has been modified or has any parts missing or lost.
* if the input air pressure is higher than the specified value.
* if more than the specified working torque is required.
・When the tool is not in use or left unattended, shut off the air supply
and detach the air hose from it.
How to Use
8
Preparations before use
●Check the air pressure
The specified air pressure for this air tool is 0.6 MPa. If the input air
pressure surpasses this specified level, it will cause damage on the unit
or individual parts.
●Remove the drain
When moisture or impurities like rust in the pipe get into the mechanism,
it may cause malfunction. Remove accumulated drain in the compressor
before use. To secure dry air supply, install an air filter in order to prevent
moisture and any impurities.
●Use an appropriate air hoses
Please refer to Specifications for choosing an air hose of the appropriate
size for the applied air supply. If the internal diameter of the air hose is
too small, sufficient power may not be obtained as air pressure cannot
increase efficiently. It also happens when the hose is too long.
●Install the plug
Use a spanner of No.17 to holdAir Inlet Bushing
and fasten the plug.
●Air coupling
When using the air coupling included in the package, purchase a
compatible connector. When connecting a hose directly to this product,
purchase a hose connection coupling. In both cases, check the size of
the connected hoses.
●Before the first operation after purchase
Attach the scraper before connecting the air hose to the unit. When this
air tool has been newly installed or the air hose has been replaced, blow
and clean the inside of the hose and piping. Then, idle the device for a
few seconds because lubricant within the mechanism has to be blasted
out with exhaust air.
How to Use
9
●Lubrication
Lubricate the unit regularly for smooth operation of the motor part and to
remove impurities. If you install a lubricator, it will lubricate the tool
automatically. Or, you can lubricate manually from the air supply port
before or after use. (ISO VG10 or equivalent hydraulic oil.)
●Handling of the unit
Do not drop the unit or subject it to shock as it may cause damage. Also
it must be kept away from any organic solvents as it may cause
deformation.
●In cold areas
Moisture inside the tool may freeze in winter. Be sure to lubricate the tool
to remove the moisture after use.
・Make sure to mount the scraper properly before starting it.
If the unit is started without a scraper properly installed, parts mounted at
the tip might fly apart and lead to personal injuries or product breakage.
How to use the tool
●How to install a blade
Make sure to disconnect the air input by detaching the air hose before
installing or removing the scraper.
Loosen the hexagonal hole screw with a 3mm-hex key wrench and insert a
scraper to the end. Then put back the screw and fasten it firmly.
Do not use any other screws than this hexagonal hollow screw (M6×6 flat
point). Do not operate the tool when its hex hollow screw is loosened.
All the tools used for replacement of a scraper must be removed from the
unit before operating it.
Hex Hollow Screw
(M6×6 Flat Point)
How to use the tool
10
●How to start and stop the unit
1. Connecttheaircoupling.
2. Start feedingcompressed airtothe unit.
3. Flipupthe safety stopperand pullthethrottlelevertostarttheunit.
4. If the throttle lever is released, its safety mechanism will stop the operation
automatically andlockthetrigger.
●AppropriateAngle
GT-ASC5 is an air scraper and it is not an air hammer. Therefore, use the tool
under 45-degree angle against the object. Recommended angle is under
20-degree.
How to use the tool
11
●How to replace theScraper
Usescrapers manufacturedbyVESSEL.
Choose appropriate scrapers for each type of work piece. Do not use worn
scrapers as they lower the performance and may break and cause accidents and
injuries.
●Ifthe engine hasstalled
Push the restart button if theengine has stalled and cannot be restarted by pulling
the throttletrigger.
Abouthandling
*Donottouchtheedgeofscraper.It isverydangerousandmayleadtoinjury.
*Donotidlethe toolwithoutloadwithascraper mounted.
*Makesure toturnofftheair,whenworkis finishedas wellaswhen the bladeor
the parts needto bereplaced.
* Do not direct the exhaust air towards people or fire. The exhaust is dangerous
as itcontains oil.
*Do not touch theblade andwork pieceduringand after operation becausethey
becomeveryhotdueto heatcaused by friction.
*Whenyou notice anyabnormalities,stopworking andturnofftheair supply.
Maintenance/Repairs
12
・We recommend periodic inspections for safe, worry-free use. If
inspections are neglected, it may affect the performance, lifespan and
safety of the product.
・Inspection (maintenance) should be conducted only by those who
carefully read and fully understood the instruction manual for this product.
・Contact the local distributor for repairs. Do not repair the unit by yourself.
Points of regular maintenance
When conducting maintenance, be sure to remove the hose coupling and
do not supply any air.
●Scraper
Scraper wear…Lower cutting performance and it also becomes a cause of
breakage. Please replace it with a new Scraper.
Deformation or crack…Deformed or cracked blades might break suddenly
and . Stop using such damaged blades and
replace them.
●Hose couplings
Loose screws…Tighten them since it is dangerous if the hose comes off.
Worn out……… Replace with new parts since the coupling may come off
if the connection is loose.
●Throttle lever
Return condition…Confirm whether the lever returns properly. It is very
dangerous to use the tool continuously if the lever does
not return properly because the tool will start suddenly
after connected. If the lever does not return, please
request repairs.
●Bolts for each part
Loose bolts …… It may lead to air leaks and malfunctions. Please
re-tighten the bolts.
●Surface damage
Cracks …………. Stop using and request repairs.
Troubleshooting
13
Troubleshooting
Trouble
Cause
Action
1. Scraper dose not cut
properly or efficiently.
Air is not provided.
Turn on the air.
The hose is twisted.
Straighten the hose.
Air pressure is too low or high.
Adjust air pressure.
Piston is worn or rusted / foreign
object within the Piston Cylinder.
Lubricate the unit /
Request for Overhaul.
Breakage of Front Spring.
Part replacement.
Breakage of Rear Spring.
Part replacement.
Damaged Scraper.
Scraper replacement.
Misalignment of Piston.
Push Restart button.
2. Scraper cannot be
installed properly.
The retainer screw has not been
fastened properly.
Tighten the retainer
screw properly.
Foreign object, such as debris, is
preventing the proper installation.
Clean Holder Cap.
Work piece is not kept firmly.
Use proper tool to hold
the work piece.
Air pressure is too high.
Adjust the air pressure.
3.Air leakage.
Breakage / malfunction of air valve.
Part replacement.
Request repairs immediately when the tool is in a defective and abnormal
condition, etc., since it could lead to a product malfunction and accident.
Please contact our distributor for repairs.
Storage
Please store the air tool in a safe location and be aware of dust, humidity,
dew and freezing.
Exploded diagram drawing & Parts list
14
Specifications
Specification
Unit
GT-ASC5
Stroke
mm
5
Weight
g
810
OverallLength
mm
195.5
BladeSpeed
c.p.m
7000
WorkingAir Pressure
MPa
0.6
AirConsumption
㎥/min
0.28
Air Compressor
kw
2.2 or bigger
AirHoseInnerDia.
mm
6.35
Air Coupling
Rc
1/4
Accessories
●VESSELAirCoupling （BPB-2）
●HexKeyWrench（3mmHEX）
1PC
1PC
Optional items
Product #
Width of Blade (mm)
Shaft Diam. (mm)
Applications
ASC-25-8
25
8
IC Chips,
ASC-50-8
50
8
IC Chips, Walls
Description/Dimensions
Exploded diagram drawing & Parts list
15
Exploded diagram drawing & Parts list
16
Part
No.
EDPNo.
Description
Quantity
Required
perunit
1
HeadHolder
1
2
HexCapBoltM3x12
4
3
HolderCapComplete
1
〈4〉
ScraperHolder(IncorporatedinNo.3)
1
5
HexHollowScrewM6x6(FlatPoint)
1
6
FrontSpring
1
7
FrontPiston
1
8
O-RingAS568A204, Piston
2
9
Piston,Main
1
10
PistonRod
1
11
RearSpring
1
12
CushionGrip
1
〈13〉
Cylinder (Incorporatedin No.14)
1
14
Housing,Main
1
15
SilencerCaseComplete
1
16
O-RingN20,Silencer
1
〈17〉
Endcap(Incorporated inNo.14)
1
18
Throttle Lever Complete
1
19
PinSP3x25, Throttle Lever
1
20
Throttle
1
21
O-RingN3,Throttle
1
〈22〉
ValveBase (Incorporatedin No.14)
1
23
ValveThrottle
1
24
Spring,Throttle
1
25
O-RingN14,AirInletBushing
1
26
Bushing,AirInlet
1
Parts with < > marked shall not be supplied individually even if ordered since it is an integrated
component.
●Thecontentsofthismanualaresubjecttobechangedwithoutnotice.
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