YATO YT-09739 Air Sander User Manual

YATO YT-09739 Air Sander

CHARACTERISTIC OF THE TOOL

The pneumatic eccentric grinder is a tool which uses compressed air under appropriate pressure to operate. The grinding blade is equipped with a Velcro- type fastener that allows the attachment of paper or abrasive cloth discs of different grain sizes and applications. The grinder is mainly used in painting works related to preparation of surfaces for subsequent stages of varnishing. Proper, reliable and safe operation of the tool depends on appropriate use, that is why you should:
read and keep the entire instruction manual before the first use of the tool.
The supplier shall not be held liable for any damage or injury resulting from improper use of the tool, failure to observe the safety regulations and recommendations of this manual. Use of the tool for purposes other than those for which it was intended shall cause the loss of the user’s rights to the warranty, as well as under inconsistencies with the agreement.

ACCESSORIES
The grinder is equipped with a connector to connect to the pneumatic system. The grinder is fitted with 150 mm diameter wheel.

TECHNICAL DATA

GENERAL SAFETY CONDITIONS

WARNING! During the tool operation you should always adhere to the fundamental principles of security including the following guidelines, in order to reduce the risk of fire, electric shock, and avoid injuries.
Before proceeding to the use of this tool you should read the whole instruction and keep it.

ATTENTION! Read all the following guidelines. Failure to comply with them may lead to electric shock, fire, or damage to the body. The concept of a “pneumatic tool”, which is used in the instructions refers to all tools driven by compressed air stream under proper pressure.
FOLLOW THE GUIDELINES BELOW

General safety rules
Prior to installation, operation, repair, maintenance and modification of accessories or, in the case of work near pneumatic tool, because of the many risks, you should read and understand the safety instructions. Lack of implementation of these activities can result in serious injury. Installation, regulation and assembly of pneumatic tools can be performed only by qualified and trained personnel. Do not modify the pneumatic tool. Modifications may reduce its efficiency and safety level and increase the risk for the tool operator. Do not throw away the safety instructions, they must be passed to the tool operator. Do not use the pneumatic tool, if it is damaged. The tool should be periodically inspected for visibility of data, which is required by the standard ISO 11148. The employer / user should contact the manufacturer in order to exchange plate every time when it is necessary.

The risks associated with entanglement
The risks associated with entanglement may cause choking, scalping and / or injury when loose clothing, jewelry, hair or gloves are not kept away from tool and accessories.

The risks associated with work
The use of tool can put hands operator risks, such as: crushing, impact, cutting, abrasion and heat. You should wear appropriate gloves to protect your hands. The operator and maintenance staff should be able to cope physically with the quantity, weight, and power tool. Handle the tool correctly. Maintain readiness to stand up to normal or unexpected movement and always at keep ready both hands. Maintain the balance to ensure the safety of the feet. You release the pressure on the starting device and in the case of interruption in energy supply. Only use lubrication agents, which are recommended by the manufacturer. Wear safety glasses, it recommended to use tight gloves and protective clothing. Check the polishing wheel before each use.Do not use cracked or broken discs or discs that have been dropped. Avoid direct contact with moving the polishing wheel to prevent pinching or cutting hands or other body parts. Use tight gloves to protect your hands. Never operate the tool if abrasive agent has not been applied on the processed material. When working on plastic or non-conductive components, there is a risk of electrostatic discharge. Polishing or grinding may cause dust and fumes that can create an explo-sive atmosphere. Always use the system to absorb or to discharge the dust which is appropriate to the processed material. Avoid direct contact with the implanted tool during and after work, it can be hot. You should use protective glasses, it is recom-mended to use tight gloves and protective gear.

The risks associated with repetitive movements
During the use of pneumatic tool for work based on repetition of movements the operator is exposed to experience discomfort of hands, arms, shoulders, neck, or other parts of the body. In the case of use of pneumatic tool the operator should adopt a comfortable posture which is ensuring the competent foot position and avoid strange or unbalanced postures. The operator should change the posture during long work, this will help to prevent discomfort and fatigue. If the operator is experiencing symptoms such as: persistent or recurring discomfort, pain, pulsating pain, tingling, numbness, burning, or stiffness, he/she should not ignore them, and inform about them the employer and consult a doctor.
The risks associated with accessories
Disconnect the tool from power source before changing implanted tool or accessory. Avoid direct contact with the inserted tool during and after work because it may be hot or sharp. Use accessories and consumables only in sizes and types, which are recommended by the manufacturer. Do not use accessories of any other type, or other size. Do not use grinding wheels for grinding or cutting. Check that the maximum speed of the inserted tool (flap discs, abrasive belts, fiber discs, polishing wheels) is greater than the rated speed grinding or polishing machine. Self-mounted polishing discs should be mounted concentrically on the polishing wheel.

Hazards of the workplace
Slips, trips and falls are the main causes of injuries. Beware of slippery surfaces caused by use of tool and risks caused by air installation. Proceed carefully in an unknown environment. There may be hidden dangers, such as electricity or other utility lines. Pneumatic tool is not intended for use in the areas endangered by explosion and it is not insulated from contact with the electricity. Make sure that there are no electrical cables, gas pipes, etc. which may cause hazard in case of using the tool.

The risks associated with fumes and dust
Dust and fumes generated by using pneumatic tool may cause bad health (for example, cancer, birth defects, asthma and / or der-matitis), there are necessary: risk assessment and implementation of appropriate control measures in relation to these risks. The risk assessment should include the impact of dust created by using the tool and the possibility of excitation of existing dust. The air outlet must be directed to minimize excitation of dust in dusty environment. Where there are the dusts or fumes, the priority should be to control their emission sources. All the integrated functions and equipment for collection, extraction or reduce dust or smoke should be properly operated and maintained in accordance with manufacturer’s recommendations. Use the respiratory protection in accordance with the instructions of the employer and in accordance with the requirements of hygiene and safety. Operation and maintenance should be carried out according to pneumatic tool instructions, in order to minimize the emissions of fumes and dust. You should select, maintain and exchange implanted tools by instruction guidelines in order to prevent increase of fumes and dust.

Noise hazard
Exposure to high levels of noise can result in permanent and irreversible hearing loss and other problems, such as tinnitus (ring-ing, buzzing, whistling or humming in ears). It is necessary to perform a risk assessment and implementation of appropriate control measures for these risks. Appropriate control actions in order to reduce the risk may include activities such as: the damping material to prevent „ringing “of the workpiece, use of hearing protection equipment in accordance with the instructions of the employer and in accordance with the requirements of hygiene and safety. Operation and maintenance of pneumatic tool should be carried out according to the instructions. This will allow to avoid an unnecessary increase of noise level. If the tool has pneumatic silencer, always be sure, that it is correctly installed during use of the tool. Select, maintain and replace worn tool which are implanted according to the instructions, this will allow to avoid unnecessary increase in noise.

Vibration risks
exposure to vibration may cause permanent nerve damage and blood supply to hands and arms. Keep hands away from screw-drivers sockets. You should wear warm clothes during work at low temperatures and keep your hands warm and dry. If you experience numbness, tingling, pain, or skin whitening in the fingers and hands, you should stop the use of pneumatic tool and then inform the employer and consult a doctor. Service and maintain the pneumatic tool according to instructions will allow to avoid unnecessary increase in the level of vibration. Keep the tool lightly, but securely, taking into account the required reaction forces, because the threat from vibration is generally larger, when the grip force is stronger.

Additional safety instructions for pneumatic tool

Air under pressure may cause serious injuries

• always cut off the air supply, drain hose of air pressure and disconnect the tool from the air supply, when: it is not used, before the exchange of accessories or before the repairs;

• you should never direct air stream towards yourself or anyone else.
  A stroke by the hose can cause serious injuries. You should always check for damaged or loose hoses and couplings. Cold air should be directed out of the hands. Every time when the universal screwed connections are used (claw connection) you should use protective mandrels and connectors, which are protecting against possible damage of connections between hoses and between the hose and tool. Do not exceed the maximum air pressure required for the tool.

• Never transport the tool by holding its hose.

OPERATING CONDITIONS

• Make sure that the compressed air source can generate appropriate working pressure and that it ensures the required air flow. In the case of excessive air pressure supply you should use reducer with safety valve. Pneumatic tool should be fed by the system of filter and lubricator. It will provide, at the same time, purity and air lubrication by oil. Status of filter and lubricator should be checked before each use and possibly clear the filter or complement deficiency of oil in the lubricator. This will ensure proper exploitation tool and will extend its life span.
• Do not use tools and grinding wheels, which are designed for cutting.
• Do not use grinding wheels other than those, which are indicated in the technical specifications.
• Make sure that the maximum rotational speed of the disc is higher than the speed of the grinder.
• Semi-mounted sanding disks should be placed concentrically on the pillow.
• Wear safety goggles during the work, it is also recommended to use gloves and protective clothing.
• During some operations may arise poisonous or combustible dusts and fumes. Work in a well ventilated area and use personal protection equipment.

TOOL USE

Before each use of the tool, make sure that no parts of the pneumatic system are damaged. If you notice damage, immediately replace the components with new, undamaged ones.
Dry condensed moisture inside the tool, compressor and hose before each use of the pneumatic system.

Preparing the tool for operation
Screw a suitable nozzle to the air inlet thread firmly and securely to connect the air supply hose (II).
Before installing the blade, make sure that the permissible rotation speed of the blade is equal to or higher than that of the grinder.
Mount the blade with the dimensions specified in the technical data table on the spindle. Tighten the blade by hand (IV) while holding the spindle with a wrench. Make sure that the wrench is removed from the tool after the blade has been mounted. If the wrench is left in the tool, it will turn into a projectile after it has been started, and this can cause serious injury.

Manually rotate the blade (several revolutions) to ensure that the blade rotates smoothly and without jams.
Attach a disc of abrasive paper or cloth to the underside of the blade. The surface of the disc to be clamped shall be covered with a special non-woven fabric to allow the disc to be held in place by the blade velcro. The disc should have the same diameter as the blade, it should be attached concentrically. The edge of the disc must not project beyond the edge of the blade. It is recommended to use discs without holes for the extraction of dust generated during work. The grinder blade is not equipped with holes and will wear out more quickly if you use a hole disc.

Adjust the air outlet of the tool so that the outgoing air stream is not directed towards the operator (V).
The tool is ready to be connected to a pneumatic system.

Connecting the tool to the pneumatic system
The figure shows the recommended manner of connecting the tool to the pneumatic system. This will ensure the most efficient use of the tool and also prolong the tool’s service life.

Apply a few drops of SAE 10 viscous oil into the air inlet.
If the tool is equipped with a rotation reversing switch, set the correct direction of rotation.
Wherever possible, adjust the pressure (torque).
Connect the tool to the pneumatic system using a hose with an internal diameter of 10 mm / 3/8”. Make sure the hose has a durability of at least 1.38 MPa. (V)
Make sure that the inserted tool is not in contact with any object, then run the tool for a few seconds to make sure that no suspicious sounds or vibrations are coming from the tool.

Starting and stopping the tool
Caution! Before starting the pneumatic tool, make sure that the mounted inserted tool does not come into contact with any object or any body part.

The tool is operated by means of a lever which opens the air valve and thus ensures the supply of compressed air to the tool drive.
Press the lever towards the housing. The valve can be secured with a lock to prevent the lever from being accidentally pressed in.
Pull out the lever (VI) before starting the tool. Use the locking device whenever the switch lever is not pressed in.
Allow the tool to reach its rated speed and only then start working.

Working with the grinder

• Make sure that the maximum equipment rotation speed is higher than that of the grinder.
• Start the grinder and allow the blade to reach its full rotation speed. Only a rotating blade should be applied to the workpiece.
• Position the grinder so that the entire surface of the grinding disc is used. This will ensure uniform wear of the disc.
• Move the grinder towards and away from you, and gradually to a side. Wood should be sanded along the grain. Sanding should be started with thicker grain sheets, and then use increasingly finer grain sheets until the desired effect is achieved. Avoid checking the condition of the wood surface worked with your bare hand. This can cause injury from splinters and burrs generated during work.
• The paper grain must be selected according to the surface worked. Too high grain of the grinding sheet will produce scratches on the surface of the material.
• Take regular breaks during operation to check the condition of the grinding sheet and the fill-up level of the dust container. If a grinding sheet is found to have been clogged with dust generated during work, or that the abrasive grain has worn, replace the sheet with a new one.
• Only apply as much pressure to the tool as you need to process the material. Excessive pressure can lead to uneven work results and even destroy the workpiece surface. Excessive pressure can lead to overheating of the surface, which can damage, for example, the sanded paint coating.
• Select the paper grain according to the type of work. Use more grain-rich paper for sanding and peeling. Use smoother paper for finishing work.
• Do not use the abrasive disc used for one type of work, for another type of work. For example, do not use the paint peeling disc to remove corrosion. Contamination remaining on the disc after finishing working with it once may adversely affect the surface to be machined during the next task.

MAINTENANCE

Never use petrol, solvent, or other flammable liquids for cleaning of tool. Fumes may ignite, causing the explosion of tool and serious injuries.
Solvents used for cleaning the tool handle and tool body can cause softening of seals. Thoroughly dry the tool before starting work. In case of any abnormality in the tool operation, the tool should be immediately disconnected from the pneumatic system.
All pneumatic system components must be protected from pollution. Pollution, which gets into the pneumatic system can destroy the tool and other elements of pneumatic system.

Maintenance of the tool before each use
Disconnect the tool from pneumatic system.
Before each use you should implant a small amount of preservative fluid (for example wd-40) through the air inlet.
Connect the tool to the pneumatic system and run it for about 30 seconds. This will allow to distribute the preservative liquid on the tool interior and clean it. Disconnect the tool from pneumatic system again.
A small quantity of SAE 10 oil let to the tool interior by air inlet and openings intended for that purpose. It is recommended to use SAE 10 oil intended for maintenance of pneumatic tools. Connect the tool and run it for a short time.

Attention! WD-40 may not serve as the appropriate lubricating oil.
Wipe the excess of oil, which is escaped by the outlets. The left oil can damage the tool sealing.

Other maintenance
Before each use of the tool you should check whether there are on the tool any visible signs of damage. Drivers, tool holders and the spindles should be kept clean. every 6 months, or after 100 hours of work you should submit the tool for examination by qualified personnel in repair workshop. If the tool was operated without the use of a recommended air supply system you should increase the frequency of tool examinations.

Removal of defects
You should discontinue the tool use immediately after any failure detection. Operation with a damaged tool can cause injuries. Any repair or replacement of the tool must be carried out by qualified personnel in authorized repair workshop.

WD-40 through the air inlet. Run the tool for a few seconds. The blades may stick to the rotor. Run the tool for about 30 seconds. Lubricate the tool with small amount of oil. Attention! The excess of oil can cause a decrease in power of tool. In this case, you should clean the drive.
Failure| Possible solution
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The tool starts and then slows down| The compressor does not provide proper air supply. The tool starts by the air collected in the tank of compressor. As the tank is emptying, the compressor has not kept pace with the refilling of air shortages. Connect the device to a more efficient compressor.

Insufficient power

| Make sure that your hoses have an internal diameter of at least such as specified in the table in point 3. Check the set point of pressure, whether it is set to the maximum value. Make sure that the tool is properly cleaned and lubricated. In the absence of results, submit the tool for repair.

Replacement parts

In order to obtain the information on spare parts for pneumatic tools, you must contact the manufacturer or its representative.

Worn tools are secondary raw materials – it is forbidden to dispose of them together with household waste because they contain substances harmful to human health and the environment! Please actively support the cost-effective management of natural resources and environmental protection by passing the used equipment to the point of storage for worn out devices. To reduce the amount of disposed waste it is necessary to re-use them, recycle or recover in another form.

References

• TOYA S.A. | Tool distributor in more than 100 countries
• TOYA S.A. | Tool distributor in more than 100 countries

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