ELECTRIC ANGLE GRINDER

Transcription

1 ELECTRIC ANGLE GRINDER MANUAL Please read this manual to the last for safe and efficient operating before using, keep well in place can find easily.

2 We, Keyang Electric Machinery Co., Ltd., would like to express our sincerest gratitude to you who always use our power tools. You must read carefully this instruction manual before use the tool for safe and effective operation. Table of Contents 1. Safety Rules 3 2. Check before use 8 3. Specifications and standard accessories Functional Descriptions and Application Installing and Removing Grinding Stone Operating Instructions Maintenance 15 Note As our engineers are constantly striving to advance our research and development, the shape, structure and characteristics of our tools may be changed at any time. Safety Rules GENERAL SAFETY INSTRUCTIONS 1. Keep your work area in order. Distractions in the work area and workbench may cause accidents. 2. Consider your work environment. Do not expose power tools to rain and other forms of moisture. Keep your work area well lit. Do not operate power tools in explosive atmospheres, such as in the presence of flammable liquids or gases. 3. Beware of electric shocks. Avoid body contact with grounded surfaces such as water pipes, heaters, ranges and refrigerators. 4. Keep children away while operating a power tool. Keep children away from a power tool or extension cord. Keep visitors away from your work area. 5. Keep your tools in a safe place, away from your children. Keep your tools in a dry and locked place out of the reach of children. 6. Do not plug power tools into overloaded electric circuits. Using power tools with the specified electric output will allow for their safer and more effective operation. 7. Always use the proper tools. Do not use weak tools or parts for high strength work. Use the correct tool for your application. For example: do not use a circular saw to fell or prune trees. 8. Dress properly. Do not wear loose clothing or jewelry. Loose clothes, and jewelry or long hair may be caught in moving tool parts. Non-skid safety shoes must be used for outdoor operation of power tools. 9. Always wear safety goggles. Use a dust mask or a face mask for applications that generate dust. 10. Do not abuse the cord. Never use the cord to carry tools or to pull a plug from an outlet. Keep the cord away from heat, oil, and sharp edges. 11. Fix your working materials. Fix your working materials with a clamp or a vice, rather than by hand. This is safer and lets you operate your work materials with both hands.

3 12. Do not overreach. Keep proper footing and balance at all times. 13. Maintain your tools with care. Keep your tools clean and sharp so that you will be able to work with them efficiently and safely. Follow maintenance rules and replacement instructions. Periodically examine your tool s plugs and cords. They must be serviced only by qualified repair personnel. Periodically examine extension cords, and replace damaged ones promptly. Keep the handles of your power tools dry and free from oil or grease. 14. Keep electric plug pulled off. Always pull off your tools electric plugs from their power supply before making any adjustments on them, before changing their accessories, (such as drills, blades, bits, and cutters), or before storing them. 15. Remove adjusting keys. Check to see that keys and adjusting wrenches have been removed from your tools before you switch them ON. 16. Avoid accidental starting. Carrying tools with your finger on the switch or plugging in tools with their switches ON may cause them to accidentally start. Before plugging in a tool, make sure the switch is OFF. 17. Use an outdoor extension cord when operating tools outdoors. When operating a power tool outdoors, use an outdoor extension cord rated for outdoor use. 18. Stay alert. Watch what you are doing and use common sense when operating a power tool. Do not use a power tool when you are having difficulty in concentrating on your work. 19. Check your tools before using them. Make sure your tools safety devices and running parts are functioning well and that the latter are not caught in anything before you use them. Correct assembly is necessary for perfect operation. If a safety device or part is damaged, have it serviced at a Keyang Service Center. Do not use a tool when its switch is not functioning. 20. Exercise caution!. Use only parts and accessories that are recommended by your tools manufacturers or that are specified in your tools manuals. Using parts and accessories that are not specified in your manuals or catalogues may cause injuries. 21. Have your tools serviced only by qualified repair personnel. Follow safety rules when operating power tools. Only qualified electrical repair personnel must service tools. Service or maintenance performed by unqualified personnel may cause accidents. 22.Change Power Cord if the supply cord is damaged, it must be replaced by a special cord or assembly available from the manufacturer or its service agent. The instructions in this user s guide include critical information for safe use. Failure to follow all instructions in this manual, may cause property damage, serious personal injury, or loss of life. WARNING and CAUTION signs are used in this manual for your safe use. Please study them and learn their meaning. Warning Failure to follow these instructions, can result in serious personal injury, or loss of life. Special Safety Rules Caution Failure to follow these instructions, might result in serious personal injury, or loss of life. To prevent the possible accidents during using and carrying the tool, cautions are used in this manual. These warnings and cautions cannot cover all possible accidents. Take great care during using and carrying the tool. Read and understand all instructions. Be careful for hazardous situation in special condition. Warning Do not apply grinding oil or water during use. Water or other liquids entering a power tool will increase the risk of electric shock or loss of life. Do not expose power tools to rain or wet condition. This may cause serious personal injury or loss of life by electric shock. Do not make your body including fingers and hands contact with grinding stone during operation. Avoid body including fingers and hands contact or being caught in grinding stone. This may cause serious personal injury. Always attach the wheel guard during operation. The wheel guard protects operator from injuring by fragments of damaged grinding stone or wheel. Always attach the wheel guard during operation with open grinding stone pointed away from operator. Be sure switch is OFF before plugging in. Plugging in tools that have the switch ON invites serious personal injury by sudden rotation of grinding stone. Always wear safety goggle during operation. Grinding power created by grinding may cause serious eye injury. Caution Failure to follow these instructions, may result in malfunction or unrepairable trouble. Disconnect the plug from the power supply before installing and removing the grinding stone. It may cause serious personal injury by malfunction.

4 Never use the grinding stone with lower peripheral velocity. Use of the grinding stone with lower peripheral velocity may cause serious personal injury by damaged grinding stone. Always wear dust mask during operation. Grinding power created by grinding contain chemicals known to cause cancer, birth defects or other reproductive harm. Damaged cord must be replaced or repaired immediately. This may cause electric shock. Check that speed marked on the wheel is equal to or greater than the rated speed of the grinder; Inspect the grinding wheel before use, do not use chipped, cracked or otherwise defective products; Do not use separate reducing bushings or adapters to adapt large hole abrasive wheels; Do not use cutting off wheel for side grinding; Ensure that ventilation openings are kept clear when working in dusty conditions. If it should become necessary to clear dust, first disconnect the tool from the mains supply(use non metallic objects) and avoid damaging internal parts; The wheel continues to rotate after the tool is switched off. Caution Caution Use the extension cord as short as possible. Too long or thin cord may cause high voltage drop and poor motor power. Always make a trial run before operation. Make a trial run with grinding stone pointed away from people to check the tool. An explanation of any symbols or pictograms marked on the tool relevant to safe use; n o V A Hz W rated no load speed volts amperes hertz watts During operation, hold the tool securely by both hands. Dropped tool may cause serious personal injury. Use only nationally authorized grinding disk for specific application. Failure to follow this instruction, may cause performance deterioration of the tool and/or serious personal injury. Never leave running tool alone. This may cause personal injury of other operator. Be sure grinding spark away from inflammables or human body. Grinding spark contacted with inflammables may cause a fire, or chips contacted with human body cause a burn. Always wear earplug for appropriate condition. Amplified noise in the close space may cause personal injury. /min ~ revolutions or reciprocations per minute alternating current Class construction Speed Control Disposal of Old Electrical & Electronic Equipment

5 1. The leakage circuit breaker Make sure the leakage circuit breaker is in the power source of the disc grinder. 2. The extension cord Nominal cross sectional of area conductor 110 V V Maximum length 2 Check before use Nominal cross sectional of area conductor Maximum length 1.25 mm 2 15 m 1.25 mm 2 30 m 2mm 2 25 m 2 mm 2 50 m 3.5 mm 2 45 m 3.5 mm 2 90 m When the power source is located far from your location, you may use the extension cord. However, you should use the extension cord with proper length and thickness not to prohibit the current. When you use too long or thin extension cord, the voltage drop will be higher. In result, the power of the motor will be decreased. Please use the shortest extension cord possible. When the extension cord is damaged, you must change or repair it immediately. 5. The switch When you plug in the power source with the tool switched on, you may be injured seriously by sudden rotating of the tool. Make sure the switch lever is returned to its original position by pushing or pulling it. 6. The wheel guard The wheel guard is a protective wall preparing for the damage of the grinding stone. You must install the wheel guard. You can set the desired angle of the wheel guard by unfastening two small screws. Please use the tool after adjusting the angle of the wheel guard for the work. After adjustment, please fasten two small screws tightly. 7. Check and installing of the grinding stone Be sure the grinding stone is in normal condition and free from cracks or damage. Make sure the grinding stone is installed securely. To install the grinding stone, see to the section installing and removing grinding stone. 3. The working environment Make sure to be operating in a proper working environment referring to the caution. During the grinding work for thin steel sheets, grinding sound may resound through the steel sheet and make ear-splitting noise depending on the situation of the working plate. In this case, please spread out a rubber plate under the steel sheet to decrease noise. 4. The power source You must use the tool in the power source specified in the nameplate. When you use the tool for 110V in 220V/230V, the speed of the motor will be increased abnormally. In result, the grinding stone and the tool may be damaged. When you use the tool for 110V in 220V/230V, the motor can be damaged by a fire. 8. Mains Outlet When inserting the plug, if a sound is heard or if it is a taken out easily, you must repair it. Please contact nearby electric shop. When you use the mains outlet as it is, it causes the accident by overheating. 9. Trial run Always make a trial run before operation with grinding stone pointed away from people to check the tool. Trial run time When replacing grinding ston When using grinder initially 3 minutes or more 1 minute or more Before switching on the disc grinder, be sure the rotating part of the disc grinder is not contacted work material. Accidental switching on with contacted other objects may cause personal injury by damaged grinding stone.

6 Specifications and Standard Accessories Functional Descriptions and Applications Specifications 1. Functional descriptions Model Items Power source Motor Rated Power(W) No load speed L pa L WA A Type : AC 110V 50/60 Hz B Type : AC 220~230V 50/60 Hz AC 120V 60 Hz C Type : AC 100V 50/60 Hz DType : AC 120V 50/60 Hz AC 220~230V 50 Hz E Type : AC 240V 50/60 Hz Single phase series commutator series motor 1200 no 10000/min 89 db(a) 103 db(a) Lock pin Handle Trigger switch Stopper Brush cap Grinding stone Side handle Wheel guard Lock pin Speed Controller Handle a hw 4.5 m/s 2 Size of grinding stone (outer dia. x thickness x minor dia., mm) Weight (Without cord) kg Brush cap Stopper Trigger switch Cord Peripheral velocity of the grinding stone 2-core cabtyre cable 4800 m/min Grinding stone Wheel guard Standard accessories Items Model Grinding stone Optional Optional Optional Optional 2. Application Finishing and smoothening iron, bronze, aluminum, cast-iron products. Grinding welded part, and removing rust. Finishing plastics, slates, bricks and marbles. Groove and cut roof tile, tile, stone, etc. by attaching diamond wheel. Spanner Side handle

7 Installing and Removing Grinding Stone Operating Instructions Wheel nut Always turn off the switch and disconnect the plug from the power supply before installing and removing grinding stone. Never use the grinding stone below the peripheral velocity (See to specifications). Spanner Fastening Grinding stone Wheel washer Wheel guard Spindle 1) Place the spindle upwards. Insert the depressed part of the wheel washer onto the plane part of the spindle. 2) Place the prominent part of the grinding stone onto the wheel washer. 3) Set the wheel nut onto the spindle over the grinding stone by a screw. 4) Insert the lock pin in the gear cover, then fasten the wheel nut with the spanner. 1. Avoid excessive pressure on the grinding stone. Avoid excessive pressure on the grinding stone. Grinding is done by tool s weight. Apply the grinding stone lightly to the work. Excessive pressure on the grinding stone will decrease grinding speed and cause rough finishing surface. Also, it may cause overheating and motor failure. 2. Pressing angle Do not apply the whole surfaces of the grinding stone to work material, but apply its circumference. Efficient grinding is achieved by keeping the angle between grinding stone and work material from 15 to 30 as shown in the picture. Side handle To remove the grinding stone, reverse the above procedures. 3. Grinding direction The wheel nut has prominent and depressed sides as shown in the figure, and both sides can be used. Use the wheel nut differently as bellows depending on the depth of the grinding stone. For thin grinding stone (4 mm), face the depressed side of the wheel nut down. For thick grinding stone (over 4.5 mm), face the prominent side of the wheel nut down. prominent side depressed side wheel nut When using a new grinding stone, be certain to grind while pulling tool backwards (B direction) until the grinding stone becomes rounded on its edge. Then, the grinder can be moved to any direction. This grinding stone (Grinding particle: A, Mesh: #36) is best for heavy grinding in general steel materials. Also, it can be used in wide range of other materials. For its lower mesh, apply the grinding stone to the work material lightly and grind steadily to create smooth finishing surface that can be made by the grinding stone with higher mesh. 4. Caution after use Switch off to stop the rotation of the grinding stone, and keep the disc grinder in safe place. When you keep the disc grinder with the grinding stone rotated in the place filled with dust and shavings, dust and shavings can be gotten into the disc grinder. The grinding stone can be cracked or grooved by an impact. Please take care not to impact on the disc grinder. If the disc grinder is hit against something or fallen down, you must check the grinding stone and disc grinder.

8 5. How to rotate the head of the disc grinder Remove the plug from plug socket before any operation. For the above purpose, rotate the head of the disc grinder in a 90-degree turn instead of rotating the handle. And then, unscrew four screws and the head. Do not remove the head from the main body wholly but rotate to new position. After that, set four screws and fasten them. 1. Change of the grinding stone Maintenance Disconnect the plug from the power supply before making any maintenance. Please change the grinding stone with new one when outer diameter of the grinding stone in 125mm is worn to 70 mm (For the grinding stone in 150 mm is 80mm) 6. Speed Control (DG-125CV, DG-150CV ) 2. Screws Step Rotate No Load speed (/min) Carbon brush Make sure screws in each part are set tightly at regular intervals. When screws are loose, fasten them tightly. The loose screw causes the danger situation. Carbon brush that is a consumption material is used in motor part. There has been contained automatic cutoff function of electricity (auto-stop) when carbon brush is worn out so that you shall not be bewildered at such time when our product stops operation but please check if carbon brush is worn out so as to replace both it and opposite side brush with new ones while you shall clean carbon brush so that this may slide freely within brush holder. You must purchase the genuine parts in A/S centers authorized by Keyang Electric Machinery Co., Ltd. for change. When you use the carbon brush other than the genuine parts, the commutator may be worn rapidly. In result, the life of the tool can be shortened. How to change: Remove the brush cap with the minus driver to take off the carbon brush.

9 4. Motor The winding and commutator in the motor are the core of the disc grinder. Do not scratch the surface of the winding and commutator in the motor, and do not apply oil or water on it. Dust in the motor causes the trouble of the motor. After using the disc grinder for 50hours, let the compressed air in the ventilation slots in the handle side by rotating the disc grinder in no-load revolution to eliminate dust from the motor. 5. Keep after operation You must keep the tool out of reach of children in dry place. 6. Abnormal operation It is very dangerous for customers to troubleshoot or repair the tool for themselves. Contact nearby A/S center (agencies) for solution. Disposal of Old Electrical & Electronic Equipment (Applicable in the European Union and other European countries with separate collection systems) This symbol on the product or on its packaging indicates that this product shall not be treated as household waste. Instead it shall be handed over to the applicable collection point for the recycling of electrical and electronic equipment. By ensuring this product is disposed of correctly, you will help prevent potential negative consequences for the environment and human health, which could otherwise be caused by inappropriate waste handling of this product. The recycling of materials will help to conserve natural resources. For more detailed information about recycling of this product, please contact your local city office, your household waste disposal service or the shop where you purchased the product.

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