COBRA Safety and operating instructions Petrol breakers Valid for United States of America only © 2010 Atlas Copco Construction Tools AB | No.
COBRA PRO, TT, TT-AWD Contents Contents Introduction. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 5 About the Safety and operating instructions. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 5 Safety instructions. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 6 Safety signal words. . . . . . .
Contents COBRA PRO, TT, TT-AWD Spark plug check. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 18 Hammer mechanism oil check. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 18 Every month. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 19 Gearbox oil level check. . . . . . . . . . . . . . . . . . .
COBRA PRO, TT, TT-AWD Safety and operating instructions Introduction Thank you for choosing a product from Atlas Copco. Since 1873, we have been committed to finding new and better ways of fulfilling our customers' needs. Through the years, we have developed innovative and ergonomic product designs that have helped customers improve and rationalize their daily work. Atlas Copco has a strong global sales and service network, consisting of customer centers and distributors worldwide.
Safety and operating instructions COBRA PRO, TT, TT-AWD Drugs, alcohol or medication Safety instructions To reduce the risk of serious injury or death to yourself or others, read and understand the Safety and operating instruction before installing, operating, repairing, maintaining, or changing accessories on the machine.
COBRA PRO, TT, TT-AWD ► Avoid contact with the warm exhaust pipe or the bottom of the machine. DANGER Fuel hazard The fuel (petrol and oil) is extremely flammable and petrol fumes can explode when ignited, causing serious injury or death. ► Protect your skin from contact with the fuel. If fuel has penetrated the skin, consult a qualified health professional. ► Never remove the filler cap, and never fill the fuel tank when the machine is hot.
Safety and operating instructions COBRA PRO, TT, TT-AWD WARNING Dust and fume hazard Dusts and/or fumes generated or dispersed when using the machine may cause serious and permanent respiratory disease, illness, or other bodily injury (for example, silicosis or other irreversible lung disease that can be fatal, cancer, birth defects, and/or skin inflammation).
COBRA PRO, TT, TT-AWD WARNING Projectiles Failure of the work piece, of accessories, or even of the machine itself may generate high velocity projectiles. During operating, splinters or other particles from the working material may become projectiles and cause personal injury by striking the operator or other persons. To reduce these risk: ► Use approved personal protective equipment and safety helmet, including impact resistant eye protection with side protection.
Safety and operating instructions COBRA PRO, TT, TT-AWD ► Participate in health surveillance or monitoring, medical exams and training programs offered by your employer and when required by law. ► When working in cold conditions wear warm clothing and keep hands warm and dry. See the ”Noise and vibration declaration statement” for the machine, including the declared vibration values. This information can be found at the end of these Safety and operating instructions.
COBRA PRO, TT, TT-AWD Safety and operating instructions ► Wait until the front cover, exhaust pipe, and bottom of the machine has cooled down before carrying out maintenance work. CAUTION Hot insertion tool The tip of the insertion tool can become hot and sharp when used. Touching it can lead to burns and cuts. ► Never touch a hot or sharp insertion tool. ► Wait until the insertion tool has cooled down before carrying out maintenance work.
Safety and operating instructions COBRA PRO, TT, TT-AWD Main parts Overview To reduce the risk of serious injury or death to yourself or others, read the Safety instructions section found on the previous pages of this manual before operating the machine. Design and function Cobra Pro is designed for medium to heavy demolition of material such as concrete and asphalt. Cobra TT and TT-AWD are designed for tie tamping and can also be used for medium demolition of material such as asphalt.
COBRA PRO, TT, TT-AWD R. Tool retainer Safety and operating instructions Noise level label Labels The machine is fitted with labels containing important information about personal safety and machine maintenance. The labels shall be in such condition that they are easy to read. New labels can be ordered from the spare parts list. The label indicates the guaranteed noise level corresponding to EC-directive 2000/14/EC. See "Technical data" for accurate noise level.
Safety and operating instructions COBRA PRO, TT, TT-AWD Filling procedure 1. Stop the engine and let it cool down before filling the tank. Transport WARNING Fuel hazard ► Empty the tank before transport. 2. The machine must be in a upright position when filling it with fuel. Installation Fuel Two-stroke oil The fuel is petrol with a 2% oil mixture (1 part oil to 50 parts petrol). Always use high quality lead-free petrol (non-alkylat).
COBRA PRO, TT, TT-AWD DANGER Run over If the stop function is not working, it can result in serious injuries or death. ► Before using the Audio Warning Device test the function of the warning equipment. ► If the stop function is not working, contact your nearest authorised workshop. Checking the stop function 1. Check that plug (B) is fitted to outlet (A), so the machine is in order to start. 2. Start the machine and then pull out the plug (B). The machine shall stop immediately.
Safety and operating instructions COBRA PRO, TT, TT-AWD 6. When the machine starts, open the choke by turning the choke control downwards. Checking for wear on the tool shank 7. Warm up the engine for 2–3 minutes. Restarting a warm machine 1. Press the decompression knob. 2. Do not touch the throttle lever. 3. Check that the choke is open and pull on the starter handle. Restarting an overheated machine If a hot engine stops after a short while, it can be due to vapour lock.
COBRA PRO, TT, TT-AWD ♦ Never break off too large pieces. Adjust the breaking distance (A) so that the inserted tool does not fasten. Safety and operating instructions Breaking at high altitude To get the best result when breaking at high altitude, do the following: ♦ Check that the air filter is in good condition. ♦ If necessary, lean the fuel mix by turning the main nozzle (A) clockwise. Breaking ♦ Never use the machine as a lever, the material should be broken by impact energy.
Safety and operating instructions COBRA PRO, TT, TT-AWD ♦ Before starting maintenance on the machine, clean it in order to avoid exposure to hazard substances. See “Dust and fume hazards” ♦ Use only authorised parts. Any damage or malfunction caused by the use of unauthorised parts is not covered by warranty or product liability. ♦ Use the shank gauge that corresponds to the dimension of the inserted tool shank.
COBRA PRO, TT, TT-AWD Safety and operating instructions Repair Replacing the starter cord Removing the old starter cord 1. Remove the starting mechanism. 2. Pull out about 40 cm (16 in.) of the cord. 3. Place the starter cord in the recess (A) in the pulley. Use only Atlas Copco IMPACT-OIL. Every month Gearbox oil level check Before releasing the oil plug remove the six nuts for the back cover. The level in the gearbox is checked by unscrewing the oil plug.
Safety and operating instructions COBRA PRO, TT, TT-AWD Fitting a new starter cord 6. WARNING Spring tension Pre-load the starting spring 9. Place the notch in the pulley edge in line with the starter cord guide and place the starter cord in the notch. The starter spring may cause personal injury by striking the operator or other persons. ► Wear impact resistant eye protection with side protection and gloves. 10. Fit the lock ring.
COBRA PRO, TT, TT-AWD 1. Check that the switch is in the ON position (A). Safety and operating instructions Before a petrol driven machine is deposited it must be emptied and cleaned of all oil and petrol. Remaining oil and petrol must be dealt with in a way that does not affect the environment. 2. Check that there is fuel in the tank. 3. Check that the spark plug is undamaged and that the electrode gap is 0.6–0.7 mm (0.024-0.0275 in.). 4. Check that the air filter is clean and not clogged. 5.
Safety and operating instructions COBRA PRO, TT, TT-AWD Technical data Products Description Tool shank size, mm (in.
COBRA PRO, TT, TT-AWD Safety and operating instructions Impact unit Cobra Pro Cobra TT, TT-AWD Impact energy 60 J at 24 Hz 40 J at 27 Hz Blows/minute 1440 1620 Frequency (Hz) 24 27 Lubrication Impact mechanism through separate oil bath Oil type for impact unit Atlas Copco IMPACT-OIL Atlas Copco IMPACT-OIL Oil capacity, litres (oz) 0.1 (3.38) 0.1 (3.38) Oil consumption, litres/hour (oz/hour) 0.005 (0.17) 0.005 (0.
Safety and operating instructions COBRA PRO, TT, TT-AWD Noise and vibration data Noise Declared values Sound pressure Sound power ISO 11203 2000/14/EC Lp Lw r=1m dB(A) rel 20µPa guaranteed dB(A) rel 1pW Cobra Pro 96 109 Cobra TT 96 109 Cobra TT-AWD 96 109 Type Vibration Three axes values Declared values ISO 20643 Additional vibration information Concrete A B C m/s 2 value m/s 2 spreads m/s 2 range Cobra Pro 4.3 0.9 Cobra TT 4.5 1.0 Cobra TT-AWD 4.5 1.
COBRA PRO, TT, TT-AWD Safety and operating instructions EC Declaration of Conformity EC Declaration of Conformity (EC Directive 2006/42/EC) We, Atlas Copco Construction Tools AB, hereby declare that the machines listed below conform to the provisions of EC Directive 2006/42/EC (Machinery Directive) and 2000/14/EC (Noise Directive), and the harmonised standards mentioned below.
Safety and operating instructions COBRA PRO, TT, TT-AWD Warranty This warranty only applies in the United States of America.
COBRA PRO, TT, TT-AWD Safety and operating instructions If you are located more than 100 miles from the nearest Atlas Copco Representative, the Atlas Copco Representative will (at its choice) (i) pay for shipping costs of the machine to and from the nearest Atlas Copco Representative; (ii) provide for a technician to come to you to make the warranty repair under this Emission Control System Warranty; or (iii) pay for the warranty repair to be made at a local service facility designated by the Atlas Copco
© 2010 Atlas Copco Construction Tools AB | No. 9800 0995 93 | 2010-01-12 Any unauthorized use or copying of the contents or any part thereof is prohibited. This applies in particular to trademarks, model denominations, part numbers, and drawings. www.atlascopco.
