Blastrac BG-250G13-S Operating Instructions Manual

Gas powered concrete grinder

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BG-250G13-S

Gas Powered Concrete Grinder

Blastrac

6215 N. Aluma Valley Dr.

Oklahoma City, OK 73121

1-800-256-3440

Revision (A) 5-4-05

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Page 1 BG-250G13-S Gas Powered Concrete Grinder Blastrac 6215 N. Aluma Valley Dr. Oklahoma City, OK 73121 1-800-256-3440 © Copyright Blastrac Revision (A) 5-4-05...
Page 2 Operating Instructions BG-250G13-S Technical Data May 2005 Contents Chapter 1 1.1 Rating 1.2 Unit specifications 1.3 Operating range and correct usage 1.4 Machine type designation 1.5 Advice for operators of the machine Copyright Blastrac Revision (A) 5-4-05...
Page 3 Tool diameter 10 in (250 mm) Working width 10 in (250 mm) Dust hose connection 3 in (75 mm) Recommended Dust Collector Blastrac® Turbo-Vac II or Blastrac 1-13DC Noise Level 78 DBA Vibration Level < 2,5 ms² Copyright Blastrac Revision (A) 5-4-05...
Page 4 Weight 260/271 lbs (118/123 kg) 1.3 Operating range and correct usage The BG-250G13-S is exclusively designed to grind horizontal surfaces. The machine may not be used for other purposes. The manufacturer will not be liable for damage or injury resulting from such incorrect usage.
Page 5 Technical Data May 2005 1.5 Advice for operators of the machine When you use the BG-250G13-S it is possible to exceed the maximum allowable sound level of 85 db(A). That sound level will vary depending on the location. If the...
Page 6 Operating Instructions BG-250G13-S Safety May 2005 Contents Chapter 2 2.1 Warnings and symbols 2.2 Organizational measures 2.3 Personnel selection and qualification 2.4 Safety precautions applicable to some operating sequences 2.5 Special work instructions 2.6 Definition of the Maintenance Mode 2.7 Possible dangerous aspects of the equipment 2.8 Electrical...
Page 7 Operating Instructions BG-250G13-S Safety May 2005 2.1 Warnings and symbols The following symbols are used in the Operating Instructions to highlight areas of particular importance: Symbol of operational safety. In these Operating Instructions this symbol will be shown next to safety precautions that are to be taken in order to increase safe operation of the machine.
Page 8 Operating Instructions BG-250G13-S Safety May 2005 Information, instructions and restrictions with regard to possible risks to personnel and/or to extensive machine damage. © Copyright Blastrac Revision (A) 5-4-05...
Page 9 Operating Instructions BG-250G13-S Safety May 2005 Warning against dangerous voltages. Indications relating to protective devices in electrical appliances. Indications where consultation with manufacturer is required. Instructions relating to periodic checks. Reference to important instructions contained in the Operating Instructions. ©...
Page 10 Operating Instructions BG-250G13-S Safety May 2005 .2 Organizational measures The Operating Instructions are to be kept near the machine all times. In addition to the Operating Instructions, general and legal regulation regarding acciden t prevention and environmental protection must be complied with.
Page 11 Operating Instructions BG-250G13-S Safety May 2005 If safety-critical changes occur to the machine or its working method, the machine must be shut down immediately. The cause of the fault must be established immediately and corrected prior to further operation of the machine.
Page 12 Operating Instructions BG-250G13-S Safety May 2005 Personnel being trained on the equipment may only be deployed on the machine under constant supervision of an experienced person. Work on electrical equipment or operating materials may only be undertaken by a skilled electrician or by trained persons under the guidance and supervision of a skilled electrician as well as in accordance with the electrical engineering regulations.
Page 13 Operating Instructions BG-250G13-S Safety May 2005 Before switching on the machine make sure that no-one can be endangered when the machine starts up. Do not switch off or remove the exhaust and ventilation devices when the machine is running. All persons in the proximity of the machine, when it is working, must wear ear protection and safety shoes.
Page 14 Operating Instructions BG-250G13-S Safety May 2005 Adjustment, servicing and inspection work and time limits specified in these Operating Instructions, as well as any information on the replacement of parts and equipment must be undertaken and/or complied with. These activities may only be undertaken by qualified personnel.
Page 15 Operating Instructions BG-250G13-S Safety May 2005 2.6 Definition of the Maintenance Mode Definition: The machine is in a safe condition when it cannot generate any hazard. Putting the equipment in the Maintenance Mode means: Lift up the machine (see Chapter 5) Switch off the machine.
Page 16 Operating Instructions BG-250G13-S Safety May 2005 2.7 Possible dangerous aspects of the equipment Any machine, if it is not used according the regulations, may be hazardous for operating, setting-up and service personnel. The operating authority is responsible for compliance with the...
Page 17 Operating Instructions BG-250G13-S General May 2005 Contents Chapter 3 3.1 Range of application 3.2 Scope of supply 3.3 Description of the machine 3.4 Operating elements 3.5 The tools 3.6 Care and maintenance © Copyright Blastrac Revision (A) 5-4-05...
Page 18 Honda Engine Manual The dust collector you have chosen for your machine ensures nearly dust free operation and also improves machine and tool life. Blastrac uses specially designed dust collection systems with high separation efficiency, thus extending the life of the machine components.
Page 19 Driving motor Brush seal (see Fig 3.4) The Blastrac grinding machine BG-250G13-S can produce a pattern of 10 inches (250 mm) and distinguishes itself by its high economic efficiency and easy handling. The machine levels uneven and undulating floors, therefore is also suitable for optimisation of surfaces before blasting.
Page 20 Handgrip and Jack Stand Operating lever Fig. 3.2 Before Switching on the BG-250G13-S, the front part of the grinding machine must be lifted by pushing down on the handgrip (2) and pulling back on the jack stand operating lever (1). When the machine has started, retract the jack stand and slowly lower the disc to the work surface.
Page 21 The throttle control may be pushed all the way forward to engage the choke and pulled all the way back to stop the engine. Cable may stretch over time requiring adjustment for correct operation. Push forward to increase engine speed and pull back to decrease engine speed. © Copyright Blastrac Revision (A) 5-4-05...
Page 22 Operating Instructions BG-250G13-S General May 2005 3.5 The Tools Fig. 3.4 Brush seal Flexible-Coupling Diamond grinding disc Bearing-Unit Adapter Jack stand Spacer © Copyright Blastrac Revision (A) 5-4-05...
Page 23 Contact Blastrac with any questions regarding the operation or maintenance of the machine. Never operate the machine if you are unsure. Be sure the BG-250G13-S is clean and free of any debris before operating. Turn off the machine and check the cleanliness periodically and clean if necessary.
Page 24 Operating Instructions BG-250G13-S Transport May 2005 Contents Chapter 4 4.1 Unit specifications 4.2 Manual mode of moving the machine 4.3 Transport with cranes or lifts 4.4 Transport of the machine with vehicle © Copyright Blastrac Revision (A) 5-4-05...
Page 25 Now you can move the machine to the new position. The machine will be transported after being separated into: • Grinding machine • Dust collector unit (Turbo Vac II or 1-13 DC) • General accessories © Copyright Blastrac Revision (A) 5-4-05...
Page 26 (2) Sling under wheel axle between wheel and chassis (3) sling under wheel axle between wheel and chassis on other side of machine Lift the load slowly and make sure it is stable before transporting. © Copyright Blastrac Revision (A) 5-4-05...
Page 27 Enclosed trailers or vehicles may be dangerous due to the gasoline present in the machine. Be aware of fumes that may exist in transport and storage. These fumes may present a fire hazard if exposed to extreme heat, spark or open flame. © Copyright Blastrac Revision (A) 5-4-05...
Page 28 Operating Instructions BG-250G13-S Initial Operation May 2005 Contents Chapter 5 5.1 Preparation for initial operation 5.2 Initial operation © Copyright Blastrac Revision (A) 5-4-05...
Page 29 The operator/owner is responsible for compliance with the safety regulations during operation and maintenance of safety devices supplied with the machine as well as the provision of appropriate additional safety devises. © Copyright Blastrac Revision (A) 5-4-05...
Page 30 Handgrip and Operating lever Fig. 5.1 Before Switching on the BG-250G13-S, the front part of the grinding machine must be lifted by pushing down on the handgrip (2) and pulling back on the operating lever (1). Pulling back on the operating lever (1) will lower the kick stand and take the weight off the grinding disc.
Page 31 The engine will need to remain in the choke condition until it warms up. See the Honda Operating Manual for details concerning the operation of the Honda engine. © Copyright Blastrac Revision (A) 5-4-05...
Page 32 Pulling back on the operating lever (1) will lower the kick stand and take the weight off the grinding disc. Pull throttle (3) all the way back or push E- stop (4). Figure 5.4 © Copyright Blastrac Revision (A) 5-4-05...
Page 34 Operating Instructions BG-250G13-S Operation May 2005 Contents Chapter 6 6.1 Operation 6.2 Switching-off the machine 6.3 Emergency Shutdown 6.4 Safety shutdown 6.5 Restarting after a fault 6.6 Procedures after lengthy down time © Copyright Blastrac Revision (A) 5-4-05...
Page 35 A regular inspection is necessary to prevent downtimes of your grinding machine. See chapter 7 "Maintenance". Pay attention to following aspects during operation of the Blastrac Grinding machine BG-250G13-S • Before beginning daily grinding work, be sure all fasteners are tight and secure.
Page 36 BG-250G13-S Operation May 2005 The normal start up of the Blastrac BG-250G13-S in the daily operation does not differ from the described process in chapter 5.2 "Initial operation". Fig. 6.1 (Electric BG 250 shown) After connecting the suction tube to the air intake (2) of the machine, you can treat the surface as described in the following.
Page 37 CG-1020DBT These diamond grinding discs are specially designed to be use on the concrete surfaces. For questions about your application, please contact your local Blastrac representative. Some blades are available in a variety of segment hardnesses. Segment hardness may be matched to specific jobs resulting in successful applications and improved diamond life.
Page 38 Observe the "Maintenance Mode” condition, chapter 2.6. Read and understand the entire Blastrac Operating Instructions and Honda Engine Manual before operating or servicing this machine. Do not depend on individual chapters for all safety and operating procedures.
Page 39 6.6 Procedures after lengthy down time Steps before storage If the Blastrac grinding machine will be stored for a long period or time, follow the below steps: Rest the machine onto the kick stand so that the brush seals and the flexible coupling are not touching the floor.
Page 40 7.2 Maintenance and inspection list 7.3 Repairing 7.4 Grinding disc replacement / assembly 7.5 Bearing-Unit 7.6 Flexible coupling 7.7 The V-Belt drive 7.8 The driving motor 7.9 Additional maintenance 7.10 Spare parts 7.11 Influences on the grinding pattern © Copyright Blastrac Revision (A) 5-4-05...
Page 41 Our specialists will be happy to assist you with more advice. Follow additional operating and maintenance of OEM if included during your service and maintenance work. Pay attention to special notice given by instructions for electric-motors or combustion engines. © Copyright Blastrac Revision (A) 5-4-05...
Page 42 • Check the tension of the V-belt, tension again if necessary. • Check the brush seal • Lubricate the bearing-unit and the Quarterly (Monthly) castor. • Replace the flexible coupling • Full overhaul and cleaning of the Annually complete machine. © Copyright Blastrac Revision (A) 5-4-05...
Page 43 As already mentioned in Chapter 5 “Initial operation” we recommend executing the first repair work on the machine under the supervision of Blastrac personnel. You should stock all spare or wear parts that cannot be supplied quickly. As a rule, downtime is more expensive than the cost for the corresponding spare part.
Page 44 Remove the block (2) and tilt the machine forwards. When replacing the grinding disc (4), also check the condition of the coupling and the grinding disc adapter (5). Always replace the worn screws (7). © Copyright Blastrac Revision (A) 5-4-05...
Page 45 (3). Finally wipe the excess of grease with a cleaning cloth (machine in Maintenance Mode). Blastrac recommends using grease that is appropriate for a temperature range between 77-270° F (25-130 ° C). Most lithium based greases will be appropriate. Consult the label for temperature range.
Page 46 2 Unscrew the hexagonal head screws (7) and the nuts fitted at the bearing-unit (2). Check the condition of the screws (4) and of the spacer tubes (6). Always replace all worn or damaged parts. © Copyright Blastrac Revision (A) 5-4-05...
Page 47 V-belt. Collection of dirt due to oil, grease or chemicals must be avoided. In order to get perfect power transmission the V-belt drive has to be checked regularly. Fig. 7.4 (electric unit shown) © Copyright Blastrac Revision (A) 5-4-05...
Page 48 Hand tighten the motor fastening screws. Stretch the belt tension with the tensioning screw attached to the motor base. (Note the max permissible tension according to Fig. 7.6). Tighten the motor fastening screws Screw on the cover. © Copyright Blastrac Revision (A) 5-4-05...
Page 49 Damage to the motor can be detected by unusual noises, vibrations or erratic function of the motor. In case of malfunction of the motor, please contact Blastrac. If the malfunction can not be repaired, please inform the Blastrac service center. © Copyright Blastrac...
Page 50 Apply oil on the adjusting pin of the kick stand operating lever and other moving parts at regular intervals. 7.10 Spare Blastrac recommends having the following spare parts on stock to avoid long down times. Part No. Description Qty.
Page 52 Operating Instructions BG-250G13-S Electrical May 2005 Contents Chapter 8 8.1 Directions for electrical engineering 8.2 Electric circuits diagrams © Copyright Blastrac Revision A 5-4-05...
Page 53 Order the electric items with reference to the circuit diagrams in chapter 8.1 or call a Blastrac service center. © Copyright Blastrac Revision A 5-4-05...
Page 55 Operating Instructions BG-250G13-S Troubleshooting May 2005 Contents Chapter 9 9.1 Grinder troubleshooting 9.2 Electrical troubleshooting © Copyright Blastrac Revision (A) 5-4-05...
Page 56 Inappropriate grinding tool Replace the grinding tools with for the application appropriate grinding tools for the surface to be treated V-belt tension low Tension the V-belt © Copyright Blastrac Revision (A) 5-4-05...
Page 57 Put the machine in “Maintenance Mode.” See Chapter 2.6 Fault Possible cause Remedy Motor does E-Stop depressed Pull out E-Stop not start Honda motor ON/OFF Turn switch to ON switch OFF © Copyright Blastrac Revision (A) 5-4-05...
Page 58 Operating Instructions BG-250G13-S Spare Parts May 2005 Contents Chapter 10 10.1 Spares Parts List BG250G13-S © Copyright Blastrac Revision (A) 5-4-05...
Page 60 HANDLE BAR DG44 HANDLE GRIP 5009720 SCREW/1/4"-20 BUTTON HEAD X 1.000" 05-73723 3/8"-16 NYLOK NUT P000008 DECAL / BLASTRAC 4-3/8" X 10-1/2" WHITE/CLEAR BELT / AUTOMOTIVE-V, 40" (1015MM) EFFECTIVE P003651 LENGTH 6854010 92B0193 DECAL / GUARD REMOVAL P000818 PLATE/SERIAL NUMBER - BLASTRAC...
Page 61 SCR/CAP HEX M10.0 X 1.50 X 55 G8.8 STL P004003 NUT/NYLON INSERTED M10.0 X 1.50 DG05 DG05 ADAPTER DISK P004001 SCR/CAP HEX M10.0 X 1.50 X 40 G8.8 STL DG66 SPRING DG53 BOLT DG54 PLUNGER (BOLT) © Copyright Blastrac Revision (A) 5-4-05...

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