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15 

4.5 

Changing the diamond disc 

 
Read chapter 3 

“Safety”

 before changing the disk. 

 
 

Warning!

  

Always wear Personal Protective Equipment!

  

The dust can be hazardous to the health! Wear a dustmask! 

 

 

The disk can get hot! Don’t risk burning your hands! Wear protective gloves! 

 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 

Removing the diamond disc 

 

 

Read chapter 3 Safety. 

 

Make sure the machine cannot start up. Remove the key of the deadman switch and unplug the power 
supply plug (on electrical versions) Remove the ignition key from the contact switch (Petrol version).  

 

Lay down the machine so it is lying on the handle. Make sure the machine will not fall back down. A 
second person can hold the handle down, to make sure it will not fall back down. 

 

Loosen the 4 bolts with an appropriate key. 

 

Remove the diamond or multiflail disc. 

Mounting the diamond disc 

 

Read chapter 3 Safety. 

 

Make sure the machine cannot start up. Remove the key of the deadman switch and unplug the power 
supply plug (on electrical versions) Remove the ignition key from the contact switch (Petrol version).  

 

Lay down the machine so it is lying on the handle. Make sure the machine will not fall back down. A 
second person can hold the handle down, to make sure it will not fall back down. 

 

Fix the diamond or multiflail disc underneath the adapter plate and turn the 4 bolts with an appropriate 
key tight. 

 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 

 

 

Pull out the mains plug before you start 

 

Always wear gloves and a 

dust mask

 of at least 

class FFP3

 

 

Use an extra vacuum cleaner in order to work as dust free as possible 

 

Summary of Contents for BG-250 TWIN

Page 1: ...Original instructions in English OPERATING INSTRUCTIONS BG 250E BG 250P BG 250A BG 250 TWIN VERSION 2 6...

Page 2: ...s Repairs Cleaning Test on By Inspection before initial operation on __________________________________________ By __________________________________________ Date of initial operation ________________...

Page 3: ...al safety 14 4 2 Checkpoints of machine safety 14 4 3 Checkpoints of work area 14 4 4 Manual moving of the machine 14 4 5 Changing the diamond disc 15 5 Operating 16 5 1 Before switching on 16 Checkin...

Page 4: ...der to make the operating and maintenance personnel familiar with all elements of the machine 2 Machine description The Blastrac grinding machine BG 250 is an electric or petrol driven floor grinding...

Page 5: ...stic floating shroud This will save precious time and money when the machine has to be cleaned after use in asbestos The BG 250 TWIN is specially designed for fast and easy switching between normal gr...

Page 6: ...rdisc Red 250mm BG707114 Stardisc Black 250mm E09250 ARROW GRINDING DISC 250 MM E12020 250PCDG PCD GRINDING DISC 250 MM For hard sub floors BG707250 1 PCD GRINDING DISC 250 MM For soft sub floors 0050...

Page 7: ...ectrical cables and dust hose s from the surface to be treated j Make sure that there are no cables or hoses in the driving direction of the machine k Make sure that there is nothing standing or situa...

Page 8: ...r jewellery including rings d Stay alert watch what you are doing and use common sense when operating the machine e The cord of the deadman switch key should always be fastened on your arm or on to yo...

Page 9: ...dust collector must be fitted with a HEPA filter c Read the operating instructions of the dust collector before using it d The dust container bag of the dust collector must be emptied regularly Comply...

Page 10: ...spiratory protection which is sufficient for work with asbestos and must have knowledge of the correct HEPA filters that are to be used g If there is a possibility that asbestos fibres are released th...

Page 11: ...ards for the maintenance staff or other people k The suitable precautions include decontamination before disassembling the machine adequate filtered ventilation of the exhaust air from the room in whi...

Page 12: ...12 p Only lift the machine as shown in the picture below...

Page 13: ...mark on this machine Wear protecting gloves Safety shoes obliged Consult the manual before operating the machine Name address and CE mark The machine type The net weight of the machine in kilogram Th...

Page 14: ...ightness No loose bolts and or nuts are permitted Check the electrical components cables and connections for wear and or damages Dust hose connections must be reliable use hose clamps and industrial t...

Page 15: ...le down to make sure it will not fall back down Loosen the 4 bolts with an appropriate key Remove the diamond or multiflail disc Mounting the diamond disc Read chapter 3 Safety Make sure the machine c...

Page 16: ...tate the inverter switch inside the mains plug to the opposite position Reconnect the machine to the power supply and check the turning direction of the motor again 5 2 Switch on the BG 250E Turn on t...

Page 17: ...he gas throttle 4 up to the half and turn the contact switch 5 to start the engine When the battery is empty the machine could always be started with the cord 7 Lift the machine support with the lever...

Page 18: ...ressure drops below the setpoint switches the electrical circuit off The pressure difference is measured inside the dust hose connection and on the side of the box The measuring points may not be clos...

Page 19: ...the gas throttle The BG 250TWIN has the switch for LOW RPM s Changing the pulleys Remove the front cover Loosen 4x M14 nuts to loosen the grinding motor Release the belt tension by loosening the M10 l...

Page 20: ...E0655 M6 8x12 Hexagon socked head shoulder bolt 12 9 4x BE0016 M6 Plain washer 4x BE0158 M6 Lock nut Mounting the E12634 Machine support LONG Grinding Bushhammers When working with bushhammers the nor...

Page 21: ...rs Use an Allen key to hold the bolt and tighten the NUT on 60NM NOTE Keep in mind that working with bushhammers or cutters is tough job with a lot of vibration Although the machine is built to last b...

Page 22: ...be treated and the desired profiling Regularly check the contents of the dust collector Always wear a dust mask of at least class FFP3 when emptying the dust bin or changing the dustbag bigbag Observ...

Page 23: ...of the complete machine Replacement of the diff pressure switch filter For BG 250A The time indications are based on uninterrupted operation When the indicated number of working hours is not achieved...

Page 24: ...with original Blastrac parts Check regularly to see if the diamond disc is in good condition Replace immediately the diamond disc when this is damaged or worn out Check if the flexible coupling is sti...

Page 25: ...and around the switch Do not allow condensate to flow into the equipment In case of sub zero temperatures malfunction or equipment failure may be possible due to icing Make sure that the seal surface...

Page 26: ...tor has a defect Reduce additional load Check the motor For Asbestos version Machine will not start green control light is turned OFF The differential pressure switch prevents machine from starting up...

Page 27: ...sc pressure 55 kg 55 kg 55 kg 50 kg 57 kg Noise level under load 83dB A 83dB A 83dB A 90dB A 83dB A Dust hose connection 75 mm Petrol tank capacity 1 Liter Oil tank capacity 0 6 L Suitable filter unit...

Page 28: ...e the exposure level over the total working period Identify additional safety measures to protect the operator from the effects of noise such as proper and regular maintenance of the machine and the a...

Page 29: ...info blastrac de WWW BLASTRAC DE BLASTRAC UKRAINE SALES SERVICE CENTRE Nezalezhnosti 14 of 21 07400 Brovary Tel 38 0 44 222 51 28 Fax 38 0 44 277 98 29 Email info blastrac com ua WWW BLASTRAC COM UA B...

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