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6.  Maintenance 

 
Pay attention to Chapter 3 

"Safety"

 during maintenance and repair works.  

 
Failures due to inadequate or incorrect maintenance may generate very 

high repair costs

 and long standstill 

periods of the machine. 

Regular

 maintenance therefore is imperative. 

 
Operational safety and service life of the machine depends, among other things, on proper maintenance. 
 
The following table shows recommendations about time, inspection and maintenance for the normal use of the 
machine.  
 

Operating hours/ 

time period 

Inspection points, maintenance instructions 

12 h after repairing 

Check all accessible screw connections for tight seat. 

Daily and prior to 
starting work 

Check that all safety devices working adequate. 
Check whether there is any foreign matter between the sawing blades. 
Clean the sawing blades especially in case of moist surfaces. 
Check the sawing blades, lateral axles, tools and housing for wear. 
Check the tension of the belt, stretch again if necessary. 
Check the electric connections for sediments of dirt or foreign bodies. 
Check the electric motors for dirt and other contaminants. 
Check the function of the residual current operated device.  
Check the hose connections for tightness and fixed seat. 
Make sure that the dust bin is emptied. 
Check the oil level in the hydraulic reservoir. 

Every month 

Grease the bearing. 

Annually 

Full overhaul and cleaning of the complete machine. 

 
 
The time indications are based on uninterrupted operation. When the indicated number of working hours is not 
achieved  during  the  corresponding  period,  the  period  can  be  extended.  However  a  full  overhaul  must  be 
carried out at least once a year. 
 
Due  to  different  working  conditions  it  can’t  be  foreseen  how  frequently  inspections  for  wear  check’s, 
inspection,  maintenance  and  repair  works  ought  to  be  carried  out.  Prepare  a  suitable  inspection  schedule 
considering your own working conditions and experience. 
 
Pay attention to unusual noises or strong vibrations. Check for the cause of every big change. Call a technician 
if you have doubts about the cause or when a repair without a technician seems not possible without damages. 
Only use genuine Blastrac spare parts. 
 
Our specialists will be happy to assist you with more advice. 

Prior to any repair works on the machine and its drives, secure the machine against unintentional 
switching on. Put the machine to its safety off position.

 

 

The machine is in a safe condition when it cannot generate any hazard.

 

 

Follow additional operating and maintenance of instructions of original equipment manufacturer if 
included during your service and maintenance work. 

 

Further is advised: 

Store the cleaned and dry machine in a dry and humid free room. Protect the motors from moisture, heat, 
dust and shocks. 
 
All repair work must to be done by qualified Blastrac personnel, this to guarantee a safe and reliable machine. 
 

Summary of Contents for BMC-335EHY

Page 1: ...Original instructions in English OPERATING INSTRUCTIONS BMC 335EHY GHY VERSION 2 9 ...

Page 2: ...gs Repairs Cleaning Test on By Inspection before initial operation on __________________________________________ By __________________________________________ Date of initial operation __________________________________________ Serial number Year of manufacture __________________________ _____________ ...

Page 3: ...nual moving of the machine 14 4 4 Mounting the diamond blades 15 4 5 Removing the diamond blades 17 4 6 Control device BMC 335EHY 17 4 7 Control device BMC 335GHY 19 5 Operating 21 5 1 Before starting up 21 5 2 Starting up the machine EHY version 21 Starting up the machine GHY version 22 5 3 Operating during sawing 23 5 4 Switch off the machine EHY version 24 Switch off the machine GHY version 24 ...

Page 4: ...nt a different quantity of saw blades underneath By changing the pulleys and the belt the machine can also be used as a scarifier The manufacturer will not be liable for damage resulting from incorrect usage in these cases the user assumes all risks The machine is sealed around which makes the use almost dust free when connected to an appropriate Blastrac dust collector Due to the fine adjustment ...

Page 5: ...RATOR S MANUAL should be considered a permanent part of the engine and should remain with the engine if resold BMC 335 EHY BMC 335 GHY 1 Treadle of drive system Treadle of drive system 2 Dust collector connection Dust collector connection 3 Quick lift lever Quick lift lever 4 Handwheel working depth Handwheel working depth 5 Lifting eye Lifting eye 6 Dead man switch Driving lever 7 Driving lever A...

Page 6: ...eter from the machine i Never use the machine when the surface is not clear and if there is a risk of stumbling or tripping j Remove electrical cables and dust hose s from the surface to be treated k Make sure that there are no cables or hoses in the driving direction of the machine l Make sure that there is nothing standing or situated on the surface to be treated m Make sure the machine can trav...

Page 7: ...perational malfunctions the machine must be shut down immediately and secured p Never use the machine without a suitable Blastrac dust collector 3 4 Electrical safety a Use only extension cables for extending the main cable that are sized and marked in accordance with the overall power consumption of the machine Do not use damaged extension cables b Electrical cables must be rolled entirely off of...

Page 8: ... contains poisonous carbon monoxide Avoid inhalation of exhaust gases Never run the engine in a closed garage or confined area Always wear a dust mask Breathing carbon monoxide can cause unconsciousness or death n If any fuel is spilled clean it up completely and allow petroleum vapours to dissipate before starting the engine o Make sure the fuel and oil level are correct and that the filler cap i...

Page 9: ... information regarding the hydraulic oil p Only use HV46 hydraulic oil E00481 non compatible fluids could cause damage to the unit or serious injury q At least one time during year oil from system and the filter should be replaced r Work on hydraulic equipment or operating materials may only be undertaken by a skilled hydraulic engineer or by trained persons under the guidance and supervision of a...

Page 10: ... room in which it is disassembled cleaning of the maintenance area and suitable personal protection equipment k Always read the enclosed OWNER S MANUAL of the Hatz diesel engine before operating the machine l The OWNER S MANUAL contains important information about getting the best performance and safe operation maintenance of the diesel engine m The OWNER S MANUAL should be considered a permanent ...

Page 11: ... ramp when the treadle is in upwards position Never load or unload the machine on a ramp or incline when the wheels are in the disengage mode Failure to do so could cause machine to run away damage to the machine damage to property or cause serious injury r Only lift the machine as shown in the picture below Use the existing lifting points to lift the machine NEVER use the BMC 335 as a scarifier w...

Page 12: ...t surface DANGER Rotating parts inside Keep hands clear Lock out shut down before servicing Wear a dust mask class FFP3 or higher Hearing protection is obliged Safety glasses with lateral protection are obliged CE 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 i...

Page 13: ...unctioning and to eliminate possible damage to electrical components Checkpoints of diesel engine safety GHY version Make sure the location is adequately ventilated Make sure there is a sufficient amount of fuel in the fuel tank Make sure there is a sufficient amount of engine oil in the engine Make sure no persons are located in the danger zone of the engine or machine All safety equipment is in ...

Page 14: ...he drive motors The machine can now be pushed around on its wheels Make sure that the floor is flat because the machine is uncontrolled now It is very dangerous to drive the machine on a grade or ramp when the treadle is in upwards position Never load or unload the machine on a ramp or incline when the wheels are in the disengage mode Failure to do so could cause machine to run away damage to the ...

Page 15: ... Personal Protective Equipment The dust can be hazardous to the health ALWAYS wear a dust mask ALWAYS wear protective gloves during mounting or dismounting the blades A Loosen the 4 bolts of the side plate B Remove the side plate 2 Slide the hexagon clamp bush with the stud bolts 1 over the hexagon axle until it is about 3mm from the end of the axle Tighten both bolts 2 very tight It is advisable ...

Page 16: ...108 150 35 116 35 116 100 24 125 24 125 50 12 133 12 133 For a finer sawing result Replace the normal standard Spacer ring 2 5mm E06079 by Spacer ring 1 0mm E07497 For a coarser sawing result Replace the normal standard Spacer rings 2 5mm E06079 by Spacer ring 3 0mm E07549 Clamp all diamond blades and spacer rings together by turning 2 lock nuts 5 at the end of the tap ends 6 Make sure that there ...

Page 17: ...urn both bolts 2 loose and remove the hexagon clamp bush 1 4 6 Control device BMC 335 EHY BMC 335 EHY 1 Treadle of drive system 2 Dust collector connection 3 Quick lift lever 4 Handwheel working depth 5 Lifting eye 6 Dead man switch 7 Driving lever 8 Electrical panel 9 Hydraulic pump housing 10 Sawing scarify motor ON OFF buttons 11 Control light Phase incorrect 12 Hydraulic pump motor ON OFF butt...

Page 18: ... is pulled out the machine will stop immediately 7 Driving lever The drive unit control lever is used to control the machine s drive unit The function of the drive unit control lever begins after adjusting the working depth of the machine with the quick lift You should pay attention that the drive unit control lever is locked in the neutral position before manipulating the quick lift 10 Sawing sca...

Page 19: ... Quick lift lever 4 Handwheel working depth 5 Lifting eye 6 Driving lever 7 Air filter 8 Hydraulic pump housing 9 Diesel motor 10 Ignition lock 11 Speed control lever O Position 0 I Position I II Position II A Engine temperature display B Oil pressure display C Charge control D Operating display E Earth switch ...

Page 20: ...sawing blades to saw into the surface being treated only at the required and necessary depth When the depth adjustment is correctly selected the machine will run quiet and constant 6 Driving lever The drive unit control lever is used to control the machine s drive unit The function of the drive unit control lever begins after adjusting the working depth of the machine with the quick lift You shoul...

Page 21: ...r the machine only EHY Check if both motors turn in the correct direction only EHY 5 2 Starting up the machine EHY version Turn on the dust collector Put the cord of the dead man switch around the left wrist Check if the treadle pos 1 page 17 of the drive system is down and the driving lever pos 7 page 17 is in the neutral position Start the machine by pushing first the green button of the drive m...

Page 22: ...see photo 3 and 4 Photo 3 position Photo 4 start position Insert the starting key all the way and turn to position I see photo1 page 18 Turn the key to position II see photo1 page 19 As soon as the engine is running release the starting key The starting key springs back into position I and remains in this position during operation Lock the fine adjustment so the depth cannot change during sawing T...

Page 23: ... the electric cable and the dust hose The selection of the correct advancing speed of the machine is important for a good result In the case that the surface has different characteristics e g different hardness or different coating thicknesses a uniform result can be achieved by varying the advancing speed during sawing The advancing speed depends on the material of the surface to be treated and t...

Page 24: ...arried out Switch off the machine GHY Versions up to serial number 25697B 11 2018 Pull the quick lift lever up and turn the fine adjustment until the blades do not hit the ground anymore Push the speed control lever all the way to the Stop position see photo Photo speed control lever Stop position Wait until all turning parts have reached a standstill Remove the starting key Seal the ignition lock...

Page 25: ... lever all the way to the Stop position see photo Photo speed control lever Stop position Wait until all turning parts have reached a standstill Remove the starting key Seal the ignition lock with the protective cap Switch off the dust collector Turn the earth switch into a horizontal position pos E page 19 See photos below Pay attention that all twisting and turning machine parts have reached a s...

Page 26: ...ump The engine switches off All indicator lamps go out Remove the starting key Seal the ignition lock with the protective cap Wait until all turning parts have reached a standstill Switch off the dust collector Turn the earth switch into a horizontal position pos E page 19 See photos below Pay attention that all twisting and turning machine parts have reached a standstill before inspection or main...

Page 27: ...N Engine damage from using low quality fuel The use of fuel that does not meet the specifications can lead to engine damage Only use the fuel specified in chapter 5 6 Fuel type page 25 The use of fuel that does not meet specifications requires approval by Motorenfabrik HATZ main plant 5 6 Fuel type All types of diesel fuel that meet the minimum requirements of the following specifications are suit...

Page 28: ... engine oil Unsuitable engine oil considerably reduces engine service life Only use engine oil that fulfils the specifications stipulated above CAUTION Danger of burns There is a danger of burns when working on a hot engine Wear safety gloves CAUTION Danger of injury Prolonged contact with engine oil can lead to irritation of the skin Wear safety gloves If there is contact with the skin thoroughly...

Page 29: ... 6 If the oil level is close to the min mark add engine oil to the engine 7 Remove contamination on the engine in the area of the Oil plug 2 8 Remove Oil plug 2 9 add engine oil to the max mark 10 Close Oil plug 2 11 For the specification and viscosity see chapter 5 7 Checking and refilling the engine oil 12 Reinsert the dipstick 1 all the way to pos A CAUTION Danger of later engine damage Operati...

Page 30: ...amination on the engine in the area of the dipstick 3 Pull out the dipstick 1 and clean it 4 Reinsert the dipstick and screw it tight 5 Pull out the dipstick again and check the oil level 6 If the oil level is close to the min mark add engine oil to the max mark 7 Reinsert the dipstick and screw it tight 8 For the specification and viscosity see chapter 5 7 Checking and refilling the engine oil 1 ...

Page 31: ...he bearing Annually Full overhaul and cleaning of the complete machine The time indications are based on uninterrupted operation When the indicated number of working hours is not achieved during the corresponding period the period can be extended However a full overhaul must be carried out at least once a year Due to different working conditions it can t be foreseen how frequently inspections for ...

Page 32: ...ture wear by keeping the machine as dust free as possible Clean the machine for this reason regularly with a vacuum cleaner Clean the machine every day with air and non aggressive materials Never use a high pressure water cleaner to clean the machine 6 1 Maintenance of the bearings On the left hand side there is an open bearing This bearing should be greased to keep the dust out of the bearing Wit...

Page 33: ...upply and in its safety off position Check the oil level in the hydraulic reservoir Check the hand wheel depth adjustment for smooth running Lubricate the 2 nipples under the hand wheel for depth adjustment Disassemble the drive wheel 2 by loosening the bolt 1 Remove chain guard 4 by loosening the bolt 3 Apply oil only in this section and clean up all parts in order to remove excessive oil Regular...

Page 34: ...arings If you change the height of the motor plate the tension of the belt can be adjusted Unscrew the counter nut 2 and turn the adjusting nut 3 to change the height of the motor plate and thus the belt tension Check the tension by pressing on the belt it has the correct tension if you can press it in for approximately 8 mm between 70 and 75Hz Fix the setting with the counter nut Always check the...

Page 35: ...r axle and mount the pulley with mounting bush 9 and the hexagon socket countersunk head screw 10 Apply threadlocker Loctite 243 on the thread before mounting Slide the pulley 11 over the drum axle and turn on the axle nut 12 make sure that the right tools will be used for this so the nut will not be damaged Mount the new belt 13 and tension the belt by turning the eyebolt 2 up The tension of the ...

Page 36: ...ual Read the OWNER S MANUAL of the Hatz diesel engine for the proper maintenance schedules The maintenance plan shown below is supplied with the engine It should be mounted on the engine or machine in a clearly visible location The maintenance intervals specified on the maintenance plan must be adhered to Consult the Hatz manual ...

Page 37: ...al Maintenance step check Every 8 15 operating hours or every day before starting Check the oil level Check the intake area of the combustion air Check the cooling air area Every 250 operating hours Change the engine oil Check and set the tappet clearance Clean the cooling air area Check the screw connections Clean the screen insert in the exhaust pipe Check the water separator Every 500 operating...

Page 38: ...ts Replace the tools with appropriate tools for the surface to be treated Motor does not switch on Missed phase Wrong phase Defective Component Dead man s switch is not activated Check the mains power supply and try to switch on again Adjust phase Find fault and replace defective component Follow the enclosed information of the manufacturer Diesel motor if applicable Put the key of the dead man s ...

Page 39: ...tz engine manual Oil pressure display indicator stays on or lights up Switch off the engine immediately Danger of engine damage Check the oil level Contact Hatz service if the oil level is correct Engine temperature display indicator stays on or lights up Switch off the engine immediately Danger of engine damage Engine temperature is impermissibly high Consult the Hatz engine manual ...

Page 40: ...75 mm Design and specifications are subject to change without notice by Blastrac BV IMPORTANT NOTES Noise and vibration measurements were taken during heavy operation on concrete The noise and vibration levels depend on the working depth which is in turn determined by the unevenness of the surface The impact force of the tools onto the surface is the biggest factor in both noise and vibration leve...

Page 41: ...age will be a translation of the original Old equipment contains valuable materials which are valuable for re processing The machine parts must not be thrown away in the normal household waste but should be disposed of at a suitable proper collection system e g via your communal disposal location This way the materials can be re used in an environmentally responsible manner Despite the fact that t...

Page 42: ...yrd Str 15 50829 Köln Tel 49 0 221 709032 0 Fax 49 0 221 709032 22 Email 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 BLASTRAC SPAIN SALES SERVICE CENTRE Calle del Estío 9 E 28500 Arganda del Rey Madrid Tel 34 91 660 10 65 Fax 34 91 672 72 11 Ema...

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