Blastrac BMG-735PRO MKII User manual

Original instructions
OPERATING INSTRUCTIONS
BMG-735PRO MKII &BMG-780PRO MKII
Version 1.1

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Inspection comments
Recurring inspections / maintenance log
*Competent person
Date / Hour counter
Findings
Repairs / Cleaning
Test
on
By*
Inspection before initial operation on: __________________________________________
By: __________________________________________
Date of initial operation: __________________________________________
Serial number & Year of manufacture: __________________________ _____________

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Table of contents
Inspection comments 2
1. Introduction 4
2. Machine description 4
Control keypad 6
3. Safety 7
3.1 Work area safety 7
3.2 Electrical safety 7
3.3 Personal safety 8
3.4 Machine safety 8
3.5 Maintenance safety 9
3.6 Dust collector safety 9
3.7 Grinding safety 9
3.8 Transport safety 10
3.9 Signs on the machine 11
4. Initial operation 12
4.1 Checkpoints of electrical safety 12
4.2 Checkpoints of machine safety 12
4.3 Manual moving of the machine 12
4.4 Changing the wings 13
4.5 Before start-up 15
5. Operating 16
5.1 Switching on the machine 16
5.2 Switching off th machine 16
5.3 Operating during grinding 17
5.4 Wet grinding 17
6. Maintenance 18
6.1 Buffers 20
6.2 Control keypad 21
7. Troubleshooting 24
8. Technical data 26
Contact

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1. Introduction
Before use, operators must be provided with information, instruction and training for the use of the machine
and the substances for which it is to be used, including the safe method of removal and disposal of the
material collected. All persons who are working with or maintaining this machine must read the manual
carefully and understand it fully. In case you sell the unit, hand this manual over to the next owner.
Keep this manual always with the machine, to enable it to be referred to at any time.
Any other work not covered by this operating manual must not be carried out.
This machine is designed for industrial use by professionals. Only authorized and trained personnel may
operate this machine. This machine is not intended for use by persons (including children) with reduced
physical, sensory or mental capabilities, or lack of experience and knowledge. Blastrac offers a course on the
use of the machine in order to make the operating and maintenance personnel familiar with all elements of
the machine. Always use common sense when working with machines.
2. Machine description
The BMG-735 & 780 MKII are electrical driven planetary grinding machines. These are three headed machines
for levelling and polishing of indoor floors. The 3 planetary rotating discs are Ø 240 mm.
It can be used for dry and wet applications. The machine can be used on almost any floor to plane, to make
ready for coatings, or to remove coatings or glue residues. The machines may not be used without an
adequate dust extraction system. A specially designed Blastrac dust collection system ensures dust-free
operation of the machine and clean air at the workspace.
These machines may not be used on wood.
BMG-735PRO MKII

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BMG-780PRO MKII
1
Steer handle
9
Upper drive
2
Operating panel
10
Dust cover
3
Swing arm for dust hose
11
Frame mounting eyes
4
Electric control box
12
Lower drive
5
Tilting support
13
Grinding buffer
6
Machine frame
14
Dust floating shroud
7
Protection cover
15
Brush for shroud
8
Drive motor
16
Front support

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Control keypad
1
Power supply failure indicator
(For 230V version only)
2
Main power switch ON/OFF
3
Dust hose attachment
4
Emergency stop button
5
Control keypad
6
Lever for adjusting steering
handle
7
Fixing knob for ergonomic steer
8
Key + cord for dead mans switch
9
Tilting support
10
Integrated floor nozzle on
floating shroud
11
Main voltage indication
12
Ampere of grinding motor
13
Speed of the grinding discs
14
Grinding speed DOWN button
15
Grinding speed UP button
16
Down / Up grinding speed (by
scrolling)
17
START grinding button
18
Change the turning direction of
grinding discs button
19
STOP grinding button
20
RDY = Ready
STO = EM-Stop activated

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3. Safety Rules
Warning!
Read all safety warnings and all instructions. Failure to follow the warnings and
instructions may result in electric shock, fire, explosions and / or serious injuries.
Only authorized and trained personnel may operate this machine. This machine is not intended for use by
persons (including children) with reduced physical, sensory or mental capabilities, or lack of experience and
knowledge.
It is the responsibility of the user to analyse the surface to be treated. The surface may not contain any
substances which could pose a fire-, explosion- or health risk when treated. The user should make a risk
assessment on the basis of the information obtained about the surface to be treated and take proper
precautions for the work to be performed.
In case of any inappropriate usage, improper operation or repair, the producer shall be exempt from liability.
3.1 Work area safety
a) Do not use the machine in rain, damp or wet locations.
b) Avoid dangerous environments: do not work in the presence of explosive atmospheres, in the presence of
flammable liquids, gases or dust. Remove materials or debris that may be ignited by sparks.
c) In some cases sparks could be created by grinding.
d) The surface to be treated must be clean, make sure to remove all stones, screws etc..
Any stones, screws, bolts, pieces of wire etc. could cause serious damage if it gets inside the machine!
e) Make sure there is enough ambient light on the work area. Cluttered or dark areas invite accidents.
f) Do not use on wood.
g) Keep children and bystanders away while operating the machine. They are likely not to foresee the
potential dangers of the machine. Distractions could cause you to lose control of the machine.
h) Persons who are not operating the machine must not be permitted to stay in the surrounding area of at
least 5 meter 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) 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 situated on the surface to be treated.
l) Make sure the machine can travel over all inequalities on the surface, small inequalities like weld seams
or floor joints are no barriers for the machine.
m) Never stay in the rain with the machine.
n) Check if there are any obstacles that can snag the cables when the machine is moving.
o) Remove reinforcing steel or other objects protruding from the surface in order to prevent damage to the
machine.
p) Warning!
Make sure that the surface to be treated does not contain dangerous materials such as:
- combustible or explosive dusts or substances.
- carcinogenic or pathogenic substances.
q) Secure the work area around the machine in public areas providing an adequate safety distance from the
machine. Use a red and white safety chain and danger sign to enclose the work area.
3.2 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) Make sure that the phases and the earth wire of the extension cable(s) are connected in the same order
as the supply cable of the machine and the power supply.
c) Electrical cables must be rolled entirely off of the reels.
d) Any damage to the electric cables and/or electrical components is not permitted.
e) The voltage on the identification plate must comply with the power supply.
f) Use an electrical power supply connection with earth connection and earth leakage circuit breaker.
g) The circuit breaker of the power supply must have a ‘’D’’ characteristic. Circuit breakers with a “C” or “B”
characteristic can give problems when switching the motor on.
h) Keep the machine original; The machine is always equipped with an earthed connection, do
not change this and always use earthed cables with an earthed plug.

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i) Inspect and test the electrical components regularly. The electrical components have to satisfy with the
requirements set out in the harmonised norm EN60204-1.
j) Always call a skilled electrician or your distributor when you have questions about the safety of the
electrical components.
k) 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.
l) Always use tools that are insulated against voltages.
m) Do not abuse the cables. Never use the cables for carrying, pulling or unplugging the machine. Keep
cables away from heat, oil, sharp edges or moving parts. Damaged or entangled cables increase the risk
of electric shock.
n) Be careful with water on the treated surface. Electrical cables must not come into contact with water.
o) The main power switch on the machine must be in the “Off” position before connecting to the power
supply. (Only if there is a main switch present on the electro box.)
p) During a long standstill of the machine, pull out the main plug and cover it with plastic foil.
q) If the machine is to be operated using power from a generator, the generator must be operated in
accordance with the current legal regulations and directives in force. (this applies to the protective earth
conductor in particular) in order to ensure that all safety devices are functioning and to eliminate possible
damage to electrical components.
3.3 Personal safety
a) Always wear Personal Protective Equipment while working with the machine.
-Dust mask class FFP3 or higher
-Hearing protection
-Safety glasses with lateral protection
-Protecting gloves
-Safety shoes
b) Dress properly. Do not wear loose clothing or jewellery. Keep your hair, clothing and gloves away from
moving parts.
c) Stay alert, watch what you are doing and use common sense when operating the machine.
d) The cord of the deadman switch key should always be fastened on your arm or on to your clothing.
e) Pull out the key of the deadman switch before any inspections, adjustments and/or maintenance work is
started.
f) All persons in the proximity of the machine, must wear hearing protection and safety shoes.
g) Always seek professional medical attention immediately in case of injury.
h) All persons surrounding the machine should wear Personal Protective Equipment.
3.4 Machine safety general
a) Safety functions and operating functions must work correct.
b) No loose bolts and nuts permitted.
c) Never operate machine without the guards and/or safety devices in place.
d) Never change anything on the safety devices on the machine!
e) Do not use the machine when it is damaged.
f) Do not open or remove protective guards while driving gears are running.
g) The temperature of certain machine parts can be above 37° C.
h) The machine, especially the handle grips must be free of fats/oils and have to be dry.
i) If the length of the brushes is, due to wear, less than 5mm or they are extremely deformed, the brushes
have to be replaced. Check the Service Manual for the order numbers.
j) All repair work has to be done by qualified Blastrac personnel, this guarantees a safe and reliable
machine.
k) Always use original Blastrac spare parts, grinding disks, grinding wings and polishing pads.
This will ensure the best performance. Only original Blastrac parts meet the factory specifications and
quality. Otherwise Blastrac BV cannot guarantee the safety of the machine. The part numbers can be
found in the Service Manual.
l) Check the rotating direction of the motor before starting up.
m) 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, and rectified.
n) In the event of operational malfunctions the machine must be shut down immediately and secured!

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3.5 Maintenance safety
a) Pull out the main plug and place it in sight, before starting inspections and repairing on the machine. Pull
out the key of the dead man’s switch and keep it in your pocket. Press the Emergency shutdown button.
b) Wait for standstill of all drives before any inspections, adjustments and/or maintenance work is started.
c) Block the machine in a stable position before doing any maintenance work.
d) 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.
e) Operational safety and service life of the machine depends, among other things, on proper maintenance.
f) Prevent premature wear by keeping the machine as dust free as possible. Clean the machine for this
reason regularly with a dust collector and non-aggressive materials, especially the upper drive. Never use
a high pressure water cleaner to clean the machine.
g) It is advisable to stock all spare parts or wear parts that cannot be supplied quickly. As a rule, production
standstill periods are more expensive than the cost for the corresponding spare part.
h) Do not use any aggressive cleaning materials and use lint-free cleaning cloths.
i) To allow the user to carry out maintenance operations, the machine must be disassembled, cleaned and
inspected as far as reasonably possible, without causing hazards for the maintenance staff or other
people.
j) The suitable precautions include decontamination before disassembling the machine, adequate filtered
ventilation of the exhaust air from the room in which it is disassembled, cleaning of the maintenance area
and suitable personal protection equipment.
3.6 Dust collectors safety
a) Always use a suitable Blastrac dust collector when working dry to ensure a dust-free operation of the
machine and clean air at the workspace. Also the airflow helps to cool the machine and prevents
overheating.
b) Read the operating instructions of the dust collector before using it.
c) The dust container/bag of the dust collector must be emptied or replaced regularly. Comply with the local
waste treatment regulations considering the removed material.
d) The dust hose must be connected properly with a hose clamp and industrial tape.
e) The dust hose must be undamaged and free of obstructions.
f) Always switch on the dust collector first!
3.7 Grinding safety
a) The machine contains rotating parts, which are protected with a sliding cover. Always leave the diamond
discs on the floor while the motor is turning.
b) The flexible couplings / buffers can become worn out with use, because of this there can be higher
vibrations than normal. Check for this reason the flexible couplings / buffers for deformation and damage
before every use.
c) Do not let the machine rest on the diamond disc or coupling when it is not in use, this will cause
deformation to the flexible coupling.
d) Make sure the brush seals are in good condition, this to avoid dust escaping.
e) Make sure the diamond tools (wings / discs / pads) are not damaged or worn out.
f) Always pull out the main plug before u start changing the wings, disks or pads.
g) When mounting or removing a diamond disc; lay the machine down backwards 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.
h) For changing the disks/wings u should wear Personal Protective Equipment like a dust mask, safety
goggles, gloves, protective shoes, and close fitting protective clothing.
Use the vacuum cleaner to prevent excessive dust.
i) Caution! The grinding disks / wings will heat up during grinding, don’t risk getting burned, always wear
protective gloves when handling them.
j) The machine contains rotating parts; because of this never tilt the machine backwards with a turning
motor.
k) Be careful with the machine and pull or let down the machine slowly, big shocks can damage the
electrical parts.
l) Make sure the floating shroud is in transport mode when you transport the machine.

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3.8 Transport safety
a) Be aware of your surroundings and machine operating level. Do not side hill, do not run on steep incline,
this could cause machine to tip over.
b) The weight of the grinding machine is between 299 and 487 kg. Use a crane or lift when transporting the
machine, use the lifting eyes of the machine.
c) Before every use check the lifting eyes and welds for: deformation, damages, cracks, corrosion and wear.
d) Only lift the machine as shown in the picture below.
e) When lifting the machine from the ground, always use the lowest lifting speed. The cables must first be
tensioned at this speed; they must not be slack when the machine is lifted from the ground.
f) During hoisting make sure to be at a safe distance from the machine with the most optimal view on the
machine and working environment.
g) Never stand directly below the machine.
h) When transporting the machine do so in such a manner that damage due to the effects of the use of
force or incorrect loading and unloading is avoided.
i) The lifting eyes can also be used to fasten the machine on a pallet or during transport.
j) Always drive backwards when driving up to a ramp or grade, and forwards when driving of the ramp.
k) Chock wheels for transport and keep control handle in neutral position.
l) Don’t leave the machine unsecured on jobsites.
m) Park the machine always on a flat horizontal and levelled surface.
n) Make sure the floating shroud is in transport mode when you transport the machine.
o) Make sure the electrical cable and dust hose are disconnected.
p) Store the cleaned and dry machine in a humid free room. Protect the electrical motor from moisture, heat
dust and shocks.
q) Never use the machine for lifting persons or items.
It is not allowed to lift the machine without appropriate appliances as a lift or crane, lift the machine
with a rope on the lifting eyes as showed in imagine mentioned below.
Make sure the floating shroud is in transport mode when you transport the machine.
Transport mode
modemodemode
735PRO MKII
modemodemode
780PRO MKII
modemodemode

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3.9 Signs on the machine
The following stickers are placed on the machine. Meanings of these symbols are:
Type plate:
EU Declaration of Conformity:
! Danger Hazardous voltage in motor even when
solid state controller is OFF. Disconnect main
power before servicing motor, controller or
associated wiring.
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 in kilogram.
The year of manufacture.
The serial number of the machine.
Email address, Website, Telephone & fax number.

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4. Initial operations
Before using the machine it is important to inspect the machine.
It is not permitted to use the machine if the machine safety is not according the checkpoints below.
Before switching on the machine make sure that no-one can be endangered when the machine starts up!
4.1 Checkpoints of electrical safety
Use only extension cables for extending the main cable that are sized and marked in accordance with
the overall power consumption of the machine.
Electrical cables must be fully unwound of them reels.
No damage is permitted for electrical cables.
Use an electrical power supply connection with earth connecting.
The main switch of the machine should be put to ‘Off’ before connecting to the power supply. (Only if
there is a main switch present on the electro box.)
Make sure the power supply is in accordance with the machine specifications.
If the machine is to be operated using power from a generator, the generator must be operated in
accordance with the current legal regulations and directives in force. (This applies to the protective
earth conductor in particular) in order to ensure that all safety devices are functioning and to
eliminate possible damage to electrical components.
4.2 Checkpoints of machine safety
Safety functions and operating functions must work correct.
Check the diamond wings for damages and/or wear.
Check all screws and other fasteners for tightness. No loose bolts and/or nuts are permitted.
Check the electrical components, cables and connections for wear and/or damages.
Dust hose connection must be reliable: use hose clamps and industrial tape.
Dust hoses must be undamaged and free of obstructions
Make sure that the dust bin / big bag is empty and connected properly.
4.3 Manual moving of the machine
Put the steering handle in the upright (vertical) position, stand with one foot on the tilting support and pull on
the handgrips to tilt the machine backwards. It can now be pushed around on its wheels.
The machine should only be moved around when the dust hose, water supply and power supply cable are
disconnected.
WARNING! Always make sure all rotating parts have come to a complete standstill before moving around the
machine.
Be careful! Make sure nobodies feet get under the wheels. Wear appropriate safety shoes when you drive the
machine to or from the work area.

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4.4 Changing the wings / discs
Warning! Always wear Personal Protective Equipment!
The dust can be hazardous to the health! Wear a dustmask!
The wings can get hot! Don’t risk burning your hands! Wear protective gloves!
Make sure all moving parts of the machine have come to a complete standstill before changing the wings.
Correct position of the machine for changing tools.
Pull out the mains plug before you start
Always wear a dust mask of at least class FFP3 and gloves.
Use the vacuum cleaner in order to work as dust free as possible

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Tilt the machine back and lay down the machine so it is
laying on the tilting support underneath the electrical box.
Make sure the machine will not fall back down. A second
person can hold the handle down, to make sure the
machine will not fall back down.
If there is a risk of damaging the floor-coating when tilting
the machine back, you can place a piece of cloth, a sheet,
a thin wooden board or something similar underneath the
metal supports.
WARNING! Danger of injury.
Do not let the machine rest on thick wedges or thick
wooden beams. This can cause the machine to fall back
down!
Use the vacuum cleaner to remove excessive dust.
A tool (spatula, screwdriver) makes it easier to release the
plate off the velcro.
Put the steering handle in the upright (vertical) position,
stand with one foot on the tilting support and pull on the
handgrips to tilt the machine backwards.
Before you tilt the machine back, make sure the electrical
cable and dust hose cannot get damaged when you tilt the
machine back.
Remove the key of the dead man’s switch, press the red
stop button, and unplug the machine from the power
supply.
This is to prevent unintentional start-up of the machine.
WARNING!
This is an unstable position of the machine.
Danger of tipping if the handle is not raised.

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Removing the diamond wings
Read chapter 3 Safety first, and wear personal protective equipment.
Lay down the machine so it is laying on the metal support underneath the electrical box. Make sure
the machine will not fall back down. A second person can hold the handle down, to make sure the
machine will not fall back down.
Remove all the dust using the vacuum cleaner.
Grab the diamond wings at the place where the gap in the Diamag plate is and roll the wing over so
the wing can be taken off of the plate. (See picture below)
Mounting the diamond wings
Read chapter 3 Safety first, and wear personal protective equipment.
Lay down the machine so it is laying on the metal support underneath the electrical box. Make sure
the machine will not fall back down. A second person can hold the handle down to make sure the
machine will not fall back down.
Clean the Diamag plates using the vacuum cleaner so the diamond wings will connect well to the
plate.
Dirt between the plates and wings can be the cause of uneven grinding results.
Place the diamond wings one by one on the Diamag plates.
4.5 Before start-up
Before start-up the operating personnel must be familiar with the safety regulations given in this manual.
Put the grinding machine and the dust collector on to the surface to be processed.
Fit the appropriate diamond grinding wings that are required for this particular process. Please read
chapter 4.4 of this manual.
Connect the machine and the dust collector to the electricity supply point, these electric supply points
should be protected and equipped with an earth connection and earth leakage circuit breaker. In case
of doubt ask the local safety officer.
Check the dust hose for damages and obstructions. Make sure the dust bin of the dust collector unit is
empty. Observe the local regulations regarding waste disposal.
Connect the grinding machine and the dust collector unit with the flexible dust hose. Use hose clamps
at the connections.
Before grinding, clean the surface to be treated. There should not be any trash, stones, cloths, or oil
on the surface.
Remove all objects from the surface that can damage the machine. Remove reinforcing steel or other objects
protruding from the surface in order to prevent damage to the machine, the seals or diamond wings.

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5. Operating
When operating the BMG-735 / 780, the following additional safety instructions must be followed closely.
5.1 Switch on the machine
Turn on the dust collector before switching on the machine
and connect the dust hose to the machine (3).
Make sure the electric component box is closed.
Connect the power supply to the connector.
Turn on the main power switch (2) and check the Power
supply failure indicator (1) (For 3x230V version only).
Stand behind the machine and hold the handle tight.
Fasten the cord of the deadman switch (8) on to your arm
or fasten it on to your clothing.
Check the display (5) to make sure there are not any faults
or warnings and no EM-stop is activated (20).
RDY = Ready, STO = EM-Stop activated. STO could mean
the Emergency stop (4) or the deadman switch (8) is
activated.
Be sure that the red stop-switch (4) is turned up.
To start the machine, push the green Start button (17).
The machine will start at lowest speed of tools.
Raise the speed of the machine by scrolling the speed
regulation button (16) or Push the UP SPEED-button (15) if
necessary.
Scroll the speed regulation button (16) counter clockwise
or use the DOWN SPEED-button (14) so the machine will
turn as slow as possible.
Push the CHANGE TURNING DIRECTION-button (18) to
change from Left or Right turning.
5.2 Switch off the machine
Push the red stop-button (19) on the control panel.
Wait until the machine stops rotating.
Pull out the cord of the deadman switch (8)
Pull the power supply out of the connector.
Shut down the dust collector.
In case of emergency or operating trouble, like vibrations or strong noises, switch the machine off
immediately!
This can be done by the red stop-button (19) or the red emergency switch (4).

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5.3 Operating during grinding
This machine will always have an even grinding result because of the planetary system.
However it is advised to keep the machine constantly in movement for an optimum grinding result.
For soft floors it is recommended to work on high disc speed, for hard floors and the first steps of polishing it
is recommended to grind with low speed of the tools.
Contact our experts at Blastrac for the correct application of the different tools
and their corresponding working speeds.
Carry out grinding in parallel tracks in such way that the dust hose and electric cable do not become twisted.
The next figure shows the recommended grind paths leading away from the dust collector.
The advancing speed depends on the material of the surface to 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. Observe and obey the local waste disposal
regulations!
Make sure that no vehicles, such as forklift trucks and other equipment run over the electric cable and the
dust hose.
For soft floors it is recommended to work with hard bonded diamond tools, for hard floors it is recommended
to grind with soft bonded diamond tools.
5.4 Wet grinding
The BMG-735 / 780 can also be used for wet grinding.
-Connect the machine to the water supply. (use the water kit E09148 for grinding wet)
-Always use a clean water supply, dirty water could clog the system.
-Make sure the water supply is turned off before connecting or disconnecting to the machine.
-Be careful, the workfloor can get slippery when grinding wet.
-Keep all electrical cables and connections away from water.
IMPORTANT NOTE:
Do not use the vacuum cleaner when grinding wet!
Clean the brush-sealing directly after wet grinding. It will be very hard to clean the brush-sealing when the
dust-water mixture has dried up and hardened.
1
Dust collector
2
Dust hose and
electric cable
3
Grinding machine

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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 if all safety devices are working adequate.
Check the brush sealing for damages and/or wear.
Check the hose to the dust collector for damage and obstructions.
Clean the electrical box inside and outside.
Check the electric connections for sediments of dirt or foreign bodies.
Check the electric motors for dirt and other contaminants.
Check the conditions of the wings /discs.
Weekly
Check the buffers of the diamond plates.
Every 3 months
Clean the complete machine with a damp cloth.
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.
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.
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. However a full overhaul must be carried out at least
once a year.
Generally the grinding machines require very little special attention regarding its maintenance.
After using the machine, clean the machine with the dust collector, so there is no dust on or in the machine.
See to it that any wastes or fibre residues do not remain in the area of the grinding discs.
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. Disconnect the power supply.
Follow additional operating and maintenance of Original Equipment Manufacturers if
included during your service and maintenance work.
All repair work must to be done by qualified Blastrac personnel, this to guarantee a safe and reliable machine.

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Any guarantee on the machine is automatically void when:
Non original Blastrac parts and or diamond discs have been used
Repair work is not done by qualified Blastrac personnel
Changes, add items, or conversions are undertaken without the written permission from Blastrac.
Further is advised:
Store the cleaned and dry machine in a dry and humid free room. Protect the electrical motor from moisture,
heat, dust and shocks.
Prevent premature wear by keeping the machine as dust free as possible, for these reasons clean the
machine 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.
Store the cleaned and dry machine in a dry and humid free room. Protect the electrical motor from
moisture, heat, dust and shocks.
Work only with original Blastrac parts.
Dust in the electrical box can damage the frequency inverter; due to this the electrical box has to be cleaned
every day from inside and outside.
Clean the fans and filters from the inside of the electrobox with compressed air and a vacuum cleaner towards
the outside air.
Check regularly to see if the diamond wings are in good condition. Replace immediately when these are
damaged or worn out.

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6.1 Buffers
Check weekly if the diamond plates have too much space in the buffers.
If the diamond plate has too much space, replace complete buffer plate.
Standard the buffer plates are delivered with 4 shock absorbers, this can be changed to 8 absorbers by adding
4 extra.
Item
Part number
Description
Qty.
( x3 per
machine)
180
E10172-240MM
Buffer complete
1
181
BE0011
M8x20 hexagon socket head cap screw
3
182
E12065
Shock absorber
4 / 8
183
BE0955
M6x12 hexagon socket countersunk 10.9
8 / 16
184
BE0456
M8x16 hexagon socket countersunk
3