Blastrac BHG-1800 User manual

OPERATING MANUAL BHG-1800
VERSION 2.0

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EC DECLARATION OF CONFORMITY
BLASTRAC B.V.
Utrechthaven12
NL - 3433 PN NIEUWEGEIN
Tel: [phone]
Fax: [phone]
[email protected]
The Netherlands
On sole responsibility we declare that this product is in conformity with the following standards and
standard documents:
EN 50 144, EN 55014, EN 61 000, IEC 60 745
According to the regulations 2006/95/EC, 89/336/EC, 98/37/EC
Model: BLASTRAC BHG-1800
Nieuwegein 02-07-2012

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Floor and surface grinder
BHG-1800
Important instructions
Important instructions and warning notices are allegorized on the machine by means of symbols:
Warning of general danger
Warning of dangerous voltage
Warning of hot surface
Danger of being crushed
Danger of being ripped or cut.
During work you should wear protection glasses, ear protectors, protective gloves and sturdy work
clothes!
Use ear protection
Wear protection glasses
Wear a helmet
Use protective gloves
Wear protective boots
Wear a dust mask
-

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Technical Specifications
Floor and surface grinder BHG-1800
Interference suppression according to: EN 55014 and EN 61000
Electrical overload protection with LED Thermal overload protection
Content of delivery
Floor and surface grinder with cup wheel, instruction manual and safety manual in blow molded
case.
Application for intended purpose
The floor and surface grinder is indented for professional use.
With an appropriate grinding wheel, the tool may be used for smoothing rough concrete, removing
mould seams, residual mud, joint fillers and tile adhesives.
Only use grinding wheels recommended by the manufacturer. These have a small weight
and a high concentricity. Using other grinding wheels can cause an overload of the
machine or damage of the bearings and put the user in danger.
Nominal voltage: 230 V
Power drain: 1800 W
Rated current: 8 A
Frequency: 50-60 Hz
Load speed: 10.000 rpm
Max. grinding Ø: 125 mm
Spindle: M 14
Protection class II
Cable length: 5 m
Dust extractor
connection: 35 mm
Weight: 5.5 kg
Dimensions: 310 x 230 x 275 mm

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Safety instructions
Safe work with the machine is only possible if you read this operating instruction
and the safety instructions completely and follow the instructions contained
strictly.
Additionally, the general safety instructions of the booklet supplied with the tool
must be observed. Prior to the first use, the user should absolve a practical
training.
If the mains cable gets damaged or cut during the use, do not touch it, but
instantly pull the plug out of the socket. Never use the tool with damaged mains
cable.
The tool must neither be wet nor used in humid environment.
Do not use the tool in an environment with danger of explosion
Do not drill into asbestos-containing materials
Modifications of the tool are prohibited
Never use the machine without dust guard. Use machine with partly removed
dust guard in corners only For other applications the dust guard must always
be closed
Always check the tool, cable and plug before use. Have damages only
repaired by specialists. Insert the plug into the socket only when the tool
switch is off.
When you work outside, the machine has to be used with a fault-current circuit breaker with
max. 30mA
The machine should only work under supervision of somebody. Plug and switch the machine off if
it is not under supervision, in case of putting up and stripping down the machine, in case of
voltage drop or when fixing or mounting an accessory
Switch the machine off if it stops for whatever reason. You avoid that it starts suddenly and not
under supervision
Don’t use the machine if a part of the housing is damaged or in case of damages on the switch,
the cable or plug
Pay attention that the speed indicated on the grinding wheel meets or is higher than the
maximum speed indicated on the machine
Grinding wheels have to be stored and used carefully according to the instructions of the
producer
Check the accessories before use. Do not use any products which are broken, cracked or
damaged in another way
Before use, make sure that the tool is correctly fixed and fastened
Let it run idle for about 30 seconds in a safe position. If considerable vibrations occur or if other
defects are recognized, switch off immediately
Always lead the mains and extension cable as well as the extraction hose to the back away from
the machine

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Power tools have to be inspected by a specialist in regular intervals
Never carry the machine at its cable
Do not touch rotating parts
Persons under 6 years of age are not allowed to use the tool
During use, the operator and other persons standing nearby have to wear suitable ear
protectors, a dust mask and protection glasses
Make sure that persons in the work space are not endangered by particles flying around
Keep the handles dry, clean and free of oil and grease
During operation, always hold the tool with both hands
Attention! The tool still runs for a little while after the machine was switched off.
For further safety instructions, please refer to the enclosure.
Electrical Connection
First check the correspondence between voltage and frequency compared with the data mentioned
on the identification plate.
Voltage differences from + 6% tot -_0 % are allowed. The grinder is made in protection class II.
Only use extension cables with a sufficient cross-section. A cross-section which is too small could
cause considerable drop in performance and an overheating of machine and cable. The tool includes
a start-up speed limiter to prevent fast expulsion fuses from unintended responding.

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Switching ON and OFF
Attention! In case of every stop of the machine or a power cut, the lock button has to be
released immediately by pressing the ON/OFF switch. So you can avoid an unintentional
restart of the machine (physical hazard).
Overload protection
To protect the user and the machine, the BHG-1800 is equipped with an electronic overload
protection: To warn the user against an overload of the machine due to too high grinding pressure,
a LED is attached to the motor housing. It does not light during idle run or at normal load. When
the unit is overloaded the LED lights red. In this case, the unit must be stress-relieved. You can
continue working after having stress-relieved and switching OFF and ON the power tool again.
Changing the cup wheel
Attention!
The cup wheel might heat up enormously during operation. You could burn your hands or
get cut or ripped by the segments. Therefore, always use protective gloves when
changing the cup wheel. Before any work on the tool is done, disconnect the plug from
the mains!
First of all, the detachable hood segment has to be removed.
The snap fit opens up and the segment is pushed forward. Now you can hold up the driving disc
between gearbox and cup wheel by using a jaw wrench. Use the face spanner to unscrew the
driving nut. Then remove the mounted cup wheel respectively mount the new one. The assembly
works the other way round! Let the machine run for a short period of time in a safe position. If the
machine does not run easily, stop working immediately. Use only original accessories!
Short time operation:
ON: OFF: Press the ON/OFF switch Release the ON/Off switch
Permanent
operation: ON: OFF: Keeping the ON/Off switch pressed, push in the arrestor button Press and release the ON/OFF switch again

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Application of cup wheels
Ø125 diamond cup wheel BG707105 Designed for soft floors / materials
BG707104 Designed for medium floors / materials
Ø125 black grinding cup wheel BG707119 Designed for extremely hard floors
(single row)
Ø125 black grinding cup wheel BG707120 Designed for extremely hard floors
(double row)
Ø125 PCD cup wheel BG707195 Designed to remove elastic materials
Dust extraction
Dust which occurs during your work is hazardous to health. That is why the BHG-1800 must be
used with a vacuum cleaner, and a dust mask has to be worn. The suitable Wet/Dry vacuum
cleaner BDC-1112 is available as accessory. It can directly be attached to the connection on the
dust hood:
Changing the brush rim: If the length of the brushes is – due to wear – smaller than 5 mm
(extreme formation of dust during grinding), the brush rim has to be replaced completely.
Therefore, remove the three fixing screws of the firm part of the dust guard and the two fixing
screws of the detachable part. Pull out the worn brush rim and replace it by a new one. Pay
attention that the fastening holes in the brush rim and the holes of the dust hood have the same
position. Screw both parts together.
Instruction for use
Switch the machine on and put it carefully on the surface you want to work on. Hold the tool with
both hands and work with circular or linear movements.
For best working results: don’t put too much pressure on the surface you want to work on.
For grinding works right into edges of the wall, one segment of the dust guard can be removed.
This allows grinding on surfaces which are usually hard to reach.
Attention! All other grinding works have to be done with the complete dust guard.

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Care and maintenance
Repairs may be executed only by appropriately qualified and experienced personnel.
After every repair the machine has to be inspected by an electric specialist.
Due to its design, the power tool needs a minimum of care and maintenance.
The following works have to be carried out or rather the component parts have to be inspected:
The power tool as well as the ventilation slots always have to be clean.
During work, please pay attention that no foreign elements get into the interior of the
machine.
In case of failure, a repair has to be carried out by an authorized service workshop.
Environmental Protection:
Raw material recycling instead of waste disposal. To avoid damages in transit, the tool is supplied in
a sturdy blow mould case. The packaging as well as the tool and its accessories are made of
recyclable materials which enable environmentally friendly and sort wise disposal by the local
reception points.
Only for EU countries:
Do not dispose of electric tools together with household waste material!! In observance of European
Directive 2002/96/EC on waste electrical and electronic equipment and its implementation in
accordance with national law, electric tools that have reached the end of their life must be collected
separately and returned to an environmentally compatible recycling facility.
Noise Emission:
The indication of noise emission is measured after DIN 45 635, p art 21.
The level of acoustic pressure on work site could exceed 85dB (A); in this case ear protectors must
be used.
The typical hand-arm vibration is below 2.5 m/s².
Measured values determined according to EN 50 144.

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Headquarter
Blastrac The Netherlands
Utrechthaven 12
NL – 3433 PN Nieuwegein
Tel – 0031 30 601 88 66
Fax – 0031 30 601 83 33
[email protected]
Blastrac Poland
Golina, Dworcowa 47a
PL – 63-200 Jarocin
Tel – 0048 627 40 41 50
Fax – 0048 627 40 41 51
[email protected]
Blastrac Italy
S.S. 10 Padana Inferiore, 41
IT – 29012 Caorso (PC)
Tel – 0039 0523 81 42 41
Fax – 0039 0523 81 42 45
[email protected]
Blastrac United Kingdom
Unit 2, Outgang Lane, Dinnington
Sheffield, South Yorkshire
GB – S25 3QY, England
Tel – 0044 1909 56 91 18
Fax – 0044 1909 56 75 70
[email protected]
Blastrac Germany
Richard Byrd Straβe 15
D – 50829 Köln (Ossendorf)
Tel – 0049 221 70 90 32 0
Fax – 0049 221 70 90 32 22
[email protected]
Blastrac Spain
Calle Copernico, 16
Nave 2
E – 28820 Coslada
Tel – 0034 91 660 10 65
Fax – 0034 91 672 72 11
[email protected]
Blastrac France (ZI)
29, Avenue des Temps Modernes
F – 86360 Chasseneuil du Poitou
Tel – 0033 549 00 49 20
Fax – 0033 549 00 49 21
[email protected]
Blastrac Ukraine
Nezalezhnosti 14, of. 21
UA – 07400 Brovary
Tel – 0038 44 222 51 28
Fax – 0038 44 277 98 29
[email protected]