Rhyas BGM4006 User manual

WET/DRY
BENCH GRINDER 250W
BGM4006
Original Instructions

2
EN
B) 1-1.5 mm
C) 1-1.5 mm
A
Fig. B Fig. C
Fig. D
2
657 43
1
Fig. A
A

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3
WET & DRY BENCH GRINDER
Thank you for buying this Rhyas product.
By doing so you now have an excellent product,
delivered by one of Europes leading suppliers.
All products delivered to you by Rhyas are
manufactured according to the highest standards
of performance and safety. As part of our
philosophy we also provide an excellent customer
service, backed by our comprehensive Warranty.
We hope you will enjoy using this product for
many years to come.
The numbers in the following text refer to the
drawing on page 2-4
Read the operating instructions carefully
before using this device. Familiarize
yourself with its functions and basic
operation. Service the device as per the
instructions to ensure that it always
functions properly. The operating
instructions and the accompanying
documentation must be kept in the
vicinity of the device.
Contents:
1. Machine data
2. Safety instructions
3. Installation
4. Operation
5. Maintenance
1. Machine data
Technical specification
Voltage 230 V~
Frequency 50 Hz
Power input 250 W S2=30 min.
No load speed 2950/min
Grinding stone dimensions Ø 150x20 (12.7) mm
Wet grinding stone dimensions Ø 200x40 (20) mm
Weight 8.5 kg
Lpa (sound pressure level) 62.6 +3 dB(A)
Lwa (acoustic power) 75.6 +3 db(A)
Vibration < 2.5 m/s2
Load factor
A load factor of S2 = 30 min (intermittent
periodic duty) means that you may operate the
motor continuously at its nominal power level
for no longer than the time stipulated on the
specifications label (30 minutes ON period).
If you fail to observe this time limit the motor will
overheat. During the OFF period the motor will
cool again to its starting temperature.
Vibration level
The vibration emission level stated in this
instruction manual has been measured in
accordance with a standardised test given in
EN 60745; it may be used to compare one tool
with another and as a preliminary assessment of
exposure to vibration when using the tool for the
applications mentioned
• using the tool for different applications, or with
different or poorly maintainted accessories,
may significantly increase the exposure level
• the times when the tool is switched off or when
it is running but not actually doing the job, may
signifi cantly reduce the exposure level
Protect yourself against the effects of
vibration by maintaining the tool and its
accessories, keeping your hands warm, and
organizing your work patterns.
Contents of packing
1 Wet & dry bench grinder
1 Sets eye shield bracket + eye shield
1 Tool rest
1 Users manual
1 Guarantee card
Check the machine, loose parts and accessories
for transport damage.
Features
Fig. A
1. On/off switch
2. Support
3. Cover glass
4. Cover glass holder
5. Screw
6. Grinding stone wet
7. Water reservoir
2. Safety instructions
In this manual and/or on the machine the following
symbols are used:
Denotes risk of personal injury, loss of
life or damage to the tool in case of
non-observance of the instructions in
this manual.

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Indicates electrical shock hazard.
Immediately unplug the plug from the
mains electricity in the case that the
cord gets damaged and during
maintenance
Keep bystanders away
Wear ear and eye protection
Special safety instructions
When using the machine for the first time
• Never use the tool without the PRCD delivered
with the tool.
• Keep water clear off the electrical parts of the
tool and away from persons in the working
area.
• If the mains cable has been damaged, it must
be replaced with a special mains cable. These
can be obtained from the manufacturer or the
manufacturer’s customer service department.
The mains cable may only be replaced by the
manufacturer, the manufacturer’s customer
service department or equally qualified
persons.
• Check the following:
• Does the voltage rating of the bench grinder
correspond to the power supply?
• Is an earthed mains power socket available?
• Are the power cord and plug in good condition
(solid, without fraying or other damage)?
• Avoid the use of long extension cords. The
extension cords you use must always be
earthed.
• A grinding wheel is a brittle toolpiece. The
stone is not resistant to knocks.
Always grind on the front edge of the grinding
wheel, and never on the side of the grinding
wheel. Never fit a cracked grinding wheel.
Replace it immediately, as the high rotational
speed could cause the stone to fly apart,
causing a serious accident.
• Always wear safety glasses when grinding.
• Never grind without the cover fitted over the
grinding wheel.
• Always fit the grinding wheel cover and tool
rest tightly, and with the correct clearance.
• Never allow more than 1-1.5 mm clearance
between tool rest and grinding wheel.
• Only use the grinding wheel for the work it was
designed for (for example sharpening tools),
and NOT for heavy construction work.
The following information must be available,
before you fit any new grinding wheel:
• Details about the manufacturer.
• Binding material.
• Dimensions.
• Permissible rotational speed.
• Never ream out the hole in a grinding wheel to
a larger diameter.
• The maximum rotational speed of the grinding
wheel should never be allowed to exceed the
maximum speed given for the wheel.
• Never use any grinding wheel that is damaged
or deformed.
• In order to be able to grind safely, the machine
must be firmly bolted to a workbench.
• The tool rest should be replaced whenever the
width of the tool rest measures less than 20 mm.
• The recommended depth of the recess in the
flange (T) is 2 mm and the diameter of the
spindle hole is 13 mm (see Fig. D).
Whenever using the machine
• Check that the switch is NOT in the ‘ON/1’
position before connecting the machine to the
power supply.
• Always keep the power cord out of the way of
the tool’s moving parts.
Immediately switch off the machine
whenever:
• The plug or power cord is defective or
damaged.
• The switch is defective.
• You smell smoke or burning insulation.
Electrical safety
When using electric machines always observe the
safety regulations applicable in your country to
reduce the risk of fire, electric shock and personal
injury. Read the following safety instructions and
also the enclosed safety instructions.
Always check that the power supply
corresponds to the voltage on the
rating plate.

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Replacing cables or plugs
Immediately throw away old cables or plugs
when they have been replaced by new ones. It is
dangerous to insert the plug of a loose cable in
the wall outlet.
Using extension cables
Only use an approved extension cable suitable
for the power input of the machine. The minimum
conductor size is 1.5 mm2. When using a cable
reel always unwind the reel completely.
3. Installation
The grinder must be firmly bolted to a workbench.
The length of the fixing bolts will depend on the
thickness of the workbench. If the workbench is
made of steel, it is advisable to use a wooden
block or plank between the grinder and the bench,
to insulate it and prevent vibration.
Mounting and adjustment of eye shield
bracket and eye shield
Fig. B
The eye shield bracket and eye shield
should only ever be assembled/
adjusted with the grinding wheel
stationary, and the machine
disconnected from the power supply.
• Mount the eyeshield bracket together with the
eye shield itself, by means of the screw (A).
• Adjust the height of the eyeshield bracket
of the eyeshield by loosening a bit screw .
The free space between the stone and the
eyeshield bracket of the eyeshield will amount
to 1 - 1,5 mm.
• Fasten well screw (A).
• Adjust the eyeshield in such a way that your
face will be protected, at the utmost.
• Use always safety glasses.
Adjusting tool rest
Fig. B
The tool rest should only be adjusted
when the grinding wheel is completely
stationary, and the machine is
disconnected from the power supply
(the wall socket).
Secure the tool rest, allowing a maximum
clearance (C) between the tool rest and the
grinding stone of 1 -1.5 mm.
Replacing the grinding stone
Fig. C
Required tools:
• 19 mm Spanner
• 8 mm Spanner
• Screwdriver
Only ever replace the grinding wheel
when the motor is at a standstill and
the power is completely disconnected.
• Remove the guards, using the above tools.
When replacing the stones, remember the
right-hand spindle is fitted with right-hand
thread, the left-hand spindle with left-hand
thread.
• Loosen the nut by means of the spanner.
Remove the stone.
• Clean the flanges. Replace one flange, with
the concave side facing the grinding stone.
Slide the new grinding stone on to the spindle.
Replace the second flange on the spindle, with
the concave side facing the grinding stone.
Tighten the nut securely, but not too tightly!
Replace the guards and adjust the tool rest.
Let the motor run for a few seconds before you
start to grind.
4. Operation
Selecting the grinding wheel
Coarse grinding wheels will in general remove
the most material, and fine grinding wheels
are used for finishing. If the surface is uneven,
begin by using a coarse grinding wheel, and
grind the workpiece until it is smooth. Next use
a fine grinding wheel to remove the grooves and
scratching left by the coarse wheel, and finish off
the workpiece.
Grinding
The grinding machine comes with one grinding
disc for dry grinding and one for wet grinding. In
principle, the dry-grinding disc is suited for corase
grinding and the wet-grinding disc for fine grinding
where it suffices to press the workpiece lightly
against the grinding stone. This grinding machine
has been especially designed for treating and
grinding tools with cutting edges such as knives,
scissors, chisels, etc. For best results, fill the
water container with tap water.

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To prevent the grinding surface from blocking up,
avoid holding wood, lead or any other soft material
or metal against the grinding wheel. To avoid
creating grooves, do not press the workpiece
too firmly on the grinding wheel. Use water to
regularly cool the workpiece being ground. Wood
chisels and the like should never be sharpened
‘blue’. Take care not to lose your grip on the
object being ground, as it may suddenly become
jammed between the tool rest and the grinding
wheel. This can cause the stone to shatter, the
motor to seize, or the workpiece to fly off, all of
which can cause injury and damage. Whenever
the machine has been in use for 30 minutes, it
should be switched off. Allow the machine to cool
down to room temperature.
Operation
• Check that the switch is in the “OFF/0” position
before connecting the machine to the power
supply.
• Press the power switch into the “ ON/1”
position to start your bench grinder.
• Always keep the power cord out of the way of
the tool’s moving parts.
5. Maintenance
Make sure that the machine is not live
when carrying out maintenance work
on the motor.
These machines have been designed to operate
over a long period of time with a minimum of
maintenance. Continuous satisfactory operation
depends upon proper machine care and regular
cleaning.
Trouble shooting
Should the machine fail to function correctly, a
number of possible causes and the appropriate
solutions are given below:
• The electric motor becomes hot
• The motor has become overloaded.
• Give the motor a chance to cool down.
• The motor is defective.
• Contact the service point.
• Machine switched on, but will not run
• There is a break in the power supply to the
machine.
• Check whether there is a break in the
power cord.
• The switch may be damaged.
• Contact the service point.
Repairs and servicing should only be
carried out by a qualified technician or
service firm.
Cleaning
Keep the ventilation slots of the machine clean
to prevent overheating of the engine. Regularly
clean the machine housing with a soft cloth,
preferably after each use. Keep the ventilation
slots free from dust and dirt. If the dirt does not
come off use a soft cloth moistened with soapy
water. Never use solvents such as petrol, alcohol,
ammonia water, etc. These solvents may damage
the plastic parts.
Faults
Should a fault occur, e.g. after wear of a part,
please contact the service address on the
warranty card. In the back of this manual you find
an exploded view showing the parts that can be
ordered.
Environment
To prevent damage during transport, the
appliance is delivered in a solid packaging which
consists largely of reusable material. Therefore
please make use of options for recycling the
packaging.
Faulty and/or discarded electrical or
electronic apparatus have to be
collected at the appropriate recycling
locations.
Warranty
The guarantee conditions can be found on the
separately enclosed guarantee card.

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Spare parts list BGM4006
Position no. Description Art. no.
1 Switch 206403
2 Support 206431
3 Cover Glass 206401
4 Cover Glass holder 206132
7 Watertank 206442
Gear 205450
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EN
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GENERAL SAFETY INSTRUCTIONS
Warning!
Read all instructions. Failure to follow all instructions listed
below may result in electric shock, fire and/or serious injury.
The term “power tool” in all of the warnings listed below
refers to your mains operated (corded) power tool or battery
operated (cordless) power tool. Save these instructions.
1) Work area
a. Keep work area clean and well lit. Cluttered and dark
areas invite accidents.
b. Do not operate power tools in explosive atmospheres,
such as in the presence of flammable liquids, gasses
or dust. Power tools create sparks which may ignite the
dust of fumes.
c. Keep children and bystanders away while operating a
power tool. Distractions can cause you to lose control.
2) Electrical safety
a. Power tool plugs must match the outlet. Never modify
the plug in any way. Do not use any adapter plugs which
earthed (grounded) power tools. Unmodified plugs and
matching outlets will reduce risk of electric shock.
b. Avoid body contact with earthed or grounded surfaces
such as pipes, radiators, ranges and refrigerators. There
is an increased risk of electric shock if your body is
earthed or grounded.
c. Do not expose power tools to rain or wet conditions.
Water entering a power tool will increase the risk of
electric shock.
d. Do not abuse the cord. Never use the cord for carrying,
pulling or unplugging the power tool. Keep cord away
from heat, oil, sharp edges or moving parts. Damaged or
entangled cords increase the risk of electric shock.
e. When operating a power tool outdoors, use an extension
cord suitable for outdoor use. Use of a cord suitable for
outdoor use reduces the risk of electric shock. Always
use tool in conjunction with a residual circuit breaker
device.
3) Personal safety
a. Stay alert, watch what you are doing and use common
sense when operating a power tool. Do not use a power
tool while you are tired or under the influence of drugs,
alcohol or medication. A moment of inattention while
operating power tools may result in serious personal
injury.
b. Use safety equipment.Always wear eye protection.
Safety equipment such as dust mask, non-skid
safety shoes, hard hat, or hearing protection used for
appropriate conditions will reduce personal injuries.
c. Avoid accidental starting. Ensure the switch is in the off
position before plugging in. Carrying power tools with
your finger on the switch or plugging in power tools that
have the switch on invites accidents.
d. Remove any adjusting key or wrench before turning
the power tool on. A wrench or a key left attached to a
rotating part of the power tool may result in personal
injury.
e. Do not overreach. Keep proper footing and balance at
all times. This enables better control of the power tool in
unexpected situations.
f. Dress properly. Do not wear loose clothing or jewellery.
Keep your hair, clothing and gloves away from moving
parts. Loose clothes, jewellery or long hair can be
caught in moving parts.
g. If devices are provided for the connection of dust
extraction and collection facilities, ensure these are
connected and properly used. Use of these devices can
reduce dust related hazards.
h. Use clamps or a vice to hold work. It’s safer than using
your hand and it frees both hands to operate tool.
4) Power tool use and care
a. Do not force the power tool. Use the correct power
tool for your application. The correct power tool will
do the job better and safer at the rate for which it was
designed.
b. Do not use the power tool if the switch does not turn it
on and off. Any power tool that cannot be controlled with
the switch is dangerous and must be repaired.
c. Disconnect the plug from the power source before
making any adjustments, changing accessories, or
storing power tools. Such preventive safety measures
reduce the risk of starting the power tool accidentally.
d. Store idle power tools out of the reach of children and
do not allow persons unfamiliar with the power tool or
these instructions to operate the power tool. Power tools
are dangerous in the hands of untrained users.
e. Maintain power tools. Check for misalignment or binding
of moving parts, breakage of parts and any other
condition that may affect the power tools operation.
If damaged, have the power tool repaired before use.
Many accidents are caused by poorly maintained power
tools.
f. Keep cutting tools sharp and clean. Properly maintained
cutting tools with sharp cutting edges are less likely to
bind and are easier to control.
g. Use the power tool, accessories and tool bits etc., in
accordance with these instructions and in the manner
intended for the particular type of power tool, taking
into account the working conditions and the work to be
performed. Use of the power tool for operations different
from intended could result in hazardous situation.

(EN) We declare under our sole responsibility that this product is in conformity with directive 2011/65/EU
of the European parliament and of the council of 9 June on the restriction of the use of certain
hazardous substances in electrical and electronic equipment is in conformity and accordance with the
following standards and regulations:
EN
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EN 55014-1, EN 55014-2-16, EN 51044-1, EN 50144-2,
EN 61000-3-2, EN 61000-3-3
2006/42/EC, 2006/95/EC, 2004/108/EC, 2002/96/EC, 2006/95/EC
Zwolle, 01-05-2014 W. Dekens
CEO Mactool Industrial BV
It is our policy to continuously improve our products and we therefore reserve the right to change the product specification
without prior notice.
Mactool Industrial BV • Lingenstraat 6 • 8028 PM • Zwolle The Netherlands
DECLARATION OF CONFORMITY
BGM4006
h. Damaged switches must be replaced at a customer
service repair centre. Do not use power tools that
cannot be switched on and off.
i. Do not leave power tools unattended while they are
switched on. Always switch off the tool and wait until it
has come to a full standstill before leaving.
j. If the mains cable has been damaged, it must be
replaced with a special mains cable. These can be
obtained from the manufacturer or the manufacturer’s
customer service department. The mains cable
may only be replaced by the manufacturer, the
manufacturer’s customer service department or equally
qualified persons.
5) Battery tool use and care
a. Ensure the switch is in the off position before inserting
battery pack. Inserting the battery pack into power tools
that have the switch on invites accidents.
b. Recharge only with the charger specified by the
manufacturer. A charger that is suitable for one type of
battery pack may create a risk of fire when used with
another battery pack.
c. Use power tools only with specifically designated
battery packs. Use of any other battery packs may
create a risk of injury and fire.
d. When battery pack is not in use, keep it away from other
metal objects like paper clips, coins, keys, nails, screws,
or other small metal objects that can make a connection
from one terminal to another. Shorting the battery
terminals together may cause burns of a fire.
e. Under abusive conditions, liquid may be ejected from
the battery; avoid contact. If contact accidentally occurs,
flush with water. If liquid contacts eyes, additionally
seek medical help. Liquid ejected from the battery may
cause irritations or burns.
6) Service
a. Please use a qualified expert who uses original
replacement parts to repair your power tool. This will
ensure proper functioning of the power tool.
b. Caution! The use of any accessories or additional tools
other than those recommended in this manual may
lead to an increased risk of injury. Only use original
replacement parts.

1405-02