Clarke METALWORKER CBG6RZ Installation and operation manual

OPERATING & MAINTENANCE
INSTRUCTIONS
ORIGINAL INSTRUCTIONS GC0117
BENCH GRINDER
MODEL NO: CBG6RZ
PART NO: 6500105

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INTRODUCTION
Thank you for purchasing this CLARKE Bench Grinder.
Before attempting to use this product, please read this manual thoroughly and
follow the instructions carefully. In doing so you will ensure the safety of yourself
and that of others around you, and you can look forward to your purchase
giving you long and satisfactory service.
GUARANTEE
This product is guaranteed against faulty manufacture for a period of 12
months from the date of purchase. Please keep your receipt which will be
required as proof of purchase.
This guarantee is invalid if the product is found to have been abused or
tampered with in any way, or not used for the purpose for which it was
intended.
Faulty goods should be returned to their place of purchase, no product can
be returned to us without prior permission.
This guarantee does not effect your statutory rights.
ENVIRONMENTAL PROTECTION
Do not dispose of this product with general household waste. All
tools, accessories and packaging should be sorted, taken to a
recycling centre and disposed of according to the laws governing
Waste Electrical and Electronic Equipment.
Through the purchase of this product, the customer is taking on the obligation
to deal with the WEEE in accordance with the WEEE regulations in relation to
the treatment, recycling & recovery and environmentally sound disposal of
the WEEE.
In effect, this means that this product must not be disposed of with general
household waste. It must be disposed of according to the laws governing
Waste Electrical and Electronic Equipment (WEEE) at a recognised disposal
facility.

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GENERAL SAFETY RULES
WORK ENVIRONMENT
1. Keep the work area clean, tidy and well lit. Cluttered and dark areas invite
accidents
2. Do not operate power tools in explosive atmospheres, such as in the
presence of flammable liquids, gases or dust. Power tools create sparks
which may ignite the dust or fumes.
3. Keep children and bystanders away while operating a power tool.
Distractions can cause you to lose control.
PERSONAL SAFETY
1. 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 personal injury.
2. Avoid accidental starting. Ensure the switch is in the off position before
plugging in. Plugging in power tools that have the switch on invites
accidents.
3. Do not overreach. Keep proper footing and balance at all times. This
enables better control of the power tool in unexpected situations.
4. 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.
5. Gloves, manufactured to the current European safety standards should be
worn when operating grinding equipment.
6. Eye protection manufactured to the current European safety standards
should be worn when operating grinding equipment. Eye protectors must
provide protection from flying particles from the front and the side.
GENERAL USE AND CARE OF POWER TOOLS
1. ALWAYS check for any damage or condition that could affect the
grinder’s operation. Any damaged part should be properly repaired.
2. NEVER use the grinder if it is defective or operating abnormally.
CAUTION: FAILURE TO FOLLOW THESE PRECAUTIONS COULD RESULT IN
PERSONAL INJURY, AND/OR DAMAGE TO PROPERTY.

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3. NEVER abuse the mains cable. Never yank the cable to disconnect it from
the socket. Keep the cable away from sharp edges/hot surfaces.
4. NEVER carry out any alterations or modifications to this product.
5. NEVER wipe the sharpener clean with solvents. Wipe plastic parts with a
soft cloth, slightly dampened with soapy water.
6. NEVER attempt any repairs yourself. If you have a problem with this product
contact your local CLARKE dealer.
7. Do not use the tool for any purpose than that described in this manual.
8. Always maintain the tool with care. Keep it clean for the best and safest
performance.
9. 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 which it was designed.
10. 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.
11. Store idle 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.
12. 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.
13. Use the power tool and accessories 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 a
hazardous situation.
ELECTRICAL SAFETY
1. Power tool plugs must match the outlet. Never modify the plug in any way.
Do not use adapter plugs with earthed (grounded) power tools. Correct
plugs and matching outlets will reduce the risk of electric shock.
2. Do not abuse the cable. Never use it for carrying, pulling or unplugging the
power tool. Keep the cable away from heat, oil, sharp edges or moving
parts. Damaged or entangled cables increase the risk of electric shock.
3. Do not expose power tools to rain or wet conditions. Water entering a
power tool will increase the risk of electric shock. If operating the power
tool in a damp location is unavoidable, use a residual current device
(RCD) protected supply.

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4. When operating a power tool outdoors, use an extension cable suitable for
outdoor use. Use of a cable suitable for outdoor use reduces the risk of
electric shock.
GRINDING STONE SAFETY
1. Check the speed of the grindstone before fitting to your grinder. Never use
a stone with a rpm speed less than the rpm speed of your grinder. See
specification.
2. The outside diameter and thickness of your accessories must be within the
capacity rating of the power tool. The correct size accessories can be
correctly guarded and controlled.
3. Never use a stone that is chipped, cracked or damaged. Fragments from
a broken or damaged grinding stone can cause serious injury. Make sure
that defective stones are destroyed and not used.
4. Bonded abrasive products are breakable and shall therefore be handled
with utmost care. The use of damaged or improperly mounted or used
abrasive products is dangerous and can cause serious injuries.
5. Always refer to the label for specified usage and observe the safety
information. Do not use for purposes other than specified.
6. Always use the correct stone for it’s intended task. Using the incorrect stone
can cause serious injury.
7. Allow the stone and tool to do the work. Never force the workpiece
against the stone as this could cause kickback and/or shatter the stone
causing serious injury.
8. Do not use separate reducing bushes or adapters to adapt large hole
abrasive wheels. Do not force a stone onto a machine or alter the size of
the arbor hole.
9. Never use a damaged grinding stone. Inspect the stone before each use
for chips, cracks or excess wear. If the tool or accessory is dropped, inspect
for damage or install a new accessory. After fitting the accessory, position
yourself away from the plane of the rotating accessory and run the tool at
full speed. damaged stones may break apart during this test.
10. Abrasive products shall be handled and transported with care. Abrasive
products shall be stored in such a manner that they are not subjected to
mechanical damage and harmful environmental influences.
BENCH GRINDER SAFETY WARNINGS
1. Hold a hand tool or blade being sharpened firmly to prevent loss of control.
2. Never install a abrasive flap wheel or sanding disc on this grinder.
3. Always replace a cracked grinding wheel immediately.

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4. Never use damaged or incorrect grindstones. The stone and retaining
fixtures were specially designed for your grinder, for optimum performance
and safety of operation. Inspect the condition of the grinding stone before
use and do not use if any damage is found.
5. Always use the tool rests to steady the workpiece, the torque of the
spinning grinding wheel may pull the workpiece from your hands.
6. ALWAYS check for damaged parts. Before further use any part that is
damaged should be carefully checked to determine if it would operate
properly and perform its intended function. Check for misalignment or
binding of moving parts, breakage of parts and any other condition that
may affect the tool's operation. A part that is damaged should be properly
repaired or replaced at an authorised service center. Following this rule will
reduce the risk of electric shock, fire or serious injury.
NOTE: Bench grinders used in industrial environments may be subject to
the requirements of The Provision and Use of Work Equipment
regulations 1992 (particularly regarding the training requirement
of The Abrasive Wheels Regulations 1970), or other legislation. If in
doubt seek advice.
Please keep these instructions in a safe place for future reference.
SAFETY SYMBOLS
The meanings of the markings and symbols on the product are shown below
Read this manual
before use and keep
in a safe place for
future reference
Wear eye protection
when using this tool.
Gloves should be
worn when grinding.
Wear dust mask.

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ELECTRICAL CONNECTIONS
Before switching the product on, make sure that the voltage of your electricity supply is
the same as that indicated on the rating plate. This product is designed to operate on
230VAC 50Hz. Connecting it to any other power source may cause damage.
This product may be fitted with a non-rewireable plug. If it is necessary to change the
fuse in the plug, the fuse cover must be refitted. If the fuse cover becomes lost or
damaged, the plug must not be used until a suitable replacement is obtained.
If the plug has to be changed because it is not suitable for your socket, or due to
damage, it should be cut off and a replacement fitted, following the wiring instructions
shown below. The old plug must be disposed of safely, as insertion into a mains socket
could cause an electrical hazard.
If the colours of the wires in the power cable of this product do not correspond with the
markings on the terminals of your plug, proceed as follows.
• The wire which is coloured Blue must be connected to the terminal which is
marked Nor coloured Black.
• The wire which is coloured Brown must be connected to the terminal which is
marked Lor coloured Red.
• The wire which is coloured Yellow and Green must be connected to the
terminal which is marked E or or coloured Green.
We strongly recommend that this machine is connected to the mains supply via a
Residual Current Device (RCD). If in any doubt, consult a qualified electrician. DO NOT
attempt any repairs yourself.
WARNING! READ THESE ELECTRICAL SAFETY INSTRUCTIONS
THOROUGHLY BEFORE CONNECTING THE PRODUCT TO THE
MAINS SUPPLY.
WARNING! THE WIRES IN THE POWER CABLE OF THIS PRODUCT
ARE COLOURED IN ACCORDANCE WITH THE FOLLOWING CODE:
BLUE = NEUTRAL BROWN = LIVE YELLOW AND GREEN =
EARTH
Plug must be BS1363/A approved.
Always fit a 13 Amp fuse.
Ensure that the outer sheath of the cable is firmly held by the clamp
Neutral
(Blue)
Live
(Brown)
Earth
(Green and Yellow)

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OVERVIEW
The items above should be supplied with the grinder. If any items are missing or
damaged, please contact the Clarke dealer where you purchased the
product.
Position the machine in good light, and fixed to a suitable workbench using
the boltholes in the machine base.
No Description No Description
A Main body with power cable C Two Spark Arrester Brackets
(each with 1 x screw, 1 x spring
washer, 1 x flat washer.)
B Two eye shields (each with 1 x
nut, 1 x bolt, 1 x spring washer, 2
x flat washers)
D Two Tool Rests (each with 2 x
screws, 2 x spring washers, 2 x
flat washers.)

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ASSEMBLY
1. Fix the tool rests, with the screws
and washers provided, as shown
in Fig.1. The tool rests are
adjustable and should be
positioned 1/16" (1.6mm) from the
grinding wheels. Ensure that the
tool rest is firmly fixed and
horizontal.
2. Assemble the spark arrester
brackets onto the wheel guards,
using the screws and washers
provided as shown in Fig 2.
3. Before fully tightening the screws,
each bracket should be adjusted
by sliding it as close to the
grinding wheels as possible,
without impairing the wheels
rotation. As the wheel wears
down with use, it will be necessary
to re-adjust the spark arrester
brackets in order to maintain a
gap between the spark arrester
and the bracket. This gap should
never be allowed to become greater than 1/8”.
4. Assemble the eye shields on to the
spark arrester brackets using the
nuts, bolts and washers supplied,
as shown in Fig.3. The angle for
the eye shields can be adjusted
to suit the operator
We recommend that your Clarke
Bench Grinder is secured to your
workbench before operation, using
the pre-drilled holes in the base. Do
not overtighten the mounting bolts as
this could damage the plastic base.

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USING YOUR GRINDER
GENERAL USE
1. To start/stop the grinder, press the ON/OFF switch and start work.
2. Press the tool blade evenly onto the stone and move the tool sideways
across the stone. Make sure that at least half the width of the tool cutting
edge comes into contact with the grinding stone at any time to avoid
damage to the stone.
3. Allow the stone to do the work. Do not apply excessive downward pressure
on the tool when grinding.
EYESHIELD AND SPARK ARRESTER BRACKET ADJUSTMENT
The see-through eye shields allow the user to see the operation clearly and to
work precisely. The eye shields can be adjusted up and down as required.
The spark arrester brackets should be adjusted so that they are as close as
possible to the grinding wheel without impairing the wheels rotation.
IMPORTANT: Even though the eye shields are fitted, you should nevertheless
wear safety goggles when operating a bench grinder.
TOOLREST ADJUSTMENT
The appropriate adjustment of the tool rests provides the operator with a
correct working angle and a firm and efficient base for working. Adjustments
can be made by loosening the mounting screws and moving the tool rest to
within 1/16”(1.6mm) from the wheel.
Due to the wear on the grinding wheel, it will be necessary to adjust the tool
rests from time to time. Always re-tighten the mounting screws once
adjustment is complete.
WARNING: FRAGMENTS FROM A BROKEN/DETACHED GRINDING WHEEL
CAN CAUSE INJURY.
WARNING: ENSURE THAT THE WORKING POSITION ADOPTED DOES NOT
CAUSE OPERATOR FATIGUE WHICH MAY LEAD TO LOSS OF CONTROL OF
THE TOOL BEING GROUND.
WARNING: THE STONE WILL CONTINUE TO ROTATE BRIEFLY AFTER THE OFF
SWITCH HAS BEEN PRESSED.

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MAINTENANCE
GENERAL MAINTENANCE
Make sure that all components are tight and secure. Always have any
damaged or worn parts repaired or replaced by qualified service personnel.
Do not attempt to repair the grinder unless you are qualified to do so.
The drive motor and bearings are sealed units and require no regular
maintenance. Should you require assistance, contact your local Clarke
service agent.
The stone will wear down with use and may well go out of true. Use a dressing
wheel or stone grader to correct the trueness and to remove worn, glazed
grains from the stone.
The stone will have a finite life expectancy, dependant upon the nature of the
work being done. Periodically, make a note of the wheel diameter and
replace your (150mm) dia wheel if it reduces to an little as (130mm) in
diameter.
INSTALLING A NEW GRINDING STONE
To renew or change the grinding wheels, proceed as follows
1. Switch off and un-plug from power supply. Disassemble outer covers, left or
right, by removing the three cover retaining nuts, bolts and washers.
2. Slacken the spark arrester bracket and tool rest mounting screws, and pull
the bracket and Tool Rest away from the wheel.
3. Hold the grinding wheel firmly and remove the nut and flange from the
shaft, noting that the left hand wheel nut has a left hand thread.
4. Take off the used wheel and replace with the new one, ensuring:
• the paper blotters are in place either side of the wheel.
• that there is a good balanced rotation of the grinding wheel, and
• you do not overtighten the wheel nut.
5. Re-adjust the tool rest and spark arrester brackets as described above.
6. Switch the machine on and allow it to rotate freely for at least one minute.
DRESSING A NEW STONE
New grinding stones are frequently not true or in time can become grooved,
glazed (built-up), out of round or otherwise mis-shapen. To correct these
defects, a grinding stone dresser is available from your Clarke dealer.
• ET125 Grinding Wheel Dresser - Part No:1700225

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• Replacement Dresser Wheel - Part No:1700230
• ET154 ½Carat Diamond Tip Wheel Dresser - part No:1700329
1. If the grinding stone is new, allow it to spin for a minute with no load. Check
that it is spinning straight and true. If not, it will require dressing before use.
2. Stand to the side of the stone and hold the dresser handle firmly. Place the
dresser on the tool support so that its wheels can move freely (i.e, the
exposed part of the wheel should be facing up). Run the stone and apply
the dresser to the surface of the stone.
CLEANING & STORAGE
Clean the exterior the machine if required using a mild detergent or mild
solvent. Never immerse the machine in water. To reduce any fire hazard, keep
any cooling vents in the grinder free of debris.
If not bolted to a workbench, store the grinder in a clean, dry location, out of
reach of children.
SPECIFICATIONS
Feature Value
Weight 9 kg
Grinding Stone Dimensions (D x T) 150 x 20 mm (12.7 mm bore)
Rated Voltage / Frequency 230 V / 50 Hz
Motor Wattage 210 W
No Load Speed 2800 rpm
Duty Cycle Classification 5 minutes in any 10 minute period

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DECLARATION OF CONFORMITY

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COMPONENT PARTS DIAGRAM

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COMPONENT PARTS LIST
No Description Part No No Description Part No
1 Bolt HT6481901 20 Capacitor HT6481920
2 Washer HT6481902 21 Screw 3040528
3Outer Cover LH HT6481903 22 Spring Washer 3040582
3A Outer Cover RH HT6481903A 23 Flat Washer 3044576
4 Wheel Locking
Nut LH
HT6481904 24 Tool Rest LH HT6481924
4A Wheel Locking
Nut RH
HT6481904A 24A Tool Rest RH HT6481924
A
5 Wheel Retaining
Flange
HT6481905 25 Screw HT6481925
7 6” Grinding Wheel
(coarse)
6501088 26 Spring Washer HT6481926
7A 6” Grinding Wheel
(medium)
6501089 27 Bearing HT6481927
7B 6” Grinding Wheel
(fine)
6501135 28 Main Body End
Cover
HT6481928
8 Middle Ring HT6481908 29 Rotor/ shaft HT6481929
9 Screw HT6481909 30 Stator/Body HT6481930
10 Spring Washer HT6481910 32 Base HT6481932
11 Inner Cover LH HT6481911 33 Bottom Plate HT6481933
11A Inner Cover RH HT6481911A 34 Switch Assembly HT6481934
14 Eye Shield Bracket HT6481914 35 Rubber Foot HT6481935
15 Eye Shield HT6481915 38 Screw HT6481936
16 Spring Washer HT6481916 39 Washer HT6481939
17 Nut HT6481917 40 Capacitor bracket HT6481940
18 Power Cable HT5481918 41 Washer HT6481941
19 Cable Clamp HT5481919 42 Nut HT6481942