Clarke COBS1 Instruction Manual

OPERATION & MAINTENANCE
INSTRUCTIONS
LS0820 - ISS 4
ORIGINAL INSTRUCTIONS
OSCILLATING BOBBIN SANDER
MODEL NO: COBS1
PART NO: 6462013

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INTRODUCTION
Thank you for purchasing this CLARKE product.
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 RECYCLING POLICY
Through 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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CONTENTS
The following items should be supplied in the carton. If any parts are missing,
do not operate until the missing parts are replaced. Failure to follow this
instruction could result in serious injury.
SAFETY SYMBOLS
1 x Bobbin Sander
1 x 13 mm Ø Sanding Sleeve
1 x 19 mm Ø Sanding Sleeve
1 x 26 mm Ø Sanding Sleeve
1 x 38 mm Ø Sanding Sleeve
1 x 51 mm Ø Sanding Sleeve
1 x 76 mm Ø Sanding Sleeve
1 x 13 mm Ø Table Insert
1 x 19 mm Ø Table Insert
1 x 26 mm Ø Table Insert
1 x 38 mm Ø Table Insert
1 x 51 mm Ø Table Insert
1 x 76 mm Ø Table Insert
1 x 19 mm (Ø) x 115 mm Sanding Bobbin
1 x 26 mm (Ø) x 115 mm Sanding Bobbin
1 x 38 mm (Ø) x 115 mm Sanding Bobbin
1 x 51 mm (Ø) x 115 mm Sanding Bobbin
1 x 76 mm (Ø) x 115 mm Sanding Bobbin
1 x Nut
1 x 15 mm Ø Spindle Washer
1 x 21 mm Ø Spindle Washer
1 x 45.8 mm Ø Spindle Washer
1 x Spanner
1 x Support Washer
Read this instruction
booklet carefully.
Wear ear
protection.
Wear eye
protection.
Wear a dust mask
that is specially
designed to filter
microscopic
particles.

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GENERAL SAFETY RULES
1. Keep work area clear
• Cluttered areas and benches
invite injuries.
2. Consider work area environment
• Do not expose tools to rain.
• Do not use tools in damp or wet
locations.
• Keep work area well lit.
• Do not use tools in the presence
of flammable liquids or gases.
3. Guard against electric shock
• Avoid body contact with
earthed or grounded surfaces
(e.g. pipes, radiators, ranges,
refrigerators).
4. Keep other persons away
• Do not let persons, especially
children, not involved in the work
touch the tool or the extension
cord and keep them away from
the work area.
5. Store idle tools
• When not in use, tools should be
stored in a dry locked-up place,
out of reach of children.
6. Use protective equipment
• Use safety glasses.
• Use face or dust mask if working
operations create dust.
7. Do not force the tool
• It will do the job better and safer
at the rate for which it was
intended.
8. Use the right tool
• Do not force small tools to do the
job of a heavy duty tool.
• Do not use tools for purposes not
intended; for example do not
use circular saws to cut tree limbs
or logs.
9. Dress properly
• Do not wear loose clothing or
jewellery, they can be caught in
moving parts.
• Non-skid footwear is
recommended when working
outdoors.
• Wear protective hair covering to
contain long hair.
10. Dust extraction equipment
• Ensure dust extraction
equipment is used.
11. Do not abuse the cord
• Never yank the cord to
disconnect it from the socket.
Keep the cord away from heat,
oil and sharp edges.
12. Secure the work
• Where possible use clamps or a
vice to hold the work. It is safer
than using your hand.
WARNING: READ ALL INSTRUCTIONS. FAILURE TO FOLLOW ALL
INSTRUCTIONS LISTED BELOW MAY RESULT IN ELECTRIC SHOCK, FIRE AND/
OR SERIOUS INJURY.

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13. Do not overreach
•Keepproperfootingand
balance at all times.
14. Maintain tools with care
• Keep cutting tools sharp and
clean for better and safer
performance.
• Follow instruction for lubricating
and changing accessories.
• Inspect tool cords periodically
and if damaged have them
repaired by an authorized
service facility.
• Inspect extension cords
periodically and replace if
damaged.
• Keep handles dry, clean and
free from oil and grease.
15. Disconnect tools
• When not in use, before servicing
and when changing accessories
such as blades, bits and cutters,
disconnect tools from the power
supply.
16. Remove adjusting keys and
wrenches
• Form the habit of checking to
see that keys and adjusting
wrenches are removed from the
tool before turning it on.
17. Avoid unintentional starting
• Ensure switch is in “off' position
when plugging in.
18. Use outdoor extension leads
• When the tool is used outdoors,
use only extension cords
intended for outdoor use and so
marked.
19. Stay alert
• Watch what you are doing, use
common sense and do not
operate the tool when you are
tired.
20. Check damaged parts
• Before further use of tool, it
should be carefully checked to
determine that it will operate
properly and perform its
intended function.
• Check for alignment of moving
parts, binding of moving parts,
breakage of parts, mounting
and any other conditions that
may affect its operation.
• A guard or other part that is
damaged should be properly
repaired or replaced by an
authorized service centre unless
otherwise indicated in this
instruction manual.
• Have defective switches
replaced by an authorized
service centre.
• Do not use the tool if the switch
does not turn it on and off.
21. Warning
• The use of any accessory or
attachment other than one
recommended in this instruction
manual may present a risk of
personal injury.
22. Have your tool repaired by a
qualified person
• This electric tool complies with
the relevant safety rules. Repairs
should only be carried out by
qualified persons using original
spare parts, otherwise this may
result in considerable danger to
the user.

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ELECTRICAL CONNECTIONS
Connect the mains lead to a standard, 230 Volt (50Hz) electrical supply
through an approved 13 amp BS 1363 plug, or a suitably fused isolator switch.
If the plug has to be changed because it is not suitable for your socket, or
because of damage, it must be removed and a replacement fitted, following
the wiring instructions shown below. The old plug must be discarded safely, as
insertion into a power socket could cause an electrical hazard.
If the colours of the wires in the power cable do not agree with the markings
on the plug.
• The BLUE wire must be
connected to the
terminal which is
marked N or coloured
black.
• The BROWN wire must
be connected to the
terminal which is
marked L or coloured
red.
AN APPROVED RESIDUAL CURRENT DEVICE (RCD) WHICH HAS A TRIPPING
CURRENT OF LESS THAN 30mA MUST BE USED.
If you are not sure, consult a qualified electrician. DO NOT try to do any repairs
This symbol indicates that this is a Class II product, and does not require
an earth connection.
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
Plug must be BS1363/A approved.
Always fit
Ensure that the outer sheath of
Neutral
(Blue)
Live
(Brown)
a 5 Amp
the cable is firmly held by the clamp
fuse.

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PARTS IDENTIFICATION
1Table 6Spanner
2 Bobbin 7 Dust Chute
3 Spindle Washer 8 Bobbins + Sanding Sleeves
4Nut 9Spindle
5 Bobbin Sander 10 Table Inserts

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ASSEMBLY
FITTING THE SANDPAPER SLEEVE ONTO THE BOBBIN
1. Fit the sandpaper sleeve on to the
bobbin as shown.
NOTE: The 13mm sanding sleeve
does not fit onto a bobbin, it
simply slides directly onto the
spindle.
PARTS STORAGE
1. The storage slots on the front are
used to store the table inserts.
2. The storage slots on the rear are
used to store the bobbins/sanding
sleeves and the spanner supplied.

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SETUP
1. Put the support washer on the
spindle.
• Grooved side must face up.
2. Slide the bobbin on to the spindle.
3. Secure the bobbin using the
correct washer, and nut supplied.
• Use the largest washer that
does not overlap the edge of
the sanding sleeve.
• Tightening the nut causes the
bobbin to expand slightly
which prevents the sanding
sleeve from sliding off of the
bobbin.
4. Put the correct table insert into
place as shown and tighten up
the nut on top of the bobbin.
• The table insert must be used at
all times. Replacement table
inserts are available from the
Clarke spare parts department.

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DUST COLLECTION
Connect a suitable dust collector to
the dust chute.
USING THE SANDER
SWITCH ON
Press the green ON button, and allow
the machine to come up to full
speed before use.
SWITCH OFF
To switch OFF, simply press the red
button.
NOTE: In the event of a power failure
the sander will switch off
automatically. The user will need to press the green ON button again to
restart.
SANDING TIPS
• Do not force the sander, allow it to work at its own pace.
• Keep a firm grip on the workpiece, the sander will have a tendency
to push the workpiece to the right.
WARNING: CONTACT WITH OR INHALATION OF DUST FROM LEAD BASED
PAINTS CAN ENDANGER THE HEALTH OF THE OPERATOR AND
BYSTANDERS, ALWAYS WEAR A SUITABLE DUST MASK WHEN USING THE
SANDER.

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MAINTENANCE
PERIODICALLY
• Keep the ventilation holes clear and free from blockages.
• Wipe the unit with a damp cloth, do not use abrasive chemicals to
clean the sander.
REPLACEMENT SANDING SLEEVES
WARNING: REMOVE THE PLUG FROM THE MAINS POWER SUPPLY BEFORE
CARRYING OUT ANY ADJUSTMENT, SERVICING OR MAINTENANCE
Part Number
6pk Fine 6462580
6pk Medium 6462582
6pk Coarse 6462584

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SPECIFICATIONS
The details and specifications contained herein, are correct at the time of going
to print. We reserve the right to change specifications without prior notice
Model Number COBS1
Operating Temperature Range 0-40°C
Bobbin Speed 2000 rpm
Oscillations per min 58
Oscillation Travel 16 mm
Sanding Table Dimensions: (Length x Width) 370 x 295 mm
Table Height 330 mm
Bonnin Length 115 mm
Max Bobbin Working Height 110 mm
Dust Extraction Outlet Diameter 38 mm
Operating Voltage and Frequency 230V @ 50Hz
Input Power @ Rated Load 450W
Sanding Drum Diameters 19, 26, 38, 51, 76 mm
Grit grades 80 grit
Sound Pressure level : LpA 76 dB
Sound Power level: LWA 89 dB
Uncertainty Factor K 3 dB
Vibration aw < 2.5 m/s²
Dimensions (L x W x H) 400 x 350 x 450 mm
Weight 11.7 kg

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EXPLODED DIAGRAM
1 Hex nut 10mm HTCOBS101 6 Lower spindle washer HTCOBS106
2 Upper spindle washer HTCOBS102 7 Cast iron table HTCOBS107
3 Sander sleeve HTCOBS103 8 Dust washer HTCOBS108
4 Rubber spindle HTCOBS104 9 Dust cover HTCOBS109
5 Throat plate HTCOBS105 10 Washer 05 HTCOBS110

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11 Spring washer 05 HTCOBS111
12 Screw 5 x 12 HTCOBS112
13 Belt HTCOBS113
14 Belt II HTCOBS114
15 Belt wheel HTCOBS115
16 Spring washer HTCOBS116
17 Tension roller assembly HTCOBS117
18 Screw 4.2 x 13 HTCOBS118
19 Orientation plate assembly HTCOBS119
20 Screw 4.2 x 22 HTCOBS120
21 Washer 06 HTCOBS121
22 Spring washer 06 HTCOBS122
23 Screw 6 x 16 HTCOBS123
24 Cord clamp HTCOBS124
25 Screw 4.2 x 15 HTCOBS125
26 Bearing 6001zz HTCOBS126
27 Spring washer HTCOBS127
28 Armature assembly HTCOBS128
29 Bearing 608zz HTCOBS129
30 Connection plate HTCOBS130
31 Field assembly HTCOBS131
32 Rear cover HTCOBS132
33 Brush holder HTCOBS133
34 Carbon brush HTCOBS134
35 Brush spring HTCOBS135
36 Cord clamp HTCOBS136
37 Washer 04 HTCOBS137
38 Screw 4.2 x 13 HTCOBS138
39 Washer 04 HTCOBS139
40 Screw 4.2 x 110 HTCOBS140
41 Screw 4.2 x 22 HTCOBS141
42 Bearing cover HTCOBS142
43 Felt HTCOBS143
44 Rubber washer HTCOBS144
45 Bearing 6203zz HTCOBS145
46 Bearing support HTCOBS146
47 Screw 4.2 x 15 HTCOBS147
48 Bearing sleeve HTCOBS148
49 Spring HTCOBS149
50 Spring washer HTCOBS150
51 Spindle washer HTCOBS151
52 Screw 4.2 x 13 HTCOBS152
53 Wheel plate HTCOBS153
54 Wheel (I) HTCOBS154
55 Spindle HTCOBS155
56 Pin HTCOBS156
57 Wheel (II) HTCOBS157
58 Bearing sleeve HTCOBS158
59 Wheel plate HTCOBS159
60 Screw 4.2 x 13 HTCOBS160
61 Screw 4.2 x 13 HTCOBS161
62 Bearing support HTCOBS162
63 Bearing 6203zz HTCOBS163
64 Rubber washer HTCOBS164
65 Felt HTCOBS165
66 Wheel Support HTCOBS166
67 Wire assembly (I) HTCOBS167
68 Wire assembly (II) HTCOBS168
69 Rectifier HTCOBS169
70 Screw 4.2 x 19 HTCOBS170
71 Wire assembly (III) HTCOBS171
72 Wire assembly (IV) HTCOBS172
73 Cord HTCOBS173
74 Cord clamp HTCOBS174
75 Switch Orientation Plate HTCOBS175
76 Housing base HTCOBS176
77 N/A HTCOBS177
78 Logo label HTCOBS178
79 Switch orientation (I) HTCOBS179
80 Switch HTCOBS180
81 Switch orientation (II) HTCOBS181
82 Switch assistant orientation HTCOBS182
83 Screw 4 x 16 HTCOBS183
84 Warning label (I) HTCOBS184
85 Cord clamp HTCOBS185
86 Screw 4.2 x 15 HTCOBS186
87 Thread HTCOBS187
88 Screw 4.2 x 1o HTCOBS188
89 Rubber foot HTCOBS189
90 Washer 06 HTCOBS190
91 Spring washer 06 HTCOBS191
92 Screw 6 x 16 HTCOBS192
93 Bottom plate HTCOBS193
94 Screw 4.2 x 13 HTCOBS194
95 Warning label (II) HTCOBS195

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DECLARATION OF CONFORMITY