Clarke CONTRACTOR CHD1050 User manual

USER INSTRUCTIONS
0708
1050 WATT HAMMER DRILL
1050 WATT HAMMER DRILL
Model No: CHD1050
Part No: 6480210

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This CLARKE product is guaranteed against faulty manufacture for a
period of 12 months from the date of purchase. Please keep your receipt
as proof of purchase.
This guarantee is invalid if the product is found to have been abused or tam-
pered with in any way, or not used for the purpose for which is 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.
Thank you for purchasing this CLARKE 1050W Hammer Drill, which is designed
for light industrial use only.
Please read this instruction leaflet thoroughly and follow the instructions carefully, in
doing so you will ensure the safety of yourself and that of others around you, this will
also ensure that the 1050W Hammer Drill will give you long and satisfactory service.
Please keep these instructions in a safe place for future reference.
CLARKE GUARANTEE
Guarantee ....................................................................................................... 3
General Safety Precautions ........................................................................... 4
Additional Safety Precautions ........................................................................ 5
Electrical Connections ................................................................................... 6
Technical Specification .................................................................................. 7
Setup & Operation .......................................................................................... 8
Maintenance ................................................................................................... 9
Parts List ............................................................................................................ 9
Hand Arm Vibration Explanation .................................................................. 10
Please Note that details and specifications herein, are correct of time of going to print.
However CLARKE International reserve the right to change specifications at any time without prior notice.
Copyright CLARKE International All rights Reserved 2006.
CONTENTS
Waste electrical products should not be disposed of with household waste. Please dispose of at your local
recycling facility.
DECLARATION OF CONFORMITY
We declare that this product complies with the following directive:
98/37/EC
signed:
ENGINEERING MANAGER

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WARNING:
PLEASE READ ALL INSTRUCTIONS CAREFULLY BEFORE OPERATING
As with all machinery, there are certain hazards involved with their
operation and use. Exercising respect and caution will considerably lessen
the risk of personal injury. However, if normal safety precautions are
overlooked or ignored, personal injury to the operator or damage to
property, may result.
GENERAL SAFETY PRECAUTIONS
•ALWAYS Learn the machines applications, limitations and specific potential
hazards peculiar to it. Read and become familiar with the entire operating manual.
•ALWAYS use a face or dust mask if operation is dusty.
•ALWAYS check for damage before use , any damaged part should be checked
to ensure that it will operate properly and perform it’s intended function. Check
for alignment of moving parts, breakage of parts, mountings, and any other
condition which may effect the machines operation. Any damage should
be properly repaired or the part replaced . If in any doubt DO NOT use the
machine. Consult your local dealer.
•ALWAYS disconnect the tool/machine from the power supply before servicing
and when changing accessories.
•ALWAYS wear safety goggles, manufactured to the latest European safety
standards. Everyday glasses do not have impact resistant lenses, they are NOT
safety glasses.
•ALWAYSwear ear protectors to protect your hearing.
•ALWAYS keep work area clean. cluttered areas and benches invite accidents.
•ALWAYS ensure that adequate lighting is available. A minimum intensity of 300
lux should be provided. Ensure the lighting is placed so you will not be working
in your own shadow.
•ALWAYS keep children away. All visitors should be kept at a safe distance
from the work area, especially whilst operating the machine.
•ALWAYS maintain machine in top condition. Keep tools/machines clean for
best performance. Follow maintenance instructions.
•ALWAYS handle with extreme care, do not carry the tool/machine by it’s
electrical cable, or yank the cable to disconnect it from the power supply.
•ALWAYS concentrate on the job at hand, no matter how trivial it may seem. Be
aware that accidents are caused by carelessness due to familiarity.
•ALWAYS wear proper apparel. Loose clothing or jewellery may get caught in
moving parts. Wear protective hair covering to contain long hair.

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•ALWAYS keep your proper footing and balance at all times DO NOT over
reach. For best footing wear rubber soled footwear. Keep floor clear of oil,
scrap wood etc.
•ALWAYS use recommended accessories, the use of improper accessories could
be hazardous.
•ALWAYS remove plug from the electrical outlet when adjusting, changing parts,
or when working on the machine.
•NEVER operate the machine when under the influence of drugs, alcohol or
any medication.
•NEVER leave the machine running unattended. Turn power OFF. Do not leave
the machine until it comes to a complete stop.
•NEVER force the machine, it will do a better and safer job at the rate for which
it was designed.
•NEVER use power tools in damp or wet locations or expose them to rain. Keep
your work area well illuminated. Do NOT use in explosive atmosphere (around
paint, flammable liquids etc.). Avoid dangerous environments.
• To reduce the risk of electric shock use a suitable RCD (residual current
device).
GENERAL SAFETY PRECAUTIONS CONTINUED
ADDITIONAL PRECAUTIONS FOR POWERTOOLS
•ALWAYScheck that the drill bit is properly locked into the chuck BEFORE
starting work and that it is appropriate for the material being cut.
•ALWAYSsecure all work sufficiently using a vice or clamps. Do not use hands to
secure work as this would be extremely dangerous.
•ALWAYSswitch the machine OFF immediately the task is completed, and
remove any drill bits.
•ALWAYS check that all adjusters, chuck keys and wrenches have been
removed BEFORE turning the tool on.
•ALWAYSensure safety devices are in place and are working correctly, if not
DO NOT use the machine until rectified.
• DO NOT use the machine if the electrical cable, plug or motor are in poor
condition.
• DO NOT allow the ventilation slots in the machine to become blocked.
• DO NOT touch the drill bit immediately after use, allow time to cool.
•AVOID accidental starting, by switching off and isolating from the main
electrical supply by removing the plug from the socket when not in use.

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ELECTRICAL CONNECTIONS
This product is provided with a standard 13 amp, 230 volt (50Hz) BS1363 plug, for
connection to a standard, domestic electrical supply. Should the plug need
replacing at any time, ensure that a plug of identical specification is used.
IMPORTANT!:
If this appliance is fitted with a plug which is moulded on to the electrical cable
(i.e. non-rewireable) please note:
• The plug MUST be thrown away if it is cut from the electric cable. There is a
danger of electric shock if it is subsequently inserted into a socket outlet.
• NEVER use the plug without the fuse cover fitted.
• Should you wish to replace a detached fuse carrier, ensure that the correct
replacement is used (as indicated by marker or colour code).
• The fuse in the plug MUST be replaced with one of the same rating (13amps)
and this must be approved to BS1362.
IMPORTANT!:
If in any doubt, do not attempt any electrical repair yourself. Consult a qualified
technician.
IMPORTANT!:
Always use an approved cable extension suitable for the power rating of this tool
(see specifications), the conductor size should also be at least the same size as the
machine, or larger. When using a cable reel, ALWAYS unwind the cable completely.
WARNING:
This appliance is double insulated.
Should it ever be necessary to change the plug, the wires in the
mains lead should be wired according to the following colour code:
BLUE - NEUTRAL
BROWN - LIVE
• Connect the BLUE coloured wire to the plug terminal marked with a
letter ‘N’ or coloured BLACK.
• Connect the BROWN coloured wire to the plug terminal marked with
a letter ‘L’ or coloured RED.

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TECHNICAL SPECIFICATION
Description:
Model No: .......................................................................................... CHD1050
Part No: ............................................................................................... 6480210
Product Specification:
Typical applications: .................................. General Drilling/Masonry Drilling
Operating modes: ...........................................................Drill/Drill & Hammer
Chuck Capacity: .................................... 2mm - 13mmØ Keyless Operation
Rotational Speeds: Speed 1: ....................... 1200 RPM
Speed 2: ....................... 2800 RPM
Maximum drilling capacities: Speed 1: Wood: ............................. Ø 40mm
Steel: ............................... Ø 13mm
Concrete: ....................... Ø 20mm
Speed 2: Wood: ............................. Ø 30mm
Steel: ............................... Ø 10mm
Concrete: ....................... Ø 16mm
Impact Rating:...................................................... 19200 - 44800 (blows/min)
Duty cycle classification:.............................................................. Continuous
Product use classification: ....................................................... Light Industrial
Noise Emissions:
Sound Power Measured: Drill and Hammer Mode: ............95.0 dB L
pA
Sound Power Guaranteed: Drill and Hammer Mode: ......... 106.0 dB L Wa
Vibration Emissions:
Measured Emission:(refer to page 8 for explanation)....................... 8.3m/s
Motor:
Operating voltage and frequency: ........................................... 230V ~ 50Hz
Input Wattage @ 230V Typical load: .................................................. 1050W
Input Ampere @ 230V Typical load: ....................................................... 4.2A
Supply Cable Assembly:
Length: ...................................................................................................... 2.0M
Fuse Rating: ................................................................................................ 13A
Dimensions & Weights:
Product:(length x height x width)(mm) ................................ 356 x 213 x 100
Carton size:(length x height x width)(mm) ........................... 369 x 315 x 105
Weight: (packed) .................................................................................. 4.65Kg
Weight: (unpacked) ............................................................................. 3.39Kg
Package Contents:
Black moulded plastic carry case .............................................................. x1
Hammer drill ................................................................................................... x1
Auxiliary handle ............................................................................................. x1
Operating manual ........................................................................................ x1
Wood drill bits (Ø5.0, 6.0, & 8.0mm) ........................................... x1 Each size
Metal drill bits (Ø4.5, 5.0, & 6.0mm) ........................................... x1 Each size
Masonry drill bits (Ø6.0, 8.0, & 10.0mm) ..................................... x1 Each size

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SETUP AND OPERATION
BEFORE plugging into the mains supply briefly pull the trigger and release to ensure the drill
trigger lock is not set in the ‘lock’ position.
Using the Chuck:
To insert a drill bit, open the chuck jaws by rotating the chuck sleeve anticlockwise
until the jaws are open sufficiently to take the drill bit. Place the drill bit in the jaws of
the chuck as far as it will go. Insert the chuck key in one of the three holes in the
chuck and turn in a clockwise direction. Make sure that the head of the chuck key is
located on the cog barrel of the chuck when tightening.
Remove the chuck key before operating the drill.
To remove the bit, release the jaws by inserting the chuck key in one of the holes and
turning in an anticlockwise direction.
To Switch on:
Plug into a 13amp socket and squeeze the trigger.
Continuous Operation:
Squeeze the trigger and lock by pressing the trigger lock button, squeeze the trigger
again briefly to unlock the trigger. The motor will then stop.
Speed Selection:
The speed is varied by applying more or less pressure on the
trigger. The maximum speed may be pre-selected by turning
the variable speed control and by selecting one of the two
speeds on the speed selection knob (turn the knob until the
number is aligned with the arrow on the drills’ body).
NOTE: This operation should only be performed when the drill is
at a complete stop.
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1. Trigger
2. Variable Speed Control
3. Forward/Reverse Control
4. Trigger Lock Button
5. Speed Selection
6. Drill/Hammer Drill Selection
7. Chuck
8. Auxiliary Handle

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Forward / Reverse Selection:
Push the forward/reverse selection switch to the left hand position
marked ‘ ’ for normal rotation.
Push the forward/reverse selection switch to the right hand position
marked ‘ ’ for reverse rotation.
NOTE: This operation should only be performed when the drill is at a
complete stop .
Hammer Drill Selection:
Rotate the drill/hammer drill mode selection switch so that the
hammer symbol is aligned with the arrow on the drills body.
NOTE: This operation should only be performed when the drill is at a
complete stop.
Normal Drill Selection:
Rotate the drill/hammer drill mode selection switch so that the drill
symbol is aligned with the arrow on the drills body.
NOTE: This operation should only be performed when the drill is at a
complete stop.
Fitting and Adjusting the Auxiliary Handle:
BEFORE starting this procedure disconnect the drill from the mains
supply by removing the plug from the socket.
SETUP AND OPERATION CONTINUED
MAINTENANCE
PARTS LIST
ITEM: DESCRIPTION: PART NO:
1.Key-Less Chuck HT105001
2.Key-Less Chuck Securing Screw HT105002
3.Auxiliary Handle Assembly HT105003
WARNING: The use of spare parts or accessories, other than those supplied
by CLARKE international or one of its recognised dealers, may be
hazardous and could invalidate the guarantee.
• ALWAYS ensure the tool is isolated from the electrical supply, by switching OFF and
removing the plug from the 13 amp socket before commencing any maintenance
activities or adjustments etc.
• Clean the tool regularly, use a soft brush and or soft cleaning cloth. DO NOT use any
chemicals or harsh abrasives to clean the tool.
• At the end of work, to prevent dust deposits you should use a compressed air (max.3
bar) to clean out the ventilation holes.
• If excessive sparking or speed faults accur consult your CLARKE dealer.
Please note that the chuck is not designed to be changed. It is secured by a single centre
screw which has a LEFT HAND THREAD, and is glued into place .
Should it become necessary to change the chuck, it will be necessary to secure the old
chuck in a vice, open the jaws sufficiently to insert a cross head screwdriver. The screw
head should be struck sharply in order to break the seal before attempting to unscrew, in
a CLOCKWISE direction.

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Employers are advised to refer to the HSE publication “Guide for Employers”.
All hand held power tools vibrate to some extent, and this vibration is transmitted to the operator
via the handle, or hand used to steady the tool. Vibration from about 2 to 1500 herz is potentially
damaging and is most hazardous in the range from about 5 to 20 herz.
Operators who are regularly exposed to vibration may suffer from HandArm Vibration Syndrome
(HAVS), which includes ‘dead hand’, ‘dead finger’, and ‘white finger’. These are painful
conditions and are widespread in industries where vibrating tools are used.
The health risk depends upon the vibration level and the length of time of exposure to it……in
effect, a daily vibration dose.
Tools are tested using specialised equipment, to approximate the vibration level generated under
normal, acceptable operating conditions for the tool in question. For example, a grinder used at
45° on mild steel plate, or a sander on softwood in a horizontal plane etc.
These tests produce a value‘a’, expressed in metres per second per second, which represents the
average vibration level of all tests taken, in three axes where necessary, and a second figure ‘K’,
which represents the uncertainty factor, i.e. a value in excess of ‘a’, to which the tool could
vibrate under normal conditions. These values appear in the declaration on page 7.
HAND-ARM VIBRATION
You will note that a third value is given in the specification - the highest measured reading in a
single plane. This is the maximum level of vibration measured during testing in one of the axes,
and this should also be taken into account when making a risk assessment.
‘a’ values in excess of 2.5 m/s2are considered hazardous when used for prolonged periods. A
tool with a vibration value of 2.8 m/s2may be used for up to 8 hours (cumulative) per day,
whereas a tool with a value of 11.2 m/s2may be used for ½ hour per day only.
The graph below shows the vibration value against the maximum time the respective tool may be
used, per day.
The uncertainty factor should also be
taken into account when assessing a
risk. The two figures ‘a’and ‘K’may
be added together and the resulant
value used to assess the risk.
It should be noted that if a tool is used
under abnormal, or unusual
conditions, then the vibration level
could possibly increase significantly.
Users must always take this into
account and make their own risk
assessment, using the graph as a
reference.
Some tools with a high vibration value, such as impact wrenches, are generally used for a few
seconds at a time, therefore the cumulative time may only be in the order of a few minutes per
day. Nevertheless, the cumulative effect, particularly when added to that of other hand held
power tools that may be used, must always be taken into account when the total daily dose rate is
determined.

NOTES