background image

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 Hand Arm 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 specification panel below.

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.

VIBRATION EMISSIONS

10

a’ values in excess of 2.5 m/s

2

 are considered hazardous

when used for prolonged periods.  A tool with a vibration
value of 2.8 m/s

2

 may be used for up to 8 hours

(cumulative) per day, whereas a tool with a value of
11.2 m/s

2

 may be used for ½ hour per day only.

The graph opposite 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 above 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.

MODEL No:

COS200

DESCRIPTION:

1/3 SHEET ORBITAL SANDER

Declared vibration emmission value in accordance with EN12096

Measured vibration emmission value -

 a: .............. 12.755m/s

2

Uncertainty value - 

K: ............................................... 1.5m/s

2

Highest measured reading in a single plane ............... 19.635m/s

2

Values determined according to EN28622-2

Содержание COS200

Страница 1: ...OPERATING MAINTENANCE INSTRUCTIONS 1107 1 3 SHEET ORBITAL SANDER MODEL No COS200 1 3 SHEET ORBITAL SANDER ...

Страница 2: ... ph Power Rating 150 Watts Fuse Rating 5 Amps No Load Speed 10 000 RPM Orbits min Dust Extraction Port Dia Inner Outer 31 38mm Pad Size 1 3rd Sheet Noise Level Sound Pressure Level 72 6dB A Vibration emissions measured 12 755 m s2 See notes on page 11 When disposing of this product do not dispose of with general waste It must be disposed of according to the laws governing Waste Electrical and Elec...

Страница 3: ...herefore 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 Please note that the backing pad is not covered ...

Страница 4: ...n changing accessories 5 ALWAYS wear safety goggles manufactured to the latest European Safety Standards Everyday eyeglasses do not have impact resistant lenses they are not safety glasses 6 ALWAYS keep work area clean cluttered areas and benches invite accidents 7 ALWAYS ensure that adequate lighting is available A minimum intensity of 300 lux should be provided Ensure that lighting is placed so ...

Страница 5: ...area well illuminated do not use in explosive atmosphere around paint flammable liquids etc Avoid dangerous environment ADDITIONAL PRECAUTIONS FOR ORBITAL SANDERS 1 Do not use the machine if the electric cable plug or the motor is in poor condition 2 Keep the mains cable well away from the sander and ensure an adequate electrical supply is close at hand so that the operation is not restricted by t...

Страница 6: ... a detachable fuse carrier ensure that the correct replacement is used as indicated by marking or colour code 4 Replacement fuse covers can be obtained from your local dealer or most electrical stockists FUSE RATING The fuse in the plug must be replaced with one of the same rating 5 amps and this replacement must be ASTA approved to BS1362 If in doubt consult a qualified electrician Do not attempt...

Страница 7: ... the trigger pressed then release the trigger To release the switch lock and switch OFF pull the trigger switch a second time GENERAL HINTS FOR SANDING Always use abrasive paper that is in top condition worn paper will cause damage to the base plate Please note that base plates are NOT covered by the warranty When starting ALWAYS place the sander on the work BEFORE switching ON This will prevent t...

Страница 8: ...r does not operate when switched ON Check to ensure the fuse is sound and replace if necessary If the fuse is sound or the blows repeatedly consult your CLARKE dealer MAINTENANCE Always inspect the machine before use and ensure it is in top condition Ensure all air vents are clear use compressed air to clean the machine where possible Check the cable to ensure it is sound and free from cracks bare...

Страница 9: ...ption Part No 1 ON OFF Trigger Mechanism 2 Trigger Lock 3 Base Plate HTCOS20003 4 Abrasive Paper Retaining Clip HTCOS20004 5 Dust Extraction Adapter HTCOS20005 Consult your CLARKE dealer PARTS LIST PARTS DIAGRAM 9 ...

Страница 10: ...le 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 VIBRATION EMISSIONS 10 a values in excess of 2 5 m s2 are considered hazardous when used for prolonged periods Atool with a vibration value of 2 8 m s2 may be used for up to 8 hours cumulative per day whereas a tool with a value of 11 2...

Страница 11: ...11 ...

Отзывы: