Panduan Bosch GWS 900-125 Professional Gerinda Sudut

Panduan

8 | English

1 609 92A 3T4 | (3.4.17) Bosch Power Tools

 Use special care when working corners, sharp edges,

etc. Avoid bouncing and snagging the accessory. Cor-

ners, sharp edges or bouncing have a tendency to snag the

rotating accessory and cause loss of control or kickback.

 Do not attach a saw chain woodcarving blade or

toothed saw blade. Such blades create frequent kickback

and loss of control.

Safety warnings specific for Grinding and Abrasive

Cutting-Off operations

 Use only wheel types that are recommended for your

power tool and the specific guard designed for the se-

lected wheel. Wheels for which the power tool was not de-

signed cannot be adequately guarded and are unsafe.

 The grinding surface of the centre depressed wheels

must be mounted below the plane of the guard lip. An

improperly mounted wheel that projects through the plane

of the guard lip cannot be adequately protected.

 The guard must be securely attached to the power tool

and positioned for maximum safety, so the least

amount of wheel is exposed towards the operator. The

guard helps to protect operator from broken wheel frag-

ments, accidental contact with wheel and sparks that

could ignite clothing.

 Wheels must be used only for recommended applica-

tions. For example: do not grind with the side of the

cut-off wheel. Abrasive cut-off wheels are intended for

peripheral grinding; side forces applied to these wheels

may cause them to shatter.

 Always use undamaged wheel flanges that are of cor-

rect size and shape for your selected wheel. Proper

wheel flanges support the wheel thus reducing the possi-

bility of wheel breakage. Flanges for cut-off wheels may be

different from grinding wheel flanges.

 Do not use worn down reinforced wheels from larger

power tools. Wheels intended for larger power tools are

not suitable for the higher speed of a smaller tool and may

burst.

Additional safety warnings specific for abrasive cutting

off operations

 Do not “jam” the cut-off wheel or apply excessive pres-

sure. Do not attempt to make an excessive depth of cut.

Overstressing the wheel increases the loading and suscep-

tibility to twisting or binding of the wheel in the cut and the

possibility of kickback or wheel breakage.

 Do not position your body in line with and behind the

rotating wheel. When the wheel, at the point of operation,

is moving away from your body, the possible kickback may

propel the spinning wheel and the power tool directly at

you.

 When wheel is binding or when interrupting a cut for

any reason, switch off the power tool and hold the pow-

er tool motionless until the wheel comes to a complete

stop. Never attempt to remove the cut-off wheel from

the cut while the wheel is in motion otherwise kickback

may occur. Investigate and take corrective action to elimi-

nate the cause of wheel binding.

 Do not restart the cutting operation in the workpiece.

Let the wheel reach full speed and carefully re-enter

the cut. The wheel may bind, walk up or kickback if the

power tool is restarted in the workpiece.

 Support panels or any oversized workpiece to minimize

the risk of wheel pinching and kickback. Large work-

pieces tend to sag under their own weight. Supports must

be placed under the workpiece near the line of cut and near

the edge of the workpiece on both sides of the wheel.

 Use extra caution when making a “pocket cut” into ex-

isting walls or other blind areas. The protruding wheel

may cut gas or water pipes, electrical wiring or objects that

can cause kickback.

Safety warnings specific for sanding operations



Do not use excessively oversized sanding disc paper.

Follow manufacturers recommendations, when select-

ing sanding paper. Larger sanding paper extending be-

yond the sanding pad presents a laceration hazard and

may cause snagging, tearing of the disc, or kickback.

Safety warnings specific for wire brushing operations

 Be aware that wire bristles are thrown by the brush

even during ordinary operation. Do not overstress the

wires by applying excessive load to the brush. The wire

bristles can easily penetrate light clothing and/or skin.

 If the use of a guard is recommended for wire brushing,

do not allow any interference of the wire wheel or

brush with the guard. Wire wheel or brush may expand in

diameter due to work load and centrifugal forces.

Additional safety warnings

Wear safety goggles.

 Use suitable detectors to determine if utility lines are

hidden in the work area or call the local utility company

for assistance. Contact with electric lines can lead to fire

and electric shock. Damaging a gas line can lead to explo-

sion. Penetrating a water line causes property damage or

may cause an electric shock.

 Release the On/Off switch and set it to the off position

when the power supply is interrupted, e. g., in case of a

power failure or when the mains plug is pulled. This pre-

vents uncontrolled restarting.

 Do not touch grinding and cutting discs before they

have cooled down. The discs can become very hot while

working.

 Secure the workpiece. A workpiece clamped with clamp-

ing devices or in a vice is held more secure than by hand.

 Products sold in GB only: Your product is fitted with a

BS 1363/A approved electric plug with internal fuse

(ASTA approved to BS 1362).

If the plug is not suitable for your socket outlets, it should

be cut off and an appropriate plug fitted in its place by an

authorised customer service agent. The replacement plug

should have the same fuse rating as the original plug.

OBJ_BUCH-2775-004.book Page 8 Monday, April 3, 2017 8:22 AM

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