GWS 8-100角磨机说明书.pdf - 第11页

English | 11 Bosch Power Tools 1 609 92A 1 WG | (20.7 .16) Rotating the Machine Head  Before any work on the machine itself, pull the mains plug. The machine head can be rotated with respect to the machine housing in 90…

10 | English

1 609 92A 1WG | (20.7.16) Bosch Power Tools

Assembly

Mounting the Protective Devices

 Before any work on the machine itself, pull the mains

plug.

Note: After breakage of the grinding disc during operation or

damage to the holding fixtures on the protection guard/power

tool, the machine must promptly be sent to an after-sales ser-

vice agent for maintenance. For addresses, see section “Af-

ter-sales Service and Application Service”.

Protection Guard for Grinding

Place the protection guard 7 on the

spindle collar. Adapt the position of

the protection guard 7 to the re-

quirements of the work step. Lock

protection guard 7 by tightening

locking screw 8 with combination

spanner 4.

 Adjust the protection guard 7 in such a manner that

sparking is prevented in the direction of the operator.

Note: The encoding keys on the protection guard 7 ensure

that only a protection guard that fits the machine type can be

mounted.

Protection Guard for Cutting

 For cutting with bonded abrasives, always use the pro-

tection guard for cutting 13.

 Provide for sufficient dust extraction when cutting

stone.

The protection guard for cutting 13 is mounted in the same

manner as the protection guard for grinding 7.

Cutting Guide with Dust Extraction Protection Guard

The cutting guide with dust extraction protection guard 20 is

mounted in the same manner as the protection guard for

grinding 7.

Auxiliary Handle

 Operate your machine only with the auxiliary handle 5.

Screw the auxiliary handle 5 on the right or left of the machine

head depending on the working method.

Hand Guard

 For operations with the rubber sanding plate 16 or with

the cup brush/wheel brush/flap disc, always mount the

hand guard 15.

The hand guard 15 is fastened with the auxiliary handle 5.

Mounting the Grinding Tools

 Before any work on the machine itself, pull the mains

plug.

 Do not touch grinding and cutting discs before they

have cooled down. The discs can become very hot while

working.

Clean the grinder spindle 6 and all parts to be mounted.

For clamping and loosening the grinding tools, lock the grind-

er spindle with the spindle lock button 1.

 Actuate the spindle lock button only when the grinder

spindle is at a standstill. Otherwise, the machine may be-

come damaged.

Grinding/Cutting Disc

Pay attention to the dimensions of the grinding tools. The

mounting hole diameter must fit the mounting flange without

play. Do not use reducers or adapters.

When using diamond cutting discs, pay attention that the di-

rection-of-rotation arrow on the diamond cutting disc and the

direction of rotation of the machine (see direction-of-rotation

arrow on the machine head) agree.

See graphics page for the mounting sequence.

To fasten the grinding/cutting disc, screw on the clamping nut

11 and tighten it with the combination spanner 4.

 After mounting the grinding tool and before switching

on, check that the grinding tool is correctly mounted

and that it can turn freely. Make sure that the grinding

tool does not graze against the protection guard or oth-

er parts.

Flap Disc

 For operations with the flap disc, always mount the

hand guard 15.

Rubber Sanding Plate

 For operations with the rubber sanding plate 16, al-

ways mount the hand guard 15.

See graphics page for the mounting sequence.

Screw on round nut 18 and tighten it with the combination

spanner 4.

Cup Brush/Disc Brush

 For operations with the cup brush/wheel brush, always

mount the hand guard 15.

See graphics page for the mounting sequence.

The cup brush/disc brush must be able to be screwed onto

the grinder spindle until it rests firmly against the grinder

spindle flange at the end of the grinder spindle threads. Tight-

en the cup brush/disc brush with an open-end spanner.

Approved Grinding Tools

All grinding tools mentioned in these operating instructions

can be used.

The permissible speed [min

-1

] or the circumferential speed

[m/s] of the grinding tools used must at least match the values

given in the table.

Therefore, observe the permissible rotational/circumferen-

tial speed on the label of the grinding tool.

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English | 11

Bosch Power Tools 1 609 92A 1WG | (20.7.16)

Rotating the Machine Head

 Before any work on the machine itself, pull the mains

plug.

The machine head can be

rotated with respect to

the machine housing in

90° steps. In this man-

ner, the On/Off switch

can be brought into a

more convenient posi-

tion for special working

situations, e. g., for cut-

ting operations using the

cutting guide with dust

extraction protection

guard 20 or for left-hand-

ed persons.

Completely unscrew the four screws. Rotate the machine

head carefully, without removing it from the housing, to the

new position. Screw in and tighten the four screws again.

Dust/Chip Extraction

 Dust from materials such as lead-containing coatings,

some wood types, minerals and metal can be harmful to

one’s health. Touching or breathing-in the dust can cause

allergic reactions and/or lead to respiratory infections of

the user or bystanders.

Certain dust, such as oak or beech dust, is considered car-

cinogenic, especially in connection with wood-treatment

additives (chromate, wood preservative). Materials con-

taining asbestos may only be worked by specialists.

– As far as possible, use a dust extraction system suitable

for the material.

– Provide for good ventilation of the working place.

– It is recommended to wear a P2 filter-class respirator.

Observe the relevant regulations in your country for the

materials to be worked.

 Prevent dust accumulation at the workplace. Dust can

easily ignite.

Operation

Starting Operation

 Observe correct mains voltage! The voltage of the pow-

er source must agree with the voltage specified on the

nameplate of the machine. Power tools marked with

230 V can also be operated with 220 V.

 Hold power tool by insulated gripping surfaces 22 and

auxiliary handle 5 only. The accessory may contact hid-

den wiring or its own cord. Accessory contacting a “live”

wire may make exposed metal parts of the power tool “live”

and shock the operator.

When operating the machine with power from mobile genera-

tors that do not have sufficient reserve capacity or are not

equipped with suitable voltage control with starting current

amplification, loss of performance or untypical behavior can

occur upon switching on.

Please observe the suitability of the power generator being

used, particularly with regard to the mains voltage and fre-

quency.

Switching On and Off

To start the machine, first slide the lock-off button 3 to the

rear and then push the On/Off switch 2 and keep it pressed.

To switch off the machine, release the On/Off switch 2.

 Check grinding tools before using. The grinding tool

must be mounted properly and be able to move freely.

Carry out a test run for at least one minute with no load.

Do not use damaged, out-of-centre or vibrating grind-

ing tools. Damaged grinding tools can burst and cause in-

juries.

Working Advice

 Before any work on the machine itself, pull the mains

plug.

 Exercise caution when cutting slots in structural walls;

see Section “Information on Structures”.

 Clamp the workpiece if it does not remain stationary

due to its own weight.

 Do not strain the machine so heavily that it comes to a

standstill.

 After heavily straining the power tool, continue to run

it at no-load for several minutes to cool down the acces-

sory.

 Do not touch grinding and cutting discs before they

have cooled down. The discs can become very hot while

working.

 Do not use the power tool with a cut-off stand.

Rough Grinding

 Never use a cutting disc for roughing.

The best roughing results are achieved when setting the ma-

chine at an angle of 30° to 40°. Move the machine back and

forth with moderate pressure. In this manner, the workpiece

will not become too hot, does not discolour and no grooves

are formed.

max.

[mm]

D b d [min

-1

] [m/s]

100

115

11000

100

115

–

11000

M10

M14

11000

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12 | English

1 609 92A 1WG | (20.7.16) Bosch Power Tools

Flap Disc

With the flap disc (accessory), curved surfaces and profiles

can be worked.

Flap discs have a considerably higher service life, lower noise

levels and lower sanding temperatures than conventional

sanding sheets.

Cutting Metal

 For cutting with bonded abrasives, always use the pro-

tection guard for cutting 13.

When cutting, work with moderate feed, adapted to the mate-

rial being cut. Do not exert pressure onto the cutting disc, tilt

or oscillate the machine.

Do not reduce the speed of running down cutting discs by ap-

plying sideward pressure.

The machine must al-

ways work in an up-

grinding motion. Other-

wise, the danger exists

of it being pushed un-

controlled out of the

cut.

When cutting profiles and square bar, it is best to start at the

smallest cross section.

Cutting Stone

 Provide for sufficient dust extraction when cutting

stone.

 Wear a dust respirator.

 The machine may be used only for dry cutting/grinding.

For cutting stone, it is best to use a diamond cutting disc.

When using the cutting guide with dust extraction protection

guard 20, the vacuum cleaner must be approved for vacuum-

ing masonry dust. Suitable vacuum cleaners are available

from Bosch.

Switch on the machine

and place the front part

of the cutting guide on

the workpiece. Slide the

machine with moderate

feed, adapted to the ma-

terial to be worked.

For cutting especially

hard material, e. g., con-

crete with high pebble

content, the diamond

cutting disc can over-

heat and become dam-

aged as a result. This is

clearly indicated by circular sparking, rotating with the dia-

mond cutting disc.

In this case, interrupt the cutting process and allow the dia-

mond cutting disc to cool by running the machine for a short

time at maximum speed with no load.

Noticeably decreasing work progress and circular sparking

are indications of a diamond cutting disc that has become

dull. Briefly cutting into abrasive material (e.g. lime-sand

brick) can resharpen the disc again.

Information on Structures

Slots in structural walls are subject to the Standard DIN 1053

Part 1, or country-specific regulations.

These regulations are to be observed under all circumstanc-

es. Before beginning work, consult the responsible structural

engineer, architect or the construction supervisor.

Maintenance and Service

Maintenance and Cleaning

 Before any work on the machine itself, pull the mains

plug.

 For safe and proper working, always keep the machine

and ventilation slots clean.

 In extreme conditions, always use dust extraction as

far as possible. Blow out ventilation slots frequently

and install a portable residual current device (PRCD).

When working metals, conductive dust can settle in the in-

terior of the power tool. The total insulation of the power

tool can be impaired.

Please store and handle the accessory(-ies) carefully.

If the replacement of the supply cord is necessary, this has to

be done by Bosch or an authorized Bosch service agent in or-

der to avoid a safety hazard.

After-sales Service and Application Service

Our after-sales service responds to your questions concern-

ing maintenance and repair of your product as well as spare

parts. Exploded views and information on spare parts can al-

so be found under:

www.bosch-pt.com

Bosch’s application service team will gladly answer questions

concerning our products and their accessories.

In all correspondence and spare parts orders, please always

include the 10-digit article number given on the nameplate of

the product.

People’s Republic of China

China Mainland

Bosch Power Tools (China) Co., Ltd.

567, Bin Kang Road

Bin Jiang District 310052

Hangzhou, P.R.China

Service Hotline: 4008268484

Fax: (0571) 87774502

E-Mail: contact.ptcn@cn.bosch.com

www.bosch-pt.com.cn

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