Bedienungsanleitung Bosch GWS 20-230 JH Professional (Seite 19 von 284) (Deutsch, Englisch, Holländisch, Dänisch, Französisch, Italienisch, Portugiesisch, Spanisch, Polnisch, Türkisch, Schwedisch, Norwegisch, Finnisch)

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20 | English

1 609 92A 0MJ | (23.4.14) Bosch Power Tools

Hand Guard

 For operations with the rubber sanding plate 20 or with

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

hand guard 18.

The hand guard 18 is fastened with the auxiliary handle 3.

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 4 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

9 and tighten with the two-pin spanner; see Section “Quick-

clamping Nut”.

 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.

A plastic part (O-ring) is fitted around

the centring collar of mounting flange 7.

If the O-ring is missing or damaged,

the mounting flange 7 must be replaced

before resuming operation.

Flap Disc

 For operations with the flap disc, always mount the

hand guard 18.

Rubber Sanding Plate

 For operations with the rubber sanding plate 20, al-

ways mount the hand guard 18.

See graphics page for the mounting sequence.

Before mounting the rubber sanding plate 20, put the 2 spac-

er discs 19 onto the grinder spindle 4.

Screw on the round nut 22 and tighten with the two-pin span-

ner.

Cup Brush/Disc Brush

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

mount the hand guard 18.

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.

Grinding Cup

 When working with the grinding cup, mount the special

protection guard 15.

The grinding cup 16 should never project further out of the

protection guard 15 than necessary for the respective grind-

ing application. Adjust the protection guard 15 accordingly to

this dimension.

See graphics page for the mounting sequence.

Screw on clamping nut 9 and tighten with two-pin spanner

17.

Quick-clamping Nut

For convenient changing of grinding tools without the use of

additional tools, you can use the quick-clamping nut 11 in-

stead of the clamping nut 9.

 The quick-clamping nut 11 may be used only for grind-

ing or cutting discs.

Use only a flawless, undamaged quick-clamping nut 11.

When screwing on, pay attention that the side of the

quick-clamping nut 11 with printing does not face the

grinding disc; the arrow must point to the index mark 27.

Lock the grinder spindle with

the spindle lock button 1. To

tighten the quick-clamping

nut, firmly turn the grinding

disc in clockwise direction.

A properly attached, undam-

aged quick-clamping nut can

be loosened by hand when

turning the knurled ring in an-

ticlockwise direction.

Never loosen a tight quick-

clamping nut with pliers. Al-

ways use the two-pin span-

ner. Insert the two-pin span-

ner as shown in the

illustration.

OBJ_BUCH-1686-003.book Page 20 Wednesday, April 23, 2014 3:36 PM

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