Bedienungsanleitung Bosch GEX 125-1 AE Professional (Seite 16 von 173) (Deutsch, Englisch, Holländisch, Dänisch, Französisch, Italienisch, Portugiesisch, Spanisch, Polnisch, Türkisch, Schwedisch, Norwegisch, Finnisch)

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16 | English

1 609 929 S73 | (30.3.11) Bosch Power Tools

Preselecting the Orbital Stroke Rate (GEX 125-1 AE)

With the thumbwheel for preselection of the orbital stroke

rate 2, you can preselect the required orbital stroke rate, even

during operation.

The required stroke rate depends on the material and the

working conditions and can be determined through practical

testing.

After longer periods of working at low stroke rate, allow the

machine to cool down by running it for approx. 3 minutes at

maximum stroke rate with no load.

Sanding Plate Brake

An integrated sanding plate brake reduces the stroke rate

when running at no-load so that scoring is prevented when

placing the machine onto the workpiece.

If the no-load stroke rate continuously increases over the

course of time, then the sanding plate is damaged and must

be replaced or the sanding plate brake is worn. A worn

sanding plate brake must be replaced by an authorised after-

sales service agent for Bosch power tools.

Working Advice

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

plug.

f Wait until the machine has come to a standstill before

placing it down.

For fatigue-free working, the machine can be held from

above, sideways or from the front, depending on the appli-

cation. (see figure E)

Sanding Surfaces

Switch the machine on, place it with the complete sanding

surface on the surface to be worked and move the machine

with moderate pressure over the workpiece.

The removal capacity and the sanding pattern are mainly de-

termined by the selection of the sanding sheet, the preselect-

ed orbital stroke rate (GEX 125-1 AE) and the applied pres-

sure.

Only flawless sanding sheets achieve good sanding capacity

and extend the service life of the machine.

Pay attention to apply uniform sanding pressure; this increas-

es the working life of the sanding sheets.

Intensifiying the sanding pressure does not lead to an in-

crease of the sanding capacity, but to increased wear of the

machine and the sanding sheet.

A sanding sheet that has been used for metal should not be

used for other materials.

Use only original Bosch sanding accessories.

Rough Sanding

Attach a sanding sheet with coarse grain.

Apply only light pressure to the machine so that it runs at a

higher stroke rate and high material removal is achieved.

Fine Sanding

Attach a sanding sheet with fine grain.

By lightly varying the application pressure or changing the

orbital stroke rate (GEX 125-1 AE), the sanding plate stroke

rate can be reduced whereby the orbital action is maintained.

With moderate pressure, move the machine in a circular pat-

tern or alternately in lengthwise and crosswise directions

over the workpiece. Do not tilt the machine to avoid sanding

through the workpiece (e. g. when sanding veneer).

After finishing the working procedure, switch the power tool

off.

Polishing (GEX 125-1 AE)

For the polishing of weathered paint or buffing out scratches

(e.g., acrylic glass), the machine can be equipped with appro-

priate polishing accessories such as lamb’s wool bonnet, pol-

ishing felt or sponge (accessories).

Select a low stroke rate (setting 1–2) for polishing in order to

avoid excessive heating of the surface.

Apply the polish onto a somewhat smaller surface than you in-

tend to polish. Work the polishing agent in with a suitable pol-

ishing tool applying it crosswise or with circular motion and

moderate pressure.

Do not allow the polishing agent to dry out on the surface,

otherwise the surface can become damaged. Do not subject

the surface to be polished to direct sunlight.

Clean the polishing accessories regularly to ensure good

polishing results. Wash out polishing accessories with a mild

detergent and warm water; do not use paint thinner.

Maintenance and Service

Maintenance and Cleaning

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

plug.

f For safe and proper working, always keep the machine

and ventilation slots clean.

If the machine should fail despite the care taken in manufac-

turing and testing procedures, repair should be carried out by

an after-sales service centre for Bosch power tools.

In all correspondence and spare parts order, please always in-

clude the 10-digit article number given on the type plate of

the machine.

After-sales Service and Customer Assistance

Our after-sales service responds to your questions con-

cerning maintenance and repair of your product as well as

spare parts. Exploded views and information on spare parts

can also be found under:

www.bosch-pt.com

Our customer service representatives can answer your

questions concerning possible applications and adjustment

of products and accessories.

1–2 Low stroke rate

3–4 Medium stroke rate

5–6 High stroke rate

OBJ_BUCH-315-004.book Page 16 Wednesday, March 30, 2011 8:18 AM

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