Bosch GOP 12V-28 - Инструкция по эксплуатации - Страница 20

20

 | English 

1 609 92A 2LW | (16.1.17)

Bosch Power Tools

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.

Connecting the Dust Extraction (see figure A)

The dust extraction 

14

 is intended only when working with the 

sanding plate 

15

; it is not of use in combination with other 

application tools.

For sanding, always connect the dust extraction.

Remove the application tool/accessory when mounting the 
dust extraction 

14

 (accessory).

If required, assemble the parts of the dust extraction 

14

 as 

shown in the figure. Position the assembled dust extraction 
onto the machine via the tool holder 

7

. Turn the dust extrac-

tion in such a manner that the cams of the dust extraction en-
gage into the corresponding recesses on the housing. Fasten 
the dust extraction to the machine with the retaining clip 

17

as shown in the figure.

Pay attention that the felt ring 

16

 is undamaged and faces 

tightly against the sanding plate 

15

. Replace a damage felt 

ring immediately.

Depending on machine version, place a vacuum hose 

20

(accessory) either directly onto the vacuum connection 

18

 or 

cut off the old hose end, screw the extraction adapter 

19

(accessory) onto the hose end and then place it directly onto 
the vacuum connection 

18

. Connect the vacuum hose 

20

 with 

a vacuum cleaner (accessory). An overview for the connec-
tion of various vacuum cleaners can be found on the fold-out 
page.

The vacuum cleaner must be suitable for the material being 
worked.

When vacuuming dry dust that is especially detrimental to 
health or carcinogenic, use a special vacuum cleaner.

Operation

Starting Operation

Inserting the battery



Use only original Bosch lithium-ion batteries with the 

voltage listed on the nameplate of your power tool. 

Using other batteries can lead to injuries and pose a fire 
hazard.

Note: 

Use of batteries not suitable for the machine can lead to 

malfunctions of or cause damage to the power tool.

Insert the charged battery 

3

 into the handle until it can be felt 

to engage and faces flush against the handle.

Switching On and Off

To 

start

 the machine, push the On/Off switch 

1

 forward so 

that the 

“I”

 is indicated on the switch.

To 

switch off

 the machine, push the On/Off switch 

1

 toward 

the rear so that the 

“0”

 is indicated on the switch.

To save energy, only switch the power tool on when using it.

The lithium-ion battery is protected against deep discharging 
by the “Electronic Cell Protection (ECP)”. When the battery is 
empty, the machine is switched off by means of a protective 
circuit: The inserted tool no longer rotates.

Note: 

If the machine should automatically switch off because 

of a discharged or overheated battery, make sure to set the 
machine’s On/Off switch 

1

 to off. Charge the battery and al-

low it to cool down before restarting the machine. Otherwise 
the battery can become damaged.

Preselecting the Orbital Stroke Rate

With the thumbwheel for preselection of the orbital stroke 
rate 

5

, 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.

– Paint
– Varnish
– Filling compound
– Filler

For sanding off paint

coarse

40
60

For sanding primer (e. g., for removing brush dashes, 
drops of paint and paint run)

medium

80

100
120

For final sanding of primers before coating

fine

180
240
320
400

Sanding disc Material

Application

Grain size

OBJ_BUCH-2853-001.book  Page 20  Monday, January 16, 2017  1:56 PM