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Bosch GOP 30-28 Professional Manual

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English | 23
Bosch Power Tools 1 609 92A 18M | (14.12.15)
Connecting the Dust Extraction (see figure A)
The dust extraction 8 is intended only when working with the
sanding plate 9; it is not of use in combination with other ap-
plication tools.
For sanding, always connect the dust extraction.
To mount the dust extraction 8 (accessory), remove the appli-
cation tool and the depth stop 15.
Slide the dust extraction 8 all the way over the tool holder 4
onto the collar of the power tool. Turn it to the required posi-
tion. Press shut the clamping lever 16 to fix the dust extrac-
tion.
Plug the tool sleeve 18 of the vacuum hose 19 onto the vacu-
um connection 17. Connect the vacuum hose 19 to a vacuum
cleaner (accessory). You will find an overview of connecting
to various vacuum cleaners 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
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.
Starting Operation
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.
GOP 40-30: The worklight improves visibility in the immedi-
ate work area. It is automatically switched on and off with the
power tool.
Do not look directly into the work area illumination –
your sight can be temporarily degraded!
Preselecting the Orbital Stroke Rate
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.
Working Advice
Before any work on the machine itself, pull the mains
plug.
Wait until the machine has come to a standstill before
placing it down.
Note: Do not cover off the venting slots 3 of the machine while
working, as this reduces the working life of the machine.
Operating Principle
The oscillating drive causes the application tool/accessory to
oscillate back and forth up to 20000 times per minute. This
enables precise work in the tightest of spaces.
Work with low and uniform application
pressure, otherwise, the working perfor-
mance will decline and the application tool
can become blocked.
While working, move the machine back and
forth, so that the application tool does not
heat up excessively and become blocked.
Sawing
Use only undamaged saw blades that are in perfect con-
dition. Bent or dull saw blades can break, negatively influ-
ence the cut, or lead to kickback.
When sawing light building materials, observe the stat-
utory provisions and the recommendations of the ma-
terial suppliers.
Plunge cuts may only be applied to soft materials, such
as wood, gypsum plaster boards, etc.!
Before sawing with HCS saw blades in wood, particle board,
building materials, etc., check these for foreign objects such
as nails, screws, or similar. If required, remove foreign ob-
jects or use BIM saw blades.
Separating
Note: When separating wall tiles take into consideration that
the application tools/accessories wear heavily when used for
longer periods of time.
Sanding
The removal rate and the sanding pattern are primarily deter-
mined by the choice of sanding sheet, the preset oscillation
rate and the applied pressure.
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.
For precise on-the-spot sanding of edges, corners and hard to
reach areas, it is also possible to work only with the tip or an
edge of the sanding plate.
When selectively sanding on the spot, the sanding sheet can
heat up considerably. Reduce the orbital stroke rate and the
sanding pressure, and allow the sanding sheet to cool down
regularly.
A sanding sheet that has been used for metal should not be
used for other materials.
Use only original Bosch sanding accessories.
For sanding, always connect the dust extraction.
OBJ_BUCH-2566-001.book Page 23 Monday, December 14, 2015 4:27 PM
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