Changing The Tool; Dust/Chip Extraction - Bosch GBH 4-32 DFR Professional Originalbetriebsanleitung

Changing the Tool

The dust protection cap (4) largely prevents the penetration
of drilling dust into the tool holder during operation. When
inserting the tool, make sure that the dust protection cap (4)
does not become damaged.
Replace a damaged dust protection cap immediately.
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It is recommended that you have use an after-sales
service for this.
Changing the tool (SDS plus)
Inserting SDS-plus application tools (see figure B)
The SDS-plus drill chuck enables you to change the applica-
tion tool easily and conveniently without needing to use ad-
ditional tools.
– Clean and lightly grease the insertion end of the applica-
tion tool.
– Insert the application tool into the tool holder while turn-
ing it until it locks automatically.
– Check the latching by pulling the tool.
As a requirement of the system, the SDS-plus application
tool can move freely. This causes a certain radial run-out at
no-load, which has no effect on the accuracy of the drill hole,
as the drill bit centres itself upon drilling.
Removing SDS-plus application tools (see figure C)
– Push the locking sleeve (5) back and remove the applica-
tion tool.
Changing the keyless quick-change chuck
Inserting the application tool (see figure D)
Note: Application tools that do not have SDS plus must not
be used for hammer drilling or chiselling. Tools without SDS
plus and their drill chucks are damaged by hammer drilling
or chiselling.
– Insert the keyless quick-change chuck (1).
– Hold the retaining ring (16) of the keyless quick-change
chuck firmly in place. Open the tool holder by turning the
front sleeve (15) in the direction of the RELEASE, OFF
symbol.
– Insert the application tool into the keyless quick-change
chuck (1). Hold the retaining ring of the keyless quick-
change chuck (16) in place and turn the front sleeve (15)
in the direction of the GRIP, ON symbol.
– Check that it is seated securely by pulling on the tool.
Note: If the tool holder was unscrewed all the way, a scrap-
ing sound may be heard while retightening the tool holder
and it may not fully tighten.
In this case, turn the front sleeve (15) in the opposite direc-
tion to the arrow by one full turn. This will allow the tool
holder to be fully tightened.
– Turn the impact/mode selector switch (7) to the "drilling"
position.
Removing the application tool (see figure D)
– Hold the retaining ring (16) of the keyless quick-change
chuck firmly in place. Open the tool holder by turning the
front sleeve (15) in the direction of the RELEASE, OFF
symbol.
– Remove the application tool.
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 carci-
nogenic, especially in connection with wood-treatment ad-
ditives (chromate, wood preservative). Materials containing
asbestos may only be worked by specialists.
– 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 ma-
terials to be worked.
Avoid dust accumulation at the workplace. Dust can
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easily ignite.
Operation
Products that are only sold in AUS and NZ: Use a resid-
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ual current device (RCD) with a nominal residual current
of 30 mA or less.
Start-up
Pay attention to the mains voltage. The voltage of the
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power source must match the voltage specified on the
rating plate of the power tool. Power tools marked
with 230 V can also be operated with 220 V.
Setting the Operating Mode
The operating mode of the power tool is selected using the
impact/mode selector switch (7).
– To change the operating mode, turn the impact/mode se-
lector switch (7) to the required position.
Note: Only change the operating mode when the power tool
is switched off. Otherwise, the power tool may become dam-
aged.
Position for drilling without impact in wood,
metal, ceramic and plastic and for screw-
driving
Position for hammer drilling into concrete
or stone
Vario-Lock position for adjusting the chisel
position
The impact/mode selector switch (7) will
not engage in this position.
Position for chiselling
English | 15
1 609 92A 70G | (29.03.2022)