Bosch Professional GBH 2-25 Original Instructions Manual page 18

18 | English
– Insert the chuck key into the corresponding holes of the
keyed chuck (17) and clamp the tool evenly.
– Turn the impact/mode selector switch (11) to the
"drilling" position.
Removing the application tool
– Use the chuck key to turn the sleeve of the keyed
chuck (17) anticlockwise until the application tool can be
removed.
Changing the keyless quick-change chuck
GBH 2-25 F / GBH 2-26 F
Inserting the application tool (see figure G)
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 (21) of the keyless quick-change
chuck firmly in place. Open the tool holder by turning the
front sleeve (20) until the tool can be inserted. Hold the
retaining ring (21) in place and firmly tighten the front
sleeve (20) by turning it in the direction of the arrow until
you hear it click into place.
– 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 (20) 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 (11) to the
"drilling" position.
Removing the application tool (see figure H)
– Hold the retaining ring (21) of the keyless quick-change
chuck firmly in place. Open the tool holder by turning the
front sleeve (20) in the direction of the arrow until the
tool can be removed.
Dust/Chip Extraction
The dust from materials such as lead paint, some types of
wood, minerals and metal can be harmful to human health.
Touching or breathing in this dust can trigger allergic reac-
tions and/or cause respiratory illnesses in the user or in
people in the near vicinity.
Certain dusts, such as oak or beech dust, are classified as
carcinogenic, especially in conjunction with wood treatment
additives (chromate, wood preservative). Materials contain-
ing asbestos may only be machined by specialists.
– Use a dust extraction system that is suitable for the ma-
terial wherever possible.
– Provide good ventilation at the workplace.
– It is advisable to wear a P2 filter class breathing mask.
The regulations on the material being machined that apply in
the country of use must be observed.
Avoid dust accumulation at the workplace. Dust can
u
easily ignite.
1 609 92A 80X | (01.07.2022)
Dust extraction with GDE 16 Plus (accessory)
(see figure I)
For dust extraction, the GDE 16 Plus (accessory) is re-
quired.
The dust extractor must be suitable for the material being
worked on.
When extracting dry dust or dust that is especially detri-
mental to health or carcinogenic, use a special dust ex-
tractor.
Dust Extraction with GDE 18V-26 D (accessory)
For dust extraction, the GDE 18V-26 D dust extraction at-
tachment (accessory) is required.
Observe the information on intended use in the relevant op-
erating manual when using the GDE 18V-26 D.
Dust collection cap (accessory) (see figure J)
To collect dust easily without using extraction, a dust collec-
tion cap (23) is required.
Operation
Products that are only sold in AUS and NZ: Use a resid-
u
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
u
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 (11).
– To change the operating mode, press the release
button (10) and turn the impact/mode selector
switch (11) until it clicks into 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 hammer drilling into concrete or
stone
Position for drilling without impact in wood,
metal, ceramic and plastic and for screwdriv-
ing
Vario-Lock position for adjusting the chisel po-
sition
The impact/mode selector switch (11) will not
engage in this position.
Position for chiselling
Bosch Power Tools