Overload Protection; Maintenance And Service; Maintenance And Cleaning; Accessories/Replacement Parts - Bosch GDB 180 WE Professional Manual Original

To drill, loosen the locking brake (29) until the star
handle (17) is easy to move. When doing so, hold the star
handle in place to prevent the power tool from sliding down
in an uncontrolled manner.
Start drilling in first gear at a low speed until the core bit ro-
tates in the material without vibrating. Then switch to
second gear if necessary.
You should always adjust the contact pressure to the mater-
ial you are drilling. Drill applying uniform pressure. If neces-
sary, pull the core bit gently out of the drill hole to remove
the wet/dry drilling debris from the diamond segments.
Use the star handle (17) to turn the power tool down to the
required drilling depth. Then turn it back until the core bit is
completely visible.
To reach the maximum possible working length, you will
need to remove the drill core once it completely fills the core
bit. Then insert the core bit back into the drilled hole and
drill to the maximum depth.
Overload clutch
If a core bit jams or snags, the power transmission to the drill
spindle will be interrupted. If this happens, switch the power
tool off immediately to prevent wear and heat build-up.
Dislodge the core bit by turning it to the right and left using a
suitable open-ended spanner. Carefully pull the power tool
out of the bore hole as you do so.

Overload protection

If the overload threshold is exceeded, the power tool will
start noticeably pulsating. Reduce the contact pressure until
the power tool starts working normally again.
If the contact pressure is not reduced, the power tool will
switch off. You will be able to switch the power tool on again
straight away, but you should now continue working with a
lower contact pressure.
Removing the drill core
Wet drilling: Once drilling is complete, allow the water to
keep flowing for a short while to rinse out the debris
between the core bit and the drill core itself.
If the drill core is tightly seated in the core bit, hit the core bit
with a piece of soft wood or plastic to loosen the drill core. If
necessary, push the drill core out through the shank of the
core bit using a rod.
Note: Do not hit the core bit with hard objects, as this may
damage or deform it.
Bosch Power Tools

Maintenance and Service

Maintenance and Cleaning

Pull the plug out of the socket before carrying out any
u
work on the power tool.
To ensure safe and efficient operation, always keep
u
the power tool and the ventilation slots clean.
Keep the rack (26) and the guide surfaces of the drill
column (20) clean at all times.
Clean the drill spindle (7) once the work is complete. Regu-
larly spray the drill spindle and the core bit (8) with corro-
sion inhibitor.
In order to avoid safety hazards, if the power supply cord
needs to be replaced, this must be done by Bosch or by an
after-sales service centre that is authorised to repair Bosch
power tools.
Readjusting the sliding guides (see figure D)
The sliding guides (34) can wear down over time, resulting
in play between the sliding guides and the drill column. To
eliminate this play, you will need to readjust the sliding
guides.
Loosen all ten hex nuts (35) using an open-ended spanner
(width across flats 13 mm). Then tighten the threaded
pins (36) evenly until the play is minimised. Retighten all ten
hex nuts.
The sliding guides do not need to be replaced until the slid-
ing layer (red) is worn down, i.e. the red colour has disap-
peared and the backing material is revealed. We recommend
having the replacement done by an authorised after-sales
service centre for Bosch power tools.
Transport
You can take down the drill stand while the power tool is still
attached. To do this, turn the power tool by the star
handle (17) as far as possible towards the base plate to re-
duce the risk of tipping.
To safely transport the power tool, remove it from the drill
stand.

Accessories/replacement parts

Water collection ring (GCR 180)
Sealing cover for water collection ring
(GCR 180)
Fastening set:
– For concrete
– For masonry
Anchor set for concrete
Vacuum set
Rubber seal for vacuum set (GCR 180)
Pressurised water tank
G 1/2" adapter
Wet/dry extractor GAS 35 M AFC
English | 21
2 608 550 621
2 608 550 624
2 608 002 000
2 607 000 745
2 608 002 001
2 608 550 623
2 608 550 625
2 609 390 308
2 608 598 043
1 609 92A 4NJ | (24.03.2021)