Starting Operation; Switching Off - Bosch Professional GDB 180 WE Originalbetriebsanleitung

20 | English
Fitting a water collection ring for water extraction
(see figure C)
The water collection ring (see "Accessories/replacement
parts", page 22) is intended for use with the drill stand for
diamond drills GCR 180 and the diamond drill
GDB 180 WE.
Cut an opening for the required drilling diameter in the seal-
ing cover.
Push the tension spring (33) as far as possible into the gap
between the base plate (25) and drill column (20). Make
sure that the angled section of the tension spring is facing
downwards.
Put the water collection ring in position and place the ten-
sion spring on the contact points on the water collection
ring. (The lugs on the ends of the tension spring are used to
pull the tension spring upwards.)
The tensioning force of the spring will press the water collec-
tion ring with its seal onto the surface. Together with the va-
cuum of the wet/dry extractor, this will prevent water from
escaping.
Connecting the dust extraction system
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.
Attach the extraction adapter (13) to the claw coupling (6)
and tighten it by turning it clockwise as far as possible.
Attach the extraction hose (15) of a wet/dry extractor that is
compatible with and recommended for this system (see "Ac-
cessories/replacement parts", page 22) to the extraction
outlet (14).
Operation
Changing the drilling angle
Pull the plug out of the socket before carrying out any
u
work on the power tool.
Always retighten all the screws after making adjust-
u
ments to the drill stand.
Loosen the lower screw (24) on the drilling angle adjuster
using an open-ended spanner (width across flats 17 mm)
and remove it.
Loosen the upper screw (21) using an open-ended spanner
(width across flats 17 mm).
1 609 92A 4NJ | (03.04.2019)
Loosen the clamping nut (27) using an open-ended spanner
(width across flats 24 mm). Set the drill stand to the re-
quired drilling angle.
Retighten the clamping nut (27) using the open-ended span-
ner (width across flats 24 mm). Tighten the upper
screw (21) using an open-ended spanner (width across flats
17 mm).
The drill stand must not be inserted until the clamping
u
nut (27) and screw (21) of the angle adjuster have
been retightened.
After drilling, put the drill column (20) back in the vertical
position (drilling angle of 0°) by carrying out the steps above
in reverse order. To do this, you will need to refit the lower
screw (24) and tighten it using an open-ended spanner
(width across flats 17 mm).

Starting operation

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.
Seek advice from the responsible structural engineer,
u
architect or construction supervisor regarding
planned drill holes before starting work. Do not penet-
rate any reinforcements unless you have authorisa-
tion from a structural engineer.
When drilling holes that penetrate walls or ceilings, al-
u
ways check the area concerned for obstacles. Close
off the work site and prevent the drill core from falling
by means of formwork.
Function test of the portable residual current device
(PRCD)
Before starting work, always check that the portable residual
current device (PRCD) (16) is functioning correctly:
– Press the TEST button on the residual current device
(PRCD). The red indicator light will switch off.
– Press the RESET button. It must now be possible to
switch the power tool on.
If the red indicator light does not switch off when you press
the TEST button or it switches off repeatedly when the
power tool is switched on, you must have the power tool
checked by an authorised Bosch after-sales service centre.
The power tool must not be used if the portable resid-
u
ual current device (PRCD) is defective.
Switching on
Press the RESET button on the portable residual current
device (PRCD) (16).
Wet drilling: Set the water cutoff valve (10) to flow.
To switch on the power tool, press the on/off switch (1) and
keep it pressed.
To lock the on/off switch down, press the lock-on button (2)
as well.

Switching off

Release the on/off switch (1). If the on/off switch is locked,
press the switch first and then release it.
Bosch Power Tools