Bosch GDB 180 WE Professional Manual Original página 18

18 | English
Typically, the A-weighted noise level of the power tool is:
Sound pressure level 92 dB(A); sound power level
113 dB(A). Uncertainty K=3 dB.
Wear hearing protection
The noise emission value given in these instructions has
been measured in accordance with a standardised measur-
ing procedure and may be used to compare power tools. It
may also be used for a preliminary estimation of noise emis-
sions.
The noise emission value given represents the main applica-
tions of the power tool. However, if the power tool is used
for other applications, with different application tools or is
poorly maintained, the noise emission value may differ. This
may significantly increase noise emissions over the total
working period.
To estimate noise emissions accurately, the times when the
tool is switched off, or when it is running but not actually be-
ing used, should also be taken into account. This may signi-
ficantly reduce noise emissions over the total working
period.
Assembly
Pull the plug out of the socket before carrying out any
u
work on the power tool.
Assembling the drill stand
Erecting the drill column
Position the drill column (20) so that it is vertical. Insert the
lower screw (24) (see illustration on the graphics page).
Tighten the lower screw (24) and the upper screw (21) us-
ing an open-ended spanner (width across flats 17 mm).
Tighten the clamping nut (27) using an open-ended spanner
(width across flats 24 mm).
Star handle
Screw the three handlebars of the star handle (17) all the
way into the central hub of the star handle.
The star handle (17) acts as the feed crank during drilling.
To drill, push the star handle all the way to the left or right
(as required) and onto the feed pinion (28). Pull the star
handle off firmly to remove it.
Feed lock with locking brake
Before using for the first time, screw the locking brake (29)
into the free threaded hole underneath the feed pinion (28).
Lock the feed when performing any work on the drill stand,
during breaks and when not using the drill stand. Do this by
engaging the locking brake (29).
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.
Inserting the power tool (see figure A)
Ensure that the locking brake (29) is engaged.
1 609 92A 4NJ | (24.03.2021)
Loosen the screw (18) on the drill holder using an open-
ended spanner (width across flats 13 mm). Insert the power
tool with the collar all the way into the drill holder (19) from
above.
Turn the power tool in the drill holder so that all the switches
are easy to reach and the dust extraction/water cooling con-
nection on the power tool does not interfere with drilling.
Tighten the screw (18) using the open-ended spanner
(width across flats 13 mm).
Slide the star handle (17) to the right or left and onto the
feed pinion (28) in order to drill.
Check that the power tool is fitted securely in the drill
u
holder.
To remove the power tool from the drill stand, carry out the
steps above in reverse order.
Fixing the drill stand in place
Note: Fix the drill stand in place so that it is free of play. This
prevents the core bit jamming and segments from being torn
out.
Depending on the type and condition of the surface, fasten
the drill stand at the planned bore hole using anchors or va-
cuum.
Positioning the drill stand before fixing in place
Mark the centre of the hole you want to drill on the surface.
Mark the outer dimensions of the core bit you want to use,
using the centre of the hole as the centre of the bit.
Fix the drill stand (with power tool inserted) in place using
an anchor or vacuum so that the core bit lines up with the
marked dimensions when attached.
Fixing with an anchor (see figure B)
Drill a separate attachment hole for fixing the drill stand in
place with an anchor (accessories) in masonry or concrete.
Distance between anchor hole and centre of planned
hole
optimum 210 mm
Possible 200–300 mm
The following dimensions apply for the anchor hole:
Diameter
Masonry 20 mm
Concrete 16 mm
Insert a concrete anchor with expansion wedge or a masonry
anchor (30). Screw the quick-clamping spindle (31) into the
anchor.
Attach the drill stand and a washer and screw these on using
the wing nut (32). Tighten the wing nut according to the lev-
elling using an open-ended spanner (width across flats
27 mm).
Fastening by vacuum (accessory)
To fasten the drill stand by vacuum, you need a commercially
available vacuum pump and a Bosch vacuum set (access-
ory).
Depth
85 mm
50 mm
Bosch Power Tools