Bosch PSB 850-2 RE Notice Originale page 17

OBJ_BUCH-875-003.book Page 17 Friday, June 22, 2012 9:38 AM
To achieve optimum extraction results, please observe the
following notes:
– Pay attention that the extraction device faces flush against
the workpiece or the wall. This also makes drilling at a right
angle easier.
– When using the extraction device, always work with the
maximum speed.
– After reaching the desired drilling depth, pull the drill bit
out of the drill hole first and then switch off the impact drill.
– Use the extraction device only with the filter element 19
mounted, as otherwise dust/chips could access the interi-
or of the power tool and cause damage.
– Check the condition of the filter element 19 regularly. Re-
place a damaged filter element immediately.
– The dust protection ring 21 can wear, especially when
working with large drill-bit diameters. Replace the dust
protection ring when worn/damaged.
Mounting the Extraction Device (see figure A)
Guide the extraction device 14 from the front toward the bot-
tom side of the impact drill. Pay attention that the extraction
device 14 faces flush against the casing and that it is locked.
Cleaning the Extraction Device (see figures B–D)
The dust collector 15 is sufficient for approx. 20 drillings with
a drilling diameter of 10 mm.
When the extraction force diminishes the dust collector 15
must be emptied. For this, press on the riffled surface of the
release button 18 and take off the dust collector 15.
Empty and clean the dust collector 15. Clean the filter ele-
ment 19 by gently striking or tapping against it.
Check the filter element 19 for damage and replace it as re-
quired.
Press on the holder of the filter element 19 and pull it out. Re-
place the filter element 19 including the holder. When placing
on the holder again, make sure that the rubber gasket 20 is in-
serted.
Reattach the dust collector 15 again and lock it by pressing
against the smooth surface of the release button 18.
Removing the Extraction Device (see figure E)
For disassembly of the extraction device 14, press release
button 22 and pull off the extraction device 14 toward the
front.
Stowing the Extraction Device (see figure F)
For stowing the extraction device 14 in the case, remove the
extraction device 14, slide it together and attach clamp 23.
Attach the locking latch 24 or empty the dust collector 15 be-
fore placing down the extraction device.
Auxiliary Handle
Operate your machine only with the auxiliary handle
12.
The auxiliary handle 12 can be set in 8 positions to achieve a
safe and low-fatigue working stance.
Turn the wing bolt for adjustment of the auxiliary handle 13 in
anticlockwise direction and push the auxiliary handle 12 for-
ward until you can pivot it to the desired position. Then pull
Bosch Power Tools
the auxiliary handle 12 back again and tighten the wing bolt
13 again in clockwise direction.
Adjusting the Drilling Depth (see figure G)
The required drilling depth X can be set with the depth stop 1.
Press the button for the depth stop adjustment 3 and insert
the depth stop into the auxiliary handle 12.
The knurled surface of the depth stop 1 must face downward.
Pull out the depth stop until the distance between the tip of
the drill bit and the tip of the depth stop correspond with the
desired drilling depth X.
Changing the Tool (see figure H)
Keyless Chuck
The drill spindle is locked when the On/Off switch 10 is not
pressed. This makes quick, convenient and easy changing of
the tool in the drill chuck possible.
Open the keyless chuck 2 by turning in rotation direction
until the tool can be inserted. Insert the tool.
Firmly tighten the collar of the keyless chuck 2 by hand in ro-
tation direction until the locking action ("click") is no longer
heard. This automatically locks the chuck.
The locking is released again to remove the tool when the col-
lar is turned in the opposite direction.
Screwdriver Tools
When working with screwdriver bits 26, a universal bit holder
25 should always be used. Use only screwdriver bits that fit
the screw head.
For driving screws, always position the "Drilling/Impact Drill-
ing" selector switch 4 to the "Drilling" symbol.
Replacing the Drill Chuck
Before any work on the machine itself, pull the mains
plug.
Removing the Drill Chuck (see figure I)
Disassemble the auxiliary handle and set the gear selector 11
to the centre position between the 1st and 2nd gear.
Insert a steel pin with a diameter of Ø 4 mm and approx.
50 mm of length into the drill hole on the spindle neck in order
to lock the drill spindle.
Clamp the short end of an Allen key 27 into the keyless chuck
2.
Place the machine on a stable surface (e. g. a workbench).
Hold the machine firmly and loosen the keyless chuck 2 by
turning the Allen key 27 in rotation direction
tight-seated keyless chuck by giving the long end of the Allen
key 27 a light blow. Remove the Allen key from the keyless
chuck and completely unscrew the keyless chuck.
Mounting the Drill Chuck (see figure J)
The keyless chuck is mounted in reverse order.
Remove the steel pin from the drill hole on the spindle
neck after mounting is completed.
The drill chuck must be tightened with a tightening
torque of approx. 50–55 Nm.
English | 17
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2 609 005 654 | (22.6.12)