Dust/Chip Extraction - Bosch PPS 7S Originalbetriebsanleitung

OBJ_BUCH-1259-002.book Page 45 Wednesday, March 30, 2011 11:02 AM

Dust/Chip Extraction

Dusts from materials such as lead-containing
coatings, some wood types, minerals and metal
can be harmful to one's health. Touching or
breathing-in the dusts can cause allergic reac-
tions and/or lead to respiratory infections of the
user or bystanders.
Certain dusts, such as oak or beech dust, are
considered as carcinogenic, especially in con-
nection with wood-treatment additives (chro-
mate, wood preservative). Materials containing
asbestos may only be worked by specialists.
– Always use dust extraction.
– Provide for good ventilation of the working
place.
– It is recommended to wear a P2 filter-class
respirator.
Observe the relevant regulations in your country
for the materials to be worked.
The dust/chip extraction can be blocked by
dust, chips or workpiece fragments.
– Switch the machine off and pull the mains
plug from the socket outlet.
– Wait until the saw blade has come to a com-
plete stop.
– Determine the cause of the blockage and cor-
rect it.
Cleaning the Lower Saw Blade Cover
(see figure I)
A cleaning flap 55 located in the lower saw
blade cover 54 can be opened for removal of
workpiece fragments and large chips.
– Switch the machine off and pull the mains
plug from the socket outlet.
– Wait until the saw blade has come to a com-
plete stop.
– Remove table extension 27 and universal
guide 1.
– Tilt the machine on it's side.
– Remove bottom plate 39.
– Open cleaning flap 55 of the lower saw blade
cover 54 and remove workpiece fragments
and chips.
– Shut the cleaning flap and screw the bottom
plate on again.
– Bring the machine back to the working posi-
tion and mount all attachment parts.
Bosch Power Tools
External Dust Extraction (see figure H)
– Connect a vacuum hose to the sawdust ejec-
tor 10.
The vacuum cleaner must be suitable for the ma-
terial being worked.
When vacuuming dry dust that is especially det-
rimental to health or carcinogenic, use a special
vacuum cleaner.
Changing the Saw Blade
(see figures J1 J4)
–
Before any work on the machine itself, pull
the mains plug.
When mounting the saw blade, wear protec-
tive gloves. Danger of injury when touching
the saw blade.
Select the suitable saw blade for the material to
be cut.
Use only saw blades whose maximum permitted
speed is higher than the no-load speed of the
power tool.
Use only saw blades that correspond with the
characteristic data given in these operation in-
structions and that are tested and marked in ac-
cordance with EN 847-1.
Removing the Saw Blade
– Remove the blade guard 3 and the laser unit
41 from the riving knife 4.
– Loosen the screws of insert plate 5 with Al-
len key 13 and remove the insert plate from
the saw table.
– Turn crank 18 clockwise to the stop, so that
the saw blade 28 is in the highest possible
position above the saw table.
– Adjust a saw blade bevel angle of 45°. (see
"Adjusting Bevel Angles", page 47)
– Turn the Allen screw 57 with the Allen key 13
provided while at the same time pressing the
spindle lock 56 until it engages.
– Keep the spindle lock 56 pressed and un-
screw the Allen screw 57 in anticlockwise di-
rection.
– Remove the exterior clamping flange 58.
– Remove the saw blade 28.
1 609 929 W71 | (30.3.11)
English | 45