Dust/Chip Extraction; Operating Modes - Bosch PST 650 Manual Original

OBJ_BUCH-343-003.book Page 16 Monday, February 11, 2008 5:47 PM
16 | English

Dust/Chip Extraction

Dusts from materials such as lead-containing
coatings, some wood types, minerals and
metal can be harmful to one's health. Touch-
ing or breathing-in the dusts can cause aller-
gic reactions and/or lead to respiratory infec-
tions 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 contain-
ing asbestos may only be worked by
specialists.
– Use dust extraction whenever possible.
– Provide for good ventilation of the working
place.
– It is recommended to wear a P2 filter-class
respirator.
Observe the relevant regulations in your coun-
try for the materials to be worked.
Connecting the Dust Extraction
Place a vacuum hose 3 (accessory) onto the vac-
uum connection 4. Connect the vacuum hose 3
with a vacuum cleaner (accessory). An overview
for the connection of various vacuum cleaners
can be found at the end of these instructions.
Switch the saw dust blower off when a dust ex-
traction system is connected (see "Sawdust
Blower Device").
The vacuum cleaner must be suitable for the ma-
terial being worked.
When vacuuming dry dust that is especially detri-
mental to health or carcinogenic, use a special
vacuum cleaner.
Operation

Operating Modes

Before any work on the machine itself, pull
the mains plug.
Adjusting the Cutting Angle (see figures B and C)
The base plate 5 can be swivelled by 45° to the
left or right for mitre cuts.
Insert a saw blade 8.
1 609 929 L16 | (11.2.08)
Loosen the screw 12 and lightly slide the base
plate 5 toward the vacuum connection 4.
For adjustment of precise mitre angles, the base
plate has adjustment notches on the left and
right at 0°, 22.5° and 45°. Swivel the base plate
5 to the desired position according to the scale
13. Other mitre angles can be adjusted using a
protractor.
Afterwards, push the base plate 5 to the stop in
the direction of the saw blade 8.
Position the holder for the guide roller 11 in such
a manner that the guide roller 7 faces against the
back of the saw blade. Precise cuts are possible
only when the guide roller faces tightly against
the back of the saw blade.
Tighten the screw 12 again.
Offsetting the Base Plate (see figure B)
For sawing close to edges, the base plate 5 can
be offset to the rear.
Insert a saw blade 8.
Loosen the screw 12 and slide the base plate 5
toward the vacuum connection 4 to the stop.
Position the holder for the guide roller 11 in such
a manner that the guide roller 7 faces against the
back of the saw blade. Precise cuts are possible
only when the guide roller faces tightly against
the back of the saw blade.
Tighten the screw 12 again.
Sawing with the base plate 5 offset is possible
only with a mitre angle of 0°.
Sawdust Blower Device
With the air jet of the sawdust blower device 6,
the cutting line can be kept free of dust and chips.
Switching on the sawdust blower device: For
cuts in materials with high removal rate, such as
in wood, plastic, etc., push the switch 6 to posi-
tion "I".
Switching off the sawdust blower device: For
cuts in metal and when a dust extraction system
is connected, push the switch 6 to position "0".
Bosch Power Tools