Dust/Chip Extraction - Bosch Professional GTM 12 JL Manual Original

OBJ_BUCH-1688-004.book Page 41 Tuesday, July 9, 2013 11:59 AM
 Read all safety warnings and instructions included with
the worktable. Failure of observing safety warnings and
instructions can lead to electrical shock, fire and/or cause
serious injuries.
 Assemble the worktable properly before mounting the
power tool. Perfect assembly is important in order to pre-
vent the risk of collapsing.
– Mount the power tool in transport position on the saw
stand.
Flexible Mounting (not recommended!)
In exceptional cases, when it is not possible to mount the ma-
chine onto a level and stable work surface, it can be set up us-
ing the tilt protector.
The tilt protector 6 is used for this purpose.
 Never remove the tilt protector. Without the use of the
tilt protector, the machine does not stand safely and can
tip over, especially when sawing at maximum mitre/bevel
angles.

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
reactions 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 connection with wood-treatment
additives (chromate, wood preservative). Materials contain-
ing 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 mate-
rials to be worked.
 Prevent dust accumulation at the workplace. Dusts can
easily ignite.
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 complete stop.
– Determine the cause of the blockage and correct it.
Integrated Dust Extraction (see figure c)
For basic dust collection, use the dust bag 8 provided.
 Check and clean the dust bag each time after using.
 When sawing aluminium, remove the dust bag to avoid
the risk of fire.
During sawing, the dust bag must never come into contact
with the movable machine parts.
– Press the clip of the dust bag 8 together and slide the dust
bag over the saw dust ejector 9. The clip must engage into
the groove of the saw dust ejector.
– Always empty the dust bag in good time.
Bosch Power Tools
External Dust Extraction
For dust extraction, a vacuum hose (size Ø 36 mm) can also
be connected to the dust ejector 9.
– Connect the vacuum hose with the sawdust ejector 9.
The vacuum cleaner must be suitable for the material being
worked.
When vacuuming dry dust that is especially detrimental to
health or carcinogenic, use a special vacuum cleaner.
Mounting Individual Components
 Before any work on the machine itself, pull the mains
plug.
Attaching the Laser Warning Label (see figure d)
The power tool is supplied with a warning label in German lan-
guage (marked with the number 39 in the representation of
the power tool on the graphics page).
– Before operating for the first time, stick the provided warn-
ing label in your national langauge over the text of the Ger-
man warning label.
Removing or mounting the lower saw blade cover (see
figure e)
During operation as a table saw, the lower saw blade cover 64
must cover the bottom part of the saw blade.
Before using as a chop and mitre saw:
– Remove the lower saw blade cover 64 and slide it into the
groove on the right-hand side of the parallel guide 59.
Before using as a table saw:
– Insert the lower saw blade cover 64 into the saw table 22.
Changing the Saw Blade (see figures f1
 Before any work on the machine itself, pull the mains
plug.
 When mounting the saw blade, wear protective gloves.
Danger of injury when touching the saw blade.
Use only saw blades whose maximum permitted speed is
higher than the no-load speed of the power tool.
Never use dado sets.
Use only saw blades that correspond with the characteristic
data given in these operation instructions and that are tested
and marked in accordance with EN 847-1.
Use only saw blades recommended by the tool manufacturer,
and suitable for sawing the materials to be cut.
When changing the saw blade, pay attention that the cutting
width is not smaller and the blade body thickness is not larger
than the thickness of the riving knife.
Removing the Saw Blade
– Bring the power tool into the chop and mitre saw working
position. (see "Working Position", page 42)
– Unscrew the locking screw 10 with the supplied slotted
screwdriver 5.
– Pull the lever 11 toward the right. At the same time, push
the lever upward and rotate the retracting balde guard 20
toward the rear to the stop.
This locks the retracting blade guard in the open position.
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