Dust/Chip Extraction - Bosch GCM 12 JL Professional Notice Originale

OBJ_BUCH-1600-005.book Page 31 Friday, December 16, 2016 9:23 AM
– Place the washers 47 on the screws 47 and use them to
screw the tilt-protector bar 44 on tight with the hex key
(4 mm) 17.
 Never remove the tilt-protector bar. Without the use of
the tilt-protector bar, the machine does not stand safely and
can tip over, especially when sawing at maximum mitre/
bevel angles.
Stationary or Flexible Mounting
 To ensure safe handling, the machine must be mounted
on a level and stable surface (e. g., workbench) prior to
using.
Mounting to a Working Surface (see figures A2–A3)
– Fasten the power tool with suitable screw fasteners to the
working surface. The mounting holes 8 serve for this pur-
pose.
or
– Clamp the power tool with commercially available screw
clamps by the feet to the working surface.
Mounting to a Bosch Saw Stand
With the height-adjustable legs, Bosch GTA saw stands pro-
vide firm support for the power tool on any surface. The work-
piece supports of the saw stand are used for underlaying long
workpieces.
 Read all safety warnings and instructions included with
the worktable. Failure to observe safety warnings and in-
structions 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.

Dust/Chip Extraction

 Dust 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 dust can cause
allergic reactions and/or lead to respiratory infections of
the user or bystanders.
Certain dust, such as oak or beech dust, is considered car-
cinogenic, especially in connection with wood-treatment
additives (chromate, wood preservative). Materials con-
taining 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.
 Prevent dust accumulation at the workplace. Dust 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.
Bosch Power Tools
Integrated Dust Extraction (see figures B1–B2)
For basic dust collection, use the dust bag 1 provided.
 Check and clean the dust bag each time after using.
 When sawing aluminium, remove the dust bag to avoid
the risk of fire.
– Mount the dust bag 1 onto the chip ejector 46.
or when space conditions are limited:
– Firstly, mount extraction adapter 2 firmly onto chip ejec-
tor 46 and then mount dust bag 1 firmly onto extraction
adapter 2.
During sawing, the dust bag and the extraction adapter may
never come in contact with moving tool components.
Always empty the dust bag in good time.
External Dust Extraction
For dust extraction, you can also connect a vacuum hose to
chip ejector 46 or extraction adapter 2.
– Insert the vacuum hose firmly into chip ejector 46 or ex-
traction adapter 2.
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.
Changing the Saw Blade (see figures C1 – C4)
 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.
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. This prevents
overheating of the saw teeth during sawing.
Removing the Saw Blade
– Bring the power tool into the working position.
– Press lever 22 and tilt the retracting blade guard 5 up to
the stop.
Hold the retracting blade guard in this position.
– Loosen fastening screw 48 (approx. 4 turns) with the hex
key (4 mm) 17.
Do not completely unscrew the screw.
– Pull the retracting blade guard 5 and the cover plate 36
completely back until the retracting blade guard is held by
laser protection cap 35.
– Turn the hex socket screw 49 with the hex key (6 mm) 17
and at the same time press the spindle lock 21 until it en-
gages.
– Hold the spindle lock 21 pressed and unscrew the hex
socket screw 49 in clockwise direction (left-hand thread!).
– Remove the clamping flange 50.
– Remove the saw blade 37.
English | 31
1 609 92A 348 | (16.12.16)