Bosch 1639 Instrucciones De Funcionamiento Y Seguridad página 9

BM 2610915206 10/03 10/15/03
CIRCLE CUTTING GUIDE
(Model 1639K only)
Your tool is equipped with a circle cutting
guide that allows you to cut circles from 1
inch up to 19 inches in diameter. Unscrew
pivot knob and turn pivot foot over so center
point is facing down (Fig. 7).
For holes 1" to 12", assemble with center
point towards the tool.
For holes 8" to 19", assemble with center
point towards the round knob.
Reattach the pivot foot knob and pivot foot.
Loosen pivot knob and slide to desired
diameter of hole to be cut. Line up knob with
diameter size of circle you wish to cut.
For English (IN), use the scale on top of the
metal rule. For metric (CM) use the sides of
the metal rule.
Start cutting in a clockwise direction using
consistent moderate pressure. If you need to
3 POSITION ON/OFF
BUMP-OFF SLIDE SWITCH
Never leave tool unattended in either the "1" or
"2" ON positions.
Your tool has 2 variable speeds. The speed
is controlled by a three position bump-off
slide switch located on the rear, side of the
tool (fig. 8).
Position "0" is the OFF position
Position "1" turns the tool ON and operates
at 25,000 RPM.
When the power switch is slid upward to the
first - or "1" - position, the tool is "live" with
a continuous running action. To turn the tool
OFF push the slide switch to the "0"
position.
MAKING DRYWALL CUT OUTS
After assembling the bit into the tool as
described earlier, it will be necessary to
review the instructions provided below and
make some practice cut-outs with this tool
before attempting an actual job. The best
method is to take some scrap pieces and
nail or screw them in place over wall studs
which have an electrical box or other feature
in place. A few such exercises will give you
the necessary practice to make clean,
professional cutouts around whatever is
behind the drywall you are installing.
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reposition your hands, turn tool off first
before changing hand positions.
Continue cutting your circle until you have
cut the complete shape, and turn off tool.
FIG. 7
CIRCLE CUTTING
GUIDE
PIVOT KNOB
ROUND KNOB
PIVOT FOOT
Position "2" turns the tool ON to the 30,000
RPM level with a continuous running action.
To turn the tool OFF, push the slide switch
down to the "0" position.
FIG. 8
2
1
0
Do not attempt to use this
WARNING
!
tool to make cut-outs
around any fixture or opening which has
live electrical wires, or on any wall which
may have live electrical wiring behind it,
as the bit could conduct current to the
tool, creating an electrocution hazard for
the operator. Shut off breakers or remove
fuses to disconnect the circuit. Always hold
the tool by its thermoplastic housing, and
always wear eye protection when operating
this device.
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METAL
RULE
CENTER
POINT