Bosch GSR12V-300 Instrucciones De Funcionamiento Y Seguridad página 11

2610051568.qxp_GSR12V-300 12/19/18 1:15 PM Page 11
comes to a complete stop. Shifting during
rotation of the chuck can cause damage to
the tool.
▶ Gear Shifting
Your tool is equipped with two separate
gear ranges, low gear and high gear. Low
gear provides high-torque and slower
drilling speeds for heavy duty work or for
driving screws. High gear provides faster
speeds for drilling lighter work. To change
speeds slide switch, to the high or low
position (Fig. 1).
ATTENTION: If your tool appears to be
running, but the chuck will not turn, check
to make sure the gear shifting switch is
pushed fully into desired setting.
▶ Adjustable Clutch
Your tool features 21 clutch settings.
Output torque will increase as the clutch
ring, is rotated from 1 to 20. The drill
" " position will lock up the clutch to
permit drilling and driving heavy duty work
(Fig. 1).
▶ Autolock™
Your tool is equipped with an automatic
locking system. This feature will lock the
bit holder in one position when the trigger
switch is released. This will allow you to
tighten or loosen a nut or screw by rotating
the tool by hand with the switch off. This is
convenient when higher turning torque is
needed.
▶ Built-in Work Light
Your tool is also equipped with a light that
turns on automatically when the switch is
activated, for better visibility when
drilling/driving (Fig. 1).
▶ Battery Charge Condition
Indicator Lights
Your tool is equipped with charge condition
indicator lights (Fig. 1). The indicator lights
shows the charge condition of the battery
for a few second when the On/Off trigger is
pressed halfway or fully.
Operating Instructions
Do not change direction
of rotation until the tool
LED
Continuous lighting 3 x green
Continuous lighting 2 x green
Continuous lighting 1 x green
Flashing light 1 x green
▶ Operating Tips
You will extend the life of your bits and do
neater work if you always put the bit in
contact with the work before pulling the
trigger. During the oper a tion, hold the tool
firmly and exert light, steady pressure. Too
much pressure at low speed will stall the
tool. Too little pressure will keep the bit
from cutting and cause excess friction by
sliding over the surface. This can be
damaging to both tool and bit.
▼ DRIVING NUTS AND BOLTS
Variable speed control must be used with
caution for driving nuts and bolts with
socket set attach ments. The technique is to
start slowly, increasing speed as the nut or
bolt runs down. Set the nut or bolt snugly
by slowing the drill to a stop. If this
procedure is not followed, the tool will
have a tendency to torque or twist in your
hands when the nut or bolt seats.
▼ DRILLING
You will extend the life of your bits and do
neater work if you always put the bit in
contact with the work before pulling the
trigger. During the oper a tion, hold the tool
firmly and exert light, steady pressure. Too
much pressure at low speed will stall the
tool. Too little pressure will keep the bit
from cutting and cause excess friction by
sliding over the surface. This can be
damaging to both tool and bit.
▼ DRILLING WITH VARIABLE SPEED
The variable speed trigger allows you to
slowly increase RPM. By using a slow
starting speed, you are able to keep the bit
from "wander ing". You can increase the
speed as the bit "bites" into the work by
squeezing the trigger.
▼ DRIVING WITH VARIABLE SPEED
Variable speed drills will double as a power
screwdriver by using a screwdriver bit.
Prior to driving screws, pilot and clearance
holes should be drilled. Place the threaded
11
Capacity
> 2/3
> 1/3
< 1/3
reserve