Bosch 11317EVS Instrucciones De Funcionamiento Y Seguridad página 8

BM 1619929511 11-11:BM 1619929511 11-11.qxp 12/6/11 7:04 AM Page 8
SLIDE "ON-OFF" SWITCH
The tool is switched "ON" by the slide switch 9
located in the rear handle.
TO TURN THE TOOL "ON" slide the switch to
the right.
TO TURN THE TOOL"OFF " slide the switch
to the left.
VARIAbLE SPEED DIAL
Your tool is equipped with a variable speed
dial. The impact rate (BPM) and rotating speed
(RPM) can be varied according to the type of
work being performed by setting the variable
speed dial to the selected setting. The chart
below will help you to determine which setting
to use for your application. However, a pre-test
will determine the best speed setting, as the
chart is intended only as a guide. Once the
proper setting is determined the impact rate
and rotating speed is kept constant by means
of the "Electronic Feedback Circuitry". The
variable speed dial can be adjusted while the
motor is running with the tool free from work,
allowing the operator to adjust the impact rate
and rotating speed according to the actual
application.
ELECTRONIC FEEDbACK CIRCUITRy
Chipping (Demolition)
Area of application
Plaster work
Removing tiles
Brick work
Concrete
The internal electronic feedback system
provides a "soft start", which will reduce the
stresses that occur from a high torque start.
The system also helps to keep the pre-
selected impact rate and rotating speed
virtually constant between no-load and load
conditions.
INSTALLING ACCESSORIES
Clean the insert shank end of the accessory to
remove any debris, then lightly grease with a
light oil or lubricant. If work is to be done
where the accessories are changed frequently
and laid in dirt, sand or concrete dust, it is best
not to grease the shank after wiping clean.
Operating Instructions
Control setting
1 - 2
3
4
5 - 6
(EFC)
Pull the lock bolt outward and rotate it 180˚.
Insert hex shank into the tool holder, with the
recess on the shank facing downward. Return
the lock bolt to the original position. Pull
outward on the accessory to be certain it is
locked into the tool holder (Fig. 1).
NOTE: The high efficiency available from the
rotary hammers can only be obtained if sharp
and undamaged accessories are used. The
"cost" to maintain sharp and undamaged
accessories is more than offset by the "time
saved" in operating the tool with sharp
accessories.
REMOVING ACCESSORIES
Accessories may be hot after
WARNING
use. Avoid contact with skin
and use proper protective gloves or cloth to
remove.
To remove an accessory, reverse the previous
directions. All accessories should be wiped
clean after removing.
AUxILIARy HANDLE
The tool must be supported with the auxiliary
handle, which can be swiveled 360˚. To
reposition and/or swivel the handle, loosen the
hand grip, move the handle to the desired
position along the barrel and securely retighten
the hand grip.
"TOOL TIPS"
For the best penetration rates in concrete, run
the tool with a steady pressure, but do not use
excessive force as this will decrease the
efficiency of the tool.
All grease packed hammers require a short
period of time to warm up. Depending on the
room temperature, this time may vary from
approximately 15 seconds (90˚F) to 2 minutes
(32˚F). A new hammer requires a break-in
period before full performance is realized. This
period may require up to 5 hours of operation.
An electric hammer is likely to be the most
expensive portable tool at the construction job.
The long wear and efficient operation of the
BOSCH hammers will more than justify the
cost for tools of this type. As earlier pointed
out, sharp accessories as well as clean air
vents are necessary for efficient operation.
Establish and follow a set maintenance
program.
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