Operating Instructions - Bosch 1773AK - 10 Amp Concrete Surfacing Grinder Operating/Safety Instructions Manual

BM 3609929777 1/02 1/3/02
SLIDE ON-OFF SWITCH WITH LOCK
The tool is switched "ON" by the switch
button located at the side of the motor
housing. The switch can be locked in the
"ON" position, a convenience for long
grinding operations.
TO TURN THE TOOL "ON" without locking
it, slide the switch button forward by
applying pressure ONLY at the REAR
portion of the button. When pressure is
released the switch button will snap to
"OFF" position.
TO LOCK THE SWITCH "ON", slide the
switch button forward and press "IN" the
FRONT portion.
TO UNLOCK THE SWITCH, simply press
and release the REAR portion of the button.
Switch is spring loaded and will snap back
automatically.
Hold the tool with both
WARNING
!
hands while starting the
tool, since torque from the motor can cause
the tool to twist.
Start the tool before applying to work and let
the tool come to full speed before
contacting the workpiece. Lift the tool from
the work before releasing the switch. DO
NOT turn the switch "ON" and "OFF" while
the tool is under load; this will greatly
decrease the switch life.
ELECTRONIC FEEDBACK CIRCUITRY (EFC)
The internal electronic feedback system
provides a "soft start", which will reduce the
This tool is intended for grinding, deburring
and smoothing mainly mineral materials
such as, for example, concrete, stone,
marble and poured flooring without the use
of water. It also can be used for removing
protective coating and adhesive residue.
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Operating Instructions

stresses that occur from a high torque start.
The system also helps to keep the no load
speed virtually constant between no-load
and load conditions.
OVERLOAD PROTECTION
Your tool is equipped with overload
protection to protect the motor. If the tool
stops during operation TURN OFF SWITCH
IMMEDIATELY and allow the motor to cool
for about 30 seconds by running at no-load.
If the overload protection stops the tool
repeatedly, excessive force is causing the
tool to overload. Don't press so hard and let
the tool do the work.
WARNING
!
system. In addition, always wear approved
dust mask.
Your tool is equipped with a dust port for
dust extraction. To use this feature, attach
vacuum hose (optional accessory) to the
dust port, and connect the opposite end of
the hose to a shop vacuum cleaner.
Always make sure the vacuum cleaner that
you use is designed for extraction of
masonry dust.
The auxiliary handle, used to guide and
balance the tool can be bolted to either side
of the spindle housing depending on
personal preference and comfort. Always
use the auxiliary handle for maximum control
and ease of operation.
Tool Tips
Do not use water or other cooling fluid with
this tool for grinding.
Allow the tool to reach full speed before
applying it to the workpiece surface.
-8-
DUST EXTRACTION
This tool must only be used
with a dust extraction
AUXILIARY HANDLE