Bosch X-LOCK GWX18V-10P Operating Instructions Manual page 25

Hold the tool with both
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 contact-
ing 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.
Paddle Switch
The Paddle Switch (Fig. 20, 2) has a Lock-OFF
feature to help prevent accidental startups.
To turn tool ON:
Push Lock-Off Switch (3) forward to unlock the
Paddle Switch, then squeeze Paddle Switch.
To turn tool OFF:
Release pressure on Paddle Switch (2). The
Paddle Switch is spring loaded and will return
to the OFF position automatically.
Fig. 20
2
Operating Instructions
3
Grinding
maximum safe operating speed is not exceed-
ed by the nameplate speed of the grinder. Do
not exceed the recommended wheel diameter.
Grinding wheels should be carefully selected
in order to use the grinder most efficiently.
Wheels vary in type of abrasive, bond, hard-
ness, grit size and structure. The correct wheel
to use is determined by the job. Use disc grind-
ing wheels for fast grinding of structural steel,
heavy weld beads, steel casting, stainless steel
and other ferrous metals.
1. Allow the tool to reach full speed before
touching the tool to the work surface.
2. Apply minimum pressure to the work sur-
face, allowing the tool to operate at high
speed. Grinding rate is greatest when the
tool operates at high speed.
3. Maintain a 10° to 15° angle between the
tool and work surface, (Fig. 21).
Fig. 21
grinding action and put dangerous stresses on
the wheel.
4. Continuously move the tool at a moderate
speed to avoid creating gouges in the work
surface.
5. Remove the tool from work surface before
turning tool off. Allow the tool to stop
rotating before laying it down.
Tip: When grinding with a new wheel be cer-
tain to grind while pulling tool backwards until
the wheel becomes rounded on its edge. New
wheels have sharp edges which tend to "bite"
or cut into the work piece when pushed for-
ward.
-25-
Before using a
wheel, be certain that its
Excessive or sudden pres-
sure on the wheel will slow
grinding