Hart HPAG25 20V Manual Del Operador página 10

OPERATION
OPERATING THE GRINDER
See Figure 8, page 12.
Always carefully select and use grinding wheels that are
recommended for the material to be ground. Make sure
that the minimum operating speed of any accessory wheel
selected is 9,200 /min or more. The grinding wheel provided
with the grinder is suitable for grinding welds, preparing
surfaces to be welded, grinding structural steel, and grinding
stainless steel.
To operate the grinder:
 Secure all work in a vise or clamp to a workbench.
DANGER:
Never use the grinder with the guard removed. It has
been designed for use only with the guard installed.
Attempting to use grinder with guard removed will result
in loose particles being thrown against the operator
resulting in serious personal injury.
 Hold the grinder in front and away from you with both
hands, keeping the grinding wheel clear of the workpiece.
 Turn on the grinder and let the motor and grinding wheel
build up to full speed.
 Lower the grinder gradually until the grinding wheel
contacts the workpiece.
WARNING:
To prevent loss of control and possible serious personal
injury, always operate the grinder with both hands,
keeping one hand on the side handle.
 Keep the grinder tilted at an angle from 5° to 15° and
continuously moving at a steady, consistent pace.
NOTICE:
If the grinder is held in one spot too long, it will gouge
and cut grooves in the workpiece. If the grinder is held
at too sharp an angle, it will also gouge the workpiece
because of concentration of pressure on a small area.
 Use just enough pressure to keep the grinder from
chattering or bouncing.
NOTE: Heavy pressure will decrease the grinder's speed
and put a strain on the motor. Normally the weight of the tool
alone is adequate for most grinding jobs. Use light pressure
when grinding jagged edges or loose bolts where there is
the potential for the grinder to snag on the metal edge.
 Lift the grinder away from the workpiece before turning
off the grinder.
CUTTING WITH THE TOOL
See Figure 9 page 12.
It is important to understand the correct method for cutting
with this tool. Refer to the figure in this section to learn the
correct way to handle the tool during a cutting operation.
WARNING:
To maintain proper control, always operate the tool with
both hands, keeping one hand on the side handle. Loss
of control could cause an accident resulting in possible
serious injury.
WARNING:
Since wheel is exposed on underside of work, keep
hands and fingers away from cutting area. Any part of
your body coming in contact with moving wheel may
result in serious injury.
WARNING:
Do not grind with the side of the cutting wheel. Abrasive
cutting wheels are intended for peripheral grinding,
side forces applied to these wheels may cause them
to shatter.
To make the best possible cut:
 Clamp the workpiece firmly and cut close to the clamping
point to eliminate any vibration of the work. Cut the
workpiece using the peripheral edge of the cutting
wheel. When cutting conduit pipe or angle iron, clamp
the workpiece in a vise if possible and cut close to the
vise. To cut thin sheet material, "sandwich" the material
between hardboard or plywood and clamp the layers to
eliminate vibration and material tearing.
DANGER:
Never use the tool with the guard removed. It has been
designed for use only with the guard and guard insert
installed. Attempting to use tool with guard removed
will result in loose particles being thrown against the
operator resulting in serious personal injury.
 Remove the battery pack.
 Install cutting wheel and wheel guard with guard insert.
 Install the battery pack.
 Hold the tool in front and away from you with both hands,
keeping the cutting wheel clear of the workpiece.
 Turn the tool ON and let the motor and cutting wheel build
up to full speed.
 Move the cutting wheel into the workpiece.
NOTE: Do not force. Use only enough pressure to keep
the tool cutting. Let the wheel and tool do the work.
10 – English