Prior To Operation - DeWalt DWE4235 Original Instructions Manual

English

CAUTION: To reduce the risk of personal injury, wear
work gloves when handling wire brushes and wheels. They
can become sharp.

CAUTION: To reduce the risk of damage to the tool,
wheel or brush must not touch guard when mounted or
while in use. Undetectable damage could occur to the accessory,
causing wires to fragment from accessory wheel or cup.
Wire cup brushes or wire wheels install directly on the threaded
spindle without the use of flanges. Use only wire brushes or
wheels provided with a M14 threaded hub. These accessories
are available at extra cost from your local dealer or authorised
service centre.
1. Place the tool on a table, guard up.
2. Thread the wheel on the spindle
16
3. Depress spindle lock button
hub of the wire wheel or brush to tighten the wheel.
4. To remove the wheel, reverse the above procedure.
NOTICE: To reduce the risk of damage to the tool, properly seat
the wheel hub before turning the tool on.

Prior to Operation

• Install the guard and appropriate disc or wheel. Do not use
excessively worn discs or wheels.
• Be sure the inner and outer flange are mounted correctly.
Follow the instructions given in the Accessory and Guard
Applications Chart.
• Make sure the disc or wheel rotates in the direction of the
arrows on the accessory and the tool.
• Do not use a damaged accessory. Before each use inspect
the accessory such as abrasive wheels for chips and cracks,
backing pad for cracks, tear or excess wear, wire brush for
loose or cracked wires. If power tool or accessory is dropped,
inspect for damage or install an undamaged accessory. After
inspecting and installing an accessory, position yourself and
bystanders away from the plane of the rotating accessory and
run the power tool at maximum no‑load speed for one minute.
Damaged accessories will normally break apart during this
test time.
OPERATION
Instructions for Use

WARNING: Always observe the safety instructions and
applicable regulations.

WARNING: To reduce the risk of serious personal
injury, turn tool off and disconnect tool from power source
before making any adjustments or removing/installing
attachments or accessories. Be sure the trigger switch is in the
OFF position. An accidental start-up can cause injury.

WARNING:
• Ensure all materials to be ground or cut are secured in place.
• Secure and support the workpiece. Use clamps or a vise to hold
and support the workpiece to a stable platform. It is important to
clamp and support the workpiece securely to prevent movement
of the workpiece and loss of control. Movement of the workpiece
or loss of control may create a hazard and cause personal injury.
• Support panels or any oversized workpiece to minimize
the risk of wheel pinching and kickback. Large workpieces
tend to sag under their own weight. Supports must be placed
under the workpiece near the line of cut and near the edge of the
workpiece on both sides of the wheel.
• Always wear regular working gloves while operating this tool.
12
by hand.
2
and use a wrench on the
1 20
• The gear becomes very hot during use.
• Apply only a gentle pressure to the tool. Do not exert side
pressure on the disc.
• Always install the guard and appropriate disc or wheel. Do not
use excessively worn disc or wheel.
• Be sure the inner and outer flange are mounted correctly.
• Make sure the disc or wheel rotates in the direction of the arrows
on the accessory and the tool.
• Avoid overloading. Should the tool become hot, let it run a few
minutes under no load condition to cool the accessory. Do not
touch accessories before they have cooled. The discs become very
hot during use.
• Never work with the grinding cup without a suitable protection
guard in place.
• Do not use the power tool with a cut-off stand.
• Never use blotters together with bonded abrasive products.
• Be aware, the wheel continues to rotate after the tool is
switched off.
Proper Hand Position (Fig. G)

WARNING: To reduce the risk of serious personal injury,
ALWAYS use proper hand position as shown.

WARNING: To reduce the risk of serious personal injury,
ALWAYS hold securely in anticipation of a sudden reaction.
Proper hand position requires one hand on the side handle
with the other hand on the body of the tool, as shown in Fig. G.
Variable Speed Dial (Fig. A)
DWE4257
The variable speed dial offers added tool control and enables
the tool to be used at optimum conditions to suit the accessory
and material.
• Turn the variable speed dial
dial upward for higher speed and downwards for lower speed.
Slider Switch (Fig. A)

CAUTION: Hold the side handle and body of the tool firmly to
maintain control of the tool at start up and during use and until
the wheel or accessory stops rotating. Make sure the wheel has
come to a complete stop be fore laying the tool down.
nOTE: To reduce unexpected tool movement, do not switch
the tool on or off while under load conditions. Allow the grinder
to run up to full speed before touching the work surface. Lift the
tool from the surface before turning the tool off. Allow the tool
to stop rotating before putting it down.

WARNING: Before connecting the tool to a power supply,
be sure the slider switch is in the off position by pressing the
rear part of the switch and releasing. Ensure the slider switch is
in the off position as described above after any interruption in
power supply to the tool, such as the activation of a ground fault
interrupter, throwing of a circuit breaker, accidental unplugging,
or power failure. If the slider switch is locked on when the power is
connected, the tool will start unexpectedly.
To start the tool, slide the ON/OFF slider switch
the front of the tool. To stop the tool, release the ON/OFF
slider switch.
For continuous operation, slide the switch toward the front of
the tool and press the forward part of the switch inward. To stop
the tool while operating in continuous mode, press the rear part
of the slider switch and release.
8 to the desired level. Turn the
toward
7
,
3