DeWalt DWE4020 Manual De Instrucciones página 52

NOTICE: Failure to properly seat the wheel hub before turning the
tool on may result in damage to tool or wheel.
USING WIRE CUP BRUSHES AND WIRE WHEELS (FIG 13, 14)
Wire wheels and brushes can be used forremoving rust, scale and
paint, and for smoothing irregular surfaces.
1. Allow the tool to reach full speed before
touching the tool to the work surface.
2. Apply minimum pressure to work surface,
allowing the tool to operate at high
speed. Material removal rate is greatest
when the tool operates at high speed.
3. Maintain a 5˚ to 10˚ angle between the tool and work surface for
wire cup brushes.
4. Maintain contact between the edge of the wheel and the work
surface with wire wheels.
5. Continuously move the tool in a forward and
back motion to avoid creating gouges in the
work surface. Allowing the tool to rest on the
work surface without moving, or moving the
tool in a circular motion causes burning and
swirling marks on the work surface.
6. Remove the tool from the work surface before turning the tool off.
Allow the tool to stop rotating before setting it down.
CAUTION: Use extra care when working over an edge, as a
sudden sharp movement of grinder may be experienced.
Mounting and Using Cutting
(Type 1) Wheels
Cutting wheels include diamond wheels and abrasive discs. Abrasive
cutting wheels for metal and concrete use are available. Diamond
blades for concrete cutting can also be used.
WARNING: A closed, 2-sided cutting wheel guard is not included
with this tool but is re quired when using cutting wheels. Fail ure to use
proper flange and guard can re sult in injury resulting from wheel
breakage and wheel contact. See page 49 for more information.
MOUNTING CLOSED (TYPE 1) GUARD (FIG. 15 – 17)
NOTE: If present, the One-Touch™ guard lever, screw, and spring
should be removed before attempting to mount the guard.
FIG. 13
1. Open the guard latch (O). Align the
lugs (P) on the guard with the slots
(Q) on the gear case.
2. Push the guard down until the guard
5˚–10˚ lug engages and rotates freely in the
groove on the gear case hub.
3. Rotate guard (F) into desired
working position. The guard body
should be positioned between the
spindle and the operator to provide
maximum operator protection.
FIG. 14
4. Close the guard latch to secure the
guard on the gear case cover. You
should be unable to rotate the guard by
hand when the latch is in closed
position. If rotation is possible, tighten
the adjusting screw (R) with clamp lever
in the closed position. Do not operate
grinder with a loose guard or clamp
lever in open position.
5. To remove the guard, open the guard latch, rotate the guard so
that the arrows are aligned and pull up on the guard.
NOTE: If, after a period of time, the guard becomes
loose, tighten the adjusting screw (R) with the
clamp lever in the closed position.
NOTICE: Do not tighten adjusting screw with
clamp lever in open position. Undetectable
damage to guard or mounting hub may result.
50
FIG. 15
Q Q Q Q
P
O
FIG. 16
F
FIG. 17
R