DeWalt DW983 - Maintenance

without the bit skipping out. Operate at full on after starting the bit.
Drilling in Wood
Start drilling with slow speed and increase to full power while applying
firm pressure to the tool. Holes in wood can be made with the same
twist drills used for metal. These bits may overheat unless pulled out
frequently to clear chips from the flutes. For larger holes, use low
speed wood bits. Work that is likely to splinter should be backed up
with a block of wood.
Drilling in Metal
Start drilling with slow speed and increase to full power while applying
firm pressure on the tool. A smooth even flow of metal chips indicates
the proper drilling rate. Use a cutting lubricant when drilling metals. The
exceptions are cast iron and brass which should be drilled dry.
NOTE: Large (5/16” to 1/2”) holes in steel can be made easier if a pilot
hole (5/32” to 3/16”) is drilled first.
Drilling in Masonry
(Tools without a hammer feature)
Use carbide tipped bits rated for percussion drilling and be certain that
the bit is sharp. Use a constant and firm force on the tool to drill most
effectively. A smooth, even flow of dust indicates the proper drilling
rate.
Operation as a Hammerdrill
Some models have the Hammerdrill feature. To utilize the hammer
feature of your tool, rotate the collar to align the hammer symbol with
the arrow shown in FIG.3. The hammering position is for hammer
drilling in soft concrete and masonry such as brick, mortar and soft
ceramics.
1. When drilling, use just enough force on the hammer to keep it
from bouncing excessively or “rising” off the bit. Too much force will
cause slower drilling speeds, overheating, and a lower drilling rate.
2. Drill straight, keeping the bit at a right angle to the work. Do not
exert side pressure on the bit when drilling as this will cause
clogging of the bit flutes and a slower drilling speed.
3.
When
drilling
deep
holes,
if
the
hammer
speed
starts
to
drop
off,
pull
the
bit
partially
out
of
the
hole
with
the
tool
still
running
to
help
clear
debris from the hole.
4. Do not pour water into the hole to settle dust. Water causes
clogging of bit flutes which will tend to make the bit bind in the hole.
Operation as a Screwdriver
Select the desired speed/torque range using the 3 speed gear shift
lever on the top of tool to match the speed and torque to the planned
operation.
Insert
the
desired
fastener
accessory
into
the
chuck
as
you
would
any
drill
bit.
Set
the
torque
adjustment
collar
(FIG.
3).
Make
a
few
practice
runs
in
scrap
or
unseen
areas
to
determine
the
proper
position of the clutch collar.
Maintenance
A\
CLEANING:
With
the
motor
running,
blow
dirt
and
dust
out
of
all
air
vents
with
dry
air
at
least
once
a
week.
Wear
safety
glasses
when
performing
this.
Exterior
plastic
parts
may
be
cleaned
with
a
damp
cloth
and
mild
detergent.
Although
these
parts
are
highly
solvent
resistant, NEVER use solvents.
Charger Cleaning Instructions:
A\
WARNING:
Disconnect
the
charger
from
the
AC
outlet
before
cleaning.Dirt
and
grease
may
be
removed
from
the
exterior
of
the
charger
using
a
cloth
or
soft
non-metallic
brush.
Do
not
use
water
or
any cleaning solutions.
Important
To
assure
product
SAFETY
and
RELIABILITY,
repairs,
maintenance
and
adjustment
(including
brush
inspection
and
replacement)
should
be
performed
by
certified
service
centers
or
other
qualified
service
organizations,
always
using
identical
replacement
parts.
Accessories
Recommended
accessories
for
use
with
your
tool
are
available
at
extra