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Description (fi g. 1, 4)
WARNING: Never modify the power
tool or any part of it. Damage or
personal injury could result.
a. Trigger switch
b. Reversing lever
c. Chuck
d. Speed/mode selector collar
e. Side handle
f. Indicator light (DWD530, D21570)
g. Main handle
h. Date code
i. Chuck key (D21570)
j. Lock-on button
INTENDED USE
Your heavy-duty percussion drill has been designed
for professional drilling and hammerdrilling
applications.
The D21570 has been designed for professional dry
diamond drilling into masonry.
DO NOT use under wet conditions or in presence of
flammable liquids or gases.
These heavy-duty percussion drills are professional
power tools.
DO NOT let children come into contact with the
tool. Supervision is required when inexperienced
operators use this tool.
• This product is not intended for use by persons
(including children) suffering from diminished
physical, sensory or mental abilities; lack of
experience, knowledge or skills unless they are
supervised by a person responsible for their
safety. Children should never be left alone with
this product.
TRIGGER SWITCH (FIG. 3)
To start percussion drill, depress the trigger switch
(a). To stop percussion drill, release the trigger
switch.
VARIABLE SPEED (FIG. 3)
Variable speed permits speed control. The further
the trigger switch (a) is depressed, the higher the
speed of the percussion drill.
If necessary, press the lock-on button (j) for
continuous operation and release the switch. The
lock-on button works only in full speed, forward
rotation.
To stop the tool in continuous operation, press the
switch briefly and release it. Always turn the tool off
when work is finished and before unplugging.
NOTE: Use lower speeds for starting holes, drilling
in plastics or ceramics or for driving screws.
REVERSING LEVER (FIG. 3)
The reversing lever (b), located above the trigger
switch, changes the direction of rotation of the
percussion drill and is used when backing out
screws and jammed drill bits.
To operate the tool in reverse, release the trigger
switch (a) and push the lever to the left (when
viewed from the chuck end).
To operate the drill in forward, release the trigger
switch and push the lever to the right (when viewed
from the chuck end).
Return the reversing lever to the forward position
after all operations in reverse are completed.
HIGH/LOW SPEED OPERATION (FIG. 1, 5)
The two speed gear drive in the dual range
percussion drill permits effective operation over an
extended range of applications with greater selection
of accessories.
For LOW SPEED operation, turn the collar (d) to the
drill bit symbol for drilling position 1.
For HIGH SPEED operation, turn the collar (d) to the
drill bit symbol for drilling position 2.
The gear train has been designed for shifting only
when the unit is off. It may be necessary, however,
to rotate the chuck slightly by hand to align the
gears while turning the collar.
NOTICE: DO NOT ATTEMPT TO
CHANGE SPEEDS by turning the collar
when the tool is running. Doing so will
damage the gear train.
HAMMER/DRILL SELECTOR (FIG. 1, 5)
To switch the tool from the drilling mode to the
hammering mode (or vice-versa) rotate the collar (d)
to the applicable symbol as shown in figure 5.
Turn the collar (d) to the drill bit symbol for drilling or
to the hammer symbol for hammerdrilling, as shown
in the figure.
TORQUE LIMITING CLUTCH
This tool is equipped with a torque limiting clutch
that reduces the maximum torque reaction
transmitted to the operator in case of jamming of a
drill bit. This feature also prevents the gearing and
electric motor from stalling. The torque limiting clutch
has been factory-set and cannot be adjusted.
E-CLUTCH ANTI-LOCK CONTROL™ (FIG. 4)
DWD530, D21570
Your D
WALT drill may come with an electronic
E
feature called E-CLUTCH Anti-Lock Control™. It is
designed to help you control the drill during a stall
ENGLISH
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