DeWalt DWD522 Original Instructions Manual page 24

EnGLIsH
Variable Speed (Fig. C)
Variable speed permits speed control. The further the
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trigger switch is depressed, the higher the speed of the
percussion drill.
If necessary, press the lock-on button
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. C)
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The reversing lever , 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
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. A, D)
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
symbol for drilling position 1.
For HIGH sPEED operation, turn the collar
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. A, D)
To switch the tool from the drilling mode to the hammering
mode (or vice-versa) rotate the collar
symbol as shown in Figure D.
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Turn the collar 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.
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for continuous
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and
4 to the drill bit
4
to the drill bit
4
to the applicable
ASSEMBLY AND ADJUSTMENTS

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.
Side Handle (Fig. B)

WARNING: To reduce the risk of personal injury,
ALWAYS operate the tool with the side handle
properly installed. Failure to do so may result in the side
handle slipping during tool operation and subsequent loss
of control. Hold tool with both hands to maximize control.
5
A side handle is supplied with this percussion drill. It clamps
to the front of the gear case as shown in Figure B and can be
rotated 360˚ for right- or left- hand use.
After the side handle is rotated into position, it should be
pushed rearward until the slots
are aligned with and fully engaged with the projecting tabs
on the underside of the gear case. The side handle is then
securely clamped by turning clockwise until tight.
OPERATION
Instructions for Use

WARNING: To reduce the risk of injury, turn unit
off and disconnect machine from power source
before installing and removing accessories, before
adjusting or changing set-ups or when making
repairs. Be sure the trigger switch is in the OFF position.
An accidental start-up can cause injury.

WARNING: Always observe the safety instructions and
applicable regulations.
To reduce the risk of personal injury, ALWAYS
•
ensure workpiece is anchored or clamped firmly.
If drilling thin material, use a wood "back-up" block to
prevent damage to the material.
To reduce the risk of personal injury, always
•
operate the tool with the side handle properly
installed. Failure to do so may result in the side
handle slipping during tool operation and subsequent
loss of control. Hold tool with both hands to
maximize control.
• Do not attempt to tighten or loosen drill bits (or any
other accessory) by gripping the front part of the
chuck and turning the tool on. Damage to the chuck
and personal injury may occur.
Burn Hazard. ALWAYS wear gloves when changing
•
bits. Accessible metal parts on the tool and bits may
get extremely hot during operation. Small bits of
broken material may damage bare hands.
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on the lip of the side handle
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