DeWalt DCH243 Traducción De Las Instrucciones Originales página 40

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SDS Plus Bit Holder (Fig. F)
nOTE: Special adapters are needed to use the SDS plus tool
holder with straight shank bits and hexagonal screwdriver bits.
Refer to Optional Accessories.
To Insert a Drill Bit or Other accessory
1. Insert the shank of the bit about 19 mm into SDS Plus
tool holder.
2. Push and rotate bit until it locks in place. The bit will be
securely held.
3. To release bit, pull the sleeve
Keyless Chuck (Fig. F, G)
DCH254, DCH274
On some hammerdrills, a keyless chuck can be installed in place
of the SDS Plus bit holder.

WARNING: Never use standard chucks in the rotary
hammering mode.
Replacing the sDs Plus Bit Holder with the keyless Chuck
(Fig. G)
1. Select hammering only mode (see Operation Modes), this
locks the spindle to prevent it from rotating when unlocking
the removable tool holder.
2. Turn the locking collar 15
pull the installed bit holder off.
3. Push the keyless chuck
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the locking collar into the locking position.
4. To replace the keyless chuck with the SDS Plus bit holder,
first remove the keyless chuck the same way as the SDS
Plus bit holder was removed. Then replace the SDS Plus
bit holder the same way as the keyless chuck was replaced.
To Insert a Drill Bit or Other accessory in keyless Chuck
(Fig. F)
1. Grasp the sleeve of the chuck with one hand and use
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the other hand grasping the base of the chuck.
2. Rotate the sleeve counterclockwise (as viewed from the
front) far enough to accept the desired accessory.
3. Insert the accessory about 19 mm into the chuck and tighten securely by rotating the chuck sleeve clockwise
with one hand while holding the tool with the other hand.
Continue to rotate the chuck sleeve until several ratchet
clicks are heard to ensure full gripping power.
Be sure to tighten chuck with one hand on the chuck sleeve and
one hand holding the tool for maximum tightness.
To release the accessory, repeat Steps 1 and 2 above.
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 battery pack before making any adjustments or removing/
installing attachments / accessories or when making
repairs. An accidental start-up can cause injury.
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back and remove the bit.
10
into the unlocked position and
onto the spindle and turn
17
Proper Hand Position (Fig. E)

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 main handle
with the other hand on the side handle
Operation Modes (Fig. A)

WARNING: Do not select the operating mode when the
tool is running.
Your tool is equipped with a mode selector dial
mode appropriate to desired operation.
symbol Mode
Rotary Drilling
Rotary
Hammering
Hammering
only
To select an Operating Mode
1. Depress the mode selector release button
2. Rotate the mode selector dial so that the arrow points to the
symbol corresponding with the desired mode.
nOTE: The mode selector 3 must be in rotary drilling, rotary
hammering or hammering only mode at all times. There are no
operable positions in between. It may be necessary to briefly
run the motor after having changed from 'hammering only' to
'rotary' modes in order to align the gears.
Performing an Application (Fig. A)

WARNING: 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.

WARNING: Always wait until the motor has come to
a complete standstill before changing the direction
of rotation.
1. Choose and install the appropriate chuck, adapter, and/or
bit onto to the tool. Refer to Bit and Bit Holders.
2. Using the mode selector dial
appropriate to desired application. Refer to
Operation Modes.
3. Adjust the side handle 5 as required.
4. Place the bit/chisel on the desired location.
5. Select the direction of rotation using the forward/reverse
button 2 . When changing the position of the control button, be sure the trigger is released.
To select forward rotation, press the for ward/re verse
-
control button on the right side of the tool.
8 ,
5 .
to select the
3
application
Screwdriving
Drilling into steel, wood
and plastics
Drilling into concrete and
masonry
Light chipping
4 .
3 , select the mode