DeWalt DCH481 Original Instructions Manual page 34

EngLIsH

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 side handle,
with the other hand on the main handle. Hold tool firmly with
both hands to control the twisting action of the drill.
Operation Modes (Fig. A, E)

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 5 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, F)

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 3 as required.
4. Place the bit/chisel on the desired location.
5. Depress the trigger switch
nOTE: Depending on your tool, depressing the trigger
switch activates a worklight
immediate work surface. Refer to Description. The worklight
will automatically turn off 20 seconds after the trigger
switch is released.
32
5 to select the
application
Dry diamond coring
Drilling into concrete and
masonry
Light chipping
6 .
5 , select the mode
.
4
10 designed to illuminate the
Recommendations for Tool Operation
• When drilling, always apply pressure in a straight line with
the bit, but do not push hard enough to stall the motor or
deflect the bit. A smooth even flow of material indicates the
proper drilling rate.
• Your hammer can be used for dry diamond drilling into
masonry up to 100 mm. For diamond drilling above this
diameter in masonry and regular large diameter diamond
drilling in masonry and concrete, we advise the use of
a dedicated diamond core drill. Follow the core bit or
manufacturer's recommendations for using the accessory.
nOTE: Always use core bits with integral centredrill systems
and ensure the RPM (speed) of the hammer does not
exceed the maximum rated RPM of the diamond core.
- Insert the centredrill into its holder in the centre of the
core bit.
- Remove and unplug the machine.
Remove the centredrill from its holder.
-
- Plug the machine in and insert the core bit into
the workpiece.

WARNING:
• Do not use this tool to mix or pump easily combustible
or explosive fluids (benzine, alcohol, etc.).
• Do not mix or stir inflammable liquids
labelled accordingly.
MAINTENANCE
Your D WALT power tool has been designed to operate
e
over a long period of time with a minimum of maintenance.
Continuous satisfactory operation depends upon proper tool
care and regular cleaning.

WARNING: To reduce the risk of serious personal
injury, turn tool off and disconnect battery pack
before making any adjustments or removing/
installing attachments or accessories. An accidental
start-up can cause injury.
The charger and battery pack are not serviceable.
Lubrication
Your power tool requires no additional lubrication.
Cleaning

WARNING: Blow dirt and dust out of the main housing
with dry air as often as dirt is seen collecting in and around
the air vents. Wear approved eye protection and approved
dust mask when performing this procedure.

WARNING: Never use solvents or other harsh chemicals
for cleaning the non-metallic parts of the tool. These
chemicals may weaken the materials used in these parts.
Use a cloth dampened only with water and mild soap.
Never let any liquid get inside the tool; never immerse any
part of the tool into a liquid.