DeWalt DCH253 Original Instructions

16
ENGLISH
It may be necessary to briefly run the motor after
having changed from chiselling to rotary modes in
order to align thegears.
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 DEWALT power tool has been designed to
operate 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.
This machine is not user-serviceable. Take the
tool to an authorised DEWALT repair agent after
approximately 40 hours of use. If problems occur
before this time contact an authorised DEWALT
repairagent.
The charger and battery pack are not serviceable.
There are no serviceable partsinside.
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
5. Place the drill bit on the spot and switch on
thetool.
ROTARY DRILLING (FIG.1)
1. Set the mode selector switch(c) to the "rotary
drilling"position.
2. Depending on your tool, follow either of the
following instructions:
– Fit a chuck adaptor/chuck assembly
(DCH143, DCH243, DCH253, DCH273).
Special SDS Plus
®
adaptors with threaded
sections are available for use with standard
10 or 13 mm chucks to enable straight shank
bits to beused.
– Replace the SDS Plus
®
tool holder with the
keyless chuck (DCH254, DCH274).
3. Proceed as described for rotaryhammering.
WARNING: Never use standard chucks
in the rotary hammeringmode.
SCREWDRIVING (FIG.1)
1. Set the mode selector switch(c) to the "rotary
drilling"position.
2. Select the direction ofrotation.
3. Depending on your tool, follow either of the
following instructions:
– Insert the special SDS Plus
®
screwdriving
adaptor for use with hexagonal screwdriver
bits (DCH143, DCH243, DCH253, DCH273).
– Replace the SDS Plus
®
tool holder with the
keyless chuck (DCH254, DCH274).
4. Insert the appropriate screwdriver bit. When
driving slotted head screws always use bits with
a findersleeve.
5. Gently press the variable speed switch(a) to
prevent damage to the screw head. In reverse
(LH) rotation the tool speed is automatically
reduced for easy screwremoval.
6. When the screw is flush with the workpiece,
release the variable speed switch to prevent
the screw head from penetrating into
theworkpiece.
CHIPPING (FIG.1)
1. Set the mode selector switch(c) to the
"hammering only"position.
2. Insert the appropriate chisel and check if it is
properlylocked.
3 Adjust the side handle(e) asrequired.
4. Switch on the tool and startworking.

DeWalt DCH253 Specifications

General

Power source	Battery
Battery voltage	18 V
Impact rate	4500 bpm
Rated speed (max)	1200 RPM
Impact energy (max)	2.1 J
Drilling diameter in wood (max)	26 mm
Drilling diameter in steel (max)	13 mm
Vibration level (metal drilling)	2.5 m/s²
Vibration level (hammer drilling)	6.6 m/s²
Drilling diameter in concrete (max)	24 mm
Reverse	Yes
Product color	Black, Yellow

Weight and Dimensions

Depth	301 mm
Width	85 mm
Height	202 mm
Weight	2500 g