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ENGLISH
p Locking collar
q. Keyless chuck (DCH254, DCH274)
r. Belt hook (DCH273, DCH274)
s. Active vibration control (DCH273, DCH274)
t. Dust extraction system electrical connection
u. Mode selector button
INTENDED USE
Your DCH143, DCH243, DCH253, DCH254,
DCH273 and DCH274 cordless rotary hammerdrills
have been designed for professional drilling and
hammerdrilling applications, as well as screwdriving
and chippingapplications.
DO NOT use under wet conditions or in presence of
flammable liquids orgases.
These hammerdrills are professional powertools.
DO NOT let children come into contact with the
tool. Supervision is required when inexperienced
operators use thistool.
• Young children and the infirm. This appliance
is not intended for use by young children or
infirm persons without supervision.
• 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
thisproduct.
Electrical Safety
The electric motor has been designed for one
voltage only. Always check that the battery pack
voltage corresponds to the voltage on the rating
plate. Also make sure that the voltage of your
charger corresponds to that of yourmains.
Your DEWALT charger is double insulated
in accordance with EN 60335; therefore
no earth wire isrequired.
If the supply cord is damaged, it must be replaced
by a specially prepared cord available through the
DEWALT serviceorganization.
Mains Plug Replacement
(U.K. & Ireland Only)
If a new mains plug needs to be fitted:
• Safely dispose of the oldplug.
• Connect the brown lead to the live terminal in
theplug.
• Connect the blue lead to the neutralterminal.
Do not incinerate the battery pack.
Package Contents
The package contains:
1 Cordless rotary hammerdrill
1 Side handle and depth rod
1 Charger
1 Battery pack (D1, L1, M1, P1)
2 Battery packs (D2, L2, M2, P2)
3 Battery packs (D3, L3, M3, P3)
1 Keyless chuck (DCH254, DCH274)
1 Kit box
1 Instruction manual
NOTE: Battery packs and chargers are not included
with N-models.
• Check for damage to the tool, parts or
accessories which may have occurred
duringtransport.
• Take the time to thoroughly read and
understand this manual prior tooperation.
Description (fi g.1, 3, 7)
WARNING: Never modify the power
tool or any part of it. Damage or
personal injury couldresult.
a. Variable speed switch
b. Forward/reverse button
c. Mode selector
d. Worklight (DCH143, DCH253, DCH254,
DCH273, DCH274)
e. Side handle
f. Battery pack
g. Release button
h. Main handle
i. Drill bit symbol (rotary drilling mode)
j. Hammerdrilling symbol (rotary hammering
mode)
k. Hammer symbol (hammering only mode)
l. SDS Plus
®
tool holder
m. Sleeve
n. Fuel gauge button
o. Dust cover