5
Electronic Speed and Impact Control
(Fig. 1, 3)
The electronic speed and impact control (G) offers the following advantages:
– use of smaller accessories without risk of breakage;
– minimised break-out when chiselling or drilling in soft or brittle materials;
– optimal tool control for precise chiselling.
Torque Limiting Clutch
The torque limiting clutch 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.
Complete Torque Control (Fig. 3)
NOTICE:
Always turn the tool off before changing torque control settings or
damage to tool may result.
The Complete Torque Control (CTC) feature of this tool is designed to provide
additional control with a two-stage clutch mechanism. Refer to
Setting the Torque
Control Switch
for more information.
Service Indicator LEDs (Fig. 3)
The yellow brushwear indicator LED (S) lights up when the carbon brushes are nearly
worn out to indicate that the tool needs servicing within the next 8 hours of use.
The red service indicator LED (T) lights up if the lock-on button (B) is used in any
mode except the chipping mode. In all models with the adaptive drill control (ADC),
the red indicator LED (T) lights up if the ADC is engaged. The red indicator starts to
flash if there is a fault with the tool or the brushes have completely worn out (refer to
Brushes
under
Maintenance
).
Fully Vibration-dampened Main Handle (Fig. 1)
The dampers in the side handle (C) absorb the vibrations transmitted to the user. This
improves user comfort during the operation.
SAVE THESE INSTRUCTIONS FOR FUTURE USE
Motor
Your D
E
WALT tool is powered by a D
E
WALT-built motor. Be sure your power supply
agrees with the nameplate markings. Voltage decrease of more than 10% will cause
loss of power and overheating. All D
E
WALT tools are factory tested.
COMPONENTS (Fig. 1, 2)
WARNING:
Never modify the power tool or any part of it. Damage or personal
injury could result.
A. Trigger switch
L. Bush
B. Lock-on slider
M. Tool holder
C. Side handle
N. Pin
D. Main handle
O. Collar
E. Active vibration control
P. Locking sleeve
F. Mode selector switch
Q. Side handle knob
G. Electronic speed and impact control dial
H. Clamp wheel
I. Rear side handle position
J. Side handle clamp
K. Steel ring
INTENDED USE
Your rotary hammer has been designed for professional rotary drilling and chipping
applications.
DO NOT
use under wet conditions or in presence of flammable liquids or
gasses.
This heavy-duty rotary hammer is a professional power tool.
DO NOT
let children
come into contact with the tool. Supervision is required when inexperienced operators
use this tool.
Soft Start Feature
The soft start feature allows the speed to build up speed slowly, thus preventing the
drill bit from walking off the intended hole position when starting.
The soft start feature also reduces the immediate torque reaction transmitted to the
gearing and the operator if the hammer is started with the drill bit in an existing hole.
