Operation Manual

ENGLISH
27
Service Indicator LEDs (fi g. 2)
The yellow brushwear indicator LED (e) 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 (d)
lights up 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 (fi g. 1)
The dampers in the main handle (m) absorb the
vibrations transmitted to the user. This improves user
comfort during the operation.
Active Vibration Control
D25701, D25730
The active vibration control neutralises rebound
vibration from the hammer mechanism. Lowering
hand and arm vibration, it allows more comfortable
use for longer periods of time and extends the life of
the unit.
Electrical Safety
The electric motor has been designed for one
voltage only. Always check that the power supply
corresponds to the voltage on the rating plate.
Your DEWALT tool is double insulated in
accordance with EN 60745; therefore no
earth wire is required.
WARNING: 115 V units have to
be operated via a fail-safe isolating
transformer with an earth screen
between the primary and secondary
winding.
If the supply cord is damaged, it must be replaced
by a specially prepared cord available through the
D
EWALT service organisation.
Mains Plug Replacement
(U.K. & Ireland Only)
If a new mains plug needs to be fitted:
• Safely dispose of the old plug.
• Connect the brown lead to the live terminal in
the plug.
• Connect the blue lead to the neutral terminal.
WARNING: No connection is to be
made to the earth terminal.
Follow the fitting instructions supplied with good
quality plugs. Recommended fuse: 13 A.
Using an Extension Cable
An extension cord should not be used unless
absolutely necessary. Use an approved extension
cable suitable for the power input of this tool
(see technical data). The minimum conductor size is
1 mm
2
; the maximum length is 30 m.
When using a cable reel, always unwind the cable
completely.
ASSEMBLY AND ADJUSTMENTS
WARNING: To reduce the risk of
injury, turn unit off and disconnect
machine from power source before
installing and removing accessories,
before adjusting or changing set-ups
or when making repairs. Be sure the
trigger switch is in the OFF position. An
accidental start-up can cause injury.
Inserting and Removing SDS Max
®
Accessories (fi g. 3A, 3B)
This machine uses SDS Max
®
drill bits and chisels
(refer to the inset in figure 3B for a cross-section of
an SDS Max
®
bit shank).
1. Clean and grease the bit shank.
WARNING: Only apply a slight amount
of lubricant to the bit shank. Do not
apply lubricant to the machine.
2. Insert the bit shank into the tool holder (h),
and press and turn the bit slightly until the
sleeve snaps into position.
3. Pull on the bit to check if it is properly locked.
The hammering function requires the bit to be
able to move axially several centimetres when
locked in the tool holder.
4. To remove a bit pull back the tool holder locking
sleeve (h) and pull the bit out of the tool holder.
Selecting the Operating Mode
(fi g. 4A, 4B)
The tool can be used in two operating modes (fig. 4A):
Hammerdrilling: for concrete, brick,
stone and masonry drilling operations.
Hammering only: for chiselling and
demolition applications. In this mode the
tool can also be used as a lever to free a
jammed drill bit.
1. To select the operating mode, rotate the mode
selector switch (g) until it points to the symbol of
the required mode.