its intended function. Check for misalignment and
seizure of moving parts, breakage of parts and any
other conditions that may affect its operation. Have
damaged guards or other defective parts repaired
or replaced as instructed. Do not use the tool if the
switch is defective. Have the switch replaced by an
authorized DeWALT repair agent.
20 Have your tool repaired by an authorized
DeWALT repair agent
This Power Tool is in accordance with the relevant
safety regulations. To avoid danger, electric appliances
must only be repaired by qualified technicians.
Package contents
The package contains:
1 Demolition hammer
1 Side handle
1 Tube of bit lubricant
1 Kitbox (K-models only)
1 Instruction manual
1 Exploded drawing
• Check for damage to the tool, parts or accessories
which may have occurred during transport.
• Take the time to thoroughly read and understand this
manual prior to operation.
Description (fig. A)
Your D25830 demolition hammer has been designed
for professional chipping, chiselling and demolition
applications.
1 On/off switch
2 Electronic speed and impact control dial
3 Service indicator LED
4 Mode selector switch
5 Safety lock
6 Tool holder
7 Collar
8 Side handle
9 Side handle clamp knob
10 Rear handle
Soft start feature
The soft start feature allows the impact rate to build up
more slowly, thus preventing the chisel or point from
"bouncing" around on the masonry when starting up.
6
Electronic impact energy control (fig. B)
The electronic impact energy control (3) offers the
following advantages:
- use of smaller accessories without risk of breakage
- minimised break-out when chiselling soft or brittle
materials
- optimal tool control for precise chiselling
Service indicator LED (fig. B)
The red service indicator LED (3) lights up when the
carbon brushes are nearly worn out to indicate that the
tool needs servicing. After a further 8 hours of use the
motor will automatically be shut off. The carbon brushes
are not user-serviceable. Take the tool to an authorized
DeWALT repair agent.
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 50144; therefore no
earth wire is required.
Using an extension cable
If an extension cable is required, use an approved
extension cable suitable for the power input of this tool
(see technical data). The minimum conductor size is
1.5 mm2. When using a cable reel, always unwind the
cable completely. Also refer to the table below.
Conductor size (mm2)
0.75
1.00
1.50
2.50
4.00
Cable length (m)
Voltage
Amperes
120V~
0 - 2.0
2.1 - 3.4
3.5 - 5.0
5.1 - 7.0
7.1 - 12.0
12.1 - 20.0
E N G L I S H
Cable rating (Amperes)
6
10
15
20
25
7.5 15 25 30 45 60
Cable rating (Amperes)
6
6
6
6
6 10
6
6
6
6 15 15
6
6 10 15 20 20
10 10 15 20 20 25
15 15 20 25 25
20 20 25
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