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DeWalt D25404K T-3 Manual

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ENGLISH
28
Proper Hand Position (fi g. 1, 7)
WARNING: To reduce the risk of
serious personal injury, ALWAYS use
proper hand position as shown.
WARNING: To reduce the risk of
serious personal injury, ALWAYS hold
securely in anticipation of a sudden
reaction.
Proper hand position requires one hand on the
side handle (h), with the other hand on the main
handle (l).
Switching On and Off (fig. 1)
To run the tool, press the variable speed switch (a).
The pressure exerted on the variable speed switch
determines the tool speed.
To stop the tool, release the switch.
Hammerdrilling (fig. 1)
DRILLING WITH A SOLID BIT
1. Set the mode selector switch (b) to the
“hammerdrilling” position.
2. Insert the appropriate drill bit. For best results
use high quality carbide-tipped bits.
3. Adjust the side handle (h) as required.
4. If necessary, set the drilling depth.
5. Mark the spot where the hole is to be drilled.
6. Place the drill bit on the spot and switch on the
tool.
7. Always switch off the tool when work is finished
and before unplugging.
Drilling with a Core Bit
1. Set the mode selector (b) to the “hammer
drilling” position.
2. Adjust the side handle (h) as required.
3. Insert the appropriate core bit.
4. Assemble the centerdrill into the core bit.
5. Place the centerdrill on the spot and press the
variable speed switch (a). Drill until the core
penetrates into the concrete approx. 1 cm.
6. Stop drilling and remove the centerdrill. Place
the core bit back into the hole and continue
drilling.
7. When drilling through a structure thicker than
the depth of the core bit, break away the round
cylinder of concrete or core inside the bit at
regular intervals. To avoid unwanted breaking
away of concrete around the hole, first drill a
hole the diameter of the centerdrill completely
through the structure. Then drill the cored hole
halfway from each side.
8. Always switch off the tool when work is finished
and before unplugging.
Rotary Drilling (fig. 1)
1. Set the mode selector switch (b) to the “rotary
drilling” position.
2. Replace the tool holder with the chuck
(DT7018).
3. Proceed as described for hammerdrilling.
WARNING: Never use standard chucks
in the hammerdrilling mode.
Chipping and Chiselling (fig. 1)
1. Set the mode selector switch (b) to the
hammering only position.
2. Insert the appropriate chisel and rotate it by
hand to lock it into one of 24 positions.
3. Adjust the side handle (h) as required.
4. Switch on the tool and start working.
5. Always switch off the tool when work is finished
and before unplugging.
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
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.
• 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 tool will automatically switch off when the
carbon brushes are worn.
… 30 …


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