DeWalt DFD270 Guide D'utilisation page 8

English
Power Adjustment (Fig. A)
The power adjustment mechanism of the DFD270 allows
the user to adjust the penetration of the fastener through
the fixture ensuring a precise fastening. To operate the
power adjustment mechanism, press and hold the power
adjustment dial release button
adjustment dial 3 in the + or – direction to increase or
decrease the power of the tool.
• 1 ‑ minimum power
• 2–3 ‑ medium power
• 4 ‑ maximum power
nOTE: Always start with minimum power. If the fastener
does not penetrate deep enough, increase the power.
Utility Hook (Fig. D)

WARNING: The hook is only designed for hanging the
tool itself and not intended for hanging excess weight.
Over‑hanging weight on the hook could cause injuries
and damage to the tool.
Your powder‑accuated fastening tool comes with a utility
hook that can be flipped down from the side of the tool
14
for use, or flipped up when not needed.
Fig. D
14
OPERATION

WARNING: To reduce the risk of serious personal
injury, remove loads and fasteners before
making any adjustments or removing/installing
attachments or accessories. An accidental
actuation can cause injury.

CAUTION: Be sure to read and understand all of the
safety precautions and training in this manual before
attempting to operate the tool. Check to be sure the
tool is not loaded, the piston moves freely within the
barrel, and no foreign objects or fasteners are in the
barrel. Perform the daily function test before using
the tool.
Proper Hand Position (Fig. E)

WARNING: To reduce the risk of serious personal injury,
ALWAYS use proper hand position as shown.
6
4 and move the power

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 handle
and one hand on top of the tool.
Fig. E
Fastener Functioning
Prior to learning the safe operating procedures for this
tool, it is important to understand how a powder‑actuated
fastener works. A powder‑actuated fastener is considered
to be a direct drive or forced entry type of fastener because
it is driven directly into the base material. The driving action
causes tremendous forces to be applied to the fastener.
D WALT powder‑actuated fasteners are specially designed
e
and manufactured to withstand the forces imposed during
the driving operation. Only fasteners manufactured or
supplied by D WALT should be used in this tool.
e
Suitable Base Material

WARNING: Failure to follow the warnings and
instruction may result in severe injury or death to the
tool operator and/or bystanders.
Powder‑actuated fasteners can be used successfully
in concrete, certain masonry materials, and A 36 steel,
but some materials are not suitable. Never guess when
fastening into base materials. Fasteners should never be
fired into hard or brittle materials such as cast iron, tile,
glass, or rock. These materials can easily shatter resulting
in a potential safety hazard. In addition, soft base materials
such as wallboard, plaster, or wood are not suitable as the
fastener can penetrate the material and protrude through
the opposite side.
Center Punch Test (Fig. F–H)
A center punch test should always be performed to
determine the suitability of the base material for a
powder‑actuated fastening. This test is relatively simple
and can help to insure a safe, successful fastening. Be sure
to wear the appropriate eye protection when performing
this test. To begin, select the fastener to be used for the
job. Then, place the point of the fastener against the
proposed base material. Strike the fastener with a single
hammer blow, then examine the point. If the point of the
fastener is not blunted and the base material has a clear
5
5