DeWalt DW450S2 Guide D'utilisation page 9

7. Connect air hose.
8. Check for audible leaks around valves and gaskets. Never use a
tool that leaks or has damaged parts.
WARNING: To reduce the risk of personal injury, disconnect tool
from air supply before performing maintenance, clearing a jammed
fastener, leaving work area, moving tool to another location or
handing the tool to another person.
Trigger
WARNING: Always wear proper eye [ANSI Z87.1 (CAN/CSA
Z94.3)] and hearing protection [ANSI S12.6 (S3.19)] when operating
this tool.
The common operating procedure on contact trip tools is for the
operator to contact the work surface to actuate the trip mechanism
while keeping the trigger pulled, thus driving a fastener each time the
work is contacted. This will allow rapid fastener placement on many
jobs, such as sheathing, decking and pallet assembly. All pneumatic
tools are subject to recoil when driving fasteners. The tool may
bounce, releasing the trip, and if unintentionally allowed to recontact
the work surface with the trigger still actuated (finger still holding the
trigger pulled) an unwanted second fastener will be driven.
CONTACT TRIP OPERATION
WARNING: The operator must not hold the trigger pulled on
contact trip tools except during fastening operation, as serious injury
could result if the trip accidentally contacted someone or something,
causing the tool to cycle.
WARNING: Keep hands and body away from the discharge area
of the tool. A contact trip tool may bounce from the recoil of driving
a fastener and an unwanted second fastener may be driven, possibly
causing injury.
The contact trip model tool contains a contact trip that operates
in conjunction with the trigger to drive a fastener. There are two
methods of operation to drive fasteners with a contact trip tool.
SINGLE FASTENER PLACEMENT: To operate the tool in this
manner, first position the contact trip on the work surface, WITHOUT
PULLING THE TRIGGER. Depress the contact trip until the nose
touches the work surface and then pull the trigger to drive a fastener.
Do not press the tool against the work with extra force. Instead, allow
the tool to recoil off the work surface to avoid a second unwanted
fastener. Remove your finger from the trigger after each operation.
RAPID FASTENER OPERATION: To operate the tool in this manner,
hold the tool with the contact trip pointing towards but not touching
the work surface. Pull the trigger and then tap the contact trip against
the work surface using a bouncing motion. Each depression of the
contact trip will cause a fastener to be driven.
Tool Operation Check (Fig.1)
WARNING: Remove all fasteners from tool before performing tool
operation check.
CONTACT TRIP OPERATION
A. With finger off the trigger, press the contact trip against the work
surface.
THE TOOL MUST NOT CYCLE.
B. Hold the tool off the work surface, and pull the trigger.
THE TOOL MUST NOT CYCLE.
C. With the tool off the work surface, pull the trigger. Press the
contact trip against the work surface.
THE TOOL MUST CYCLE.
D. Without touching the trigger, press the contact trip against the
work surface, then pull the trigger.
THE TOOL MUST CYCLE.
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