DeWalt XR DCF887 Manual Del Usuario página 39

To select reverse, release the trigger switch (A) and
depress the forward/reverse control button (B) on
the left side of the tool. The centre position of the
control button locks the trigger switch in the off
position. When changing the position of the control
button, be sure the trigger is released.
NOTE: The first time the tool is run after changing the
direction of rotation, you may hear a click on start up.
This is normal and does not indicate a problem.
Worklights (Fig. 1)
There are three worklights (G) located around the
6.35 mm (1/4") hex chuck (D). The worklights are
activated when the trigger switch is depressed.
When the trigger is released, the worklight will stay
illuminated for up to 20 seconds.
NOTE: The worklights are for lighting the immediate
work surface and are not intended to be used as a
flashlight.
Mode Selector (Fig. 1, 4)
Your tool is equipped with a mode selector (K)
which allows you to select one of three modes.
Select the mode based on the application and
control the speed of the tool using the variable
speed trigger switch (A).
Precision Drive (Fig. 4)
In addition to normal impacting modes, this tool
features the Precision Drive mode which enables
greater control in lighter applications to avoid
damage to materials or fasteners. It is ideal for
light applications such as cabinet hinge screws or
machine screws. Precision Drive mode will work as
a screwdriver in light applications, before hesitating
as the screw head reaches the work piece, and
then (if required) start a slow controlled impact to
ensure the head ends perfectly flush.
NOTE: This mode is for light duty screwdriving
applications. If the tool will not drive a fastener in
Precision Mode, please select mode 2 which will
give the additional power required.
DCF887
Mode 1 Precision Drive
Mode 2 Normal Impacting
Mode 3 High Speed Impacting rpm
Quick-Release Chuck (Fig. 2, 5, 6)
WARNING: Use only impact
accessories. Non-impact accessories
may break and cause a hazardous
condition. Inspect accessory prior to use
to ensure that it con tains no cracks.
NOTE: The chuck accepts 1/4" (6.35 mm) hex
accessories only.
Place the forward/reverse button (B) in the lock-off
(centre) position or remove battery pack before
changing accessories.
To install an accessory, fully insert the accessory.
The accessory is locked into place (Fig. 5).
To remove an accessory, pull the chuck collar
(C) away from the front of the tool. Remove the
accessory (Fig. 6).
Usage
Your impact tool generates the following maximum
torque:
Cat #
DCF887
1. Place the accessory into the chuck. Keep the
tool pointed straight at the work piece.
2. Press switch to start operation. Release the
switch to stop operation. Always check torque
with a torque wrench, as the fastening torque
is affected by many factors including the
following:
• Voltage: Low voltage, due to a nearly
• Socket size: Failure to use the correct
• Bolt Size: Larger bolt diameters generally
• Bolt: Ensure that all threads are free of rust
• Material: The type of material and surface
rpm 0–1000
rpm 0–2800
0–3250
• Fastening Time: Longer fasten ing time
Nm
205
CAUTION: Ensure fastener and/or
system will withstand the level of torque
generated by the tool. Excessive torque
may cause breakage and possible
personal injury.
discharged battery, will reduce fastening
torque.
socket size will cause a reduction in fastening
torque.
require higher fastening torque. Fastening
torque will also vary according to length,
grade, and torque coefficient.
and other debris to allow proper fastening
torque.
finish of the material will affect fastening
torque.
results in increased fastening torque. Using
a longer fastening time than recommended
could cause the fasteners to be
overstressed, stripped or damaged.
english
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