DeWalt DCF889 Instructions Manual page 38

EN GLI SH
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 main
handle (d).
Variable Speed Trigger Switch (fi g. 1)
To turn the tool on, squeeze the trigger switch
(a). To turn the tool off, release the trigger switch.
Your tool is equipped with a brake. The anvil will
stop when the trigger switch is fully released. The
variable speed switch enables you to select the best
speed for a particular application. The more you
squeeze the trigger, the faster the tool will operate.
For maximum tool life, use variable speed only for
starting holes or fasteners.
NOTE: Continuous use in variable speed range is
not recommended. It may damage the switch and
should be avoided.
Forward/Reverse Control Button
(fi g. 1)
A forward/reverse control button (b) determines the
direction of the tool and also serves as a lock-off
button.
To select forward rotation, release the trigger switch
and depress the forward/reverse control button on
the right side of the tool.
To select reverse, release the trigger switch and
depress the forward/reverse control button on the
left side of the tool.
The center position of the control button locks the
tool 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.
Worklight (fi g. 1)
There is a worklight (g) located on the foot of the
tool. The worklight is activated when the trigger
switch is depressed. When the trigger is released,
the worklight will stay illuminated for up to 20
seconds.
NOTE: The worklight is for lighting the immediate
work surface and is not intended to be used as a
flashlight.
36
Anvil (fi g. 2)
WARNING: Use only impact
accessories. Non-impact accessories
may break and cause a hazardous
condition. Inspect accessory prior to
use to ensure that it contains no cracks.
CAUTION: Inspect anvils, detent pins,
and hog rings prior to use. Missing or
damaged items should be replaced
before use.
Place the switch in the locked off (center) position or
remove battery pack before changing accessories.
ANVIL WITH DETENT PIN (FIG. 2)
To install an accessory on the anvil, align the hole in
the side of the accessory with the detent pin (h) on
the anvil (c). Press the accessory on until the detent
pin engages in the hole. Depression of detent pin
may be necessary to aid installation of accessory.
To remove an accessory, depress the detent pin
through the hole and pull the accessory off.
ANVIL WITH HOG RING (FIG. 3)
DCF889H
To install an accessory on the hog ring anvil, firmly
push accessory onto the anvil (c). The hog ring (i)
compresses to allow the accessory to slide on. After
accessory is installed, the hog ring applies pressure
to help provide accessory retention.
To remove an accessory, grasp the accessory and
firmly pull it off.
Usage
Your impact tool can generate the following
maximum torque:
Cat # Nm
DCF889 540
DCF889H 540
WARNING: Ensure fastener and/
or system will withstand the level
of torque generated by the tool.
Excessive torque may cause
breakage and possible personal
injury.
1. Place the accessory on the fastener head. Keep
the tool pointed straight at the fastener.
2. Press switch to start operation. Release 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
discharged battery, will reduce fastening
torque.
Ft.-Lbs. In.-Lbs.
400 4800
400 4800