Assembly And Adjustments; Specifications; Operation - DeWalt DCF900 Instruction Manual

English
RPM .................... revolutions per
minute
sfpm ................... surface feet per
minute
SPM .................... strokes per minute
A ......................... amperes
W ........................ watts
Wh ...................... watt hours
Ah ....................... amp hours
or AC ........... alternating current
or AC/DC .... alternating or
direct current
...................... Class II
Construction
(double insulated)
n o ....................... no load speed
n ......................... rated speed

ASSEMBLY AND ADJUSTMENTS


WARNING: To reduce the risk of serious personal
injury, turn unit off and remove the battery pack
before making any adjustments or removing/installing
attachments or accessories. An accidental start‑up can
cause injury.
Anvil (Fig. C)

WARNING: Use only impact accessories. Non‑impact
accessories may break and cause a hazardous condition.
Inspect accessories prior to use to ensure that it con tains
no cracks.

CAUTION: Inspect anvils 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.
To install an accessory on the hog ring anvil, firmly push
accessory onto the anvil 3
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.
Mode Selector (Fig. A, B)
Your tool is equipped with a mode selector
you to select one of three speeds or Precision Wrench™
mode. Select the mode based on the maximum speed/
torque needed and control the speed of the tool using the
variable speed trigger switch
Precision Wrench™ (Fig. B)
In addition to normal impacting modes, this tool features
the Precision Wrench™ mode which grants the user greater
control in both fastening and loosening applications. When
set in forward, the tool will fasten at 820 RPM until impact
begins. The tool will then pause for 0.75 seconds before
continuing to impact at a rate of 2200 IPM, providing
the user with greater control and reducing the chance of
overtightening or damaging material.
When set in reverse, the tool will impact at a normal speed
and rate of 2200 IPM. Upon sensing that the fastener has
broken free, the tool will cease to impact and will reduce
speed to help prevent "run-off" of loose hardware.
6
PSI....................... pounds per square
inch
...................... earthing terminal
..................... safety alert symbol
..................... visible radiation
do not stare into
the light
..................... wear respiratory
protection
..................... wear eye
protection
..................... wear hearing
protection
..................... read all
documentation
..................... do not expose to
rain
. The hog ring 10 compresses
which allows
9
.
1

specifications

Mode
Precision Wrench™ Mode
Low Mode
Medium Mode
High Mode

OPERATION


WARNING: To reduce the risk of serious personal
injury, turn unit off and remove the battery pack
before making any adjustments or removing/installing
attachments or accessories. An accidental start‑up can
cause injury.
Installing and Removing the Battery Pack (Fig. D)

WARNING: Ensure the tool/appliance is in the off position
before inserting the battery pack.
nOTE: For best results, make sure your battery pack is
fully charged.
1. To install the battery pack
the battery pack with the rails inside the tool's handle and
slide it into the handle until the battery pack is firmly seated
in the tool and ensure that it does not disengage.
2. To remove the battery pack from the tool, press the
release button 5 and firmly pull the battery pack out of the
tool handle. Insert it into the charger.
Proper Hand Position (Fig. E)

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 main
handle 4 .
Variable Speed Trigger Switch (Fig. A)
To turn the tool on, squeeze the trigger switch
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 (Fig. A)
A forward/reverse control button
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.
Application
Precision Wrench™ 0–820 forward
0–2300 reverse
Normal Impacting 0–650 forward
0–2300 reverse
Medium Impacting 0–1040 forward
0–2300 reverse
High Speed Impacting 0–2300 forward
0–2300 reverse
6 into the tool handle, align
1 . To turn
2 determines the
RPM