Electronic Protection System; Important Charging Notes; Wall Mounting; Assembly And Adjustments - DeWalt DCN920 Instruction Manual

Cordless framing nailer
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2. Insert and fully seat battery pack. The left indicator light
will continuously blink red to indicate that the charging
process has started. For two‑stage chargers, this is
indicative of stage 1 charging during which the battery
pack is charged to a majority of its capacity.
3. Charging is complete for a single‑stage charger when the
left indicator light remains continuously red and the right
indicator light stays unlit. For a two‑stage charger, the
left indicator light remains continuously red and the right
indicator light continuously blinks red to indicate stage
2 charging during which the battery pack is topped off to
its full capacity. Stage 2 charging is complete when both
indicator lights remain continuously red. When charging
is complete, the battery pack may be removed and used,
or left in the charger.
The charger will not charge a faulty battery pack. The charger
refusing to light could indicate a problem with the charger
or a faulty battery pack. Discontinue use and take both to an
authorized service center.

WARNING: Only charge batteries in air temperature
over 40 ° F (4.5 ° C)  and below 104 ° F (40 ° C).
hot/Cold Pack Delay
When the charger detects a battery pack that is too hot
or too cold, it automatically starts a Hot/Cold Pack Delay,
suspending charging until the battery pack has reached an
appropriate temperature. The charger then automatically
switches to the pack charging mode. This feature ensures
maximum battery pack life.
A cold battery pack may charge at a slower rate than a warm
battery pack.
The hot/cold pack delay will be indicated by the red light(s)
continuing to blink but with the yellow light continuously
ON. Once the battery pack has reached an appropriate
temperature, the yellow light will turn OFF and the charger
will resume the charging procedure.
Fan Cooled Chargers
Some chargers are equipped with an internal fan designed
to cool the battery pack. The fan will turn on automatically
when the battery pack needs to be cooled.
Never operate the charger if the fan does not operate
properly or if ventilation slots are blocked. Do not permit
foreign objects to enter the interior of the charger.

Electronic Protection System

Li‑ion tools are designed with an Electronic Protection
System that will protect the battery pack against overloading,
overheating or deep discharge. The tool will automatically
turn off and the battery pack will need to be recharged.

Important Charging Notes

1. Longest life and best performance can be obtained if
the battery pack is charged when the air temperature is
between 65 ° F – 75 ° F (18 ° C– 24 ° C). DO NOT charge
when the battery pack is below 40 ° F (4.5 ° C), or above
104 ° F (40 ° C). This is important and will prevent serious
damage to the battery pack.
2. The charger and battery pack may become warm to the
touch while charging. This is a normal condition, and
does not indicate a problem. To facilitate the cooling of
the battery pack after use, avoid placing the charger or
battery pack in a warm environment such as in a metal
shed or an uninsulated trailer.
3. If the battery pack does not charge properly:
a. Check operation of receptacle by plugging in a lamp
or other appliance;
b. Check to see if receptacle is connected to a light
switch which turns power off when you turn out
the lights;
c. If charging problems persist, take the tool, battery
pack and charger to your local service center.
4. You may charge a partially used pack whenever you
desire with no adverse effect on the battery pack.
Charger Cleaning Instructions

WARNING: Shock hazard. Disconnect the charger
from the AC outlet before cleaning. Dirt and grease
may be removed from the exterior of the charger using
a cloth or soft non‑metallic brush. Do not use water or
any cleaning solutions.

Wall Mounting

Some D
WALT chargers are designed to be wall mountable
e
or to sit upright on a table or work surface. If wall mounting,
locate the charger within reach of an electrical outlet, and
away from a corner or other obstructions which may impede
air flow. Use the back of the charger as a template for the
location of the mounting screws on the wall. Mount the
charger securely using drywall screws (purchased separately)
at least 1" (25.4 mm) long, with a screw head diameter of
0.28–0.35" (7–9 mm), screwed into wood to an optimal
depth leaving approximately 7/32" (5.5 mm) of the screw
exposed. Align the slots on the back of the charger with the
exposed screws and fully engage them in the slots.
SAVE THESE INSTRUCTIONS FOR
FUTURE USE

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.
Rotating Rafter Hook (Fig. A, E)

WARNING: Remove fasteners from magazine
before making any adjustments or servicing this
tool. Failure to do so may result in serious injury.

WARNING: When not in use, place tool on its
side on a stable surface where it will not cause a
tripping or falling hazard.

CAUTION: Some tools with large battery packs
will stand upright on the battery pack but may be
easily knocked over.

WARNING: To reduce the risk of serious personal
injury, do not use the tool's rafter hook to hang
the tool from your body. DO NOT use the rafter hook
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