7
NOTE: A battery pack will slowly lose its charge when kept out of the charger. If the
battery pack has not been kept on maintenance charge, it may need to be recharged
before use. A battery pack may also slowly lose its charge if left in a charger that is
not plugged into an appropriate AC source.
WEAK BATTERY PACKS: Chargers can also detect a weak battery. Such batteries
are still usable but should not be expected to perform as much work. In such cases,
about 10 seconds after battery insertion, the charger will beep rapidly 8 times to
indicate a weak battery condition. The charger will then go on to charge the battery
to the highest capacity possible.
Important Charging Notes
1. Longest life and best performance can be obtained if the battery pack is charged
when the air temperature is between 18°- 24°C (65°F and 75°F). DO NOT charge
the battery pack in an air temperature below +4.5°C (+40°F), or above +40.5°C
(+105°F). This is important and will prevent serious damage to the battery pack.
2. The charger and battery pack may become warm to 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 current at 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. Move charger and battery pack to a location where the surrounding air
temperature is approximately 18° - 24°C (65°F - 75°F).
d. If charging problems persist, take the tool, battery pack and charger to your
local service center.
4. The battery pack should be recharged when it fails to produce sufficient power
on jobs which were easily done previously. DO NOT CONTINUE to use under
these conditions. Follow the charging procedure. You may also charge a partially
used pack whenever you desire with no adverse affect on the battery pack.
5. Under certain conditions, with the charger plugged into the power supply, the
exposed charging contacts inside the charger can be shorted by foreign material.
Foreign materials of a conductive nature such as, but not limited to, steel wool,
aluminum foil, or any buildup of metallic particles should be kept away from
charger cavities. Always unplug the charger from the power supply when there
is no battery pack in the cavity. Unplug charger before attempting to clean.
6. Do not freeze or immerse charger in water or any other liquid.
WARNING: Shock hazard. Don’t allow any liquid to get inside charger. Electric
shock may result. 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.
CAUTION: Never attempt to open the battery pack for any reason. If the plastic
housing of the battery pack breaks or cracks, return to a service center for recycling.
Motor
Voltage decrease of more than 10% will cause loss of power and overheating. All
DEWALT tools are factory tested; if this tool does not operate, check your battery
pack.
KEY FEATURES AND FUNCTIONS
Variable Speed Switch (Fig. 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 chuck will stop as soon as the
trigger switch is fully released.
NOTE: Continuous use in variable speed range is not recommended. It may damage
the switch and should be avoided.
B
B
FIG. 1
A
A
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