Important Charging Notes; Storage Recommendations; Intended Use - DeWalt DCD791 Manual De Instrucciones

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a cloth or soft non-metallic brush. Do not use water or
any cleaning solutions.

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 and 75 °F (18 ° – 24 °C). DO NOT charge
the battery pack in an air temperature 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. Move the charger and battery pack to a location
where the surrounding air temperature is
approximately 65 °F – 75 °F (18 ° – 24 °C);
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 effect on the battery pack.
5. Foreign materials of a conductive nature such as, but
not limited to, grinding dust, metal chips, 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 the charger
before attempting to clean.
6. Do not freeze or immerse the charger in water or any
other liquid.

Storage Recommendations

1. The best storage place is one that is cool and dry, away
from direct sunlight and excess heat or cold.
2. For long storage, it is recommended to store a fully
charged battery pack in a cool dry place out of the
charger for optimal results.
nOTE: Battery packs should not be stored completely
depleted of charge. The battery pack will need to be
recharged before use.
SAVE THESE INSTRUCTIONS FOR
FUTURE USE
8
COMPONENTS (FIG. A)

WARNING: Never modify the power tool or any part
of it. Damage or personal injury could result.
Refer to Figure A at the beginning of this manual for a
complete list of components.

Intended Use

These drills/drivers/hammerdrills are designed
for professional drilling, percussion drilling and
screwdriving applications.
DO nOT use under wet conditions or in presence of
flammable liquids or gases.
These drills/drivers/hammerdrills are professional power
tools. DO nOT let children come into contact with the tool.
Supervision is required when inexperienced operators use
this tool.
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 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.
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, 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.
Torque Adjustment Collar (Fig. A)
Your tool has an adjustable torque screwdriver mechanism
for driving and removing a wide array of fastener shapes
and sizes and in some models, a hammer mechanism for
drilling into masonry. Circling the collar
drill bit symbol, and in some models, a hammer symbol.
These numbers are used to set the clutch to deliver a torque
range. The higher the number on the collar, the higher the
torque and the larger the fastener which can be driven. To
select any of the numbers, rotate until the desired number
aligns with the arrow.
nOTE: The torque adjustment collar is only engaged during
screwdriving mode and not in drill and hammerdrill modes.
Dual Range Gearing (Fig. A)
The dual range feature of your drill/driver allows you to shift
gears for greater versatility.
. To turn
1
2 determines the
3 are numbers, a