DeWalt DCF921 Traducido De Las Instrucciones Originales página 21

OPERATION
Instructions for Use

WARNING: Always observe the safety instructions and
applicable regulations.

WARNING: To reduce the risk of serious personal injury,
turn tool off and disconnect battery pack before making
any adjustments or removing/installing attachments or
accessories. An accidental start-up can cause injury.
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
Usage (Fig. A)

CAUTION: 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 variable speed trigger switch
Release variable speed trigger 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.
- accessory size: Failure to use the correct accessory size will
cause a reduction in fastening torque.
- Bolt size: Larger bolt diameters generally require higher
fastening torque. Fastening torque will also vary according to
length, grade, and torque coefficient.
- Bolt: Ensure that all threads are free of rust and other debris to
allow proper fastening torque.
- Material: The type of material and surface finish of the
material will affect fastening torque.
- Fastening time: Longer fasten ing time results in increased
fastening torque. Using a longer fastening time than
recommended could cause the fasteners to be overstressed,
stripped or damaged.
MAINTENANCE
Your power tool has been designed to operate over a long
period of time with a minimum of maintenance. Continuous
satisfactory operation depends upon proper tool care and
regular cleaning.

WARNING: To reduce the risk of serious personal injury,
turn tool off and disconnect battery pack before making
any adjustments or removing/installing attachments or
accessories. An accidental start-up can cause injury.
The charger and battery pack are not serviceable.
C
Lubrication
Your power tool requires no additional lubrication.
10 .
1 to start operation.
D
Cleaning

WARNING: Blow dirt and dust out of the main housing with
dry air as often as dirt is seen collecting in and around the air
vents. Wear approved eye protection and approved dust mask
when performing this procedure.

WARNING: Never use solvents or other harsh chemicals for
cleaning the non-metallic parts of the tool. These chemicals may
weaken the materials used in these parts. Use a cloth dampened
only with water and mild soap. Never let any liquid get inside the
tool; never immerse any part of the tool into a liquid.
Optional Accessories

WARNING: Since accessories, other than those offered by
WALT, have not been tested with this product, use of such
D
e
accessories with this tool could be hazardous. To reduce the risk
of injury, only D WALT recommended accessories should be used
e
with this product.
Consult your dealer for further information on the
appropriate accessories.
Protecting the Environment
Separate collection. Products and batteries marked
w
with this symbol must not be disposed of with normal
household waste.
Products and batteries contain materials that can
be recovered or recycled reducing the demand for raw
materials. Please recycle electrical products and batteries
according to local provisions. Further information is available at
www.2helpU.com.
Rechargeable Battery Pack
This long life battery pack must be recharged when it fails
to produce sufficient power on jobs which were easily done
before. At the end of its technical life, discard it with due care for
our environment:
• Run the battery pack down completely, then remove it from
the tool.
• Li‑Ion cells are recyclable. Take them to your dealer or a local
recycling station. The collected battery packs will be recycled or
disposed of properly.
EnGLIsh
21