DeWalt DCD791 Manual De Instrucciones página 48

NOTE: Use the lowest torque setting required to seat the fastener
at the desired depth. The lower the number, the lower the torque
output.
3. Insert the desired fastener accessory into the chuck as you would
any drill bit.
4. Make some practice runs in scrap or on unseen areas of
the workpiece to determine the proper position of the torque
adjustment collar.
5. Always start with lower torque settings, then advance to higher
torque settings to avoid damage to the workpiece or fastener.
FIG. 9 FIG. 10
C
DRILLING
SCREWDRIVING
Hammerdrilling (Fig. 11)
1. Select the desired speed/torque range using the gear shifter to
match the speed and torque to the planned operation. Turn the
collar (C) to the hammerdrill symbol.
IMPORTANT: Use carbide-tipped or masonry bits rated for
percussion drilling only.
2. Drill with just enough force on the hammer to keep it from
bouncing excessively or "rising" off the bit. Too much force will
cause slower drilling speeds, overheating, and a lower drilling
rate.
3. Drill straight, keeping the bit at a right angle to the work. Do not
exert side pressure on the bit when drillling as this will cause
clogging of the bit flutes and a slower drilling speed.
4. When drilling deep holes, if the hammer speed starts to drop off,
pull the bit partially out of the hole with tool still running to help
clear debris from the hole.
NOTE: A smooth, even flow of dust from the hole indicates proper
drilling rate.
MAINTENANCE
WARNING: To reduce the risk of serious personal injury,
turn tool off and remove the battery pack before making any
adjustments or removing/installing attachments or accessories.
An accidental start-up can cause injury.
FIG. 11
Your D
long period of time with a minimum of maintenance. Continuous
C
satisfactory operation depends upon proper tool care and regular
cleaning.
Lubrication
Your power tool requires no additional lubrication.
Cleaning
HAMMERDRILLING
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.
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 s oft non-metallic brush. Do
not use water or any cleaning solutions.
46
WALT power tool has been designed to operate over a
e