Manual DeWalt DCD791 (page 37 of 152) (All languages)

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remove drill bit from work, and determine cause of stalling.

DO NOT CLICK TRIGGER ON AND OFF IN AN ATTEMPT

TO START A STALLED DRILL — THIS CAN DAMAGE

THEDRILL.

7. To minimise stalling or breaking through the material,

reduce pressure on drill and ease the bit through the last

fractional part of thehole.

8. Keep the motor running when pulling the bit back out of a

drilled hole. This will help preventjamming.

9. With variable speed drills there is no need to centre punch

the point to be drilled. Use a slow speed to start the hole

and accelerate by squeezing the trigger harder when the

hole is deep enough to drill without the bit skippingout.

Hammerdrill Operation (DCD796 only)

(Fig. A, E)

1. Turn the collar

3

to the hammerdrillsymbol.

2. Select the high speed

2

setting by sliding the gear

shifter

4

back (away from the chuck).

IMPORTANT: Use carbide-tipped or masonry bitsonly.

3. 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 lower

drillingrate.

4. 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.

5. When drilling deep holes, if the hammer speed starts to

drop off, pull the bit partially out of the hole with tool stil

running to help clear debris from thehole.

NOTE: A smooth, even flow of dust from the hole indicates

proper drillingrate.

Screwdriver Operation (Fig. A, F)

1. Turn the torque adjustment collar

3

to the desiredposition.

2. Select the desired speed/torque range using the

gear shifter

4

to match the speed and torque of the

plannedoperation.

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 to

determine the proper position of the clutchcollar.

5. Always start with lower torque settings, then advance to

higher torque settings to avoid damage to the workpiece

orfastener.

MAINTENANCE

Your

DeWALT

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.

Lubrication

Your power tool requires no additionallubrication.

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

DeWALT

, have not been tested with this product, use

of such accessories with this tool could be hazardous.

To reduce the risk of injury, only

DeWALT

recommended

accessories should be used with thisproduct.

Consult your dealer for further information on the

appropriateaccessories.

Protecting the Environment

Separate collection. Products and batteries marked

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.

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DeWalt DCD791 Manual

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