DeWalt DC989 Instruction Manual download pdf (Page 2)

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. 2)

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 (C) are numbers, a drill bit symbol, and in some models, and a ham-

mer 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.

Three Speed Gearing (Fig. 2)

The three speed feature of your tool allows you to shift gears for greater versatility. To select

speed 1 (highest torque setting), turn the tool off and permit it to stop. Slide the gear shifter (D) all

the way to the left. Speed 2 (middle torque and speed setting) is in the middle position. Speed 3

(highest speed setting) is to the right.

NOTE: Do not change gears when the tool is running. Always allow the drill to come to a complete

stop before changing gears. If you have trouble changing gears, make sure that the gear shifter

is engaged in one of the three speed settings.

Keyless Single Sleeve Chuck (Fig. 3)

Your tool features a keyless chuck with one rotating sleeve for one-handed operation of the

chuck. To insert a drill bit or other accessory, follow these steps.

1. Lock the trigger in the OFF position as previously described.

2. Grasp the black sleeve of the chuck with one hand and use the other hand to secure the

tool as shown in Figure 3. Rotate the sleeve counterclockwise far enough to accept the

desired accessory.

3. Insert the accessory about 3/4" (19mm) into the chuck and tighten securely by rotating the

chuck sleeve clockwise with one hand while holding the tool with the other. Your tool is

equipped with an automatic spindle lock mechanism. This allows you to open and close the

chuck with one hand.

To release the accessory, repeat step 2 above.

WARNING: Do not attempt to tighten drill bits (or any other accessory) by gripping the front

part of the chuck and turning the tool on. Damage to the chuck and personal injury may result.

Always lock off trigger switch when changing accessories.

Be sure to tighten chuck with one hand on the chuck sleeve and one hand holding the tool for

maximum tightness.

Side Handle

CAUTION: Always hold drill with both hands and use side handle if so

equipped. Side handle clamps to the front of the gear case as shown and

can be rotated 360˚ to permit right- or left-hand use. Be sure side handle is

installed tightly. If model is not equipped with side handle, grip drill with one

hand on the handle and one hand on the battery pack.

NOTE: Side handle comes equipped on models DC987, DC988, DC989.

Operation as a Drill

Turn the collar to the drill bit symbol. Install and tighten the desired drill bit in the chuck. Select

the desired speed/torque range using the gear shifter to match the speed and torque to the

planned operation. Follow these instructions for best results when drilling.

DRILLING

1. To install the battery pack into the tool handle, align the base of the tool with the notch inside

the tool’s handle and slide the battery pack firmly into the handle until you hear the lock snap

into place.

NOTE: To remove the battery pack from the tool, press the release buttons and firmly pull

the battery pack out of the tool handle.

2. Turn the collar to the drill bit symbol for drilling or to the hammer symbol for hammerdrilling.

3. Select the desired speed/torque range using the gear shifter to match the speed and torque

to the planned operation.

4. For WOOD, use twist bits, spade bits, power auger bits or hole saws. For METAL, use high-

speed steel twist drill bits or hole saws. Use a cutting lubricant when drilling metals. The

exceptions are cast iron and brass which should be drilled dry. For MASONRY, use carbide-

tipped bits or masonry bits. A smooth, even flow of dust indicates the proper drilling rate.

5. Always apply pressure in a straight line with the bit. Use enough pressure to keep the drill

bit biting, but do not push hard enough to stall the motor or deflect the bit.

6. Hold tool firmly to control the twisting action of the drill.

7. IF DRILL STALLS, it is usually because it is being overloaded. RELEASE TRIGGER

IMMEDIATELY, remove drill bit from work, and determine cause of stalling. DO NOT

CLICK TRIGGER OFF AND ON IN AN ATTEMPT TO START A STALLED DRILL – THIS

CAN DAMAGE THE DRILL.

8. Keep the motor running when pulling the bit back out of a drilled hole. This will help prevent

jamming.

Additional Hammerdrill Operation

1. When drilling, use 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.

2. Drill straight, keeping the bit at a right angle to the work. Do not exert side pressure on the

bit when drilling as this will cause clogging of the bit flutes and a slower drilling speed.

3. When drilling deep holes, if the hammer speed starts to drop off, pull the bit partially out of

the hole with the tool still running to help clear debris from the hole.

Operation as a Screwdriver

Select the desired speed/torque range using the 3 speed gear shift lever on the top of tool to

match the speed and torque to the planned operation. Insert the desired fastener accessory into

the chuck as you would any drill bit. Set the torque adjustment collar (Fig. 2). Make a few

practice runs in scrap or unseen areas to determine the proper position of the clutch collar.

MAINTENANCE

Cleaning

CAUTION: With the motor running, blow dirt and dust out of all air vents with dry air at least

once a week. Wear safety glasses when performing this. Exterior plastic parts may be cleaned

with a damp cloth and mild detergent. Although these parts are highly solvent resistant, NEVER

use solvents.

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 soft non-metallic

brush. Do not use water or any cleaning solutions.

Repairs

To assure product SAFETY and RELIABILITY, repairs, maintenance and adjustment (including

brush inspection and replacement) should be performed by certified service centers or other

qualified service organizations, always using identical replacement parts.

Accessories

Recommended accessories for use with your tool are available at extra cost from your local

service center.

CAUTION: The use of any non-recommended accessory may be hazardous.

If you need any assistance in locating any accessory, please contact DEWALT Industrial Tool

Co., 701 East Joppa Road, Baltimore, MD 21286, call 1-800-4-D

EWALT (1-800-433-9258) or

visit our website www.dewalt.com.

• Pull by plug rather than cord when disconnecting charger. This will reduce risk of dam-

age to electric plug and cord.

• Make sure that cord is located so that it will not be stepped on, tripped over, or other-

wise subjected to damage or stress.

• Do not use an extension cord unless it is absolutely necessary. Use of improper exten-

sion cord could result in risk of fire, electric shock, or electrocution.

• An extension cord must have adequate wire size (AWG or American Wire Gauge) for

safety. The smaller the gauge number of the wire, the greater the capacity of the cable, that

is 16 gauge has more capacity than 18 gauge. When using more than one extension to make

up the total length, be sure each individual extension contains at least the minimum wire size.

Recommended Minimum Wire Size for Extension Cords

Total Length of Cord

25 ft. 50 ft. 75 ft. 100 ft. 125 ft. 150 ft. 175 ft.

7.6 m 15.2 m 22.9 m 30.5 m 38.1 m 45.7 m 53.3 m

Wire Size AWG

18 18 16 16 14 14 12

• Do not place any object on top of charger or place the charger on a soft surface that

might block the ventilation slots and result in excessive internal heat. Place the charg-

er in a position away from any heat source. The charger is ventilated through slots in the top

and the bottom of the housing.

• Do not operate charger with damaged cord or plug — have them replaced immediately.

• Do not operate charger if it has received a sharp blow, been dropped, or otherwise

damaged in any way. Take it to an authorized service center.

• Do not disassemble charger; take it to an authorized service center when service or

repair is required. Incorrect reassembly may result in a risk of electric shock, electrocution

or fire.

• Disconnect the charger from the outlet before attempting any cleaning. This will

reduce the risk of electric shock. Removing the battery pack will not reduce this risk.

• NEVER attempt to connect 2 chargers together.

• The charger is designed to operate on standard household electrical power (120

Volts). Do not attempt to use it on any other voltage. This does not apply to the vehic-

ular charger.

SAVE THESE INSTRUCTIONS

FOR FUTURE USE

Chargers

Your tool uses a 12.0, 14.4,18.0 Volt DEWALT Charger. Your battery can be charged in DEWALT

1 Hour Chargers, 15 Minute Chargers or Vehicular 12 volt charger. Be sure to read all safety

instructions before using your charger. Consult the chart on the back cover of this manual for

compatibility of chargers and battery packs.

Charging Procedure

DANGER: Electrocution hazard. 120 volts present at charging terminals. Do not probe with

conductive objects. Danger of electric shock or electrocution.

1. Plug the charger into an appropriate outlet before inserting battery pack.

2. Insert the battery pack into the charger. The red (charging) light will blink continuously indi-

cating that the charging process has started.

3. The completion of charge will be indicated by the red light remaining ON continuously. The

pack is fully charged and may be used at this time or left in the charger.

Using Automatic Tune-Up™ Mode

The automatic Tune-Up™ Mode equalizes or balances the individual cells in the battery pack

allowing it to function at peak capacity. Battery packs should be tuned up weekly or after 10

charge/discharge cycles or whenever the pack no longer delivers the same amount of work.

To use the Automatic Tune-Up™, place the battery pack in the charger and leave it for at least

8 hours.

Indicator Light Operation

Charge Indicators

Some chargers are designed to detect certain problems that can arise with battery packs.

Problems are indicated by the red light flashing at a fast rate. If this occurs, re-insert battery

pack into the charger. If the problem persists, try a different battery pack to determine if the

charger is OK. If the new pack charges correctly, then the original pack is defective and should

be returned to a service center or other collection site for recycling. If the new battery pack

elicits the same trouble indication as the original, have the charger tested at an authorized ser-

vice center.

HOT/COLD PACK DELAY

Some chargers have a Hot/Cold Pack Delay feature: when the charger detects a battery that is

hot, it automatically starts a Hot Pack Delay, suspending charging until the battery has cooled.

After the battery has cooled, the charger automatically switches to the Pack Charging mode.

This feature ensures maximum battery life. The red light flashes long, then short while in the Hot

Pack Delay mode.

PROBLEM POWER LINE

Some chargers have a Problem Power Line indicator. When the charger is used with some

portable power sources such as generators or sources that convert DC to AC, the charger may

temporarily suspend operation, flashing the red light with two fast blinks followed by a

pause. This indicates the power source is out of limits.

LEAVING THE BATTERY PACK IN THE CHARGER

The charger and battery pack can be left connected with the red light glowing indefinitely. The

charger will keep the battery pack fresh and fully charged.

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 condi-

tion. 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 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 +105°F (+40.5°C). 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 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 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. Do not allow any liquid to get inside charger. Electric shock may

result.

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.

OPERATION

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.

Forward/Reverse Control Button (Fig. 1)

A forward/reverse control button (B) determines the direction the tool will spin 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.

FIG. 1

FIG. 2

FIG. 3

1 2 3 4 5 6 7

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DeWalt DC989 Instruction Manual Page 2

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