DeWALT dc212ka 18v cordless air hammer ユーザーガイド

CAUTION: Under certain conditions, with the charger plugged in to the power supply, the 

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

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. The charger will cycle through the following modes.
 1.  The red light will blink continuously indicating that the 1-hour charge cycle has started.
 2.  When the 1-hour charge cycle is complete, the light will stay on continuously and will no 

longer blink. This indicates that the pack is fully charged and can be used at this time. 

 3.  If the pack is left in the charger after the initial 1-hour charge, the charger will begin the 

Automatic Tune-Up™ mode. This mode continues up to 8 hours or until the individual 
cells in the battery pack are equalized. The battery pack is ready for use and can be 
removed at any time during the Automatic Tune-Up™ mode.

 4.  Once the Automatic Tune-Up™ mode is complete, the charger will begin a maintenance 

charge; the red indicator will remain lit.

Your tool uses a D

E

WALT 18-Volt or 24-Volt charger. Be sure to read all safety instructions 

before using your charger. Consult the chart at the end of this manual for compatibility of 
chargers and battery packs.

The 24V charger is equipped with an internal fan that provides rapid cooling of D

E

WALT 24-Volt 

battery packs. The fan operation is automatic and will turn on when required during battery 
charging. This procedure is of great benefit for a pack that has finished a useable cycle. Place 
the battery pack into the charger immediately after use so that the fan can cool the cells and 
prolong the life of the battery pack.

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 

indicating 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.

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 
service 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 pack. Such batteries 
are still usable but should not be expected to perform as much work. The charger will indicate 
to replace battery pack.

 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, 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 charger before attempting to clean.

 6.  Do not freeze or immerse charger in water or any other liquid.

 1.  The best storage place is one that is cool and dry away from direct sunlight and excess 

heat or cold.

 2.  Long storage will not harm the battery pack or charger. Under proper conditions, they can 

be stored for 5 years or more.

Your D

E

WALT tool is powered by a D

E

WALT-built motor. Be sure your power supply agrees 

with the nameplate markings.

Voltage decrease of more than 10% will cause loss of power and overheating. All D

E

WALT 

tools are factory tested; if this tool does not operate, check your battery pack.

  A. Side handle  

D.  Mode selector

  B. Trigger switch 

E.  Main handle

  C. Forward/reverse control button (Lock-off button)

The side handle clamps to the front barrel (collar) and may be rotated 360˚ to permit right- 
or left-hand use. The side handle can be tightened by rotating the black plastic portion of the 
side handle clockwise. The side handle must be tightened sufficiently to resist the twisting 
action of the tool if the accessory binds or stalls. Be sure to grip the side handle at the far end 
to control the tool during a stall. To loosen side handle, rotate counterclockwise.

To turn the tool on, squeeze the trigger switch (B). 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. 

VARIABLE SPEED SWITCH
The variable speed switch enables you to select the best speed for a particular application. 
The farther you squeeze the trigger, the faster the tool will operate. For maximum tool life, use 
variable speed only for starting holes or fasteners. 
NOTE: Continuous use in variable speed range is not recommended. It may damage the 
switch and should be avoided. 

For straight drilling, rotate the mode selector (D) until the arrow points to the drill bit symbol 
(F). For rotary hammer, align the arrow with the hammer symbol (G). For chipping mode 
(DC223 only) align arrow with the chipping symbol (H).
NOTE: The mode selector (D) must be in drill, hammer or chipping (DC223 only) mode at all 
times. There are no operable positions in between.

A forward/reverse control button (C) determines the direction and also serves as a lock-off 
button. 
To select forward rotation, release the trigger switch (B) 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.

NOTE: Make sure your battery pack is fully charged. 

actuation before removing or installing battery.
To install the battery pack into the tool handle, align the notch (or rails) inside the tool’s 
handle with the battery pack and slide the battery pack firmly into the handle until you hear 
the lock snap into place. 
To remove the battery pack from the tool, press the release buttons (I) and firmly pull 
(or slide) the battery pack out of the tool handle. Insert it into the charger as described in 
the charger section of this manual.
NOTE: Operating temperature of this tool is 19˚ to 104˚F (-7˚ to +40˚C). Using the tool outside 
of this temperature range will decrease the life of the tool. 

For best vibration control, hold the tool with one hand on the main handle (E) and the other 
hand on the side handle (A). Apply just enough pressure so the hammer is approximately 
mid-stroke. The hammer only needs enough pressure to engage the internal active vibration 
control. Applying too much pressure will not make the tool drill faster and active vibration control 
will not engage.

CAUTION: Do not use chipping bits in this tool. Using chipping bits may cause the tool to 
bind-up and damage to the tool may occur.
To insert bit, insert shank of bit about 3/4" (19 mm) into chuck (J). Push and rotate bit until it 
locks in place. The bit will be securely held.
To release bit, pull the sleeve (K) back and remove the bit.

A

FIG. 2

FIG. 4

FIG. 3

FIG. 1

B

D

C

C

E

F

G

A

K

J

A

B

D

C

E

I

I

I

LOCKED

VERROUILLÉ

TRABADO

UNLOCKED, 

REVERSE

DÉVERROUILLÉ, 

MARCHE 

ARRIÈRE

DESTRABADO, 

REVERSA

UNLOCKED, 

FORWARD

DÉVERROUILLÉ, 
MARCHE AVANT

DESTRABADO, 

AVANCE

F

G

H

F

G

FIG. 5

I

I