Standard Accessories; Maintenance And Inspection - Hitachi DV 20VB2 Instrucciones De Manejo

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STANDARD ACCESSORIES

In addition to the main unit (1 unit), the package
contains the accessories listed in the below.
(1) Chuck wrench (Spec. only for keyed chuck) ................1
(2) Side handle ..................................................................1
(3) Depth gauge ................................................................1
Standard accessories are subject to change without notice.
APPLICATIONS
○ By combined actions of ROTATION and IMPACT:
Boring holes in hard materials (concrete, marble, granite,
tiles, etc.)
○ By ROTATIONAL action:
Boring holes in metal, wood and plastic.
SPECIFICATIONS
Voltage*
1
Power input
Speed range
Forward
rotation No load
speed
Reverse
rotation
Steel
Capacity Concrete
Wood
Full-load impact rate
Weight*
2
*1 Be sure to check the nameplate on product as it is subject
to change by areas.
*2 Weight: According to EPTA-Procedure 01/2003
NOTE
Due to HITACHI's continuing program of research and
development, the specifi cations herein are subject to
change without prior notice.
MOUNTING AND OPERATION
Action
Fixing and removing side handle
Using depth stopper
Mounting and dismounting of the
bit (For keyed chuck)
Mounting and dismounting of the
bit (For keyless chuck Type A)*
Mounting and dismounting of the
bit (For keyless chuck Type B)*
Selecting rotation direction
Selecting the operating mode
Switch operation*
3
Locking-on the switch
Releasing the switch
Change rotation speed
Selecting accessories
(110 V, 220 V, 230 V, 240 V)
790 W*
1
1 2
0 – 1000 min 0 – 3000 min
-1
0 – 600 min 0 – 1800 min
-1
13 mm 8 mm
20 mm 13 mm
40 mm 25 mm
8000 min -1 26000 min
2.5 kg
Figure Page
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Selecting the appropriate drill bit
○ When boring concrete or stone
Use the drill bits specifi ed in the Optional Accessories.
○ When boring metal or plastic
Use an ordinary metalworking drill bit.
○ When boring wood
Use ordinary woodworking drill bit.
However, when drilling 6.5 mm or smaller holes, use a
metalworking drill bit.
*1 Type A (Fig. 5)
(1) Mounting the bit
Turn the lock collar in the direction "AUF" and open the
chuck. After inserting the drill bit into the chuck as far it
will go, turn the lock collar in the "ZU" direction. Grip the
ring and close the chuck by turning the sleeve clockwise
as viewed from the front.
(2) Dismounting the bit
Turn the lock collar in the direction "AUF" to release the
chucking force. Grip the ring and open the chuck by
turning the sleeve counterclockwise.
*2 Type B (Fig. 6)
(1) Mounting the bit
Turn the sleeve counterclockwise and open the chuck.
After inserting the drill bit into the chuck as far it will go,
grip the ring and close the chuck by turning the sleeve
clockwise as viewed from the front.
-1
(2) Dismounting the bit
Grip the ring and open the chuck by turning the sleeve
counterclockwise.
-1
*3 CAUTION
If the L-side of push button is pressed for reverse bit
rotation, the stopper cannot be used.

MAINTENANCE AND INSPECTION

-1
1. Inspecting the drill bits
Since use of an abraded drill bits will cause motor
malfunctioning and degraded effi ciency, replace the drill
bits with a new one or resharpening without delay when
abrasion is noted.
2. Inspecting the mounting screws
Regularly inspect all mounting screws and ensure that
they are properly tightened. Should any of the screws be
loose, retighten them immediately. Failure to do so could
result in serious hazard.
3. Maintenance of the motor
The motor unit winding is the very "heart" of the power
tool. Exercise due care to ensure the winding does not
become damaged and/or wet with oil or water.
4. Inspecting the carbon brushes
For your continued safety and electrical shock protection,
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carbon brush inspection and replacement on this tool
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should ONLY be performed by a Hitachi Authorized
Service Center.
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5. Replacing supply cord
If the replacement of the supply cord is necessary, it has
to be done by Hitachi Authorized Service Center to avoid
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a safety hazard.
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CAUTION
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In the operation and maintenance of power tools, the
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safety regulations and standards prescribed in each
country must be observed.
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