Hitachi DH 28PC Mode D'emploi page 4

English
STANDARD ACCESSORIES
In addition to the main unit (1 unit), the package
contains the accessories listed in the below.
○ Plastic case ................................................................ 1
○ Side handle ................................................................. 1
○ Depth gauge .............................................................. 1
Standard accessories are subject to change without notice.
APPLICATIONS
Rotation and hammering function
○ Drilling anchor holes
○ Drilling holes in concrete
○ Drilling holes in tile
Rotation only function
○ Drilling in steel or wood
(with optional accessories)
○ Tightening machine screws, wood screws
(with optional accessories)
Hammering only function
○ Light-duty chiselling of concrete, groove digging and
edging.
SPECIFICATIONS
The specifi cations of this machine are listed in the Table on
page 99.
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
Inserting SDS-plus drilling tools
Removing SDS-plus drilling tools
Selecting rotation direction
Selecting the operating mode
Adjusting the drilling depth
Changing the chisel position
Switching on and off and setting
the speed
Replacing carbon brushes
Selecting accessories*
* For detailed information regarding each tool, contact a
Hitachi authorized service center.
LUBRICATION
Low viscosity grease is applied to this rotary hammer so that
it can be used for a long period without replacing the grease.
Replace the grease whenever you change the carbon brush
to maintain the service life.
Further use of the rotary hammer with lock off grease will
cause the machine to seize up reduce the service life.
CAUTION
A special grease is used with this machine, therefore,
the normal performance of the machine may be badly
aff ected by use of other grease. Please be sure to let
one of our service agents undertake replacement of the
grease.
MAINTENANCE AND INSPECTION
1. Inspecting the drill bits
2. Inspecting the mounting screws
3. Maintenance of the motor
4. Inspecting the carbon brushes (Fig. 8)
5. Replacing carbon brushes (Fig. 8)
6. Replacing supply cord
CAUTION
Figure Page
1 100
2 100
3 100
GUARANTEE
4 100
We guarantee Hitachi Power Tools in accordance with
5 100 statutory/country specifi c regulation. This guarantee does
not cover defects or damage due to misuse, abuse, or
6 100
normal wear and tear. In case of complaint, please send
the Power Tool, undismantled, with the GUARANTEE
7 101
CERTIFICATE found at the end of this Handling instruction,
to a Hitachi Authorized Service Center.
8 101
– 102, 103
4
Since use of a dull tool will cause motor malfunctioning
and degraded effi ciency, replace the drill bit with new
ones or resharpen them without delay when abrasion is
noted.
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.
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.
The Motor employs carbon brushes which are
consumable parts. When they become worn to or near
the "wear limit" ⓐ, it results in motor trouble.
When an auto-stop carbon brush is equipped, the motor
will stop automatically. At that time, replace both carbon
brushes with new ones which have the same carbon
brush Numbers ⓑ shown in the Fig. 8. In addition,
always keep carbon brushes clean and ensure that they
slide freely within the brush holders.
Loosen the set screws ⓒ and remove the tail cover ⓓ.
Remove the brush caps ⓔ and carbon brushes. After
replacing the carbon brushes, do not forget to tighten the
brush caps securely and to install the tail cover.
If the replacement of the supply cord is necessary, this
has to be done by the manufacturer of this agent in order
to avoid a safety hazard.
In the operation and maintenance of power tools, the
safety regulations and standards prescribed in each
country must be observed.