Maintenance And Inspection - Hitachi Koki P 20SF Instrucciones De Manejo

MAINTENANCE AND INSPECTION

1. Inspecting the blades
Continued use of dull or damaged blades will result in
reduced cutting effi ciency and may cause overloading
of the motor. Sharpen or replace the blades as often as
necessary.
2. Handling
CAUTION
The front base, rear base, and cutting depth control
knob are precisely machined to obtain specifi cally high
precision. If these parts are roughly handled or subjected
to heavy mechanical impact, it may cause deteriorated
precision and reduced cutting performance. These
parts must be handled with particular care.
3. 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.
4. Inspecting the carbon brushes (Fig. 30)
The motor employs carbon brushes which are
consumable parts. Since an excessively worn carbon
brush can result in motor trouble, replace the carbon
brushes with new ones having the same carbon brush
No. shown in the fi gure when it becomes worn to or
near the "wear limit". In addition, always keep carbon
brushes clean and ensure that they slide freely within
the brush holders.
5. Replacing carbon brushes
After removing the chip cover, use a slotted screwdriver
to disassemble the brush caps. The carbon brushes
can then be easily removed with the spring.
6. 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.
7. Replacing supply cord
If the replacement of the supply cord is necessary, it
has to be done by Hitachi Authorized Service Center to
avoid a safety hazard.
8. Service parts list
CAUTION
Repair, modifi cation and inspection of Hitachi Power
Tools must be carried out by a Hitachi Authorized
Service Center.
This Parts List will be helpful if presented with the tool to
the Hitachi Authorized Service Center when requesting
repair or other maintenance.
In the operation and maintenance of power tools, the
safety regulations and standards prescribed in each
country must be observed.
MODIFICATION
Hitachi Power Tools are constantly being improved
and modifi ed to incorporate the latest technological
advancements.
Accordingly, some parts may be changed without prior
notice.
NOTE
Due to HITACHI's continuing program of research and
development, the specifi cations herein are subject to
change without prior notice.
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