Prior To Operation; How To Use; Maintenance And Inspection - Hitachi Koki X 100 Instrucciones De Manejo

PRIOR TO OPERATION

1. Power source
Ensure that the power source to be utilized conforms
to the power requirements specified on the product
nameplate.
2. Power switch
Ensure that the power switch is in the OFF position.
If the plug is connected to a receptacle while the
power switch is in the ON position, the power tool
will start operating immediately, which could cause
a serious accident.
3. Extension cord
When the work area is removed from the power
source, use an extension cord of sufficient thickness
and rated capacity. The extension cord should be
kept as short as practicable.
4. Installing a wheel
Install the wheel so that lengthris less than 15 mm.
If r is longer, abnormal vibration will occur, and
the machine is not only negatively affected, but
there is a possibility of a serious accident.
Make theras small as possible.
Dia. of the wheel should be less than 32 mm. If
a wheel with D more than 32 mm is used, the
circumference speed exceeds the safety limit and
the wheel will break. Never use such a wheel.
Distance L varies for D. Determine L referring to
the table below.
Wheels can be simply attached and detached by using
the two wrenches. (Fig. 2).
NOTE:
Do not tighten the collet chuck by inserting a shaft
thinner than the regular shaft diameter (6 mm) in
the chuck or in an empty condition. This practice
will damage the collet chuck.
When installing a wheel with shaft, tighten the
collet chuck after applying a small quantity of spindle
oil (or sewing machine oil) to the tapered portion
indicated in Fig. 1.
d 6 mm, 6.35 mm (1/4")
D 13 mm 16 mm
L 40 mm 50 mm

HOW TO USE

1. Switching operation
(1) When throwing the switch lever to the ON position,
power is applied; when throwing it to the OFF
position, power is switched off.
(2) When first throwing the switch after installing a
new wheel, avoid personal proximity to the wheel
revolving circumference to avoid danger of a
possible imperfection.
(3) Before starting, test the machine with the wheel
pointed in a safe direction.
2. Precautions on operation
(1) Lightly press the wheel to the material to be ground.
When grinding materials, high-speed revolution is
necessary. Use a hand grinder with high-speed
revolution, minimizing the pressing force.
(whenr= 15 mm)
20 mm 25 mm 32 mm
50 mm 50 mm 40 mm
(2) Dressing the wheel
After attaching a wheel, correct deflection of the
wheel center by using a dresser. If the wheel center
is eccentric, not only precise finishing cannot be
achieved but also grinder vibration increases,
lowering grinder accuracy and durability.
A clogged or worn wheel will spoil the finishing
surface or lower grinding efficiency. Occasionally
dress the wheel by applying the dresser.

MAINTENANCE AND INSPECTION

1. Inspecting the wheel
Ensure that the wheel is free of cracks and surface
defects.
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 (Fig. 3)
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 figure when it becomes
worn to or near the "wear limit". In addition, always
keep carbon brushes clean and ensue that they
slide freely within the brush holders.
5. Replacing carbon brushes
Disassemble the brush caps with a slotted-head
screwdriver. The carbon brushes can then be easily
removed.
6. Service parts list
A: Item No.
B: Code No.
C: No. Used
D: Remarks
CAUTION:
Repair, modification and inspection of Hitachi Power
Tools must be carried out by an 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.
MODIFICATIONS:
Hitachi Power Tools are constantly being improved
and modified to incorporate the latest technological
advancements.
Accordingly, some parts (i.e. code numbers and/or
design) may be changed without prior notice.
NOTE:
Due to HITACHI's continuing program of research and
development, the specifications herein are subject to
change without prior notice.
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