Hitachi G 23ST Handling Instructions Manual page 5

6. Ensure that the abrasive products is correctly mounted
and tightened before use and run the tool at no-load for
30 seconds in a safe position, stop immediately if there
is considerable vibration or if other defects are detected.
If this condition occurs, check the machine to determine
the cause.
7. Confi rm that the spindle lock is disengaged by pushing
push button two or three times before switching the
power tool on.
8. To prolong the life of the machine and ensure a fi rst
class fi nish, it is important that the machine should not
be overloaded by applying too much pressure. In most
applications, the weight of the machine alone is suffi cient
for eff ective grinding. Too much pressure will result in
reduced rotational speed, inferior surface fi nish, and
overloading which could reduce the life of the machine.
9. The wheel continues to rotate after the tool is switched off .
After switching off the machine, do not put it down until the
depressed center wheel has come to a complete stop. Apart
from avoiding serious accidents, this precaution will reduce
the amount of dust and swarf sucked into the machine.
10. Check that the work piece is properly supported.
11. Ensure that ventilation openings are kept clear when
working in dusty conditions.
If it should become necessary to clear dust, fi rst
disconnect the tool from the mains supply (use non-
metallic objects) and avoid damaging internal parts.
12. Ensure that sparks resulting from use do not create
a hazard e.g. do not hit persons, or ignite fl ammable
substances.
13. Always use eye and ear protection.
Other personal protective equipment such as dust mask,
gloves, helmet and apron should be worn when necessary.
If in doubt, wear the protective equipment.
14. When the machine is not use, the power source should
be disconnected.
15. Be sure to switch OFF and disconnect the attachment plug
from the receptacle to avoid a serious accident before the
depressed center wheel is assembling and disassembling.
16. RCD
The use of a residual current device with a rated residual
current of 30 mA or less at all times is recommended.
SYMBOLS
WARNING
The following show symbols used for the machine. Be
sure that you understand their meaning before use.
G18ST / G23ST / G18SW2 / G23SW2:
Disc Grinder
Read all safety warnings and all instructions.
Always wear eye protection.
V Rated voltage
Alternating current
P Power input
n
No-load speed
0
n
Rated speed
/min Revolution or reciprocations per minute
D Wheel outer diameter
d Wheel hole diameter
t Wheel thickness
Peripheral speed
Weight (Only main body)
kg
Switching ON
Switching OFF
Disconnect mains plug from electrical outlet
Switch locks to the "ON" position.
U
Usual carbon brush
A
Auto-stop carbon brush
Warning
Class II tool
STANDARD ACCESSORIES
In addition to the main unit (1 unit), the package
contains the accessories listed in the below.
(1) Wrench .........................................................................1
(2) Side handle ...................................................................1
Standard accessories are subject to change without notice.
APPLICATIONS
○ Removal of casting fi n and fi nishing of various types of
steel, bronze and aluminum materials and castings.
○ Grinding of welded sections or sections cut by means of
a cutting torch.
SPECIFICATIONS
The specifi cations of this machine are listed in the Table on
page 37.
* Be sure to check the nameplate on product as it is subject
to change by areas.
NOTE
Due to HiKOKI's continuing program of research and
development, the specifi cations herein are subject to
change without prior notice.
MOUNTING AND OPERATION
Action
Fitting and adjusting the wheel guard
Fixing the side handle
Assembling depressed center wheel
Assembling cutting wheel
Switch operation*
Switch operation (without Lock-on)*
Grinding angle and grinding method
Selecting accessories
* Subject to change depending on area.
5
English
Figure Page
1 38
2 38
3 38
4 38
5-a 39
5-b 39
6 39
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