5
English
7. Con
fi
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 su
ffi
cient
for e
ff
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 o
ff
.
After switching o
ff
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.
Only for EU countries
Do not dispose of electric tools together with
household waste material!
In observance of European Directive 2002/96/
EC on waste electrical and electronic equipment
and its implementation in accordance with
national law, electric tools that have reached
the end of their life must be collected separately
and returned to an environmentally compatible
recycling facility.
V
Rated voltage
Alternating current
P
Power input
n
0
No-load speed
n
Rated speed
min
-1
Revolution or reciprocations per minute
D
Wheel outer diameter
d
Wheel hole diameter
t
Wheel thickness
Peripheral speed
kg
Weight (Only main body)
I
Switching ON
Switching OFF
I
Lock
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), 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 speci
fi
cations of this machine are listed in the Table on
page 146.
NOTE
Due to HITACHI’s continuing program of research and
development, the speci
fi
cations herein are subject to
change without prior notice.
MOUNTING AND OPERATION
Action
Figure
Page
Fitting and adjusting the wheel guard
1
147
Fixing the side handle
2
147
Assembling depressed center wheel
3
147
Assembling cutting wheel
4
147
Switch operation
5
148
Grinding angle and grinding method
6
148
Selecting accessories
―
149
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