English
NOTE:
Use caution not to turn the dial scale to any value below 1 or above 6.
Dial
Fig. 4
CAUTION:
When using the grinder in the immediate vicinity of welding equipment, the rotational speed may become unstable. Do not use the grinder near welding equipment.
4.Use light grinding pressure.
There is no need to press hard when grinding. Usually the grinder’s own weight is sufficient to allow the required light contact with the surface to be ground.
Do not apply the grinding wheel strongly to the grinding surface. The grinder makes use of electronic circuit, so during application of load rotates at high speed, so ample grinding effect can be obtained by applying light pressure. If a strong grinding pressure or other abnormal load is applied, the overload protection circuit will operate and make the grinder stop rotating, so please stop applying load immediately. Following this, switching the power OFF and then ON again, will cause the rotation to increase to the regular speed.
CAUTION:
When using the tool at any value except the full speed (Dial scale 6), the motor cannot be sufficiently cooled due to the decreased number of revolution. This could result in the risk of burning and damaging the motor before an overload protective mechanism starts to function. Make sure that you use the tool by lightly applying it to the surface of material when you use it at any value except the full speed (Dial scale 6).
WARNING:
Do not press the grinder forcibly against the surface to be ground. Heavy pressure can result in wheel breakage and serious injury. It can also damage the surface being ground or damage the grinder’s motor.
5.Use proper grinding angle.
Grind only with the wheel’s edge by lifting the grinder 15° to 30°, as shown in Fig. 5.
CAUTION:
Do not use the entire surface of the depressed center wheel. Use only the edge of the depressed center wheel.
6.Move the grinder in the proper direction.
When using a new depressed center wheel in direction A (Fig. 5), the wheel edge may cut into the workpiece. In this case, grind in direction B (Fig. 5). Once the wheel edge is worn, the workpiece can be ground in both directions.
15° – 30°
A
B Fig. 5
NOTE:
The wheel provided (resinoid wheel) is rated as Class A grain and # 36 grain size. It is most suitable for heavy grinding of steel and other types of materials.
7.Adjust operation to desired finish.
For a fine finish, decrease pressure by lifting slightly. Grind slowly and at the appropriate speed.
CAUTION:
The revolving depressed center wheel will create air turbulence.
Do not lay the grinder down in areas of dust or dirt until it has come to a complete stop.
DEPRESSED CENTER WHEEL ASSEMBLY AND DISASSEMBLY
WARNING:
Never attempt to assemble or disassemble the depressed center wheel, unless the power switch is in the “OFF” position and the electrical cord has been disconnected from the receptacle.
1.Assembly
(1)Turn the disc grinder upsidedown so that the spindle is facing upward.
(2)Align the
(3)Fit the protuberance of the depressed center wheel onto the wheel washer.
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