English
9.Use only properly rated depressed center wheels. Use only depressed center wheels rated at
13,700/min for G10SS and 13,000/min for G12SS or more.
Using a depressed center wheel rated less can lead to wheel disintegration during operation and cause serious bodily injury.
10.Check the push button.
Make sure that the push button is disengaged by pushing push button two or three times before turning on the grinder. (Fig. 5)
GRINDER OPERATION
1.Hold the grinder firmly by its housing and side handle (Fig. 1).
The grinder produces a counterforce which must be controlled by firmly holding onto the grinder.
2.Turn the grinder “on”. (Fig. 3)
While holding the grinder firmly, use one finger to slide the switch to the “on” position.
Switch
ON OFF
Fig. 3
3.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.
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.
4.Use proper grinding angle.
Grind only with the wheel’s edge by lifting the grinder 15° to 30°, as shown in Fig. 4.
CAUTION:
Do not use the entire surface of the depressed center wheel. Use only the edge of the depressed center wheel.
5.Move the grinder in the proper direction.
When using a new depressed center wheel in direction A (Fig. 4), the wheel edge may cut into the workpiece. In this case, grind in direction B (Fig. 4). Once the wheel edge is worn, the workpiece can be ground in both directions.
15° – 30°
AB
Fig. 4
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.
6.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 no 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.
(4)Screw the wheel nut onto the spindle.
(5)While pushing the push button with one hand, lock the spindle by turning the depressed center wheel slowly with the other hand.
Tighten the wheel nut by using the supplied wrench as shown in Fig. 5.
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