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9.
Use only properly rated depressed center wheels.
Use only depressed center wheels rated at
12,000/min 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 handle 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
switch to the "on" position.
Switch ON: Press the switch lever.
Switch OFF: Release the switch lever.
Switch lever
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.
Fig. 3
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.
A
NOTE:
The wheel provided (resinoid wheel) is rated as Class
A grain and # 24 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 oval-shaped indentation of the wheel
washer with the notched part of the spindle, then
attach them.
(3) Fit the protuberance of the depressed center wheel
onto the wheel washer.
(4) Screw the wheel nut onto the spindle.
English
15° – 30°
B
Fig. 4
11
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