Important Safety Information - Chicago Electric 91223 Owner's Manual

Operating Instructions
Read the ENTIRE IMPORTANT SAFETY INFORMATION section at the beginning of this
manual including all text under subheadings therein before set up or use of this product.
Tool Set Up
TO PREVENT SERIOUS INJURY FROM ACCIDENTAL OPERATION:
Turn the Power Switch of the tool off and unplug the tool from its
electrical outlet before installing accessories.
Installing a Non-threaded Grinding Wheel
1. The Grinding Wheel MUST be:
• rated to at least 11,000 RPM.
• no larger than 4-1/2" in diameter.
• fitted with a 7/8" round arbor hole.
• from 0.16" to 0.28" thick.
• a type of grinding wheel suitable for
surface grinding, not edge grinding.
• dry and clean.
• proven undamaged by inspection and
by the ring-test explained below.
Spindle
Lock
Spindle
(5)
Inner
Flange (3)
Grinding
Wheel (2)
Figure 1 – Installing Wheels
2. Press in and hold the Spindle Lock Button
to prevent the Spindle from turning.
3. Remove the Outer Flange. Keep the Inner
Flange in position on the Spindle.
Page 14
Outer
Flange (1)
Wrench
(28)
For technical questions, please call 1-800-444-3353.
4. Closely inspect the Grinding Wheel before mounting.
Perform a ring-test on the wheel (unless wheel is
smaller than 4" or is an unusual shape) as follows:
a. Suspend wheel using a dowel or
finger through the arbor hole.
Hang
Wheel
from
Dowel
Tap
Wheel
Here
b. Tap the flat side of the wheel with a light non-
metallic object, such as a screwdriver handle,
at a point 45° from the vertical center line on
each side of the wheel and 1 – 2 inches from
the edge of the wheel (see Illustration).
c. Rotate the wheel 90° and repeat the test
until the entire wheel has been checked.
d. An undamaged wheel will give a clear
tone. If cracked, there will be a dead
sound and not a clear ring.
5. For wheels with paper gaskets (blotters) or metal
gaskets: Slip the grinding wheel onto the Spindle
with the gasket first. The gasket should be centered
on the grinding wheel and the wheel and gasket
should rest flat against the Inner Flange.
WARNING: To prevent serious injury,
gaskets must be used for all grinding
wheels they are provided with. Gaskets
help prevent grinding wheel damage and
wheel slippage, causes of wheel failure.
45° 45°
V
E
R
T
I
C
A
L
C
E
N
T
E
R
45° 45°
Item 91223