Chicago Electric 91223 Owner's Manual download pdf (Page 14)

Page 14 For technical questions, please call 1-888-866-5797. Item 91223

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

(5)

Inner

Flange (3)

Grinding

Wheel (2)

Outer

Flange (1)

Wrench

(28)

Figure 1 – Installing Wheels

Spindle

Lock

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.

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.

Tap

Wheel

Here

45° 45°

Hang

Wheel

from

Dowel

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.

SAFETY OPERATION MAINTENANCESETUP

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Chicago Electric 91223 Owner's Manual Page 14

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