Cooper Bussmann 15G Series service manual Inspect the Grinding Wheel

Type 1 Wheel breakage can also occur if:

• Outer flange is left off

• Outer flange is reversed

• A washer is used in place of proper flange

• Outer flange and driving flange are of unequal diameters

• No wheel blotters are used

! CAUTION

Overtightening can cause wheel breakage.

Select Type 1 wheels with proper hole size and speed rating. Never adapt wheels with an oversize hole to fit the spindle.

ABRASIVE WHEEL MOUNTING & BEGINNING GRIND- ING OPERATION

The spindle end nut should be tightened firmly against the outer flange of Type 1 wheels to assure the necessary friction against the blotter faces to drive the wheel.

Do not grind with

side of Type 1 wheel.

Guard not shown for clarity.

TYPE 1

WHEEL

Relieved flanges minimum 1/3 dia. of wheel dia.

Blotter

Extreme caution should be exercised not to use excessive side pressure. Excessive side pressure can break the wheel and result in severe injury.

GRINDING

FACE

On Type 1 wheel grinders, the driv- ing flanges must be the relieved-type,

free of nicks and burrs or other flaws that might create stress concentra- tions on the grind-

ing wheel. Spindles should be checked for damage or abuse. Blotters must be used and

be at least as large in diameter as the flanges. Diameters of both driving flange and outer flange must be identical and both must measure at least one-third the diameter of the grinding wheel mounted between them. Both flanges must be properly relieved as per ANSI Safety Code B7.1 and ANSI B186.1. (See page 6)

! WARNING

Abrasive wheels known to have been subjected to any of the above conditions can burst violently. Never use an abrasive wheel known to have been subjected to any of the above conditions.

CHECK FLANGE

Warning and Instruction Label 202595 & 202596

• Improper mounting

• Imbalance

• Improper shipment or storage

• Exposure to water, solvents, high humidity, freezing and extreme temperatures

• Mismatched speed ratings

• Age

Safety Recommendations

The guard must be securely attached to the grinder with all bolts, nuts and lockwashers in place and torqued to 30 to 40 in. lbs.

		0
		1
6		2
		3
5	4

CAUTION Cleco MODEL SERIAL NO.

Do not remove this tag until the operator of this tool has read these safety precautions. Read Operating Instructions carefully. Follow the Safety Recommendations for your safety and the safety of others. ! WARNING ! CAUTION Hearing protection is recommended in high noise areas (above 85 dBA). Close proximity of other tools, reflective surfaces, process noises, and resonant structures can substantially contribute to the sound level experienced by the user. ! WARNING OVER

869974

WARNING TAG

The speed rating and warnings are roll stamped on housing and should be replaced for legibility in the event or damage. Warning tags and warning labels should be maintained. Warning tags and warning labels are available from the manufacturer.

Before mounting a wheel, after all tool repairs, and when- ever a grinder is issued for use, check the free speed of the grinder with a tachometer to make certain that the actual free speed at 90 psig (6.2 bar) does not exceed the rated free speed stamped on the tool. Grinders in use on the job must be similarly checked at least once every twenty hours of operation, or once every week, whichever is more frequent. Checking free speed after the removal of each worn wheel and before mounting a new wheel is highly recommended.

INSPECT THE GRINDING WHEEL!

Check the maximum safe RPM marked on the wheel.

Never use a wheel rated below the actual tool speed. Inspect the wheel for cracks or chips, water stains, or signs of abuse or improper storage. Cracked, chipped or faulty grinding wheels are dangerous and must not be used. They must be destroyed rather than risk their use by someone who may not notice that they are damaged.

! WARNING

Fragments from an abrasive wheel can cause serious injury or death. Do not operate without proper wheel guard in place.

Causes of abrasive wheel failures have been traced to such factors as:

•Dropping, bumping, or abuse (careless handling of the grinder or wheel)

3