Sioux Tools Air Tools - Manual (Page 9)

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wheels that are secured to plain or threaded mandrels. Another exception is the use of a
cone wheel where the work offers protection.
USING A GRINDER WITHOUT A GUARD CAN CAUSE INJURY!
Damaged grinding wheels can explode.
Check the wheel for damage before mounting, such as chips and cracks. Handle wheels
carefully to avoid dropping or bumping. Protect wheels from extremes of temperature and
humidity. Check wheels immediately after any unusual occurrence that may damage
wheels. Check wheels daily. Refer to latest edition of ANSl B7.1.
Hold tool under bench or provide other protection when starting up a new wheel, a used
wheel that has been remounted, or at the beginning of an operation. Run at operating
speed in this protected area for at least one minute before applying to the work. No one
shall stand in front of or in line with the wheel during this test.
Exploding wheels can cause serious injury or death.
Overspeeding wheels can explode.
Check the speed rating of the accessory or the speed printed on the wheel. This speed
must be greater than the name plate speed of the grinder and the actual speed of the
grinder as measured with a tachometer. Do not exceed rated operating air pressure.
Exploding wheels can cause injury or death.
Unsecured work can move violently when grinding.
Secure work; use clamps or vise to hold work.
Violently moving work pieces can cause injury.
Grinders may coast for a short time after the trigger is released.
Be sure tool has come to a complete stop before setting it aside.
Grinders that do not come to a complete stop before setting aside can cause injury.
Flanges, nuts and related equipment in poor shape or not the proper ones for the wheel or tool
used can cause wheels to malfunction. Grinding wheels not properly tightened can spin off.
Be certain that all wheel, flanges, nuts and related equipment are in good shape, the
proper ones for the type and size of wheel being used, and are securely fastened.
Depressed center wheels of 7" and 9" diameter and cup wheels are to be mounted with
120 in-lb or 10 ft-lb (1.4 KG’M) of torque min. to prevent wheel spin off. Do not over
tighten.
Grinding wheels that malfunction or spin off can cause injury.
Abnormal sounding or excessively vibrating grinders can indicate a hazard which could cause
wheel to explode.
If the normal sound of the grinder changes, or if it vibrates excessively, shut it off
immediately, remove the wheel, and check speed with tachometer. Tool could be
overspeeding or the wheel could be damaged or not mounted properly.
Exploding wheels can cause injury or death.
Grinders with the actuator left in the “on” position can cause unexpected starts when the tool is
connected to the air supply.
Be sure actuator is off before hooking up air.
Unexpected starts can cause injury.