Burr King Model 979 - Manual (Page 8)

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5. Assure the abrasive belt is aligned on the rear wheel and the contact wheel. The belt should glide across the
platen.
Start the machine. The belt should run forward the floor across the face of the contact wheel. If the belt runs n the
opposite direction you must reverse the direction of the electric motor. FIRST DISCONNECT THE MACHINE
FROM ITS AC POWER SOURCE. A COMPETENT ELECTRICIAN SHOULD PERFORM ALL
ELECTRICAL WORK ON THE MODEL 979. For three-phase motors reverse any two incoming power hot
lines, for single-phase motors consult the motor label.
6. If the abrasive belt does not remain centered on the contact wheel while the belt is moving use the tracking
adjustment right side of the machine to track the belt.. Generally, it should require less than one turn to track the belt
back to center.
7. The contact wheel height is adjustable at least 4 inches up or down from nominal. This adjustment is made
dependent of the model of machine that you purchase. Assure the machine is turned off and the belt has stopped
movement. Loosen the securing bolt on the right side of the pedestal under the machine head. If the machine has a
wheel under the head rotate the wheel as required to adjust the contact wheel height. If there is no wheel lift or
depress the grinding head to the desired position and secure the locking bolt.
Grinding modes
1. Contact wheel: Grind on the contact wheel for heavy stock removal. Always pass the work piece downward
across the outer diameter of the contact wheel.
2. Supported work: Use the work support to support your work piece against the contact wheel.
3. Platen: Raise the platen door and rest it to the rear of the machine. Rest your work piece against the platen
and to the front of the platen such that the frame of the grinder braces the work piece. The work support is apparent
immediately to the front of the platen. Remember that platen grinding consumes a great deal of horsepower since the
work part is “pinching” the belt to the platen. Also note that platen grinding creates much more heat than do other
grinding modes where the belt is not pinched to a stationary surface. This extra generation of heat can shorten
abrasive belt life and raise work piece temperature to levels that may be detrimental to the part.
Maintenance for the model 979
FIRST DISCONNECT THE MACHINE FROM ITS AC POWER SOURCE.
* Every thirty days apply light machine oil to contact wheel pivot point and the tracking control lever screw. Two
drops of oil is sufficient.
* Daily vacuum or otherwise remove dust and debris build-up from the machine and the machine belt track.
There are no other maintenance actions required. All bearings are sealed for life and require no additional
lubrication.
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Remember for operator safety and the continued effectiveness of your model 979:
Do not defeat the safety guards and other safety provisions of the model 979.
Do not operate the model 979 with the safety guard open or the contact wheel guard/platen assembly (or
internal grinding attachment) removed.
Do not reach inside the safety guards while the machine is running. To do so is hazardous.
Do not use fluids in your grinding process unless your model 979 is designed for liquid operation (NEMA 4,
4X). To do so may create an electrical safety hazard.
Do not use your model 979 to grind/polish explosive materials unless it is equipped with explosion proof
electrical devices and motor.
Do not mix alloys in your grinding. To do so may create an explosion/fire hazard.
Do not use stone or vitreous wheels on the model 979. To do so will create an operator safety hazard.
Do use eye, hand, face, arm, leg, feet and body protection that is adequate to protect against flying debris,
forcibly ejected work pieces, broken abrasive belts, etc.
Do train operators and others in safe operating practices.
Post these or equivalent instructions such they are available for ready operator reference.
Burr King Manufacturing can help you with problem solutions, and/or answers to your questions. Please call your Burr King
distributor first. If you can not reach satisfactory conclusion please call the Burr King factory, telephone 1-660-438-8998.