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8. Operating the Grinder
BEFORE STARTING THE MOTOR CHECK THAT:
• End shields are secured to the main wheel guard by screws, which must be secured at all times.
• Wheel can be revolved freely by hand.
• The tool rests are in position, and adjusted to within 1.5 mm of the periphery face of the wheel and firmly secured.
• The protective spark shields fitted to the bench grinder are clean and secured in the correct position and that
recommended and approved types of protective goggles, with clean lenses, are worn before operating the machine.
• All adjustments and checks must be made with the machine disconnected from the power supply.
WHEN STARTING AND USING THE MACHINE:
• Check that the wheel, especially a new replacement wheel, is in sound condition by allowing the machine to run up to
maximum speed and remain there for at least 30 seconds. During this check make sure that all personnel are standing
clear of the machine.
• Allow the machine to run up to full speed before applying the workpiece to be ground.
• Feed the workpiece smoothly on to the grinding wheel and avoid harsh intermittent pressure and bumping
on to the wheel.
• Always apply light but firm pressure and allow the wheel to rotate at the maximum possible speed.
• Avoid excessive pressure as this will tend to decrease the wheel speed and the amount of stock removal, causing uneven
wear on the grinding wheel and overloading on the motor.
• Do not grind on the side face of the wheel.
• Do not stop the wheel by applying pressure to the side face of the wheel.
• Do not stop the wheel by applying pressure to it at the conclusion of the grinding operation. Always allow the machine
to run down freely to rest.
• The machine should not be operated for more than 30 minutes per hour.
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