4. INSTALLATION
The voltage supply to which the machine is to be connected must be within the range shown on the machine nameplate.
If a fused plug is used the fuse rating should be approximately twice the full load rating of the machine.
The connection must only be done by an authorized electrician. Remember to check that the machine is running against
the tool rest before start operating the machine.
Secure the machine firmly to a work bench or pedestal. The pedestal used must be fixed to a firm level surface.
Abrasive wheels must be checked to make sure that the manufacturer's maximum permissible safe operating speed
shown on label exceeds the maximum machine speed as shown on the nameplate.
4.1
Operating the grinder
Before starting the motor check that:
End shields are secured to the main wheel guard by screws, which must bc secured at all times.
Wheel can be revolved freely by hand.
The toolrests are in position, adjusted to within 3 mm (1/8") of the periphery face of the wheel, and firmly secured.
The protective eyeshields fitted to Bench Grinders are clean and secured in the correct position, or that recommended
and approved type of pretective goggles, with clean lenses, are worn before operating the machine.
All adjustments and checks are 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 before it is put into use. 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 onto the grinding wheel and avoid harsh intermittent pressure und »bumbing« onto 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, cause uneven
wear on the grinding wheel, and overload the motor.
Avoid grinding on the side face of the wheel.
Do not arrest 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 can be operating max. 30 min/hour.
4.2
Wheel care
Store spare grinding wheels flat on a firm surface with a layer of compressible material between the wheels and the
storage surface. Similar material should be placed between wheels when a number are being stored.
As the grinding wheel is used it will wear. it is recommended that the wheel is replaced whon the diameter has been
reduced approximatcly 25% below the original size (e.g. 300 mm to 225 mm : 200 mm to 150 mm : 150 mm to 112 mm :
and 12.5 mm to 94 mm).
Wear on the wheel can cause eccentricity leading to machine vibration and »bouncing« of the workpiece.
Unless this condition is corrected it can result in further damage to the wheel and possible harm to the rotor bearings. To
obtain wheel balance and good efficient grinding action the wheel must be redressed. A suitable wheel dressing tool is
avaiable under the part number 1168.
4.3
General
Always disconnect the machine from the power supply before making any adjustment to the wheels or any other
attachment. Check the supply cable and replace any damaged length. Replacement cables must be of the same current
rating as that originally fitted.
The earth wire must always be connected an d maintained. Keep the area around the machine as clean as possible.
Replace damaged tool rests and eyeshields. Failure to do this can cause accidents.
Bearings should be regreased when a major overhaul of the machine is carried out.
4.4
2 years guarantee
If within 2 years of purchase this machine supplied by KEF A/S becomes defective due to faulty materials or
workmanships, we guarantee to repair or replace the machine or the defective part or parts free of charge provided that:
·
The product is returned complete to one of our Service Branches or Official Service agents.
·
The product has not been misused or carelessly handled and has in particular not been used in a manner
contrary to the operating instructions.
·
Repairs have not been made or attempted by persons other than our own Service Staff of the Staff of our
Official Service Agents.
·
Documentary proof of purchase date is produced when the goods arc handled in or sent for repair.
