SAFETY INSTRUCTIONS
•Support the work piece in such a way that it is possible to predict what will happen, and so that the cut remains open while cutting.
•Check that the blade is not in contact with anything when the machine is started
•Always cut at maximum speed.
•Start cutting smoothly, allowing the machine to work without forcing or pressing in the blade.
•Move the blade slowly forwards and backwards to achieve a small contact area between the blade and the material to be cut. This reduces the temperature of the blade and ensures effective cutting.
•Feed down the machine in line with the blade. Pressure from the side can damage the blade and is very dangerous.
•The guard for the cutting equipment should be adjusted so that the rear section is flush with the work piece. Spatter and sparks from the material being cut are then collected up by the guard and led away from the user.
WARNING! Under all circumstances avoid
!grinding using the side of the blade; it will almost certainly be damaged, break and can cause immense damage. Only use the cutting section.
Do not pull the power cutter to one side, this can cause the blade to jam or break resulting in injury to people.
Sharpening diamond blades
Diamond blades can become dull when the wrong feeding pressure is used or when cutting certain materials such as heavily reinforced concrete. Working with a blunt diamond blade causes overheating, which can result in the diamond segments coming loose.
Sharpen the blade by cutting in a soft material such as sandstone or brick.
Blade vibration
The blade can become
A lower feed pressure can stop the vibration. Otherwise replace the blade. The blade must be of the recommended type for the material to be cut.
How to avoid kickback
WARNING! Kickback can happen very
!suddenly and violently; kicking the power cutter and cutting blade back at the user. If this happens when the cutting blade is moving it can cause very serious, even fatal injuries. It is vital you understand what causes kickback and that you can avoid it by taking care and using the right working technique.
What is kickback?
The word kickback is used to describe the sudden reaction that causes the power cutter and cutting blade to be thrown from an object when the upper quadrant of the blade, known as the kickback zone, touches an object.
General rules
•Never start to cut with the upper quadrant of the blade as shown in the figure, also known as the kickback zone.
•Always hold the machine in a firm grip with both hands. Hold it so that the thumbs and fingers grip round the handles.
•Keep a good balance and a firm foothold.
•Always cut at maximum speed.
8 – English
