10 –
English
SAFETY INSTRUCTIONS
•
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.
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 out-of-round and vibrate if an
excessive feed pressure is used.
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
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.
•
Stand at a comfortable distance from the work piece.
•
Take care when inserting the blade in an existing cut.
•
Never cut above shoulder height.
•
Be alert to movement of the work piece or anything else
that can occur, which could cause the cut to close and
pinch the blade.
Pull in
Pull in occurs when the discs lower section suddenly stops or
when the cut closes. (To avoid, see the heading ”Basic rules”
and ”Jamming/rotation”, here below.)
Pinching/rotation
If the cut is pressed together this can lead to jamming. The
machine can be pulled down suddenly with a very powerful jerk.
How to avoid pinching
Support the work piece in such a way that the cut remains
open during the cutting operation and when the cut is finished.
!
WARNING! Under all circumstances avoid
cutting 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.
!
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.
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