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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.
•
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 disc's 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.
SAFETY INSTRUCTIONS
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.
Cutting blades
WARNING! A cutting blade may burst and
!
cause injury to the operator.
Never use a cutting blade at a lower speed
rating than that of the power cutter.
Never use a cutting blade for any other
purpose than that it was intended for.
WARNING! Cutting plastics with a diamond
!
blade or rescue blade can cause kickback
when the material melts due to the heat
produced when cutting and sticks to the
blade.
General
Cutting blades are available in two basic designs; abrasive
discs and diamond blades.
Always remove the cutting blade when the machine is
transported.
Make sure that the right bushing is used for the cutting blade
to be fitted on the machine. See the instructions under the
heading Assembling the cutting blade.
High-quality blades are often most economical. Lower quality
blades often have inferior cutting capacity and a shorter
service life, which results in a higher cost in relation to the
quantity of material that is cut.
Water cooling
WARNING! Water cooling, which is used
!
when cutting concrete, cools the blade and
increases its service life while also reducing
the formation of dust. Disadvantages include
difficulties at very low temperatures, the risk
of damaging floors and other structural
elements, and the risk of slipping.
After using an abrasive disc with water cooling, run the disc
dry for about half a minute. If an abrasive disc is stored in
humid conditions, this can cause imbalance and result in
injury.
– 9
English
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