English
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SAFETY INSTRUCTIONS
Cutting sequence
First make the lower horizontal cut. Now make the two vertical
cuts. Finish with the upper horizontal cut.
CAUTION! If the upper horizontal cut is made before the lower
horizontal cut, the work piece will fall on the blades jamming them.
Water cooling
Water cooling should always be used. This cools the blades
and increases their life and prevents dust build-up.
There is a restrictor in the water hose that reduces the water flow.
At a low water pressure, for example when the water tank is
used, the restrictor can be dismantled to give the correct
water flow.
CAUTION! It is important not to use a too high water flow
without throttling as the belt can then slip.
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 dull diamond blades
will cause overheating, which can result in a diamond
segment becoming loose.
Sharpen the blades by cutting a soft material such as
sandstone or brick.
Blade vibrations
The blades can become out of true and vibrate if a too high
feed pressure is used.
A lower feed pressure can stop the vibration. Otherwise
replace the blades. See the instructions under the heading
Assembling the blades.
The blades shall be intended 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 blades 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 the power cutter with the upper quadrant of the
blades as illustrated, i.e. in 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 full throttle.
•
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 on the alert in case the work piece moves or anything
else occurs, which could cause the cut to close and the
blades to jam.
Pull in
Pull in occurs when the blades’ lower sections suddenly stop
or when the cut closes. (To avoid, see the instructions under
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.
Check the engine speed
Use a revolution counter regularly to check the engine speed
at the working temperature, at full throttle and without a load.
!
WARNING! Kickback can happen very
suddenly and violently; kicking the power
cutter and blades back at the user. If this
happens when the blades are 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.
