Tempest VentMaster 3120K, Operation Manual

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12 –
English
SAFETY INSTRUCTIONS
Abrasive discs
The cutting material on abrasive discs consists of grit bonded
using an organic binder. ”Reinforced blades” are made up of
a fabric or fibre base that prevents total breakage at maximum
working speed if the blade should be cracked or damaged.
A cutting blade’s performance is determined by the type and
size of abrasive corn, and the type and hardness of the
bonding agent.
Check that the blade is approved for the same or higher
speed according to the aproval plate of the engine. Never use
a cutting blade with a lower speed rating than that of the
power cutter.
Ensure the blade it not cracked or damaged in any other way.
Test the abrasive disc by hanging it on your finger and tapping
it lightly with a screwdriver or the like. If the disc does not
produce a resonant, ringing sound it is damaged.
Diamond blades
Diamond blades consist of a steel body provided with
segments that contain industrial diamonds.
Diamond blades ensure lower costs per cutting operation,
fewer blade changes and a constant cutting depth.
When using diamond blades make sure that it rotates in the
direction indicated by the arrow on the blade.
Always use a sharp diamond blade. Sharpen the blade by
cutting in a soft material such as sandstone or brick.
Diamond blades are available in several hardness classes. A
"soft" diamond blade has a relatively short service life and
large cutting capacity. It is used for hard materials such as
granite and hard concrete. A "hard" diamond blade has a
longer service life and reduced cutting capacity, and should
be used for soft materials such as brick and asphalt.
Material
Diamond blades are ideal for masonry, reinforced concrete
and other composite materials. Diamond blades are not
recommended for cutting metal.
Diamond blades for wet cutting
Diamond blades for wet cutting should have water poured
over them during the cutting to cool the blade and bond the
dust.
Diamond blades for dry cutting
Diamond blades for dry cutting are a new generation of
blades that do not require water cooling. However, the blades
will still be damaged by excessive heat. It is most economical
to allow the blade to cool by simply lifting it out from the cut
every 30–60 seconds and letting it rotate in the air for 10
seconds.
Abrasive discs, types and use
Use
Disc type Material Water cooling
Concrete
Concrete, asphalt,
stone masonry, cast
iron, aluminium,
copper, brass,
cables, rubber,
plastic, etc.
Can be used to
reduce dust. Run the
disc dry for about a
half minute after
using an abrasive
disc with water
cooling.
Metal
Steel, steel alloys
and other hard
metals.
NOT recommended
!
WARNING! Cool diamond blades for wet
cutting continuously with water to prevent
overheating, which can cause the blade to
break up and eject pieces that can cause
injury.