Toothed Blades, Carbide Tipped Blades And Emergency Situations; Transport And Storage - Husqvarna K760 Rescue Operator's Manual

Sharpening diamond blades
• Always use a sharp diamond blade.
• 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.
Diamond blades and cooling
• During cutting the friction in the cut causes the
diamond blade to be heated up. If the blade is allowed
to get too hot this can result in loss of blade tensioning
or core cracking.
Diamond blades for dry cutting
• Although no water is required for cooling, dry cutting
blades must be cooled with air flow around the blades.
For this reason dry cutting blades are recommended
only for intermittent cutting. Every few seconds of
cutting the blade should be allowed to run 'free" with
no load to allow the air flow around the blade to
dissipate the heat.
Diamond blades for wet cutting
• Wet cutting diamond blades must be used with water
to keep the blade core and segments cool during
sawing.
• Wet cutting blades should NOT be used dry.
• Using wet cutting blades without water can cause
excessive heat build-up, resulting in poor
performance, severe blade damage and is a safety
hazard.
• Water cooling cools the blade and increases its
service life while also reducing the formation of dust.
10 – English
CUTTING BLADES
Toothed blades, carbide tipped
blades and emergency situations
Government regulation requires a different type of
guarding for carbide tipped blades not available on power
cutters – a so called 360 degree guard. Power Cutters
(this saw) use Abrasive or Diamond blades and have a
different guarding system which does not provide
protection against the dangers presented by wood cutting
blades.
Use of this power cutter with a carbide tipped blade is a
violation of OSHA regulations.
Due to the hazardous nature and exigent circumstances
involved with fire fighting and rescue operations
conducted by the various highly trained public safety
forces, safety professionals (fire departments),
Husqvarna is aware that they may use this power cutter
with carbide tipped blades in certain emergency
situations due to the ability of carbide tipped blades to cut
many different types of obstructions and materials in
combination without having to take time to switch blades
or machines. When using this power cutter be aware at all
times that carbide tipped blades are more kickback prone
than abrasive or diamond blades if not used properly.
Carbide tipped blades can also throw pieces of material
away from the blade.
For these reasons, a power cutter equipped with a carbide
tipped blade should never be used except by highly
trained public safety professionals who are aware of the
risks associated with its use and then only in those
exigent circumstances when other tools are deemed
inefficient and ineffective to for fire or rescue operations.
A power cutter equipped with carbide tipped blade should
never be used to cut wood in non-rescue operations. For
these applications a chainsaw or a circular saw is the
proper tool.

Transport and storage

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Do not store or transport the power cutter with the
cutting blade fitted. All blades should be removed from
the cutter after use and stored carefully.
Store cutting blades in dry, frost free conditions.
Special care should be taken with abrasive blades.
Abrasive blades must be stored on a flat, level
surface. If an abrasive blades is stored in humid
conditions, this can cause imbalance and result in
injury.
Inspect new blades for transport or storage damage.