Husqvarna K3000 用户手册

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SAFETY INSTRUCTIONS
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.
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.
Abrasive discs for different materials
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.
There is an arrow on the rear of the machine that indicates the 
axles direction of rotation that the disc is mounted on.
Always use a sharp diamond blade.
Material
Diamond blades are ideal for masonry, reinforced concrete 
and other composite materials. Diamond blades are not 
recommended for cutting metal.
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.
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.
Disc type
Material
Concrete disc
Concrete, asphalt, stone masonry, 
cast iron, aluminium, copper, 
brass, cables, rubber, plastic, etc.
Metal disc
Steel, steel alloys and other hard 
metals.
!
WARNING! Avoid using abrasive discs with 
water. The strength is impaired when 
abrasive discs are exposed to moisture. 
!
WARNING! Cutting plastics with a diamond 
blade can cause kickback when the material 
melts due to the heat produced when cutting 
and sticks to the blade.