Facts About Abrasive Wheel; Handling And Storage Of Wheels - Echo CSG-680 Operator's Manual

Facts About Abrasive Wheel

Put no Side
Pressure on
the Wheel

Handling and Storage of Wheels

CSG-680
ECHO wheels are made by laying a strong fiber mesh material into a form,
pouring a mixture of resin and the abrasive grit particles over the mesh, and
adding a second layer of mesh over the mixture. Then the resin and
reinforcing mesh are bonded together and cured.
The wheel's ability to cut certain materials are due to the type abrasive, size
of the grit and it's spacing. The reinforcement on both sides adds strength
and rigidity.
Always read the label on the wheel. If the wheel does not cut well, it may be
the wrong type for the material. Forcing it to cut may result in shattering of the
wheel and serious injury to the operator.
Do not grind with a cut-off wheel or put pressure on the sides.
Use only ECHO reinforced wheels, or wheels approved for this saw
by ECHO. Wheels that are too thick or fit the arbor improperly may
shatter, causing serious personal injury. So may wheels of low speed
rating or those that are cracked, wrapped, out-of-round or edge-
damaged.
A wheel can stand a lot of cutting pressure as long as the pressure is straight
on and not from the side of the wheel. This is why you always must make
only straight line cuts, by avoiding saw tilt or wobbling off line during a cut.
Saws intended for forcible entry should be equipped with new wheels for
each use. If the used wheels can pass the ring test (page 11) and close
inspection, they may be use in training emergency crews.
Check every wheel for warping, cracks and broken edges before mounting on
the saw.
Warped wheels do not cut properly and may be stressed to the point of
breaking. Always store your wheels sown flat on a smooth, flat and dry
surface. When stacking many wheels, place cardboard or paper spacers
between them as a cushion.
Moisture and heat both can cause wheel damage. Do not let wheels lie in the
sun or expose them to high heat. Keep wheels dry at all times, and store in
an area of low humidity and moderate temperature. Protection from moisture
damage applies during water-flush cutting. To keep water from penetrating
the wheel, bring wheel up to cutting speed before turning on water, and
maintain wheel rotation for 10 seconds after shutting off water.
12
WARNING