(1)
(4)
(5)
(6)
(7)
(2)
(3)
36
English
• If blades become blunt, the sharp cutting edge will become
worn and will be upset to form a wider rib.
(1)
• By Sharpening a little metal from the cutting edge, you can
again obtain a sharp cutting edge from this wide rib.
(2)
• Sharpening is performed by moving the grinding disc along
the angled cutting edge.
• Note: By regularly grinding, you will only have to grind away
a small adjustment of the metal each time to again obtain a
sharp cutting edge. This will ensure for very short grinding
times and you will always have the best possible cutting edge.
(ELIET recommend the following: Every 10 working hours.)
• Avoid grinding at the same location for a longer period of
time. This will prevent local discolouration of the blades, which
would indicate heating and, therefore, the material structure
at these places will change and the hardness will decrease.
• It is extremely important that the existing cutting angle be
respected when grinding.
(3: Incorrectly ground blade)
• If the cutting angle is not maintained, blades will be stopped
in the wood due to a blunt angle
(4)
of an interrupted cutting
angle
(5)
and a lot of power will be lost. Too sharp a cutting angle
(6, 7)
will give rise to a
weakened cutting edge and, therefore, blade life will be considerably shortened (see figures 4,
5, 6 and 7).
• Never grind the rear side of a blade. The profiling is on the rear with
regard to RESIST/6™ blades. If you grind away the teeth, the blade
will lose a great deal of its cutting force.
• The top of the blade is subjected to the heaviest loads during chipping.
You should, therefore, grind them as little as possible to avoid weaken-
ing.
• After all, a little of the material is removed every time they are
ground and, therefore, the active cutting edge becomes smaller. You
can continue grinding up to halfway the width of the blade tip. If you exceed this limit, you will
be compromising blade life of the unused cutting edge. We recommend reversing the blades at
this point (“read § 11.3.4 Reversing and changing chipper blades” on page 37).
• If the tip of the blade is rounded-off, chipping efficiency will be reduced. In this event, further
grinding of the blade serves no purpose. This is the time to reverse or replace the blades.
(“read § 11.3.4 Reversing and changing chipper blades” on page 37).
• After grinding, refit the blade shaft into the machine. (“read § 16.3 Removing and reinstalling
the blade shaft” on page 51.)
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