Test Report No.: 17702074 003
Part I of II
guard;
e) when it is adjusted to its lowest position, the height of
the saw blade shall be visible from the point at which
the operator adjusts the saw blade height;
f) in feed and out feed ends of its base shall be designed
to allow upward vertical movement of the saw blade
guard in order to avoid misfeeding should the saw
blade guard be incorrectly set or the workpiece be
uneven. This can be achieved for example by:
1) providing of “lead-ins”. The front lead-in shall be in
accordance with the following requirements (see
Figure 21):
i) minimum height H shall be such, that the saw
blade guard can be raised by a workpiece with a
thickness of 20 % of the maximum cutting depth
for which the machine is designed;
ii) angle α shall be not more than 45°; or
2) equipping the saw blade guard with rollers (see Figure
22). The minimum radius H of the rollers shall be such,
that the saw blade guard can be raised by a workpiece
with a thickness of 20 % of the maximum cutting depth
for which the machine is designed.
When an automatic adjusting saw blade guard is provided
it shall prevent completely access to the saw blade when
the operator is not feeding a workpiece and be capable of
automatic upward movement during cutting operation
without jamming of the workpiece e.g. by a 3 rollers
climber at the front edge of the saw blade guard mounted
separately from the riving knife.
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