Stihl TSA 230 Manual De Instrucciones página 23

See the section entitled "Wet Cutting
with Abrasive Wheels" in the safety
precautions of this manual. Wet cutting
is generally not suitable for cutting
metals.
Composite resin wheels designed for
wet cutting
Adjust water flow rate
during cutting so it is suf-
ficient to bind all the dust
that occurs (at least
20 fl. oz (0.6 L/min)).
If the water flow rate is too high, the
cutting wheel may skim on the water
surface in the cut and greatly reduce
cutting performance. To avoid this, do
not exceed a water flow rate of about
135 fl. oz (4 L/min).
Use water properly:
1. Make certain water does not flow on
wheel that is not running, since a
composite wheel will absorb water
and that will affect wheel balance.
2. After finishing work, run the cutting
wheel at normal operating speed for
about 3 to 6 seconds without water
so that the remaining water is flung
off.
Respiratory protection
WARNING
If wet cutting at the recommended flow
rate is not utilized, the operator and any
bystanders should always wear a
respirator approved by NIOSH/MSHA
for the material being cut. Even if wet
cutting, an operator who is actively
TSA 230
cutting for more than two hours a day
should wear at least a NIOSH-approved
disposable respirator.
Points to be noted with diamond and
composite cutting wheels
Object to be cut
Must be fully supported
–
Must be secured so that it cannot
–
roll or slip away
Must be protected against vibration
–
The cutting sequence
The cutting sequence is important when
cutting openings and recesses, etc. The
last cut must always be made in such a
way that the cutting wheel cannot
become bound and so that the user is
not at risk of being injured by the part
that has been cut off or out.
If applicable, leave small ridges of uncut
material to hold the severed part in
position. These ridges can subsequently
be broken through.
A number of points must be decided
before the part is finally severed:
How heavy is the part?
–
In which direction can it move after
–
being severed?
Is it under tension?
–
Is it properly supported to prevent
–
pinching?
Helpers must not be put at risk of injury
when the part is broken off or out.
Cutting in several passes
Mark cutting line (A).
N
A
Work along the cutting line. If
N
corrections are necessary, always
reposition the cutting wheel, taking
care to ensure that it is not wedged.
The cutting depth per pass should
not exceed 2 cm (0.8"). Thicker
material must be cut in several
passes.
Cutting slabs
Secure the slab (e. g. on a non-slip
N
surface, sandbed).
English
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