Global Machinery Company MX355C - Manual (Page 12)

12
Some helpful tips when using the chop saw
• Disc selection. The cutting disc must match the material
to be cut. There are a wide variety of cutting discs
and careful selection will assist in the correct and safe
operation of the saw. For example, select a masonry
cutting disc for bricks and tiles, a bar cutting disc for
cutting solid metal section and a metal stud cutting disc
for cutting steel sections. General purpose metal cutting
discs are also available but where possible it is better to
use the correct cutting disc for the task being performed.
• Abrasive cutting discs wear. The cutting discs wear so
as to constantly expose to the material being cut clean
and sharp cutting edges. This is normal for this type of
cutter.
• During the cutting operation apply a constant and
even pressure to the cutting arm. The disc should be
constantly cutting, and sufficient pressure needs to be
applied to keep the cutting action going. If insufficient
pressure is applied, the wheel has a tendency to clog,
and the cutting edges of the disc become blunt and
the cutting process reduces considerably. This is called
glazing of the wheel and is due to the incorrect cutting
disc for the material being cut, or the cutting rate being
too slow.
• Do not overload the saw. The saw should run during
the cutting operation at close to full speed. Too much
pressure being applied to the tool will slow the motor
and can cause motor failure.
• Too much pressure being applied to the tool can also
cause the cutting disc to cut on an angle. Ensure the
beginning of the cut is a gradual start and apply the
firm and constant pressure as the cut gets deeper.
• When cutting sections, always try and cut the sections
so as the actual cutting length is as short as possible
through the section. For example, angle iron has two
sections to be cut. If the material is cut where both
sections are cut at once, it is better for the cutting
action than trying to cut on thin section and then a
long length cut for the next section. The longer the
length of cut, the more chance of the cutting disc
glazing and motor overload.
NOTE. As the disc wears the cutting capacity will decrease
and the depth stop knob may need to be adjusted.
Maintenance
WARNING. Always ensure that the tool is switched off and
the plug is removed from the power point before making
and adjustments or maintenance procedures.
Power cord maintenance
If the supply cord needs replacing, the task must be carried
out by the manufacturer, the manufacturer’s agent, or an
authorised service centre in order to avoid a safety hazard.
Cleaning
1. Keep the tool’s air vents unclogged and clean at all times.
2. Remove dust and dirt regularly. Cleaning is best done
with a soft brush or a rag.
3. Re-lubricate all moving parts at regular intervals.
4. Never use caustic agents to clean plastic parts.
5. Remove the metal that may have built up around the
guard and spark deflector.
CAUTION. Do not use cleaning agents to clean the plastic
parts of the saw. A mild detergent on a damp cloth is
recommended.
General inspection
Regularly check that all the fixing screws are tight. They
may vibrate loose over time.