General Information - Telwin SPL 60/3 Manual De Instrucciones

ACCIDENT PREVENTION LAWS and RULES.
- Make sure that power supply cable is properly connected
to "EARTH PLATE".
- Avoid any "DIRECT CONT ACT" with NON-insulated parts
of the "CUTTING
CIRCUIT". (1)
- Always wear protection clothing. Ex.:insulating gloves and shoes.
- Keep protection wear clean and do not damage them.
- DO NOT use cables and torch, if the insulation is worn out
or if electric connections are loosened.
- DO NOT use the unit in damp rooms or in the rain.
- Switch off the machine during routine maintenance of the
torch, ex.: replacement of electrode and nozzle.
- Disconnect the machine from the outlet during installation
and operations of inspections and maintenance.
NOTE (1)
The electric circuit includes all conductors crossed by
cutting current.
IRRADIATION PRODUCED BY PLASMA
ARC MAY DAMAGE THE EYES AND
CAUSE SKIN BURNS.
- Always protect the eyes with non-actinic glasses for iron
soldering set on masks or on graduation helmets: DIN 4-
10, depending on the cutting mode (close or distant
mode), and on the intensity of current.
- Wear protective clothing without exposing the skin to UV
rays produced by the arc.
- Make sure that everybody standing in proximity is
protected by the harmful effects of the arc.
SMOKE AND GAS MAY BE DANGEROUS
TO YOUR HEALTH.
- Ensure a proper change of air as well as the existence of
smoke suction devices in the area of the cutting arc. Ex.:
suction benches or at water level.
- Use individual respirators if ventilation is not enough to
intercept all smokes and gases.
- Do not cut material cleaned with chlorinated solvents or
near said solvents: vapors from the action of arc UV rays
may produce toxic gases.
- Avoid cutting on painted, galvanic coated surfaces or
parts dirty with oil or grease; clean the part thoroughly
before cutting it.
NOISE MAY DAMAGE HEARING.
- The level of noise produced by the cutting arc may exceed
85 dB (A).
- Check the level of INDIVIDUAL DAILY EXPOSURE to the
noise.
- Use proper means of individual protection in case the limit
is exceeded.
FIRE AND EXPLOSIONS MAY BE IGNITED
BY SPARKS AND HOT SLAGS.
- Do not cut on containers and pipes containing inflammable
products or liquid and gaseous fuels.
- Remove all inflammable material from the cutting area,
wastes included, ( rags, cartons, etc.) within a range of 10
meters.
- Make sure there are proper fire proof means in the cutting
area.

2. GENERAL INFORMATION

PLASMA ARC AND BASIC PRINCIPLES
FOR THE PERFORMANCE OF PLASMA
CUTTING.
- Plasma is a gas which is heated at a very high
temperature and ionized so as to become an electic
conductor.
- This cutting procedure uses plasma to transfer the electric
arc to the metal part which is melted by the heat and then
separated.
- The torch requires compressed air coming from one feed
source both for plasma and for protection and cooling gas.
- The cycle is started by a high frequency/high tension arc
("HF") which ignites a pilot arc between the electrode ( -
polarity) and the nozzle of the torch ( + polarity).
- By bringing the torch near the part to be cut, which is
connected to the + polarity of the current source, the pilot
arc is then moved away thus creating a plasma arc
between the electrode (-) and the part itself (cutting arc).
- The pilot arc and HF are excluded as soon as the plasma
arc settles between the electrode and the part.
- Pilot arc max. time is 2 seconds; if transfer is not
accomplished by this time the cycle is immediately
stopped with the exception of cooling air.
- In order to initialize a new cycle it is necessary to release
the torch button and then to push it again.
UNIT COMPOSITION.
The plasma cutting system includes:
- SPL SOURCE OF CURRENT
complete with:
. Wheels (assemblage kit)
. Feeding cable m
. Kit of connectors for compressed air
. Ground cable and pliers m
. Centralized connector for the torch (1)
- HP PLASMA CUTTING TORCH (2)
with:
. spare kits (electrodes, nozzles).
NOTES:
(1) Available only on models SPL 90/3 and 150/3; the direct
connection from the outside is not possible for model SPL
60/3.
(2) Standard cable length: 6 mt; on request cable length may
- 16 -