Selco Genesis 90, Repair Manual

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4.1 SAFETY
Prior to performing any operation on the machine, make sure that you
have thoroughly read and understood the contents of this manual.
Do not perform modifications or maintenance operations which are
not prescribed.
For any doubt or problem regarding the use of the machine, even if not
described herein, consult qualified personnel.
The productor cannot be held responsible for damage to persons or
property caused by the operator's failure to read or apply the contents
of this manual.
4.1.1 Operator and other persons’ protection
The welding (cutting) process is a noxious source of radiations, noise,
heat and gas emissions. Persons fitted with pacemakers must consult
their doctor before undertaking arc welding or plasma cut operations.
If the above prescription is not observed, the manufacturer accepts
no liability for any damages sustained in the event of an accident.
Personal protection:
- Do not wear contact lenses!!!
- Keep a first aid kit ready for use.
- Do not underestimate any burning or injury.
- Wear protective clothing to protect your skin from the arc rays,
sparks or incandescent metal, and a helmet or a welding cap.
- Wear masks with side face guards and suitable protection filter (at
least NR10 or above) for the eyes.
- Use headphones if dangerous noise levels are reached during the
welding (cutting).
Always wear safety goggles with side guards, especially during the
manual or mechanical removal of welding (cutting) slags.
lf you feel an electric shock, interrupt the welding (cutting) ope-
rations immediately.
Other persons’ protection:
- Position a fire-retardant partition to protect the surrounding area
from rays, sparks and incandescent slags.
- Advise any person in the vicinity not to stare at the arc or at the
incandescent metal and to get an adequate protection.
- lf the noise level exceeds the limits prescribed by the law, delimit
the work area and make sure that anyone getting near it is pro-
tected with headphones or earphones.
4.1.2 Fire/explosion prevention
The welding (cutting) process may cause fires and/or explosions.
- Compressed gas cylinders are dangerous; consult the supplier
before handling them.
Protect them from:
- direct exposure to sun rays;
- flames;
- sudden changes in temperature;
- very low temperatures.
Compressed gas cylinders must be fixed to the walls or to other
supports, in order to prevent them from falling.
- Clear the work area and the surrounding area from any
infiammable or combustible materials or objects.
- Position a fire-fighting device or material near the work area.
- Do not perform welding or cutting operations on closed contai-
ners or pipes.
- lf said containers or pipes have been opened, emptied and care-
fully cleaned, the welding (cutting) operation must in any case be
performed with great care.
- Do not weld (cut) in places where explosive powders, gases or
vapours are present.
- Do not perform welding (cutting) operations on or near contai-
ners under pressure.
- Don’t use this machine to defrost pipes.
4.1.3 Protection against fumes and gases
Fumes, gases and powders produced during the welding (cutting)
process can be noxious for your health.
- Do not use oxygen for the ventition.
- Provide for proper ventilation, either natural or forced, in the
work area.
- In case of welding (cutting) in extremely small places the work of
the operator carrying out the weld should be supervised by a col-
league standing outside.
- Position gas cylinders outdoors or in places with good ventilation.
- Do not perform welding (cutting) operations near degreasing or
painting stations.
4.1.4 Positioning the power source
Keep to the following rules:
- Easy access to the equipment controls and connections must be
provided.
- Do not position the equipment in reduced spaces.
- Do not place the generator on surfaces with inclination excee-
ding 10° with respect to the horizontal plane.
4.1.5 lnstalling the apparatus
- Comply with the local safety regulations for the installation and carry
out the maintenance service of the machine according to the con-
structor's directions.
- Any maintenance operation must be performed by qualified per-
sonnel only.
- The connection (series or parallel) of the generators is prohibited.
- Before operating inside the generator, disconnect the power supply.
- Carry out the routine maintenance on the equipment.
- Make sure that the supply mains and the earthing are sufficient and
adequate.
- The earth cable must be connected as near the area to be welded
(cut) as possible.
- Take the precautions relevant to the protection degree of the power
source.
- Before welding (cutting) , check the condition of the electric cables
and of the torch, and if they are damaged repair or change them.
- Neither get on the material to be welded (cut), nor lean against it.
- The operator must not touch two torches or two electrode hol-
ders at the same time .
4.1.6 Precautions against risks connected with the use
of compressed air
Connect the air supply to the coupling provided, making sure pres-
sure is at least 6 bars (0.6 MPa) with a minimum flow rate of 200
l/min. If the air supply comes from pressure reducer of a compres-
sor or a central system, the reducer must be set to the maximum
outlet pressure that must not, however, exceed 8 bars (0.8 MPa). If
the air supply comes from a compressed air canister it must be
equipped with a pressure regulator.
A compressed air canister must never be directly
coupled to the machine pressure reducer. Pressure
might exceed the capacity of the reducer which might
consequently explode.
The manufacturer accepts no liability if the above prescription is
not duly observed and complied with at all times.
Description of operation of the power sources 7
WARNING
4) DESCRIPTION OF OPERATION OF THE POWER SOURCES
Use and routine maintenance (excerpt from the "Instructions for use" manual provided with each power source).