Tweco 190 MIG Thermal Arc Fabricator - Manual (Page 18)

FABRICATOR 190 WELDING MACHINE
INTRODUCTION 2-2 Manual No. 0-4838
2.04 General Information
The Fabricator 190 is a semiautomatic Gas Metal Arc
Welder (GMAW/FCAW-commonly MIG) with an integrated
wire feed unit. The Fabricator 190 is designed and
manufactured to meet the requirements of CSA and IEC
60974-1 standards.
The Fabricator 190 gives excellent performance on mild
steel, stainless steel, aluminum, silicon bronze and some
hard facing wires with Argon based shielding gases. The
Power Supply also gives excellent results on mild steel
using Carbon Dioxide shielding gas.
The Fabricator 190 is supplied as a complete, ready-to-
weld package including a wheel base, cylinder tray, MIG
gun, work lead, and flow regulator. The following
instructions detail how to correctly set up the welder and
give guidelines on gaining the best production efficiency
from the Power Supply. Please read these instructions
thoroughly before using your Fabricator welder.
2.05 Safety
The following basic safety rules should always be followed:
Ensure the machine is correctly installed, if necessary,
by a qualified electrician.
Ensure the Power Supply is grounded correctly
(electrically) in accordance with local regulations.
Excessive heat in the welding cables may cause fire. Never
weld with poor electrical connections, damaged welding
cables or exceed the welding cable current rating as this
will produce excessive heat and may cause a fire.
Always wear the correct protective clothing for protection
from sparks, molten particles and arc rays.
When welding in confined spaces, always ensure adequate
ventilation and constant observation of the operator.
Keep combustible materials away from the welding area.
Have a suitable fire extinguisher handy.
Never watch the welding arc with naked eyes. Always use
and wear a welding mask fitted with the correct filter lens.
Do not stand on damp ground when welding.
For more complete safety advice, please read Section 1.
2.06 Protective Filter Lenses
Protective filter lenses are provided to reduce the intensity
of radiation entering the eye thus filtering out harmful
infrared, ultraviolet radiation and a percentage of the
visible light. Such filter lenses are incorporated within face
shields. To prevent damage to the filter lenses from molten
or hard particles an additional hard clear glass or special
plastic external cover lens should be used. This cover
lens should always be kept in place and replaced before
the damage impairs your vision while welding.
2.07 Welding Protection
Approximate range of
welding current
Filter lens
required for
MIG
Up to 150 Shade 10
150-250 Shade 11
250-300 Shade 12
300-350 Shade 13
Over 350 Shade 14
Filter Lens Size Versus Welding Current
It is recommended to use a welding helmet, conforming
to the local relevant Standards when electric arc welding.
Use a welding helmet in serviceable condition with the
correct filter lens. Refer to Table 2-1 above and AWS table
in Section 1.01 of this manual.