Tweco 95 S Thermal Arc(Nov2010) - Manual (Page 19)

INTRODUCTION THERMAL ARC 95 S
Introduction 2-1 Manual 0-5175
SECTION 2:
INTRODUCTION
2.01 How to Use This Manual
This Operating Manual usually applies to the part numbers
listed on page i. If none are underlined, they are all covered
by this manual. To ensure safe operation, read the entire
manual, including the chapter on safety instructions and
warnings. Throughout this manual, the word WARNING,
CAUTION and NOTE may appear. Pay particular attention
to the information provided under these headings. These
special annotations are easily recognized as follows:
!
WARNING
Gives information regarding possible personal
injury. Warnings will be enclosed in a box
such as this.
CAUTION
Refers to possible equipment damage. Cau-
tions will be shown in bold type.
NOTE
Offers helpful information concerning certain
operating procedures. Notes will be shown
in italics
2.02 Equipment Identification
The unit’s identification number (specification or part
number), model, and serial number usually appear on
a nameplate attached to the machine. Equipment which
does not have a nameplate attached to the machine is
identified only by the specification or part number printed
on the shipping container. Record these numbers for
future reference.
2.03 Receipt of Equipment
When you receive the equipment, check it against the
invoice to make sure it is complete and inspect the
equipment for possible damage due to shipping. If there is
any damage, notify the carrier immediately to file a claim.
Furnish complete information concerning damage claims
or shipping errors to the location in your area listed in the
inside back cover of this manual. Include all equipment
identification numbers as described above along with a
full description of the parts in error.
2.04 Description
This compact inverter welding machine has infinitely
adjustable welding current from 5 to 95 amps. It uses
standard general purpose SMAW 3/32” (2.5mm)
electrodes for light gauge work, generally less than 1/8”
(3.2mm) thick. The unit also has a GTAW (Lift TIG) welding
mode that offers stable TIG welding characteristics when
used with a suitable TIG torch and shielding gas.
2.05 Transportation Methods
CAUTION
ELECTRIC SHOCK can kill. DO NOT TOUCH
live electric parts. Disconnect input power
conductors from de-energized supply line
before moving the welding power source.
!
WARNING
FALLING EQUIPMENT can cause serious per-
sonal injury and equipment damage.
Lift unit with handle on top of case. Use handcart or similar
device of adequate capacity. If using a fork lift vehicle,
place secure unit on a proper skid before transporting.
2.06 Duty Cycle
The rated duty cycle of a Welding Power Source, is a
statement of the time it may be operated at its rated
welding current output without exceeding the temperature
limits of the insulation of the component parts. To explain
the 10 minute duty cycle period the following example is
used. Suppose a Welding Power Source is designed to
operate at a 40% duty cycle, 75 amperes at 23 volts. This
means that it has been designed and built to provide the
rated amperage (75A) for 4 minutes, i.e. arc welding time,
out of every 10 minute period (40% of 10 minutes is 4
minutes). During the other 6 minutes of the 10 minute
period the Welding Power Source must idle and allowed
to cool.