Tweco 161 S UK - Manual (Page 15)

INTRODUCTION THERMAL ARC 161 S
Manual 0-5183 2-1 Introduction
SECTION 2:
INTRODUCTION
2.01 How to Use This Manual
This Operating Manual usually applies to the part num-
bers 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 per-
sonal 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 10 to 160 amps. It uses
standard general purpose STICK (MMA) 2.5mm (3/32”)
electrodes for light gauge work, generally less than
1/8” (3.2mm) thick and STICK (MMA) 1/8” (3.2mm)
electrodes for heavier material. The unit also has a
LIFT TIG (GTAW) welding mode that offers stable TIG
welding characteristics when used with a suitable TIG
torch and shielding gas.
2.05 Transportation Methods
WARNING
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
personal 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
the percentage of a ten minute time period that it
may be operated at its rated output current without
exceeding the temperature limits of the insulation of the
component parts. To explain the 10 minute duty cycle
period, suppose a Welding Power Source is designed to
operate with a 35% duty cycle at 160 amperes and 26.4
volts. This means that it has been designed and built
to provide the rated amperage (160A) for 3.5 minutes,
i.e. arc welding time, out of every 10 minute period
(35% of 10 minutes is 3.5 minutes). During the other
6.5 minutes of the 10 minute period the Welding Power
Source must idle and be allowed to cool.