Tweco 175 SE Arc Master - Manuel (Page 19)

INTRODUCTION ARC MASTER 175 SE
Manual 0-5054 2-1 iNTRODUCTION
SECTION 2:
INTRODUCTION
2.01 How to Use This Manual
This Operating Manual applies 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.
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 ship-
ping 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 adjust-
able welding current from 5 to 175 amps. It runs standard
general purpose SMAW 3/32” (2.5mm) electrodes for light
gauge work, generally less than 1/8” (3.2mm) thick, and
SMAW 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
CAUTION
ELECTRIC SHOCK can kill. DO NOT TOUCH
live electric parts. Disconnect input power con-
ductors 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 state-
ment 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 20% duty cycle, 175 amperes at 27 volts. This means that
it has been designed and built to provide the rated amperage
(175A) for 2 minutes, i.e. arc welding time, out of every 10
minute period (20% of 10 minutes is 2 minutes). During
the other 8 minutes of the 10 minute period the Welding
Power Source must idle and allowed to cool.