RETURN TO MAIN INDEX
IM687
Square Wave TIG 175 PRO February, 2002
10732
For use with machines having Code Numbers:
10733
Safety Depends on You
Lincoln arc welding and cutting
equipment is designed and built
with safety in mind. However, your
overall safety can be increased by
proper installation ... and thoughtful
operation on your part. DO NOT
INSTALL, OPERATE OR REPAIR
THIS EQUIPMENT WITHOUT
READING THIS MANUAL AND
THE SAFETY PRECAUTIONS
CONTAINED THROUGHOUT.
And, most importantly, think before
you act and be careful.
Date of Purchase:
Serial Number:
Code Number:
Model:
Where Purchased:
OPERATOR’S MANUAL
Copyright © 2002 Lincoln Global Inc.
� World's Leader in Welding and Cutting Products �
� Sales and Service through Subsidiaries and Distributors Worldwide �
Cleveland, Ohio 44117-1199 U.S.A. TEL: 216.481.8100 FAX: 216.486.1751 WEB SITE: www.lincolnelectric.com
i i
SAFETY
WARNING
CALIFORNIA PROPOSITION 65 WARNINGS
For Gasoline Engines: The engine exhaust from
For Diesel Engines: Diesel engine exhaust and
this product contains chemicals known to the
some of its constituents are known to the State
State of California to cause cancer, birth defects,
of California to cause cancer, birth defects, and
or other reproductive harm.
other reproductive harm.
ARC WELDING CAN BE HAZARDOUS. PROTECT YOURSELF AND OTHERS FROM POSSIBLE SERIOUS INJURY OR DEATH.
KEEP CHILDREN AWAY. PACEMAKER WEARERS SHOULD CONSULT WITH THEIR DOCTOR BEFORE OPERATING.
Read and understand the following safety highlights. For additional safety information, it is strongly recommended that you
purchase a copy of “Safety in Welding & Cutting - ANSI Standard Z49.1� from the American Welding Society, P.O. Box 351040,
Miami, Florida 33135 or CSA Standard W117.2-1974. A Free copy of “Arc Welding Safety� booklet E205 is available from the
Lincoln Electric Company, 22801 St. Clair Avenue, Cleveland, Ohio 44117-1199.
BE SURE THAT ALL INSTALLATION, OPERATION, MAINTENANCE AND REPAIR PROCEDURES ARE
PERFORMED ONLY BY QUALIFIED INDIVIDUALS.
FOR ENGINE 1.h. To avoid scalding, do not remove the
radiator pressure cap when the engine is
powered equipment. hot.
1.a. Turn the engine off before troubleshooting and maintenance
work unless the maintenance work requires it to be running.
____________________________________________________
1.b.Operate engines in open, well-ventilated
areas or vent the engine exhaust fumes
outdoors.
ELECTRIC AND
MAGNETIC FIELDS
____________________________________________________
may be dangerous
1.c. Do not add the fuel near an open flame weld-
ing arc or when the engine is running. Stop
the engine and allow it to cool before refuel- 2.a. Electric current flowing through any conductor causes
ing to prevent spilled fuel from vaporizing on localized Electric and Magnetic Fields (EMF). Welding
contact with hot engine parts and igniting. Do current creates EMF fields around welding cables and
not spill fuel when filling tank. If fuel is spilled, welding machines
wipe it up and do not start engine until fumes
have been eliminated. 2.b. EMF fields may interfere with some pacemakers, and
____________________________________________________ welders having a pacemaker should consult their physician
1.d. Keep all equipment safety guards, covers and devices in posi- before welding.
tion and in good repair.Keep hands, hair, clothing and tools
away from V-belts, gears, fans and all other moving parts 2.c. Exposure to EMF fields in welding may have other health
when starting, operating or repairing equipment. effects which are now not known.
____________________________________________________
2.d. All welders should use the following procedures in order to
1.e. In some cases it may be necessary to remove safety
minimize exposure to EMF fields from the welding circuit:
guards to perform required maintenance. Remove
guards only when necessary and replace them when the
2.d.1. Route the electrode and work cables together - Secure
maintenance requiring their removal is complete.
them with tape when possible.
Always use the greatest care when working near moving
parts.
2.d.2. Never coil the electrode lead around your body.
___________________________________________________
1.f. Do not put your hands near the engine fan.
2.d.3. Do not place your body between the electrode and
Do not attempt to override the governor or
idler by pushing on the throttle control rods work cables. If the electrode cable is on your right
while the engine is running. side, the work cable should also be on your right side.
2.d.4. Connect the work cable to the workpiece as close as
possible to the area being welded.
___________________________________________________
1.g. To prevent accidentally starting gasoline engines while 2.d.5. Do not work next to welding power source.
turning the engine or welding generator during maintenance
work, disconnect the spark plug wires, distributor cap or
magneto wire as appropriate. Mar �95
SQUARE WAVE TIG 175 PRO
ii ii
SAFETY
ARC RAYS can burn.
ELECTRIC SHOCK can kill.
3.a. The electrode and work (or ground) circuits 4.a. Use a shield with the proper filter and cover
are electrically “hot� when the welder is on. plates to protect your eyes from sparks and
Do not touch these “hot� parts with your bare the rays of the arc when welding or observing
skin or wet clothing. Wear dry, hole-free open arc welding. Headshield and filter lens
gloves to insulate hands. should conform to ANSI Z87. I standards.
4.b. Use suitable clothing made from durable flame-resistant
3.b. Insulate yourself from work and ground using dry insulation.
material to protect your skin and that of your helpers from
Make certain the insulation is large enough to cover your full
the arc rays.
area of physical contact with work and ground.
4.c. Protect other nearby personnel with suitable, non-flammable
In addition to the normal safety precautions, if welding
screening and/or warn them not to watch the arc nor expose
must be performed under electrically hazardous
themselves to the arc rays or to hot spatter or metal.
conditions (in damp locations or while wearing wet
clothing; on metal structures such as floors, gratings or
scaffolds; when in cramped positions such as sitting,
FUMES AND GASES
kneeling or lying, if there is a high risk of unavoidable or
accidental contact with the workpiece or ground) use
can be dangerous.
the following equipment:
5.a. Welding may produce fumes and gases
� Semiautomatic DC Constant Voltage (Wire) Welder.
hazardous to health. Avoid breathing these
� DC Manual (Stick) Welder.
fumes and gases.When welding, keep
� AC Welder with Reduced Voltage Control.
your head out of the fume. Use enough
ventilation and/or exhaust at the arc to keep
3.c. In semiautomatic or automatic wire welding, the electrode,
fumes and gases away from the breathing zone. When
electrode reel, welding head, nozzle or semiautomatic
welding with electrodes which require special
welding gun are also electrically “hot�.
ventilation such as stainless or hard facing (see
instructions on container or MSDS) or on lead or
3.d. Always be sure the work cable makes a good electrical
cadmium plated steel and other metals or coatings
connection with the metal being welded. The connection
which produce highly toxic fumes, keep exposure as
should be as close as possible to the area being welded.
low as possible and below Threshold Limit Values (TLV)
using local exhaust or mechanical ventilation. In
3.e. Ground the work or metal to be welded to a good electrical
confined spaces or in some circumstances, outdoors, a
(earth) ground.
respirator may be required. Additional precautions are
also required when welding on galvanized steel.
3.f. Maintain the electrode holder, work clamp, welding cable and
welding machine in good, safe operating condition. Replace
5.b. Do not weld in locations near chlorinated hydrocarbon vapors
damaged insulation.
coming from degreasing, cleaning or spraying operations.
The heat and rays of the arc can react with solvent vapors to
3.g. Never dip the electrode in water for cooling.
form phosgene, a highly toxic gas, and other irritating
products.
3.h. Never simultaneously touch electrically “hot� parts of
electrode holders connected to two welders because voltage
5.c. Shielding gases used for arc welding can displace air and
between the two can be the total of the open circuit voltage
cause injury or death. Always use enough ventilation,
of both welders.
especially in confined areas, to insure breathing air is safe.
3.i. When working above floor level, use a safety belt to protect
5.d. Read and understand the manufacturer’s instructions for this
yourself from a fall should you get a shock.
equipment and the consumables to be used, including the
material safety data sheet (MSDS) and follow your
3.j. Also see Items 6.c. and 8.
employer’s safety practices. MSDS forms are available from
your welding distributor or from the manufacturer.
5.e. Also see item 1.b.
Mar �95
SQUARE WAVE TIG 175 PRO
iii iii
SAFETY
WELDING SPARKS can CYLINDER may explode
cause fire or explosion. if damaged.
6.a. Remove fire hazards from the welding area.
7.a. Use only compressed gas cylinders
If this is not possible, cover them to prevent
containing the correct shielding gas for the
the welding sparks from starting a fire.
process used and properly operating
Remember that welding sparks and hot
regulators designed for the gas and
materials from welding can easily go through small cracks
pressure used. All hoses, fittings, etc. should be suitable for
and openings to adjacent areas. Avoid welding near
the application and maintained in good condition.
hydraulic lines. Have a fire extinguisher readily available.
7.b. Always keep cylinders in an upright position securely
6.b. Where compressed gases are to be used at the job site,
chained to an undercarriage or fixed support.
special precautions should be used to prevent hazardous
situations. Refer to “Safety in Welding and Cutting� (ANSI
7.c. Cylinders should be located:
Standard Z49.1) and the operating information for the
� Away from areas where they may be struck or subjected to
equipment being used.
physical damage.
6.c. When not welding, make certain no part of the electrode
� A safe distance from arc welding or cutting operations and
circuit is touching the work or ground. Accidental contact can
any other source of heat, sparks, or flame.
cause overheating and create a fire hazard.
7.d. Never allow the electrode, electrode holder or any other
6.d. Do not heat, cut or weld tanks, drums or containers until the
electrically “hot� parts to touch a cylinder.
proper steps have been taken to insure that such procedures
will not cause flammable or toxic vapors from substances
7.e. Keep your head and face away from the cylinder valve outlet
inside. They can cause an explosion even though they have
when opening the cylinder valve.
been “cleaned�. For information, purchase “Recommended
Safe Practices for the Preparation for Welding and Cutting of
7.f. Valve protection caps should always be in place and hand
Containers and Piping That Have Held Hazardous
tight except when the cylinder is in use or connected for
Substances�, AWS F4.1 from the American Welding Society
use.
(see address above).
7.g. Read and follow the instructions on compressed gas
6.e. Vent hollow castings or containers before heating, cutting or
cylinders, associated equipment, and CGA publication P-l,
welding. They may explode.
“Precautions for Safe Handling of Compressed Gases in
Cylinders,� available from the Compressed Gas Association
6.f. Sparks and spatter are thrown from the welding arc. Wear oil
1235 Jefferson Davis Highway, Arlington, VA 22202.
free protective garments such as leather gloves, heavy shirt,
cuffless trousers, high shoes and a cap over your hair. Wear
ear plugs when welding out of position or in confined places.
FOR ELECTRICALLY
Always wear safety glasses with side shields when in a
powered equipment.
welding area.
6.g. Connect the work cable to the work as close to the welding
8.a. Turn off input power using the disconnect
area as practical. Work cables connected to the building
switch at the fuse box before working on
framework or other locations away from the welding area
the equipment.
increase the possibility of the welding current passing
through lifting chains, crane cables or other alternate circuits.
8.b. Install equipment in accordance with the U.S. National
This can create fire hazards or overheat lifting chains or
Electrical Code, all local codes and the manufacturer’s
cables until they fail.
recommendations.
6.h. Also see item 1.c.
8.c. Ground the equipment in accordance with the U.S. National
Electrical Code and the manufacturer’s recommendations.
Mar �95
SQUARE WAVE TIG 175 PRO
iv iv
SAFETY
zones où l’on pique le laitier.
PRÉCAUTIONS DE SÛRETÉ
6. Eloigner les matériaux inflammables ou les recouvrir afin de
Pour votre propre protection lire et observer toutes les instructions
prévenir tout risque d’incendie dû aux étincelles.
et les précautions de sûreté specifiques qui parraissent dans ce
manuel aussi bien que les précautions de sûreté générales suiv-
7. Quand on ne soude pas, poser la pince à une endroit isolé de
antes:
la masse. Un court-circuit accidental peut provoquer un
échauffement et un risque d’incendie.
Sûreté Pour Soudage A L’Arc
1. Protegez-vous contre la secousse électrique:
8. S’assurer que la masse est connectée le plus prés possible de
la zone de travail qu’il est pratique de le faire. Si on place la
a. Les circuits à l’électrode et à la piéce sont sous tension
masse sur la charpente de la construction ou d’autres endroits
quand la machine à souder est en marche. Eviter toujours
éloignés de la zone de travail, on augmente le risque de voir
tout contact entre les parties sous tension et la peau nue
passer le courant de soudage par les chaines de levage,
ou les vétements mouillés. Porter des gants secs et sans
câbles de grue, ou autres circuits. Cela peut provoquer des
trous pour isoler les mains.
risques d’incendie ou d’echauffement des chaines et des
b. Faire trés attention de bien s’isoler de la masse quand on
câbles jusqu’� ce qu’ils se rompent.
soude dans des endroits humides, ou sur un plancher met-
allique ou des grilles metalliques, principalement dans
9. Assurer une ventilation suffisante dans la zone de soudage.
les positions assis ou couché pour lesquelles une grande
Ceci est particuliérement important pour le soudage de tôles
partie du corps peut être en contact avec la masse.
galvanisées plombées, ou cadmiées ou tout autre métal qui
c. Maintenir le porte-électrode, la pince de masse, le câble de
produit des fumeés toxiques.
soudage et la machine à souder en bon et sûr état defonc-
tionnement.
10. Ne pas souder en présence de vapeurs de chlore provenant
d.Ne jamais plonger le porte-électrode dans l’eau pour le
d’opérations de dégraissage, nettoyage ou pistolage. La
refroidir.
chaleur ou les rayons de l’arc peuvent réagir avec les vapeurs
e. Ne jamais toucher simultanément les parties sous tension
du solvant pour produire du phosgéne (gas fortement toxique)
des porte-électrodes connectés à deux machines à soud-
ou autres produits irritants.
er parce que la tension entre les deux pinces peut être le
total de la tension à vide des deux machines.
11. Pour obtenir de plus amples renseignements sur la sûreté, voir
f. Si on utilise la machine à souder comme une source de
le code “Code for safety in welding and cutting� CSA Standard
courant pour soudage semi-automatique, ces precautions
W 117.2-1974.
pour le porte-électrode s’applicuent aussi au pistolet de
soudage.
2. Dans le cas de travail au dessus du niveau du sol, se protéger
contre les chutes dans le cas ou on recoit un choc. Ne jamais
PRÉCAUTIONS DE SÛRETÉ POUR
enrouler le câble-électrode autour de n’importe quelle partie
LES MACHINES À SOUDER À
du corps.
TRANSFORMATEUR ET À
3. Un coup d’arc peut être plus sévère qu’un coup de soliel,
REDRESSEUR
donc:
a. Utiliser un bon masque avec un verre filtrant approprié
ainsi qu’un verre blanc afin de se protéger les yeux du ray- 1. Relier à la terre le chassis du poste conformement au code de
onnement de l’arc et des projections quand on soude ou l’électricité et aux recommendations du fabricant. Le dispositif
quand on regarde l’arc. de montage ou la piece à souder doit être branché à une
b. Porter des vêtements convenables afin de protéger la bonne mise à la terre.
peau de soudeur et des aides contre le rayonnement de
l‘arc. 2. Autant que possible, I’installation et l’entretien du poste seront
c. Protéger l’autre personnel travaillant à proximité au effectués par un électricien qualifié.
soudage à l’aide d’écrans appropriés et non-inflammables.
3. Avant de faires des travaux à l’interieur de poste, la debranch-
4. Des gouttes de laitier en fusion sont émises de l’arc de er à l’interrupteur à la boite de fusibles.
soudage. Se protéger avec des vêtements de protection libres
de l’huile, tels que les gants en cuir, chemise épaisse, pan- 4. Garder tous les couvercles et dispositifs de sûreté à leur
talons sans revers, et chaussures montantes. place.
5. Toujours porter des lunettes de sécurité dans la zone de
Mar. �93
soudage. Utiliser des lunettes avec écrans lateraux dans les
SQUARE WAVE TIG 175 PRO
v v
for selecting a QUALITY product by Lincoln Electric. We want you
Thank You to take pride in operating this Lincoln Electric Company product •â?¢â??
as much pride as we have in bringing this product to you!
Please Examine Carton and Equipment For Damage Immediately
When this equipment is shipped, title passes to the purchaser upon receipt by the carrier. Consequently, Claims
for material damaged in shipment must be made by the purchaser against the transportation company at the
time the shipment is received.
Please record your equipment identification information below for future reference. This information can be found
on your machine nameplate.
Model Name & Number _____________________________________
Code & Serial Number _____________________________________
Date of Purchase _____________________________________
Whenever you request replacement parts for or information on this equipment always supply the information you
have recorded above.
Read this Operators Manual completely before attempting to use this equipment. Save this manual and keep it
handy for quick reference. Pay particular attention to the safety instructions we have provided for your protection.
The level of seriousness to be applied to each is explained below:
WARNING
This statement appears where the information must be followed exactly to avoid serious personal injury or
loss of life.
CAUTION
This statement appears where the information must be followed to avoid minor personal injury or damage to
this equipment.
vi vi
TABLE OF CONTENTS
Page
Installation ..........................................................................................................Section A
Technical Specifications ...............................................................................................A-1
Saftey Precautions.. ............................................................................................................................................... .A-2
Select Suitable Location ........................................................................................A-2
Grinding .................................................................................................................A-2
Stacking .................................................................................................................A-2
Lifting .....................................................................................................................A-2
Tilting .....................................................................................................................A-2
Enviromental Rating ..............................................................................................A-2
Machine Grounding and High FREQUENCY INTERFERANCE PROTECTION ...................A-2,A-3
Input Connections ........................................................................................................A-3
Input Reconnect Procedure .........................................................................................A-3
Output Connections .....................................................................................................A-4
Connections For Tig (GTAW) Welding ............................................................A-4
Tig Torch Connections ....................................................................................A-4
Work Cable Connections ................................................................................A-4
Shielding Gas Connection ..............................................................................A-4
Remote Control Connection............................................................................A-5
Connections For Stick (SMAW) Welding .......................................................A-5
Stick Electrode Cable and Work Cable Connection .......................................A-5
OPERATION .........................................................................................................................................................Section B-1
Saftey Precautions .......................................................................................................B-1
Product Description......................................................................................................B-1
Included Equipment...............................................................................................B-1
GTAW (Tig Welding): ......................................................................................B-1
SMAW (Stick Welding):...................................................................................B-1
Installation and Startup: ..................................................................................B-1
Welding Capability .................................................................................................B-1
Controls and Settings ..........................................................................B-2 THRU B-3
Operating Steps.....................................................................................................B-3
Welding in Tig Mode .......................................................................................B-3
Remote Control Operation ..............................................................................B-3
Benefits of the square Wave Operation ..........................................................B-3
Welding in Stick Mode ..........................................................................................B-4
Accessories ............................................................................................................................................... .......Section C
Optional Equipment .....................................................................................................C-1
Maintenance......................................................................................................................................................Section D
Saftey Precautions.......................................................................................................D-1
Routine and Periodic Maintenance..............................................................................D-1
Troubleshooting.............................................................................................................................................Section E
Saftey Precautions .......................................................................................................E-1
How To Use TroubleShooting Guide............................................................................E-1
Troubleshooting.................................................................................................E-2 to E-7
Diagrams..............................................................................................................................................................Section F
Wiring Diagram 208/230 V Model...................................................................................................................F-1
Wiring Diagram 460/575 V Model...................................................................................................................F-2
Parts List................................................................................................................................................P373,P210,P66
A-1 A-1
INSTALLATION
TECHNICAL SPECIFICATIONS - SQUARE WAVE TIG 175 PR0 (K1478-3 & -4
INPUT - SINGLE PHASE ONLY
Code
Standard Input Current at
Number
Voltage Rated Output
10732
208/230/1/60 59/53 AC/DC Stick & DC TIG - 72/65 AC TIG
10733
460/575/1/60 27/22 AC/DC Stick & DC TIG - 33/27 AC TIG
RATED OUTPUT
Volts at Rated Amperes
Duty Cycle Amps
14.8 V AC/DC
GTAW 25% Duty Cycle 150
14.5 V AC/DC
40% Duty Cycle 125
14.3 V AC/DC
60% Duty Cycle 110
14.1V AC/DC
100% Duty Cycle 90
26.0 V AC/DC
SMAW 25% Duty Cycle 150
25.0 V AC/DC
40% Duty Cycle 125
24.4 V AC/DC
60% Duty Cycle 110
23.6 V AC/DC
100% Duty Cycle 90
OUTPUT
Maximum Open
Type of Output
Output Current Circuit Voltage
Range (STICK AND TIG) CC (Constant Current)
AC OCV: 74
10-175 Amps AC/DC
DC OCV: 59
AC and DC
RECOMMENDED INPUT WIRE AND FUSE SIZES(1)
For AC/DC Stick and DC TIG Welding at For AC TIG Welding at 150 A/25% Duty
150A/25% Duty Cycle and for AC TIG Welding up Cycle, Based on the 1996 U.S. National
to 110A/25% Duty Cycle. Based on the 1996 U.S. Electrical Code
National Electrical Code
Type 75°C
Type 75°C
Input Copper
Fuse
Input Copper
Type 75°C Type 75°C
Fuse Input
Ampere Ground Wire in
Voltage / (Super Lag) Ampere Copper Wire in Ground Wire in (Super Lag) Copper Wire in
or Breaker Rating on Conduit AWG Conduit AWG or Breaker Rating on Conduit AWG
phase/ Conduit AWG
Nameplate (IEC) Sizes
Size
Frequency (IEC) Sizes
(IEC) Sizes (IEC) Sizes
Size Nameplate
8 (8.2 mm2)
10 (5.2 mm2)
10 (5.2 mm2) 8 (8.2 mm2)
72
125
208/1/60 100 59
8 (8.2 mm2)
10 (5.2 mm2)
10 (5.2 mm2) 8 (8.2 mm2)
65
125
230/1/60 100 53
14 (2.1 mm2)
14 (2.1 mm2)
14 (2.1 mm2) 14 (2.1 mm2)
33
60
460/1/60 50 27
14 (2.1 mm2)
14 (2.1 mm2)
14 (2.1 mm2) 14 (2.1 mm2)
27
50
575/1/60 40 22
(1)
The National Electrical Code permits operation at rated output and duty cycle from a 50 amp receptacle when supply lines and fuses are sized per this table.
PHYSICAL DIMENSIONS
Height Width Depth Weight
Power 19.53 in. 13.72 in. 24.94 in. Approx. 200 lbs.
496 mm 349 mm 633 mm 90.9 kgs.
Source
Power Source 27.93 in. 19.22 in. 36.74 in. Approx. 230 lbs.
709 mm 488 mm 933 mm 105 kgs.
on
Undercarriage
SQUARE WAVE TIG 175 PRO
A-2 A-2
INSTALLATION
SAFETY PRECAUTIONS MACHINE GROUNDING AND HIGH FRE-
QUENCY INTERFERENCE PROTECTION
Read entire installation section before starting
installation.
The welder must be grounded. See your local and national
WARNING electrical codes for proper grounding methods.
The high frequency generator, being similar to a radio
ELECTRIC SHOCK can kill.
� Only qualified personnel should
transmitter, can be blamed for radio, TV and electronic
perform this installation.
equipment interference problems. These problems
� Turn the input power OFF at the
disconnect switch or fuse box
may be the result of radiated interference. Proper
before working on this
grounding methods can reduce or eliminate radiated
equipment.
interference.
� Do not touch electrically hot
parts.
Radiated interference can develop in the following four
� Always connect the SQUARE WAVE TIG 175 PRO to
a power supply grounded per the National ways:
Electrical Code and any local codes.
SELECT SUITABLE LOCATION 1. Direct interference radiated from the welder.
Place the welder where clean cooling air can freely cir-
2. Direct interference radiated from the welding leads.
culate in through the rear louvers and out through the
front and side louvers. Dirt, dust or any foreign mater-
3. Direct interference radiated from feedback into the
ial that can be drawn into the welder should be kept at
power lines.
a minimum. Failure to observe these precautions can
result in excessive operating temperatures and nui-
4. Interference from re-radiation of “pickup� by
sance shut-downs.
ungrounded metallic objects.
GRINDING
Do not direct grinding particles towards the welder. An Keeping these contributing factors in mind, installing
abundance of conductive material can cause mainte- equipment per the following instructions should mini-
nance problems. mize problems.
STACKING 1. Keep the welder power supply lines as short as pos-
Square Wave TIG 175 PRO’s cannot be stacked.
sible and enclose as much of them as possible in
rigid metallic conduit or equivalent shielding for a
LIFTING AND MOVING
distance of 50 feet (15.2m). There should be good
The Square Wave TIG 175 PRO should be lifted by two
electrical contact between this conduit and the
or more people or with a hoist. (It weighs approximate-
welder case ground. Both ends of the conduit
ly 200 lbs./90.9 kg.) Its lifting handles are designed to
should be connected to a driven ground and the
make lifting more convenient. An optional undercarriage
entire length should be continuous.
is available to easily move the unit. Refer to the
Accessories section of this manual.
2. Keep the work and electrode leads as short as pos-
sible and as close together as possible. Lengths
TILTING
should not exceed 25 ft (7.6m). Tape the leads
Each machine must be placed on a secure, level sur-
together when practical.
face, either directly or on a recommended undercar-
riage. The machine may topple over if this procedure
3. Be sure the torch and work cable rubber coverings
is not followed.
are free of cuts and cracks that allow high frequen-
cy leakage.
ENVIRONMENTAL RATING
The SQUARE WAVE TIG 175 PRO power source carries an
IP21 environmental rating. It may be used in normal industri- 4. Keep the torch in good repair and all connections
al and commercial environments. Avoid using it in environ- tight to reduce high frequency leakage.
ments which have falling water such as rain. Read and fol-
low “Electric Shock Warnings� in the Safety section if weld- 5. The work piece must be connected to an earth
ing must be performed under electrically hazardous condi- ground close to the work clamp, using one of the
tions such as welding in wet areas or on or in the workpiece.
following methods:
SQUARE WAVE TIG 175 PRO
A-3 A-3
INSTALLATION
INPUT RECONNECT PROCEDURE
a) A metal underground water pipe in direct contact
with the earth for ten feet or more. On multiple input voltage welders, be sure the machine
is connected per the following instructions for the volt-
b) A 3/4� (19mm) galvanized pipe or a 5/8� (16mm) age being supplied to the welder.
solid galvanized iron, steel or copper rod driven
at least eight feet into the ground.
CAUTION
The ground should be securely made and the ground- Failure to follow these instructions can cause immedi-
ing cable should be as short as possible using cable of ate failure of components within the welder.
the same size as the work cable, or larger. Grounding ___________________________________________
to the building frame electrical conduit or a long pipe
system can result in re-radiation, effectively making Multiple voltage models are shipped connected for the
these members radiating antennas. highest voltage. To change this connection refer to the
following instructions.
6. Keep cover and all screws securely in place.
7. Electrical conductors within 50 ft (15.2m) of the
welder should be enclosed in grounded rigid metal- WARNING
lic conduit or equivalent shielding, wherever possi-
ble. Flexible metallic conduit is generally not suit- ELECTRIC SHOCK can kill.
able.
� Turn the input power OFF at the
8. When the welder is enclosed in a metal building, the
disconnect switch or fuse box
metal building should be connected to several good
before working on this
earth driven electrical grounds (as in 5 (b) above)
equipment.
around the periphery of the building. For the lowest
rated voltage connection (Refer to figure A.1):
Failure to observe these recommended installation
procedures can cause radio or TV and electronic 1. Remove the sheet metal cover.
equipment interference problems and result in unsatis-
factory welding performance resulting from lost high 2. Disconnect lead H3 from the power switch and insu-
frequency power. late with the insulation from the H2 lead.
INPUT CONNECTIONS 3. Connect lead H2 to the power switch where H3 was
connected.
Be sure the voltage, phase, and frequency of the input
power is as specified on the rating plate, located on the 4. Tighten connections.
rear of the machine.
5. Replace sheet metal cover and all screws
208/230 volt models have a NEMA 6-50P plug
attached to the input power cord and a NEMA 6-50R For the highest rated voltage connection (Refer to figure A.1):
receptacle is included. Other voltage models have an The machine is normally shipped connected for the
input power cord but no plug or receptacle. highest rated voltage, however verify the following:
Have a qualified electrician provide input power supply 1. Remove the sheet metal cover.
to the receptacle or cord in accordance with all local
and national electrical codes. Use a single phase line 2. Disconnect lead H2 from the power switch and insu-
or one phase of a two or three phase line. Choose an late with the insulation from the H3 lead.
input and grounding wire size according to local or
national codes. Refer to the Technical Specifications 3. Connect lead H3 to the line switch where H2 was
page at the beginning of this section. Fuse the input connected.
circuit with the recommended super lag fuses or delay
type1 circuit breakers. Using fuses or circuit breakers 4. Tighten connections.
smaller than recommended may result in “nuisance�
shut-offs from welder inrush currents even if not weld- 5. Replace sheet metal cover and all screws.
ing at high currents.
1Also called “inverse time� or “thermal/magnetic� circuit breakers; circuit
breakers which have a delay in tripping action that decreases as the magni-
tude of the current increases.
SQUARE WAVE TIG 175 PRO
A-4 A-4
INSTALLATION
A TIG welding torch with cable and connector is sup-
plied with the welder. Turn the Power Switch “OFF�.
Connect the torch cable quick connect plug into the
FOR LOWEST RATED VOLTAGE
Electrode/Gas Output Receptacle on the front of the
: H2 CONNECTED
welder and turn it clockwise until it is tight. This is a
FOR HIGHEST RATED VOLTAGE
: H3 CONNECTED quick connect terminal and also provides the gas con-
nection for the shielding gas to the torch.
LEAD H1
(DO NOT
REMOVE)
WARNING
To avoid receiving a high frequency shock, keep
the TIG torch and cables in good condition.
__________________________________________
INPUT LEADS
L1 & L2
WORK CABLE CONNECTION
A work cable with attached work clamp is factory con-
BACK VIEW OF LINE SWITCH
nected to the SQUARE WAVE TIG 175 PRO. To min-
imize high frequency interference, refer to Machine
Grounding and High Frequency Interference
FIGURE A.1 Reconnect Leads Protection section of this manual for the proper pro-
cedure on grounding the work clamp and work piece.
OUTPUT CONNECTIONS
SHIELDING GAS CONNECTION
An adjustable gas pressure regulator and flow gage is
supplied with the SQUARE WAVE TIG 175 PRO.
Obtain the necessary inert shielding gas (usually
argon). Connect the cylinder of gas with the pressure
regulator and flow gage. Install the gas hose between
ELECTRODE/GAS OUTLET
the regulator and gas inlet (located on the rear of the
RECEPTACLE
welder). The gas inlet has a 5/16-18 right hand female
thread; CGA #032.
The optional undercarriage features a pivoting platform
that simplifies loading and unloading of gas cylinders.
WARNING
WORK CABLE & CLAMP
CYLINDER could explode
if damaged.
� Keep cylinder upright and
chained to a support.
� Keep cylinder away from areas
where it could be damaged.
� Never allow the torch to touch the cylinder.
FIGURE A.2 Location of Output Connections
� Keep cylinder away from live electrical cir-
cuits.
CONNECTIONS FOR TIG (GTAW) WELDING � Maximum inlet pressure 150 psi.
___________________________________________
TIG TORCH CONNECTION
A cylinder is loaded by leaning it slightly sideways and
Refer to Included Equipment in the Operation Section
rolling it toward the platform. The cylinder’s weight will
of this manual for TIG welding equipment which is
push the platform downward against the floor, forming
included with the SQUARE WAVE TIG 175 PRO.
a ramp. At this point, the cylinder may be rolled up the
platform into its final position. Secure the cylinder in
place with the provided chain. Unload by following
SQUARE WAVE TIG 175 PRO
A-5 A-5
INSTALLATION
these steps in reverse.
REMOTE CONTROL CONNECTION
A remote control receptacle is provided on the case
front of the welder for connecting a remote control to
to the machine. A Foot Amptroltm, foot activated remote
control, is included with the SQUARE WAVE TIG 175
PRO. Refer to the Optional Accessories section of this
manual for other available remote controls.
CONNECTIONS FOR STICK (SMAW)
WELDING
STICK ELECTRODE CABLE AND WORK CABLE
CONNECTION
Refer to Included Equipment in the Operation Section
of this manual for STICK welding equipment which is
included with the SQUARE WAVE TIG 175 PRO.
An electrode holder with cable is supplied with the
SQUARE WAVE TIG 175 PRO. Turn the Power
Switch “OFF�. Connect the cable quick connect plug
into the Electrode/Gas Output Receptacle and turn it
clockwise until it is tight. The work cable and work
clamp are factory connected.
SQUARE WAVE TIG 175 PRO
B-1
OPERATION
B-1
SAFETY PRECAUTIONS PRODUCT DESCRIPTION
Read and understand this entire section before operat- The SQUARE WAVE TIG 175 PRO is a constant cur-
ing the machine. rent, single range AC/DC TIG (GTAW) arc welding
power source with built-in arc starter / stabilizer. It also
WARNING has stick welding (SMAW) capability.
The SQUARE WAVE TIG 175 PRO is recommended
ELECTRIC SHOCK
for the TIG (GTAW) and stick (SMAW) welding
can kill.
� Do not touch electrically live parts processes within its output capacity of 10 to 175 amps,
or electrode with skin or wet cloth- on both AC and DC polarity.
ing.
� Insulate yourself from work and
ground. INCLUDED EQUIPMENT
� Always wear dry insulating gloves.
� Read and follow “Electric Shock For GTAW (TIG Welding):
Warnings� in the Safety section if weld- � TIG torch, factory assembled with:
ing must be performed under electrical- � 12.5 ft (3.8m) one-piece cable
ly hazardous conditions such as weld- � 3/32� Collet body
ing in wet areas or on or in the work- � 3/32� Collet
piece. � Short backcap
Not assembled:
� 3/32� x 7� 2% Thoriated Tungsten Electrode
� Long backcap
FUMES AND GASES � 1/2� Diameter Alumina gas cup
can be dangerous.
� Keep your head out of fumes. � Adjustable argon gas pressure regulator and flow
� Use ventilation or exhaust to gage
remove fumes from breathing � Gas hose
zone. � Foot Amptroltm remote current control with 15ft
(4.6m) cable
For SMAW (Stick Welding):
� Electrode holder with cable and quick connect plug
WELDING SPARKS � Electrode sample pack.
can cause fire or
explosion For Installation and startup:
� Keep flammable material away. � “How To� VHS Videotape
� Do not weld on containers that � Work Cable and Clamp
have held combustibles. � Input Cord
� Input plug and receptacle (208/230 volt models only)
WELDING CAPABILITY
ARC RAYS
The SQUARE WAVE TIG 175 PRO is rated at 150
can burn.
amps, 15 volts, at 25% duty cycle on a ten minute
basis. It is capable of higher duty cycles at lower out-
� Wear eye, ear and body
put currents. It is capable of 175 amps, 27 volts at a
protection.
lower duty cycle. If the duty cycle is exceeded, a ther-
mal protector will shut off the output until the machine
Observe additional Safety Guidelines detailed in cools.
the beginning of this manual.
SQUARE WAVE TIG 175 PRO
B-2 B-2
OPERATION
CONTROLS AND SETTINGS
All operator controls and adjustments are located on the front of the SQUARE WAVE TIG 175 PRO. Refer to
Figure B.1 and corresponding explanations.
FIGURE B.1 - CONTROL PANEL
1 1. POWER SWITCH & LIGHT
2. TIG/STICK SWITCH
3. POLARITY SWITCH
4 4. CURRENT CONTROL
5. OVER TEMPERATURE LIGHT
6. REMOTE CONTROL CONNECTOR
7. ELECTRODE/ GAS OUTPUT RECEPTACLE
8. WORK CABLE & CLAMP
2 3
5
7
6
8
1. POWER SWITCH & LIGHT - Turns power on or
CAUTION
off to the welder. When switched “ON�, the
cooling fan runs and the light will illuminate indicat-
Do not switch the polarity switch while
ing that the power is on.
welding or damage may result to the
machine.
2. TIG/STICK SWITCH - Selects the mode of output,
------------------------------------------------------------------------
either TIG (GTAW) or Stick (SMAW). Refer to
Welding in TIG Mode and Welding in Stick Mode
4. CURRENT CONTROL - This control is active in
later in this chapter for information on how the
both TIG and Stick modes. In Stick mode the cur-
machine functions in each of these modes.
rent control sets the welding current. In TIG mode
this control sets the maximum current. The Amptroltm
3. POLARITY SWITCH - Allows you to select between
will adjust the welding current from the machine min-
welding in AC , DC - , or DC+ polar-
imum to this maximum setting.
ity. In DC + polarity the electrode is positive and the
work clamp is negative. Use DC + for most stick
5. OVER TEMPERATURE LIGHT - If the welder
welding. In DC - the electrode is negative and the
overheats due to blocked air flow, high ambient air
work clamp is positive. Use DC - for TIG welding
temperature, or exceeded duty cycle, an internal
stainless steel and mild steel. AC polarity is recom-
thermostat will open disabling the welding output
mended for TIG welding aluminum.
and this yellow light will illuminate. The cooling fans
will continue to run to cool the unit during this time.
The light will go out when the unit cools and the
thermostat resets.
SQUARE WAVE TIG 175 PRO
B-3 B-3
OPERATION
6. REMOTE CONTROL CONNECTOR - This connector REMOTE CONTROL OPERATION
provides connection for a remote control. See Remote
Control Operation in this section of the manual. A Foot Amptrolâ„? is included with the SQUARE WAVE
TIG 175 PRO for remote current control while TIG
7. ELECTRODE/GAS OUTPUT RECEPTACLE - This welding. An optional Hand Amptrol may also be used.
quick connect receptacle provides electrical connec- An optional Arc Start Switch may be used to start and
tion to the electrode holder and cable for Stick weld- stop the welding if no remote control of the current is
ing and a combined electrical and gas connection desired. Refer to the Accessories section of this man-
for the TIG torch when TIG welding. ual.
8. WORK CABLE - This work cable is factory con- Both the Hand and Foot Amptrol work in a similar man-
nected to the welder and is connected to the work ner. For simplicity, the following explanation will refer
piece to complete the welding circuit. Refer to only to “Amptrols�, meaning both Foot and Hand mod-
Machine Grounding and High Frequency els. The term “minimum� refers to a foot pedal in the
Interference Protection in the Installation section “up� position, as it would be with no foot pressure, or a
of this manual for the proper procedure on ground- Hand Amptrol in the relaxed position, with no thumb
ing the work clamp and work piece to minimize high pressure. “Maximum� refers to a fully depressed Foot
frequency interference. Amptrol, or a fully extended Hand Amptrol.
When the welder is in TIG mode activating the Amptrol
energizes the electrode terminal and varies the output
OPERATING STEPS welding current from its minimum value of 10 amps, to
the maximum value set by the Current Control on the
WELDING IN TIG MODE control panel. This helps eliminate accidental high cur-
rent damage to the work piece and/or tungsten, and
1. Connect the TIG torch and cable quick connect plug gives a fine control of the current. When the welder is
to the Electrode/Gas output receptacle. This recep- in the stick mode a remote control has no effect and is
tacle also contains an integral gas connection for the not used.
torch. Connect the work clamp to the work piece.
It is important to note that, in some cases, the tungsten
2. Set the TIG/STICK switch to “TIG�. will not start an arc at the minimum current because
the tungsten may be too large or cold. To start an arc
3. Set the Polarity Switch to DC- for welding steel or reliably, it is important to depress the Amptrol far
stainless steel; or to AC for welding aluminum. enough so that the machine output current is near the
tungsten operating range. For example, a 3/32� tung-
4. Connect the Foot Amptrol to the Remote Control Connector. sten may be used on DC- to weld the full range. To
start the weld, the operator may have to turn the cur-
5. Turn on the cylinder gas valve and adjust the flow rent control up and depress the Amptrol approximately
regulator to obtain desired flow. 1/4 of the way down. Depressing the Amptrol to its min-
imum position may not start the arc. Also if the current
6. Turn the power switch to “ON�. NOTE: There will be control is set too low, the arc may not start. In most
a 15 second gas flow when the power is turned on. cases, a large or cold tungsten will not readily establish
an arc at low currents. This is normal. In DC-, the
7. Set the Current Control on the control panel to the Square Wave 175 will start a 3/32, 2% thoriated tung-
maximum desired amps. sten electrode at 15 amperes provided the electrode
tip is properly grounded and not contaminated.
8. Depress the Foot Amptrol to energize the torch and
establish an an arc with the work piece. BENEFITS OF THE SQUARE WAVE DESIGN
NOTE: When the TIG/STICK switch is set to “TIG�, In AC TIG welding of aluminum, the positive portion of
depressing the remote control will start a 0.5 second gas the AC wave provides cleaning (removal of aluminum
pre-flow before energizing the TIG torch. When the remote oxide) of the work piece. This is desirable on materials
control is released the TIG torch is de-energized and gas with a heavy oxide coating such as aluminum.
flow will continue for a 15 second post flow. When the However the positive portion may also cause the elec-
polarity switch is set to DC, the TIG Arc Starter will turn on trode to overheat at high currents causing “tungsten
and off automatically to start and stabilize the arc. In AC the spitting�. The negative portion of the AC wave offers
TIG Arc Starter will turn on with the output and remain on no cleaning action but concentrates more heat on the
continuously until the remote control is released.
SQUARE WAVE TIG 175 PRO
B-4 B-4
OPERATION
work.
WARNING
The AC waveform of the SQUARE WAVE TIG 175
PRO optimizes cleaning and heating of the work. The
In Stick Mode the output terminal and
result is the capability to weld through the complete
electrode will be electrically hot
range of 10 to 175 amperes in AC TIG or DC- TIG
whenever the power switch is turned
requiring only one electrode, a 3/32� 2% thoriated
on.
tungsten
.
WELDING IN STICK MODE
1. Put the electrode holder and cable quick connect
plug into the electrode output receptacle. Turn clock-
wise until tight. Connect the work clamp to the work
piece. 6. Adjust the Current Control to the desired amps.
2. Set the TIG/STICK switch to “STICK�. 7. Strike an arc and weld.
3. Set the Polarity Switch for the type of electrode NOTE: When the TIG/STICK switch is set to “STICK�
being used (most commonly DC+). the output is always on when the power switch is on. A
remote control has no effect on the welding current and
4. Place the electrode in the electrode holder. the gas flow and high frequency TIG arc starter are dis-
abled.
5. Turn the power switch to “ON�.
RECOMMENDED ELECTRODE AMPERAGE RANGES - SQUARE WAVE TIG 175 PRO
The SQUARE WAVE TIG 175 PRO is rated from 10-175 Amps.
SMAW Process
ELECTRODE POLARITY 3/32" 1/8" 5/32"
Fleetweld 5P, Fleetweld 5P+ DC+ 40 - 70 75 - 130 90 - 175
Fleetweld 180 DC+ 40 - 80 55 - 110 105 - 135
Fleetweld 37 DC+ 70 - 95 100 - 135 145 - Max
Fleetweld 47 DC- 75 - 95 100 - 145 135 - Max
Jet-LH MR DC+ 85 - 110 110 - 160 130 - Max
Blue Max Stainless DC+ 40 - 80 75 - 110 95 - 110
Red Baron Stainless DC+ 40 - 70 60 - 100 90 - 140
Mild steel procedures are based on recommended procedures listed in C2.10 8/94 and the maximum rating of the SQUARE WAVE TIG 175 PRO
Jet-LH MR procedures are based on Jet-LH 78 MR
Blue Max procedures are based on C6.1 6/95
Red Baron Procedure are based on ES-503 10/93
GTAW Process
Electrode Polarity DC- AC Approximate Argon
Electrode Tip Prepration Sharpened Balled Gas Flow Rate
EWZr C.F.H. (l/min.)
Electrode Type
EWTh-1, EWCe-2 EWTh-1, EWTh-2
EWTh-2, EWLa-1 EWP EWCe-2, EWLa-1 Stainless
Electrode Size (in.) EWG EWG Aluminum Steel
.010 Up to 15 A. Up to 10 A. Up to 15 A. 3-8 (2-4) 3-8 (2-4)
.020 Up to 15 A. Up to 15 A. Up to 20 A. 5-10 (3-5) 5-10 (3-5)
.040 Up to 80 A. Up to 40 A. Up to 60 A. 5-10 (3-5) 5-10 (3-5)
1/16 Up to 150 A. Up to 100 A. Up to 130 A. 5-10 (3-5) 9-13 (4-6)
3/32 Up to MAX. A. Up to 160 A. Up to MAX. A. 13-17 (6-8) 11-15 (5-7)
1/8 X Up to MAX. A. X 15-23 (7-11) 11-15 (5-7)
Tungsten electrodes are classified as follows by the American Welding Society (AWS):
Pure ..................................EWP ........green
+1% Thoria .......................EWTh-1 ...yellow
+2% Thoria .......................EWTh-2 ...red
+2% Ceria.........................EWCe-2...orange
+1.5% Lanthana ...............EWLa-1 ...black
+0.15 to 0.40% Zirconia ...EWZr .......brown
Ceriated Tungsten is now widely accepted as a substitute for 2% Thoriated Tungsten in AC and DC applications.
SQUARE WAVE TIG 175 PRO
MAY96
C-1 C-1
ACCESSORIES
OPTIONAL EQUIPMENT
K964-1 Undercarriage with Pivoting Single Gas
TIG Torch Parts Kits - Parts kits are available for the
Cylinder Platform - This undercarriage features a piv-
LA-9 and LA-17 TIG torches. These kits include back
oting platform to easily load and unload the gas cylin-
cap, collets, collet bodies, nozzles and tungstens.
der without lifting. It was designed specifically for the
Order KP507 for LA-9 torches
SQUARE WAVE TIG 175 PRO power source, and
Order KP508 for LA-17 torches
accommodates 7� to 9 1/4� diameter gas cylinders. The
undercarriage comes completely assembled and
See publication E12.150 for parts kits breakdown.
mounts directly to the power source.
Cut Length Consumables - TIG welding filler metals
tm
K812 Hand Amptrol - A Lincoln Foot Amptrol is are available for welding stainless steel, mild steel, alu-
included with the SQUARE WAVE TIG 175 PRO for minum and copper alloys. See publication C9.10.
remote current control while TIG welding. The K812
Hand Amptrol may be used in place of the Foot Amptrol K1619-1 TIG Pulser - This TIG Pulser is a “pendant�
if a thumb operated remote control is desired. type providing pulsing capability to the Square Wave
TIG 175 Pro. The simple connection between machine
K814 Arc Start Switch - The Arc Start Switch may be and TIG Pulser makes it very easy to install and oper-
used instead of the Foot Amptrol included with the ate. It provides full range control of Pulse per second,
SQUARE WAVE TIG 175 PRO. It allows on/off TIG Peak current, Background current, and % Peak on
welding at the current set by the Current Control on the time.
control panel. The Arc Start Switch does not provide
remote current control.
Magnum® LA-9 and LA-17 TIG Torches - The fol-
lowing standard Magnum® TIG torches with one-piece
cable may be used with the SQUARE WAVE TIG 175
PRO.
� K1781-1 PTA-9 12.5 ft medium back cap
� K1781-3 PTA-9 25 ft medium back cap
� K1782-1 PTA-17 12.5 ft long back cap
� K1782-3 PTA-17 25 ft long back cap
NOTE: Each torch requires a quick connector plug
(S22529-1) and strain relief boot (M17255) be installed
onto the cable. Collets, collet bodies, and nozzles are
not included and must be ordered separately.
Quick Connect Plug (S22529-1) and Strain Relief
Boot (M17255) - One of each is shipped with the
welder to connect the Magnum LA-9 torch. If you do
not care to interchange these parts between torches
(one of each is required to connect Magnum LA-9 or
LA-17 TIG torches with one-piece cable to the
SQUARE WAVE TIG 175 PRO) you may order addi-
tional sets. The quick connect plug provides connec-
tion for both gas and welding current.
Tungstens, Collets, Collet Holders, Gas Cups,
Backcaps and Other Torch Parts - A Lincoln
Magnum LA-9 with 12.5 ft. one-piece cable is included
with the SQUARE WAVE TIG 175 PRO. Standard
Magnum® parts and accessories for this torch may be
used.
SQUARE WAVE TIG 175 PRO
D-1 D-1
MAINTENANCE
SAFETY PRECAUTIONS
WARNING
Use extreme caution when working with circuit of
WARNING the high frequency. The high voltages developed
can be lethal. Turn the input power off using the
ELECTRIC SHOCK can kill. disconnect switch or fuse box before working
inside machine. This is particularly important when
� Only qualified personnel should
working on the secondary circuit of the high volt-
perform this maintenance.
age transformer (T3) because the output voltage is
dangerously high.
� Turn the input power OFF at the
disconnect switch or fuse box
Refer to figure C.1. Note in highly dirty environments where there
before working on this
is an abundance of conductive contaminants, use a low pressure
equipment.
air stream or a firm piece of paper to clean the spark gap. Do not
disturb the factory setting.
� Do not touch electrically hot
parts.
To check the spark gap:
- Turn off input power as specified above.
- Remove the wraparound from the machine, the spark gap is
WARNING located on the lower right side.
- Check the spark gap with a feeler gauge.
To avoid receiving a high frequency shock, keep the
If adjustment is needed:
TIG torch and cables in good condition.
- Adjust the gap by loosening the allen head screw in one of the
aluminum blocks, and tighten the screw in the new position.
ROUTINE AND PERIODIC MAINTENANCE If the gap is correct:
- Replace the wraparound.
1. Disconnect power supply lines to machine before
performing periodic maintenance. 8. Inspect gas hose and inlet fitting for cracks or leaks.
2. Periodically clean the inside of the machine with a
9. Replace any unreadable labels or decals.
low pressure air system. Be sure to clean the
following components thoroughly.
10. Verify that the machine and welding circuit is properly
grounded.
� Main Transformer
� Electrode/Gas Output Receptacle
FIGURE C.1 SPARK GAP
� Polarity Switch
� Rectifier Assembly
� Arc Starter/Spark Gap Assembly
� PC Boards .015 Spark Gap
� Fan Blades
3. Inspect welder output and control cables for
fraying, cuts, and bare spots.
4. Keep TIG torch and cables in good condition.
5. Clean air louvers to ensure proper air flow and RIGHT SIDE OF MACHINE
cooling. FAN MOTOR OR FAN BLADE REPLACEMENT
When installing a new fan blade or fan motor be sure
6. The fan motor has sealed ball bearings which
to maintain proper shaft spacing per Figure C.2 below.
require no maintenance.
7. SPARK GAP ADJUSTMENT
The spark gap is set at the factory to a gap of
0.015 inches (0.4mm) See Figure C.1. This setting
is adequate for most applications. Where less high
frequency is desired, the setting can be reduced to
0.008 inches (0.2mm).
.30
Figure C.2
SQUARE WAVE TIG 175 PRO
E-1 E-1
TROUBLESHOOTING
HOW TO USE TROUBLESHOOTING GUIDE
WARNING
Service and Repair should only be performed by Lincoln Electric Factory Trained Personnel.
Unauthorized repairs performed on this equipment may result in danger to the technician and machine
operator and will invalidate your factory warranty. For your safety and to avoid Electrical Shock, please
observe all safety notes and precautions detailed throughout this manual.
__________________________________________________________________________
This Troubleshooting Guide is provided to help you This column provides a course of action for the
locate and repair possible machine malfunctions. Possible Cause, generally it states to contact your
Simply follow the three-step procedure listed below. local Lincoln Authorized Field Service Facility.
Step 1. LOCATE PROBLEM (SYMPTOM). If you do not understand or are unable to perform the
Look under the column labeled “PROBLEM (SYMP- Recommended Course of Action safely, contact your
TOMS)�. This column describes possible symptoms local Lincoln Authorized Field Service Facility.
that the machine may exhibit. Find the listing that best
describes the symptom that the machine is exhibiting.
Step 2. POSSIBLE CAUSE.
The second column labeled “POSSIBLE CAUSE� lists
the obvious external possibilities that may contribute to
the machine symptom.
Step 3. RECOMMENDED COURSE OF ACTION
CAUTION
DO NOT use a volt-ohm meter to measure output voltages in TIG mode. The
High Frequency Arc Starter voltage can damage the meter.
CAUTION
If for any reason you do not understand the test procedures or are unable to perform the tests/repairs safely, contact your Local
Lincoln Authorized Field Service Facility for technical troubleshooting assistance before you proceed.
E-2 E-2
TROUBLESHOOTING
Observe all Safety Guidelines detailed throughout this manual
PROBLEMS POSSIBLE AREAS OF RECOMMENDED
(SYMPTOMS) MISADJUSTMENTS COURSE OF ACTION
OUTPUT PROBLEMS
Machine is Dead - 1. Make certain that the input
No Output - No Fan power switch is in the “ON�
position and machine is plugged in.
2. Check the input voltage at the
machine. Input voltage must
match the rating plate and voltage
connection. Refer to Reconnect
Procedure in the Installation sec-
tion of this manual.
3. Blown or missing fuses in
input line.
Fan runs - No output from machine 1. Check for proper input voltages
in either Stick or TIG modes. per nameplate and voltage
reconnection.
Contact your Local Lincoln Authorized
Field Service Facility for technical
2. Check to make sure polarity
troubleshooting assistance.
switch is not in between two
positions.
Fan runs - No output from machine 1. Welding application may have
in either Stick or TIG modes and the exceed the recommended duty
yellow light on the control panel is cycle. Allow the unit to run until
on. the fan cools the unit and the
yellow light goes out.
Machine does not respond (no gas 1. Machine MUST be in
flow, no high frequency and no open the TIG Mode.
circuit voltage) when arc start switch
or Amptrol is activated - fan is work- 2. The Amptrol may be defective.
ing. Check for continuity between
pins “D� and “E� on cable con-
nector when Amptrol is
depressed.
CAUTION
If for any reason you do not understand the test procedures or are unable to perform the tests/repairs safely, contact your Local
Lincoln Authorized Field Service Facility for technical troubleshooting assistance before you proceed.
SQUARE WAVE TIG 175 PRO
E-3 E-3
TROUBLESHOOTING
Observe all Safety Guidelines detailed throughout this manual
PROBLEMS POSSIBLE AREAS OF RECOMMENDED
(SYMPTOMS) MISADJUSTMENTS COURSE OF ACTION
OUTPUT PROBLEMS
Machine regularly over heats - ther- 1. Welding application may
mostat opens, Yellow light on front exceed recommended duty
panel glows. The fan runs but cycle. Reduce the duty cycle.
machine has no output.
2. Dirt and dust may have
clogged the cooling channels
Contact your Local Lincoln Authorized
inside the machine. Blow out
Field Service Facility for technical
unit with clean, dry
troubleshooting assistance.
low pressure air.
3. Air intake and exhaust louvers
may be blocked due to
inadequate clearance around
machine.
CAUTION
If for any reason you do not understand the test procedures or are unable to perform the tests/repairs safely, contact your Local
Lincoln Authorized Field Service Facility for technical troubleshooting assistance before you proceed.
SQUARE WAVE TIG 175 PRO
E-4 E-4
TROUBLESHOOTING
Observe all Safety Guidelines detailed throughout this manual
PROBLEMS POSSIBLE AREAS OF RECOMMENDED
(SYMPTOMS) MISADJUSTMENTS COURSE OF ACTION
TIG MODE PROBLEMS
Machine output is intermittently lost. 1. Problem may be caused by high
Gas flow and high frequency are frequency interference. Make
also interrupted. sure that the machine is ground-
ed properly according to the
installation instructions. If there
are other high frequency
sources in the area, make cer-
tain that they are grounded
properly.
2. Check Amptrol for proper opera-
tion and loose connections.
3. Check for proper input voltage
and proper voltage reconnec-
tion.
Arc “Flutters� when TIG welding. 1. Tungsten electrode may be too
large in diameter for the current
setting.
2. Tungsten not “sharp� when
Contact your Local Lincoln Authorized
welding in DC - mode.
Field Service Facility for technical
3. Gas shielding may be insuffi- troubleshooting assistance.
cient. Increase gas flow; reduce
tungsten stickout beyond gas
cup.
4. Check for contaminated gas or
leaks in the gas line, torch, or
connections
5. If a helium blend is used as a
shielding gas, then reduce the
percentage of helium.
1. Micro Switch mounted on
Arc “Pulsates� when AC TIG
Polarity Switch is not opening in
welding.
“AC� mode.
CAUTION
If for any reason you do not understand the test procedures or are unable to perform the tests/repairs safely, contact your Local
Lincoln Authorized Field Service Facility for technical troubleshooting assistance before you proceed.
SQUARE WAVE TIG 175 PRO
APR96
E-5 E-5
TROUBLESHOOTING
Observe all Safety Guidelines detailed throughout this manual
PROBLEMS POSSIBLE AREAS OF RECOMMENDED
(SYMPTOMS) MISADJUSTMENTS COURSE OF ACTION
TIG WELDING PROBLEMS
Black areas along weld bead. 1. Clean any oily or organic conta-
mination from the work piece.
2. Tungsten electrode may be cont-
aminated. Replace or sharpen.
3. Check for contaminated gas or
leaks in the gas line, torch, or
connections
4. Gas shielding may be insuffi-
cient. Increase gas flow; reduce
tungsten stickout beyond gas
cup.
Weak high frequency - machine has 1. Check for poor connections in
the welding circuit.
normal welding output.
2. Gas shielding may be insuffi-
cient. Increase gas flow; reduce
tungsten stickout beyond gas
cup.
3. Check for work and electrode Contact your Local Lincoln Authorized
cables in poor condition allowing
Field Service Facility for technical
high frequency to “Leak Off�.
troubleshooting assistance.
4. Keep cables as short as possible.
5. Check Spark Gap operation and
setting (0.015�)
High frequency “spark� is present at 1. The tungsten electrode may be
contaminated. Replace or sharp-
tungsten electrode, but operator is
en.
unable to establish a welding arc.
Machine has normal open circuit 2. The current control may be set
too low.
voltage (refer to Technical
Specifications in the Installation
3. The tungsten electrode may be
Chapter). too large for the process.
4. If a helium blend is used as a
shielding gas, then reduce the
percentage of helium.
CAUTION
If for any reason you do not understand the test procedures or are unable to perform the tests/repairs safely, contact your Local
Lincoln Authorized Field Service Facility for technical troubleshooting assistance before you proceed.
SQUARE WAVE TIG 175 PRO
E-6 E-6
TROUBLESHOOTING
Observe all Safety Guidelines detailed throughout this manual
PROBLEMS POSSIBLE AREAS OF RECOMMENDED
(SYMPTOMS) MISADJUSTMENTS COURSE OF ACTION
TIG WELDING PROBLEMS
No high frequency. Machine is in 1. If the machine location is in a
the TIG Mode and has normal out- highly dirty environment with
put. conductive contaminants, check
and clean the spark gap with a
low pressure air stream per the
maintenance instructions.
No gas flow when Amptrol is activat- 1. Gas supply is empty or not
ed in the TIG Mode. Machine has turned on.
output - fan runs. A “Click� can be
heard indicating that the gas sole- 2. Flow regulator may be set too
noid valve is operating. low.
3. Gas hose may be pinched.
4. Gas flow may be blocked with
dirt. Check filter screen inside
gas inlet fitting to solenoid valve.
Use filters to prevent reoccur-
rence.
Contact your Local Lincoln Authorized
Field Service Facility for technical
5. Consult your local welder/gas
troubleshooting assistance.
distributor.
When AC TIG welding, the arc is 1. Tungsten electrode may be too
erratic and there is a loss of “clean- small for process. Use a larger
ing� of the work piece. diameter tungsten or a pure
tungsten.
2. If a helium blend is used as a
shielding gas, then reduce the
percentage of helium.
The end of the tungsten electrode 1. The welding current is too high
melts away. for the electrode type and/or
size. See the Table B.1 in the
Operation Section of this manu-
al.
CAUTION
If for any reason you do not understand the test procedures or are unable to perform the tests/repairs safely, contact your Local
Lincoln Authorized Field Service Facility for technical troubleshooting assistance before you proceed.
SQUARE WAVE TIG 175 PRO
E-7 E-7
TROUBLESHOOTING
Observe all Safety Guidelines detailed throughout this manual
PROBLEMS POSSIBLE AREAS OF RECOMMENDED
(SYMPTOMS) MISADJUSTMENTS COURSE OF ACTION
STICK WELDING PROBLEMS
Stick electrode “Blasts Off� when arc 1. Weld current may be set too
is struck. high for electrode size. Reduce
current control setting, or use a
larger diameter electrode.
Stick electrode “sticks� in the weld 1. The weld current may be set too Contact your Local Lincoln Authorized
puddle. low. Increase the current control Field Service Facility for technical
setting or use a smaller diame- troubleshooting assistance.
ter electrode.
CAUTION
If for any reason you do not understand the test procedures or are unable to perform the tests/repairs safely, contact your Local
Lincoln Authorized Field Service Facility for technical troubleshooting assistance before you proceed.
SQUARE WAVE TIG 175 PRO
WIRING DIAGRAM - SQUARE WAVE TIG 175 PRO (208/ 230/ 1/ 60)
F-1
H3 (230V)
VOLTAGE RECONNECTION
H2 (208V)
230 VOLT CONNECTION (AS SHOWN)
H2
H1
H1 and H3 TO POWER SWITCH. H1
H3
209 W X3
H2 NOT CONNECTED; INSULATE. T1
S
18VAC
208 VOLT CONNECTION
F
210 B X4
H1 and H2 TO POWER SWITCH.
W 221 X1
201 W X5 S
H3 NOT CONNECTED: INSULATE. C1 C2 R 222
18VAC 78VAC
C1 AND C2 MUST ALWAYS BE
F
204 W X6
POWER X2
CONNECTED ACROSS POWER SWITCH.
SWITCH
(-)
230 B X7
220
115VAC
115VAC
FAN
B X8
SCR1
L1 232
L2
G1
INPUT PLUG
X2
217
SCR2
L1
G2
POLARITY SWITCH MICRO SWITCH
TO GROUND PER
218 AC A-C, D-E, B-F OPEN
NATIONAL ELECTRICAL CODE DC+ B-D, C-E, A-F, G-H CLOSED
SCR HEATSINK
DC- B-D, A-E, C-F, G-H CLOSED
(+)
FRONT GANG
THERMOSTAT
MICRO-SWITCH
REAR GANG
D
S2A NO
G3
H
L2 E NC
A
SCR3
TOROID
G
F
CHOKE
216 C
THERMOSTAT
311
312
G4 POS
POWER "ON" LIGHT B X1
314 SCR4
G4
216
220
G3
G2
218
G1
217
R 222 (-)
W 221 (+)
313
231 W
S2
(-)
PL1
233
POLARITY
(REAR VIEW,
D1 SWITCH
CURRENT CONTROL
SHOWN IN AC POSITION)
J1 J2
J3 R1
R2
277
312
B
B
276
244
311 275 C1,C2 BY-PASS CAPACITORS
242 C3 HIGH VOLTAGE CAPACITOR, .0015/12kV
J4 STICK C4 PHASE SHIFT CAPACITOR 15uF/250VAC
BYPASS/
241 D1 FREE WHEELING DIODE
S3 STABILIZER
233 L1 OUTPUT INDUCTOR (CHOKE)
PC BOARD
243
MODE SWITCH
275 L2 HI-FREQ PROTECTION CHOKE (TOROID)
( STICK - CLOSED
231 L3,L4 HI-FREQ INDUCTORS
TIG - OPEN )
276 PL1 POWER "ON" LIGHT, 115VAC
244
243 R1 CURRENT CONTROL POTENTIOMETER 10K
SQUARE WAVE TIG 175 PRO
277
WIRING DIAGRAM
R2 HOLDING RESISTOR 50/100
TIG
R3 PHASE SHIFT RESISTOR 200/100
THERMAL LIGHT S2A MICROSWITCH ON POLARITY SWITCH
S SCR1,2,3,4 MAIN SCRs
L3
SV1 GAS SOLENOID, 115VAC
241 C3
Y
SPARK
- T1 MAIN TRANSFORMER
+
CONTROL PC BOARD
115VAC T3 T4
GAP
TL1 T3 HIGH VOLTAGE TRANSFORMER
242
T4 HI-FREQ TRANSFORMER
TL1 THERMAL LIGHT, LED
F
J6 E L4 LEAD COLORING CODE:
A A COMPONENT VALUE
D
UNITS:
B B 237
J5 F B-BLACK U-BLUE
ARC STARTER AS’BLY RESISTORS:
C C C G-GREEN W-WHITE OHMS/WATTS
A Y-YELLOW
O-ORANGE
D D CAPACITORS:
R3 C4
B R-RED MFD/VOLTS
10K A-B
E E
AT MINIMUM
F F
236B
236
201
204
235
234
238
232
230
210
209
ELECTRODE WORK
CONNECTOR PIN NUMBERS:
REMOTE REMOTE TIG 236A
TM OR
RECEPTACLE AMPTROL PULSER
EXAMPLE: THIS IS PIN 7
GAS VALVE
0F CONNECTOR J4
123 7
238
236 236A
SV1
14
8
J4
234 LATCH
VIEW OF CONNECTOR ON PC BOARD
235
ELECTRICAL SYMBOLS PER E1537.
1-00
L10060-1
NOTE: This diagram is for reference only. It may not be accurate for all machines covered by this manual. The specific diagram for a particular code is pasted
inside the machine on one of the enclosure panels. If the diagram is illegible, write to the Service Department for a replacement. Give the equipment code number..
F-1
F-2
WIRING DIAGRAM - SQUARE WAVE TIG 175 PRO (460/575/1/60)
H3 (575V)
VOLTAGE RECONNECTION
H2 (460V)
575 VOLT CONNECTION (AS SHOWN)
H2
H1
H1 and H3 TO POWER SWITCH. H1
H3
W X3
209
H2 NOT CONNECTED; INSULATE. T1
S
18VAC
460 VOLT CONNECTION
F
210 B X4
H1 and H2 TO POWER SWITCH.
W 221 X1
201 W X5 S
H3 NOT CONNECTED: INSULATE. C1 C2 R 222
18VAC 78VAC
C1 AND C2 MUST ALWAYS BE
F
204 W X6
POWER X2
CONNECTED ACROSS POWER SWITCH.
SWITCH
(-)
230 B X7
220
115VAC
115VAC
FAN
B X8
232
SCR1
L1
L2
G1
X2
CONNECT GREEN LEAD TO GROUND 217
PER NATIONAL ELECTRIC CODE. CONNECT {
SCR2
BLACK AND WHITE LEADS TO SUPPLY
L1
G2
CIRCUIT.
POLARITY SWITCH MICRO SWITCH
218 AC A-C, D-E, B-F OPEN
DC+ B-D, C-E, A-F, G-H CLOSED
SCR HEATSINK
DC- B-D, A-E, C-F, G-H CLOSED
(+)
FRONT GANG
THERMOSTAT
MICRO-SWITCH
REAR GANG
D
S2A NO
G3
H
L2 E NC
A
SCR3
TOROID
G
F
CHOKE
216 C
THERMOSTAT
311
312
G4 POS
POWER "ON" LIGHT B X1
314 SCR4
G4
216
220
G3
G2
218
G1
217
R 222 (-)
W 221 (+)
313
231 W
S2
(-)
PL1
233
POLARITY
(REAR VIEW,
D1 SWITCH
CURRENT CONTROL
SHOWN IN AC POSITION)
J1 J2
J3 R1
R2
277
312
B
B
276
244
311 275 C1,C2 BY-PASS CAPACITORS
242 C3 HIGH VOLTAGE CAPACITOR, .0015/12kV
J4 STICK C4 PHASE SHIFT CAPACITOR 15uF/250VAC
BYPASS/
241 D1 FREE WHEELING DIODE
S3 STABILIZER
233 L1 OUTPUT INDUCTOR (CHOKE)
PC BOARD
243
MODE SWITCH
275 L2 HI-FREQ PROTECTION CHOKE (TOROID)
( STICK - CLOSED
231 L3,L4 HI-FREQ INDUCTORS
TIG - OPEN )
276 PL1 POWER "ON" LIGHT, 115VAC
244
243 R1 CURRENT CONTROL POTENTIOMETER 10K
277 R2 HOLDING RESISTOR 50/100
TIG
SQUARE WAVE TIG 175 PRO
R3 PHASE SHIFT RESISTOR 200/100
WIRING DIAGRAM
THERMAL LIGHT S2A MICROSWITCH ON POLARITY SWITCH
S SCR1,2,3,4 MAIN SCRs
L3
SV1 GAS SOLENOID, 115VAC
241 C3
Y
SPARK
- T1 MAIN TRANSFORMER
+
CONTROL PC BOARD
115VAC T3 T4
GAP
TL1 T3 HIGH VOLTAGE TRANSFORMER
242
T4 HI-FREQ TRANSFORMER
TL1 THERMAL LIGHT, LED
F
J6 E L4 LEAD COLORING CODE:
A A COMPONENT VALUE
D
UNITS:
B B 237
J5 F B-BLACK U-BLUE
ARC STARTER AS’BLY RESISTORS:
C C C G-GREEN W-WHITE OHMS/WATTS
A O-ORANGE Y-YELLOW
D D CAPACITORS:
R3 C4
B R-RED MFD/VOLTS
10K A-B
E E
AT MINIMUM
F F
236B
236
201
204
235
234
238
232
230
210
209
ELECTRODE WORK
CONNECTOR PIN NUMBERS:
TIG
REMOTE REMOTE
236A
TM OR
PULSER EXAMPLE: THIS IS PIN 7
RECEPTACLE AMPTROL
GAS VALVE
0F CONNECTOR J4
123 7
238
N.A. CONNECT GREEN/YELLOW LEAD TO GROUND
236 236A
SV1 PER NATIONAL ELECTRIC CODE. CONNECT
14
8
BLACK AND WHITE LEADS TO SUPPLY
J4
LATCH
234 CIRCUIT.
VIEW OF CONNECTOR ON PC BOARD
235
ELECTRICAL SYMBOLS PER E1537.
1-00
L10569-1
NOTE: This diagram is for reference only. It may not be accurate for all machines covered by this manual. The specific diagram for a particular code is pasted
inside the machine on one of the enclosure panels. If the diagram is illegible, write to the Service Department for a replacement. Give the equipment code number..
F-2
NOTES
SQUARE WAVE TIG 175 PRO
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The Procedure Handbook of Arc Welding Lessons, simply written, cover manipulatory techniques;
With over 500,000 copies of previous editions published machine and electrode characteristics; related subjects, such
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G Do not touch electrically live parts or G Keep flammable materials away. G Wear eye, ear and body protection.
WARNING electrode with skin or wet clothing.
G Insulate yourself from work and
ground.
Spanish
G No toque las partes o los electrodos G Mantenga el material combustible G Protéjase los ojos, los oÃdos y el
AVISO DE bajo carga con la piel o ropa moja- fuera del área de trabajo. cuerpo.
da.
PRECAUCION G Aislese del trabajo y de la tierra.
French G Ne laissez ni la peau ni des vête- G Gardez à l’écart de tout matériel G Protégez vos yeux, vos oreilles et
ments mouillés entrer en contact inflammable. votre corps.
ATTENTION avec des pièces sous tension.
G Isolez-vous du travail et de la terre.
G Berühren Sie keine stromführenden
German G Entfernen Sie brennbarres Material! G Tragen Sie Augen-, Ohren- und Kör-
Teile oder Elektroden mit Ihrem perschutz!
WARNUNG Körper oder feuchter Kleidung!
G Isolieren Sie sich von den
Elektroden und dem Erdboden!
Portuguese
G Não toque partes elétricas e elec- G Mantenha inflamáveis bem guarda- G Use proteção para a vista, ouvido e
trodos com a pele ou roupa molha- dos. corpo.
ATENÇÃO da.
G Isole-se da peça e terra.
Japanese
Chinese
Korean
Arabic
READ AND UNDERSTAND THE MANUFACTURER’S INSTRUCTION FOR THIS EQUIPMENT AND THE CONSUMABLES TO
BE USED AND FOLLOW YOUR EMPLOYER’S SAFETY PRACTICES.
SE RECOMIENDA LEER Y ENTENDER LAS INSTRUCCIONES DEL FABRICANTE PARA EL USO DE ESTE EQUIPO Y LOS
CONSUMIBLES QUE VA A UTILIZAR, SIGA LAS MEDIDAS DE SEGURIDAD DE SU SUPERVISOR.
LISEZ ET COMPRENEZ LES INSTRUCTIONS DU FABRICANT EN CE QUI REGARDE CET EQUIPMENT ET LES PRODUITS A
ETRE EMPLOYES ET SUIVEZ LES PROCEDURES DE SECURITE DE VOTRE EMPLOYEUR.
LESEN SIE UND BEFOLGEN SIE DIE BETRIEBSANLEITUNG DER ANLAGE UND DEN ELEKTRODENEINSATZ DES HER-
STELLERS. DIE UNFALLVERHÃœTUNGSVORSCHRIFTEN DES ARBEITGEBERS SIND EBENFALLS ZU BEACHTEN.
G Keep your head out of fumes. G Turn power off before servicing. G Do not operate with panel open or
G Use ventilation or exhaust to
WARNING
guards off.
remove fumes from breathing zone.
Spanish
G Los humos fuera de la zona de res- G Desconectar el cable de ali- G No operar con panel abierto o
AVISO DE
piración. mentación de poder de la máquina guardas quitadas.
G Mantenga la cabeza fuera de los antes de iniciar cualquier servicio.
PRECAUCION
humos. Utilice ventilación o
aspiración para gases.
French
G Débranchez le courant avant l’entre- G N’opérez pas avec les panneaux
G Gardez la tête à l’écart des fumées.
G Utilisez un ventilateur ou un aspira- tien. ouverts ou avec les dispositifs de
ATTENTION
protection enlevés.
teur pour ôter les fumées des zones
de travail.
German
G Strom vor Wartungsarbeiten G Anlage nie ohne Schutzgehäuse
G Vermeiden Sie das Einatmen von
abschalten! (Netzstrom völlig öff- oder Innenschutzverkleidung in
Schweibrauch!
WARNUNG
G Sorgen Sie für gute Be- und nen; Maschine anhalten!) Betrieb setzen!
Entlüftung des Arbeitsplatzes!
Portuguese
G Não opere com as tampas removidas. G Mantenha-se afastado das partes
G Mantenha seu rosto da fumaça.
G Desligue a corrente antes de fazer
G Use ventilação e exhaustão para moventes.
ATENÇÃO
serviço. G Não opere com os paineis abertos
remover fumo da zona respiratória.
G Não toque as partes elétricas nuas. ou guardas removidas.
Japanese
Chinese
Korean
Arabic
LEIA E COMPREENDA AS INSTRUÇÕES DO FABRICANTE PARA ESTE EQUIPAMENTO E AS PARTES DE USO, E SIGA AS
PRÃTICAS DE SEGURANÇA DO EMPREGADOR.
� World's Leader in Welding and Cutting Products �
� Sales and Service through Subsidiaries and Distributors Worldwide �
Cleveland, Ohio 44117-1199 U.S.A. TEL: 216.481.8100 FAX: 216.486.1751 WEB SITE: www.lincolnelectric.com
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