WELDTECH WT140ARC User manual

OPERATING INSTRUCTIONS
WT140ARC
140A INVERTER ARC WELDER
www.weldtech.net.nz

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Congratulations on your new Weldtech product!
The Weldtech range from Euroquip uses latest technology design and engineering
to produce welding products that combine market leading value and features with
durability. Designed for discerning operators who seek professional results and
product quality without the price tag of a full professional setup. Design emphasis
is placed on simple, functional design and operation. Weldtech product is subject
to stringent quality control and designed and manufactured to NZ & Australian
standards.
Common use of Weldtech products include:
 • LightEngineering
 • Automotive
 • Home/hobbyEngineering
 • Farming
 • Maintenance&Repairs
Forindustrialweldingsolutions,checkouttheStratarangefromEuroquip:
www.strata.co.nz
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to a wide range of industries across New Zealand and Australia. Key product
categories are; welding equipment, air compressors, power generators and
cleaning equipment.
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not registered with Euroquip are supported by a base 12 month warranty only.
Sparepartsandtechnicalsupportwillnotbeavailableforanunregisteredproduct
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your product, please register it online at www.euroquip.co.nz. To request a physical
registration form, please contact Euroquip customer service on 0800 387 678.
We Appreciate Your Business!

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WT140ARC Welding Machine
www.weldtech.net.nz
Contents
Welcome to Euroquip..........................................2
KnowYourMachine..............................................5
QuickStartGuide....................................................6
Tips & Tricks.................................................................6
Accessories..................................................................6
Care&Maintenance..............................................6
MMA(Stick)BasicWeldingGuide..................7
Troubleshooting....................................................13
Knowledge&Resources....................................14
Safety.........................................................................14
Warranty....................................................................19

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Optional accessories to help you get the job done!
Cutting edge electronics help you weld like a pro
on home, workshop and on-site projects
Chipping Hammer
(#SPCH)
Welding Gloves
(#AWG02)
2 Sensor
Auto Helmet
(#DW2500)
Flip Front Helmet
(#AFF1000)
4 Sensor
Auto Helmet
with grind function
(#DW3000)
Welding Magnet
(#WMG05)
Powerful - 140A welding power up to 8mm steel thickness
Portable - Only 3.6kg super light weight and portable
Reliable - Cutting edge inverter technology ensures ultimate reliabilty
• Suitable for welding mild & high tensile steels
• Exceptionally smooth welding power
• Automatic ARC force and hot start for greater control and ease of use
• Electronically variable from 10 - 140A
• Extremely portable and convenient at only 3.6kg!
• High open circuit voltage
• Welds 1.6 - 3.2mm electrodes
• 60% Duty Cycle @100A
With 10A Plug - Ideal for home and workshop power supplies!
Dimensions: (L x W x H) 290 x 132 x 275mm
Weight: 3.6kg
Input Power: 230V, 10A
Max. Input Current: 21A
Generator Capacity: 5kVA
Output Power: 30 - 140A
Duty Cycle: 60% @ 100A
Electrode Size: 1.6 - 3.2mm
Output Socket: 16mm
WT140ARC
140A - INVERTER ARC WELDER

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WT140ARC Welding Machine
www.weldtech.net.nz
Know Your Machine
1. Overload indicator lamp*
2. Power indicator lamp
3. Current adjustment knob
4. Negative (-) welding power output
connection socket
5. Positive (+) welding power output
connection socket
1 2 3
4
5
* Overload indicator lamp -Lightswhendutycycle
is exceeded and thermal protection is activated.
When thermal protection is activated, welding out-
put will be disabled until machines cools suciently
and overload indicator lamp goes out. Also may
activate with inverter circuit failure issues.
6. 230V AC mains power input lead.
7. Mains power switch.
8. Cooling fan inlet.
67
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Quick Start Guide
Electrical Connection
TheWT140ARC is designed to operate on a stand-
ard 10A 230V AC power supply. If an extension cord
must be used, it should be no longer than 10m and
be a heavy duty version with a minimum cable core
of 2.0mm2. If an extension lead longer than 10m is
required, it is recommended to use a Euroquip indus-
trialduty15Aextensionlead,partnumber;#16895.
Operating Environment
Adequate ventilation is required to provide proper
coolingfortheWT140ARC.Ensurethatthemachine
is placed on a stable level surface where clean cool
aircaneasilyowthroughtheunit.TheWT140ARC
has electrical components and control circuit boards
which may be damaged by excessive dust and dirt,
so a clean operating environment is essential.
Basic Operation - ARC/ MMA
1.1 Connect the earth cable quick connector to the
negativeweldingpoweroutputsocket(4)Connect
the earth clamp to the work piece. Contact with
the work piece must be a rm contact, with clean
bare metal, with no corrosion, paint or scale at the
contact point.
1.2 Insert an electrode into the electrode holder and
connect the electrode holder and work lead to the
positiveweldingpoweroutputsocket(5).
NOTE: This polarity connection conguration is valid
for most GP (General Purpose) MMA electrodes. There
are variances to this. If in doubt, check the electrode
specications or consult the electrode manufacturer.
1.3 Connect the machine to suitable mains power
usingthemainsinputpowerlead(6).Switchthe
mainspowerswitch(7)to‘on’topowerupthe
machine.
1.4 Select the required output current using the
currentcontrolknob (3).Youarenowreadyto
weld!
Tips & Tricks
Duty Cycle Rating
Welding duty cycle is the percentage of actual weld-
ing time that can occur in a ten minute cycle. E.g.
15%at105amps-thismeanstheweldercanweldat
105ampsfor1.5minutesandthentheunitwillneed
toberestedfor8.5minutes.Alldutycycleratingsare
basedon an ambient air temperatureof 40°C with
50%humidity,whichistheinternationalstandardfor
such a rating.
In an environment with temperatures exceeding
40°C,thedutycyclewillbelessthanstated.Inam-
bienttemperaturelessthan40°C,dutycycleperfor-
mance will be higher.
Lift TIG Operation
The WT140ARC is not designed to be used for lift
TIGoperation,forliftTIG welding,theWT160MPor
WT200MPmodelsarerecommended.
Formoreusefultips&tricksonweldingorselecting
the right tool for the job, please visit www.euroquip.
co.nz
Accessories
Refer to page 3 for related accessories for this
machine.
Care &
Maintenance
Keep your Welding Machine in Top
Condition
TheWT140ARC does not require any special main-
tenance, however the user should take care of the
machine as follows:
• Regularlycleantheventilationslots.
• Keepthecasingclean.
• Checkallcablesbeforeuse.

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WT140ARC Welding Machine
www.weldtech.net.nz
• Checkelectrodeholders,worklead/clampsand
welding torches before use.
• Replacewornelectrodeholdersandearth
clamps, which do not provide a good
connection.
• Replacewornconsumablepartsinatimely 
manner.
• Useasoftclothorbrushtocleanelectrical 
components.
• Donotuseliquidcleaningproducts,wateror
especially solvents.
• Donotusecompressedairtocleanelectrical
components as this can force dirt and dust
further into components, causing electrical short
circuits.
• Checkfordamagedparts.Donotusethewelder
with damaged parts.
If damaged, before further use, the welder must be
carefully checked by a qualied person to determine
that it will operate properly. Check for breakage of
parts, mountings and other conditions that may
aect its operation.
Have your welder repaired by an expert. An
authorised service centre should properly repair a
damaged part.
This appliance is manufactured in accordance with
relevant safety standards. Only experts must carry
out repairing of electrical appliances, otherwise
considerabledangerfortheusermayresult.Useonly
genuine replacement parts. Do not use modied or
non-genuine parts.
Storing the Welder
When not in use the welder should be stored in the
dry and frost-free environment.
WARNING! Before performing cleaning/main-
tenance, replacing cables / connections , make
sure the welding machine is switched o and dis-
connected from the power supply.
MMA (Stick) Basic
Welding Guide
Size of Electrodes
The electrode size is determined by the thickness of
metals being joined and can also be governed by
thetypeofweldingmachineavailable.Smallweld-
ingmachineswillonlyprovidecurrent(amperage)to
run smaller sized electrodes.
Forthinsections,itisnecessarytousesmallerelec-
trodes otherwise the arc may burn holes through the
job. A little practice will soon establish the most suit-
able electrode for a given application.
Storage of Electrodes
Always store electrodes in a dry place and in their
original containers.
Electrode Polarity
Electrodes are generally connected to the electrode
holder with the electrode holder connected positive
polarity.
The work lead is connected to the negative polarity
and is connected to the work piece. If in doubt con-
sult the electrode data sheet.
Eects of MMA(Stick) Welding
Various Materials
High Tensile and Alloy Steels
The two most prominent eects of welding these
steels are the formation of a hardened zone in the
weld area, and, if suitable precautions are not taken,
the occurrence in this zone of under-bead cracks.
Hardened zone and underbead cracks in the weld
area may be reduced by using the correct electrodes,
preheating, using higher current settings, using larg-
er electrodes sizes, short runs for larger electrode de-
posits or tempering in a furnace.
Manganese Steels
The eect on manganese steel of slow cooling from
high temperatures causes embrittlement. For this
reason it is absolutely essential to keep manganese
steelcool during welding by quenching after each
weld or skip welding to distribute the heat.

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Cast Iron
Mosttypesofcastiron,exceptwhiteiron,areweld-
able. White iron, because of its extreme brittleness,
generally cracks when attempts are made to weld it.
Trouble may also be experienced when welding
white-heart malleable, due to the porosity caused by
gas held in this type of iron.
Copper and Alloys
The most important factor is the high rate of heat
conductivity of copper, making pre-heating of heavy
sections necessary to give proper fusion of weld and
base metal.
Types of Electrodes
Arc Welding electrodes are classied into a number
of groups depending on their applications. There are
a great number of electrodes used for specialised in-
dustrial purposes which are not of particular interest
for everyday general work. These include some low
hydrogen types for high tensile steel, cellulose types
for welding large diameter pipes, etc. The range of
electrodes dealt with in this publication will cover
the vast majority of applications likely to be encoun-
tered; are all easy to use.
MILD STEEL :
E6011 - This electrode is used for all-position welding or
for welding on rusty, dirty, less-than- new metal. It has
a deep, penetrating arc and is often the rst choice for
repair or maintenance work.
E6013 - This all-position electrode is used for welding
clean, new sheet metal. Its soft arc has minimal spatter,
moderate penetration and an easy-to-clean slag.
E7014 - All positional, ease to use electrode for use on
thicker steel than E6013. Especially suitable for sheet metal
lap joints, llet welds and general purpose plate welding.
E7018 - A low-hydrogen, all-position electrode used when
quality is an issue or for hard-to-weld metals. It has the ca-
pability of producing more uniform weld metal, which has
better impact properties at low temperatures.
CAST IRON:
ENI-CL -Suitableforjoiningallcastironsexceptwhite
cast iron.
STAINLESS STEEL:
E318L-16 -Highcorrosionresistances.Idealfordairy
work etc.
Electrodes for joining dierent metals:
Flat Position,
Down Hand Butt Weld
(Fig 1-11)
Flat Position,
Gravity Fillet Weld
(Fig 1-12)
Horizontal Position,
Butt Weld
(Fig 1-13)
Horizontal-Vertical
(HV) Position
(Fig 1-14)
Vertical Position,
Butt Weld
(Fig 1-15)
Vertical Position,
Fillet Weld
(Fig 1-16)
Overhead Position,
Butt Weld
(Fig 1-17)
Overhead Position,
Fillet Weld
(Fig 1-18)

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WT140ARC Welding Machine
www.weldtech.net.nz
Joint Preparations
In many cases, it will be possible to weld steel sec-
tions without any special preparation. For heavier
sections and for repair work on castings, etc., it will
be necessary to cut or grind an angle between the
pieces being joined to ensure proper penetration of
the weld metal and to produce sound joints.
In general, surfaces being welded should be clean
andfreeofrust,scale,dirt,grease,etc.Slagshouldbe
removed from oxy-cut surfaces. Typical joint designs
areshowninFigure1-19.
Open Square Butt Joint
(Fig 1-19a)
Gapvariesfrom1.6mm(1/16”)
to4.8mm(3/16”)dependingonplatethickness
Single Vee Butt Joint
(Fig 1-19b) Notlessthan45°
Single Vee Butt Joint
(Fig 1-19c) Notlessthan70°
1.6mm(1/16”)max.
1.6mm(1/16”)
Double Vee Butt Joint
(Fig 1-19d) Notlessthan70°
1.6mm(1/16”)max.
1.6mm(1/16”)
Lap Joint (Fig 1-19e)
Fillet Joint (Fig 1-19f)
Corner Weld
(Fig 1-19g)
Tee Joints
(Fig 1-19h)
Edge Joint
(Fig 1-19i)
Plug Welds
(Fig 1-19j)

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Arc Welding Techniques
- A Word for Beginners
Forthose whohavenotyetdone anywelding,the
simplest way to commence is to run beads on a piece
ofscrapplate.Usemildsteelplateabout6.0mmthick
and a 3.2mm electrode.
Clean any paint, loose scale or grease o the plate and
set it rmly on the work bench so that welding can
becarriedoutinthedownhandposition.Makesure
thattheWorkLead/Clampismakinggoodelectrical
contact with the work, either directly or through the
work table. For light gauge material, always clamp
the work lead directly to the job, otherwise a poor
circuit will probably result.
The Welder
Place yourself in a comfortable position before be-
ginning to weld. Get a seat of suitable height and
do as much work as possible sitting down. Don’t
hold your body tense. A taut attitude of mind and
a tensed body will soon make you feel tired. Relax
and you will nd that the job becomes much easier.
You can add much to your peace of mind by wearing
a leather apron and gauntlets. You won’t be worry-
ing then about being burnt or sparks setting alight
to your clothes.
Place the work so that the direction of welding is
across, rather than to or from, your body. The elec-
trode holder lead should be clear of any obstruction
so that you can move your arm freely along as the
electrode burns down. If the lead is slung over your
shoulder, it allows greater freedom of movement
andtakesalotofweightoyourhand.Besurethe
insulation on your cable and electrode holder is not
faulty; otherwise you are risking an electric shock.
Striking the Arc
Practice this on a piece of scrap plate before going
on to more exacting work. You may at rst experi-
ence diculty due to the tip of the electrode “stick-
ing”totheworkpiece.Thisiscausedbymakingtoo
heavy a contact with the work and failing to with-
draw the electrode quickly enough. A low amper-
age will accentuate it. This freezing-on of the tip may
be overcome by scratching the electrode along the
plate surface in the same way as a match is struck. As
soon as the arc is established, maintain a 1.6mm to
3.2mm gap between the burning electrode end and
the parent metal. Draw the electrode slowly along
as it melts down.
Another diculty you may meet is the tendency, af-
ter the arc is struck, to withdraw the electrode so far
that the arc is broken again. A little practice will soon
remedy both of these faults.
20o
1.6mm(1/16”)
Striking an Arc
(Fig 1-20)
Arc Length
The securing of an arc length necessary to produce a
neat weld soon becomes almost automatic. You will
nd that a long arc produces more heat.
A very long arc produces a crackling or spluttering
noise and the weld metal comes across in large, ir-
regular blobs. The weld bead is attened and spatter
increases. A short arc is essential if a high quality weld
is to be obtained although if it is too short there is the
danger of it being blanketed by slag and the elec-
trode tip being solidied in. If this should happen,
give the electrode a quick twist back over the weld
todetachit.Contactor“touch-weld”electrodessuch
asE7014Stickelectrodesdonotstickinthisway,and
make welding much easier.
Rate of Travel
After the arc is struck, your next concern is to main-
tain it, and this requires moving the electrode tip
towards the molten pool at the same rate as it is
melting away. At the same time, the electrode has to
move along the plate to form a bead.
The electrode is directed at the weld pool at about
20º from the vertical. The rate of travel has to be ad-
justed so that a well-formed bead is produced.
If the travel is too fast, the bead will be narrow and
strung out and may even be broken up into individ-
ual globules. If the travel is too slow, the weld metal
piles up and the bead will be too large.

11
WT140ARC Welding Machine
www.weldtech.net.nz
Making Welded Joints
Havingattainedsomeskillinthehandlingofanelec-
trode, you will be ready to go on to make up welded
joints.
A. Butt Welds
Setuptwoplateswiththeiredgesparallel,asshown
in Figure 1-21, allowing 1.6mm to 2.4mm gap be-
tween them and tack weld at both ends. This is to
prevent contraction stresses from the cooling weld
metal pulling the plates out of alignment.
Plates thicker than 6.0mm should have their mating
edges bevelled to form a 70º to 90º included angle.
This allows full penetration of the weld metal to the
root. Using a 3.2mm E7014 Stick electrode at 100
amps, deposit a run of weld metal on the bottom of
the joint.
Do not weave the electrode, but maintain a steady
rate of travel along the joint sucient to produce a
well-formed bead. At rst you may notice a tendency
for undercut to form, but keeping the arc length
short, the angle of the electrode at about 20º from
vertical, and the rate of travel not too fast, will help
eliminate this.
The electrode needs to be moved along fast enough
to prevent the slag pool from getting ahead of the
arc. To complete the joint in thin plate, turn the job
over, clean the slag out of the back and deposit a
similar weld.
Tack Weld
Butt Weld
(Fig 1-21)
Electrode
20o- 30o
Tack Weld
Weld Build Up Sequence
(Fig 1-22)
Heavyplatewillrequireseveralrunstocompletethe
joint. After completing the rst run, chip the slag out
and clean the weld with a wire brush. It is important
to do this to prevent slag being trapped by the sec-
ondrun.Subsequentrunsarethendepositedusing
either a weave technique or single beads laid down
inthesequenceshowninFigure1-22.Thewidthof
weave should not be more than three times the core
wire diameter of the electrode.
When the joint is completely lled, the back is either
machined, ground or gouged out to remove slag
which may be trapped in the root, and to prepare
a suitable joint for depositing the backing run. If a
backing bar is used, it is not usually necessary to
remove this, since it serves a similar purpose to the
backing run in securing proper fusion at the root of
the weld.
B. Fillet Welds
These are welds of approximately triangular cross-
section made by depositing metal in the corner of
two faces meeting at right angles. Refer to Figure
1-14,1-23and1-24.
A piece of angle iron is a suitable specimen with
which to begin, or two lengths of strip steel may
be tacked together at right angles. Using a 3.2mm
E7014 Stick electrode at 100 amps, position angle
iron with one leg horizontal and the other vertical.
Thisisknownasahorizontal-vertical(HV)llet.
Strikethearcandimmediatelybringtheelectrodeto
a position perpendicular to the line of the llet and
about45ºfromthevertical.Someelectrodesrequire
being sloped about 20º away from the perpendicular
position to prevent slag from running ahead of the
weld.RefertoFigure1-23.
Donotattempttobuildupmuchlargerthan6.4mm
width with a 3.2mm electrode, otherwise the weld
metal tends to sag towards the base, and undercut
formsontheverticalleg.Multi-runscanbemadeas
shown in Figure 1-24.Weaving in HV llet welds is
undesirable.
Electrode Position
for HV Fillet Weld
(Fig 1-23)
45ofrom
vertical
60o-70ofrom
line of weld

12
C. Vertical Welds
1. Vertical Up
Tack weld a three feet length of angle iron to your
work bench in an upright position. Use a 3.2mm
E7014 Stick electrode and set the current at 100
amps.Makeyourselfcomfortableonaseatinfrontof
the job and strike the arc in the corner of the llet. The
electrode needs to be about 10º from the horizontal to
enableagoodbeadtobedeposited.ReferFig.1-25.
Multi-Runs in HV Fillet Weld
(Fig 1-24)
Single Run Vertical Fillet Weld
(Fig 1-25)
Weaving motion for
second and subsequent
runs
Pause at edge
of weave
Multi Run Vertical Fillet Weld
(Fig 1-26)
Examples of Vertical Fillet Welds
(Fig 1-27)
Pause at edge of weave
allows weld metal to build
up and eliminates undercut
Note: Weld contour
when insucient pause
at edge of weave
CORRECT INCORRECT
2. Vertical Down
TheE7014Stickelectrodemakesweldinginthispo-
sitionparticularlyeasy.Usea3.2mmelectrodeat100
amps. The tip of the electrode is held in light contact
with the work and the speed of downward travel is
regulated so that the tip of the electrode just keeps
ahead of the slag. The electrode should point up-
wardsatanangleofabout45º.
3. Overhead Welds
Apart from the rather awkward position necessary,
overhead welding is not much more dicult that
down hand welding.
Setupaspecimenforoverheadweldingbyrsttack-
ing a length of angle iron at right angles to another
piece of angle iron or a length of waste pipe. Then
tack this to the work bench or hold in a vice so that
the specimen is positioned in the overhead position
as shown in the sketch.
The electrode is held at 45º to the horizontal and
tilted10ºinthelineoftravel(Figure1-28).Thetipof
the electrode may be touched lightly on the metal,
which helps to give a steady run. A weave technique
is not advisable for overhead llet welds.
Usea3.2mmE6013Stickelectrodeat100amps,and
deposit the rst run by simply drawing the electrode
along at a steady rate. You will notice that the weld
deposit is rather convex, due to the eect of gravity
before the metal freezes.
Tilted 10oin
line of travel
Overhead Fillet Weld
(Fig 1-28)
Angle tacked to pipe
45oto plate
Useashortarc,anddonotattempttoweaveonthe
rst run. When the rst run has been completed de-
slag the weld deposit and begin the second run at
the bottom. This time a slight weaving motion is nec-
essary to cover the rst run and obtain good fusion
at the edges.
At the completion of each side motion, pause for a
moment to allow weld metal to build up at the edg-
es, otherwise undercut will form and too much metal
will accumulate in the centre of the weld. Figure
1-26illustratesmulti-runtechniqueandFigure1-27
shows the eects of pausing at the edge of weave
and of weaving too rapidly.

13
WT140ARC Welding Machine
www.weldtech.net.nz
Troubleshooting

14
Knowledge &
Resources
Please refer to Euroquip website
www.euroquip.co.nz/ Downloads.html
for knowledgebase articles & operation videos.
Safety
Store and Retain this Manual
Retainthismanualforthesafetywarningsandpre-
cautions, assembly, operating, inspection, mainte-
nance and cleaning procedures. Write the product’s
serialnumberintotheNOTESsectionattherear,and
keep this manual and the receipt in a safe and dry
place for future reference.
Important Safety Information
Failuretofollowthewarningsandinstructionsmay
result in electric shock, re, serious injury and/or
death.Saveall warnings and instructions forfuture
reference.
This is the safety alert symbol to alert you to poten-
tial personal injury hazards. Obey all safety messages
that follow this symbol to avoid possible injury or
death.
DANGER! indicates a hazardous situation
which, if not avoided, will result in death or seri-
ous injury.
WARNING! indicates a hazardous situation
which, if not avoided, could result in death or se-
rious injury.
CAUTION, used with the safety alert symbol,
indicates a hazardous situation which, if not
avoided, could result in minor or moderate injury.
NOTE, used to address practices not related to personal
injury.
CAUTION, without the safety alert symbol, is used to
address practices not related to personal injury.
GENERAL SAFETY WARNINGS
1. Maintain labels and nameplates on the welder.
These carry important information. If unreadable or
missing, contact Euroquip for a replacement.
2. Avoid unintentional starting. Make sure the
welder is setup correctly and you are prepared to be-
gin work before turning on the welder.
3. Unplug before performing maintenance.
Always unplug the welder from its electrical outlet
before performing any inspection, maintenance, or
cleaning procedures.
4. Never leave the welder unattended while en-
ergised. Turn power o before leaving the welder
unattended.
5. Do not touch live electrical parts. Wear dry, in-
sulating gloves. Do not touch the electrode or the
conductor tong with bare hands. Do not wear wet or
damaged gloves.
6. Protect yourself from electric shock. Do not use
the welder outdoors. Insulate yourself from the work
pieceandtheground.Usenon-ammable,dryinsu-
lating material if possible, or use dry rubber mats, dry
wood or plywood, or other dry insulating material
large enough to cover the area of contact with the
work or the ground.
7. Avoid inhaling dust. Somedustcreatedbypower
sanding, sawing, grinding, drilling, cutting, welding
and other construction activities, contain chemicals
known to cause cancer, birth defects or other harm.
Your risk from these exposures varies, depending on
how often you do this type of work. To reduce your
exposure to these chemicals, work in a well-ventilat-
ed area, and work with approved safety equipment,
such as dust masks that are specially designed to l-
ter out microscopic particles.
8. People with pacemakers should consult their
physician(s) before using this machine.
WARNING!
Electromagnetic elds in close proximity to a
heart pacemaker could cause interference, or
failure of the pacemaker. The use of a Welder is
NOT RECOMMENDED for pacemaker wearers.
Consult your doctor.
9. Ensure that the unit is placed on a stable loca-
tion before use.
WARNING!
If this unit falls while plugged in, severe injury,
electric shock, or re may result.

15
WT140ARC Welding Machine
www.weldtech.net.nz
10. Transportation Methods Liftunitwiththehan-
dles provided, or use a handcart or similar device of
adequate capacity. If using a fork lift vehicle, secure
the unit to a skid before transporting.
CAUTION!
Disconnect input power conductors from de-
energized supply line before moving the welding
power source.
11. Exercise good work practices. The warnings,
precautions, and instructions discussed in this in-
struction manual cannot cover all possible conditions
and situations that may occur. It must be understood
by the operator that common sense and caution are
factors which cannot be built into this product, but
must be considered by the operator.
Welding Safety Instructions
& Warnings
WARNING!
Protect yourself and others from possible serious
injury or death. Keep children away. Read the
operating/Instruction manual before installing,
operating or servicing this equipment. Have all
installation, operation, maintenance, and repair
work performed by qualied people.
If an operator does not strictly observe all safety rules
and take precautionary actions, welding products
and welding processes can cause serious injury or
death, or damage to other equipment or property.
Safepracticeshavedevelopedfrompastexperience
in the use of welding and cutting.
These practices must be learned through study and
trainingbeforeusingthisequipment.Someofthese
practices apply to equipment connected to power
lines; other practices apply to engine driven equip-
ment. Anyone not having extensive training in weld-
ing and cutting practices should not attempt to weld.
SafepracticesareoutlinedintheEuropeanStandard
EN60974-1entitled:Safetyinweldingandalliedpro-
cesses.
WARNING!
Only use safety equipment that has been ap-
proved by an appropriate standards agency.
Unapproved safety equipment may not provide
adequate protection. Eye and breathing protec-
tion must be AS/NZS compliant for the specic
hazards in the work area.
DANGER!
Always wear AS/NZS compliant safety glasses
and full face shield tted with appropriate lter
shade number. (Refer Filter Table on page 17.)
CAUTION!
Heavy-duty work gloves, non-skid safety shoes
and hearing protection used for appropriate
conditions will reduce personal injuries.
CAUTION!
Have the equipment serviced by a qualied re-
pair person using identical replacement parts.
This will ensure that the safety of the power tool
is maintained.
Personal Safety
CAUTION!
Keep the work area well lit. Make sure there is ad-
equate space surrounding the work area. Always
keep the work area free of obstructions, grease,
oil, trash, and other debris. Do not use equipment
in areas near ammable chemicals, dust, and va-
pours. Do not use this product in a damp or wet
location.
1. Stay alert, watch what you are doing and use
common sense when operating equipment. Do
not use a tool while you are tired or under the
inuence of drugs, alcohol or medication. A mo-
ment of distraction when operating equipment
may result in serious personal injury.
2. Do not overreach. Keep proper footing and bal-
ance at all times. This enables better control of
the power tool in unexpected situations.
Arc Rays can Burn Eyes and Skin
DANGER!
Arc rays from the welding process produce
intense heat and strong ultraviolet rays that can
burn eyes and skin.
1. UseaWeldingHelmetorWeldingFaceShieldt-
tedwithapropershadelter(referAS60974-1,
AS/NZS1337.1andAS/NZS1338.1SafetyStand-
ards)toprotectyourfaceandeyeswhenweld-
ingorwatching.(SeeFilterTableonPage17).
2. Wear approved safety glasses. Side shields are
recommended.

16
3. Use protective screens or barriers to protect
others from ash and glare; warn others not to
watch the arc.
4. Wearprotectiveclothingmadefromdurable,
 ame-resistantmaterial(woolandleather)and
foot safety protection.
5. Neverwearcontactlenseswhilewelding.
Noise Can Damage Hearing
CAUTION!
Noise from some processes can damage hearing.
Use AS/NZS compliant ear plugs or ear mus if
the noise level is high.
Work Environment Safety
DANGER!
Remove any combustible material from the work
area.
1. When possible, move the work to a location well
away from combustible materials. If relocation
is not possible, protect the combustibles with a
cover made of re resistant material.
2. Removeormakesafeallcombustiblematerials
for a radius of 10 metres around the work area.
Useareresistantmaterialtocoverorblockall
doorways, windows, cracks, and other openings.
3. Enclose the work area with portable re resistant
screens. Protect combustible walls, ceilings,
oors, etc., from sparks and heat with re re-
sistant covers.
4. Ifworkingonametalwall,ceiling,etc.,prevent
ignition of combustibles on the other side by
moving the combustibles to a safe location. If
relocation of combustibles is not possible, desig-
nate someone to serve as a re watch, equipped
with a re extinguisher, during the welding pro-
cess and well after the welding is completed.
5. Donotweldorcutonmaterialshavingacom-
bustible coating or combustible internal struc-
ture, as in walls or ceilings, without an approved
method for eliminating the hazard.
6. After welding, make a thorough examination for
 evidenceofre.Beawarethatvisiblesmokeor
ame may not be present for some time after
the re has started. Do not weld or cut in atmos-
pheres containing dangerously reactive or am-
mable gases, vapours, liquids, and dust. Provide
adequate ventilation in work areas to prevent ac-
cumulation of ammable gases, vapours, and dust.
7. Do not apply heat to a container that has held
an unknown substance or a combustible mate-
rial whose contents, when heated, can produce
ammable or explosive vapours. Clean and
purge containers before applying heat. Vent
closed containers, including castings, before pre-
heating, welding, or cutting.
Electricity Can Kill
DANGER!
Touching live electrical parts can cause fatal shocks
or severe burns. The electrode and work circuit is
electrically live whenever the output is on.
The input power circuit and machine internal circuits
are also live when power is on. In semi-automatic or
automatic wire welding, the wire, wire reel, drive roll
housing, and all metal parts touching the welding
wire are electrically live. Incorrectly installed or im-
properly grounded equipment is a hazard.
1. Do not touch live electrical parts.
2. Wear dry, hole-free insulating gloves and body
protection.
3. Insulate yourself from the work and the ground
using dry insulating mats or covers.
4. Disconnectinputpowerbeforeinstallingorser-
vicingthisequipment.Lockinputpower,discon-
nect switch open, or remove line fuses so power
cannot be turned on accidentally.
5. Properly install andgroundthis equipment ac-
cording to national, state, and local codes.
6. Turn o all equipment when not in use. Discon-
nect power to equipment if it will be left unat-
tended or out of service.
7. Usefullyinsulatedelectrodeholders.Neverdip
the holder in water to cool it or lay it down on
the ground or the work surface. Do not touch
holders connected to two welding machines at
the same time or touch other people with the
holder or electrode.
8. Do not use worn, damaged, undersized, or poor-
ly spliced cables.
9. Do not wrap cables around your body.
10. Connect work piece to a good electrical ground.

17
WT140ARC Welding Machine
www.weldtech.net.nz
11. Do not touch the electrode while in contact with
thework(ground)circuit.
12. Useonlywell-maintainedequipment.Repairor
replace damaged parts as soon as practical.
13. In conned spaces or damp locations, do not
use a welder with AC output unless equipped
with a voltage reducer.
Arc rays from the welding process produce intense
heat and strong ultraviolet rays that can burn eyes
andskin.Usethefollowingtabletoselecttheappro-
priateshadenumberforaWeldingHelmetorWeld-
ingFaceShield.
1. UseaWeldingHelmetorWeldingFaceShieldt-
tedwithapropershadeoflter(seeAS60974-1,
AS/NZS1337.1andAS/NZS1338.1SafetyStand-
ards)toprotectyourfaceandeyeswhenweld-
ing or watching.
2. Wear approved safety glasses. Side shields are
recommended.
3. Use protective screens or barriers to protect
others from ash and glare; warn others not to
watch the arc.
4. Wear protective clothing made from durable,
ame-resistant material (wool and leather) and
foot protection.
5. Neverwearcontactlenseswhilewelding.

18
Fumes And Gases
WARNING!
Welding produces fumes and gases. Breathing
these fumes and gases can be hazardous to your
health.
1. Keep your head out of the fumes. Do not breathe
the fumes.
2. Ifinside,ventilatetheareaand/oruseanexhaust
at the arc to remove welding fumes and gases.
5. Watchforre,andkeepareextinguishernearby.
6. Beawarethat weldingon a ceiling,oor,bulk-
head, or partition can cause re on the hidden
side.
7. Do not weld on closed containers such as tanks
or drums.
8. Connecttheworklead/clamptothejobasclose
to the welding area as practical to prevent weld-
ing current from travelling long, possibly un-
known paths and causing electric shock and re
hazards.
9. Do not use a welder to thaw frozen pipes.
10.Remove the stick electrode from the holder or
cut o the welding wire at the contact tip when
not in use.
Sparks & Hot Metal
WARNING!
Chipping and grinding causes ying metal, and
as welds cool they can throw o slag.
1. WearanAS/NZSapprovedfaceshieldorsafety
goggles.Sideshieldsarerecommended.
2. Wear appropriate safety equipment to protect
the skin and body.
Cylinders
WARNING!
Gas cylinders contain gas under high pressure. If
damaged, a cylinder can explode. Since gas cyl-
inders are normally part of the welding
process, be sure to treat them carefully.
1. Protect compressed gas cylinders from excessive
heat, mechanical shocks, and arcs.
2. Install and secure cylinders in an upright posi-
tion by chaining them to a stationary support or
equipment cylinder rack to prevent falling or tip-
ping.
3. Keep cylinders away from any welding or other
electrical circuits.
4. Never allow a welding electrode to touch any
cylinder.
5. Useappropriateshieldinggas,regulators,hoses,
and ttings designed for the specic application;
maintain them and their associated parts in
good condition.
6. Turn your face away from the valve outlet when
opening the cylinder valve.
3. If ventilation is poor, use an approved air-sup-
plied respirator.
4. ReadtheSafetyDataSheets(SDS)andtheman-
ufacturer’s instruction for the metals, consuma-
bles, coatings, and cleaners.
5. Workinaconnedspaceonlyifitiswellventi-
lated, or while wearing an air-supplied respirator.
Shieldinggaesusedforweldingcandisplaceair
causinginjuryordeath.Besurethebreathingair
is safe.
6. Do not weld in locations near degreasing, clean-
ing, or spraying operations. The heat and rays of
the arc can react with vapours to form highly
toxic and irritating gases.
7. Do not weld on coated metals, such as galva-
nized, lead, or cadmium plated steel, unless the
coating is removed from the weld area, the area
is well ventilated, and if necessary, while wearing
an air- supplied respirator. The coatings and any
metals containing these elements can give o
toxic fumes if welded.
Fire & Explosive Risks
WARNING!
Sparks and spatter y o from the welding arc.
The ying sparks and hot metal, weld spatter,
work piece, and hot equipment can cause res
and burns.
Accidental contact of electrode or welding wire to
metal objects can cause sparks, overheating, or re.
1. Protect yourself and others from ying sparks
and hot metal.
2. Do not weld where ying sparks can strike am-
mable material.
3. Removeallammableswithin10moftheweld-
ing site.
4. Be alert that welding sparks and hot materials
from welding can easily go through small cracks
and openings to adjacent areas.

19
WT140ARC Welding Machine
www.weldtech.net.nz
As part of an on-going commitment to excellence
in product support, Euroquip oers a comprehensive
product warranty program.
In order to qualify for full warranty support, your
product must be registered.
Product not registered with Euroquip is supported
byabase12monthwarrantyonly.Sparepartsand
technical support will not be available for an unreg-
istered product outside of this base warranty period.
If a Euroquip dealer has not already registered your
product, please register it online at www.euroquip.
co.nz. Under‘Contact Us’ link.To request a physical
registration form, please contact Euroquip customer
service on 0800 387 678.
RegisteredwarrantyperiodfortheWT140ARC:
CommercialUse:12Months
DomesticUse:24Months
Warranty covers failure caused by manufacturing
and material defects in the product, during the war-
ranty period specied. The warranty period begins
when the product is purchased by the end user. War-
ranty is not transferrable and is only claimable by the
original purchaser.
Warranty does not cover parts that are subject to
wear and tear from usage.
Warranty covers failure of a product caused by defec-
tive materials and/or manufacturing for the period
given and the usage specied by Euroquip. The war-
ranty period begins when the product is purchased
by the end user. Warranty is not transferrable and is
only claimable by the original purchaser.
Warranty also does not cover failure caused by the
untimely replacement or service of the above wear-
ing parts. Evidence must be provided that the prod-
uct has been maintained and serviced suitably for a
claim to be considered under warranty.
Failurecausedbyincorrectoperationoftheproduct,
lack of proper care and maintenance of the product,
external damage, external circumstances such as
contaminated fuel or poor water supply, modica-
tionstotheproduct,attemptedrepair/servicebya
partyother than an ApprovedServiceAgent,is not
covered under warranty.
Warranty does not cover pre delivery service and ad-
justment, or failure that may occur as a result of lack
of/incorrectpredeliveryserviceandadjustment.
Warranty does not cover any incidental, indirect or
consequential loss, damage or expense that may re-
sult from any defect, failure or malfunction of a prod-
uct.
Shouldanyissuebefoundtobeacombinationofa
warranty failure and a non-warranty issue, the repair
cost component to rectify and repair the non-warran-
ty failure is the customers’ full responsibility.
The decision that an issue with a product qualies as
a warranty claim is made at the sole jurisdiction of Eu-
roquip.
No costs incurred will be considered under warranty
if repairs are carried out by a party other than a Euro-
quipApprovedServiceAgent,unlesswithpriorcon-
sent in writing from Euroquip.
It is the responsibility of the purchaser to deliver a
product under warranty to the nearest relevant ser-
vice agent or product reseller. Warranty does not cov-
er call outs, mileage and freight costs.
If a product is repaired under warranty, parts and
labour required for the repair will be supplied at no
charge.Warranty assessment and repair will be sched-
uled and executed according to the normal work ow
at the service location and depending on the avail-
ability of suitable replacement parts.
This warranty policy is an additional benet and does
not aect the legal rights of any end user, reseller or
service agent.
Warranty
Scanheretoregisteryourproduct

www.weldtech.net.nz
Congratulations on your new WELDTECH product. We are proud to have you as our customer and
will strive to provide you with the best service and reliability in the industry. This product is backed
by our extensive warranty and world-wide service network. To locate your nearest distributor or
service agency visit www.weldtech.net.nz, or email us at [e-mail].