Parweld XTM353SW User manual

OPERATOR MANUAL
ISSUE 1
XTM353SW
XTM403SW
XTM-WF100

Welcome
Thank you and congratulaons on choosing Parweld. This Owner’s Manual is designed to help you get the
most out of your Parweld products. Please take me to read the Safety precauons. They will help you protect
yourself against potenal hazards in the workplace. With proper maintanance this equipment should provide
years of reliable service. All our systems conform to ISO9001: 2000 and are independently audited by NQA.
The enre product range carries the CE mark, and is constructed in accordance with European direcves and
the product specic standards where they apply.
Further Informaon
Parweld is the UK’s leading supplier of MIG, TIG and Plasma torches and consumables.
For more informaon about Parweld’s complete range visit: www.parweld.com

CONTENTS
Contents
Page
1.0 Safety Precauons 4
2.0 Product descripon 6
3.0 Technical Specicaons 6
4.0 Descripon of controls 6
5.0 Installaon 7
5.1 Unpacking the Machine 8
5.2 Locaon 8
5.3 Input and grounding connecon 8
5.4 Output Polarity Connecons 8
5.5 Changing drive roll sets 9
5.6 Welding wire installaon 9
5.7 torch installaon 9
5.8 Work return lead connecon 9
5.9 Shielding gas connecon 10
6.0 Operaon 10
6.1 Feeding wire electrode 11
6.2 Spot Weld Mode 11
6.2 Opmising weld parameters 11
7.0 Fault nding 11
8.0 Accessories 14
9.0 Statement of warranty 15

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1.0 Safety Precauons
ELECTRIC SHOCK can kill.
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 semiautomac or automac wire welding, the wire,
wire reel, drive roll housing, and all metal parts touching
the welding wire are electrically live. Incorrectly installed or
improperly grounded equipment is a hazard.
Do not touch live electrical parts.
Wear dry, sound insulang gloves and body protecon.
Insulate yourself from work and ground using dry insulang
mats or covers big enough to prevent any physical contact
with the work ground.
Addional safety precauons are required when any
of the following electrically hazardous condions are
present: in damp locaons or while wearing wet clothing;
on metal structures such as oors, grangs, or scaolds;
when in cramped posions such as sing, kneeling,
or lying; or when there is a high risk of unavoidable or
accidental contact with the work piece or ground. For these
condions, use the following equipment in order presented:
1) a semiautomac DC constant voltage (wire) welder, 2) a
DC manual (sck) welder, And, do not work alone!
Disconnect input power before installing or servicing this
equipment. Lockout/tagout input power according to Safety
Standards.
Properly install and ground this equipment according to
naonal and local standards.
Always verify the supply ground - check and ensure that
input power cable ground wire is properly connected to
ground terminal in the receptacle outlet.
When making input connecons, aach proper grounding
conductor rst - double-check connecons.
Frequently inspect input power cable for damage or bare
wiring - replace cable immediately if damaged - bare wiring
can kill.
Turn o all equipment when not in use.
Do not use worn, damaged, under sized, or poorly spliced
cables.
Do not drape cables over your body.
If earth grounding of the work piece is required, ground it
directly with a separate cable.
Do not touch electrode if you are in contact with the work,
ground, or another electrode from a dierent machine.
Use only well-maintained equipment. Repair or replace
damaged parts at once. Maintain unit according to manual.
Wear a safety harness if working above oor level.
Keep all panels and covers securely in place.
Clamp work cable with good metal-to-metal contact to
work piece or worktable as near the weld as praccal.
Insulate work clamp when not connected to work piece to
prevent contact with any metal object.
Welding produces fumes and gases. Breathing these fumes
and gases can be hazardous to your health.
FUMES AND GASES can be hazardous.
Keep your head out of the fumes. Do not breathe the
fumes.
If inside, venlate the area and/or use local forced
venlaon at the arc to remove welding fumes and gases.
If venlaon is poor, wear an approved respirator.
Read and understand the Material Safety Data Sheets
(MSDS’s) and the manufacturer’s instrucons for metals,
consumable, coangs, cleaners, and de-greasers.
Work in a conned space only if it is well venlated, or
while wearing an air-supplied respirator. Always have a
trained watch person nearby. Welding fumes and gases can
displace air and lower the oxygen level causing injury or
death. Be sure the breathing air is safe.
Do not weld in locaons near de-greasing, cleaning, or
spraying operaons. The heat and rays of the arc can react
with vapours to form highly toxic and irritang gases.
Do not weld on coated metals, such as galvanized, lead,
or cadmium plated steel, unless the coang is removed
from the weld area, the area is well venlated, and while
wearing an air-supplied respirator. The coangs and any
metals containing these elements can give o toxic fumes if
welded.
ARC RAYS can burn eyes and skin.
Arc rays from the welding process produce intense, visible
and invisible (ultraviolet and infrared) rays that can burn
eyes and skin. Sparks y o from the weld.
Wear an approved welding helmet ed with a proper
shade of lter lenses to protect your face and eyes when
welding or watching
Wear approved safety glasses with side shields under your
helmet.
Use protecve screens or barriers to protect others from
ash, glare and sparks; warn others not to watch the arc.
Wear protecve clothing made from durable, ame
resistant material (leather, heavy coon, or wool) and foot

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protecon. Welding on closed containers, such as tanks,
drums, or pipes, can cause them to blow up. Sparks can y
o from the welding arc. The ying sparks, hot work piece,
and hot equipment can cause res and burns. Accidental
contact of electrode to metal objects can cause sparks,
explosion, overheang, or re. Check and be sure the area
is safe before doing any welding.
WELDING can cause re or explosion.
Remove all ammables within 10m of the welding arc.
If this is not possible, ghtly cover them with approved
covers.
Do not weld where ying sparks can strike ammable
material.
Protect yourself and others from ying sparks and hot
metal.
Be alert that welding sparks and hot materials from welding
can easily go through small cracks and openings to adjacent
areas.
Watch for re, and keep a re exnguisher nearby. Be
aware that welding on a ceiling, oor, bulkhead, or paron
can cause re on the hidden side.
Do not weld on closed containers such as tanks, drums, or
pipes, unless they are properly prepared according to local
regulaons
Connect work cable to the work as close to the welding
area as praccal to prevent welding current from travelling
along, possibly unknown paths and causing electric shock,
sparks, and re hazards.
Cut o welding wire at contact p when not in use.
Wear oil-free protecve garments such as leather gloves,
heavy shirt, cuess trousers, high shoes, and a cap. Remove
any combusbles, such as a butane lighter or matches, from
your person before doing any welding.
FLYING METAL can injure eyes.
Welding, chipping, wire brushing, and grinding cause sparks
and ying metal. As welds cool they can throw o slag.
Wear approved safety glasses with side shields even under
your welding helmet.
BUILDUP OF GAS can injure or kill.
Shut o shielding gas supply when not in use. Always
venlate conned spaces or use approved air-supplied
respirator.
HOT PARTS can cause severe burns.
Do not touch hot parts with bare handed.
Allow cooling period before working on gun or torch.
To handle hot parts, use proper tools and/or wear heavy,
insulated welding gloves and clothing to prevent burns.
MAGNETIC FIELDS can aect pacemakers.
Pacemaker wearers keep away.
Wearers should consult their doctor before going near arc
welding, gouging, or spot welding operaons.
NOISE can damage hearing.
Noise from some processes or equipment can damage
hearing.
Wear approved ear protecon if noise level is high.
Shielding gas cylinders contain gas under high pressure.
CYLINDERS can explode if damaged.
Protect compressed gas cylinders from excessive heat,
mechanical shocks, physical damage, slag, open ames,
sparks, and arcs. Install cylinders in an upright posion by
securing to a staonary support or cylinder rack to prevent
falling or pping. Keep cylinders away from any welding or
other electrical circuits. Never drape a welding torch over a
gas cylinder. Never allow a welding electrode to touch any
cylinder. Never weld on a pressurized cylinder - explosion
will result. Use only correct shielding gas cylinders,
regulators, hoses, and ngs designed for the specic
applicaon; maintain them and associated parts in good
condion.
Turn face away from valve outlet when opening cylinder
valve.
Use the right equipment, correct procedures, and
sucient number of persons to li and move cylinders.

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Read and follow instrucons on compressed gas
cylinders, associated equipment, and Compressed Gas
Associaon (CGA)
2.0 Product Descripon
The XTM 353SW and 403SW are complete
semiautomac constant voltage DC arc welding
machines built to meet CE specicaons. They
combine a constant voltage power source and a
constant speed wire feeder with a microcomputer-
based controller to form a reliable high-performance
welding system. A simple control scheme, consisng
of a range voltage and wire feed speed controls,
provides versality with ease of use and accuracy.
The machines also include built in water cooling and
recirculaon units to allow the use of water cooled
torches. Other features include separate wire feed
unit for remote operaon, an integral gas cylinder
mounng undercarriage, an adjustable Argon ow
regulator with cylinder pressure gauge and inlet
hose, a Parweld MIG torch, and a 3.0m work cable
with clamp. Digital meters display the actual welding
voltage and amperage and the machine has addional
controls for adjustment of burn back and so starng.
3.0 Technical Specicaons
The XTM353SW and 403SW are a separate type
machine with the wire feed unit connected to the
power supply but a 5m interconnecng cable for use
with 3 phase 400V supply.
Feature XTM353SW XTM403SW
Input voltage 400V +/-10% 400V +/-10%
Hz 50 50
Phases 3 3
Current Draw (A) 17.2 18
Fuse rang (A) 18 28
Output current
(A)
60-300 60-400
OCV 18-36 20-45
Load voltage 17-29 17-34
Feed speed m/
min
0.8-24 0.8-24
Feed motor 42V 42V
Wire drive 4 roll 4 roll
4.0 Descripon of controls
1. Digital display for amperage and Voltage
(displayed real me)
2. Water cooler selector switch. This allows the
water recirculaon pump and the ow switch
to be disabled when an Air cooled torch is
connected.
3. Mains input light This light illuminates when the
mains power is connected and the machine is
switched on.
4. On O switch. The machine is switched o when
the light (4) is o and the fan is not running.
5. Fault light This light will illuminate when a fault or
over temperature condion has occurred. If this
light illuminates allow the machine to cool with
the fan sll running unl it exnguished. If the
light does not go o when the power source has
cooled down then have the machine checked by a
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qualied engineer.
6. Fine Voltage selector switch. This switch is used to
select the require welding voltage each posion of
the switch represents approximately 0.5V. Do Not
operate this switch while welding
7. Coarse Voltage selector switch. This switch is used
to select the require welding voltage each posion
of the switch represents approximately 4V. Do Not
operate this switch while welding
8. Work return lead connecon. This socket allows
connecon of the work return lead to the front of
the machine.
9. Work return lead connecon. High inductance
connecon, this should be used when in spray
transfer mode to give a more stable arc. (Only
ed to XTM403SW)
10. Filling spout for coolant Only use Parweld
Ultracool
11. Coolant level indicator, keep topped up between
min and max.
12. Control circuit protecon fuse
13. Mains input connecon Input connecon for the
pre-installed mains cable
14. Socket for the interconnecon cable to link to the
wire feeder.
15. Water IN/OUT snap connecons
16. Welding power connecon to connect to the inter
connect cable.Protecon fuse for the Auxiliary
output
17. 2T 4T, when in the 2T posion the torch trigger
will have a momentary operaon i.e. the welding
operaon will start when the rigger is depressed
and stop when it is released. In the 4T posion a
short press and release of the trigger will start the
welding operaon and a short press and release
with stop the operaon. The 4T mode is ideal for
long welds as it reduces operator fague.
18. Gas purge buon. Pressing this buon allow gas
to ow through the welding torch and so allow
checking of the gas ow before starng the
welding process.
19. Wire inching buon, allows the welding wire to be fed through the
torch without engergising the welding power.
20. Wire feed speed adjustment, controls the speed of wire feeding from
0.8 to 24 m/min. Increasing the wire feed speed also has the eect of
increasing the welding current
21. Locaon for control socket if machine is ed with Push Pull torch
22. Torch connector The Euro connector provided the external
connecon for the welding torch
23. So start adjustment which controls the acceleraon of the wire feed
motor when the arc starts to reduce spaer and give a cleaner arc
iniaon.
24. Burn back control aects the wire feed motor over run when the
trigger is released and can be adjusted to ensure that the wire does
not burn back onto the contact p at the end of the weld
25. Pressure adjuster Used to adjust the pressure allied by the feed
rollers on the welding wire.
26. Shielding gas input connecon 3/8 BSP male connecon for the
shielding gas input.
27. Interconnecon cable control socket input
28. Welding power connecon.
29. Water connecons for inter-connect cable
5.0 Installaon
Read enre installaon secon before starng installaon.
SAFETY PRECAUTIONS
• ELECTRIC SHOCK can kill.
• Only qualied personnel should perform this installaon.
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26
27
28
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• Only personnel that have read and understood the
Operang Manual should install and operate this
equipment.
• Machine must be grounded per any naonal, local
or other applicable electrical regulaons.
• The MIG power switch is to be in the OFF posion
when installing work cable and torch and when
connecng other equipment.
5.1 Unpacking the Machine
Cut banding and li o cardboard carton. Cut banding
holding the machine to the skid. Remove corrugated
packing material. Remove accessories from Gas Bole
Plaorm.. Roll the machine o the skid
5.2 Locaon
Locate the welder in a dry locaon where there is
free circulaon of clean air into the louvres in the
back and out the front. A locaon that minimizes the
amount of smoke and dirt drawn into the rear louvres
reduces the chance of dirt accumulaon that can
block air passages and cause overheang.
5.3 Input and grounding connecon
WARNING
Before starng the installaon, check that your power
supply is adequate for the voltage, amperage, phase,
and frequency specied on the Machine nameplate.
The 400 volt 50 Hz machine is supplied with a 4m
input cable and without plug, ensure that you connect
a plug that is suitably rated for the power draw of
the machine and the environmental locaon. Have a
qualied electrician connect the input plug. For long
runs over 30m , larger copper wires should be used.
The green/yellow wire in the input cable connects
to the frame of the machine. This ensures proper
grounding of the machine when the machine plug is
inserted into the receptacle.
5.4 Assembly of Separate wire feeder
Note:- if the wire feeder is going to be used remotely
to the power source there is not need to assemble the
mounng post.
If the wire feeder is to be used local to the power
source.
Place the at chrome disc over the hole in the top of
the power source lid . Insert the threaded chrome
post thread end rst through the at disc and screw
it securely into the top of the machine. Li the wire
feeder up onto the power source and locate the post
into the tube on the underside of the wire feeder
taking care to ensure it is fully located on the post.
Connecon of the interconnect cable.
Working at the wire feeder end insert the Dinse power
connector and twist it to lock it securely. Connect the
gas hose to the inlet on the rear of the wire feeder
followed by the 4 pin plug taking care to align the pins
before inserng the plug.
At the power source end connect the Dinse socket and
twist to secure, connect the 5 pin control socket taking
care to align the pins before inserng the plug. The
gas hose should be lead o to the outlet connecon of
the gas regulator.

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1. Open the Wire drum cover by pulling down and
out on the boom of the cover
2. Unscrew the plasc retaining wheel from the end
of the spool holder sha.
3. Posion the wire spool so that it will rotate in a
direcon when feeding so as to be de-reeled from
the boom of the coil.
4. Slide the wire spool all the way onto the sha and
ret the plasc retaining nut.
Note:- There is a fricon brake on the reel hub
assembly to prevent the wire spool over running
when welding stops ensure the this is slackened to the
minimum seng. It can be adjusted by means of the
nut visible when the plasc nut is removed.
Fig 1 Fig 2
x
5.5 Output Polarity Connecons
The welder, as shipped from the factory, is connected for electrode posive
(+) polarity. This is the normal polarity for MIG welding.
5.6 Changing drive roll sets
1. Turn o the power source.
2. Release the pressure on the idle rolls by swinging the adjustable
pressure arm down. Li the cast idle roll assembly and allow it to sit
in an upright posion.
3. Unscrew the plasc knob retaining the lower grooved drive roll and
side o the drive roller.
4. Ensure the wire size marked on the side of the feed roller matches
the wire size to be used.
5. Replace the drive rolls in reverse of the above procedure ensuring the
wire size to be used is marked on the outward facing side of the roller
as it is reed.
NOTE: Be sure that the torch liner and contact p are also sized to match
the selected wire size.
5.7 Welding wire installaon
5. Turn the Spool unl the free end of the electrode
is accessible. While securely holding the
electrode, cut o the bent end and straighten the
rst six inches. (If the electrode is not properly
straightened, it may not feed properly through the
wire drive system Manually feed the wire from
the wire reel and through the wire guide and then
over the top of the wire feed rollers (ensure the
pressure arms are in the raised posion.)
6. Connue to feed the wire through the outlet
guide unl 20mm of wire is protruding from the
front of the machine torch connector.
7. Reposion the adjustable pressure arms to
there original posion to apply pressure. Adjust
pressure as necessary.
Note the pressure arm should be adjusted in order to
give the minimum amount of pressure on the wire to
allow reliable feeding,
5.8 torch installaon
Your Parweld MIG/MAG Welding Torch has been
supplied ready to weld. It has been supplied with
the standard consumables denoted in the product
brochure.
To connect the torch to the power source:-
1. Remove the p adaptor and contact p
2. Inch the wire from the exit of the wire guide on
the feed unit as Figure 1. Ensure that it does not
short out on any machine panels.
3. Carefully slide the electrode wire into the torch
liner and slowly locate the torch gun plug body
into the feed unit central connector and ghten
the gun plug nut as Figure 2
Note; To aid the inial locaon of a new torch and to
prevent damage to the gas nipple O-ring a very light
applicaon of grease to the O Ring is benecial.
4. Keeping the torch as straight as possible, use the
power source inch facility or torch trigger to feed
the electrode wire 50mm from the end of the liner
conduit.
5. Once the electrode wire has stopped, ret the p
adaptor, diuser, contact p and gas nozzle.
6. Trim the electrode wire to within 5mm of the
face of the nozzle, this will facilitate jolt free arc
iniaon.
7. Press the gas purge buon and check the gas ow
is adequate for your applicaon.
8. An inexpensive ow meter is available from
Parweld reference 806001.
9. If you are connecng a water-cooled torch ensure
you have the recommended water ow rate.
Note;- It is essenal to ensure adequate ow of clean,
cool water to prevent irreparable torch failure, a
minimum of 1.2 l/min is recommended.
Parweld recommend the use of its XTS water
recirculaon system designed specically for use with
all water cooled MIG, TIG and Plasma welding torches.
The Parweld XTS recirculaon equipment can be ed
with a fail-safe ow protecon device to prevent

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10
CONTROLS
overheang or meltdown.
Note. Water ows into the torch through the blue
hose. The blue hose delivers cold water directly
to the prime source of heat, the swan neck and
consumables. The re circulated water is then passed
through the torch power cable to cool the power cable
as it is returned to the cooler through the red water
return lead.
Ensure all air is removed from the water cooling circuit
before welding.
5.9 Work return lead connecon
Insert the work return lead connector into the
receptacle on the front panel of the machine and twist
it clockwise unl ghtly secured.
Connect the earth clamp to the work piece as close as
possible to the point to be welded and ensure that a
good electrical connecon is created to bare metal.
Note the XTM403SW has 2 work return lead sockets
providing dierent inductance sengs refer to the
Operang instrucons for your preferred seng.
5.10 Shielding gas connecon
1. Connect gas hose to the output connecon of a
gas regulator capable of supplying the correct gas
ow for the welding operaon.
Note if the gas cylinder is to be stored on the back of
the machine ensure it is secured using the retenon
chain provided
5.11 Water cooling system
Dependant upon the type of torch to be use the
water cooling system can be disabled or enabled as
required. Move the selector switch on the front panel
the enable or disable the water pump.
Note The use of a water cooled torch with the water
cooled disabled will cause permanent damage to the
torch.
For operaon with a water cooled torch ensure the
following
a) Selector switch on the front panel is moved to the
on posion.
b) The water tank is lled with Parweld Ultra Cool
coolant so that the level is at the maximum level in the
sight glass at the rear of the machine.
c) All the inter connecng water hoses are secure
d) Switch on the machine and allow the water to ow
through the system for 2 minutes to ensure all air is
purged and the system is fully primed. Switch o the
machine and check the coolant level topping up to
maximum as required.
Note:- Operaon with coolant other than Parweld
Ultra cool can lead to blocking of the system and
also premature seal failure, such failures will not be
covered under warranty.
6.0 Operaon
1. Switch on the machine using the switch no the
front panel, this lights the Green LED on the front
panel.
2. Turn the “VOLTAGE SELECTOR” switches Set
voltage midway between high/low voltages.
NOTE: Check that drive rolls, and torch parts are
correct for the wire size and type being used. If
using a water cooled torch ensure the water pump
selector switch is in the on posion and all water
hoses are connected and the water tank is full of
Ultra cool coolant.
3. The opmum idle roll pressure varies with
type of wire, wire diameter, surface condions,
lubricaon, and hardness. As a general rule, hard
wires may require greater pressure, and so, or
aluminium wire, may require less pressure than
the factory seng. The opmum idle roll seng
can be determined as follows:
4. Press end of gun against a solid object that is
electrically isolated from the welder output and
press the gun trigger for several seconds.
5. If the wire “bird nests”, jams or breaks at the
drive roll, the idle roll pressure is too great. Back
the adjustment knob out 1/2 turn, run new wire.
If the only result was drive roll slippage, loosen
the Hand nut on the central connector and pull
the gun forward about 6” (15cm) away from the
power source. There should be a slight waviness
in the exposed wire. If there is no waviness, the
pressure is too low. Tighten the adjustment knob
1/4 turn, reinstall the gun cable and repeat the
above steps.
6.1 Feeding wire electrode
Note when triggering, the electrode and drive
mechanism are electrically “LIVE” relave to work and
ground and remain “LIVE” several seconds aer the
gun trigger is released.
WARNING
When using an open arc process, it is necessary to use

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11
correct eye, head, and body protecon.
1. Posion wire over joint. The end of the wire may
be lightly touching the work.
2. Lower welding helmet, operate gun trigger, and
begin welding. Hold the gun so the contact p to
work distance is about 3/8” (10 mm).
3. To stop welding, release the gun trigger and then
pull the gun away from the work aer the arc goes
out.
4. When no more welding is to be done, close valve
on gas cylinder (if used), momentarily operate gun
trigger to release gas pressure and turn o the
machine. 6.2 Opmising weld
parameters
NOTE These sengs are guidelines only. Material and
wire type, joint design, t up, posion, shielding gas,
etc. aect sengs. Produce test welds to be sure they
comply to specicaons.
Material thickness determines weld parameters.
1. Convert Material Thickness to Amperage (A)
(0.25mm= 1 Amp) 3.2mm = 125 A
2. Select Wire Size
Amperage Range Wire Size
40 - 145 A 0.8 mm
50 - 180 A 1.0 mm
75 - 250 A 1.2 mm
3. Select Wire Speed (Amperage)
Wire Size Feed speed
0.8 mm 0.05m/min per Amp
1.0 mm 0.04m/min per Amp
1.2 mm 0.025m/min per Amp
So based on 3.2 mm material thickness amperage
should be 125A if using 1.0mm wire then the wire
feed speed should be
0.04 X 125= 5m/min
Wire speed (amperage) controls weld penetraon
4. Select Voltage. Voltage controls height and width
of weld bead.
Low Voltage: wire stubs into work
High Voltage: arc is unstable (spaer)
Set voltage midway between high/low voltages.
And then ne tune accordingly
NOTE These sengs are guidelines only. Material and
wire type, joint design, t up, posion, shielding gas,
etc. aect sengs. Produce test welds to be sure they
comply to specicaons.
6.3 Addional welding controls
Burn back adjustment. when welding at high
amperages the wire can oen burn back onto or close
to the contact p to prevent this happening you can
increase the burn back control (18) located inside the
wire spool cover.
So Start. The so start control slows the acceleraon
of the wire feed motor as the act starts and so reduces
wire snubing and spaer at the weld start. This control
should be adjusted to give a smoother start to the
weld. (17).
Inductance seng XTM403SW only. This allows
2 levels of inductance to give the desired arc
characteriscs typically for low amperage with dip
transfer you should use the low inductance seng
as this speeds the burn o of the wire in dip transfer
mode. For higher amperages and spray transfer the
higher inductance seng is preferable.
7.0 Fault nding
Problem Cause/Correcve Acon
Porosity - small cavies or
holes
Resulng from gas
pockets in weld metal.
Inadequate shielding
gas coverage. Check for
proper gas ow rate.
Remove spaer from
gun nozzle.
Check gas hoses for
leaks.
Eliminate dras near
welding arc.
Place nozzle 6-13 mm
from work piece Hold
gun near bead at end of
weld unl molten metal
solidies.
Wrong gas. Use welding
grade shielding gas;
change to dierent gas.
Dirty welding wire. Use
clean, dry welding wire.
Eliminate pickup of oil
or lubricant on welding
wire from feeder or
liner.
Work piece dirty.
Remove all grease, oil,
moisture, rust, paint,
coangs, and dirt from
work surface before
welding. Use a more
highly deoxidizing
welding wire (contact
supplier).
Welding wire extends
too far out of nozzle.
Be sure welding wire
extends not more than
13 mm beyond nozzle.

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Problem Cause/Correcve Acon
Incomplete fusion to base
metal
Work piece dirty.
Remove all grease, oil,
moisture, rust, paint,
coangs, and dirt from
work surface before
welding.
Insucient heat input.
Select higher voltage
range and/or adjust wire
feed speed.
Improper welding
technique. Place
stringer bead in proper
locaons) at joint during
welding.
Adjust work angle or
widen groove to access
boom during welding.
Momentarily hold arc
on groove side walls
when using weaving
technique.
Keep arc on leading
edge of weld puddle.
Use correct gun angle of
0 to 15 degrees.
Excessive Penetraon
– weld metal melng
through base metal and
hanging underneath
weld.
Excessive heat input.
Select lower voltage
range and reduce wire
feed speed.
Increase travel speed.
Problem Cause/Correcve Acon
Lack Of Penetraon -
shallow
Fusion between weld
metal and
Base metal.
Improper joint
preparaon. Material
too thick. Joint
preparaon and design
must provide access to
boom of groove while
maintaining
Proper welding wire
extension and arc
characteriscs.
Improper weld
technique. Maintain
normal gun angle of 0
to 15 degrees to achieve
maximum penetraon.
Keep arc on leading
edge of weld puddle.
Ensure welding wire
extends not more than
13 mm beyond nozzle.
Insucient heat input.
Select higher wire feed
speed and/or select
higher voltage range.
Reduce travel speed.
Burn-Through - weld
metal melng
Completely through base
metal
Resulng in holes where
no metal remains.
Excessive heat input.
Select lower voltage
range and reduce wire
feed speed.
Increase and/or
maintain steady travel
speed.
12

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13
Problem Cause/Correcve Acon
Excessive Spaer -
scaering of
Molten metal parcles
that cool to solid form
near weld bead.
Wire feed speed too
high. Select lower wire
feed speed.
Voltage too high. Select
lower voltage range.
Electrode extension
(sck out) too long.
Use shorter electrode
extension (sick out).
Work piece dirty.
Remove all grease, oil,
moisture, rust, paint,
undercoang, and dirt
from work surface
before welding.
Insucient shielding gas
at welding arc. Increase
ow of shielding gas at
regulator/ow meter
and/or prevent dras
near welding arc.
Dirty welding wire. Use
clean, dry welding wire.
Eliminate pickup of oil
or lubricant on welding
wire from feeder or
liner.
Wire feed unit operates
but no gas ow .
Gas cylinder empty
Gas regulator closed
Faulty solenoid
Restricon in torch
cables
Wire feed unit operates,
but does not feed
Insucient drive roll
pressure
Incorrect drive rolls
Excessive wire spool
brake tension
Incorrect liner
Blocked liner
Bird nesng
Burn back
Bird nesng Excessive feed roll
pressure
Incorrect or blocked
liner
Incorrect contact p size
Contact p overheang
Restricon in torch
cable
Misaligned drive rolls or
wire guides
Excessive cable kinkage
Problem Cause/Correcve Acon
Burn back Improper voltage seng
Improper sck out
Errac wire feed
Incorrect or blocked
liner
Contact p overheang
Excessive cable kinking
Adjust the burn back
control correctly
Errac Wire Feeding or
Arc
Improper drive roll
tension
Improper drive roll size
Worn drive rolls
Incorrect or blocked
liner
Incorrect wire guide size
Misaligned drive rolls or
wire guide
Gaps at liner or wire
guide juncons
Incorrect contact p size
Contact Tip overheang
Spaer adhesion on exit
geometry of p bore
Excessive cable kinkage
Poor earth or cable
connecons
Weld joint area dirty
Yellow temperature light
illuminates
Power source has
over heated leave the
machine running to
allow it to cool down.
Ensure entry and exit
vents on machine are
clear and machine has a
good supply of cooling
air.
Reduce operang duty
cycle and or amperage.

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Everyday Gas Regulators – 300 BAR
Single Stage
Features
Flow rate up to 96m3/h (3389 3/h)
• Full 300 bar capability
• Outlet pressure indicated on the bonnet
• Boom entry design suited for top outlet cylinder
www.parweld.com
14
Maximum Outlet Pressure
E700140 Argon Preset Regulator 3.0 Bar
E700141 Argon Indicator Regulator 3.0 Bar
E700113 1 Gauge Argon 30 lpm ow
E700123 2 Gauge Argon 30 lpm ow
Flow Meters
Features
• Designed from brass bar whilst the tube
and cover are moulded from high quality
polycarbonate to ensure high impact
resistance and clarity
• Calibrated to operate at an inlet
pressure
of 30PSI
• Sensive needle valve provides easy
adjustment and the downward facing
outlet connecon eliminates hose
kinking.
Fings
• Fied with standard 3/89 BSP inlet and
valves
Fings
• Fied with standard 3/89 BSP
outlet
• Fied with 5/89 BSP inlet
connecons
Stock Code Descripon
outlet connecons
Stock Code Descripon
706101 Flow Meter Mixed Gas 25 lpm (MIG)
Gas ow Tester
• Designed to check gas ow at the front of Mig Torches.
Stock Code Descripon
806001 Gas ow Tester
8.0 Accessories
8.1 Drive rolls
Wire 0.8/1.0 1.0/1.2 1.2/1.6
Mild steel XTFR0810 XTFR1012 XTFR1216
Stainless
Steel
XTFR0810 XTFR1012 XTFR1216
Aluminum XTFR0810A XTFR1012A XTFR1216A
Flux cored XTFR0810 XTFR1012 XTFR1216

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15
9.0 Statement of Warranty
Limited Warranty:
Parweld Ltd, hereaer, “Parweld” warrants its customers that its products will be free of defects in workmanship
or material. Should any failure to conform to this warranty appear within the me period applicable to the
Parweld products as stated below, Parweld shall, upon nocaon thereof and substanaon that the product
has been stored, installed, operated, and maintained in accordance with Parweld’s specicaons, instrucons,
recommendaons and recognized standard industry pracce, and not subject to misuse, repair, neglect,
alteraon, or accident, correct such defects by suitable repair or replacement, at Parweld’s sole opon, of any
components or parts of the product determined by Parweld to be defecve.
Parweld makes no other warranty, express or implied. This warranty is exclusive and in lieu of all others,
including, but not limited to any warranty of merchantability or tness for any parcular purpose.
Limitaon of Liability:
Parweld shall not under any circumstances be liable for special, indirect or consequenal damages, such as,
but not limited to, lost prots and business interrupon. The remedies of the purchaser set forth herein are
exclusive and the liability of Parweld with respect to any contract, or anything done in connecon therewith
such as the performance or breach thereof, or from the manufacture, sale, delivery, resale, or use of any
goods covered by or furnished by Parweld whether arising out of contract, negligence, strict tort, or under any
warranty, or otherwise, shall not, except as expressly provided herein, exceed the price of the goods upon which
such liability is based. No employee, agent, or representave of Parweld is authorized to change this warranty in
any way or grant any other warranty.
Purchaser’s rights under this warranty are void if replacement parts or accessories are used which in Parweld’s
sole judgement may impair the safety or performance of any Parweld product.
Purchaser’s rights under this warranty are void if the product is sold to purchaser by non-authorized persons.
The warranty is eecve for the me stated below beginning on the date that the authorized Distributor delivers
the products to the purchaser. Notwithstanding the foregoing, in no event shall the warranty period extend
more than the me stated plus one month from the date Parweld delivered the product to the authorized
distributor.
Main Transformers and Recers 2 Years
Other machine parts 2 year