Uni-Mig KUMJR140DC, KUMJR170DC Operating Manual
1
UNI-FLAME
UNI-FLAME AUTOLIFT
240 Volt
Lift Arc DC/TIG
Lift Arc DC/TIG
YEARS Warranty
(Power Source)
3
Please read and understand this instruction manual carefully
before the installation and operation of this equipment.
OPERATING MANUAL
KUMJR140DC
KUMJR170DC
©
Welding Guns Of Australia PTY LTD 2012
2
WARRANTY
• 3 Years from date of purchase.
• Welding Guns Of Australia PTY LTD Ltd warranties all goods as specified by the manufacturer
of those goods.
• This Warranty does not cover freight or goods that have been interfered with.
• All goods in question must be repaired by an authorised repair agent as appointed by this
company.
• Warranty does not cover abuse, mis-use, accident, theft, general wear and tear.
• New product will not be supplied unless Welding Guns Of Australia PTY LTD has inspected
product returned for warranty and agree’s to replace product.
• Product will only be replaced if repair is not possible
• Please view full Warranty term and conditions supplied with machine or at www.unimig.com.au/
warranty.asp or at the back of this manual.
Thank you for your purchase of your UNI-MIG welding machine.
We are proud of our range of welding equipment that has a proven track record of innovation,
performance and reliability.
Our product range represents the latest developments in Inverter technology put together by our
professional team of highly skilled engineers. The expertise gained from our long involvement with
inverter technology has proven to be invaluable towards the evolution and future development of
our equipment range. This experience gives us the inside knowledge on what the arc characteristics, performance and interface between man and machine should be.
Within our team are specialist welders that have a proven history of welding knowledge and expertise, giving vital input towards ensuring that our machines deliver control and performance to the
utmost professional level.
We employ an expert team of professional sales, marketing and technical personnel that provide
us with market trends, market feedback and customer comments and requirements. Secondly they
provide a customer support service that is second to none, thus ensuring our customers have condence that they will be well satised both now and in the future.
UNI-MIG welders are manufactured and compliant with - AS/NZ60974.1 2006 - AS60974-6:2006
guaranteeing you electrical safety and performance.
CONTENTS PAGE
Warranty 2
Safety 4-5
Technical Data, Product Information 6-7
Machine Layout Descriptions 8
Installation & Operation for MMA (stick) Welding 9
MMA General Description 10-11
Installation & Operation for DC TIG Welding with Lift Arc 12-13
DC TIG General Description 14-17
17V Tig Torch Parts Breakdown 18-19
MMA (Stick) Welding Trouble Shooting 20
TIG Welding Trouble Shooting 21-22
Sapre Part Identication 23
3
SAFETY
Welding and cutting equipment can be dangerous to both the operator and people in or near the
surrounding working area, if the equipment is not correctly operated. Equipment must only be
used under the strict and comprehensive observance of all relevant safety regulations.
Read and understand this instruction manual carefully before the installation and operation of this
equipment.
• Do not switch the function modes while the machine is operating. Switching of the function modes during
welding can damage the machine. Damage caused in this manner will not be covered under warranty.
• Disconnect the electrode-holder cable from the machine before switching on the machine, to avoid arcing
should the electrode be in contact with the work piece.
• Operators should be trained and or qualied.
Electric shock: It 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 internal machine circuits are also live when power is on. In Mig/Mag welding,
the wire, drive rollers, wire feed housing, and all metal parts touching the welding wire are
electrically live. Incorrectly installed or improperly grounded equipment is dangerous.
• Connect the primary input cable according to Australian and New Zealand standards and regulations.
• Avoid all contact with live electrical parts of the welding circuit, electrodes and wires with bare hands.
The operator must wear dry welding gloves while he/she performs the welding task.
• The operator should keep the work piece insulated from himself/herself.
• Keep cords dry, free of oil and grease, and protected from hot metal and sparks.
• Frequently inspect input power cable for wear and tear, replace the cable immediately if damaged,
bare wiring is dangerous and can kill.
• Do not use damaged, under sized, or badly joined cables.
• Do not drape cables over your body.
Fumes and gases are dangerous. Smoke and gas generated whilst welding or cutting can
be harmful to people’s health. Welding produces fumes and gases. Breathing these fumes and
gases can be hazardous to your health.
• Do not breathe the smoke and gas generated whilst welding or cutting, keep your head out of the fumes
• Keep the working area well ventilated, use fume extraction or ventilation to remove welding fumes and
gases.
• In conned or heavy fume environments always wear an approved air-supplied respirator.
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 locations near de-greasing, cleaning, or spraying operations. The heat and rays of the arc
can react with vapours to form highly toxic and irritating gases.
• Materials such as galvanized, lead, or cadmium plated steel, containing elements that can give off toxic
fumes when welded. Do not weld these materials unless the area is very well ventilated, and or wearing
an air supplied respirator.
Arc rays: harmful to people’s eyes and skin. Arc rays from the welding process produce
intense visible and invisible ultraviolet and infrared rays that can burn eyes and skin.
• Always wear a welding helmet with correct shade of lter lens and suitable protective clothing including
welding gloves whilst the welding operation is performed.
• Measures should be taken to protect people in or near the surrounding working area. Use protective
screens or barriers to protect others from ash,glare and sparks; warn others not to watch the arc.
MACHINE OPERATING SAFETY
4
Fire hazard. Welding on closed containers, such as tanks,drums, or pipes, can cause them
to explode. Flying sparks from the welding arc, hot work piece, and hot equipment can cause
res and burns. Accidental contact of electrode to metal objects can cause sparks, explosion,
overheating, or re. Check and be sure the area is safe before doing any welding.
• The welding sparks may cause re, therefore remove any ammable materials away from the working
area, at least 12m from the welding arc. Cover ammable materials and containers with approved covers
if unable to be moved from the welding area.
• Do not weld on closed containers such as tanks, drums, or pipes, unless they are properly prepared
according to the required Safety Standards to insure that ammable or toxic vapors and substances are
totally removed, these can cause an explosion even though the vessel has been “cleaned”.
Vent hollow castings or containers before heating, cutting or welding. They may explode.
• Do not weld where the atmosphere may contain ammable dust, gas, or liquid vapours (such as petrol)
• Have a re extinguisher nearby and know how to use it. Be alert that welding sparks and hot materials
from welding can easily go through small cracks and openings to adjacent areas. Be aware that welding
on a ceiling, oor, bulkhead, or partition can cause re on the hidden side.
Gas Cylinders. Shielding gas cylinders contain gas under high pressure. If damaged, a cylinder can explode. Because gas cylinders are normally part of the welding process, be sure to
treat them carefully. CYLINDERS can explode if damaged.
• Protect gas cylinders from excessive heat, mechanical shocks, physical damage, slag, open ames,
sparks, and arcs.
• Insure cylinders are held secure and upright to prevent tipping or falling over.
• Never allow the welding electrode or earth clamp to touch the gas cylinder, do not drape welding cables
over the cylinder.
• Never weld on a pressurised gas cylinder, it will explode and kill you.
• Open the cylinder valve slowly and turn your face away from the cylinder outlet valve and gas regulator.
Gas build up. The build up of gas can causes a toxic environment, deplete the oxygen content
in the air resulting in death or injury. Many gases used in welding are invisible and odourless.
• Shut off shielding gas supply when not in use.
• Always ventilate conned spaces or use approved air-supplied respirator.
Electronic magnetic elds. MAGNETIC FIELDS can affect Implanted Medical Devices.
• Wearers of Pacemakers and other Implanted Medical Devices should keep away.
• Implanted Medical Device wearers should consult their doctor and the device manufacturer before going
near any electric welding, cutting or heating operation.
Noise can damage hearing. Noise from some processes or equipment can damage hearing.
Wear approved hearing protection if noise level is high.
Hot parts. Items being welded generate and hold high heat and can cause severe burns.
Do not touch hot parts with bare hands. Allow a cooling period before working on the welding
gun. Use insulated welding gloves and clothing to handle hot parts and prevent burns.
5
CAUTION
1. Working Environment.
1.1 The environment in which this welding equipment is installed must be free of grinding dust, corrosive
chemicals, ammable gas or materials etc, and at no more than maximum of 80% humidity.
1.2 When using the machine outdoors protect the machine from direct sun light, rain water and snow etc;
the temperature of working environment should be maintained within -10°C to +40°C.
1.3 Keep this equipment 30cm distant from the wall.
1.4 Ensure the working environment is well ventilated.
2. Safety Tips.
2.1 Ventilation
This equipment is small-sized, compact in structure, and of excellent performance in amperage output.
The fan is used to dissipate heat generated by this equipment during the welding operation.
Important: Maintain good ventilation of the louvers of this equipment. The minimum distance between
this equipment and any other objects in or near the working area should be 30 cm. Good ventilation is
of critical importance for the normal performance and service life of this equipment.
2.2
Thermal Overload protection.
Should the machine be used to an excessive level, or in high temperature environment, poorly
ventilated area or if the fan malfunctions the Thermal Overload Switch will be activated and the
machine will cease to operate. Under this circumstance, leave the machine switched on to keep the
built-in fan working to bring down the temperature inside the equipment. The machine will be ready for
use again when the internal temperature reaches safe level.
2.3
Over-Voltage Supply
Regarding the power supply voltage range of the machine, please refer to “Main parameter” table.
This equipment is of automatic voltage compensation, which enables the maintaining of the voltage
range within the given range. In case that the voltage of input power supply amperage exceeds the
stipulated value, it is possible to cause damage to the components of this equipment. Please ensure
your primary power supply is correct.
2.4 Do not come into contact with the output terminals while the machine is in operation. An electric shock
may possibly occur.
MAINTENANCE
Exposure to extremely dusty, damp, or corrosive air is damaging to the welding machine. In order to prevent any possible failure or fault of this welding equipment, clean the dust at regular intervals with clean and
dry compressed air of required pressure.
Please note that: lack of maintenance can result in the cancellation of the guarantee; the guarantee of
this welding equipment will be void if the machine has been modied, attempt to take apart the machine or
open the factory-made sealing of the machine without the consent of an authorized representative of the
manufacturer.
TROUBLE SHOOTING
Caution: Only qualied technicians are authorized to undertake the repair of this welding equipment.
For your safety and to avoid Electrical Shock, please observe all safety notes and precautions
detailed in this manual.
Note:
Minimum Motor Generator Power Suggested:- 6KVA - ARC 140 / 7KVA - ARC170
6
Product Code: KUMJR140CA
MMA option includes: ARC140 Machine, Earth Lead & Arc Lead 16mm x 4m, PVC Carry Case
Product Code: KUMJR140CT
TIG option includes: ARC140 Machine, Earth Lead & Arc Lead 16mm x 4m, 17V x 4m Tig Torch, Argon Regulator and
PVC Carry Case
Technical Data
Power Supply / Phases (V-Ph) 240V - 1 ±15%
Rated Input Power (KVA) 6.2
ieff (Amps) 14.2A
Rated Input Current (A) 26
Rated Output 140A/25.6V
Welding Current Range 10~140A
No-Load Voltage (V) 80
Duty Cycle @ 40ºC as per AS/NZ60974 30%@140Amps MMA
30%@140Amps TIG
Duty Cycle @ 25ºC (approximate) 100%@77Amps MMA
100%@100Amps TIG
Efciency (%) 85
Power Factor 0.70
Protection Class IP21S
Insulation Class F
Size (mm) 290 x 115 x 200
Weight (kg) 4.9
Warranty 3 years on power source
MMA/TIG - 140Amp DC Welding Machine
Small, Lightweight and Portable
Welds: Steels, Stainless, Cast Iron, Bronze, Copper
Overview
The ARC140 is an inverter-based welding machine produced using the latest in IGBT technology. Low cost and portable this
machine is reliable, robust and stacked with features that you can expect from a quality welder. The DC MMA welding capability
delivers a smooth and incredibly stable arc allowing easy welding with electrodes producing high quality welds including cast Iron,
stainless and low hydrogen. The ARC140 is equipped with DC Lift Arc function, connection of the 17V Tig torch allows quality DC Tig
welding of steel, stainless steel, bronze and copper. The Lift Arc function is superb and delivers perfect arc ignition every time without any
sticking of the tungsten electrode to the work piece, a remarkably smooth stable arc produces high quality Tig welds. The ARC140 is an
exceptional machine that is suitable for a wide range of applications including light industrial use, site welding, farming, along with repair and
maintenance applications. The Arc140 is packaged in a tough PVC carry case with your choice of MMA option accessories or
MMA/TIG option accessories. The-ARC140 gives you the best of both worlds– great portability, with the power to get the job done.
Built to our specication and manufactured in compliance to AS/NZ60974.1
Features
• Latest IGBT inverter technology
• MMA
(stick electrode)
• Hot start (improves electrode starting)
• Arc Force (boosts current to prevent electrode extinguishing)
• Excellent arc stability with all electrodes
• DC TIG
• Lift Arc ignition
(prevents tungsten sticking during arc ignition)
• Ultra smooth DC TIG welding current
• Thermal overload protection
• IP21S rating for environmental/safety protection
• Generator compatible
(recommend 6.0 KVA minimum)
• Tolerant to variable power supplies
ARC140CT
Tig Option
ARC140CA
MMA Option
KUMJR140DC
YEARS Warranty
(Power Source)
3
Certified - AS/NZ60974.1
7
Product Code: KUMJR170CAMMA option includes: ARC170 Machine, Earth Lead & Arc Lead 16mm x 4m, PVC Carry
Case
Product Code: KUMJR170CT
TIG option includes: ARC170 Machine, Earth Lead & Arc Lead 16mm x 4m, 17V x 4m Tig Torch, Argon Regulator and
PVC Carry Case
Technical Data
Power Supply / Phases (V-Ph) 240V - 1 ±15%
Rated Input Power (KVA) 7.7
ieff (Amps) 15A
Rated Output 170A/26.8V
Welding Current Range 10~170A
No-Load Voltage (V) 80
Duty Cycle @ 40ºC as per AS/NZ60974 25%@170Amps MMA
35%@170Amps TIG
Duty Cycle @ 25ºC (approximate) 100%@85Amps MMA
100%@100Amps TIG
Efciency (%) 85
Power Factor 0.70
Protection Class IP21S
Insulation Class F
Size (mm) 320 x 120 x 210
Weight (kg) 5.2
Warranty 3 years on power source
MMA/TIG - 170Amp DC Welding Machine
Small, Lightweight and Portable
Welds: Steels, Stainless, Cast Iron, Bronze, Copper
Overview
ARC170CT
Tig Option
ARC170CA
MMA Option
The ARC170 is an inverter-based welding machine produced using the latest in IGBT technology. Low cost and portable this
machine is reliable, robust and stacked with features that you can expect from a quality welder. The DC MMA welding capability
delivers a smooth and incredibly stable arc allowing easy welding with electrodes producing high quality welds including cast Iron,
stainless and low hydrogen. The ARC170 is equipped with DC Lift Arc function, connection of the 17V Tig torch allows quality DC Tig
welding of steel, stainless steel, bronze and copper. The Lift Arc function is superb and delivers perfect arc ignition every time without any
sticking of the tungsten electrode to the work piece, a remarkably smooth stable arc produces high quality Tig welds. The ARC170 is an
exceptional machine that is suitable for a wide range of applications including light industrial use, site welding, farming, along with repair and
maintenance applications. The Arc170 is packaged in a tough PVC carry case with your choice of MMA option accessories or
MMA/TIG option accessories. The ARC170 gives you the best of both worlds– great portability, with the power to get the job done.
Built to our specication and manufactured in compliance to AS/NZ60974.1
Features
• Latest IGBT inverter technology
• MMA
(stick electrode welding)
• Hot start (improves electrode starting)
• Arc Force (boosts current to prevent electrode extinguishing)
• Excellent arc stability with all electrodes
• DC TIG
• Lift Arc ignition
(prevents tungsten sticking during arc ignition)
• Ultra smooth DC TIG welding current
• Thermal overload protection
• IP21S rating for environmental/safety protection
• Generator compatible
(recommend 7.0KVA minimum)
• Tolerant to variable power supplies
KUMJR170DC
YEARS Warranty
(Power Source)
3
Certified - AS/NZ60974.1
8
Amperage Control
Dial
MMA /TIG Selector
Switch
Negative Output
Terminal
Positive Output
Terminal
Primary Power LED
Thermal Alarm LED
Primary Input
Power Lead
On /Off Power Switch
Rear Machine Layout Description
FRONT MACHINE LAYOUT DESCRIPTION
9
INSTALLATION SET UP FOR MMA (STICK) WELDING WITH ARC140-170
Please install the machine strictly according to the following steps.
The protection class of this machine is IP21S, so avoid using it in rain.
Connection of Input Cables
Primary input cable is supplied with this welding equipment. Connect the primary input cable with power
supply of required input voltage. Refer to data plate on machine for Input voltage, IMAX and IEFF.
(1) Turn the power source on and select the MMA function with the Tig/MMA selector switch.
(2) Connection of Output Cables: Various electrodes require a different polarity for optimum results refer
to the electrode manufacturers information for the correct polarity. Most GP electrodes are Electrode
connected to output socket, Earth Connected to the output socket
(3) Set the welding current relevant to the electrode type and size being used as recommended by the
electrode manufacturer.
(4) Place the electrode into the electrode holder and clamp tight
(5) Strike the electrode on the work to create the arc and hold the electrode steady to maintain the arc
(6) Hold the electrode slightly above the work piece to maintain the arc while travelling at an even speed
to create and even weld deposition
(7) To nish the weld, break the arc by quickly snapping the electrode away from the work piece.
(8) Wait for the weld to cool and carefully chip away the slag to reveal the weld metal underneath.
(2) Connect earth
lead to
(1) Set Tig/MMA selector
switch to MMA
(2) Connect the electrode
lead to
(3) Set the welding current using the amperage
control dial.
(6) Hold the electrode slightly above the work
maintaining the arc while travelling at an even
speed.
(4) Place the electrode into the electrode holder
and clamp tight.
(7) To nish the weld, break the arc by quickly
snapping the electrode away from the work
piece.
(5) Strike the electrode against the workpiece to
create and arc and hold the electrode steady to
maintain the arc.
(8) Wait for the weld to cool and carefully chip
away the slag to reveal the weld metal below.
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