WELDING INDUSTRIES Weldmatic 355, CP120-2 Operator's Manual

WELDING INDUSTRIES OF AUSTRALIA
a division of Welding Industries Ltd
ABN 18 004 547 111
Telephone 1300 300 884
Facsimile 1300 301 884
Email: Info@welding.com.au
www.welding.com.au
Operators Manual
Weldmatic 355 MIG welder
Model No. CP120-2, Iss A
05/07
CP120-40 Rev B
Weldmatic 355 Operators Manual
2 Model No. CP120-2, Iss A 05/07
Quality, Reliability, Performance
Weldmatic 355Operators Manual
Model No. CP120-2, Iss A 05/07 3
Quality, Reliability, Performance
Contents
Section General Information Page
Safe Practices 4
1 Introduction 6
2 Receiving 6
3 Specifications 6
4 Power Source Controls 7
5 Installation 8
6 Normal Welding Sequence 9
7 Basic Welding Information 10
8 General Maintenance 11
9 Trouble Shooting 12
10 Circuit Diagram 13
11 Assembly and Parts Lists 14
12 Warranty information 16
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Safe Practices When Using Welding Equipment
These notes are provided in the interests of improving operator safety. They should be considered only as a basic guide to Safe Working Habits. A full list of Standards pertaining to industry is available from the Standards Association of Australia, also various State Electricity Authorities, Departments of Labour and Industry or Mines Department and other Local Health or Safety Inspection Authorities may have additional requirements. Australian Standard AS1674.2 provides a comprehensive guide to safe practices in welding.
Eye Protection
NEVER LOOK AT AN ARC WITHOUT PROTECTION. Wear a helmet with safety
goggles or glasses with side shields underneath, with appropriate filter lenses protected by clear cover lens. This is a MUST for welding, cutting, and chipping to protect the eyes from radiant energy and flying metal. Replace the cover lens when broken, pitted, or spattered.
Recommended Shade Filter Lens
Amps TIG MMAW MIG
Pulsed
MIG
0-100 10 9 10 12-13 100-150 11 10 10 12-13 150-200
12 10-11 11-12 12-13
200-300
13 11 12-13 12-13
300-400
14 12 13 14
400-500
13 14 14
500 + 14 14
Burn Protection
The welding arc is intense and visibly bright. Its radiation can damage eyes, penetrate light­weight clothing, reflect from light-coloured surfaces, and burn the skin and eyes. Burns resulting from gas-shielded arcs resemble acute sunburn, but can be more severe and painful.
Wear protective clothing - leather or heat resistant gloves, hat, and safety-toe boots. Button shirt collar and pocket flaps, and wear cuffless trousers to avoid entry of sparks and slag.
Avoid oily or greasy clothing. A spark may ignite them. Hot metal such as electrode stubs and work pieces should never be handled without gloves.
Ear plugs should be worn when welding in overhead positions or in a confined space. A hard hat should be worn when others are working overhead.
Flammable hair preparations should not be used by persons intending to weld or cut.
Read First
The information contained in this manual is set out to enable you to properly maintain your new equipment and ensure that you obtain maximum operating efficiency.
Please ensure that this information is kept in a safe place for ready reference when required at any future time.
When ordering spare parts, please quote the model and serial number of the power source and part number of the item required. All relevant numbers are shown in lists contained in this manual. Failure to supply this information may result in unnecessary delays in supplying the correct parts.
Safety
Before this equipment is put into operation, please read the Safe Practices section of this manual. This will help to avoid possible injury due to misuse or improper welding applications.
Plastic Handle on Power Source
Please note that the handle fitted to the Weldmatic 355 power source is intended for moving the equipment by hand only.
DO NOT use this handle for suspending or mounting the power source in any other manner.
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Toxic Fumes
Adequate ventilation with air is essential. Severe discomfort, illness or death can result from fumes, vapours, heat, or oxygen depletion that welding or cutting may produce. NEVER ventilate with oxygen.
Lead, cadmium, zinc, mercury, and beryllium bearing and similar materials when welded or cut may produce harmful concentrations of toxic fumes. Adequate local exhaust ventilation must be used, or each person in the area as well as the operator must wear an air-supplied respirator. For beryllium, both must be used.
Metals coated with or containing materials that emit fumes should not be heated unless coating is removed from the work surface, the area is well ventilated, or the operator wears an air-supplied respirator.
Work in a confined space only while it is being ventilated and, if necessary, while wearing air­supplied respirator.
Vapours from chlorinated solvents can be decomposed by the heat of the arc (or flame) to form phosgene, a highly toxic gas, and lung and eye irritating products. The ultra-violet (radiant) energy of the arc can also decompose trichlorethylene and perchlorethylene vapours to form phosgene. Do not weld or cut where solvent vapours can be drawn into the welding or cutting atmosphere or where the radiant energy can penetrate to atmospheres containing even minute amounts of trichlorethylene or percholorethylene.
Fire and Explosion Prevention
Be aware that flying sparks or falling slag can pass through cracks, along pipes, through windows or doors, and through wall or floor openings, out of sight of the operator. Sparks and slag can travel up to 10 metres from the arc.
Keep equipment clean and operable, free of oil, grease, and (in electrical parts) of metallic particles that can cause short circuits.
If combustibles are present in the work area, do NOT weld or cut. Move the work if practicable, to an area free of combustibles. Avoid paint spray rooms, dip tanks, storage areas, ventilators. If the work can not be moved, move combustibles at least 10 metres away out of reach of sparks and heat; or protect against ignition with suitable and snug-fitting fire­resistant covers or shields.
Walls touching combustibles on opposite sides should not be welded on or cut. Walls, ceilings, and floor near work should be protected by heat-resistant covers or shields.
A person acting as Fire Watcher must be standing by with suitable fire extinguishing equipment during and for some time after welding or cutting if;
• Combustibles (including building construction) are within 10 metres.
• Combustibles are further than 10 metres but can be ignited by sparks.
• Openings (concealed or visible) in floors or walls within 10 metres may expose combustibles to sparks.
• Combustibles adjacent to walls, ceilings, roofs, or metal partitions can be ignited by radiant or conducted heat.
After work is done, check that area is free of sparks, glowing embers, and flames.
A tank or drum which has contained combustibles can produce flammable vapours when heated. Such a container must never be welded on or cut, unless it has first been cleaned as described in AS.1674-2. This includes a thorough steam or caustic cleaning (or a solvent or water washing, depending on the combustible’s solubility), followed by purging and inerting with nitrogen or carbon dioxide, and using protective equipment as recommended in AS.1674-2. Water-filling just below working level may substitute for inerting.
Hollow castings or containers must be vented before welding or cutting. They can explode. Never weld or cut where the air may contain flammable dust, gas, or liquid vapours.
Shock Prevention
Exposed conductors or other bare metal in the welding circuit, or ungrounded electrically alive equipment can fatally shock a person whose body becomes a conductor. Ensure that the equipment is correctly connected and earthed. If unsure have the equipment installed by a qualified electrician. On mobile or portable equipment, regularly inspect condition of trailing power leads and connecting plugs. Repair or replace damaged leads.
Fully insulated electrode holders should be used. Do not use holders with protruding screws. Fully insulated lock-type connectors should be used to join welding cable lengths.
Terminals and other exposed parts of electrical units should have insulated knobs or covers secured before operation.
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1 Introduction
Gas Metal Arc Welding (G.M.A.W.) is an arc welding process where a consumable wire is fed by motor driven feed rolls to a welding gun, and where welding current is supplied from the welding power source. The welding arc is struck between the work piece and the end of the wire, which melts into the weld pool. The arc and the weld pool are both shielded by gas flow from the gun, or in the case of “self shielded” wires, by gases generated by the wire core.
The process is very versatile in that by selection of the correct wire composition, diameter and shielding gas, it can be used for applications ranging from sheet-metal to heavy plate, and metals ranging from carbon steel to aluminium alloys.
The Weldmatic 355 has been designed to be used with consumable wires in the range from
0.6mm to 1.2mm diameter. The smaller wire sizes are used when welding at lower currents, such as sheet-metal applications. Increasing the wire diameter permits higher welding currents to be selected.
A common application of G.M.A.W. is for welding Mild Steel. In this application, a Mild Steel solid consumable wire such as AUSTMIG ES6 is used with a shielding gas of Carbon Dioxide, or Argon mixed with Carbon Dioxide. Alternatively, Flux-cored consumable wires are available in both gas shielded, and ‘gasless’ self shielding types.
Stainless steel and Aluminium can be welded with G.M.A.W. using the correct consumable wire and shielding gas.
2 Receiving
Check the equipment received against the shipping invoice to make sure the shipment is complete and undamaged. If any damage has occurred in transit, please immediately notify your supplier.
The Weldmatic 355 power source package contains;
• Weldmatic 355 Power Source CP120-2
• (This) Operating Manual CP120-40.
3 Specifications
Power Source
Manufactured to Australian Standard AS1966.1. Rated to ISO 60974-1.
Primary Voltage
380/415 Vac, 50/60Hz
Rated Primary Current
15 Amps
Maximum Primary Current
24 Amps
Recommended Generator kVA
17.5 kVA
Rated Output @ 40oC
Duty cycle based on 10min cycle time 355 Amp, 32 V, 40% duty 225 Amp, 25.3 V, 100% duty
Welding Current
35-355 Amps
Open Circuit Voltage
18-44 V
Shipping weight
115 kg - Power source only 135 kg - Includes wirefeeder & leads
Mains Circuit Breaker Rating
20 Amps
Supply plug
20 Amp (415 V 3 phase) optional extra
Fitted Supply Cable
47/0.20 Four Core, Heavy Duty PVC
Cooling
Fan on demand, fan operates only as required to cool internal components
Insulation
Class H, 140°C Rise
Wirefeeder Circuit Breaker Rating
5 Amps
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4 Power Source Controls
Fig 1 Power Source Controls
1 Coarse Voltage, On/Off Control
This switch provides mains power ON/OFF and Coarse adjustment of the output welding voltage over three ranges.
2 Fine Voltage Control
This switch provides Fine adjustment of the output welding voltage over ten steps.
3 Positive Welding Output Terminal
4 Negative Welding Output Terminal
5 Gas Outlet
Connector for shielding gas hose from remote wirefeeder.
6 Wirefeeder Control Socket
Connector for control cable from remote wirefeeder.
7 Circuit Breaker
This circuit breaker protects the 30 Vac wirefeeder supply circuit.
Fig 1 Power Source Controls
1
2
4
3
7
6
5
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Fig 2 Positive Wire
Fig 3 Negative Wire
5 Installation
Connection to Electrical Mains Power Supply
Negative Wire
Some ‘self-shielded’ flux cored consumable wires are operated with the work piece Positive and the consumable wire Negative. Refer to the manufacturers data for the particular consumable wire to be used.
To setup for this condition, connect the ‘WORK’ lead plug into the (+) output socket on the Power Source, and the ‘WELDING’ lead from the wirefeeder into the (-) socket on the Power Source, as in Figure 3.
To wirefeeder
To work clamp
To wirefeeder
To work clamp
NOTE. All electrical work shall only be undertaken by a qualified electrician.
The Weldmatic 355 is supplied with a 5 metre 4 core 47/0.20 Heavy Duty PVC mains power supply cable. This cable should be correctly connected to a suitable 3 Phase plug top or fixed connection point.
The minimum capacity of the mains wiring and power outlet supplying a welder is selected according to the effective primary current of the machine. The effective primary current for a Weldmatic 355 is 15 Amps.
The minimum recommended mains circuit breaker rating for a Weldmatic 355 is 25 Amps. Note : Due to normal variations of sensitivity, the tripping time of some 25A circuit breakers may limit the duty cycle available from the Weldmatic 355. A higher rated circuit breaker can be selected, but the mains wiring capacity must be increased to suit.
The current rating of the mains cable depends on cable size and method of installation. Refer to AS/NZS 3008.1, Table 9.
If it becomes necessary to replace the mains flexible supply cable, use only cable with correct current rating. Access to the supply terminals is gained by removing the power source side panels.
The replacement cable must be fitted and retained in the same manner as the original.
Output Voltage Polarity
The design of the Weldmatic 355 allows selection of the output voltage polarity.
Positive Wire
G.M.A.W. with solid consumable wires is carried out with the work piece Negative and the welding wire Positive.
To setup for this condition, connect the ‘WORK’ lead plug into the (-) output socket on the Power Source, and the ‘WELDING’ lead from the wirefeeder into the (+) socket on the Power Source, as in Figure 2.
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6 Normal Welding Sequence
Weld Start
Closing the welding gun switch initiates this sequence of events:
• The gas valve is energised and gas flow commences and continues for any pre-gas time set
• The power source contactor function is initiated. Welding voltage is applied between the work piece and the consumable wire
• The wire drive motor is energised
• The wire touches the work piece, and the arc is established.
Weld End
Releasing the gun switch initiates this sequence of events:
• The wire drive motor is de-energised, and is dynamically braked to a stop
• After a short pre-set period, known as the ‘burn-back’ time, the Power-source contactor function is released. This period ensures that the consumable wire does not ‘freeze’ in the weld pool
• At the completion of any post-gas time set, the gas valve is de-energised and the flow of shielding gas ceases.
Fitting the gas cylinder
Place the gas cylinder on the tray at the rear of the welder. Retain the cylinder with the chain provided.
Fit the gas regulator to the cylinder. DO NOT apply grease or oil to these joints.
Fit the end of the gas inlet hose from the composite cable to the connector supplied with the gas regulator, and secure with the clamp also supplied.
Remote Wirefeeder
The remote wirefeeder is connected to the Weldmatic 355 power source via the composite cable interconnecting lead. Check all connections are firmly made to ensure good electrical contact, and to prevent gas leaks.
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If the voltage is too low the wire will stub and stutter, and there will not be a steady arc. If the voltage is too high the arc will be long with metal transfer occurring as a series of large droplets.
Important: Do not operate the Voltage Control switches during welding.
The weld setting should be chosen to suit the application and the thickness of the metal to be welded. It is important to check that the deposited weld provides sufficient strength to suit the application.
A “good” weld will have the characteristics illustrated in Figure 4. The weld has penetrated into the parent metal, fusing the root of the joint where the two plates meet, and the weld blends smoothly into the side walls.
A “bad” weld is shown in Figure 5. The weld has not penetrated the joint root, and there is poor side wall fusion. This lack of fusion would normally be corrected by increasing the arc voltage, or by increasing both wirefeed speed and arc voltage to achieve a higher current weld setting.
Fig 4 “Good” Weld
Fig 5 “Bad” Weld
7 Basic Welding Information
Choice of Shielding Gas
The choice of shielding gas is largely determined by the consumable wire to be used. Many proprietary shielding gas mixtures are available.
The recommended shielding gases for use with the Weldmatic 355 are:
• Mild Steel Argon + 5 to 25% Carbon Dioxide; 100% CO
2
• Aluminium Argon;
• Stainless Steel Argon + 1 to 2% Oxygen.
Consult your gas supplier if more specific information is required.
Shielding Gas Flow Rate
In G.M.A. welding, one function of the shielding gas is to protect the molten weld pool from the effects of oxygen in the atmosphere. Without this protection the weld deposit becomes ‘honeycombed’ in appearance, an effect which is described as weld porosity.
In draft-free conditions the gas flow rate required to give adequate protection is typically 10-12 litres/min. In situations where drafts cannot be avoided, it may be necessary to increase this rate up to 20 litres/min, and/or to provide screening of the work area.
Weld porosity can also be caused by air entering the gas stream through a damaged hose, loose gas connection, or from restriction in the nozzle, such as from excess build-up of spatter.
When welding aluminium, particular care must be taken with all aspects of shielding gas delivery and workpiece preparation in order to avoid weld porosity.
Establishing a Weld Setting
Once the consumable wire type, wire size and shielding gas have been chosen, the two variables that are adjusted in order to obtain a the desired weld setting are;
• Wirefeed speed,
• Welding arc voltage.
The wirefeed speed determines the welding current; increasing the speed increases the current, and decreasing it decreases current.
The selected wirefeed speed must be matched with sufficient arc voltage; a speed increase requires an increase of arc voltage.
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Gun Position
For “down hand” fillet welding, the gun is normally positioned as shown in Figure 6 below with the nozzle end pointing in the direction of travel.
Fig 6 Gun Position
Before removing the power source or wirefeeder covers, ENSURE that the equipment is disconnected from the mains power supply. When the equipment is energised LETHAL VOLTAGES are present on the electrical components enclosed in the power source.
8 General Maintenance
Dust
Care should be taken to prevent excessive build-up of dust and dirt within the welding power source. It is recommended that at regular intervals, according to the prevailing conditions, the equipment covers be removed and any accumulated dust be removed by the use of dry, low pressure compressed air, or a vacuum cleaner.
Wirefeed
In order to obtain the most satisfactory welding results from the G.M.A.W. process, the wirefeed must be smooth and constant. Most causes of erratic wirefeed can be cured by basic maintenance. Check the General Maintenance section of the Wirefeeder Operators Manual for more details.
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9 External Trouble Shooting
Circuit breaker trips instantly when mains voltage is applied
1 Check the rating of the mains supply circuit
breaker. The Weldmatic 355 should be supplied from a 20 Amp or larger circuit breaker.
Unsatisfactory Welding Performance and Results
Erratic arc characteristics caused by poor wirefeed
Erratic wirefeed is the MOST LIKELY cause of failure in all Gas Metal Arc Welding. It should therefore be the first point checked when problems occur.
1 Refer to the Wirefeeder Operators Manual
for wirefeed trouble shooting
2 Check if the consumable wire is slipping in
the drive rolls. Replace the feed roll if it is the incorrect size or is worn
3 Check that gun cable liner is not too
short and is fitted correctly. Refer to the wirefeeder Operators Manual for fitting instructions.
Constant poor arc characteristics
Check that the:
1 Correct polarity has been selected for work
and weld cables (refer page 8)
2 Shielding gas is correct for the consumable
wire in use (refer page 10)
3 Welding circuit is making good electrical
connection. Ensure that the work clamp is securely tightened onto the work piece so that good electrical contact is achieved
4 All connections in the external welding
circuit are clean and tight. Problems may show as hot spots
5 Work piece surface is not contaminated.
Water, oil, grease, galvanising, paint, or oxide layers can severely disturb the welding arc and result in a poor weld.
Porosity in weld caused by lack of shielding gas
1 Check that the correct gas flow rate has
been set (refer page 10)
2 Check for leaks in the gas hose. Replace if
leaking
3 Check for leaks in gun/cable assembly, eg.
fractured gas hose, broken or missing ‘O’ rings. Replace as required
4 Check the gun nozzle is free from spatter
and is firmly attached to the welding gun to ensure that no air is being drawn into the shielded area.
If the following checks do not identify the fault condition, the equipment should be returned to a WIA Service agent. Phone 1300 300 884 for details of your nearest service agent.
Power source has no output and no wirefeed when gun switch is closed :
Power light on wirefeeder is off
1 Check equipment is connected to a
functional mains power outlet. Test outlet using a known working appliance
2 Check the equipment is switched on, ie
‘Coarse’ switch is in position 1,2 or 3
3 Check the circuit breaker at the front of the
power source (press to reset)
4 Check the interconnecting lead is securely
plugged in at the welder and that the lead is not damaged.
Power light on wirefeeder is on
1 The gun switch circuit is incomplete.
• Check the gun switch for continuity with an ohm meter when the switch is pressed. Replace if faulty
• Check the 2 pin receptacles in the MIG gun adaptor are making contact with the mating pins from the gun end.
There is wirefeed but no output voltage when gun switch is closed:
1 Power source may have overheated.
• The Weldmatic 355 welding power source incorporates an in-built over­temperature thermostat which will trip if the welding load exceeds the operating duty cycle. The thermostat will reset automatically - do not switch the equipment off as the cooling fan will assist the resetting of the thermostat
• If problem persists after the cool down period, call your WIA service agent.
2 There may be broken wires in the control
cables between the power source and the wirefeeder.
Power source has low weld output
1 Check all electrical connections in the
welding current circuit, including weld cable, work clamp and gun/cable assembly.
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10 Circuit Diagrams - Power Source
Fig 7 Power Source Circuit Diagram
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Fig 8 Weldmatic 355 Power Source Assembly
11 Assembly and Parts List - Weldmatic 355 Power Source
712
711
716
717
22
19
7
2021
23
24
18
26
25
4
2
6
10
1
11
712
713
9
3
5
714
715
8
24
7
25
26
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Item # Part # Description Qty
1 WHL002 Wheel, Rubber, Castor 2
2 PAN001 Base 1
3 WHL003 Wheel, Rubber, Fixed 2
4 M0020 Ratchet Cap 1
5 E0024 Circuit Breaker, 5 Amp 1
6 PAN012 Side Panel 1
7 PAN015 Front Panel 1
8 PAN029 Side Panel 1
9 MZ200923 Plastic Moulding, Gun Holder / Cable Hanger 1
10 MZ208164 Plastic Moulding, Front Panel 1
11 CP43-0/8 Switch, Coarse, 1/Off/2/3 1
12 CP43-0/3 Switch, Fine, 10 Position 1
13 CX58 Socket, Dinse 2
14 CP15-0/14 Control Socket 1
15 LST020 Label Set 1
16 CP3-9/8 Thermostat 1
17 CP42-0/1 Rectifier 1
18 L0012N Control Transformer 1
19 IND005 Inductance Assembly 1
20 TFM006N Welding Transformer Assembly, Wired 1
CP104-16/2 Thermal Overload (included with welding transformer) 1
21 FAN005 Fan Assembly 1
22 PAN069 Back Panel 1
23 CP27-0/18 Contactor 1
24 PAN011 Lid Panel 1
26 TC265 5/8” UNF NIpple 1
27 TC266 5/8” UNF Nut 1
Not shown PWA007N Fan On Demand PCB 1
Not shown R0028 Thermistor 2
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12 Warranty Information
WIA Gold Shield 3 Year Warranty
WIA’s Limited Warranty shall not apply to:
1 Consumable components; such as contact
tips, cutting nozzles, contactors, brushes, relays or parts that fail due to normal wear.
2 Equipment that has been modified by any
party other than WIA, or equipment that has been improperly installed, improperly operated or misused based upon industry standards, or equipment which has not had reasonable and necessary maintenance, or equipment which has been used for operation outside of the specifications for the equipment.
WIA PRODUCTS ARE INTENDED FOR PURCHASE AND USE BY COMMERCIAL / INDUSTRIAL USERS AND PERSONS TRAINED AND EXPERIENCED IN THE USE AND MAINTENANCE OF WELDING EQUIPMENT.
In the event of a warranty claim covered by this warranty, the exclusive remedies shall be, at WIA’s option: (1) repair; or (2) replacement; or, where authorised in writing by WIA in appropriate cases, (3) the reasonable cost of repair or replacement by an authorised WIA service agent; or (4) payment of or credit for the purchase price (less reasonable depreciation based upon actual use) upon return of the goods at customer’s risk and expense.
WIA’s option of repair or replacement will be F. O. B. Factory at Melrose Park, Adelaide, or F. O. B. at a WIA authorised service facility as determined by WIA. Therefore no compensation or reimbursement for transportation costs of any kind will be allowed.
TO THE EXTENT PERMITTED BY LAW, THE REMEDIES PROVIDED HEREIN ARE THE SOLE AND EXCLUSIVE REMEDIES. IN NO EVENT SHALL WIA BE LIABLE FOR DIRECT, INDIRECT, SPECIAL, INCIDENTAL OR CONSEQUENTIAL DAMAGES (INCLUDING LOSS OF PROFIT), WHETHER BASED ON CONTRACT, TORT OR ANY OTHER LEGAL THEORY.
ANY EXPRESS WARRANTY NOT PROVIDED HEREIN AND ANY IMPLIED WARRANTY, GUARANTEE OR REPRESENTATION AS TO PERFORMANCE, AND ANY REMEDY FOR BREACH OF CONTRACT TORT OR ANY OTHER
LEGAL THEORY WHICH, BUT FOR THIS PROVISION, MIGHT ARISE BY IMPLICATION, OPERATION OF LAW, CUSTOM OF TRADE OR COURSE OF DEALING, INCLUDING ANY IMPLIED WARRANTY OF MERCHANTABILITY OR FITNESS FOR PARTICULAR PURPOSE, WITH RESPECT TO ANY AND ALL EQUIPMENT FURNISHED BY WIA IS EXCLUDED AND DISCLAIMED BY WIA.
Effective 1st March 2005
At WIA, we are serious about product quality.
Every new Weldmatic and Weldarc machine comes fully backed by the WIA ‘Gold Shield 3 Year Warranty’, covering parts and workmanship, so you can be guaranteed you’re buying reliability and performance.
This limited warranty supersedes all previous WIA (Welding Industries of Australia) warranties and is exclusive with no other guarantees or warranties expressed or implied.
Limited Warranty
Subject to the terms and conditions below, WIA warrants to its original retail purchaser that new WIA equipment sold after the effective date of this limited warranty is free of defects in material and workmanship at the time it is shipped by WIA.
THIS WARRANTY IS EXPRESSLY IN LIEU OF ALL OTHER WARRANTIES, EXPRESS OR IMPLIED, INCLUDING THE WARRANTIES OF MERCHANTABILITY AND FITNESS.
Within the warranty periods listed below, WIA will repair or replace any warranted parts or components that fail due to such defects in material or workmanship. WIA must be notified in writing within thirty (30) days of such defect or failure, at which time WIA will provide instructions on the warranty claim procedures to be followed.
WIA shall honour warranty claims on warranted equipment in the event of such a failure within the warranty time periods. All warranty time periods start on the date that the equipment was delivered to the original retail purchaser, or 18 months after the equipment date of manufacture, whichever is the earlier.
Parts and workmanship on Weldarc and Weldmatic equipment are covered for a period of 3 years (except for gas regulator, gun cable and consumables listed below.)
Items replaced under original warranty are warranted for the remainder of the original equipment warranty, or for a period of ninety (90) days, whichever is the greater.
Gas regulator and gun/cable assembly are warranted for 90 days.
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