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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 confined 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 fit-

ted with a proper shade of filter (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 flash and glare; warn others not to 
watch the arc.

4.   Wear  protective  clothing  made  from  durable, 

flame-resistant  material  (wool  and  leather)  and 
foot protection.

5.   Never wear contact lenses while welding.

Summary of Contents for WT140ARC

Page 1: ...OPERATING INSTRUCTIONS WT140ARC 140A INVERTER ARC WELDER www weldtech net nz ...

Page 2: ...f innovative power equipment solutions to a wide range of industries across New Zealand and Australia Key product categories are welding equipment air compressors power generators and cleaning equipment Euroquip s slogan is empowering industries find out more about the advantage Euroquip brings at www euroquip co nz Providing exceptional product support is a key component of Euroquip s market lead...

Page 3: ...w 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 BasicWelding Guide 7 Troubleshooting 13 Knowledge Resources 14 Safety 14 Warranty 19 ...

Page 4: ...hnology 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...

Page 5: ...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 sufficiently 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 ...

Page 6: ... to this If in doubt check the electrode specificationsorconsulttheelectrode 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 ...

Page 7: ... 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 t...

Page 8: ...s 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 first 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 tha...

Page 9: ...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 But...

Page 10: ...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 alo...

Page 11: ... 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 filled the back is either machined ground or gouged out to remove slag which may be trapped in the root and to prepare a suitab...

Page 12: ...ding Set up a specimen for overhead welding by first 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 t...

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

Page 14: ...nd 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 off before leaving the welder unattended 5 Do not touch live electrical parts Wear dry in sulating gloves Do not ...

Page 15: ...ng 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 specific hazards in the work area DANGER Always wear AS NZS compliant safety glasses and full face shield fitted with appropriate filter shade number Refer...

Page 16: ...pheres containing dangerously reactive or flam mable gases vapours liquids and dust Provide adequate ventilation in work areas to prevent ac cumulation of flammable 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 flammable or explosive vapours Clean and purge containers before applying he...

Page 17: ...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 fit ted with a proper shade of filter 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 scre...

Page 18: ...ther electrical circuits 4 Never allow a welding electrode to touch any cylinder 5 Use appropriate shielding gas regulators hoses and fittings designed for the specific 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 ...

Page 19: ... 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 modifica 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 a...

Page 20: ...s 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 info euroquip co nz ...

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