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Keep the welding cables, earth clamp and electrode holder in good condition. Failure to do this can result in 

poor welding quality, which could be dangerous in structural situations.

Prior to use, check for breakage of parts and any other conditions that may affect operation of the welder.  

Any part of the welder that is damaged should be carefully checked to determine whether it will perform its 

intended function whilst being safe for the operator.  Any part that is damaged should be properly repaired, or 

replaced by an authorised service centre.

 

IMPROPER USE

It is hazardous to use the welding machine for any work other than that for which it was designed e.g. do not 

use welder for thawing pipes.

 

HANDLING 

Ensure the handle is correctly fitted. As welding machines can be heavy, always use safe lifting practices when 

lifting.

 

POSITION AND HANDLING

To reduce risk of the machine being unstable / danger of overturning, position the welding machine on a  

horizontal surface that is able to support the machine weight. Operators MUST NOT BE ALLOWED to weld in 

raised positions unless safety platforms are used.

WARNING

The user of this welder is responsible for their own safety and the safety of others. It is important to read,  

understand and respect the contents of this user guide. When using this welder, basic safety precautions, 

including those in the following sections must be followed to reduce the risk of fire, electric shock and personal 

injury. Ensure that you have read and understood all of these instructions before using this welder.  

Persons who are not familiar with this user guide should not use this welder. Keep this booklet in a safe place 

for future reference. 

 

TRAINING

The operator should be properly trained to use the welding machine safely and should be informed about the 

risks relating to arc welding procedures. This user guide does not attempt to cover welding technique. Training 

should be sought from qualified / experienced personnel on this aspect, especially for any welds requiring a high 

level of integrity for safety.

 

SERIOUS FIRE RISK

The welding process produces sparks, droplets of fused metal, metal projectiles and fumes.  

This constitutes a serious fire risk. Ensure that the area in which welding will be undertaken is clear of all  

Inflammable materials. It is also advisable to have a fire extinguisher, and a welding blanket on hand to protect 

work surfaces. 

MACHINE CARE / SAFETY 

SAFETY INSTRUCTIONS

Summary of Contents for ST 141X

Page 1: ...DC INVERTER MANUAL ...

Page 2: ...repared accurately however errors and omissions are excepted BOSSWELD is a trademark of Dynaweld Industrial Supplies Pty Ltd M MIG Simple to learn MIG Wire is fed through the gun to create the weld pool Gas or flux prevents oxidisation in the weld Weld with or without gas Point and pull the trigger Great for maintenance small projects automotive repairs METAL TYPES Mild steel stainless steel alumi...

Page 3: ...E CARE SAFETY INSTRUCTIONS 7 WORK AREA SAFETY 8 MAINTENANCE DISPOSAL 9 FRONT REAR PANEL LAYOUT 10 STICK MMA WELDING SETUP 11 12 GENERAL MMA WELDING 13 14 TIG WELDING SETUP 15 16 LIFT ARC START 17 TIG TORCH SPARES 18 GENERAL TIG WELDING 19 20 TROUBLE SHOOTING 21 ...

Page 4: ...tenance care and cleaning 5 Environmental factors such as usage in temperatures exceeding 40 degrees above 1000mt sea level rain water excessive damp cold or humid conditions 6 Improper setup or installation 7 Use on Incorrect voltage or non authorised electrical connections and plugs 8 Use of non standard parts 9 Repair case opening tampering with modifications to any part of the item by non auth...

Page 5: ...ELD ST 141X ST 181X Inverter DC MMA Arc Welder Box Contents 1 BOSSWELD ST 141X or ST 181X Inverter DC MMA Arc Welder 2 Electrode Holder Lead 3 Welding Earth Lead 4 Carry Strap 5 Owners Manual not shown 1 2 4 3 ...

Page 6: ... necessary or non reflecting welding curtain Do not let children or animals have access to the welding equipment or to the work area SWITCHING OFF When the operator has finished welding they must switch the welder off DO NOT put the electrode holder down with the welder switched ON When leaving the welder unattended move the ON OFF switch to the OFF position and disconnect the welder from the elec...

Page 7: ...G The user of this welder is responsible for their own safety and the safety of others It is important to read understand and respect the contents of this user guide When using this welder basic safety precautions including those in the following sections must be followed to reduce the risk of fire electric shock and personal injury Ensure that you have read and understood all of these instruction...

Page 8: ...e used in conjunction with a residual current device RCD with rated residual current of 30MA or less In general the use of extension leads should be avoided If used however ensure that the extension lead is used with the welder is of a suitable current rating and heavy duty in nature that MUST have an earth connection If using the welder outdoors ensure that the extension lead is suitable for outd...

Page 9: ...TRANSPORT Store the welder and accessories out of children s reach in a dry place If possible store the welder in the original packaging The appliance must unconditionally be secured against falling or rolling over during transport DISPOSING OF THE PACKAGING Recycling packaging reduces the need for landfill and raw materials Reuse of the recycled material decreases pollution in the environment Ple...

Page 10: ...tch 5 Current Adjustment Knob 6 Positive Output Connection Socket 7 Negative Output Connection Socket REAR PANEL 8 Mains Power Switch 10Amp ST 141X Mains Power Switch 15Amp ST 181X 9 Cooling Fan 10 240V AC Mains Power Cord 2 3 4 5 1 6 7 8 10 9 Note Warranty will be void if 15Amp plug is ground down ...

Page 11: ...o work piece ensuring that the clamp makes good contact with bare metal Assemble Arc and Earth leads into the welding terminals depending on requirements of electrodes Refer to your electrode packet for polarity and current requirements DCEP Negative Polarity most common application Earth clamp connector into the negative terminal Electrode holder connector into the positive terminal DCEN Straight...

Page 12: ...odel STARTING THE ARC SCRATCH The welding arc is obtained when the welding current is forced across a gap between the electrode tip and the workpiece A welder must be able to strike and establish the correct arc easily and quickly The scratching method is easier for beginners The elec trode is moved across the plate inclined at an angle as you would strike a match As the electrode scratches the pl...

Page 13: ...er section will need a larger diameter electrode The table below shows the maximum size of electrodes for average thicknesses of section based on General Purpose 6013 Electrode TIPS Keep the welding current as low as possible for the job at hand to maintain the best duty cycle from your welding machine prevent the flux from burning and make slag removal easier To break the circuit withdraw the ele...

Page 14: ... example if welding Mild Steel then select a Mild Steel General Purpose Electrode Electrodes are identified by a universal numbering system AWS Type code Electrodes are often packed in sealed packaging to keep moisture out However if a pack has been opened or damaged it is essential that the electrodes are redried according to the manufacturer s instructions ARC FORCE Also called Dig and Arc Contr...

Page 15: ...ion 1 Connect the Argon Gas Regulator to the Gas bottle and connect the Gas Hose to the Gas Input socket from the torch to the Regulator Ensure the Gas regulator is in the off position 4 Install the TIG Torch to the machine by connecting the Dinse Connector to the Negative Output Connection Socket the Gas hose to the regulator and the TIG Torch Control Socket and screw the nut up firmly 2 Set up t...

Page 16: ...ator and set gas flow to between 10 15 L min depending on your welding environment Turn the valve on the torch head to start the flow of gas Remember to turn it off when finished welding 8 9 IMPORTANT We strongly recommend that you check for gas leakage prior to operation of your machine We recommend that you close the cylinder valve when the machine is not in use BOSSWELD authorised representativ...

Page 17: ...that the Tungsten Electrode touch es the work piece Press the button on the TIG torch Now rotate the Gas Cup in the reverse direction to lift the Tungsten electrode from the work piece to create the arc 3 2 4 Lay the outside edge of the Gas Cup on the work piece with the Tungsten Electrode 1 2mm from the work piece 1 ...

Page 18: ... 9510N31 Collet Body 1 6mm 9510N32 Collet Body 2 4mm 9510N28 Collet Body 3 2mm 95406488 Collet Body 4 0mm PART NO DESCRIPTION 9510N50 Alumin Cup Size 4 9510N49 Alumin Cup Size 5 9510N48 Alumin Cup Size 6 9510N47 Alumin Cup Size 7 9510N46 Alumin Cup Size 8 9510N45 Alumin Cup Size 10 9510N44 Alumin Cup Size 12 PART NO DESCRIPTION 9545V24 Gas Lens Collet 1 0mm 9545V25 Gas Lens Collet 1 6mm 9545V26 Ga...

Page 19: ...nation For this reason AC is used when welding materials with a tenacious surface oxide film such as aluminium ARC STARTING The welding arc can be started by scratching the surface forming a short circuit It is only when the short circuit is broken that the main welding current will flow However there is a risk that the electrode may stick to the surface and cause a tungsten inclusion in the weld ...

Page 20: ...in all industrial sectors but is especially suitable for high quality welding In manual welding the relatively small arc is ideal for thin sheet material or controlled penetration in the root run of pipe welds Because deposition rate can be quite low using a separate filler rod MMA or MIG may be preferable for thicker material and for fill passes in thick wall pipe welds TIG is also widely applied...

Page 21: ...0 minutes 1 Check mains voltage is constant 2 Check the welding cable connectors are tight in the sockets 3 Check the earth clamp connection to the work piece 4 Check the welding leads are not reversed 1 Welding clamp rated current is too small replace with larger size welding clamp 1 Output polarity is incorrect reverse output connector TROUBLE SHOOTING OPERATIONAL ENVIRONMENT Height above sea le...

Page 22: ...86 Bossweld Professional Chipping Hammer 400 Grams CODE DESCRIPTION 500080 Bossweld 4 Row Engineer Wire Brush Wood Handle Handy Pack Electrodes Handy packs are the ideal solution for small welding jobs and repairs Available in 4 diameter sizes including 1 6mm 2 0mm 2 6mm and 3 2mm Handy packs ranges include General Purpose Stainless Steel Dissimilar Metals Low Hydrogen and Cast Iron CODE DESCRIPTI...

Page 23: ...cket has heavy duty sewing Features Heavy duty chrome leather Double studs for extra protection Several sizes available Heavy duty sewing Bossweld Leather Welding Blanket Chrome leather welding blanket Ideally suited to covering items to protect against weld spatter Commonly used in panel industry Features Heavy duty chrome leather blanket Excellent heat resistance Several sizes available For the ...

Page 24: ...OTHER PRODUCTS IN OUR RANGE ELECTRODES TIG RODS WELDING HELMETS WELDING MACHINES TORCH SPARE PARTS WELDING ACCESSORIES MIG WIRE GAS EQUIPMENT WELDING SAFETY MIG TORCHES TIG TORCHES WELDING CABLE ...

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