ARC/TIG INVERTER MODEL NO: AT131 PART NO: 6012230 OPERATION & MAINTENANCE INSTRUCTIONS LS0309
INTRODUCTION Thank you for purchasing this CLARKE ARC/TIG INVERTER. Before attempting to use this product, please read this manual thoroughly and follow the instructions carefully. In doing so you will ensure the safety of yourself and that of others around you, and you can look forward to your purchase giving you long and satisfactory service. GUARANTEE This product is guaranteed against faulty manufacture for a period of 12 months from the date of purchase.
TABLE OF CONTENTS INTRODUCTION................................................................ 2 GUARANTEE ..................................................................... 2 PARTS AND SERVICING ................................................... 2 TABLE OF CONTENTS........................................................ 3 ELECTROMAGNETIC INTERFERENCE (EMC) .................... 4 SAFETY PRECAUTIONS ..................................................... 6 PREPARATION OF THE WORKING AREA ..................
ELECTROMAGNETIC INTERFERENCE (EMC) Whilst this unit complies with EMC regulations, the user is responsible for installing and using the welding equipment according to the manufacturers instructions. If electromagnetic disturbances are detected then it shall be the responsibility of the user of the welding equipment to resolve the situation. In some cases this remedial action may be as simple as earthing the welding circuit, see ‘Note’.
2. METHODS OF REDUCING EMISSIONS 2.1 MAINS SUPPLY Welding equipment should be connected to the mains supply according to the manufacturers recommendations. If interference occurs, it may be necessary to take additional precautions such as filtering of the mains supply. Consideration should be given to shielding the supply cable of permanently installed welding equipment, in metallic conduit or equivalent. Shielding should be electrically continuous throughout its length.
2.6 SCREENING AND SHIELDING Selective screening and shielding of other cables and equipment in the surrounding area may alleviate problems of interference. Screening of the entire welding installation may be considered for special applications. SAFETY PRECAUTIONS WARNING: AS WITH ALL MACHINERY, THERE ARE CERTAIN HAZARDS INVOLVED WITH THEIR OPERATION AND USE. EXERCISING RESPECT AND CAUTION WILL CONSIDERABLY LESSEN THE RISK OF PERSONAL INJURY.
confined space only while it is being ventilated and, if necessary, while wearing an air-supplied respirator. Vapours from chlorinated solvents can be decomposed by the heat of the arc (or flame) to form PHOSGENE, a highly toxic gas, and other lung and eye irritating products. The ultraviolet (radiant) energy of the arc can also decompose trichloroethylene and perchloroethylene vapours to form phosgene.
flammable or toxic vapours when heated, must never be welded on or cut, unless container has first been cleaned. 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. Water filling just below working level may substitute for inerting.
you wear flash goggles with side shields under the helmet, to give some protection to the eyes should the helmet not be lowered over the face before an arc is struck. Looking at an arc momentarily with unprotected eyes (particularly a high intensity gas-shielded arc) can cause a retinal burn that may leave a permanent dark area in the field of vision. Before welding whilst wearing contact lenses, seek advice from your optician.
body surface electrical resistance, enabling dangerous and possibly lethal currents to flow through the body. 1) EARTHING THE EQUIPMENT When arc welding equipment is earthed according to the National Electrical Code, and the work is earthed, a voltage may exist between the electrode and any conducting object. Examples of conducting objects include, but are not limited to, buildings, electrical tools, work benches, welding power source cases, workpieces, etc.
processes may not be equipped with welding power output on/off control devices. With such equipment the electrode is electrically LIVE when the power switch is turned ON. Never touch the electrode unless the welding power source is off. 7) SAFETY DEVICES Safety devices such as interlocks and circuit breakers should not be disconnected or shunted out.
SAFETY PRECAUTIONS FOR ARC/TIG WELDING ALWAYS ensure that there is full free air circulating around the outer casing of the machine, and that the louvres are unobstructed. ALWAYS use a proper welding face shield or helmet, with suitable filter lenses. Proper gloves and working clothes should be worn at all times. ALWAYS check that the pressure regulator and gauges are working correctly. DO NOT lubricate the regulator. ALWAYS use the correct regulator.
SYMBOLS The following symbols will appear on your welder Direct Current (DC) Line connection Single Phase Static Frequency ConverterTransformer-Rectifier Shielded Metal Arc Weilding (SMAW) Constant current Read instructions before using the welder.
PRINCIPLES OF OPERATION The ARC/TIG welder, as its name suggests, is designed to be used for both Metal ARC/ TIG welding. To accomplish this, two sets of welding leads are required, one for each method employed. Tig welding leads are not supplied with the machine. These are readily available from your CLARKE dealer. 1. ARC WELDING Shielded Metal Arc welding employs the heat of the arc to melt the base metal and the tip of a flux covered electrode.
2. TIG WELDING TIG welding is primarily a DC current process, but can also utilise AC, usually for very thin materials and when welding Aluminium or other non ferrous metals. It uses a non-consumable tungsten (or tungsten alloy) electrode, held in a torch. Shielding gas (100% Argon), is fed through the torch to protect a. the electrode, b. molten weld pool, and c. solidifying weld metal from contamination by the atmosphere.
ELECTRICAL CONNECTIONS Connect the mains lead to a 230 Volt (50Hz) single phase 32 amp electrical supply, through a suitably fused isolator. WARNING: DO NOT CONNECT TO A DOMESTIC SYSTEM VIA A 13 AMP PLUG. WARNING: THIS APPLIANCE MUST BE EARTHED IMPORTANT: The wires in the mains lead are coloured in accordance with the following code: Green & Yellow Blue Brown - Earth Neutral Live • Connect GREEN & YELLOW cord to terminal marked with a letter “E” or Earth symbol “ ” or coloured GREEN or GREEN & YELLOW.
WELDING TECHNIQUES ARC WELDING Arc welding cables are supplied with this machine. To prepare the unit for ARC welding, it is important that you follow the procedure below. 1. With the ON/OFF switch, located on the rear panel, in the OFF position, connect the welding leads as follows: Fig 1 • Welding Electrode lead to the +ve terminal. • Work Clamp lead to the -ve terminal. 2. Attach the work clamp to the workpiece - as close as possible to the area being welded.
4. Switch ON using the switch located on the rear panel. The green light on the front panel should glow, indicating the machine is ON. NOTE: If the machine stops at any time and the amber light comes ON the thermal overload has intervened. 5. The most difficult aspect of the arc welding process, particularly for beginners, is that of striking an arc. We strongly recommend that you practice on some pieces of scrap metal to get the feel of the operation, before you start on an actual welding job. 6.
To prepare the unit for TIG welding, it is important that you adopt the following procedure. 1. Plug the work return lead in to the +ve terminal, and secure the work clamp to the workpiece. For good contact, the work clamp must be attached to clean bare metal. Clean with a wire brush where necessary. 2. Plug the torch lead to the -ve terminal. 3. Screw the pressure regulator on to the gas bottle tightly, and attach the gas hose to the inlet connector securely, with a hose clip.
Scratch the tip of the electrode on soon as an arc develops, quickly withdraw the electrode to maintain a gap of approx. 3-4 mm, and proceed to weld. (See notes below). To stop welding, simply remove the torch from the workpiece. This method is referred to as ‘Scratch Arc’. REMEMBER to turn OFF the gas immediately you finish welding. NOTE: To avoid a visible strike mark on the surface of the workpiece, it is advisable to strike the arc in the joint, where the mark will be concealed by the weld.
MAINTENANCE The ARC/TIG Inverter, requires very little maintenance other than the guidelines shown below. Under normal working conditions removing the covers and cleaning with dry compressed air at reduced pressure once a year will be quite sufficient. Cleaning at more frequent intervals is advisable if the unit is operating in a dusty and dirty environment. 1. Keep the louvres clean to avoid a build up of dirt and oxides inside the machine, which can reduce machine output. 2.
SPECIFICATIONS Power supply 230V 50Hz 1Ph Maximum Input Current 25 Amps Open Circuit (No Load) Voltage 85 V Protection Class IP21 Min/Max. Welding Current 5 / 130 A Useable Electrodes Diameter 1.5 - 4.0 mm Weight 5.5 kg Part No. 6012230 Duty Cycle Welding Current 40 % 130 Amps 60 % 120 Amps 100 % 80 Amps eg. You may weld at 130 Amps for 4 minutes (40%) in a 10 min. cycle, or for 6 minutes at 120 Amps.
EXPLODED DIAGRAM & PARTS LIST NO PART NO NO DESCRIPTION 1 Steel cover DESCRIPTION QTY 1 SWAT13101 11 Transformer 2 Belt 1 SWAT13102 12 3 Potentiometer 1 SWAT13103 13 4 Dial button 1 SWAT13104 5 LED 2 6 Quick connector 7 Inductance 8 QTY PART NO 1 SWAT13111 Heat sink 3 SWAT13112 4.2x9.
WIRING DIAGRAM 24
DECLARATION OF CONFORMITY DECLARATION OF CONFORMITY This is an important document and should be retained. We declare that this product complies with the following directives: 89/336/EEC Electromagnetic Compatibility directive, (amended 2004/108/EC). 73/23/EEC Low Voltage Equipment directive ( amended 93/68/EEC).
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