Draper Expert 70052 Instructions Manual Download Page 1

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HIGH FREQUENCY

200A

TIG/MMA

ALUMINIUM WELDER

70052

These instructions accompanying the product are the original instructions. This document is part of the product,

keep it for the life of the product passing it on to any subsequent holder of the product. Read all these instructions

before assembling, operating or maintaining this product.
This manual has been compiled by Draper Tools describing the purpose for which the product has been designed,

and contains all the necessary information to ensure its correct and safe use. By following all the general safety

instructions contained in this manual, it will ensure both product and operator safety, together with longer life of the

product itself.
All photographs and drawings in this manual are supplied by Draper Tools to help illustrate the operation of the

product.
Whilst every effort has been made to ensure the accuracy of information contained in this manual, the Draper

Tools policy of continuous improvement determines the right to make modifications without prior warning.

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Summary of Contents for Expert 70052

Page 1: ...ch the product has been designed and contains all the necessary information to ensure its correct and safe use By following all the general safety instructions contained in this manual it will ensure both product and operator safety together with longer life of the product itself All photographs and drawings in this manual are supplied by Draper Tools to help illustrate the operation of the produc...

Page 2: ...death Caution Information that draws attention to the risk of damage to the product or surroundings 1 3 EXPLANATION OF SYMBOLS Warning Read the instruction manual Warning Wear suitable welding eye face protection Warning Wear ear defenders During grinding operations Warning Wear protective gloves Keep out of the reach of children Warning Danger of electric shock Danger of fire Danger of explosion ...

Page 3: ...unattended and remove the plug from the socket when not in use Do not use welding cables unsuitable for the amperage Ensure the earth clamp is adjacent to the weld seam secured to bare metal and when not in use is insulated for safety Keep all equipment well maintained The operator shall prevent gas cylinders in the vicinity of the workpiece from becoming part of the welding circuit Fumes Gases ca...

Page 4: ... eyes and impair vision infra red heat radiation can damage skin and eyes Such radiation can be direct or reflected from surfaces such as bright metals and light coloured objects Gas cylinders Gas cylinders should be located or secured so that they cannot be knocked over Shield gas containers can explode if damaged Take care when handling Ensure gas cylinders are shut off when not in use and betwe...

Page 5: ...e product The packaging material should be retained during the warranty period in case the product needs to be returned for repair Warning Some of the packaging materials may be harmful to children Do not leave any of these materials in reach of children If any of the packaging is to be thrown away make sure they are disposed of correctly according to local regulations 5 TECHNICAL DESCRIPTION 5 1 ...

Page 6: ...clear Equally ensure no debris can be drawn into the machine 6 3 CONNECTION TO THE POWER SUPPLY Make sure the power supply information on the product s rating plate is compatible with the power supply you intend to connect it to A suitable plug must be fitted by a qualified electrician This product s wiring has insulation stripped in preparation for wiring a 32A plug not supplied It is designed fo...

Page 7: ...ver as a general rule for DC output negative electrode machines a 1 6mm thorium oxide tungsten electrode will suffice Tungsten Ø Amp Range 1 2mm 70A 1 6mm 70 140A 2 4mm 140 250A 3 2mm 240A The selection of the ceramic shroud is based on the tungsten electrode and should be 4 to 6 times the tungstens diameter For example a 1 6mm tungsten could be used with a No 4 6 4mm ceramic shroud a No 5 8 0mm o...

Page 8: ... hose to the TIG torch To attach the TIG torch 7 to the front panel coupling marked GAS 4 plug in and twist to lock Attach the earth clamp 8 into the coupling marked 5 plug in and twist to lock To connect the torch trigger cable 7 1 fit the 2 pin plug into the corresponding connection port marked 2 Secure the outer ring by screwing it onto the threaded outside part of the trigger connection port C...

Page 9: ...pedal controls the level of current incrementally until the maximum level set by the dial is reached 7 FIG 7 4 MMA MANUAL METAL ARC SETUP FIG 8 To attach the electrode holder 9 to the front panel insert the plug into the connection port marked 1 and twist to lock Attach the earth clamp 8 into the connection port marked 5 plug in and twist to lock 8 FIG 7 5 MMA ARC WELDING FILLER ROD ELECTRODE SELE...

Page 10: ...and the consumable electrode rod melts the parent metal and the filler metal in a weld pool The electrode s flux coating reacts during this process and develops into a shield gas protecting the weld bead Part of this reaction leaves a trail of slag which solidifies behind the weld pool protecting the weld as it cools The most common varieties of electrodes are cellulosic rutile and basic the latte...

Page 11: ...ndicating light no load voltage indicator light M Alarm light Welding machine overheat over current alarm light 7 7 FUNCTION PARAMETERS Function Description Adjust Range Default value Pre flow The time of gas prior to welding 0 10 S 0 1 S Hot start Hot start current 5 200A 100A Arc start current The preset starting current is adjusted when arc closing is controlled 5 200A 40 A Slope up When arc cl...

Page 12: ...om the workpiece to the tungsten needle to the negative current current flowing from the tungsten needle to the workpiece in other words to act in one cycle If the positive current decreases increases at a given time the negative current increases decreases accordingly The positive current is mainly used for welding while the negative current is mainly used for cleaning the oxide film of the workp...

Page 13: ...ctrode size Secure the earth clamp to a clean sound section of the parent metal in the vicinity to the intended weld With all safety equipment in place and personal protective clothing on begin welding Lower the electrode down toward the parent metal and strike the arc The position of the electrode is critical to the arc and the end result Achieving a good weld will take practice For more detailed...

Page 14: ...c shock or serious burns For your own safety turn the switch off and remove the plug from the power supply socket when carrying out any form of maintenance or cleaning If in doubt consult Draper Tools or an authorised service agent Welding power supply Component Check points Advisories Front panel Check if any components are damaged or loose Tighten or replace where necessary Front panel Check if ...

Page 15: ...metal position with your hand etc In order to maintain the performance of this product over time regular checking is advised Inspect and clean the housing interior Remove any dirt dust or foreign matters Use compressed air without water dry air to blow accumulated detritus away Regular checking intervals should generally be conducted every 6 months However this should be extended to every 3 months...

Page 16: ...unplug the power supply plug of the HF arc striking power supply If the fault indicator is still on it will indicate that some field effect tubes on the MOS plate are broken Find and replace them with ones of the same type If the fault indicator is off it will indicate that the voltage rise transformer in the HF arc striking circuit on the power supply plate is broken Replace The previous steps ha...

Page 17: ...isuse careless or unsafe handling alterations accidents or repairs attempted or made by any personnel other than the authorised Draper warranty repair agent Note If the tool is found not to be within the terms of warranty repairs and carriage charges will be quoted and made accordingly This warranty applies in lieu of any other warranty expressed or implied and variations of its terms are not auth...

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