LOKERMANN GRAND ARC 400 CEL User Manual Download Page 1

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USER MANUAL

INVERTER Based Welding Machines

IMPORTANT

: Read this OPERATOR MANUAL together

with PRESCRIPTION AND COMPLIANCE MANUAL before

to use this equipment. In case of loss one of two parts

contact immediately your dealer.

Allow the operator to consult this manual.

GRAND ARC

400 CEL

Summary of Contents for GRAND ARC 400 CEL

Page 1: ...nes IMPORTANT Read this OPERATOR MANUAL together with PRESCRIPTION AND COMPLIANCE MANUAL before to use this equipment In case of loss one of two parts contact immediately your dealer Allow the operato...

Page 2: ...allation for MMA Welding 3 2 2 Operation for MMA Welding 3 2 3 MMA Welding 3 2 4 MMA Welding Fundamentals 3 2 5 MMA Welding trouble shooting 3 3 Installation Operation for TIG Welding 3 3 1 Set up ins...

Page 3: ...nd receivers c computer and other control equipment d safety critical equipment for example guarding of industrial equipment e the health of the people around for example the use of pacemakers and hea...

Page 4: ...tric shock by touching these metallic objects and the electrode at the same time The operator should be insulated from all such bonded metallic objects Earthing of the workpiece Where the workpiece is...

Page 5: ...e applications Designed to work with diesel generators and to avoid failures due to its voltage spikes Power source wind tunnel cooling construction for protection against environmental contamination...

Page 6: ...lly to protect the electro de While TIG operation the minimum current will be outputted firstly until the arc is ignited by lifting method the output current will rise to the preset value which can pr...

Page 7: ...hile the welding current parameters can be adjusted continuously and steplessly to meet with the requirements of welding craft 2 6 Volt Ampere Characteristic MMA series of welding machines has excelle...

Page 8: ...mode indicator 11 MMA VRD mode indicator 12 Lift TIG mode indicator 13 Arc Force control knob 14 Hot Start control knob Denotes more detailed explanation of function to follow Further Controls Explai...

Page 9: ...ave a negative effect on the weld quality due to tungsten contamination Lift arc starting works by gently touching the tungsten on the work piece andthen lifting it off The contro l circuit will sense...

Page 10: ...power switch so that the power switch is ON position then the power indicator light the fan comes on the device work properly 2 Select the MMA MMAVRDfunction with the LIFT TIG MMA MMA VRD selector sw...

Page 11: ...ctrode rod or stick The electrode rod is made of a material that is compatible with the base material being welded and is covered with a flux tha t gives off gaseous vapours that serve as a shielding...

Page 12: ...filler metal to the molten pool These additional functions are provided mainly by the covering on the electrode 3 2 4 MMA WeldingFundamentals Electrode Selection As a general rule the selection of an...

Page 13: ...is to have an arc length no greater than the diameter of the core wire Electrode Size mm Current Range Amps 2 5 mm 60 95 3 2 mm 100 130 4 0 mm 130 165 5 0 mm 165 260 Electrode Angle The angle that th...

Page 14: ...nt grease oil and dirt including mill scale from base metal Poor welding technique Use the correct welding technique or seek assistance for the correct technique 5 Lack of penetration Insufficient hea...

Page 15: ...he fluctuation range 10 The power ground is well grounded NOTE When TIG operation the shielded gas is inputted to welding gun directly Secure the gas cylinder in an upright position by chaining them t...

Page 16: ...Diameter DC Current 1 0mm 25 85 1 6mm 50 160 2 4mm 160 250 3 2mm 250 400 4 0mm 400 500 Shielding Gas Selection Alloy Shielding Gas Carbon Steel Welding Argon Stainless Steel Welding Argon Nickel Allo...

Page 17: ...ct the torch to the DC output terminal Incorrect tungsten being used Check and change the tungsten type if necessary Tungsten being oxidised after weld is finished Keep shielding gas flowing 10 15 sec...

Page 18: ...Tungsten incorrect or in poor condition Check that correct type of tungsten is being used Remove 10mm from the weld end of the tungsten and re sharpen the tungsten Poorly prepared tungsten Grind marks...

Page 19: ...arc in unprotected eyes Ensure good ventilation of the machine to improve Duty Cycle Turn off the engine when the operation finished for energy consumption efficiency When power switch shuts off pro t...

Page 20: ...e or overheated If the arc welding machine has the above problems it should be fastened or changed Observe whether the current output cable is damaged If it is damaged it should be insulated or change...

Page 21: ...to cause sticking The plug loosen or connect not well Check and tighten the plug Oil or dust covered the workpiece Check and clear out Wrong mode selected Check the MMA selector switch is selected 7...

Page 22: ...on E13 Under voltage Yellow lamp thermal protection always on E14 Over voltage Yellow lamp thermal protection always on E15 Over current Yellow lamp thermal protection always on E16 Wire feeder over l...

Page 23: ...AC AC Vcc 0 Vcc Vc Vc PR2 iventer board PR1 control board Vc Vc FA MMA 250 T1 rectifier bridge K C1 condenser FA fan OT protection J4 T2 T3 T4 T5 IGBT moduler T6 T7 fast recovery diode B1 main transf...

Page 24: ...LOKERMANN Srl Via Produzione 16 18 37044 Cologna Veneta VR Italy Tel 39 0442 1722469 lokermann lokermann eu www lokermann eu...