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PATON 

MultiPRO series

 DC MMA/TIG/MIG/MAG

  - 16 -

 

4. TUNGSTEN ARC INERT GAS WELDING (TIG) 

In this welding mode, the wire-feeding machine is not needed! 

Attention!

 The TIG-2T welding cycle is set by default, see Clause 4.2.1. 

Shielding gas is most often pure argon “Ar”, sometimes helium “He”, as well as 

their mixtures with different ratios. 

Example: argon + helium “40%Ar+60%Не”. 
EXCLUDE  usage  of  combustible  gases!  Other  gases  can  only  be  used  upon 

approval of the equipment manufacturer. 

Attention!

  A  common  mistake  is  “needle‐like”  electrode  sharpening;  in  this 

case,  the  arc  may  wag  from  side  to  side.  A  correctly  sharpened  electrode  has 
slightly  blunted  neg,  and  the  smaller  is  the  “butt”  withstanding  set  current,  the 
better.  Remember  that  a  very  sharp‐pointed  electrode  flashes  off  very  easily  at 
high arc currents due to low heat emission. In addition, sharpening notches shall be 
located along the electrode axis. 

 

4.1.1 WELDING CYCLE – TIG-LIFT 

 

 
See  Clause  6.1  for  sequence  of  changing  the  value  of  any  function  in  the 

current welding mode. 

 
 

t, s 

Summary of Contents for MultiPRO Series

Page 1: ...1 PATON MultiPRO series DC MMA TIG MIG MAG...

Page 2: ...PATON MultiPRO series DC MMA TIG MIG MAG 2...

Page 3: ...Arc current fade in function 23 4 7 Arc current fade out function 23 4 8 Crater filling current function 23 4 9 Function of post purging with shielding gas 23 4 10 Pulsed current welding function 23 5...

Page 4: ...G welding Phase conductor cross section sq mm Maximum cable length m MultiPRO 250 3 mm 120 at most 0 8 mm at most 1 5 75 2 105 2 5 130 4 205 6 310 4 mm 160 at most 1 0 mm at most 2 75 2 5 95 4 155 6 2...

Page 5: ...wn discretion The machines are completed with all necessary accessories for comfortable work in the modes of manual metal arc welding MMA tungsten arc inert gas welding TIG and semiautomatic metal ine...

Page 6: ...off MMA open circuit voltage V 12 75 12 75 Arc striking voltage V 110 110 Rated power consumption kVA 6 9 7 9 6 9 7 9 Maximum power consumption kVA 11 0 11 0 Efficiency factor 90 90 Cooling forced for...

Page 7: ...7 PATON MultiPRO series DC MMA TIG MIG MAG...

Page 8: ...ode d permanent red light in case of malfunction e no light in case of mains voltage rise or drop beyond the normal value 6 Digital seven segment display of the wire feeding machine 7 The button of wi...

Page 9: ...r shielding gas supply when using an argon torch 2 START UP Attention Before start up and commissioning please read the section Safety rules Clause 15 2 1 INTENDED USE The welding machine is designed...

Page 10: ...oltage of 3 400V 20 with neutral wire Attention All manufacturer s warranty liabilities become void if the single phase machine MultiPRO 250 is connected to mains voltage exceeding 270V Such a situati...

Page 11: ...sition I set the MMA welding mode by pressing the button 4 the modes switch over end around use buttons 2 to set the main parameter which is welding current if necessary additional functions of weldin...

Page 12: ...the Hot Start value in such a case The result is achieved by the following means In the moment of arc striking welding current increases by the default value of 40 for a short time Example welding wit...

Page 13: ...et Arc Force magnitude and a trigger level to unnecessarily high value because at high limit values especially during welding with thin electrodes less than 3 2mm in diameter affects actuation of Anti...

Page 14: ...arc is undesirable For this purpose the machine provides the possibility to set the Short Arc function Sh A to ON position By default it is set to OFF position See Clause 6 1 for sequence of changing...

Page 15: ...uency Fr P 5 0Hz and duty ratio dut 50 by default Result current will pulse in the range from 36A to 84A with a frequency of 5Hz pulses will be of the same shape in terms of both magnitude and time If...

Page 16: ...only be used upon approval of the equipment manufacturer Attention A common mistake is needle like electrode sharpening in this case the arc may wag from side to side A correctly sharpened electrode h...

Page 17: ...witch over end around set the function of the button of the TIG LIFT torch by pressing button 3 until the indicator shows But in 0 2s after the button is released the machine will display current posi...

Page 18: ...ing the work piece with the electrode The user can keep the electrode in this position for an unlimited time and when he she decides that he she is ready to proceed with welding for example he she has...

Page 19: ...t the mains plug of the source to the supply mains set power switch 18 on the rear panel to position I set the TIG welding mode by pressing the button 4 the modes switch over end around set the functi...

Page 20: ...nit which performs the function of weld zone pre purging with gas opens the gas valve and sends the switch on signal to the source with a time delay at the same time a high frequency high voltage puls...

Page 21: ...lding mode by pressing the button 4 for this it is necessary to hold it for about 5 seconds The indicator will start blinking informing the user that it is ready to switch to the next welding mode You...

Page 22: ...ime current starts dropping to the level of crater filling current and is maintained on that level until the button is released Only when the button is released for the second time the source switches...

Page 23: ...urned off See Clause 6 1 for sequence of changing the value of any function in the current welding mode 4 8 CRATER FILLING CURRENT FUNCTION This function is essential for setting the final level of pr...

Page 24: ...equency Fr P 10 0Hz and duty ratio dut 50 by default Result current will pulse in the range from 70A to 130A with a frequency of 10Hz pulses will be of the same shape in terms of both magnitude and ti...

Page 25: ...ng install the source on the base of wire feeding machine for better rigidity brace the source and the base with a strap through slit type apertures on the sides of the source and tighten the strap Th...

Page 26: ...of welding process can be adjusted see a changeover sequence in Clause 6 1 Remember to supply shielding gas In order to check its availability a button 10 is provided in the torch channel at the mome...

Page 27: ...a signal is given to turn on the source and the wire feed motor From now on the welding process begins at the same time the function of smoothly entering the welding mode during the t uP time is work...

Page 28: ...ol signal enters the control unit the function of pre purging the welding zone with gas the gas valve is opened is processed then after the first release of the button a signal is given to turn on the...

Page 29: ...necessary to protect the weld zone from the harmful effects of atmospheric air and consists in pre purging the weld zone with shielding gas before the arc striking By default the pre purging time t P...

Page 30: ...the value of any function in the current welding mode Use the left source indicator and the right indicator of the wire feeding machine 5 7 PULSED VOLTAGE WELDING FUNCTION This function is designed to...

Page 31: ...the welding process and the mixing of the weld pool will change This is necessary in the situation when a user has reduced base current and provided maintenance of stable welding process using pulses...

Page 32: ...6 1 Button 4 on the front panel of the machine is responsible for selecting the welding mode this will be discussed in Clause 6 2 Button 2 on the front panel of the source is responsible for changing...

Page 33: ...reset them to standard factory values just hold button 3 that is used to enter the function menu If the machine has a system of protection against unauthorized access to the function menu then pressin...

Page 34: ...is the ratio of larger current cycle to pulse spacing in percent 50 by default a 20 80 increment 1 TIG welding mode 0 2 main parameter CURRENT 100A by default a 12 250 increment 1 1 But torch button m...

Page 35: ...Pr pre purging with shielding gas time 0 1s by default a 0 1 25 0s increment 0 1s 3 t P0 post purging with shielding gas time 1 5s by default a 1 25 0s increment 0 1s 4 t uP voltage fade in time 0 1s...

Page 36: ...ensure proper operation of the machine for many years adhere to several rules conduct inspection in accordance with safety practices within the established time intervals see Safety rules chapter if t...

Page 37: ...any mode of transport which provides its integrity complying with all transportation rules established for this mode of transport 12 TECHNICAL SPECIFICATIONS Attention If a source is designed for spe...

Page 38: ...e Warranty operation life is ___ years from the sale date specified in the data sheet Warranty servicing does not include replacement of consumable parts that have worn out in the course of operation...

Page 39: ...DOUS GASES AND VAPOURS if smoke and hazardous gases emerge in the operating zone remove them with special means provide sufficient fresh air inflow arc radiation field must be free from solvent vapour...

Page 40: ...additional to the manual adhere to general and local safety and environmental rules all instructions on the welding machine shall be kept readable STRAY WELDING CURRENTS make sure that the mass cable...

Page 41: ...41 PATON MultiPRO series DC MMA TIG MIG MAG Schematic electrical diagram of the PATON MUltiPRO 250 DC MMA TIG MIG MAG...

Page 42: ...42 16 ACCEPTANCE CERTIFICATE Arc inverter rectifier PATON MultiPRO 250 250 400V Serial number ________________MF has been approved for operation Sale date _________________ _____ 20____ Place of seal...

Page 43: ..._____________________________________________________ ____________________________________________________________________ Date of receipt for repair _________________ _____ 20____ __________________...

Page 44: ...____________________________________________________ ____________________________________________________________________ Date of receipt for repair _________________ _____ 20____ __________________ s...

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