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Thermal LED:  This indicator will turn on when the 
machine is overheated and the output has been 
disabled.  This normally occurs when the duty cycle of 
the machine has been exceeded.  Leave the machine on 
to allow the internal components to cool.  When the 
indicator turns off, normal operation is again possible. 
 

 

VRD LED's (enabled on Australian Machines only):  This 
machine is provided by VRD (Voltage Reduction Device) 
function:  this reduces the voltage at the output leads. 
 

The VRD function is enabled by factory default only 
on machines that meet the AS 1674.2 Australian 
Standards.

  (C-Tick logo " " on/near the Rating Plate 

applied on the machine). 
 

The VRD LED is ON

 when the Output Voltage is below 

12V with the Machine at idle (no welding time). 
 
For others machines this function is disabled (the LED is 
always OFF). 
 

 

Welding Mode Switch:  With four positions, controls the 
welding mode of the machine: three for Stick welding 
(Soft, Crisp and User defined) and one for Lift TIG 
welding. 
 

 

 Soft Stick:  For a welding with a low spatter 

presence.  The Auto Adaptive Arc Force is enabled. 

 

 Crisp Stick:  For an aggressive welding, with an 

increased Arc stability.  The Auto Adaptive Arc 
Force is enabled. 

 

 User defined MMA parameters:  with this 

welding mode the Auto Adaptive Arc Force is 
disabled.  This welding mode allows to manually 
adjust the Hot Start and the Arc Force as following: 
 

 Hot Start:  The Output Current initial increment 

is adjustable between 0 and 60% of the current set 
through the Output Current Knob. 
 

 Arc Force:  The Output Current temporary 

increments are adjustable between 0 and 50% of 
the current set through the Output Current Knob. 
 

 

 Lift TIG:  When the mode switch is in the Lift 

TIG position, the stick welding functions are 
disabled and the machine is ready for Lift TIG 
welding.  Lift TIG is a method of starting a TIG weld 
by first pressing the TIG torch electrode on the work 
piece in order to create a low current short circuit.  
Then, the electrode is lifted from the work piece to 
start the TIG arc. 

 

 

Meter:  The meter displays the preset welding current 
before welding and the actual welding current during 
welding. 
 
Through the Pushbutton on the Display right side, the 
Display alternatively shown the output Current (A) or 
Voltage (V).  The LEDs (A) (V) on top side indicates the 
measure unit of the value shown by the Display. 
 
A flashing dot on the Display indicates that the value 
read is the average value (V or A) of the previous 
welding time.  This feature shown the average value for 
5seconds after every welding time. 
 

Other Controls and Features 

A.  Power Switch:  It turns ON / 

OFF the input power to the 
machine. 

 
B.  Input cable:  Connect it to 

the mains. 

 
C.  Fan:  This machine has a 

F.A.N. (Fan As Needed) 
circuitry inside:  the fan is 
automatically turned ON or 
OFF.  This feature reduces 
the amount of dirt which can 
be drawn inside the 
machine and reduces power consumption.  When 
the machine is turned ON the fan will turn ON.  The 
fan will continue to run whenever the machine is 
welding.  If the machine doesn’t weld for more than 
five minutes, the fan will turn OFF. 

 

Maintenance 

 

 WARNING 

For any maintenance or repair operations it is 
recommended to contact the nearest technical service 
center or Lincoln Electric.  Maintenance or repairs 
performed by unauthorized service centers or personnel 
will null and void the manufacturers warranty. 
 
The frequency of the maintenance operations may vary 
in accordance with the working environment.  Any 
noticeable damage should be reported immediately. 
 

 

Check cables and connections integrity.  Replace, if 
necessary. 

 

 

Keep clean the machine.  Use a soft dry cloth to 
clean the external case, especially the airflow inlet / 
outlet louvers. 

 

 WARNING 

Do not open this machine and do not introduce anything 
into its openings.  Power supply must be disconnected 
from the machine before each maintenance and service.  
After each repair, perform proper tests to ensure safety. 
 
 

 

Summary of Contents for INVERTEC 270SX

Page 1: ...IM2025 04 2016 REV03 INVERTEC 270SX 400SX OPERATOR S MANUAL ENGLISH Lincoln Electric Bester Sp z o o ul Jana III Sobieskiego 19A 58 263 Bielawa Poland www lincolnelectric eu ...

Page 2: ...ERTEC 270SX INVERTEC 400SX conforms to the following directives 2014 35 EU 2014 30 EU and has been designed in compliance with the following standards EN 60974 1 2012 EN 60974 10 2014 20 04 2016 Piotr Spytek Operations Director Lincoln Electric Bester Sp z o o ul Jana III Sobieskiego 19A 58 263 Bielawa Poland 12 05 ...

Page 3: ...ly to the dealer For future reference record in the table below your equipment identification information Model Name Code Serial Number can be found on the machine rating plate Model Name Code Serial number Date Where Purchased ENGLISH INDEX Safety 1 Installation and Operator Instructions 2 Electromagnetic Compatibility EMC 5 Technical Specifications 6 WEEE 6 Spare Parts 6 Electrical Schematic 6 A...

Page 4: ...MAGNETIC FIELDS MAY BE DANGEROUS Electric current flowing through any conductor creates electric and magnetic fields EMF EMF fields may interfere with some pacemakers and welders having a pacemaker shall consult their physician before operating this equipment CE COMPLIANCE This equipment complies with the European Community Directives ARTIFICIAL OPTICAL RADIATION According with the requirements in...

Page 5: ...ry when possible and do not place it on wet ground or in puddles Locate the machine away from radio controlled machinery Normal operation may adversely affect the operation of nearby radio controlled machinery which may result in injury or equipment damage Read the section on electromagnetic compatibility in this manual Do not operate in areas with an ambient temperature greater than 40 C Input Su...

Page 6: ...unction Auto Adaptive Arc Force that increases temporary the output current used to clear intermittent connections between the electrode and the weld puddle that occur during stick welding This is an active control feature that guarantees the best arrangement between the arc stability and spatter presence The feature Auto Adaptive Arc Force has instead of a fixed or manual regulation an automatic ...

Page 7: ...essing the TIG torch electrode on the work piece in order to create a low current short circuit Then the electrode is lifted from the work piece to start the TIG arc Meter The meter displays the preset welding current before welding and the actual welding current during welding Through the Pushbutton on the Display right side the Display alternatively shown the output Current A or Voltage V The LE...

Page 8: ...io and or television transmitters and receivers Computers or computer controlled equipment Safety and control equipment for industrial processes Equipment for calibration and measurement Personal medical devices like pacemakers and hearing aids Check the electromagnetic immunity for equipment operating in or near the work area The operator must be sure that all equipment in the area is compatible ...

Page 9: ...t WEEE and its implementation in accordance with national law electrical equipment that has reached the end of its life must be collected separately and returned to an environmentally compatible recycling facility As the owner of the equipment you should get information on approved collection systems from our local representative By applying this European Directive you will protect the environment...

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