Jasic MIG 270S Operator'S Manual Download Page 4

Do  not  weld  on  coated  metals,  unless  the  coating  is 
removed from the weld area, the area is well ventilated, and 
while  wearing  an  air-supplied  respirator.  The  coatings  on 
many metals can give o

 toxic fumes if welded.

Prevention against burns and radiation

Arc  rays  from  the  welding  process  produce  intense,  visible 
and invisible (ultraviolet and infrared) rays that can burn eyes 
and skin. 

Wear an approved welding helmet fitted with a proper shade 
of filter lens to protect your face and eyes when welding or 
watching 

Wear  approved  safety  glasses  with  side  shields  under  your 
helmet. 

Never use broken or faulty welding helmets.

Always  ensure  there  are  adequate  protective  screens  or 
barriers  to  protect  others  from  flash,  glare  and  sparks  from 
the  welding  area.  Ensure  that  there  are  adequate  warnings 
that welding or cutting is taking place. 

Wear suitable protective flame resistant clothing.

The sparks and spatter from welding, hot work pieces, and 
hot equipment can cause fires and burns

Welding  on  closed  containers,  such  as  tanks,  drums,  or 
pipes, can cause them to explode. 

Accidental  contact  of  electrode  to  metal  objects  can  cause 
arcs, explosion, overheating, or fire. 

Check and be sure the area is safe and clear of inflammable 
material before carrying out any welding.

Protection against noise

Some welding and cutting operations may produce noise.

Wear safety ear protection to protect your hearing.

Protection from moving parts

When  the  machine  is  in  operation  keep  away  from  moving 
parts  such  as  motors  and  fans.  Moving  parts,  such  as  the 
fan, may cut fingers and hands and snag garments.

Protections and coverings may be removed for maintenance 
and  controls  only  by  qualified  personnel,  after  first 
disconnecting the power supply cable.

Replace  the  coverings  and  protections  and  close  all  doors 
when  the  intervention  is  finished,  and  before  starting  the 
equipment.

Take care to avoid getting fingers trapped when loading and 
feeding wire during set up and operation.

When  feeding  wire  be  careful  to  avoid  pointing  it  at  other 
people or toward your body.

Always ensure machine covers and protective devices are in 
operation.

Precautions against fire and explosion

Avoid  causing  fires  due  to  sparks  and  hot  waste  or  molten 
metal

Ensure that appropriate fire safety devices are available near 
the cutting / welding area.

Remove  all  flammable  and  combustible  materials  from  the 
cutting / welding zone and surrounding areas 

Do not cut/weld fuel and lubricant containers, even if empty. 
These  must  be  carefully  cleaned  before  they  can  be  cut/
welded.

Always allow the cut/welded material to cool before touching 
it  or  placing  it  in  contact  with  combustible  or  flammable 
material.

Do  not  work  in  atmospheres  with  high  concentrations  of 
combustible fumes, flammable gases and dust.

Always  check  the  work  area  half  an  hour  after  cutting  to 
make sure that no fires have begun.

Risks due to magnetic fields

The  magnetic  fields  created  by  high  currents  may 

a

ect  the  operation  of  pacemakers  or  electronically 

controlled medical equipment. 

Wearers  of  vital  electronic  equipment    should  consult  their 
physician before beginning any arc welding, cutting, gouging 
or spot welding operations.

Do  not  go  near  welding  equipment  with  any  sensitive 
electronic  equipment  as  the  magnetic  fields  may  cause 
damage.

3

Summary of Contents for MIG 270S

Page 1: ...wilkinsonstar com MIG Series MIG MAG MMA Separate wire feed welding machine Order code JM 272S MIG 270S JM 352S MIG 350S JM 452S MIG 450S OPERATOR MANUAL ...

Page 2: ...upplier of equipment in the UK and our products are supported by our extensive service network Call your distributor in the unlikely event of a problem occurring Please record below the details from your product as these will be required for warranty purposes and to ensure you get the correct information should you require assistance or spare parts Date purchased __________________________________...

Page 3: ...ye protection Insulate yourself from work and ground using dry insulating mats or covers big enough to prevent any physical contact with the work ground Never touch the electrode if you are in contact with the work ground or another electrode from a different machine Do not wrap cables over your body Ensure that you take additional safety precautions when you are welding in electrically hazardous c...

Page 4: ... fan may cut fingers and hands and snag garments Protections and coverings may be removed for maintenance and controls only by qualified personnel after first disconnecting the power supply cable Replace the coverings and protections and close all doors when the intervention is finished and before starting the equipment Take care to avoid getting fingers trapped when loading and feeding wire durin...

Page 5: ...network at the public network connection point must be applied to these systems In this case the installer or the user is responsible for ensuring the equipment can be connected consulting the electricity provider if necessary Materials and their disposal The equipment is manufactured with materials which do not contain any toxic or poisonous materials dangerous to the operator When the equipment ...

Page 6: ... and current to provide excellent welding characteristics Adopting a unique welding dynamic characteristic control circuit in MIG provides a stable arc low spatter excellent weld appearance and high welding efficiency By removing the ball at the end of the wire after welding a high no load voltage and slow wire feed at the start presents exceptional arc starting The machines also have a very stable ...

Page 7: ... MIG current range A 20 270 50 350 50 450 MIG voltage range V 11 29 15 38 15 5 40 No load voltage V 54 65 72 Wire speed range 0 16m min 0 18m min 1 18m min Rated duty cycle 400 C 35 MMA 80 MIG 100 Efficiency 85 85 88 9 Power factor 0 75 0 93 0 91 Protection class IP21S IP21S IP21S Insulation class F F F Size mm 760 360 585 760 360 585 760 360 585 Weight 29 29 41 Wire diameter applicable mm Φ0 8 1 ...

Page 8: ...4T MIG mode 4 MIG MMA switch 5 output terminal 6 Interconnection socket 7 output terminal 8 2T 4T switch 9 Gas test switch 10 Crater voltage control knob 4T MIG mode 11 Inductance control 12 Digital voltmeter 13 Power on lamp 14 Over temperature warning lamp 7 1 2 3 4 14 13 12 11 10 9 8 5 6 7 ...

Page 9: ... Burn back control 3 Fuse 4 AC 220V outlet 5 3 phase power switch Wire feed control 1 Wire reel cover 2 Wire speed control 3 Wire inch button 4 Euro connector 5 Water supply 6 Water return 7 Voltage control 8 Handle 8 1 2 3 4 8 7 6 5 ...

Page 10: ... module 6 Reactor 7 Power inductor 8 Main transformer 9 Blocking capacitor Internal component layout Right side 1 Main control PCB 2 Saturable inductor 3 Shunt 4 Filter capacitor 5 Resonant capacitor 6 Filter inductor 7 IGBT module 8 HF filter capacitor 9 3 phase rectifier module 10 IF transformer 11 Switch 9 ...

Page 11: ...rminal and the work return to the negative terminal Always consult the electrode manufacturer s data sheet if you have any doubts When using the machine for TIG welding the TIG torch should be connected to the negative terminal and the work return to the positive terminal MMA welding Insert the cable plug with electrode holder into the socket on the front panel of the welding machine and tighten i...

Page 12: ...suring no sliding of the wire Too high pressure will lead to wire distortion which will affect wire feeding Press the wire inch button to thread the wire out of the torch contact tip TIG Scratch start Insert the cable plug with work return clamp into the socket on the front panel of the welding machine and tighten it clockwise Insert the cable plug of the valve type TIG torch into the socket on the...

Page 13: ...n pushing the torch trigger again the machine enters into crater welding and at this time Crate parameters should be set by adjusting the crater welding current control knob and crater voltage control knob on the front panel of the machine The actual current and voltage values are displayed on the front panel of the machine When the torch trigger is released welding ends 2 seconds after welding en...

Page 14: ...gas flow in inner angle welding should be lower Less or no shield gas is needed in FCAW Refer to the table below for the recommended gas flow rates TIG Welding Using valve type torch with no trigger Scratch Arc ignition mode When TIG welding in scratch arc mode connect the valve type torch as shown in the installation section Select the MMA position Open the regulator valve on the gas cylinder and...

Page 15: ...opening the case Protection LED warnings 14 Period Maintenance item Daily examination Carry out a full visual inspection Check for any damage to the machine leads cables and connections Replace where necessary Switch on the machine and check for any warning Led s and general operation Monthly examination Using the dry compressed air to clean the inside of arc welding machine Especially check for b...

Page 16: ...ent and the protection LED is off The wire feeder cable is not well connected Reconnect it When the torch trigger is pushed there is gas output and the wire feeder works but there is no output current and the protection LED is off The wire feeder or welding torch fails Repair the wire feeder or welding torch There is output current when pushing the torch trigger to feed gas but the wire feeder doe...

Page 17: ... L1 L2 L3 fan CN2 1 CN2 2 CN2 5 CN2 4 G3 G4 E3 E4 CN1 5 CN1 6 CN1 2 CN1 1 G1 G2 E1 E2 CN10 3 CN10 1 CN4 3 CN4 4 CN8 5 CN8 2 CN8 3 CN8 4 CN8 1 P6 4 P6 5 P6 6 P6 7 CN7 1 CN7 4 CN7 2 CN7 3 P6 8 P6 9 P6 3 CN7 5 CN9 1 CN9 2 P10 3 P10 2 P10 1 P10 4 P10 5 P8 2 P10 6 P8 3 P8 1 P9 1 P9 2 PK 212 Air switch CN10 2 P6 2 P6 1 CN7 6 1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16 17 18 3 phase retifier bridge R1 25D102K...

Page 18: ...JM MIG Series MIG MAG MMA WELDING MACHINE Order code JM 272S MIG 270S JM 352S MIG 350S JM 452S MIG 450S Wilkinson Star Limited Issue 1 June 2015 Product is subject to change without notice xvii ...

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