Jasic MIG 270S Operator'S Manual Download Page 3

Safety Precautions

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These general safety norms cover both arc welding 
machines and plasma cutting machines unless 
otherwise noted.

The  equipment  must  only  be  used  for  the  purpose  it  was 
designed  for.  Using  it  in  any  other  way  could  result  in 
damage or injury and in breach of the safety rules.

Only suitably trained and competent persons should use the 
equipment.  Operators  should    respect  the  safety  of  other 
persons.

Prevention against electric shock

The equipment should be installed by a qualified person and 
in  accordance  with  current  standards  in  operation.It  is  the 
users  responsibility  to  ensure  that  the  equipment  is 
connected  to  a  suitable  power  supply.  Consult  with  your 
utility supplier if required

If  earth  grounding  of  the  work  piece  is  required,  ground  it 
directly with a separate cable. 

Do not use the equipment with the covers removed.

Do  not  touch  live  electrical  parts  or  parts  which  are 
electrically charged. 

Turn o

 all equipment when not in use. 

Cables  (both  primary  supply  and  welding)  should  be 
regularly  checked  for  damage  and  overheating.  Do  not  use 
worn, damaged, under sized, or poorly jointed cables.

Ensure that you wear the correct protective clothing, gloves, 
head and eye 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 di

erent machine. 

Do not wrap cables over your body. 

Ensure that you take additional safety precautions when you 
are  welding  in  electrically  hazardous  conditions  such  as 
damp  environments,  wearing  wet  clothing,  and  metal 
structures.  Try  to  avoid  welding  in  cramped  or  restricted 
positions. 

Ensure  that  the  equipment  is  well  maintained.  Repair  or 
replace damaged or   defective parts immediately. Carry out 
any  regular  maintenance  in  accordance  with  the 
manufacturers instructions.

Safety against fumes and welding gases

Locate the equipment in a well-ventilated position.

Keep your head out of the fumes. Do not breathe the fumes. 

Ensure the welding zone is in a well-ventilated area. If this is 
not  possible  provision  should  be  made  for  suitable  fume 
extraction. 

If ventilation is poor, wear an approved respirator. 

Read  and  understand  the  Material  Safety  Data  Sheets 
(MSDS’s)  and  the  manufacturer’s  instructions  for  metals, 
consumable, coatings, cleaners, and de-greasers. 

Do not weld in locations near any de-greasing, cleaning, or 
spraying operations.  Be aware that heat and rays of the arc 
can  react  with  vapours  to  form  highly  toxic  and  irritating 
gases. 

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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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