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This product is sold subject to the understanding that if any  defect in manufacture or 

material shall appear within 12 months  from  date  of consumer sale, the manufacturer  will  

arrange  for  such  defect  to  be rectified without charge on the sales  invoice  and  warranty  

card  (except for any personal trouble).

General Troubles and Problem Solving:

 

Output current 
decreased

1. Input Voltage is low   
2. Input line is too thin  

2. Power line is thickened     

Current can not be
regulated

 1.Connecting   line   of the potentiometer  is of

  2.Potentiometer for  current  regulation      fail

1.Reconnecting the line     
2.Replace potentiometer  

High frequency are
can not be generated

 1.The switch  fails                               
 2.Interval of high frequency     discharging is t
oo big           
3.Distance of the torch and workpieceis too far
  high frequency arc generator fails 

1.Replace torch switch              
  2.Regulating discharging interval
to 0.8-1.0mm
  3.Put torch tungsten electrode  close to wor
kpiece
4.Replace high frequency arc generator

Arc of argon welding
is   broken     or    
tungsten electrode     
is burnt

1.Argon gas flow is not regulated well 
2.Tungsten electrode fails     
3.Value of current does not match      with  dia.
 of tungsten electrode
4.After flow time too short   

1.Regulated well    
2.Replace or sharpen   
 3.Select the electrode dia. and  
current correctly
4.Enlarge the time   

Welding torch          
overheat

1.Not use the water cooling when the
current is more than 160A
2.The argon flow is the low current   

1.Use water cooling   
2.Enlarge the argon flow   

Welding stops, and 
warning light is on 

Self-protection has engaged 
1.Display  "801"
2.Display  "802"
3.Display  "804"
4.Display  "805"
5.Display  "806"
or
6.Display  "E01"
7.Display  "E02"
8.Display  "E03"
9.Display  "E04"

1.over-voltage, lower-voltage
2. over-current, 
3.over-temperature,
4.torch switch always close
5. lower air pressure

6. over-temperature,
7.over-current, 
8. lower air pressure
9.torch switch always close

Trouble

Causes

Problem Solving

Power lamp not light

1.No electricity input    
2.Switch of welder  fails. 

1.Check incoming line 
2.Replace the switch

Fan not rotating

1.Fan poer line is off. 
2.Enclosure blocks the fan due to deformation
3.The fan fails.   

1.Reconnect the line 
2.Reform the enclosure 
3.Replace the fan 

Warning lamp lights

1.Over heat(yellow lamp lights)       
2.Oer current(Green lamp lights)     

1.Welding after cooling.  
2.Input voltage too low or the machine  fails.

No output of welder

1.Over crrent protection 
2.   Welder fails 

1.    Over load using                 
2.    Maintenance in manufacturer or service 
center  

Summary of Contents for Digi-Multi 250 ACDC

Page 1: ...THANKS FOR PURCHASING OUR PRODUCT OPERATION INSTRUCTIONS BE SUITABLE FOR 1x220V 240V DC INVERTER WELDING MACHINE AC TIG DC TIG DC MMA CUT...

Page 2: ...E WHEN REPAIRING OR ADJUSTING Inspect before every use Only use identical replacement parl 10 FOLLOW ALL MANUFACTURER S RULES on operating switches and making adjustments 11 ALWAYS WEAR PROTECTIVE CLO...

Page 3: ...ge 10 200A Rated Output Current 200A Rated Duty Cycle 60 AC TIG No load Voltage 70V Current Adjusting Range 5 250A SP AC balance 10 70 AC Square Wave Frequency 30 250Hz Rated Duty Cycle 60 DC TIG Curr...

Page 4: ...tion and damage 3 For the safety of the equipment and the persons the customer must correctly make grounding or protection according to the power supply system using 4mm 2 lead to connect the protecti...

Page 5: ...ce 7 AC slector AC WAVE FORM advanced square soft square triangular square sine square 8 warning indicating light 9 MMA slector DC DC 10 TIG PULSE slector 11 TIG slector DC TIG AC TIG MIX TIG 12 2 T 4...

Page 6: ...r press the torch switch select suitable argon flow Regulating the knob 3 13 Selecting suitable welding current according to thickness of the workpiece to be welded Selecting suitable current down slo...

Page 7: ...d application scope of the process The pulse type argon tungsten are welding is different from the continuous DC argon are welding The welding current is pulsed The wave form of the current is shown i...

Page 8: ...can obtain greater penetration ability But too much current can cause local melting of tungsten electrode Generally welding current required for DC tungsten argon are welding or greater current is us...

Page 9: ...ated welding current and rated duty cycle of the welder Overload is not allowed After the welding operation is finished let the welder be ventilated for a few minutes and then cut off the power switch...

Page 10: ...current and air pressure according to the thickness and material of the workpiece and the cutting speed The selecting standard for the spray nozzle of the torch The spray nozzle not change color whil...

Page 11: ...t match with dia of tungsten electrode 4 After flow time too short 1 Regulated well 2 Replace or sharpen 3 Select the electrode dia and current correctly 4 Enlarge the time Welding torch overheat 1 No...

Page 12: ...____ _________technical requirements and its release from the works is granted Inspector_________ Date___________ model quantity remark note Digi Multi 250 ACDC Welding machine 1 Welding Holder 1 Grou...

Page 13: ...electrically live parts or electrode with skin or wet clothing Insulate yourself from work and ground No toque las partes o los electrodos bajo carga con la piel o ropa moja da Aislese del trabajo y...

Page 14: ...e Be und Entl ftung des Arbeitsplatzes Mantenha seu rosto da fuma a Use ventila o e exhaust o para remover fumo da zona respirat ria Turn power off before servicing Desconectar el cable de ali mentaci...

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