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1.  Product Description 

 

This is a melting electrode gas shielded arc welder. It uses arc between wire and work piece as heat source 

to melt wire and master material metal, and then sends shielded gas to welding site, which makes the arc, 

melted wire, melt pond and master material metal free from 

the atmosphere

. The continuous wire can form 

welding seam metal after melting so as to connect the work pieces each other. It is easy to 

do all

 position 

welding and 

is widely used in manufacturing

 The HD series welder uses CO

2

 as shielded gas and wire as 

electrode, is an automatic gas shielded arc welder. It is suitable for low carbon, low alloy steel welding. Its 

characteristics are saving energy, saving material, high efficiency, low cost etc. It can weld stainless steel with 

mixed gas (CO

2

 and Argon) as shielded gas if uses proper wire. The feature of CO

2

 semi-automatic gas 

shielded welder: 

 

2.  Safety Operation 

2.1  O pe r a to r ’s   P ro t e c t i o n  

* Please always follow the rules that conform to safety. Wear protective garments to avoid injuries to eyes and 

skin. 

* Use A welding helmet to cover your head while working with the welding machine. 

Use eye protection 

when viewing the ARC 

Wear protection clothing

* Do not operate under water. 

* Fumes and gases produced when welding are hazardous to health. Make sure to work in places where there 

is proper ventilation or use approved respiratory protection

 

* Please remember to keep arc rays away from the other people when welding.   

2.2 A t t e n ti o n  

* The voltage taps should not be changed while welding otherwise it will be damaged. 

* Check the connection to see if the welder input and output cables are

 properly connected

* Welders have strong electromagnetism and frequency interference, 

people with pacemakers or other items

 

which can be interfered by electromagnetism and frequency.

 Should not operate this machine.

 

Do not crush or kink the torch cable 

. The liner radius cannot less than 150mm, or it may damage the inner 

cable.

 

* No switching when welding. 

* The welder should use within rated duty cycle .Over load may accelerate the components aging 

or 

damaging the machine

   

* The gas bottle should be 

secured to prevent tipping

Do not touch the work piece

. Power should be shut down if leaving the site temporarily. 

2.3

 

S a f e t y   M e a s u re s   t o   B e  Ta k e n  To  A s s ure   t h e   C o r re c t   I n s ta l l a t i o n   a n d   P o s i t i o n  

* Precaution must be taken to keep the operator and the machine from 

overhead hazards

* Inflammable or explosive materials are prohibited around welding site. 

* The welder must be installed in the place where it can not be exposed to sun and rain. Also it must be stored 

in less humid place with the temperature range at 

10 

 40

* There should be 50

 space 

around the

 welding machine to 

ensure

 ventilation. 

* Make sure that there is no foreign body to enter the welding machine. 

* No violent vibration in the welder’s surrounding area. 

Do not operate in a

 strong wind since the welder is gas shielded. 

 

Summary of Contents for HD-350

Page 1: ...Warning Please read Owner s Manual before installation operation or repair of Crossfire welding equipment WARNING ONLY QUALIFIED PERSONELL SHOULD OPERATE OR MAINTAIN THIS MACHINE PLEASE READ THE OWER...

Page 2: ...our welder maintained by a qualified technician in accordance with local state and national codes Always be aware of your work environment Be sure to keep other people especially children away from yo...

Page 3: ...ound Do not attempt to repair or maintain the welder while the power is on Inspect all cables and cords for any exposed wire and replace immediately if found Use only recommended replacement cables an...

Page 4: ...e precautions to ensure that flying sparks do not cause fires or explosions in hidden areas cracks or areas you cannot see Keep a fire extinguisher close in the case of fire Wear garments that are oil...

Page 5: ...ar moving parts such as drive rolls of fan HD 350USE AND CARE Do not modify the machine in any way Unauthorized modification may impair the function and or safety and could affect the life of the equi...

Page 6: ...r use approved respiratory protection Please remember to keep arc rays away from the other people when welding 2 2 Attention The voltage taps should not be changed while welding otherwise it will be d...

Page 7: ...round the operation places 3 2 Requirement for Main Supply The voltage oscillogram should display actual sine wave the oscillation of the frequency should not exceed 1 of the rated value The oscillati...

Page 8: ...rrent X Duty Cycle I1max A Rated Maximum Input Current I1eff A Maximum Virtual Input Current I2 Rated Welding Current U0 V Rated No load Voltage U1 V Rated Input Voltage U2 Conventional load voltage 6...

Page 9: ...lding arc 4 2 Main Technical Data See Table 1 Table 1 ITEM HD 250 HD 350 HD 500 Power voltage V 3 575 3 575 3 575 Frequency Hz 60 60 60 Open circuit voltage V 18 36 19 40 20 51 Welding voltage V 16 5...

Page 10: ...feed button 10 spool shaft 11 2 4 step switch 12 handle 13 Burn back time knob 14 Slow wire feeding switch 15 wire feeder motor 16 Welding cable connector 17 Cable connector 18 Gas connector 4 4 1 2...

Page 11: ...pply Table 3 ITEM HD 350 Air Switch A 30 Power Cable mm2 4 5 3 Connection between HD and Wire Feeder Connect quick connector male of connecting cable to the socket on the back panel of welding machine...

Page 12: ...er end clamps work piece 6 Operation Notice Cut off power and close valve when finished welding or leave the job site temporary The welding worker should wear protected gear Isolating light screen mus...

Page 13: ...essories supply and service back up when they feel unable to work out the technical hitch or problems Maintenance job should be conducted by the trained personnel If the welder is not in use either fo...

Page 14: ...lack phase Connect 3 phase power 5 Low OCV Main circuit diode break down lead to lacking phase Change main circuit diode Incorrect welding norm selected current doesn t match with voltage Adjust weldi...

Page 15: ...t and make them on one direct line Liner inner diameter is too little or too large Replace liner Liner block up Clean the liner 10 Others Please contact distributor 8 Circuit Diagram The circuit chart...

Page 16: ...s Shielded Welder 1 unit Wire Feeder 1 Product Certificate 1 Warranty Card 1 Operator s Manual 1 Accessories Torch 1 Wire Feeder Liner HD 350 1 Gas hose 1 Earth Cable clamp 1 Welding Cable 1 Control C...

Page 17: ...r dust The tolerable temperature ranges from 25 55 and the relative humidity can not be more than 90 After the package has been opened it is suggested to repack the product as per prior requirement fo...

Page 18: ...57 942 4 pin contactor 1 18 2 07 57 942 M mig gun conactor 1 19 2 07 10 043 potentiometer 3 20 2 07 11 009 potentiometer knob I 1 21 2 07 80 634 button switch 2 22 2 07 80 371 switch 1 23 2 07 57 942...

Page 19: ...019 fuse 1 9 2 07 52 028 fuse holder 1 10 2 07 57 757 socket I 1 11 1 1 01 05 0144 hanger 1 12 2 07 57 119 quick connector 1 13 1 2 07 01 0124 input cable 1 14 1 1 01 04 0379 gas cylinder holder 1 15...

Page 20: ...digital ammeter 2 37 1 1 01 05 0138 handle 1 38 2 01 31 061 left holder 1 39 2 01 31 062 right holder 1 40 1 1 02 01 0957 heat seak holder 2 41 2 07 37 551 rectifier bridge 1 42 2 07 42 009 diverter...

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