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LN-25 PORTABLE CV/CC

SEMIAUTOMATIC WIRE FEEDER

OPERATING MANUAL

IM359-G

February, 1998

For use with machines having Code Number

10231
10232
10233

Safety Depends on You

Lincoln arc welding and cutting
equipment is designed and built
with safety in mind. However, your
overall safety can be increased by
proper installation ... and thought-
ful operation on your part.

DO NOT

INSTALL, OPERATE OR REPAIR
THIS EQUIPMENT WITHOUT
READING THIS MANUAL AND
THE SAFETY PRECAUTIONS
CONTAINED THROUGHOUT.

And, most importantly, think before
you act and be careful.

• Sales and Service through Subsidiaries and Distributors Worldwide •

Cleveland, Ohio 44117-1199 U.S.A. TEL: 216.481.8100 FAX: 216.486.1751 WEB SITE: www.lincolnelectric.com

World's Leader in Welding and Cutting Products

Premier Manufacturer of Industrial Motors

Содержание IM359-G

Страница 1: ...by proper installation and thought ful operation on your part DO NOT INSTALL OPERATE OR REPAIR THIS EQUIPMENT WITHOUT READING THIS MANUAL AND THE SAFETY PRECAUTIONS CONTAINED THROUGHOUT And most impor...

Страница 2: ...WEARERS SHOULD CONSULT WITH THEIR DOCTOR BEFORE OPERATING Read and understand the following safety highlights For additional safety information it is strongly recommended that you purchase a copy of S...

Страница 3: ...cal earth ground 3 f Maintain the electrode holder work clamp welding cable and welding machine in good safe operating condition Replace damaged insulation 3 g Never dip the electrode in water for coo...

Страница 4: ...vent the welding sparks from starting a fire Remember that welding sparks and hot materials from welding can easily go through small cracks and openings to adjacent areas Avoid welding near hydraulic...

Страница 5: ...ri s et non inflammables 4 Des gouttes de laitier en fusion sont mises de l arc de soudage Se prot ger avec des v tements de protection libres de l huile tels que les gants en cuir chemise paisse pan...

Страница 6: ...e the information must be followed to avoid minor personal injury or dam age to this equipment CAUTION Please Examine Carton and Equipment For Damage Immediately When this equipment is shipped title p...

Страница 7: ...as Solenoid Kit C 2 K434 1 Gas Flow Timer Kit C 2 K460 1 Pulse Power Adapter Kit C 3 K461 Pulse Power Control Cable Assembly C 3 K443 1 LN 25 Contactor Kit C 3 Remote Output Control Options and Contro...

Страница 8: ...with contactor 300 Amps 60 Duty Cycle WIRE SPEED RANGE 50 700 Inches Per Minute IPM RECOMMENDED ELECTRODE WIRE SIZES 023 to 1 16 SOLID STEEL WIRE 045 to 5 64 CORED WIRE 035 to 1 16 ALUMINUM WIRE PHYSI...

Страница 9: ...output control or contactor is used with the LN 25 the electrode circuit including welding wire wire drive and welding gun is electrically hot when the welding power source is on The gun trigger cont...

Страница 10: ...y installed on K446 and K449 models See K430 1 Gas Solenoid Kit Section in Accessories Section for gas solenoid operation and gas supply connection c Place Set to Same Polarity As Electrode Cable Conn...

Страница 11: ...Connect a work lead of sufficient size between the proper output stud on the power source and the work Be sure the connection to the work makes tight metal to metal electrical contact Poor work lead c...

Страница 12: ...plications in virtually any environment RECOMMENDED PROCESSES AND EQUIPMENT When combined with the quality drive roll kits and accessories available for use with the LN 25 a versatile portable welding...

Страница 13: ...he forward CV position provides constant wire feed speed mode for use with constant voltage CV welding power sources The backward VV CC position provides arc sensing wire feed speed mode for use with...

Страница 14: ...Option or Internal Contactor K443 1 is not used When used with a K460 1 Pulse Power Adapter Kit the LN 25 does not need a clip lead NOTE The clip lead also serves as a work sensing lead for the LN 25...

Страница 15: ...B INNERSHIELD COILS Requires Optional K435 Spindle Adapter for 14 lb Coils a Remove the locking collar and the Readi Reel adapter shipped on the 2 diameter spindle adapter is not required b Mount K435...

Страница 16: ...with the thumbscrew on the spindle hub until the reel turns freely but with little or no overrun when wire feeding is stopped Do not overtighten Keep gun in LN 25 gun holder when not feeding wire to p...

Страница 17: ...nce is im proved using arc sensing wire feed speed VV CC mode In this wire feed mode the wire speed increases if arc voltage increases and decreases if arc voltage decreases but remains constant at an...

Страница 18: ...UP a Connect work cable to metal to be welded Work cable must make good electrical contact to the work The work must also be grounded as stated in Arc Welding Safety Precautions b Check that the LN 25...

Страница 19: ...using the LN 25 with a constant current CC power source for noncritical commercial quality mild steel welding applications PROCEDURE AT END OF COIL When the wire on the reel is used up the following...

Страница 20: ...ctrode shorts to the work the arc voltage will essentially drop to zero and the short circuit current supplied by the CC power source may not provide enough power to re establish the arc especially wi...

Страница 21: ...l Cable X IMPORTANT SAFETY NOTE This wire feeder provides COLD electrode when gun trigger is released if equipped with K431 1 K432 or K433 remote output control system or K443 1 internal contactor kit...

Страница 22: ...e gases such as Argon Helium Nitrogen and blended gasses such as Ar He Ar N2 Ar O2 Ar CO2 CO2 Ar CO2 O2 CYLINDER may explode if damaged Keep cylinder upright and chained to support Keep cylinder away...

Страница 23: ...ed with K431 1 or K624 1 Remote Output Control Kit or K460 1 Pulse Power Adapter Kit If remote voltage control is desired along with the internal contactor obtain a K444 K444 1 or K444 2 Remote Voltag...

Страница 24: ...rent used should be less than 350 amps The K439 Extension cable end with the male pin connector connects to the K433 Remote Box and power source per the Instructions included with the K433 kit The K43...

Страница 25: ...pin control receptacle a K864 Adapter is required to connect to K444 1 and if using a power source without an output control switch a K484 Jumper Plug will also be required to jumper the output pilot...

Страница 26: ...49 747 diameter should be made from brass if it is to be part of the welding current carrying circuit S12024 1 L E Part No Amphenol AN3057 10 or equiv S12020 6 L E Part No Amphenol MS 3106A 18 11P or...

Страница 27: ...tion Clean it as necessary Do not use a solvent for cleaning the idle roll because it may wash the lubricant out of the bearing The drive roll idle roll and guide tubes are stamped with the wire sizes...

Страница 28: ...flat 1 Be sure the Wire Speed potentiometer mounting nut is securely tightened then rotate the potentiometer shaft so its flat faces about to the 100 mark on the LO range calibrated dial 2 Set DIAL R...

Страница 29: ...ptoms that the machine may exhibit Find the listing that best describes the symptom that the machine is exhibiting Symptoms are grouped into the following categories Output Problems Feeding Problems a...

Страница 30: ...s but stops again 1 The drive motor may be overloaded Check the wire feeding system EX Drive roll tension reel brake and gun cable liner Wire feeds OK but stubs or stops while welding 1 If the power s...

Страница 31: ...r cable liner 9 Partially flashed or melted contact tip 10 Incorrect idle roll pressure 11 Wire reel brake tension set too high RECOMMENDED COURSE OF ACTION FEEDING PROBLEMS POSSIBLE AREAS OF MISADJUS...

Страница 32: ...nnect ions Check for loose or faulty connections 4 Wrong electrode polarity for process being used Weld porosity narrow and ropey bead or electrode stubbing into plate when welding 1 Contaminated weld...

Страница 33: ...ot be accurate for all machines covered by this manual The specific diagram for a particular code is pasted inside the machine on one of the enclosure panels If the diagram is illegible write to the S...

Страница 34: ...LN 25 F 2 LN 25 PHYSICAL DIMENSIONS 16 60 14 00 21 00 7 40 25 DIMENSIONS 4 96...

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