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F-20

TROUBLESHOOTING & REPAIR

F-20

 

Observe Safety Guidelines detailed in the beginning of this manual.

PROBLEMS

POSSIBLE AREAS OF

RECOMMENDED

(SYMPTOMS)

MISADJUSTMENT(S)

COURSE OF ACTION

 

 

 

 

OUTPUT PROBLEMS

 

The engine will not go to high idle

Check that the welding cables are

Check the leads and connections

when striking arc. The automatic

in good working condition and the

at the SHUNT at the Positive out-

idle system functions normally

connections are tight. Make sure

put stud. Check lead 204S and

when using auxiliary power.

the work clamp is attached to

206S for continuity from the shunt

Welding and auxiliary outputs are

clean, bare metal.

to J-6 on the Weld Control Board.

normal when the idle switch is in

 

Check the pins and connections at

the “HIGH IDLE” position.

 

J-6 and J on the Weld Control

 

 

Board.

 

 

The weld control P.C. Board may

 

 

be defective.

 

 

 

The engine will not go to high idle

Check that the welding cables and

The weld control P.C. Board may

when attempting to strike and arc,

the auxiliary power lead connec-

be defective.

or when a load is applied to any of

tions are tight.

 

the auxiliary power receptacles.

 

 

 

 

 

The engine goes to low idle, but

Make sure there are no auxiliary

The Idler solenoid linkage may be

will not stay low idle.

loads on either the weld terminals

damaged or out of adjustment.

 

or the auxiliary receptacles.

Make sure the solenoid plunger is

 

Check that the welding cables and

able to fully ease against the inter-

 

the auxiliary cables and the auxil-

nal stop of the solenoid coil

 

iary power lead connections are

assembly.

 

tight and that the insulation is not

The low idle RPM may be too low.

 

damaged.

Perform the ENGINE THROTTLE

 

 

ADJUSTMENT TEST.

 

 

The solenoid hold coil power cir-

 

 

cuit may be defective. Perform

 

 

the IDLER SOLENOID TEST.

 

 

The solenoid hold coil power cir-

 

 

cuit may be faulty. Check wiring

 

 

and connections on lead #210A

 

 

and lead #215.

 

 

The weld control PC Board may

 

 

be defective.

 

 

 

CAUTION

If for any reason you do not understand the test procedures or are unable to perform the tests/repairs safely, contact the Lincoln Electric Service Department for technical troubleshooting assistance before you proceed. Call 1-888-935-3877.

VANTAGE® 400

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Lincoln Electric 400 service manual Adjustment Test

400 specifications

The Lincoln Electric 400 is a state-of-the-art multi-process welding machine designed to meet the demands of today’s industrial welding applications. Renowned for its reliability and versatility, this welder is a preferred choice among professionals in fabrication, construction, and maintenance industries.

One of the main features of the Lincoln Electric 400 is its multi-process capability. It seamlessly integrates MIG, TIG, and stick welding processes into a single unit, allowing users to switch between methods depending on the job at hand. This flexibility makes it incredibly suitable for a wide range of materials, including steel, stainless steel, and aluminum.

The welding machine boasts a robust power output, with a maximum range of 400 amps. This impressive capacity enables it to handle thick materials effectively, making it ideal for heavy-duty tasks. The machine operates on both single-phase and three-phase power, giving users the advantage of versatility depending on the power source available at the job site.

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In terms of durability, the Lincoln Electric 400 is designed for rugged environments. Its heavy-duty construction, including a robust metal casing and protective features, ensures it can withstand the rigors of daily use in harsh conditions. Furthermore, the welder is often praised for its efficient cooling system, which prolongs the machine's lifespan and maintains optimal performance even during extended usage.

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In conclusion, the Lincoln Electric 400 stands out in the welding equipment market due to its multi-process capabilities, impressive power output, user-friendly interface, durability, and portability. It is engineered to exceed the expectations of professional welders, providing them with the tools needed for high-quality results across a variety of applications.