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F-19

TROUBLESHOOTING & REPAIR

F-19

 

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 idle down to

 

Measure the resistance of toroidal

low RPM. The machine has nor-

 

current sensor. Measure between

mal weld and auxiliary output.

 

#P-3 and #P-4, the resistance

(continued)

 

should be 4.1 Ohms.

 

 

If the sensor is shorted or open

 

 

replace it.

 

 

The control board may be bad.

 

 

 

The engine will not go to high idle

The load on the auxiliary recepta-

Check that leads #3 and #6 are

when using auxiliary power.

cle may be too low.

properly routed through the

Auxiliary power is normal when the

The automatic idle system will not

toroidal current sensor.

idler switch is in the “HIGH” idle

function reliably if the low is less

Each lead must have two turns

position, the automatic idle func-

than 100 Watts.

and must pass through the sensor

tion works properly when welding.

The device connected to the auxil-

in the opposite directions. See

 

iary power may be defective try

wiring diagram. The leads should

 

another device.

be wrapped tightly and tie

 

Make sure the connections to the

wrapped in place.

 

auxiliary device are tight.

Check the toroidal current sensor

 

Some device are designed to

for any signs of damage.

 

sense for adequate input power.

Check leads #260 and #261 for

 

Product of this type may not turn

poor connections and damage to

 

on due to low voltage and frequen-

the conductors and insulation

 

cy of the idling machine. If this

between the toroid current sensor

 

happens the current draw will like-

and the P3 connector in the con-

 

ly be insufficient to activate the

trol PC board.

 

automatic idle system. Device of

Unplug plug P3 from the control

 

this type may require that the Idler

PC board and check for damaged,

 

switch be in the “HIGH IDLE” posi-

dirty, or corroded pins.

 

tion.

Measure the resistance of the

 

 

toroidal current sensor. Measure

 

 

between #P-3 and P-4, the resis-

 

 

tance should be 10-14 Ohms.

 

 

If the sensor is shorted or open

 

 

replace it.

 

 

The control P.C. 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 Troubleshooting & Repair
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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.

Another significant characteristic of the Lincoln Electric 400 is its advanced digital display and control interface. This user-friendly panel allows for easy adjustments to voltage and wire feed speed, ensuring precision and high-quality welds. Additionally, the machine includes built-in features to improve the consistency of welding, such as the Smart MIG technology which optimizes the welding parameters automatically based on the wire diameter and material thickness.

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.

Portability is another key aspect of this welding machine. Weighing under 200 pounds, it is designed with mobility in mind. The integrated wheels allow for easy transportation between job sites, making it a practical choice for mobile welders and contractors.

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.
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