E-4

 

 

TROUBLESHOOTING

 

E-4

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

Observe all Safety Guidelines detailed throughout this manual

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

PROBLEMS

 

POSSIBLE

 

 

 

RECOMMENDED

 

 

 

(SYMPTOMS)

 

CAUSE

 

 

 

COURSE OF ACTION

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

OUTPUT PROBLEMS

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

Major physical or electrical damage

1. Contact your local authorized

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

is evident when the sheet metal

 

 

Lincoln Electric Field Service

 

 

 

 

 

 

 

 

covers are removed.

 

 

facility for technical assistance.

 

 

 

 

 

 

 

 

Input fuses keep blowing, or input

 

 

1. Make certain that fuses or

 

 

 

 

 

 

 

 

breaker keeps tripping.

 

 

breakers are properly sized.

 

 

 

 

 

 

 

 

 

 

 

 

See Installation section of this

 

 

 

 

 

 

 

 

 

 

 

 

manual for recommended

 

 

 

 

 

 

 

 

 

 

 

 

fuse and breaker sizes.

 

 

 

 

 

 

 

 

 

 

 

 

2. Welding procedure is drawing

 

 

 

 

 

 

 

 

 

 

 

 

too much output current, or

 

 

 

 

 

 

 

 

 

 

 

 

duty cycle is too high .

 

 

 

 

 

 

 

 

 

 

 

 

Reduce output current, duty

 

 

 

 

 

 

 

 

 

 

 

 

cycle, or both.

 

 

 

 

 

 

 

 

 

 

 

 

 

3. There is internal damage to

 

 

 

 

 

 

 

 

 

 

 

 

the power source. Contact an

 

 

 

 

 

 

 

 

 

 

 

 

authorized Lincoln Electric

 

 

 

 

 

 

 

 

 

 

 

 

Service facility.

 

 

 

 

 

 

 

 

 

Machine will not power up (no

 

 

1. Make certain that the Power

 

 

 

 

 

 

 

 

lights, no fan, etc.)

 

 

Switch (SW1) is in the “ON”

 

 

 

 

 

 

 

 

 

 

 

 

position.

 

 

 

 

 

 

 

 

 

 

 

 

 

2. Circuit breaker CB4 (in recon-

 

 

 

 

 

 

 

 

 

 

 

 

nect area) may have opened.

 

 

If all recommended possible areas

 

 

 

 

 

 

 

 

 

Reset. Also, check input volt-

 

 

of misadjustments have been

 

 

 

 

 

 

 

 

 

age selection, below.

 

 

checked and the problem persists,

 

 

 

 

 

 

 

 

 

3. Input voltage selection made

 

 

contact your local Lincoln

 

 

 

 

 

 

 

 

 

improperly .

Power down,

 

 

Authorized Field Service Facility.

 

 

 

 

 

 

 

 

 

check input voltage reconnect

 

 

 

 

 

 

 

 

 

 

 

 

according to

diagram on

 

 

 

 

 

 

 

 

 

 

 

 

reconnect cover.

 

 

 

 

 

 

 

 

Thermal LED is lit.

 

 

1. Fan thermostat has opened.

 

 

 

 

 

 

 

 

 

 

 

 

Check for proper fan opera-

 

 

 

 

 

 

 

 

 

 

 

 

tion. (Fan should run whenev-

 

 

 

 

 

 

 

 

 

 

 

 

er output power is on.) Check

 

 

 

 

 

 

 

 

 

 

 

 

for material blocking intake or

 

 

 

 

 

 

 

 

 

 

 

 

exhaust louvers, or for exces-

 

 

 

 

 

 

 

 

 

 

 

 

sive dirt clogging cooling chan-

 

 

 

 

 

 

 

 

 

 

 

 

nels in machine.

 

 

 

 

 

 

 

 

 

 

 

 

2. Secondary rectifier or Choke

 

 

 

 

 

 

 

 

 

 

 

 

thermostat has opened. After

 

 

 

 

 

 

 

 

 

 

 

 

machine has cooled, reduce

 

 

 

 

 

 

 

 

 

 

 

 

load, duty cycle, or both .

 

 

 

 

 

 

 

 

 

 

 

 

Check for material blocking

 

 

 

 

 

 

 

 

 

 

 

 

intake or exhaust louvers.

 

 

 

 

 

 

 

 

 

 

 

 

3. DC Bus PC board thermostat

 

 

 

 

 

 

 

 

 

 

 

 

has opened check for exces-

 

 

 

 

 

 

 

 

 

 

 

 

sive load on 40VDC supply.

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

CAUTION

If for any reason you do not understand the test procedures or are unable to perform the tests/repairs safely, con- tact your local authorized Lincoln Electric Field Service Facility for technical assistance.

POWER WAVE 455M

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Lincoln Electric IM762-C manual Output Problems, Contact your local Lincoln

IM762-C specifications

The Lincoln Electric IM762-C is a state-of-the-art industrial welding machine designed to meet the demanding needs of modern welding applications. This versatile machine is recognized for its advanced features, robust performance, and user-friendly interface, making it a popular choice among professionals in various sectors including manufacturing, construction, and fabrication.

One of the standout features of the IM762-C is its high-duty cycle, which allows for prolonged use without significant overheating. This capability is essential for operations that require continuous and consistent welding performance, ensuring productivity and efficiency are maximized in any work environment. Additionally, the machine is equipped with a powerful inverter technology, which not only enhances energy efficiency but also ensures stable arc performance across a wide range of materials.

The IM762-C supports multiple welding processes, including MIG, TIG, and stick welding. This flexibility allows users to switch between welding methods depending on specific project requirements effortlessly. The machine also features advanced controls and digital displays that provide real-time feedback on welding parameters, allowing operators to make immediate adjustments for optimal results.

Another notable characteristic of the IM762-C is its exceptional portability. Weighing significantly less than traditional welding machines, it can be easily transported to job sites, making it ideal for mobile applications. The design also incorporates rugged construction, which ensures durability in challenging environments.

Safety is a paramount consideration in the design of the IM762-C. It is equipped with several safety features including over-temperature protection, overload indicators, and a user-friendly interface that minimizes the risk of operator error. The machine also complies with international safety standards, providing peace of mind to users.

In summary, the Lincoln Electric IM762-C combines versatility, efficiency, and safety in a robust package. Its advanced inverter technology, high-duty cycle, and multifunctional capabilities make it an invaluable tool for any welding professional. Whether working in a workshop or on a job site, the IM762-C stands out as a dependable and efficient solution for a wide range of welding tasks.