A-5

INSTALLATION

A-5

 

 

 

SPARK ARRESTOR

The muffler included with this welder has been modi- fied and now qualifies as a spark arrestor. Mufflers on

WARNING

• Spark Arrestor and Muffler may be hot!

Allow engine to cool before servicing spark arrestor!

Do not operate engine while servicing spark arrestor!

machines manufactured before this change do not qualify as spark arrestors and were shipped from the factory with an additional spark arresting unit for that purpose. Integral spark arresting mufflers will have a clean out service plug and will have “USDA FS 51001C QUALIFIED SPARK ARRESTOR” stamped on the muffler shell. Any spark arrestor must be serviced and properly maintained. For machines with separate spark arrestors, secure the arrestor to the outlet tube on the muffler using the clamp provided.

An incorrect spark arrester may lead to damage to the engine or adversely affect performance.

------------------------------------------------------------------------

CAUTION

WELDING OUTPUT CABLES

With the engine off, connect the electrode and work cables to the studs provided. These connections should be checked periodically and tightened if neces- sary.

Listed in Table A.1 are copper cable sizes recom- mended for the rated current and duty cycle. Lengths stipulated are the distance from the welder to work and back to the welder again. Cable sizes are increased for greater lengths primarily for the purpose of mini- mizing cable voltage drop.

Table A.1 Combined Length of Electrode and

Work Cables.

TOTAL COMBINED LENGTH OF ELEC-

TRODE AND WORK CABLES

AMPS

Up to 100 FT.

100-200 FT.

200-250 FT.

@60%

(Up to 30m)

(30m-61m)

(61m-76m)

Duty Cycle

 

 

 

400

2/0 AWG

3/0 AWG

4/0 AWG

 

 

 

 

MACHINE GROUNDING

Because this portable engine driven welder creates its own power, it is not necessary to connect its frame to an earth ground, unless the machine is connected to premises wiring (home, shop, etc.).

To prevent dangerous electric shock, other equipment powered by this engine driven welder must:

a)be grounded to the frame of the welder using a grounded type plug,

or

b) be double insulated.

When this welder is mounted on a truck or trailer, its frame must be securely connected to the metal frame of the vehicle. When this engine driven welder is con- nected to premises wiring such as that in a home or shop, its frame must be connected to the system earth ground. See the article on grounding in the latest U.S. National Electrical Code and the local code.

In general, if the machine is to be grounded, it should be connected with a #8 or larger copper wire to a solid earth ground such as a metal water pipe going into the ground for at least ten feet and having no insulated joints, or to the metal framework of a building which has been effectively grounded. The U.S. National Electrical Code lists a number of alternate means of grounding electrical equipment. A machine grounding

stud marked with the symbol is provided on the welding generator frame foot.

SAE-400 SEVERE DUTY

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Lincoln Electric IM727 manual Spark Arrestor, Welding Output Cables, Machine Grounding
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IM727 specifications

Lincoln Electric IM727 is a highly regarded machine in the welding industry, particularly known for its remarkable performance and innovative features. This versatile inverter-based welding machine has been designed to meet the demands of various welding applications while ensuring ease of use and efficiency.

One of the standout features of the IM727 is its advanced inverter technology. This technology allows for a more compact design while maintaining exceptional power output and energy efficiency. With a lightweight structure, the IM727 is easy to transport, making it an ideal choice for both field work and shop environments.

The IM727 is equipped with a wide range of welding processes, including MIG, TIG, and Stick welding. This versatility allows users to switch between different welding methods depending on the specific requirements of a project, making it highly adaptable to various materials such as steel, stainless steel, and aluminum. The intuitive interface provides straightforward controls, making the setup process quick and easy for both novice and experienced welders.

Another significant characteristic of the IM727 is its precise arc control, which enhances the quality of the welds. The machine features digital control circuitry that offers consistent arc stability, reducing spatter and improving the final appearance of the weld bead. This not only reduces the amount of post-weld cleanup required but also ensures stronger, more reliable welds.

Safety is a paramount concern in welding, and the IM727 comes equipped with several protective features. Overcurrent protection, thermal overload protection, and a built-in fan ensure that the machine operates safely and reliably. These features extend the machine’s lifespan and provide peace of mind to the user.

Furthermore, the IM727 is designed with user-friendly accessibility in mind. The front panel provides clear indicators and settings to facilitate easy operation, while the rugged construction ensures durability even in harsh working conditions.

In conclusion, Lincoln Electric IM727 stands out as a versatile welding machine with advanced inverter technology, multiple welding capabilities, and a focus on user safety and convenience. Its combination of portability, performance, and reliability makes it an excellent choice for professionals looking to elevate their welding operations. Whether used in a busy fabrication shop or on-site repairs, the IM727 is engineered to deliver exceptional results in diverse welding scenarios.
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