B-5

OPERATION

B-5

 

 

 

ENGINE OPERATION

CAUTION

Do not adjust the high idle engine speed (rpm) above the factory setting specification.

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

STARTING INSTRUCTIONS

Be sure all Pre-Operation Maintenance has been per- formed. (See INSTALLATION section of this manual). To start the engine, place ignition toggle switch in the “ON” position. Engage the starter button. When the engine starts running, observe the engine oil pressure. If no pressure shows within 30 seconds, stop the engine and consult the engine operating manual. To stop the engine, place the ignition toggle switch in the “OFF” position.

When an engine is started for the first time, some of the oil will be needed to fill the passages of the lubri- cating system. Therefore, on initial starting, run the engine for about five minutes and then stop the engine and recheck the oil. If the level is down, fill to the full mark again. The engine controls were properly set at the factory and should require no adjusting when received.

For added safety always operate the welder with the doors closed. Further, leaving the doors open changes the designed air flow and may cause engine or gener- ator overheating.

Cold Weather Starting

WARNING

Never use any other starting aids, such as ether, when using the “Thermostart” system.

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

When overnight temperatures are between 10°F(12°C) and freezing, use the standard “Thermostart” starting system installed on all engines. Follow the instructions on the start panel nameplate and in the engine manu- al shipped with the welder. With fully charged batter- ies and the proper weight oil, the “Thermostart” system operates satisfactorily even down to about 0°F (-18°C).

BREAK-IN PERIOD

ENGINE

The engine used to supply power for your welder is a heavy duty, industrial engine. It is designed and built for rugged use. It is very normal for any engine to use small quantities of oil until the break-in is accom- plished. Check the oil level twice a day during the break-in period (about 100 running hours).

IMPORTANT: IN ORDER TO ACCOMPLISH THIS BREAK-IN, THE UNIT SHOULD BE SUBJECTED TO HEAVY LOADS, WITHIN THE RATING OF THE MACHINE. AVOID LONG IDLE RUNNING PERIODS.

TYPICAL FUEL CONSUMPTION

The typical fuel consumption of the SAE-400 SEVERE DUTY for various operating scenarios is shown below:

Low Idle - No Load

.35 gal./ hr.

1100 RPM

(1.32 L./hr.)

High Idle - No Load

.75 gal./hr.

1800 RPM

(2.84 L./hr.)

Welding Load

1.92 gal./hr.

400 Amps, 40 Volts

(7.27 L./hr.)

Auxiliary Power

.96 gal./hr.

3000VA

(3.63 L./hr.)

SAE-400 SEVERE DUTY

Page 16 Page 18
Page 17
Image 17
Lincoln Electric IM727 manual Engine Operation, Typical Fuel Consumption, Starting Instructions, BREAK-IN Period
Page 16 Page 18

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.
Top Page Image Contents