6-3. Process/Contactor Switch

11 Process/Contactor Switch

! Weld output terminals are ener- gized when Process/Contactor switch is in a Weld Terminals Al- ways On position and the engine is running.

Use switch to select weld process and weld output on/off control (see table be- low).

Place switch in Remote On/Off Switch Required positions to turn weld output on and off with a device connected to the Remote 14 receptacle.

Place switch in Weld Terminals Always On positions for weld output to be on whenever the engine is running.

Use Stick mode for air carbon arc (CAC-A) cutting and gouging.

When switch is in Stick mode, select one of four arc drive (dig) settings to provide additional amperage during low voltage (short arc length) conditions and prevent “sticking” electrodes. Turn control from A to D to increase arc drive (dig) from min to max.

Use the Lift-Arc TIG mode for TIG (GTAW) welding using the Lift-Arc TIG starting procedure (see Section 6-4).

 

 

 

803 562 / 217 357

 

 

 

 

 

 

 

 

 

Process/Contactor Switch Settings

 

 

 

 

 

Switch Setting

Process

Output On/Off Control

Engine Auto Idle (Optional)

 

 

 

 

Remote On/Off Switch Re-

GTAW With HF Unit, Pulsing

 

 

quired −TIG HF Required Or

At Remote 14 Receptacle

Active

Device, Or Remote Control

Scratch Start

 

 

 

 

 

 

 

 

 

Remote On/Off Switch

Stick (SMAW) With Remote On/Off

At Remote 14 Receptacle

Active

Required − Stick

 

 

 

 

 

 

 

Remote On/Off Switch

MIG (GMAW)

 

 

Required − CV Feeder

At Remote 14 Receptacle

Active

w/Constant Speed Feeder

Using Remote

 

 

 

 

 

 

 

 

 

Weld Terminals Always On −

MIG (GMAW)

Electrode Hot

Active

Wire

w/Voltage Sensing Feeder

 

 

 

 

 

 

Weld Terminals Always On −

Stick (SMAW),

 

 

Air Carbon Arc (CAC-A) Cutting

Electrode Hot

Active

Stick

And Gouging

 

 

 

 

 

 

 

 

 

Weld Terminals Always On −

TIG Lift-Arc (GTAW)

Electrode Hot

Active

TIG Lift-Arc

 

 

 

 

 

 

 

OM-4433 Page 30

Page 34
Image 34
Miller Electric Big Blue 300 manual Process/Contactor Switch Settings

Big Blue 300 specifications

The Miller Electric Big Blue 300 is a powerful and versatile engine-driven welder that has become a popular choice for professionals in various industries. Designed to excel in both welding and generator applications, the Big Blue 300 provides reliable performance, advanced technology, and exceptional durability, making it suitable for demanding work environments.

One of the standout features of the Big Blue 300 is its impressive output capabilities. With a maximum welding output of 300 amps, this machine can handle a wide range of welding applications, from stick to TIG and MIG processes. The dual voltage output allows for versatility in the field, accommodating both 120V and 240V power requirements, ensuring you can power tools and equipment directly from the welder.

The Big Blue 300 is equipped with Miller's innovative Clean Air Technology, which ensures that the engine operates efficiently and produces fewer emissions. This feature not only meets environmental standards but also enhances the longevity of the machine. The cooling system is engineered to maintain optimal operating temperatures, extending the life of the engine and related components.

For ease of use, the Big Blue 300 features an intuitive control panel with easy-to-read gauges and simple adjustment settings, allowing operators to quickly set welding parameters. The built-in Fuel Gauge and Hour Meter provide real-time information about fuel levels and usage, enabling efficient operation and maintenance planning.

Another notable characteristic of the Big Blue 300 is its rugged construction. Built to withstand harsh job site conditions, the machine features a durable frame and heavy-duty components that can endure the rigors of everyday use. The oversized wheels and solid axle design enhance portability, making it easy to transport across various terrains.

Additionally, the Big Blue 300 is designed for quiet operation, making it suitable for locations where noise levels are a concern. Its low decibel rating ensures that it won’t disturb the work environment, contributing to a more comfortable and productive atmosphere.

Overall, the Miller Electric Big Blue 300 is a robust engine-driven welder that combines power, efficiency, and portability. Whether working on construction sites, maintenance tasks, or fabrication projects, this machine delivers exceptional performance and reliability, making it a valuable tool for professionals who demand the best in their equipment.