Miller Electric Axcess 300 Troubleshooting, Removing Cover and Measuring Input Capacitor Voltage

Models: Axcess 300

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SECTION 9 − TROUBLESHOOTING

9-1. Removing Cover and Measuring Input Capacitor Voltage

!

Tools Needed:

900 Volts dc can be present on the capacitor bus and significant DC voltage can remain on capacitors after unit is Off. Always check the voltage on both inverter assemblies as shown to be sure the input capacitors have discharged before working on unit.

Turn Off welding power source, and disconnect input power.

Remove cover

1Interconnect Board PC2

2Voltmeter

5/16 in

1

2

+ lead to left bus terminal, − lead to right bus terminal

Measure the dc voltage across the

+bus terminal and − bus terminal on PC2 as shown until voltage drops to near 0 (zero) volts. Measure input capacitor voltage on inverter assembly before proceeding.

3 Typical Bleeder Resistor

An example of a typical bleeder resistor is shown on this page.

Proceed with job inside unit. Reinstall cover when finished.

3

Typical Bleeder Resistor

25 to 1000 ohm, 5

watt resistor

#16 AWG 1000 volts dc insulation rating, approx 3 in (76 mm) leads

802 985 / Ref. 803 670-A

OM-230 032 Page 33

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Miller Electric Axcess 300 manual Troubleshooting, Removing Cover and Measuring Input Capacitor Voltage

Axcess 300 specifications

The Miller Electric Axcess 300 is a cutting-edge power source designed for advanced welding applications. This machine stands out in the marketplace for its unique combination of features, performance, and versatility. Ideal for industrial environments, the Axcess 300 is particularly well-suited for multi-process welding, allowing users to engage in MIG, TIG, and Stick welding with ease.

One of the hallmark features of the Axcess 300 is its exceptional output capability. With a maximum output of 300 amps, this machine is equipped to handle a variety of welding tasks ranging from light to heavy fabrication. The machine can easily accommodate materials of varying thicknesses, making it an exceptional choice for diverse welding projects.

Incorporating Miller's advanced Auto-Set technology, the Axcess 300 simplifies the setup process for welders. With just a few inputs from the operator, the machine intelligently adjusts itself to provide optimal welding conditions, ensuring high-quality results without the need for extensive expertise. This feature is especially beneficial for less experienced welders, allowing them to produce excellent welds with minimal guidance.

The Axcess 300 employs Miller's innovative X-Mode technology, which helps to maintain a stable arc even when working with challenging materials or in fluctuating conditions. This enhances arc control, minimizing defects such as spatter and burn-through. Moreover, the machine's extensive voltage range allows for superior performance over different welding procedures, contributing to more efficient operation overall.

Enhanced portability is another important characteristic of the Axcess 300. Its compact design and lightweight construction make it easy to transport, allowing operators to quickly move the machine to different job sites. The durable enclosure protects against the rigors of industrial use, ensuring a long operational lifespan.

Safety features integrated into the Axcess 300 include a built-in thermal overload protection system, which prevents the machine from overheating during heavy usage. Furthermore, the intuitive interface with easy-to-read displays allows for straightforward operational controls, enabling welders to focus on their work without unnecessary distraction.

In summary, the Miller Electric Axcess 300 is a versatile, powerful, and user-friendly welding power source that combines advanced technology with practical features, making it an invaluable asset for professionals in various sectors.