Miller Electric DB1812R manual Maintenance & Troubleshooting, Routine Maintenance, Trouble Remedy

Page 9

SECTION 4 − MAINTENANCE & TROUBLESHOOTING

4-1. Routine Maintenance

Y Disconnect torch before maintaining.

 

40 Hours

 

 

Replace

Repair or

Clean and

replace

tighten weld

unreadable

cracked

terminals.

labels.

weld cable.

 

 

 

 

Replace cracked parts

 

 

 

 

Torch Body

Torch Cable

4-2.

Troubleshooting

 

 

NOTE

Before using troubleshooting table, check selection and preparation of tungsten

 

electrode according to Section 5.

 

 

 

 

 

 

Trouble

 

Remedy

 

 

 

 

Arc will not start. High frequency present

Check cable and work connections. Be sure weld circuit is complete (see Section 3-3).

and visible at the torch.

 

 

 

Check and be sure shielding gas is present.

 

 

 

 

Lack of high frequency; difficulty in es-

Select proper size and type tungsten. Properly prepare tungsten according to Section 5.

tablishing arc.

 

 

 

Check cables and torch for cracks or bad connections. Be sure that torch cables are not close to any

 

 

 

 

grounded metal. Repair or replace necessary parts.

 

 

 

 

 

Check torch consumables. Be sure collet and collet body are correctly installed and tightened (see Sec-

 

 

tion 3-1).

 

 

 

 

 

Check welding power source High Frequency control, and if necessary, check and adjust spark gaps.

 

 

Torch gas valve not working properly (if

Have Factory Authorized Service Station/Service Distributor check valve.

applicable).

 

 

 

 

 

No shielding gas flow from torch.

 

Be sure valves on gas supply are open.

 

 

 

 

 

Check cable for kinks or blockage.

 

 

 

 

 

Check and tighten all gas supply fittings.

 

 

 

 

 

Check cables and torch for cracked insulation or bad connections. Repair or replace (see Section 4-1).

 

 

Tungsten electrode oxidizing and not re-

Shield weld zone from drafts.

maining bright after conclusion of weld.

 

Increase postflow time.

 

 

 

 

 

 

 

Increase gas flow rate. Check manufacture’s recommendations.

 

 

 

 

 

Check and tighten all gas fittings.

 

 

 

 

 

Check gas valve and flow meter/regulator.

 

 

 

 

 

Select proper size and type tungsten. Properly prepare tungsten (see Section 5).

 

 

Excessive tungsten electrode con-

Select proper size and type tungsten. Properly prepare tungsten according to Section 5.

sumption.

 

 

 

Check polarity setting on welding power source (see welding power source Owner’s manual).

 

 

 

 

 

 

 

Check for proper gas flow rate. Check manufacture’s recommendations.

 

 

 

 

 

If torch is water cooled, check torch and cables for water leaks. Repair or replace if necessary (see Sec-

 

 

tion 4-1).

 

 

 

ENGLISH

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Contents Diamondback Series Gtaw Torches Table of Contents −SAFETY Precautions for Gtaw Torches − Read Before Using Symbol UsageGtaw Torch Hazards About Pacemakers EMF Information− Specifications SpecificationsDuty Cycle Required Torch Parts And Torch Assembly − InstallationInternational Style Connector Assembly Installing TungstenConnecting Torch Connections Routine Maintenance − Maintenance & TroubleshootingTroubleshooting Disconnect torch before maintaining HoursEssary DC − Argon − Elec AC − Argon AC − Argon − Amperage Range Gas Type PolarityPreparing Tungsten Electrode For Welding − Guidelines for TIG Welding GtawPositioning The Torch Clamp as close to the weld as possiblePositioning Torch Tungsten For Various Weld Joints Torch Movement During WeldingTungsten Without Filler Rod Tungsten With Filler RodComplete Torch Assembly − Parts ListQuantity 198 English Page Support ServiceOwner’s Record

DB1812R, DB1825R specifications

The Miller Electric DB1825R and DB1812R are robust welders designed for professionals seeking superior performance and versatility in their welding applications. Both models reflect Miller Electric's commitment to innovation, combining advanced technology with practicality for optimal results in a variety of environments.

One of the main features of the DB1825R and DB1812R is their dual voltage capability, allowing operators to easily switch between 120V and 240V input power. This flexibility is essential for users who need to work in different locations or vary their power supply. They are also equipped with the latest inverter technology, which significantly enhances efficiency and reduces energy consumption while maintaining high output quality.

For welding processes, both models support MIG, Flux-Cored, TIG, and Stick welding, making them multifunctional options for various tasks. The DB1825R features a maximum output of 250 amps, while the DB1812R offers up to 200 amps, providing ample power for thick materials. The lightweight and compact design of both units enhances portability, making it easier for welders to transport them to job sites without compromising on performance.

Another significant characteristic of the DB1825R and DB1812R is their user-friendly interface. Each unit includes an intuitive digital display, which simplifies the setup process by providing real-time feedback on parameters such as voltage, wire speed, and amperage. This technology assists users in making quick adjustments, allowing for consistent and high-quality welds every time.

Durability is a key consideration in the design of both welders. Made with high-quality materials, these models are built to withstand the rigors of industrial environments. They also incorporate advanced cooling systems to prevent overheating, thus extending the lifespan of the equipment.

Moreover, both models are compatible with Miller's lineup of welding accessories, enabling users to expand their capabilities as needed. With features like built-in safety systems, including overload protection and thermal overload protection, welders can work with confidence knowing they are using reliable equipment.

In summary, the Miller Electric DB1825R and DB1812R bring a blend of power, versatility, and ease-of-use to the welding industry. Their advanced technology, durable construction, and user-friendly features make them ideal choices for professional welders looking to enhance productivity and achieve high-quality results in a range of welding applications.
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