The Lincoln Electric Precision Tig 275 is a high-performance TIG welding machine designed for precision welding applications. This model offers advanced features and reliability, making it ideal for both professional and industrial use. Ensure optimal performance with regular maintenance and quality spare parts.

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Manual for Lincoln Electric Precision Tig 275

MAINTENANCE RESOURCES

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Documents & Manuals

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Tensioning Guide
Belt-diagram
C-120 pulleys
+ 13 more

Work Order Templates

Pre-built workflows to keep your asset running smoothly.

Daily Electrical System Inspection
Replace Roller and Pulley
Install Engine B-120
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Procedures

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Motion Industries
Applied Industrial Technologies
Electrical Brothers
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Parts

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Drive Motor
B2 Rollers
Tensioning System
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Lincoln Electric Precision Tig 275

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Maintenance Plans for Lincoln Electric Precision Tig Model 275

Integrate maintenance plans directly into your work orders in MaintainX.

Spark Gap Adjustment

Warning: Turn off the input power before starting the procedure

Upload a photo of the access panel on the right case side

Enter the spark gap spacing measured with a feeler gauge

Is the spark gap spacing within the factory set range of 0.015 inches (0.4 mm)?

If adjustment is required:

Did you loosen the Allen head screw on one of the aluminum blocks?

Enter the new spark gap spacing after adjustment

Did you tighten the screw in the new position?

If spark gap is correct:

Run this procedure

Precision TIG Routine and Periodic Maintenance

WARNING! ELECTRIC SHOCK can kill. Only qualified personnel should perform this maintenance. Turn the input power OFF at the disconnect switch or fuse box before working on this equipment. Do not touch electrically hot parts.

Is the machine environment clean and free from dust and dirt?

Upload a photo of the machine environment

Are the welder output and control cables free from fraying, cuts, and bare spots?

Upload a photo of the welder output and control cables

Enter the spark gap spacing

Note: The fan motor has sealed ball bearings which require no maintenance.

Sign off on the Precision TIG Routine and Periodic Maintenance

Run this procedure

Meter Calibration Adjustment

Warning: This procedure requires trained personnel with PPE!

Meter Board is digital and has no calibration capability?

Ammeter Calibration Trimmer (R5) is located on the Control PC Board (left of center near the top of the board)

Set to TIG mode with DC- polarity and LOCAL control. Without closing the arc start switch, preset the Maximum Output panel control so the panel digital Meter reads about 200 amps.

Using a DC (avg.) test ammeter with at least 1% accuracy at up to 300 amps, connect it to measure the DC current through a short weld cable shorting out the WORK (+) to ELECTRODE (-) studs on the front stud panel. Remove the TIG torch, if connected.

Close the arc start switch just long enough to compare the panel Meter reading to that of the test ammeter. The short circuit current readings should match within 4%+/-2A. If not, adjust the trimmer so that the panel meter accuracy is corrected.

Voltmeter Calibration Trimmer (R2) is located on the Control PC Board (right of center near the top of the board)

To prevent maximum OCV output (which is not precise for voltmeter checking) disconnect the SCR gate lead plug from receptacle J4 on the lower left corner of the Control PC board.

Set to TIG mode with DC- polarity without closing the arc start switch.

Run this procedure