Installation, Warning, Warning caution – Lincoln Electric PRECISION TIG 275 SVM162-B User Manual

Page 12

A-6

INSTALLATION

PRECISION TIG 275

A-6

Recommended Cable Sizes for Combined Lengths of

Copper Work and Electrode Cables using 75

C Wire:

Machine Rating

0 to 100 Ft. 101 to 200 Ft 201 to 250 Ft

275A/40% #1 (42.4 mm2) 1/0 (53.5 mm2) 2/0 (67.4 mm2)

WORK CABLE CONNECTION

A 15ʼ (2/0) weld cable with clamp is available (K2150-1), or

included with the Precision TIG Welding Package model.

Otherwise, it is user provided.

With power source off, connect a separate work cable

to the 1/2-13 threaded "WORK" stud of the welder, and

secure a tight connection with the flange nut provided.

The work cable should be routed through the cable

strain relief hole provided in the base directly below the

welding output terminal.

Note: If the Precision TIG is equipped with an Under-

Cooler or Under-Storage unit, the coiled work cable

and clamp, or excess work cable length, may be con-

veniently stored in the drawer while remaining con-

nected.

STICK ELECTRODE CABLE CONNECTION

If manual stick welding is desired, with power source

off, connect a stick electrode cable to the 1/2-13

threaded "STICK Electrode" stud of the welder, and

secure a tight connection with the flange nut provided.

The electrode cable should be routed through the

cable strain relief hole provided in the base directly

below the welding output terminal.

DISCONNECT STICK ELECTRODE WELDING

CABLE WHEN TIG WELDING.

EVEN THOUGH HI-FREQ IS NOT APPLIED TO THE

PRECISION TIG STICK TERMINAL, IT WILL BE

ELECTRICALLY "HOT" TO WORK WHEN TIG

WELDING.

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1. Connect the terminal marked (below the recon-

nect panel) to an earth ground.

2. Connect the input leads to terminals marked L1 (U)

and L2 (V) on the reconnect panel. Use a single

phase line or one phase of a two or three phase line.

3. On multiple input voltage welders, be sure the

reconnect panel is connected for the voltage being

supplied to the welder.

Failure to follow these instructions can cause

immediate failure of components within the welder.

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

Welders are shipped connected for the highest input

voltage as listed on the rating plate. To change this

connection, designations on the reconnect panel LOW,

MID, and HIGH correspond to the name plated input

voltages of a triple voltage welder. Dual voltage

welders use only LOW and HIGH.

EXAMPLE: On a 208/230/460 volt welder, LOW is

208V, MID is 230V, and HIGH is 460V.

NOTE:

Export model has a voltage range for LOW and

MID connections: LOW is 220-230V, MID is 280-

400V and high is 415V.

Reconnect the jumper strap to the terminal stud corre-

sponding to the input voltage level used. Make sure all

connections are tight.

OUTPUT CABLES, CONNECTIONS AND

LIMITATIONS

• To avoid being startled by a high frequency

shock, keep the TIG torch and cables in good

condition

• Turn the power switch of the power source OFF

before installing adapters on cable or when con-

necting or disconnecting adapter plugs to power

source.

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Refer to Figure A.2 for the location of the WORK and

STICK terminals, as well as the TIG Torch connection

panel.

WARNING

CAUTION