Operation, B-11, Tig weld cycle chart – Lincoln Electric PRECISION TIG IM936 User Manual

Page 26

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B-11

OPERATION

B-11

SETUP GUIDELINES FOR TIG WELDING

WITH AN AMPTROL

Both the Hand and Foot Amptrols work in a similar

manner. They are meant to be used for remote current

control for TIG welding using the machine’s 2-Step

trigger mode (See Item 12).

The Amptrol is capable of controlling the output of the

Precision TIG over the range between the level preset

by the Minimum Output control when the Amptrol is at

its inactivated state, and the level preset by the

Maximum Output control when the Amptrol is at fully-

activated state.

It is important to note that even with the Precision TIG’s

new MicroStart

TM

Technology, some tungstens may be

difficult to start at the low (2 amps) minimum rating of

the machine. Rather than guessing where to depress

the Amptrol to start the arc reliably, the Minimum

Output control allows presetting the exact level, so

reliable starts, as well as minimum crater-fill levels, can

be consistently obtained at the minimum Amptrol (inac-

tivated ) state. FIGURE B.6 shows Precision TIG setup

for TIG welding with an Amptrol.

PRECISION TIG 375

TIG WELD CYCLE CHART

SEE ITEM 12

SEE ITEM 12

SEE ITEM 7a

SEE ITEM 12

SEE ITEM 12

SEE ITEM 7

SEE ITEM 9

SEE ITEM 17

SEE ITEM 16

SEE ITEM 15

SEE ITEM 15

SEE ITEM 14

SEE ITEM 7a

SEE ITEM 12

SEE ITEM 7a

SEE ITEM 7

SEE ITEM 6

SEE ITEM 6 & 7

SEE ITEM 12 & TIG

Welding Features

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