![](/images/new-backgrounds/1260570/26057049x1.webp)
OPERATION | ||
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TIG WELD CYCLE CHART
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| 2 or |
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| With PULSE ON |
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| Trigger |
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| Trigger |
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| No Pulsing |
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| Closed |
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| 1ST Open |
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| During Upslope Time |
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| after |
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| SEE ITEM 12 |
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| SEE ITEM 12 |
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| or |
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| Opened |
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| Downslope Time |
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| When Downslope |
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| SEE ITEM 12 |
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| SEE ITEM 12 |
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| Drops Below |
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MAXIMUM OUTPUT |
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| Background Setting |
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| SETTING |
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Adjustable |
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| LEVEL | ||||||
| SEE ITEM 6 |
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| Advanced | |||||||||
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| Panel Select: | ||||
Amptrol or Remote |
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| Mach. Min. | |||||||||||
(PEAK) Range |
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| or | ||||||||||
| SEE ITEM 6 & 7 |
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| MIN. Setting | |||||||||||
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| PULSE FREQ. |
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| % ON TIME |
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| (as w/o Panel) | ||||||||||||||||||||||||||||||||||
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| Adjustable |
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| Adjustable |
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MINIMUM OUTPUT |
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| SEE ITEM 7 |
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(Start) SETTING |
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| SEE ITEM 14 |
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| SEE ITEM 15 |
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Adjustable |
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| SEE ITEM 7 |
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| BACKGROUND |
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| Adjustable |
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| MIN.Setting |
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| SEE ITEM 16 |
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| PREFLOW |
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| UPSLOPE |
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| DOWNSLOPE |
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| Fixed 0.5 sec |
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| Fixed<0.5 sec |
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| Adjust 0 |
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| or x2 |
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| w/o Amptrol |
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| w/ Advan. Panel |
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| SEE ITEM 9 |
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| SEE ITEM 7 |
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| (Fixed 0 sec w/o) |
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| SEE ITEM 9 |
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| SEE ITEM 17 |
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| START TIME |
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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
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 MicroStartTM 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
USING THE START PEDAL FOOT AMPTROL (K870-1)
To further enhance reliability of consistently obtaining this minimum level just after the Amptrol’s start switch is closed, or just before it opens for
Currently available TIG foot pedal controls combine the arc start switch actuation in the same pedal action with the output control variable resistance. This technique provides no independent tactile feel of where the arc start switch actuates, and at what control level, for con- sistent TIG starting. Nor does it provide a way for con- sistent