7 | OPERATION | 7 |
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CONTROLS AND SETTINGS
All operator controls and adjustments are located on the front of the Square Wave TIG 175. Refer to Figure B.1 and corresponding explanations.
FIGURE B.1 - CONTROL PANEL
1
4
2 | 3 |
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5 |
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6 | 7 |
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1.POWER SWITCH & LIGHT
2.TIG/STICK SWITCH
3.POLARITY SWITCH
4.CURRENT CONTROL
5.OVER TEMPERATURE LIGHT
6.REMOTE CONTROL CONNECTOR
7.ELECTRODE/ GAS OUTPUT RECEPTACLE
8.WORK CABLE & CLAMP
8
1. POWER SWITCH & LIGHT - Turns power on | or | |
off | to the welder. When switched “ON”, the cool- | |
ing fan runs and the light will illuminate indicating that the power is on.
2.TIG/STICK SWITCH - Selects the mode of output, either TIG (GTAW) or Stick (SMAW). Refer to Welding in TIG Mode and Welding in Stick Mode later in this chapter for information on how the machine functions in each of these modes.
3.POLARITY SWITCH - Allows you to select between
welding in AC 
, DC 
polar- ity. In DC + polarity the electrode is positive and the work clamp is negative. Use DC + for most stick welding. In DC - the electrode is negative and the work clamp is positive. Use DC - for TIG welding stainless steel and mild steel. AC polarity is recom- mended for TIG welding aluminum.
CAUTION
Do not switch the polarity switch while welding or damage may result to the
machine.
4.CURRENT CONTROL - This control is active in both TIG and Stick modes. In Stick mode the current control sets the welding current. In TIG mode this control sets the maximum current. The Amptroltm will adjust the welding current from the machine mini- mum to this maximum setting.
5.OVER TEMPERATURE LIGHT - 
If the welder overheats due to blocked air flow, high ambient air temperature, or exceeded duty cycle, an internal thermostat will open disabling the welding output and this yellow light will illuminate. The cooling fans will continue to run to cool the unit during this time. The light will go out when the unit cools and the thermostat resets.
SQUARE WAVE TIG 175