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7
OPERATION
7
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 - , or 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.
Do not switch the polarity switch while
welding or damage may result to the
machine.
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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 Amptrol
tm
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 PRO
CONTROLS AND SETTINGS
All operator controls and adjustments are located on the front of the Square Wave TIG 175 PRO. Refer to Figure
B.1 and corresponding explanations.
FIGURE B.1 - CONTROL PANEL
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
CAUTION
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