Power Fist SMART TIG AC/DC-200P Manuel De L'utilisateur page 17

V4.1
CHECK THE GAS FLOW FOR TIG WELDING
Checking that the gas is flowing does not require the welding unit to be turned ON or plugged in.
Avoid damaging the regulator by ensuring the regulator valve is closed before opening the cylinder valve. Stand to the
side of the cylinder when opening the valve to avoid being struck if the regulator is ejected. Ensure there are no
bystanders nearby that could be struck by an ejected regulator. A serious injury could result.
1. Slowly crack open the cylinder valve, then open all the way.
2. Tum the regulator adjustment knob counterclockwise until the knob is fairly loose.
3. Press the gas-test button (3) and press the torch switch. Gas will flow for 5 seconds.
4. Listen and feel for gas flowing from the end of the welding torch. If no gas is heard or felt, verify all steps in Install
the Shielding Gas Cylinder.
5. Turn the adjustment knob clockwise to increase gas flow; counterclockwise to reduce flow.
6. Set the gas flow to the Cubic Feet per Hour based on the nozzle size (see Table 2) and type of welding you are doing.
The CFH is an approximate setting. Adjust the CFH gas flow to match the welding conditions.
TIG Welding Gas Flow (Argon)
Welding Current Direct Current (DC) Positive Connection
Nozzle Size
10 to 100A 4 to 9.5 mm
101 to 150A 4 to 9.5 mm
151 to 200A 6 to 13 mm
ATTACHING THE GROUND CLAMP
1. Clean off dirt, oil, rust, scale, oxidation and paint from the workpiece where the ground clamp will be attached.
2. Attach the ground clamp to the workpiece. Connect the ground clamp directly to the workpiece and as close to the
weld as possible to prevent the welding current from traveling along an unexpected path, creating an electric shock
or fire hazard.
If this is not possible, connect the ground clamp to metal attached to the workpiece, but is not electrically
insulated from it. The metal must be of equal or greater thickness than the workpiece when using this alternate
attachment point.
TURN THE POWER ON
1. Plug the welding unit power cord into an outlet that meets the specified power requirements (see Specifications).
2. Press the power switch to turn the welding unit ON.
WARNING! The welding unit is 'live' once turned on and can cause serious electrical and burn injuries if
mishandled. Take all precautions listed in this manual when handling the welding unit.
SELECT THE WELDING PARAMETERS
1. Press the AC/DC selection key (1) to choose the type of current.
2. Select the welding parameters based on the welding task (see Control Panel).
WELDING
The welding unit is ready for use. Ensure all safety equipment and procedures are in place before proceeding. Welding
outside or in a draft may require a wind break to keep the shielding gas from being blown from the weld.
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SMART TIG AC/DC-200P Inverter Welding Machine
Flow Rate
4 ~ 5 L/min 9 ~ 11 CFH
4 ~ 7 L/min 9 ~ 15 CFH
6 ~ 8 L/min 13 ~ 17 CFH
Alternating Current (AC)
Nozzle Size Flow Rate
8 to 9.5 mm 6 ~ 8 L/min
9.5 to 11 mm 7 ~ 10 L/min
11 to 13 mm 7 ~ 10 L/min
8560237
13 ~ 17 CFH
15 ~ 21 CFH
15 ~ 21 CFH
Table 2
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