Tweco ArcMaster 201 TS, Руководство по обслуживанию

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TWECO 201TS OPERATION
Operation 4-8 Manual 0-5150
3. On all cylinders, except acetylene, open the valve completely to seal the valve packing. On gaugeless
regulators, the indicator will register the cylinder contents open.
4. Attach the desired downstream equipment.
4.07 Leak Testing the System
Leak test the system before putting into operation.
1. Be sure that there is a valve in the downstream equipment to turn off the gas flow.
2. With the cylinder valve open, adjust the regulator to deliver the maximum required delivery flow rate.
3. Close the cylinder valve. Watch to see if the high pressure or contents gauge drops, if it does you have a
leak in the connection between the regulator and the cylinder.
4. Once leak testing has been performed and there are no leaks in the system, slowly open the cylinder valve
and proceed.
!
WARNING
If a leak has been detected anywhere in the system, dis continue use and have the system repaired.
DO NOT use leaking equipment. Do not attempt to repair a leaking system while the system is under
pressure.
4.08 Lift Start TIG with the Tweco 201TS
Make sure that you have the appropriate shielding gas set up, attach the shielding gas hose from the torch to a
flow meter regulator on the cylinder. In this case we will be using Argon set at a flow rate of around 20 CFH. You
will need to use a TIG torch that has a gas valve, and is properly adjusted. (Tungsten, Collet, Collet body, nozzle,
and back cap).
1. Attach the TIG torch lead to the (-) terminal of the power supply.
2. Attach the work lead with ground camp to the (+) terminal of the power source, and your work piece.
NOTE
About tungsten selection for this power supply, a 2% Thoriated tungsten is generally used for DC
straight polarity welding. Point the tungsten by grinding a taper on it about 2½ times the diameter of
the tungsten used and grind a slight flat on the end, this will help stabilize the arc.
To TIG weld with the Tweco 201TS you will need to:
1. Open the torch valve and adjust the argon flow and close the valve.
2. Turn on the power supply. The switch is located on the rear panel.
3. Set the weld process to lift TIG. Set the anticipated amperage needed for the weld on the panel and turn
on the torch valve, touch the tungsten to the work, as you lift the tungsten off the work, the arc will start.
NOTE
An alternate method is to set the edge of the gas cup on the work piece. Rotate the torch so the tungsten
comes in contact with the work. Roll the torch back to lift the tungsten off the work and the arc will start.