Limitations, Controls and Settings | Lincoln Electric IM648-B

B-4	OPERATION	B-4

LIMITATIONS

Do not exceed the output current and duty cycle rating of machine. Do not use the PYTHON for pipe thawing.

CONTROLS AND SETTINGS

	Reset	Gas
Status		Purge	Gas
	Button	Button
Indicators			Regulator

			Gauge

2. GAS PRESSURE SETTINGS.

•Push-in and hold the Purge button to check or set the gas pressure. Pull the pressure regulator cap out and turn it to set the pressure.

-Adjust the gas regulator for 70 PSI for 25’ torch- es or 75 PSI for 50’ torches.

-Release the Purge button.

-The gas will immediately turn off. The pressure gage may show an increase in pressure after the air turns off but this is normal. Do NOT reset the pressure while the air is NOT flowing.

3. PREPARING TO CUT.

Output

Control

Knob

Consumable Storage (behind door)

XXXX XXXX XXXX XXXX

Gas

Regulator

Knob

PYTHON

• When ready to cut, place the torch near the work,
make certain all safety precautions have been
taken and pull the trigger.
-	The air will flow for a preflow time of 2 seconds
	and the pilot arc will start. (This is true unless
	the machine is in postflow, then the preflow time
	is skipped and the pilot arc will start immediate-
	ly.)
-	The pilot arc will run for 3.0 seconds and shut off
	unless the arc is brought in contact with the work
	and the arc is transferred. Avoid excessive pilot

Torch Connector

Work Cable

Input

Power

Switch

Interface

Connector

arc time by transferring the arc to the workpiece

quickly to improve parts life.

- When the arc is brought within 1/4" from the

work piece: the arc will transfer, the current will

ramp up to the setting on the control panel, and

the cut can last indefinitely (or until the duty

When preparing to cut or gouge, position the machine as close to the work as possible. Make sure you have all materials needed to complete the job and have taken all safety precautions. It is important to follow these operating steps each time you use the machine.

•Turn the machine's ON/OFF POWER SWITCH to OFF position.

•Connect the air supply to the machine.

1.TURN THE MAIN POWER AND THE MACHINE POWER SWITCH ON.

-The fan should start.

-The pre-charge circuit will operate for 3 seconds, then the green "Power" LED should turn on.

-If the "SAFETY" LED is lit, push the "Reset" but- ton. If there is no problem, the LED will go off. If there is a problem, refer to Step "SAFETY LED" in this section.

•Be sure that the work lead is clamped to the work- piece before cutting.

•Set the output current control knob at maximum position for high cutting speed and less dross forma- tion. Reduce the current, if desired to reduce the kerf (cut) width, heat affected zone or travel speed as required.

cycle of the PYTHON is exceeded). Do not

touch the nozzle to the work when cutting with

the control panel setting above 45 Amps or

damage to the consumables will result.

• Pierce the work piece by slowly lowering the torch

onto the metal at a 300 angle away from the opera-

tor. This will blow the dross away from the torch tip.

Slowly rotate the torch to vertical position as the arc

becomes deeper.

	TORCH AT 300 ANGLE
	TO PIERCE
	ROTATE TO
300	900 ANGLE TO CUT
	900
	VERTICAL ANGLE
	FOR CUTTING
	CUT