Lincoln Electric IM759 Changing Machine Over to Feed Other Wire Sizes, Welding with Gmaw MIG

B-6 OPERATION B-6

The WELD-PAK 3200HD is suitable for .035" alu- minum wire and .030" stainless wire. Refer to Table B.1 for recommended procedure settings (requires K499 Argon Regulator Kit).

TABLE B.1

		Shielding	Voltage/Wire Speed
Process	Welding Wire	Gas	16 ga	14 ga	12 ga	10 ga
MIG DC+	.035 Dia	100% Argon	B-5	D-7	D-9	D-9
	4043 Aluminum
	Wire
MIG DC+	.035 Dia	100% Argon	B-5	C-7	D-9	D-10
	5356 Aluminum
	Wire
MIG DC+	.030 Dia	98% Argon/	A-3	C-6	D-7.5	D-7.5
	308L Stainless	2% Oxygen
	Steel Wire

2.If using a regulator with an adjustable flow meter, close the gun trigger and adjust the flow to give 15

–20 cubic ft per hour (CFH) (7 – 10 I/min) [use 20

–25 CFH (10 – 12 I/min) when welding out of

position or in a drafty location for CO2]. For argon mixed gas, trigger to release gas pressure, and adjust the flow to give 25 – 30 CFH (12 – 14 I/min).

3.Keep the cylinder valve closed, except when using the WELD-PAK 3200HD. When finished welding:

a) Close the cylinder valve to stop gas flow.

b) Depress the gun trigger briefly to release the pressure in the gas hose.

c) Turn off the WELD-PAK 3200HD.

CHANGING MACHINE OVER TO FEED OTHER WIRE SIZES

The WELD-PAK 3200HD is shipped from the factory ready to feed 023”-.025” (0.6 mm) diameter wire. To operate the WELD-PAK 3200HD with other sizes of wire, it is necessary to change the contact tip and change the drive roll over to other sizes. Refer to Changing the Contact Tip and Changing the Drive Roll, in the MAINTENANCE section, for specific infor- mation on these procedures.

WELDING WITH GMAW (MIG)

Shielding Gas

When using the GMAW process, obtain and install a gas regulator and hose kit; K463 (for CO2) or K499 (Argon mixed) gas regulator and hose kit.

1.For CO2, open the cylinder very slowly. For argon- mixed gas, open cylinder valve slowly a fraction of a turn. When the cylinder pressure gauge pointer stops moving, open the valve fully.

WELDING WITH FCAW (Innershield)

When using the FCAW process, the correct drive roll and electrode polarity must be used. See Work Cable Installation in INSTALLATION section for changing the polarity.

OVERLOAD PROTECTION

Output Overload

The WELD-PAK 3200HD is equipped with a circuit breaker and a thermostat which protects the machine from damage if maximum output is exceeded. The cir- cuit breaker button will extend out when tripped. The circuit breaker must be manually reset.

Thermal Protection

The WELD-PAK 3200HD has a rated output duty cycle of 20%. If the duty cycle is exceeded, a thermal protector will shut off the output until the machine cools to a reasonable operating temperature. This is an automatic function of the WELD-PAK 3200HD and does not require user intervention. The fan continues to run during cooling.

Electronic Wire Drive Motor Protection

The WELD-PAK 3200HD has built-in protection for wire drive motor overload.

WELD-PAK 3200HD