Lincoln Electric Pro 100 User Manual download pdf (Page 19)

B-6

OPERATION

B-6

lower cost. A mixed gas consisting of 75 to 80%

Argon and 20 to 25% CO

is recommended for weld-

ing on heavier gauge [12 gauge (2,5 mm) for exam-

ple] steel.

The PRO 100 is suitable for .035" aluminum wire and

.030" stainless wire. Refer to Table B.1 for recom-

mended procedure settings. (Requires K610-1 MIG

Conversion Kit and K664-1 Aluminum - Stainless

Feeding Kit.)

It is important when changing between welding

with steel wire and aluminum to exchange feeding

components due to the lubricant applied to steel

wire. Failure to do so may result in contaminated

welds when welding aluminum.

------------------------------------------------------------------------

TABLE B.1

CHANGING MACHINE OVER TO

FEED OTHER WIRE SIZES

The PRO 100 is shipped from the factory ready to

feed 0.035” (0,9 mm) diameter cored wire. To operate

the PRO 100 with other sizes and types of wire, it is

necessary to change the contact tip, drive roll and

cable liner configuration. Refer to the MAINTENANCE

section, for component configuration and replacement

procedures.

WELDING WITH GMAW (MIG)

Shielding Gas

When using the GMAW process, obtain and install the

K610-1 MIG Conversion Kit and a cylinder of carbon

dioxide (CO

) or argon-carbon dioxide mixed shield-

ing gas. Refer to the ACCESSORIES section for more

information about installing the K610-1 Kit for use with

the PRO 100. Also see the MAINTENANCE section

for proper contact tip, nozzle liner and drive roll config-

uration.

1. For CO

, 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.

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 CO

]. For argon

mixed gas, trigger to release gas pressure, and

turn off the adjust the flow to give 25 – 30 CFH

(12 – 14 I/min).

3. Keep the cylinder valve closed, except when using

the PRO 100. 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 PRO 100.

OVERLOAD PROTECTION

Output Overload

The PRO 100 is equipped with a circuit breaker and a

thermostat which protects the machine from damage if

maximum output is exceeded. The circuit breaker but-

ton will extend out when tripped. The circuit breaker

must be manually reset.

Thermal Protection

The PRO 100 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 reason-

able operating temperature. This is an automatic func-

tion of the PRO 100 and does not require user inter-

vention. The fan continues to run during cooling.

Electronic Wire Drive Motor Protection

The PRO 100 has built-in protection for wire drive

motor overload.

PRO 100

CAUTION

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

1 2 ... 14 15 16 17 18 19 20 21 22 23 24 ... 46 47

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Lincoln Electric Pro 100 User Manual Page 19

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