Operation, Controls and settings, Opera t or’s manual – Lincoln Electric IMt10143 MARQUETTE AutoPro 140_180 User Manual

Page 11

B-2

OPERATION

B-2

AUTOPRO™ (140/180 MODELS)

CONTROLS AND SETTINGS

This machine has the following controls:

See Figure B.1
1. POWER SWITCH – Turns power on and off to the

machine.

2. ARC VOLTAGE CONTROL – This knob sets the

output voltage of the machine. Along with wire feed
speed (WFS), this control sets a weld procedure.
Refer to the procedure decal on the wire drive com-
partment door to set a welding procedure based on
the type of material and thickness being welded.

3. WIRE FEED SPEED CONTROL (WFS) – This

knob sets the speed that the machine feeds wire.
Along with arc voltage, this control sets a weld pro-
cedure. Refer to the procedure decal on the wire
drive compartment door to set a welding procedure
based on the type of material and thickness being
welded.

See Figure B.2
4. GUN TRIGGER – Pressing the trigger activates the

wire drive and energizes the output of the machine.
Press the trigger to weld and release the trigger to
stop welding.

5. WELDING GUN – Delivers wire and welding cur-

rent to the work piece.
a. Gun Liner – wire travels through the liner from

the wire drive. The gun liner will feed .025” to
.035”(0.6mm to 0.9mm) wire.

b. Contact Tip – provides electrical contact to the

wire.

c. Nozzle – When flux-cored welding, the black noz-

zle protects the mounting threads on the gun.
When MIG welding, the nickel nozzle funnels the
shielding gas to the weld.

6. WORK CLAMP & CABLE – Clamps to the work

piece being welded and completes the electrical
welding circuit.

7. GUN TRIGGER CONNECTOR RECEPTACLE –

Plug the 4 pin gun trigger connector into this recep-
tacle.

FIGURE B.1

FIGURE B.2

.035"(0.9mm)

NR-211-MP

WIRE SPOOL

OPERA

OR’S MANUAL