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Tweco Fabricator 141i Quick Start User Manual

Quick start guide, Mig welding, Fabricator 141i

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FOLD LINE ‘A’

FOLD LINE ‘B’

Nut with Nylon Insert

(This sets Brake Tension)

8” (200mm)

diameter spool *

Wire
Direction

1. INSTALL Wire Spool

Wire Drive Tension Screw

Arm

Outlet Guide

Inlet Guide

Wire Drive Tension Screw

Pressure Roller Arm

Feed Wire

TILT

A) Drive Roll installed on machine is .030". If running other wire sizes and wire types
please see Operators Manual.
B) Install Spool
• Open side panel of 141i and mount the 8” diameter Wire Spool on Spool Hub.
Ensure Wire Spool seats onto Spool Hub Pin. (See Operator’s Manual for
alternate 8“ and 4” diameter spool set up.)
• Hand feed the wire from the spool into the Inlet Guide. (Wire is under tension.)
• Tilt the Wire Drive Tension Screw Arm toward the front of the machine and
feed the wire through the Outlet Guide

until it comes out the front of the 141i about 3”.

• Return the Wire Drive Tension Screw Arm to the upright position locking the
Pressure Roller Arm underneath it. Ensure wire is seating in drive roll groove.
• Turn Wire Drive Tension Screw clockwise until drive roll grips wire.

Drive Roll and Drive Roll Knob

Drive Roll

Feed Wire
System

{

TRIGGER

WIRE

MIG GUN

TRIM

2. SETUP Gas Regulator

Cylinder Valve

Regulator

A) Attach the regulator to the cylinder valve and tighten securely with a wrench.
B) Connect the 141i gas hose to the gas outlet on the regulator.
C) Purge the regulator and 141i gas hose by SLIGHTLY opening the
cylinder valve for 3-to-5 seconds and then close.
D) Connect the 141i gas hose to the gas port on the back of the 141i.
Wrench tight to 1/4 turn.
E) Slowly and carefully open the cylinder valve until the maximum pressure shows
on the High-Pressure gauge.
F) Adjust regulator knob on the Low-Pressure gauge so the needle is
in the MIG, (Green Section).

Cylinder Valve

g

High-Pressure

Low-Pressure

Gas Outlet

Tighten with

wrench

Regulator
Adjusting
Knob

Clamp to work piece
before starting to weld.

Work Clamp

Work Clamp
Connector

A) Select MIG PROCESS.
B) Determine what material type and thickness you plan to weld (24 ga. through 1/16” thickness).
C) Determine what wire type and diameter you plan to use (.030”recommended).
D) Determine what shielding gas you plan to use (75% Ar/25% CO

2

recommended).

E) Quick Start Parameters:
for 16 gauge (1.6 mm)

1) Wirespeed Display:

220

2) Voltage Display:

16.0 (16V)

3) Inductance Setting: 10 (

+HARD)

Otherwise, refer to your ‘Recommended Settings Chart’ below for
Wirespeed, Voltage, and Inductance Settings.
F) Attach Work Clamp connector to 141i.
Check for Positive polarity setting — see picture.
G) Attach Work Clamp to work piece.

8 Pin Connector

MIG Gun Connector

C) Plug the 141i into a 115V, 15A or 20A outlet.

A) Loosen Thumb Screw (located inside side panel), then fit the wire into the MIG Gun
connector as you slip the Connector into the MIG Gun Adaptor, then tighten the
Thumb Screw (clockwise).
B) Fit the 8 pin plug into the 8 pin socket and rotate
threaded collar fully clockwise to lock the plug into position.

3. SETUP MIG Gun

4. SET Welding Parameters

OPTIONAL:

Installing or Replacing Nozzle or Tip

1.) Unplug the 141i.
2.) Unscrew worn nozzle and pop out the tip.
3.) Slide new contact tip into the conductor tube end.
(Tip does not screw in.)
4.) Replace the nozzle. Hand tighten (Nozzle secures tip).
NOTE: For proper operation the nozzle MUST be tight.
5.) Trim wire to desired stick out.

NOZZLE

TIP

TRIGGER

MIG GUN

D) Turn the Power Switch ON. (Located on the rear of the machine.)
E) Select

MIG PROCESS.

F) Select

2T for TRIGGER.

G) Turn

WIRESPEED Dial to Five. (Halfway between 4 and 6 marks)

H) Switch the LOCAL/REMOTE switch inside the wire feed
compartment to LOCAL.
Then switch the MIG GUN/SPOOL GUN switch to MIG GUN.

I) Lay the MIG Gun out so the cable is straight with NO twists or kinks.
• Unscrew nozzle and pop out the tip from MIG gun.
• Point the MIG Gun AWAY from your body. Press and hold the
MIG Gun trigger. The wire will advance through the cable and
out the MIG Gun conductor tube. Release the MIG Gun trigger.
• Reinstall MIG Gun tip and nozzle.
• Trim the wire at the MIG Gun nozzle to desired stick out.
• Close the 141i side panel.

*Recommended
Quick Start
Parameters

You may begin welding.

G

141i Shut Down

A) Turn the Power Switch OFF.
(Located on the rear of the machine.)
B) Turn cylinder valve OFF and
bleed downstream gas line by loosening
hose at back of 141i.

When finished welding, remember to
properly shut down the 141i.

T

I

G

H

T

E

N

Spool Hub
Pin hole

Side Panel

MIG Gun Adaptor
(outside surface)

MIG Gun
Connector

Outlet Guide
(inside view)

MIG Gun Locking Screw

Thumb Screw

8 pin socket

8 pin plug

Wire

Recommended Settings Chart

(For your reference this chart is also on the inside side panel.)

.030

0.8

.030” (0.8 mm) Stamp

Tack Weld

MIG Gun

Quick Start Guide

MIG WELDING

(0.030” Solid Wire)

MIG WELDING Step outline:

1) INSTALL Wire spool

2) SETUP Gas Regulator

3) SETUP MIG Gun

4) SET Welding Parameters

FABRICATOR 141i

Publication Date: October 31, 2013

Revision: D

Quick Start Guide Number: 0-5295

3-IN-1 Multi Process Welding Systems