Révision : AA Issue Date: September 17, 2015 Manual No.: 0-5448
esab.com
Page 2
WE APPRECIATE YOUR BUSINESS!
Congratulations on your new ESAB product. We are proud to have you as our customer and will strive to
provide you with the best service and reliability in the industry. This product is backed by our extensive
warranty and world-wide service network. To locate your nearest distributor or service agency, visit us on
the web at www.esab.com.
This Operating Manual has been designed to instruct you on the correct use and operation of your ESAB
product. Your satisfaction with this product and its safe operation is our ultimate concern. Therefore please
take the time to read the entire manual, especially the Safety Precautions. They will help you to avoid potential
hazards that may exist when working with this product.
YOU ARE IN GOOD COMPANY!
The Brand of Choice for Contractors and Fabricators Worldwide.
ESAB is a Global Brand of manual and automation Plasma Cutting Products.
We distinguish ourselves from our competition through market-leading, dependable products that have stood
the test of time. We pride ourselves on technical innovation, competitive prices, excellent delivery, superior
customer service and technical support, together with excellence in sales and marketing expertise.
Above all, we are committed to developing technologically advanced products to achieve a safer working
environment within the welding industry.
Page 3
WARNING
!
Plasma Cutting Power Supply
ESAB Fabricator® 141i 3-in-1 Multi Process Welding Systems™
Service Manual: 0-5448
Published by:
ESAB
2800 Airport Rd.
Denton, TX 76208
www.esab.com
Copyright 2015 by ESAB
Read and understand this entire Manual and your employer’s safety practices before installing, operating, or servicing the equipment.
While the information contained in this Manual represents the Manufacturer's best judgement,
the Manufacturer assumes no liability for its use.
All rights reserved.
Reproduction of this work, in whole or in part, without written permission of the
publisher is prohibited.
The publisher does not assume and hereby disclaims any liability to any party for
any loss or damage caused by any error or omission in this Manual, whether such
error results from negligence, accident, or any other cause.
Original Publication Date: September 17, 2015
Revision Date:
Record the following information for Warranty purposes:
Where Purchased:_______________________________ __________
Power Supply Serial #:___________________________ __________
Torch Serial #:___________________________________ __________
Page 4
Be sure this information reaches the operator.
You can get extra copies through your supplier.
CAUTION
These INSTRUCTIONS are for experienced operators. If you are not fully familiar
with the principles of operation and safe practices for arc welding and cutting equipment, we urge you to read our booklet, “Precautions and Safe Practices for Arc
Welding, Cutting, and Gouging,” Form 52-529. Do NOT permit untrained persons to
install, operate, or maintain this equipment. Do NOT attempt to install or operate this
equipment until you have read and fully understand these instructions. If you do not
fully understand these instructions, contact your supplier for further information. Be
sure to read the Safety Precautions before installing or operating this equipment.
USER RESPONSIBILITY
This equipment will perform in conformity with the description thereof contained in this manual and accompanying labels and/or inserts when installed, operated, maintained and repaired in accordance with the instructions
provided. This equipment must be checked periodically. Malfunctioning or poorly maintained equipment should not be
used. Parts that are broken, missing, worn, distorted or contaminated should be replaced immediately. Should such repair or replacement become necessary, the manufacturer recommends that a telephone or written request for service
advice be made to the Authorized Distributor from whom it was purchased.
This equipment or any of its parts should not be altered without the prior written approval of the manufacturer.
The user of this equipment shall have the sole responsibility for any malfunction which results from improper use,
faulty maintenance, damage, improper repair or alteration by anyone other than the manufacturer or a service facility
designated by the manufacturer.
READ AND UNDERSTAND THE INSTRUCTION MANUAL BEFORE INSTALLING OR
8.03 Installing Front Panel ................................................................................................... 8-3
8.04 Installing Control PCB2 and Clear Protective Sheet ..................................................... 8-4
8.05 Installing Case ............................................................................................................. 8-6
SECTION 9: KEY SPARE PARTS ...................................................................................... 9-1
9.01 Tweco Fusion 140A MIG Gun Parts ............................................................................. 9-1
9.02 Power Source .............................................................................................................. 9-2
9.03 Hardware List .............................................................................................................. 9-4
SECTION 10:
OPTIONS AND ACCESSORIES ................................................................................10-1
10.01 Options and Accessories ........................................................................................... 10-1
REVISION HISTORY ...................................................................................................10-2
INTERNATIONAL CONTACT INFORMATION ............................................................. REAR COVER
Page 7
ESAB FABRICATOR 141i
SECTION 1: SAFETY
1.0 Safety Precautions
Users of ESAB welding and plasma cutting equipment have the ultimate responsibility for ensuring that anyone who works
on or near the equipment observes all the relevant safety precautions. Safety precautions must meet the requirements
that apply to this type of welding or plasma cutting equipment. The following recommendations should be observed in
addition to the standard regulations that apply to the workplace.
All work must be carried out by trained personnel well acquainted with the operation of the welding or plasma cutting
equipment. Incorrect operation of the equipment may lead to hazardous situations which can result in injury to the
operator and damage to the equipment.
1. Anyone who uses welding or plasma cutting equipment must be familiar with:
- its operation
- location of emergency stops
- its function
- relevant safety precautions
- welding and / or plasma cutting
2. The operator must ensure that:
- no unauthorized person stationed within the working area of the equipment when it is started up.
- no one is unprotected when the arc is struck.
3. The workplace must:
- be suitable for the purpose
- be free from drafts
4. Personal safety equipment:
- Always wear recommended personal safety equipment, such as safety glasses, flame proof
clothing, safety gloves.
- Do not wear loose fitting items, such as scarves, bracelets, rings, etc., which could become
trapped or cause burns.
5. General precautions:
- Make sure the return cable is connected securely.
- Work on high voltage equipment may only be carried out by a qualified electrician.
- Appropriate fire extinguishing equipment must be clearly marked and close at hand.
- Lubrication and maintenance must not be carried out on the equipment during operation.
Dispose of electronic equipment at the recycling facility!
In observance of European Directive 2002/96/EC on Waste Electrical and Electronic Equipment and its
implementation in accordance with national law, electrical and/or electronic equipment that has reached
the end of its life must be disposed of at a recycling facility.
As the person responsible for the equipment, it is your responsibility to obtain information on approved
collection stations.
For further information contact the nearest ESAB dealer.
ESAB can provide you with all necessary cutting protection and accessories.
Manual 0-5448 1-1 SAFETY INSTRUCTIONS AND WARNINGS
Page 8
ESAB FABRICATOR 141i
WARNING
ELECTRIC SHOCK - Can kill.
- Install and earth (ground) the welding or plasma cutting unit in accordance with applicable standards.
- Do not touch live electrical parts or electrodes with bare skin, wet gloves or wet clothing.
- Insulate yourself from earth and the workpiece.
- Ensure your working stance is safe.
FUMES AND GASES - Can be dangerous to health.
- Keep your head out of the fumes.
- Use ventilation, extraction at the arc, or both, to take fumes and gases away from
your breathing zone and the general area.
ARC R AYS - Can injure eyes and burn skin.
- Protect your eyes and body. Use the correct welding / plasma cutting screen and
filter lens and wear protective clothing.
- Protect bystanders with suitable screens or curtains.
FIRE HAZARD
- Sparks (spatter) can cause fire. Make sure therefore that there are no inflammable
materials nearby.
Arc welding and cutting can be injurious to yourself and others.
Take precautions when welding and cutting. Ask for your employer's
safety practices which should be based on manufacturers' hazard
data.
NOISE - Excessive noise can damage hearing.
- Protect your ears. Use earmuffs or other hearing protection.
- Warn bystanders of the risk.
MALFUNCTION - Call for expert assistance in the event of malfunction.
READ AND UNDERSTAND THE INSTRUCTION MANUAL BEFORE INSTALLING OR OPERAT-
ING.
PROTECT YOURSELF AND OTHERS!
Do not use the power source for thawing frozen pipes.
WARNING
CAUTION
CAUTION
Class A equipment is not intended for use in residential locations
where the electrical power is provided by the public low-voltage
supply system. There may be potential difficulties in ensuring
electromagnetic compatibility of class A equipment in those locations, due to conducted as well as radiated disturbances.
This product is solely intended for metal removal. Any other use
may result in personal injury and / or equipment damage.
CAUTION
SAFETY INSTRUCTIONS AND WARNINGS 1-2 Manual 0-5448
Read and understand the instruction manual before
installing or operating.
!
Page 9
SECTION 2:
INTRODUCTION
ESAB FABRICATOR 141i
2.01 How To Use This Manual
This Owner’s Manual applies to just specification or part numbers listed on page i.
To ensure safe operation, read the entire manual, including the
chapter on safety instructions and warnings.
Throughout this manual, the words WARNING, CAUTION,
DANGER, and NOTE may appear. Pay particular attention to
the information provided under these headings. These special
annotations are easily recognized as follows:
NOTE!
An operation, procedure, or background
information which requires additional
emphasis or is helpful in efficient operation of the system.
CAUTION
!
!
!
A procedure which, if not properly followed, may cause damage to the equipment.
WARNING
A procedure which, if not properly followed, may cause injury to the operator or
others in the operating area.
WARNING
Gives information regarding possible
electrical shock injury. Warnings will be
enclosed in a box such as this.
DANGER
Means immediate hazards which, if not
avoided, will result in immediate, serious
personal injury or loss of life.
2.03 Receipt of Equipment
When you receive the equipment, check it against the invoice
to make sure it is complete and inspect the equipment for
possible damage due to shipping. If there is any damage,
notify the carrier immediately to file a claim. Furnish complete
information concerning damage claims or shipping errors to
the location in your area listed in the inside back cover of this
manual.
Include all equipment identification numbers as described
above along with a full description of the parts in error.
Move the equipment to the installation site before un-crating
the unit. Use care to avoid damaging the equipment when using bars, hammers, etc., to un-crate the unit.
2.04 Description
The ESAB Fabricator 141i is a self contained single phase multi
process welding system that is capable of performing MIG
(GMAW/FCAW), STICK (SMAW) and LIFT TIG (GTAW) welding
processes. The Power Source is equipped with an integrated
wire feed unit, digital voltage and amperage meters, and a
host of other features in order to fully satisfy the broad operating needs of the modern welding professional. The Power
Source is also fully compliant to Standard CSA E60974-1-00
and UL 60974.1.
The Fabricator 141i MIG provides excellent welding performance across a broad range of applications when used with
the correct welding consumables and procedures. The following instructions detail how to correctly and safely set up the
machine and give guidelines on gaining the best efficiency and
quality from the Power Source. Please read these instructions
thoroughly before using this equipment.
Additional copies of this manual may be purchased by contacting ESAB at the address and phone number in your area listed
on back cover of this manual. Include the Owner’s Manual
number and equipment identification numbers.
Electronic copies of this manual can also be downloaded at no
charge in Acrobat PDF format by going to the ESAB web site
listed below
http://www.esab.com
Manual 0-5448 2-1 INTRODUCTION
Page 10
ESAB FABRICATOR 141i
Comes Complete With:
• Fabricator 141i Power Source
• 140 Amp MIG Gun
• Regulator/Flowmeter & Hose
• ESAB Electrode Holder & Ground Clamp
• Drive Rolls & Contact Tips
• Sample Electrodes & Shoulder Strap
• 20A to 15A Power Cord Adapter
• Operator Manual & CD
A-12917
2.05 Transportation Methods
WARNING
!
2.06 User Responsibility
This equipment will perform as per the information contained herein when installed, operated, maintained and repaired in accordance with the instructions provided. This equipment must be checked periodically. Defective equipment (including welding
leads) should not be used. Parts that are broken, missing, plainly worn, distorted or contaminated, should be replaced immediately.
Should such repairs or replacements become necessary, it is recommended that such repairs be carried out by appropriately qualified persons approved by ESAB. Advice in this regard can be obtained by contacting an Accredited ESAB Distributor.
This equipment or any of its parts should not be altered from standard specification without prior written approval of ESAB. The
user of this equipment shall have the sole responsibility for any malfunction which results from improper use or unauthorized
modification from standard specification, faulty maintenance, damage or improper repair by anyone other than appropriately qualified persons approved by ESAB.
2.07 Fabricator 141i Portable System Package (Part No. W1003141)
Disconnect input power conductors from de-energized supply line before moving the welding Power
Source.
Lift Power Source with handle on top of case. Use handcart or similar device of adequate capacity. If
using a fork lift vehicle, secure the Power Source on a proper skid before transporting.
INTRODUCTION 2-2 Manual 0-5448
Page 11
ESAB FABRICATOR 141i
Fabricator 141i
SECTION 3:
SAFETY AND INSTALLATION
3.01 Duty Cycle
The rated duty cycle of a Welding Power Source, is a statement of the time it may be operated at its rated welding current output without exceeding the temperature limits of the insulation of the component parts. To explain the 10 minute duty cycle period the following
example is used. Suppose a Welding Power Source is designed to operate at a 20% duty cycle, 100 amperes at 19 volts. This means
that it has been designed and built to provide the rated amperage (100 A) for 2 minutes, i.e. arc welding time, out of every 10 minute
period (20% of 10 minutes is 2 minutes). During the other 8 minutes of the 10 minute period the Welding Power Source must idle and
be allowed to cool.
100
90
80
70
60
50
40
30
Duty Cycle (percentage)
20
10
0
0102030405060708090100110120130140150
Safe
Operating
Region
STICK (SMAW)/ MIG (GMAW/ FCAW)
TIG (GTAW)
Art # A-11276_AB
Welding Current (amps)
Figure 3-1: Fabricator 141i Duty Cycle
Manual 0-5448 3-1 SAFETY AND INSTALLATION
Page 12
ESAB FABRICATOR 141i
3.02 Specifications
DESCRIPTIONFABRICATOR 141i MULTI PROCESS 3 IN 1 WELDER
Power Source Part No.W1003140
Power Source DimensionsH16.14” x W8.27” x D17.72” (410mm x 210mm x 450mm)
Welding Current Range (MIG Mode)10- 90A
Welding Current Range (LIFT TIG Mode)10- 140A
Welding Current Range (STICK Mode)10- 90A
Wirefeed Speed Range95-390 IPM
MIG Welding Voltage Range10-19V DC
Nominal OCV53V DC
Breaker Size20A
Effective Input Current (I
MIG (GMAW/FCAW)
1eff
)
16.8A
(Requires updated Power Cord and Plug)
30A
16.1A*
STICK (SMAW)
TIG (GTAW)
Maximum Input Current (I
MIG (GMAW/FCAW)
STICK (SMAW)
TIG (GTAW)
1max
)
16.8A
11.0A
26.2A
28.4A
24.7A
11.8A*
14.3A*
41.5A*
30.5A*
37A*
Single Phase Generator Requirement5 KW6 KW*
MIG (GMAW/FCAW) Welding Output
STICK (SMAW) Welding Output
LIFT TIG (GTAW) Welding Output
90A@20%, 18.5V
60A@60%, 17.0V
45A@100%, 16.25V
80A@35%, 23.2V
60A@60%, 22.4V
45A@100%, 21.8V
100A@20%, 14.0V
60A@60%, 12.4V
45A@100%, 11.8V
140A@15%, 19V*
60A@60%, 17.6V*
45A@100%, 16.8V*
90A@15%, 23.0V*
60A@60%, 22.8V*
45A@100%, 22.2V*
140A@15%, 15.6V*
60A@60%, 12.8V*
45A@100%, 12.2V*
Protection ClassIP23S
Table 3-1: Fabricator 141i Specification
SAFETY AND INSTALLATION 3-2 Manual 0-5448
Page 13
ESAB FABRICATOR 141i
NOTE!
* indicates data tested by ESAB Group, Inc.
The recommended time delay fuse or circuit breaker size is 20 amp. An individual branch circuit capable of
carrying 20 amperes and protected by fuses or circuit breaker is recommended for this application. Fuse
size is based on not more than 200 percent of the rated input amperage of the welding Power Source (Based
on Article 630, National Electrical Code)
ESAB continuously strives to produce the best product possible and therefore reserves the right to change,
improve or revise the speci fications or design of this or any product without prior notice. Such updates or
changes do not entitle the buyer of equipment previously sold or shipped to the corresponding changes,
updates, improvements or replacement of such items.
The values specified in the table above are optimal values, your values may differ. Individual equipment may
differ from the above specifications due to in part, but not exclusively, to any one or more of the following;
variations or changes in manufactured components, installation location and conditions and local power grid
supply conditions.
The thermal protection switch is rated at 80°C.
3.03 Environment
These units are designed for use in environments with increased hazard of electric shock.
A. Examples of environments with increased hazard of electric shock are:
1. In locations in which freedom of movement is restricted, so that the operator is forced to perform the work in a cramped (kneeling, sitting or lying) position with physical contact with conductive parts.
2. In locations which are fully or partially limited by conductive elements, and in which there is a high risk of unavoidable or accidental contact by the operator.
3. In wet or damp hot locations where humidity or perspiration considerable reduces the skin resistance of the human body and
the insulation properties of accessories.
B. Environments with increased hazard of electric shock do not include places where electrically conductive parts in the near
vicinity of the operator, which can cause increased hazard, have been insulated.
3.04 Location
Be sure to locate the welder according to the following guidelines:
A. In areas, free from moisture and dust.
B. Ambient temperature between 32 to 104° F (0 to 40° C).
C. In areas, free from oil, steam and corrosive gases.
D. In areas, not subjected to abnormal vibration or shock.
E. In areas, not exposed to direct sunlight or rain.
F. Place at a distance of 12"(300mm) or more from walls or similar that could restrict natural air flow for cooling.
G. The enclosure design of this Power Source meets the requirements of IP23S as outlined in EN 60529. This provides adequate
protection against solid objects (greater than 1/2", 12mm), and direct protection from vertical drops. Under no circumstances
should the Power Source be operated or connected in a micro environment that will exceed the stated conditions. For further
information please refer to EN 60529.
H. Precautions must be taken against the power source toppling over. The power source must be located on a suitable horizontal
surface in the upright position when in use.
WARNING
This equipment should be electrically connected by a qualified electrician.
Manual 0-5448 3-3 SAFETY AND INSTALLATION
Page 14
ESAB FABRICATOR 141i
3.05 Ventilation
WARNING
!
3.06 Electricity Supply Voltage
!
WARNING
The Fabricator 141i must be electrically connected by a qualified electrical trades-person. Damage to the
PCA (Power Control Assembly) could occur if 140 VAC or higher is applied to the Primary Power Cable.
Since the inhalation of welding fumes can be harmful, ensure that the welding area is effectively
ventilated.
CAUTION
The Electricity Supply voltage should be within 95-140V AC. Too low a voltage may cause poor
welding performance in STICK mode. Too high a supply voltage will cause components to overheat
and possibly fail.
The Welding Power Source must be:
• Correctly installed, if necessary, by a qualied electrician.
• Correctly earthed (electrically) in accordance with local regulations.
• Connected to the correct size power point and fuse as per the Specications on page 3-2.
WARNING
ELECTRIC SHOCK can kill; SIGNIFICANT DC VOLTAGE is present after removal of input power. DO
NOT TOUCH live electrical parts.
SHUT DOWN welding Power Source, disconnect input power employing lockout/tagging procedures. Lock-out/tagging procedures con-
sist of padlocking line disconnect switch in open position, removing fuses from fuse box, or shutting off and red-tagging circuit breaker
or other disconnecting device.
Electrical Input Requirements
Operate the welding Power Source from a single-phase 50/60 Hz, AC power supply. The input voltage must match one of the electrical input voltages shown on the input data label on the unit nameplate. Contact the local electric utility for information about the type
of electrical service available, how proper connections should be made, and inspection required. The line disconnect switch provides a
safe and convenient means to completely remove all electrical power from the welding power source whenever necessary to inspect or
service the unit.
Do not connect an input (WHITE or BLACK) conductor to the ground terminal.
Do not connect the ground (GREEN) conductor to an input line terminal.
• Correctly installed, if necessary, by a qualied electrician.
• Correctly earthed (electrically) in accordance with local regulations.
• Connected to the correct size power point, fuse and primary supply lead based on Table 3-2. Refer to Table 3-2.
WARNING
An electric shock or fire hazard is probable if the following electrical service guide recommendations are
not followed. These recommendations are for a dedicated branch circuit sized for the rated output and duty
cycle of the welding Power Source.
SAFETY AND INSTALLATION 3-4 Manual 0-5448
Page 15
ESAB FABRICATOR 141i
50 / 60 Hz Single Phase Supply
Supply Voltage
Input Current at Maximum Output
Maximum Recommended Fuse* or Circuit Breaker Rating
*Time Delay Fuse, UL class RK5. Refer to UL248
Maximum Recommended Fuse^ or Circuit Breaker Rating
^Normal Operating , UL class K5. Refer to UL248
Single Phase Generator Requirement5 KW
Minimum Recommended Input Cable Size12AWG
Maximum Recommended Input Cable Length10ft (3m)
Minimum Recommended Grounding Cable Size12AWG
Table 3-2: Electrical Service Guide
NOTE!
Welding arc outs may be experienced if an extension cord is used when STICK welding when operating the
Power Source on 95 VAC due to the lack of DC voltage at the STICK electrode.
Input Power
Each unit incorporates an INRUSH circuit. When the MAIN CIRCUIT SWITCH is turned on, the inrush circuit provides pre-charging for the
input capacitors. A relay in the Main PCB1 will turn on after the input capacitors have charged to operating voltage (after approximately
5 seconds)
115V AC
28.4 Amps
30 Amps
30 Amps
NOTE!
Damage to the Main PCB1 could occur if 140V AC or higher is applied to the Primary Power Cord.
Model
Fabricator
Primary Supply
Cord Size
(Factory Fitted)
12AWG (3.3mm2)115V/20A90A@20%80A@35%100A@20%
Minimum Primary
Current Circuit Size
(Vin/Amps)
MIG (GMAW/
FCAW)
Current & Duty Cycle
STICK (SMAW)
LIFT TIG
(GTAW)
141i
10AWG (5mm2)115V/30A140A@15%90A@15%140A@15%
Table 3-3: Primary Circuit Sizes to Achieve Maximum Current
3.07 Electromagnetic Compatibility
WARNING
Extra precautions for Electromagnetic Compatibility may be required when this Welding Power Source is
used in a domestic situation.
A. Installation and Use - Users Responsibility
The user is responsible for installing and using the welding equipment according to the manufacturer’s instructions. If elec-
tromagnetic disturbances are detected then it shall be the responsibility of the user of the welding equipment to resolve the
situation with the technical assistance of the manufacturer. In some cases this remedial action may be as simple as earthing
the welding circuit, see NOTE below. In other cases it could involve constructing an electromagnetic screen enclosing the
Welding Power Source and the work, complete with associated input filters. In all cases, electromagnetic disturbances shall
be reduced to the point where they are no longer troublesome.
Manual 0-5448 3-5 SAFETY AND INSTALLATION
Page 16
ESAB FABRICATOR 141i
LOW PRESSUREGAUGE (DELIVERY)
HIGH PRESSUREGAUGE (SUPPLY)
INLET
CONNECTION
OUTLET
CONNECTION
PRESSURE
ADJUSTING
SCREW
A-09414_AC
NOTE!
The welding circuit may or may not be
earthed for safety reasons. Changing the
earthing arrangements should only be
authorized by a person who is competent to assess whether the changes will
increase the risk of injury, e.g. by allowing
parallel welding current return paths which
may damage the earth circuits of other
equipment. Further guidance is given in EN
60974-13 Arc Welding Equipment - Installation and use (under preparation).
B. Assessment of Area
Before installing welding equipment, the user shall make an
assessment of potential electromagnetic problems in the
surrounding area. The following shall be taken into account
1. Other supply cables, control cables, signaling and telephone cables; above, below and adjacent to the welding
equipment.
2. Radio and television transmitters and receivers.
3. Computer and other control equipment.
4. Safety critical equipment, e.g. guarding of industrial
equipment.
5. The health of people around, e.g. the use of pacemakers
and hearing aids.
6. Equipment used for calibration and measurement.
7. The time of day that welding or other activities are to be
carried out.
8. The compatibility of other equipment in the environment: the user shall ensure that other equipment being
used in the environment is compatible: this may require
additional protection measures.
The size of the surrounding area to be considered will
depend on the structure of the building and other activities
that are taking place. The surrounding area may extend
beyond the boundaries of the premises.
C. Methods of Reducing Electromagnetic Emissions
1. Electricity Supply
Welding equipment should be connected to the Electric-
ity Supply according to the manufacturer’s recommendations. If interference occurs, it may be necessary
to take additional precautions such as filtering of the
Electricity Supply. Consideration should be given to
shielding the supply cable of permanently installed
welding equipment in metallic conduit or equivalent.
Shielding should be electrically continuous throughout
it’s length. The shielding should be connected to the
SAFETY AND INSTALLATION 3-6 Manual 0-5448
Welding Power Source so that good electrical contact is
maintained between the conduit and the Welding Power
Source enclosure.
2. Maintenance of Welding Equipment
The welding equipment should be routinely maintained
according to the manufacturer’s recommendations. All
access and service doors and covers should be closed
and properly fastened when the welding equipment
is in operation. The welding equipment should not be
modified in any way except for those changes and adjustments covered in the manufacturer’s instructions. In
particular, the spark gaps of arc striking and stabilizing
devices should be adjusted and maintained according
to the manufacturer’s recommendations.
3. Welding Cables
The welding cables should be kept as short as possible
and should be positioned close together, running at or
close to the floor level.
4. Equipotential Bonding
Bonding of all metallic components in the welding
installation and adjacent to it should be considered.
However. Metallic components bonded to the work
piece will increase the risk that the operator could
receive a shock by touching the metallic components
and the electrode at the same time. The operator should
be insulated from all such bonded metallic components.
5. Earthing of the Workpiece
Where the workpiece is not bonded to earth for electri-
cal safety, nor connected to earth because of it’s size
and position, e.g. ship’s hull or building steelwork, a
connection bonding the workpiece to earth may reduce
emissions in some, but not all instances. Care should be
taken to prevent the earthing of the workpiece increasing the risk of injury to users, or damage to other
electrical equipment. Where necessary, the connection
of the workpiece to earth should be made by direct
connection to the workpiece, but in some countries
where direct connection is not permitted, the bonding
should be achieved by suitable capacitance, selected
according to national regulations.
6. Screening and Shielding
Selective screening and shielding of other cables
and equipment in the surrounding area may alleviate
problems of interference. Screening the entire welding
installation may be considered for special applications.
3.08 Victor Flowmeter/ Regulator
Flowmeter/ Regulator (Figure 3-1) attached to the cylinder valve
reduces high cylinder pressures to suitable low working pressures for welding, cutting, and other applications.
Figure 3-1: Victor CS Flowmeter/ Regulator
Page 17
ESAB FABRICATOR 141i
WARNING
!
1. Note the maximum inlet pressure stamped on the
2. The flowmeter/ regulator body will be stamped “IN” or
3. If gauges are to be attached to the flowmeter/ regulator
!
Use the flowmeter/ regulator for the gas
and pressure for which it is designed.
NEVER alter a flowmeter/ regulator for use
with any other gas.
NOTE!
Flowmeters/ Regulators supplied with
5/8" -18 standard inert gas connections.
Flowmeters/ Regulators purchased with
open 1/8”, 1/4”, 3/8”, or 1/2” NPT ports
must be assembled to their intended
system.
flowmeter/ regulator. DO NOT attach the flowmeter/
regulator to a system that has a higher pressure than
the maximum rated pressure stamped on the flowmeter/ regulator.
“HP” at the inlet port. Attach the inlet port to the system
supply pressure connection.
and the flowmeter/ regulator is stamped and listed by
a third party (i.e. “UL” or “ETL”). The following requirements must be met:
a) Inlet gauges over 1000 PSIG (6.87 mPa) shall con-
form with the requirements of UL 404, “Indicating
Pressure Gauges for Compressed Gas Service.”
b) Low pressure gauges must be UL recognized for
the class of flowmeter/ regulator they are being
used on according to UL252A.
WARNING
DO NOT use a flowmeter/ regulator that
delivers pressure exceeding the pressure rating of the downstream equipment
unless pro visions are made to prevent
over-pressurization (i.e. system relief
valve). Make sure the pressure rating of
the down stream equipment is compatible
with the maximum delivery pressure of the
flowmeter/ regulator.
WARNING
!
Figure 3-2: Flowmeter/ Regulator to Cylinder Valve
6. Before opening the cylinder valve, turn the flowmeter/
7. Relief Valve (where provided): The relief valve is de-
!
!
DO NOT attach or use the flowmeter/ regulator if oil, grease, flamma ble substances
or damage is present! Have a qualified
repair technician clean the flowmeter/
regulator or repair any damage.
A-09845_AB
regulator adjusting screw counterclockwise until there
is no pressure on the adjusting spring and the screw
turns freely.
signed to protect the low pressure side of the flowmeter/ regulator from high pres sures. Relief valves are not
intended to protect down stream equipment from high
pressures.
WARNING
DO NOT tamper with the relief valve or
remove it from the flowmeter/ regulator.
WARNING
Stand to the side of the cylinder opposite
the flowmeter/ regulator when opening the cylinder valve. Keep the cylinder
valve between you and the flowmeter/
regulator. For your safety, NEVER STAND
IN FRONT OF OR BEHIND A FLOWMETER/
REGULATOR WHEN OPENING THE CYLINDER VALVE!
4. Be sure that the flowmeter/ regulator has the correct
pressure rating and gas service for the cylinder used.
5. Carefully inspect the flowmeter/ regulator for damaged threads, dirt, dust, grease, oil, or other flammable
substances. Remove dust and dirt with a clean cloth. Be
sure the inlet swivel filter is clean and in place. Attach
the flowmeter/ regulator (Figure 3-2) to the cylinder
valve. Tighten securely with a wrench.
Manual 0-5448 3-7 SAFETY AND INSTALLATION
8. Slowly and carefully open the cylinder valve (Figure
3-3) until the maximum pressure shows on the high
pressure gauge.
Page 18
ESAB FABRICATOR 141i
Art # A-09828
Figure 3-3: Open Cylinder Valve
9. On all cylinders, open the valve completely to seal the valve packing. On gaugeless flowmeters/ regulators, the indicator will
register the cylinder contents open.
CAUTION
!
10. Attach the desired downstream equipment.
3.09 Volt-Ampere Curves
Keep the cylinder valve wrench, if one is required, on the cylinder valve to turn off the cylinder quickly, if
necessary.
Voltage-Amperage Curves shows maximum voltage and amperage output capabilities of welding power source. Curves of other settings
fall between curves shown.
60
50
40
30
20
Output Voltage (Volts)
10
0
0102030405060708090 100 110 120 130 140 150
MIG (GMAW/ FCAW)
Fabricator 141i
STICK (SMAW)
Welding Current (Amps)
TIG (GTAW)
Art # A-11807
Figure 3-2: Fabricator 141i Volt-Ampere Curves
SAFETY AND INSTALLATION 3-8 Manual 0-5448
Page 19
Notes
ESAB FABRICATOR 141i
Manual 0-5448 3-9 SAFETY AND INSTALLATION
Page 20
ESAB FABRICATOR 141i
This Page Intentionallly Blank
SAFETY AND INSTALLATION 3-10 Manual 0-5448
Page 21
SECTION 4:
3
4
5
8
7
10
11
12
13
14
2
1
16
15
A-13037
6
9
18
OPERATION
4.01 Power Source Controls, Indicators and Features
ESAB FABRICATOR 141i
Figure 4-1: Front Panel Figure 4-2: Rear Panel
19
Art #
20
21
A-10355
Figure 4-3: Wire Feed Compartment Control
Manual 0-5448 4-1 OPERATION
Page 22
ESAB FABRICATOR 141i
1. Power Indicator
The power indicator is illuminated when the Electricity Supply is applied to the Power Source and when the ON/OFF switch
located on the rear panel is in the ON position.
2. Digital Wirespeed/Amperage Meter (Left Digital Display)
This digital meter displays preview Wirespeed in MIG mode only then actual amperage (weld current) once an arc has been
established. It also displays preview amperage in both the STICK and LIFT TIG modes only then actual amperage (weld current)
once an arc has been established.
At times of non-welding, the amperage meter will display a preview value in both STICK and LIFT TIG modes. This value can
be adjusted by varying the Wire speed / Amperage potentiometer (Control No. 3). At times of non-welding, the amperage meter
will preview a wirefeed speed value (Inches Per Minute) in MIG mode only. This can be identified as preview wirefeed speed by
a decimal point at the lower right hand side of the display.
When welding, the amperage meter will display actual amperage (weld current) in all modes.
At the completion of welding, the amperage meter will hold the last recorded amperage value for a period of approximately 10
seconds in all modes. The amperage meter will hold the value until; (1) any of the front panel controls are adjusted in which
case the Power Source will revert to preview mode, (2) welding is recommenced, in which case actual welding amperage will
be displayed, or (3) a period of 10 seconds elapses following the completion of welding in which case the Power Source will
return to preview mode.
NOTE!
The preview functionality provided on this power source is intended to act as a guide only. Some differences may be observed between preview values and actual welding values due to factors including
the mode of welding, differences in consumables/gas mixtures, individual welding techniques and the
transfer mode of the welding arc (ie dip versus spray transfer). Where exact settings are required (in the
case of procedural work), it is recommended that alternate measurement methods be utilized to ensure
output values are accurate.
3. Wirespeed/Amperage Control
In MIG mode, the Wirespeed/Amperage control knob adjusts the speed of the wire feed motor (which in turn adjusts the output
current by varying the amount of MIG wire delivered to the welding arc). The optimum wire speed depends upon the material
type and the welding application. The setup chart on the inside of the wire feed compartment door provides a brief summary of
the required settings for a basic range of MIG (GMAW/FCAW) welding applications.
In STICK and LIFT TIG modes, the Wirespeed/Amperage control knob adjusts the amount of amperage (weld current) delivered
to the welding arc by the Power Source. It directly adjusts the Power Source to deliver the desired level of weld current.
4. MIG Gun Adapter (ESAB Style)
The MIG Gun adapter is standard ESAB connection with an 8 pin gun trigger for the Fusion MIG Gun. Connect the MIG Gun by
pushing the MIG Gun connector into the brass MIG Gun Adapter firmly and screw the locking screw in the MIG Gun Adapter within
the Wire Feed Compartment to secure the Fusion MIG Gun in position. Failure to properly lock the Fusion MIG Gun into the MIG
Gun Feedplate will result in the MIG Gun being pushed out of the MIG Gun Feedplate by the MIG welding wire or lack of shielding
gas (porosity in the weld) at the weld zone.
5. Positive Welding Output Terminal
The positive welding terminal is used to connect the welding output of the Power Source to the appropriate welding accessory
such as the MIG Gun (via the MIG Gun polarity lead), electrode holder lead or work lead. Positive welding current flows from the
Power Source via 25mm Dinse style connector. It is essential, however, that the Dinse adapter and male plug are inserted and
turned securely to achieve a sound electrical connection.
CAUTION
!
Loose welding terminal connections can cause overheating and result in the male plug being fused in the Dinse connector.
OPERATION 4-2 Manual 0-5448
Page 23
ESAB FABRICATOR 141i
6. MIG Gun Polarity Lead
The polarity lead is used to connect the MIG Gun to the appropriate positive or negative output terminal (allowing polarity reversal
for different welding applications). In general, the polarity lead should be connected in to the positive welding terminal (+) when
using steel, stainless steel or aluminum electrode wire. When using flux cored (gasless) wire, the polarity lead is generally connected to the negative welding terminal (-). If in doubt, consult the manufacturer of the electrode wire for the correct polarity. It is
essential, however, that the Dinse adapter and male plug are inserted and turned securely to achieve a sound electrical connection.
CAUTION
!
7. Negative Welding Output Terminal
The negative welding terminal is used to connect the welding output of the Power Source to the appropriate welding accessory
such as the MIG Gun (via the MIG Gun polarity lead), TIG Torch or work lead. Negative welding current flows to the Power Source
via 25mm Dinse style connector. It is essential, however, that the Dinse adapter and male plug are inserted and turned securely
to achieve a sound electrical connection.
!
Loose welding terminal connections can cause overheating and result in the male plug being fused in the Dinse connector.
CAUTION
Loose welding terminal connections can cause overheating and result in the male plug being fused in the Dinse connector.
8. Remote Control and Spool Gun Socket
The 8 pin socket is used to connect the Fusion MIG Gun, remote control device or spool gun plug to the welding Power Source.
To make connections, align keyway, insert plug, and rotate threaded collar fully clockwise.
Socket Pin
2
1
5
4
8
7
Art # A-10421_AC
1
2
3
4
3
6
Figure 4-4: Remote Control Socket
5
6
7
8
Remote Wirespeed in MIG (GMAW/FCAW) mode
Remote Amps in LIFT TIG (GTAW) mode
Trigger Switch
WV
Function
Remote Volts in
MIG (GMAW/FCAW)
Negative
Spool Gun Motor
Positive
1Spool gun motor (0V)
2
3
4
Trigger Switch Input
Trigger Switch Input
Spool gun motor (+24V DC)
5
6
5k ohm (maximum) connection to 5k ohm remote control potentiometer.
Zero ohm (minimum) connection to 5k ohm remote control potentiometer.
Wiper arm connection to 5k ohm potentiometer for the remote control of the Wirespeed in MIG mode.
7
Wiper arm connection to 5k ohm potentiometer for the remote control of the Amperage (Weld Current)
in LIFT TIG mode.
8
Manual 0-5448 4-3 OPERATION
Wiper arm connection to 5k ohm remote control Volts MIG mode potentiometer.
Table 4-1
Page 24
ESAB FABRICATOR 141i
Note that the Local/ Remote Switch (Control No. 18) located in the wirefeed compartment should be set to Remote for remote
amperage/voltage controls to operate.
9. Multifunction Control - Voltage, Down Slope & Arc Force
The multifunction control knob is used to adjust Voltage (MIG Mode), Down slope (LIFT TIG Mode) and Arc Force (STICK Mode)
depending on the welding mode selected.
NOTE!
The preview functionality provided on this power source is intended to act as a guide only. Some differences may be observed between preview values and actual welding values due to factors including
the mode of welding, differences in consumables/gas mixtures, individual welding techniques and the
transfer mode of the welding arc (ie dip versus spray transfer). Where exact settings are required (in the
case of procedural work), it is recommended that alternate measurement methods be utilized to ensure
output values are accurate.
When MIG Mode is Selected
In this mode the control knob is used to adjust the MIG welding voltage of the Power Source. The welding voltage is increased by
turning the knob clockwise or decreased by turning the knob counterclockwise. The optimum voltage level required will depend
on the type of welding application. The setup chart on the inside of the wire feed compartment door provides a brief summary
of the required output settings for a basic range of MIG welding applications.
When STICK Mode is Selected
In this mode the multifunction control knob is used to adjust arc force. Arc force control provides an adjustable amount of welding
force (or “dig”) control. This feature can be particularly beneficial in providing the operator the ability to compensate for variability
in joint fit-up in certain situations with particular electrodes. In general increasing the arc force control toward ‘10’ (maximum
arc force) allows greater penetration control to be achieved. Arc force is increased by turning the control knob clockwise or
decreased by turning the knob counterclockwise.
When LIFT TIG Mode is Selected
In this mode the multifunction control knob is used to adjust down slope. Down slope allows the user to select the ramp down
time of the amperage at the completion of the weld. The main function of down slope is to allow the welding current to be gradually reduced over a pre-set time frame such that the welding pool is given time to cool sufficiently.
Note that when in 2T normal mode (Control No. 11), the Power Source will enter down slope mode as soon as the trigger switch
is released (ie if the multifunction control knob is set to 5, the Power Source will ramp down from the present welding current to
zero over 5 seconds). If no down slope time is set then the welding output will cease immediately. If the Power Source is set to
4T latch mode, to enter down slope mode the trigger must be held in for the selected time period (ie press and release trigger
to commence welding, then press and hold trigger again to enter down slope mode). Should the trigger be released during the
down slope phase (4T only), the output will cease immediately.
10. Arc Control (Inductance)
The arc control operates in MIG mode only and is used to adjust the intensity of the welding arc. Lower arc control settings make
the arc softer with less weld spatter. Higher arc control settings give a stronger driving arc which can increase weld penetration.
Soft means maximum inductance while Hard means minimum inductance.
11. Trigger Mode Control (MIG and LIFT TIG Mode only)
The trigger mode control is used to switch the functionality of the of the MIG or TIG Trigger Switch between 2T (normal) and 4T
(latch mode)
2T (Normal Mode)
In this mode, the MIG or TIG Trigger Switch must remain depressed for the welding output to be active. Press and hold the MIG
or TIG Trigger Switch to activate the Power Source (weld). Release the MIG or TIG Trigger Switch to cease welding.
OPERATION 4-4 Manual 0-5448
Page 25
ESAB FABRICATOR 141i
4T (Latch Mode)
This mode of welding is mainly used for long welding runs to reduce operator fatigue. In this mode the operator can press and
release the MIG or TIG Trigger Switch and the output will remain active. To deactivate the Power Source, the trigger switch must
again be depressed and released, thus eliminating the need for the operator to hold the MIG or TIG Trigger Switch
Note that when operating in LIFT TIG mode, the Power Source will remain activated until the selected Downslope time has
elapsed (refer Control No. 9).
12. Process Selection Control
The process selection control is used to select the desired welding mode. Three modes are available, MIG, LIFT TIG and STICK
modes. Refer to section4.10 through 4.12 for MIG (GMAW/FCAW) set up details, section 4.13 for LIFT TIG (GTAW) set-up details
or section 4.14 for STICK (SMAW) set-up details.
Note that when the Power Source is powered off the mode selection control will automatically default to MIG mode. This is
necessary so as to prevent inadvertent arcing should an electrode holder be connected to the Power Source and mistakenly be
in contact with the work piece during power up.
13. Digital Voltage Meter (Right Digital Display)
The digital voltage meter is used to display the both the preview voltage (MIG mode only) and actual output voltage (all modes)
of the Power Source.
At times of non-welding, the voltage meter will display a preview value in MIG mode. This value can be adjusted by varying the
multifunction control knob (Control No. 9). Note that in STICK and LIFT TIG modes, the voltage meter will not preview welding
voltage but will display Open Circuit Voltage in STICK mode and 0V in LIFT TIG mode.
When welding, the voltage meter will display actual welding voltage in all modes.
At the completion of welding, the digital voltage meter will hold the last recorded voltage value for a period of approximately 10
seconds in all modes. The voltage meter will hold the value until; (1) any of the front panel controls are adjusted in which case
the Power Source will revert to preview mode, (2) welding is recommenced, in which case actual welding amperage will be
displayed, or (3) a period of 10 seconds elapses following the completion of welding in which case the Power Source will return
to preview mode.
NOTE!
The preview functionality provided on this power source is intended to act as a guide only. Some differences may be observed between preview values and actual welding values due to factors including
the mode of welding, differences in consumables/gas mixtures, individual welding techniques and the
transfer mode of the welding arc (ie dip versus spray transfer). Where exact settings are required (in the
case of procedural work), it is recommended that alternate measurement methods be utilized to ensure
output values are accurate.
14. Fault Indicator
This welding Power Source is protected by a self resetting thermostat. The indicator will illuminate if the duty cycle of the Power
Source has been exceeded or if a fault is detected in the Inverter. Should the Fault Indicator illuminate the output of the Power
Source will be disabled. Once the Power Source cools down this light will go OFF and the over temperature condition will automatically reset. Note that the power switch should remain in the on position such that the fan continues to operate thus allowing
the Power Source to cool sufficiently. Do not switch the Power Source off should a thermal overload condition be present. If
the fault condition does not extinguish, then the Power Supply will need to be taken to an authorized repair center for analysis.
15. Gas Inlet (MIG mode only for MIG Gun or Spool Gun operation)
The Gas Inlet connection is used to supply the appropriate MIG welding gas to the Power Source. Refer to section 4.10 to 4.11
for MIG (FCAW/GMAW) set up details.
WARNING
!
Manual 0-5448 4-5 OPERATION
Only Welding Shielding Gases specifically designed for arc welding applications should be used.
Page 26
ESAB FABRICATOR 141i
16. On / Off Switch
This switch is used to turn the Power Source on/off.
WARNING
When the front digital displays are lit, the machine is connected to the Mains supply voltage
17. Intelligent Fan Control
The Fabricator 141i is designed with an intelligent fan control. It automatically switches the cooling fan off when it is not required.
This has two main advantages; (1) to minimize power consumption, and (2) to minimize the amount of contaminants such as
dust that are drawn into the Power Source.
Note that the fan will only operate when required for cooling purposes and will automatically switch off when not required.
Note in STICK mode the fan operates continuously.
18. Local / Remote Switch (located in wirefeed compartment)
The local/ remote switch is used only when a remote control device (such as a TIG Torch with remote current control) is fitted to
the Power Source via the remote control socket (8 Pin Remote Socket). When the local/remote switch is in the remote position,
the Power Source will detect a remote device and work accordingly. When in the local mode, the Power Source will not detect
the remote device and will operate from the Power Source controls only. Note that the trigger will operate at all times on the
remote control socket irrespective of the position of the local remote switch (ie in both local and remote modes).
and the internal electrical components are at Mains voltage potential.
Should a remote device be connected and the local/ remote switch set to remote, the maximum setting of the Power Source will
be determined by the respective front panel control, irrespective of the remote control device setting. As an example, if the output
current on the Power Source front panel is set to 50% and the remote control device is set to 100%, the maximum achievable
output from the Power Source will be 50%. Should 100% output be required, the respective front panel control must be set to
100%, in which case the remote device will then be able to control between 0-100% output.
19. Burnback Control (located in wirefeed compartment)
The Burnback control is used to adjust the amount of MIG wire that protrudes from the MIG Gun after the completion of MIG
welding (commonly referred to as stick-out). To decrease the Burnback time (or lengthen the amount of wire protruding from
the MIG Gun at the completing of welding), turn the Burnback control knob counterclockwise. To increase the Burnback time (or
shorten the amount of wire protruding from the MIG Gun at the completing of welding), turn the Burnback Control knob clockwise.
20. MIG Gun & Spool Gun Switch
The MIG Gun / Spool Gun switch is used to switch welding mode between MIG Gun function and Spool Gun function.
21. 10A Fuse
The 10A fuse is used to protect both spool gun motor and internal motor.
OPERATION 4-6 Manual 0-5448
Page 27
ESAB FABRICATOR 141i
Art #
A-10356_AB
MIG Gun Adaptor
MIG Gun Connector
MIG Gun Connector
Thumb Screw
8 pin socket
8 pin plug
4.02 Attaching the Fusion 140A MIG Gun
Fit the MIG Gun to the Power Source by pushing the MIG Gun connector into the MIG Gun Adapter and tightening the Locking
Screw to secure the MIG Gun in the MIG Gun Adapter.
Connect the 8 pin plug by aligning the keyway then inserting the 8 pin plug into the 8 pin socket and rotate threaded collar fully
clockwise to lock the plug into position.
Figure 4-5: Attaching MIG Gun
Manual 0-5448 4-7 OPERATION
Page 28
ESAB FABRICATOR 141i
4.03 Inserting Wire into the Wire Feed Mechanism
Release the tension from the Pressure Roller Arm by turning the adjustable Wire Drive Tension Screw in a counterclockwise. Then
to release the pressure roller arm push the tension screw toward the front of the machine which releases the pressure roller
arm. With the MIG welding wire feeding from the bottom of the spool (Figure 4-7) pass the electrode wire through the inlet guide,
between the rollers, through the outlet guide and into the MIG Gun. Re-secure the pressure roller arm and wire drive tension screw
and adjust the pressure accordingly (Figure 4-6). Remove the nozzle and contact tip from the MIG Gun. With the MIG Gun lead
reasonably straight, feed the wire through the MIG Gun by depressing the trigger switch. Fit the appropriate contact tip.
WARNING
Before connecting the work clamp to the work piece, make sure you have ceased feeding wire so
premature arcing will not occur.
The electrode wire will be at welding voltage potential while it is being fed through the system.
Keep MIG Gun away from eyes and face.
Wire Drive Tension Screw
Art #
A-10359_AB
Pressure Roller Arm
Outlet Guide
Inlet Guide
Figure 4-6: Wire Drive Assembly Components
Figure 4-7: MIG Welding Wire - Installation
OPERATION 4-8 Manual 0-5448
MIG Welding Wire
Art #
A-10360
Page 29
ESAB FABRICATOR 141i
Art #
A-10357
Friction Washer
4”(100mm)
Diameter spool
Nut with
Nylon Insert
Spring
Plastic Spacer
Brass Flat
Washer
Flat Washer
4.04 Installing 4" (100mm) Diameter Spool
As delivered from the factory, the Power Source is fitted with a Wire Spool Hub which accepts a 8" (200mm) diameter spools. In
order to fit a 4" (100mm) diameter spool assemble parts in the sequence shown below in Figure 4-8.
Adjustment of the nut with nylon insert will control the MIG Wire Spool Brake. Clockwise rotation of this nut with nylon insert
tightens the brake. The brake is correctly adjusted when the spool stops within 4" (100mm) to 8" (200mm) (measured at the outer
edge of the spool) after MIG Gun trigger is released. Wire should be slack without becoming dislodged from the spool.
CAUTION
!
Overtension of brake will cause rapid wear of mechanical WIREFEED parts, overheating of
electrical components and possibly an increased incidence of electrode wire Burnback into
contact tip.
Figure 4-8: 4" (100mm)Diameter Spool Installation
4.05 Installing 8" (200mm) Diameter Spool
As delivered from the factory, the Power Source is set for a 8" (200mm) diameter spool.
In order to re-fit a 8" (200mm) spool assemble parts in the sequence shown below in Figure 4-9.
Adjustment of the nut with nylon insert will control the MIG Wire Spool Brake. Clockwise rotation of this nut with nylon insert tightens the brake. The Brake is correctly adjusted when the spool stops within 3/8" (10mm) to 3/4" (20mm) (measured at the outer
edge of the spool) after MIG Gun trigger is released. Wire should be slack without becoming dislodged from the spool.
CAUTION
Overtension of brake will cause rapid wear of mechanical WIREFEED parts, overheating of
electrical components and possibly an increased incidence of electrode wire Burnback into
contact tip.
Ensure that the alignment pin on the wire spool hub aligns with the hole allocated in 8"
(200mm) diameter spool.
!
NOTE!
This alignment pin can be removed by unscrewing in an counterclockwise direction and locating in the
appropriate position.
The pressure (top) roller applies pressure to the grooved feed roller via an adjustable pressure screw. These devices should be adjusted to a minimum pressure that will provide satisfactory wire feed without slippage. If slipping occurs, and inspection of the wire
contact tip reveals no wear, distortion or burn back jam, the conduit liner should be checked for kinks and clogging by metal flakes
and debris. If it is not the cause of slipping, the feed roll pressure can be increased by rotating the pressure screw clockwise.
WARNING
Before changing the feed roller ensure that the Electricity Supply to the Power Source is switched off.
CAUTION
!
The use of excessive pressure may cause rapid wear of the feed rollers, shafts and bearing.
OPERATION 4-10 Manual 0-5448
Page 31
ESAB FABRICATOR 141i
Art #
A-09584_AC
4.07 Changing the Feed Roll
To change feed roll remove the feed roll retaining screw by turning in an counterclockwise direction. Once the feed roll is removed
then to replace feed roll simply reverse these directions.
A dual groove feed roller is supplied as standard. It can accommodate 023"(0.6mm) -.030" (0.8mm) diameter hard wires. Select
the roller required with the chosen wire size marking facing outward.
GROOVE “B”GROOVE “A”
GROOVE “B” SIZE
Figure 4-10: Dual Groove Feed Roller
Feed Roll
Retaining Screw
Figure 4-11: Changing the Feed Roll
Feed Roll
GROOVE “A” SIZE
A-09583
4.08 Wire Reel Brake
The wire reel hub incorporates a friction brake which is adjusted during manufacture for optimum breaking. If it is considered
necessary, adjustment can be made by turning the large nut inside the open end of the hub clockwise to tighten the brake. Correct
adjustment will result in the wire reel circumference continuing no further than 3/8" (10mm) - 3/4" (20mm) after release of the
trigger. The electrode wire should be slack without becoming dislodged from wire spool.
!
Manual 0-5448 4-11 OPERATION
CAUTION
Overtension of brake will cause rapid wear of mechanical WIREFEED parts, overheating of
electrical components and possibly an increased incidence of electrode wire Burnback into
contact tip.
Page 32
ESAB FABRICATOR 141i
Wire Reel Brake Adjustment Nut
Art #
A-10361
Figure 4-12: Wire Reel Brake
4.09 Flowmeter/ Regulator Operation
With the flowmeter/ regulator connected to cylinder or pipeline, and the adjustment screw/knob fully disengaged, pressurize as
follows:
1. Stand to one side of flowmeter/ regulator and slowly open the cylinder valve. If opened quickly, a sudden pressure surge
may damage internal parts.
2. With valves on downstream equipment closed, adjust flowmeter/ regulator to approximate working pressure. It is recommended that testing for leaks at the flowmeter/ regulator connection points be carried out using a suitable leak detection
solution or soapy water.
3. Purge air or other unwanted welding grade shielding gas from equipment connected to the flowmeter/ regulator by
individually opening then closing the equipment control valves. Complete purging may take up to ten seconds or more,
depending upon the length and size of the hose being purged.
Adjusting Flow Rate
With the flowmeter/ regulator ready for operation, adjust working flow rate as follows:
1. Adjust the gas flow rate. The recommended rate for MIG welding is 15-25 CFH. The recommended rate for LIFT TIG welding is 10-25 CFH.
NOTE!
It may be necessary to re-check the shielding gas flowmeter/ regulator flow rate following the first
weld sequence due to back pressure present within shielding gas hose assembly.
Shutdown
Close cylinder valve whenever the flowmeter/ regulator is not in use. To shut down for extended periods (more than 30 minutes).
1. Close cylinder or upstream valve tightly.
2. Open downstream equipment valves to drain the lines. Bleed gas into a well ventilated area and away from any ignition
source.
3. After gas is drained completely, disengage adjusting screw and close downstream equipment valves.
4. Before transporting cylinders that are not secured on a cart designed for such purposes, remove flowmeters/ regulators.
Put caps on all cylinders that do not have flowmeters/ regulators on them.
OPERATION 4-12 Manual 0-5448
Page 33
ESAB FABRICATOR 141i
Art #
A-10362
Shielding Gas Hose Fitted
with 5/8"-18 UNF
connection
Primary Cord
Work Lead
Negative Welding
Terminal (-)
Positive Welding
Terminal (+)
MIG Gun
Polarity Lead
MIG Gun
8 pin Plug
Secure the gas cylinder
in an upright position
by chaining it to a
stationary support to
prevent falling or tipping.
4.10 Setup for MIG (GMAW) Welding with Gas Shielded MIG Wire
A. Select MIG mode with the process selection control. (Refer to Section 4.01 for further information)
B. Connect the MIG Gun Polarity Lead to the positive welding terminal (+). If in doubt, consult the electrode wire manufacturer.
Welding current flows from the Power Source via Dinse style connectors. It is essential, however, that the male plug is
inserted and turned securely to achieve a sound electrical connection.
C. Fit the MIG Gun to the Power Source. (Refer to Section 4.02 Attaching the Fusion 140A MIG Gun).
D. Connect the work lead to the negative welding terminal (-). If in doubt, consult the electrode wire manufacturer. Welding
current flows from the Power Source via Dinse style connectors. It is essential, however, that the male plug is inserted
and turned securely to achieve a sound electrical connection.
E. Fit the flowmeter/ regulator to the shielding gas cylinder then connect the shielding gas hose from the rear of the Power
Source to the flowmeter/ regulator outlet.
F. Refer to the Weld Guide located on the inside of the wirefeed compartment door for further information.
G. Switch the LOCAL/REMOTE switch inside the
wire feed compartment to LOCAL to use the
Power Sources Wirespeed and Voltage controls.
H. Switch the MIG GUN/SPOOL GUN switch inside
the wire feed compartment to MIG GUN.
WARNING
!
Before connecting the work clamp to the work piece, make sure you have ceased feeding
wire so premature arcing will not occur.
Secure the shielding gas cylinder in an upright position by chaining it to a suitable stationary
support to prevent falling or tipping.
!
CAUTION
Loose welding terminal connections can cause overheating and result in the male plug being fused in
the terminal.
Manual 0-5448 4-13 OPERATION
Figure 4-13: Setup for MIG Welding with Gas Shielded MIG Wire
Page 34
ESAB FABRICATOR 141i
(+)
4.11 Setup for MIG (FCAW) Welding with Flux Core (Gasless) Wire
A. Select MIG mode with the process selection control (refer to Section 4.01.12 for further information).
B. Connect the MIG Gun Polarity Lead to the negative welding terminal (-). If in doubt, consult the electrode wire manufacturer.
Welding current flows from the Power Source via Dinse style connectors. It is essential, however, that the male plug is
inserted and turned securely to achieve a sound electrical connection.
C. Connect the work lead to the positive welding terminal (+). If in doubt, consult the electrode wire manufacturer. Welding
current flows from the Power Source via Dinse style connectors. It is essential, however, that the male plug is inserted
and turned securely to achieve a sound electrical connection.
D. Refer to the Weld Guide located on the inside of the wirefeed compartment door for further information.
E. Switch the LOCAL/REMOTE switch inside the
wire feed compartment to LOCAL to use the
Power Sources Wirespeed and Voltage controls.
F. Switch the MIG GUN/SPOOL GUN switch inside
the wire feed compartment to MIG GUN.
WARNING
Before connecting the work clamp to the work piece, make sure you have ceased feeding wire
so premature arcing will not occur.
!
CAUTION
Loose welding terminal connections can cause overheating and result in the male plug being
fused in the terminal.
Remove any packaging material prior to use. Do not block the air vents at the front or rear of
the Welding Power Source.
Positive Welding
Terminal
MIG Gun
8 pin Plug
MIG Gun
Polarity Lead.
Negative Welding
Terminal (-)
Work Lead
Figure 4-14: Setup for MIG (FCAW) Welding with Flux Cored (Gasless) Wire
OPERATION 4-14 Manual 0-5448
A-09587_AD
Page 35
ESAB FABRICATOR 141i
Art #
A-10363
4.12 Setup for SPOOL GUN MIG (GMAW) Welding with Gas Shielded MIG Wire
Set the Process Selection Control to MIG for Spool Gun welding.
For setup and operation of the spool gun, please refer to the spool gun operations manual.
Switch the MIG GUN/SPOOL GUN switch inside the wire feed compartment to SPOOL GUN.
Connect the Argon shielding gas to the Shielding Gas Inlet on the rear panel of the Power Source.
1. Make sure the welding
power source is turned
OFF before connecting
the welding gun.
2. Open side panel and
loosen thumb screw.
3. Insert the back end of the
Spool gun into the gun
receiving bushing.
4. Tighten thumb screw and
replace side panel.
5. Connect gas supply fitting
and tighten with a wrench.
6. Connect the 8 pin plug by
aligning the keyway then
inserting the 8 pin plug into
the 8 pin socket and rotate
threaded collar fully clockwise
to lock the plug into position.
4.13 Setup for LIFT TIG (GTAW) Welding
A. Select LIFT TIG mode with the process selection control (refer to Section 4.01.12 for further information).
B. Using the supplied 50mm to 25mm DINSE adapter, connect the TIG torch to the negative welding terminal (-). Welding
current flows from the Power Source via Dinse style connectors. It is essential, however, that the male plug is inserted
and turned securely to achieve a sound electrical connection.
C. Connect the work lead to the positive welding terminal (+). Welding current flows from the Power Source via Dinse style
terminals. It is essential, however, that the male plug is inserted and turned securely to achieve a sound electrical connection.
D. Connect the TIG torch trigger switch via the 8 pin socket located on the front of the Power Source. The TIG torch will
require a trigger switch to weld in LIFT TIG Mode.
NOTE!
A ESAB 17V TIG torch with an 8 pin plug must be used to turn the weld current on/off via the TIG torch
trigger switch to TIG weld OR a ESAB Foot Control with an 8 pin plug must be used to turn the weld
current on/off as well as providing remote control of the weld current. Please refer to "2.10 Options and
Accessories".
E. Fit the flowmeter/ regulator to the shielding gas cylinder (refer to Section 3.08) then connect the shielding gas hose from
the TIG torch to the flowmeter/ regulator outlet. Note that the TIG torch shielding gas hose is connected directly to the
flowmeter/ regulator. The Power Source is not fitted with a shielding gas solenoid to control the gas flow in LIFT TIG mode
therefore the TIG torch will require a gas valve.
Manual 0-5448 4-15 OPERATION
Page 36
ESAB FABRICATOR 141i
Art # A-11576_AB
!
WARNING
Secure the shielding gas cylinder in an upright position by chaining it to a stationary support
to prevent falling or tipping.
CAUTION
!
Remove any packaging material prior to use. Do not block the air vents at the front or rear of
the Welding Power Source.
Loose welding terminal connections can cause overheating and result in the male plug being
fused in the terminal.
F. Switch the LOCAL/REMOTE switch inside the
wire feed compartment to LOCAL to use the
Power Sources Amperage control or REMOTE
for remote amperage using a Foot Control.
Positive Welding
Terminal (+)
MIG Torch
polarity lead
not connected
Work Lead
Connect to shielding gas
regulator/flow gauge.
Negative welding terminal (-)
50mm- 25mm Adaptor
Note: A Tweco 17V TIG torch with
an 8 pin plug must be used to turn the
weld current on/off via the TIG torch trigger
switch to TIG weld OR a Tweco Foot Control
with an 8 pin plug must be used to turn the
TIG Torch
weld current on/off as well as providing
remote control of the weld current.
Secure the gas cylinder
in an upright position by
chaining it to a stationary
support to prevent falling
or tipping.
Figure 4-15: Setup for TIG Welding
OPERATION 4-16 Manual 0-5448
Page 37
ESAB FABRICATOR 141i
!
Art #
A-10365
Negative Welding
Terminal (-)
Positive Welding
Terminal
(+)
Work Lead
Electrode
Holder
MIG Gun
polarity lead
not connected.
4.14 Setup for STICK (SMAW) Welding
A. Connect the Electrode Holder lead to the positive welding terminal (+). If in doubt, consult the electrode manufacturer.
Welding current flows from the Power Source via Dinse style connectors. It is essential, however, that the male plug is
inserted and turned securely to achieve a sound electrical connection.
B. Connect the work lead to the negative welding terminal (-). If in doubt, consult the electrode manufacturer. Welding cur-
rent flows from the Power Source via Dinse style connectors. It is essential, however, that the male plug is inserted and
turned securely to achieve a sound electrical connection.
WARNING
Before connecting the work clamp to the work and inserting the electrode in the electrode
C. Switch the LOCAL/REMOTE switch inside the wire
feed compartment to LOCAL to use the Power Sources
Amperage control or REMOTE for remote amperage
control using a Hand Pendant Control.
holder make sure the Electricity Supply is switched off.
CAUTION
Remove any packaging material prior to use. Do not block the air vents at the front or rear of
the Welding Power Source.
Manual 0-5448 4-17 OPERATION
Figure 4-16: Setup for Stick Welding(SMAW)
Page 38
ESAB FABRICATOR 141i
4.15 Torch Adapter Thumb Screw Replacement
WARNING
All power to unit should be removed.
1. Place unit on its back.
A-12958
2. Remove 2 screws in bottom of the front panel. A securing block will become detached and fall free from the front panel
as you turn each screw out. Set these aside for reassembly. Leave screws sitting in the pockets of the panel.
Screws
Art # A-11483
Securing Block
OPERATION 4-18 Manual 0-5448
Page 39
ESAB FABRICATOR 141i
3. Open the wire compartment door and release the tension knob so the pressure arm and tension knob hang downwardly.
Tension Knob
Pressure Arm
Art # A-11484
4. Gently push the bottom of the front panel upward until the thumb screw is fully exposed.
Thumb Screw
Fully Exposed
Art # A-11485_AB
5. Remove damaged thumb screw and replace with new one.
Art # A-11486
6. To reassemble, reverse steps 1 through 4.
Push Upward
Manual 0-5448 4-19 OPERATION
Page 40
ESAB FABRICATOR 141i
This Page Intentionally Blank
OPERATION 4-20 Manual 0-5448
Page 41
ESAB FABRICATOR 141i
SECTION 5:
THEORY OF OPERATION
5.01 Inverter Design
What does the word inverter mean?
The term inverter refers to the ability to change DC power into AC. Inverter power supplies immediately rectify the incoming AC to DC,
and then the transistors create a higher frequency AC. The higher frequency AC then goes on to a much smaller main transformer than
in a conventional power supply. The AC is then rectified to extremely smooth DC. The diagram to the below shows the basic electrical
wiring of a DC output inverter power supply.
AC -50/60Hz DC -Rippled DC -Smooth AC -23KHz AC -23K Hz DC - Rippled DC -Smooth
High Vo ltage High Vo ltage High voltage High Vo ltage Low Vo ltage Low Vo ltage Low Voltage
Low Amperage Low Amperage Low Amperage Low Amperage High Amperage High Amperage High Amperage
Art # A-09846
Manual 0-5448 5-1 THEORY OF OPERATION
Page 42
ESAB FABRICATOR 141i
Notes
THEORY OF OPERATION 5-2 Manual 0-5448
Page 43
ESAB FABRICATOR 141i
SECTION 6:
TROUBLESHOOTING
6.01 Pre-Power Up Checks
It is best to perform the following Pre-Power Up test procedures in order to prevent blowing Primary Line Fuses or causing further damage to the power supply.
Checking Unit Before Applying Power
CAUTION
!
With switch SW1 in OFF position, push and release the two push button switches. Each should have a recognizable tactile on/off
position. If either switch does not switch properly, check that the appropriate switch activators located behind the overlay are aligned
properly.
Turn the three potentiometer knobs. All of the three knobs should turn in both directions smoothly and have two stop positions.
The following safety information shall be read before starting troubleshooting and servicing:
1. Turn SW1 to OFF position, and disconnect unit from primary line voltage before
working on unit.
2. Significant DC voltage can remain on capacitors after unit is Off. Wait until all front
panel LED’s are off before removing case.
3. Before troubleshooting or applying power to unit, complete the following checks to
avoid causing further damage.
4. STATIC (ESD) can damage PC boards.
6.02 Tools Needed for Troubleshooting and Servicing
6.03 Troubleshooting
WARNING
There are extremely dangerous voltage and power levels present inside this unit. Do not attempt to diagnose or repair it unless you are an accredited service provider and you have had training in power electronics measurement and troubleshooting techniques.
Power Up Problems
NOTE!
In the event that either an individual indicator will not come on,or if a segment on the either Digital Display
will not light, yet the unit is otherwise fully functional, the Display PCB3 should be changed.
Before changing any PCB, check that the PCB in question has the appropriate input power supply voltage
as listed in PCB CONNECTORS section 6.11.
Art # A-09849
Manual 0-5448 6-1 TROUBLESHOOTING
Page 44
ESAB FABRICATOR 141i
A. Unit is completely inactive: No lights come on; Displays
do not come on, Fan does not operate.
1. Primary Voltage Supply problem
a) Measure for 115VAC (+/- 15%) at Primary Sup-
ply Voltage outlet/breaker.
2. Defective primary line cord/plug
a) Measure for 115VAC on the ON/OFF Switch
(SW1) between wires from the input power
cable. If voltage is low or not present repair or
replace cord/plug.
3. Defective ON/OFF Switch (SW1)
a) Measure for 115VAC at SW1 between two wires
from SW1 to Main PCB1. If voltage is low or not
present, Replace SW1
4. Defective rectifier bridge BR1 and BR2
a) Measure for 162VDC on PCB1 connector DCOUT
between Pin 3 to 1. If the voltage is less than
130V or missing, replace BR1 and BR2.
5. Defective Main PCB1
a) Replace Main PCB1
6. Defective ribbon cable / poor connection
a) Reseat or replace ribbon cable
STICK Process Problem
A. PROCESS switch will not change welding process.
1. Defective Display PCB3
a) Replace Display PCB3.
2. Defective Control PCB2
a) Replace Control PCB2.
3. Defective ribbon cable / poor connection
a) Reseat or replace ribbon cable.
B. Preset current can’t be adjusted.
1. Defective Display PCB3
a) Replace Display PCB3.
2. Defective Control PCB2
a) Replace Control PCB2.
3. Defective ribbon cable / poor connection
a) Reseat or replace ribbon cable.
C. Arc force can’t be adjusted.
1. Defective Display PCB3
a) Replace Display PCB3.
2. Defective Control PCB2
a) Replace Control PCB2.
3. Defective ribbon cable / poor connection
a) Reseat or replace ribbon cable.
D. Preset current can be adjusted, but when welding the
welding current is different from preset value.
1. Defective Control PCB2
a) Replace Control PCB2.
2. Defective Current sensor
a) Replace current sensor.
E. No open circuit voltage
1. Defective Main PCB1
a) Replace Main PCB1.
2. Broken wire in machine
a) Check and replace.
3. Defective Control PCB2
a) Replace Control PCB2.
F. Once the electrode touches the work piece, the fault
indicate illuminates and arc can’t be established.
1. Defective Current sensor
a) Replace current sensor.
2. Poor connection between current sensor and Control
PCB2
a) Check and replace.
3. Defective Control PCB2
a) Replace Control PCB2.
G. Fan doesn’t run
1. Defective fan
a) Measure the voltage between pin 1 and pin 2 of
Funs connectors. If voltage is 20-24V, replace
the fan.
2. Defective Control PCB2
a) Measure the voltage between pin 1 and pin 2
of Funs connectors. If voltage is not present,
replace Control PCB2.
H. The fault indicator illuminates and no output voltage.
The fault indicator can be indication of either over tem-
perature or over current.
1. Over temperature
a) Allow unit to remain ON with the fan running for
1 to minutes, until fault indicator turns off.
2. Defective thermal sensor
a) There is a negative temperature coefficient
(NTC) resistor sensor attached to the heat sink,
if the fault indicator is still ON after fan runs for
5-10 minutes, disconnect IGBT OT connector
from Control PCB2 and measure the resistance.
It should be about 47K at 25℃ ambient tempera-
ture, if it is less than 20K, replace it.
3. Over current
a) With SW1 OFF, disconnect the Driver connec-
tor from Control PCB2 and turn SW1 on. If fault
indicator turns off, replace Main PCB1.
b) With SW1 OFF, disconnect the Driver connec-
tor from Control PCB2 and turn SW1 on. If fault
indicator is still ON, replace Control PCB2.
MIG Process Problem
A. Trigger switch does not switch between 2T and 4T.
1. Defective Display PCB3
a) Replace Display PCB3.
2. Defective Control PCB2
a) Replace Control PCB2.
3. Defective ribbon cable / poor connection
a) Reseat or replace ribbon cable.
B. The power source does not feed wire when torch trigger
is depressed.
TROUBLESHOOTING 6-2 Manual 0-5448
Page 45
ESAB FABRICATOR 141i
1. Defective torch trigger
a) Check the torch trigger switch and replace it.
2. 8pin gun connector not connected
a) Connect 8 pin gun connector.
3. MIG GUN/SPOOL GUN switch is switched to SPOOL
GUN.
a) Turn the switch to MIG GUN.
4. When torch trigger is depressed, the output voltage
measured is about 14-24 VDC,but the motor doesn’t
run.
a) Measure the signal between pin 1 and pin 2
of PWM connector on Control PCB2, if it is not
present, replaces Control PCB2.
b) Measure the voltage between pin 1 and pin 2 of
MD connector on primary power PCB. It should
be 5-16VDC. If it is not present, replace Main
PCB1.
c) Measure the voltage between pin 3 and pin 4 of
M1/S in spool gun PCB6. It should be 5-16VDC.
If it is not present, replace spool gun PCB6.
d) Check and replace the wire if it is broken.
e) Replace the motor if it is faulty.
C. Welding wire continues to feed when torch trigger is
released.
1. Trigger mode selection switch is in 4T mode position
a) Turn the trigger mode to 2T mode.
2. Faulty Torch trigger switch
a) Replace torch trigger switch.
3. Torch trigger leads short circuit
a) Repair trigger leads.
D. Welding arc cannot be established.
1. MIG gun polarity lead is not connected to a welding
output terminal
a) Connect the MIG gun polarity lead to either posi-
tive welding output terminal or negative welding
output terminal as appropriate.
2. Poor or no work lead contact
a) Clean work clamp area and ensure good electri-
cal contact.
E. Inconsistent wire feed.
1. Fouled contact tip
a) Replace contact tip if necessary.
2. Drive roll tension not tight enough
a) Tighten drive roll tension.
3. Worn feed roll
a) Replace feed roll.
4. Excessive brake tension on wire reel hub
a) Reduce brake tension on spool hub.
5. Worn, kinked or dirty conduit liner
a) Clean or replace conduit liner.
F. No gas flow
1. Empty gas cylinder
a) Replace gas cylinder.
2. Flow meter/regulator turned off
a) Turn on flow meter/ regulator.
3. Gas passage contains debris
a) Disconnect gas hose from the rear of Power
Source and blow out debris.
4. Gas hose is damaged
a) Replace gas hose
5. Defective gas valve
a) Depress the trigger switch, measure the voltage
between pin 4 and pin 5 of DY1 connector on
Main PCB1. If it is 20-24VDC,but the gas valve
is not active, replace the gas valve.
6. If there is no voltage present between pin 4 and pin
5 of DY1 connector on Main PCB1, replace Control
PCB2.
F. Gas flow continues after the torch trigger switch has
been released.
1. Gas valve has jammed open due to debris in the gas
or gas line
a) Repair or replace the gas valve.
LIFT TIG Process Problem
A. TIG electrode melts when arc is struck.
1. TIG Torch is connected to the (+) polarity terminal
a) Connect the TIG Torch to the (-) polarity terminal.
2. No argon gas protects the electrode
a) Make sure the argon gas is applied.
NOTE!
For other problems, please refer to "STICK
Process Problem" Section.
Manual 0-5448 6-3 TROUBLESHOOTING
Page 46
ESAB FABRICATOR 141i
1
2
6.04 Case Removal
WARNING
!
1. Cover
Read and follow safety information in Section 6.02 before proceeding.
Lossen Screws
Front & Rear
Remove Screws
Art # A-10456
a) Remove the two top screws from the front & rear mouldings.
b) Remove the centre screws from the front & rear mouldings.
c) Loosen slightly the two bottom screws from the front & rear mouldings.
d) Remove the three bottom screws and the two top screws securing the cover panel.
e) Gently lever apart the front & rear mouldings & remove the cover panel.
2. Ground screw
- Carefully lift the case to access and remove the screw which connects the ground wire to the cover.
TROUBLESHOOTING 6-4 Manual 0-5448
Art # A-12169
Page 47
6.05 Clear protective Sheet Removal
WARNING
!
1. Clear protective sheet
Take out clear protective sheet.
Read and follow safety information in Section 6.02 before proceeding.
1
ESAB FABRICATOR 141i
Art # A-12170
6.06 Visually Inspect
Visually inspect the inside of the Power Source. The levels of current present in these units can cause burning or arcing of PCB, transformers, switches, or rectifier when a failure occurs. Carefully inspect all components within these units.
Look in particular for the following:
a) Loose or broken wires or connectors.
b) Burned or scorched parts or wires or evidence of arcing.
c) Any accumulation of metal dust or filings that may have caused shorting or arcing.
If any parts are damaged, they must be replaced. Refer to the Spare Parts section for a complete list of components used in the Power
Source.
Locate the faulty component(s) then replace where necessary.
Manual 0-5448 6-5 TROUBLESHOOTING
Page 48
ESAB FABRICATOR 141i
6.07 Preliminary DC Bus Measurement of the Main PCB1
WARNING
!
Read and follow safety information in Section 6.02 before proceeding.
18
2
22
21
68
5
17
1
11
12
10
9
7
16
20
15
13
19
14
Art # A-12171
DC Bus TestingMultimeter Lead PlacementVoltage with SW1 OFF
Buck CAPACITOR
Negative meter lead to testpoint1
Positive meter lead to testpoint2
0V
Table 6-1 DC BUS, Multimeter set to measure DC volts
Output Diode TestingMultimeter Lead PlacementDiode Voltage
Left Output Diodes
Right Output Diodes
Positive meter lead to testpoint 5
Negative meter lead to testpoint 6
Positive meter lead to testpoint 7
Negative meter lead to testpoint 8
0.2 – 0.8 VDC
0.2 – 0.8 VDC
Table 6-2 Output Diodes, digital meter set to measure Diode Voltage
IGBT TestingMultimeter Lead PlacementDiode Voltage
IGBT 1
IGBT 2
IGBT 4
IGBT 5
Positive meter lead to testpoint 9
Negative meter lead to testpoint 10
Positive meter lead to testpoint 11
Negative meter lead to testpoint 12
Positive meter lead to testpoint 13
Negative meter lead to testpoint 14
Positive meter lead to testpoint 15
Negative meter lead to testpoint 16
0.2 – 0.8 VDC
0.2 – 0.8 VDC
0.2 – 0.8 VDC
0.2 – 0.8 VDC
Table 6-3 IGBT’s, digital meter set to measure Diode Voltage
TROUBLESHOOTING 6-6 Manual 0-5448
Page 49
ESAB FABRICATOR 141i
IGBT TestingMultimeter Lead PlacementImpedance
IGBT 1
IGBT 2
IGBT 4
IGBT 5
Table 6-4 IGBT’s, Multimeter set to measure ohms (Ω)
Inrush PTCMultimeter Lead PlacementImpedance
Positive meter lead to testpoint 17
Negative meter lead to testpoint 9
Positive meter lead to testpoint 18
Negative meter lead to testpoint 11
Positive meter lead to testpoint 19
Negative meter lead to testpoint 13
Positive meter lead to testpoint 20
Negative meter lead to testpoint 15
150 to 350 Ω
150 to 350 Ω
150 to 350 Ω
150 to 350 Ω
PTC
Table 6-5 Inrush PTC, Multimeter set to measure ohms (Ω)
6.08 Check Main ON / OFF Switch
Positive meter lead to testpoint 21
Negative meter lead to testpoint 22
80 to 120 Ω
24
23
2526
Power Switch TestingMultimeter Lead PlacementImpedance
Switch ON
Switch ON
Switch OFF
Switch OFF
Manual 0-5448 6-7 TROUBLESHOOTING
Art # A-10459
Positive meter lead to testpoint 23
Negative meter lead to testpoint 24
Positive meter lead to testpoint 25
Negative meter lead to testpoint 26
Positive meter lead to testpoint 23
Negative meter lead to testpoint 24
Positive meter lead to testpoint 25
Negative meter lead to testpoint 26
Table 6-6 Power Switch, Multimeter set to measure ohms (Ω)
0 to 1 Ω
0 to 1 Ω
> 1k Ω
> 1k Ω
Page 50
ESAB FABRICATOR 141i
6.09 Check Main Input Rectifier
Input Rectifier TestingMultimeter Lead PlacementDiode Voltage
AC1 to DC+
AC2 to DC+
Positive meter lead to AC1
Negative meter lead to testpoint DC+
Positive meter lead to AC2
Negative meter lead to testpoint DC+
0.2 – 0.8 VDC
0.2 – 0.8 VDC
AC1 to DC-
AC2 to DC-
Positive meter lead to testpoint DC-
Negative meter lead to testpoint AC1
Positive meter lead to testpoint DC-
Negative meter lead to testpoint AC2
0.2 – 0.8 VDC
0.2 – 0.8 VDC
Table 6-7 IGBT’s, Multimeter set to measure Diode Voltage
Measurements may be made directly onto the main input rectifier. AC1 and AC2 may be measured from the pins on the mains supply
plug with the main power switch set to the ON position.
6.10 DC Bus Voltage Measurement
Apply voltage to the Power Source.
WARNING
There are extremely dangerous voltage and power levels present inside these Power Sources. Do
not attempt to diagnose or repair unless you have had training in power electronics measurement
and troubleshooting techniques.
Once power is applied to the Power Source, there are extremely hazardous voltage and power
levels present.
Do not touch any live parts.
18
2
22
21
68
5
17
1
11
12
10
9
7
16
20
15
13
19
14
Art # A-12171
TROUBLESHOOTING 6-8 Manual 0-5448
Page 51
ESAB FABRICATOR 141i
DY2
NTCS
DC Bus TestingMultimeter Lead Placement
Buck CAPACITOR
Negative meter lead to testpoint1
Positive meter lead to testpoint2
Table 6-8 DC BUS, Multimeter set to measure DC volts
Note: These DC voltages are at nominal mains supply voltage of 115VAC.
6Rectified Secondary of Current Transformer TR8-6VDC
7Common of +15V0VDC
Table 6-20 DRIVE Header Pin Function (Connects to IN header on Main PCB1)
WVIN Header PinPin FunctionSignal
1Negative welding terminalNegative welding voltage
2Not usedn/c
3Positive welding terminalPositive welding voltage
Table 6-21 WVIN Header Pin Function (Connects to welding terminals)
IFB Header PinPin FunctionSignal
1+15V power source+15VDC
2-15V power source-15VDC
3Current sensor signal4V/ 300A
40V0V
Table 6-22 IFB Header Pin Function (Connects to welding output current sensor)
SOURCE Header PinPin FunctionSignal
1+24V power source+21~25VDC
2Common of +24V and -24V0V
3-24V power source-21~25VDC
Table 6-23 SOURCE Header Pin Function (Connects to DY2 header on Main PCB1)
CR Header PinPin FunctionSignal
1Burn back potentiometer Min 0V
2Burn back potentiometer wiper0-5VDC
3Burn back potentiometer Max+5VDC
Table 6-24 CR Header Pin Function (Connects to CR header on Burnback PCB5)
IGBT OT Header PinPin Functionsignal
0V-5V
1NTC temperature sensor
2NTC temperature sensor0V
Overtemperature
when voltage less
than 0.9v.
Table 6-25 IGBT OT Header Pin Function (Connects to 47K NTC resistor)
NTCS Header PinPin FunctionSignal
1Power source for NCT circuitry
2Power source for NCT circuitry
12VDC between Pin 1 and pin 2
Table 6-26 NTCS Header Pin Function (Connects to NTCS header on Main PCB1)
TROUBLESHOOTING 6-12 Manual 0-5448
Page 55
ESAB FABRICATOR 141i
J1
MB Header PinPin FunctionSignal
1Serial display date& EPROM (D-IN)5VDC digital
2Serial display data(LOAD)5VDC digital
3Serial display data (CLK)5VDC digital
42T/4T push button0VDC
5Serial display EPROM (D-OUT)5VDC digital
6Not usedn/c
7Chip select5VDC digital
8MODEpush button0VDC
9+15VDC15VDC
10Not usedn/c
11Inductance pot terminal 2
12Volts set point0-5VDC
13Inductance pot terminal 1
14Amps set point0-5VDC
155VDC5VDC
16Common0VDC
Table 6-27 MB Header Pin Function (Connects to J12 header on Remote Interface PCB4)
0-10 kΩ between
pin 11 and 13
0-10 kΩ between
pin 11 and 13
3. Display PCB3
1
Inductance
Volts/Downslope /Arcforce
Amps
Art # A-12174
Manual 0-5448 6-13 TROUBLESHOOTING
Page 56
ESAB FABRICATOR 141i
GUN1
REMOTE
J1 Header PinPin FunctionSignal
1Serial display date& EPROM (D-IN)5VDC digital
2Serial display data(LOAD)5VDC digital
3Serial display data (CLK)5VDC digital
42T/4T push button0VDC
5Serial display EPROM (D-OUT)5VDC digital
6Not usedn/c
7Chip select5VDC digital
8MODEpush button0VDC
9+15VDC15VDC
10Not usedn/c
11Inductance pot terminal 2
12Volts set point0-5VDC
13Inductance pot terminal 1
14Amps set point0-5VDC
155VDC5VDC
16Common0VDC
Table 6-28 J1 Header Pin Function (Connects to J11 header on Remote Interface PCB4)
0-10 kΩ between
pin 11 and 13
0-10 kΩ between
pin 11 and 13
4. Remote Interface PCB4
1
J11
GUN1 Header PinPin FunctionSignal
1+24V trigger positive (/Torch Switch)
20VDC0V
Table 6-29 GUN1 Header Pin Function (Connects to GUN header on Control PCB2)
REMOTE Header PinPin FunctionSignal
1
2
Table 6-30 REMOTE Header Pin Function (Connects to SW2 Local/ Remote switch)
J12
1
15V
1
1
Local/ Remote switch
GUN
1
1
1
SGM
1
G
R-
Art # A-12175
+23~25VDC
0V@Trigger closed,
Closed when Remote
Mode selected
15V Header pinPin FunctionSignal
1+15V power source+15VDC
20V0V
Table 6-31 15V Header Pin Function (Connects to 15V header on Spool Gun PCB6)
TROUBLESHOOTING 6-14 Manual 0-5448
Page 57
ESAB FABRICATOR 141i
R-G Header PinPin FunctionSignal
1Spool Gun motor negative
2+24V trigger positive
3Trigger switch RTN0V
4Spool Gun motor positive
5-12VDC Pot Max-12VDC
6+12VDC Pot Min+12VDC
7Remote Amps Pot Wiper-12V~+12VDC
8Remote Vots Pot Wiper-12V~+12VDC
Table 6-32 R-G Header Pin Function (Connects to front panel 8 pin remote socket)
J12 Header PinPin FunctionSignal
1Serial display date& EPROM (D-IN)5VDC digital
2Serial display data(LOAD)5VDC digital
3Serial display data (CLK)5VDC digital
42T/4T push button0VDC
5Serial display EPROM (D-OUT)5VDC digital
6Not usedn/c
7Chip select5VDC digital
8MODEpush button0VDC
9+15VDC15VDC
10Not usedn/c
11Inductance pot terminal 2
12Volts set point0-5VDC
13Inductance pot terminal 1
14Amps set point0-5VDC
155VDC5VDC
16Common0VDC
Table 6-33 J12 Header Pin Function (Connects to MB header on Control PCB2)
0-24V between
pin 1 and 4
+23V-25VDC,
0V@ trigger
closed
0-24V between
pin 1 and 4
0-10 kΩ between
pin 11 and 13
0-10 kΩ between
pin 11 and 13
Manual 0-5448 6-15 TROUBLESHOOTING
Page 58
ESAB FABRICATOR 141i
J11 Header PinPin FunctionSignal
1Serial display date& EPROM (D-IN)5VDC digital
2Serial display data(LOAD)5VDC digital
3Serial display data (CLK)5VDC digital
42T/4T push button0VDC
5Serial display EPROM (D-OUT)5VDC digital
6MIG/ LIFT TIG/ STICK Selection Button0V when depressed
7Chip select5VDC digital
8MODEpush button0VDC
9+15VDC15VDC
10Not usedn/c
11Inductance pot terminal 2
12Volts set point0-5VDC
13Inductance pot terminal 1
14Amps set point0-5VDC
155VDC5VDC
16Common0VDC
Table 6-34 J11 Header Pin Function (Connects to J11 header on Display PCB3)
0-10 kΩ between pin
11 and 13
0-10 kΩ between pin
11 and 13
SGM Header PinPin FunctionSignal
5. Burnback PCB5
1
2
Spool Gun Motor connector0-24VDC
Table 6-35 SGM Header Pin Function (Connects to SGM header on Spool Gun PCB6)
Art # A-12176
CR Header PinPin FunctionSignal
1Burn back potentiometer max+5VDC
2Burn back potentiometer min0V
3Burn back potentiometer wiper0V~5VDC
Table 6-36 CR Header Pin Function (Connects to CR header on Control PCB2)
TROUBLESHOOTING 6-16 Manual 0-5448
Page 59
6. Spool Gun PCB6
ESAB FABRICATOR 141i
1
1
1
1
1
Art # A-12177
FUSE Header PinPin FunctionSignal
1
2
Table 6-37 FUSE Header Pin Function (Connects to 10A Motor Fuse)
PP Header PinPin FunctionSignal
1
2
Local/ Remote switch connector
Table 6-38 PP Header Pin Function (Connects to SW2 Local/ Remote switch)
15V Header PinPin FunctionSignal
1+15V power source+15VDC
20V0V
Table 6-39 15V Header Pin Function (Connects to 15V header on Remote Interface PCB4)
10A Fuse connectorClosed
Closed when Remote
Mode selected
SGM Header PinPin FunctionSignal
1
2
Spool Gun Motor connector0-24VDC
Table 6-40 SGM Header Pin Function (Connects to SGM header on Remote Interface PCB4)
MT Header PinPin FunctionSignal
1Motor positive input voltage
2Motor negative input voltage
3Motor negative output voltage
4Motor positive output voltage
0-24VDC between pin
1 and 2
0-24VDC between pin
1 and 2
Table 6-41 MT Header Pin Function (Connects to MD header on Main PCB1 and Motor)
Manual 0-5448 6-17 TROUBLESHOOTING
Page 60
ESAB FABRICATOR 141i
SW0
6.12 DIP Switch Settings, Control PCB2
1 DIP Switch SW0, Control PCB2
WVIN
QF/DY
GUN
IGBTOT
MB
WVF
PWM
Vmin
IFB
W2
A
NTCSFUNsCRSOURCEDRIVE
Imin
Imax
Art # A-12173
Art # A-12221
SW0 positionFunction
1Set to OFF for Fabricator 141i
2Set to OFF for Fabricator 141i
3Set to OFF for Fabricator 141i
4Set to OFF for Fabricator 141i
Table 6-41 SW0 Dip Switch functions
TROUBLESHOOTING 6-18 Manual 0-5448
Page 61
6.13 Calibration
Vmin
WVF
SW0
1 Calibration
ESAB FABRICATOR 141i
W2
A
Imax
Imin
Set SW0-1 to ON, SW0-2 to ON, SW0-3 to ON, SW0-4 to OFF to allow calibration of output volts & amps, and calibration of wire feed
speed.
2 Output Current Calibration
Select STICK mode on the front panel.
Measure open circuit voltage and adjust WVF potentiometer so Volts display reads within 0.2V of the measured value.
Connect a load to the output terminals. The load should be of a resistance to give 25V at 250A.
Set front panel AMPS potentiometer to minimum.
Adjust Imin trimpot until output amps is 10A +/- 0.2A
Set front panel AMPS potentiometer to maximum.
Adjust Imax trimpot until output amps is 90A +/- 1A
Recheck settings
Set front panel AMPS potentiometer to maximum.
Adjust A potentiometer so Amps display reads within 0.5A of the measured value.
3 Output Voltage Calibration
Select MIG mode on the front panel.
Remove the load from the output terminals.
Set front panel VOLTS potentiometer to minimum.
Adjust Vmin trimpot until output volts is 10.0V +/- 0.2V
Set front panel VOLTS potentiometer to maximum.
Adjust W2 trimpot until output volts is 19V +/- 0.2V
Recheck settings
4 Wire Speed Calibration
Art # A-12224
NOTE!
These adjustments are on the wiring side of the Main PCB1.
Manual 0-5448 6-19 TROUBLESHOOTING
Page 62
ESAB FABRICATOR 141i
A
W05 MAX SPEED
W0 2MIN SPEED
U0 2pin 6
B
E
U0 1pin 1
F
U0 1pin 2
G
U0 1pin 3
C
0V for wiredrive circuit (R017)
Art # A-12178
D
Select MIG mode on the front panel.
Remove the load from the output terminals.
Set front panel WIRESPEED (AMPS) potentiometer to minimum. AMPS display should read “30”
Adjust W02 trimpot until motor volts is 4.5V +/- 0.2V
Set front panel WIRESPEED (AMPS) potentiometer to maximum. AMPS display should read “100”
Adjust W05 trimpot until motor volts is 15V +/- 0.2V
Recheck settings
Set SW0-1 to OFF, SW0-2 to OFF, SW0-3 to OFF, SW0-4 to OFF to disable calibration of output volts & amps, and calibration of wire
feed speed and return to normal operation.
5 Wire Speed Testpoint Waveforms
Select MIG mode on the front panel and remove the load from output terminals.
Adjust the wirespeed control knob to the max and the digital amperage meter will display a preview value 390.
Now you can measure below waveforms according to different test points.
TROUBLESHOOTING 6-20 Manual 0-5448
Page 63
TEST POINT “A” 5V/div TEST POINT “B” 5V/div
ESAB FABRICATOR 141i
TEST POINT “C” 5V/div TEST POINT “D” 5V/div
TEST POINT “E” and “F” 5V/div TEST POINT “G” 5V/div
Art # A-11231
Manual 0-5448 6-21 TROUBLESHOOTING
Page 64
ESAB FABRICATOR 141i
DC+
6.14 Main Circuit Description
WARNING
!
Turn off power and disconnect mains supply plug from receptacle before working on the unit. Allow two
minutes for capacitors to discharge after disconnection from mains supply voltage.
DC-
C16C18C18-1
J1
BR2
3
1
2
BR1
3
PTC
R102
4
R100
C100
T13-1
OUT+
4
3
2
1
HallSensor
COUT1
T14-1
T15-1
TRANSFORMER
T16-1
NTC
C102
T17-1
EA RTH
T18-1
TR8
COUT2
C101
R101
OUT-
Art # A-12179
R103
1
2
CY1
CIN1
AC2
4
T1T2
CU4CU3
AC1
EA RTH
DC+
T5T4
DC-
TROUBLESHOOTING 6-22 Manual 0-5448
Page 65
ESAB FABRICATOR 141i
The mains supply voltage is connected via a double pole switch to the input rectifier BR1 &BR2. Overvoltage protection is provided by
varistor CY1.
The rectifier output charges the main capacitor bank (C16, C18, C18-1) to high voltage. Inrush current limiting is provided by a PTC
which is then bypassed by relay J1 after a few seconds.
The primary igbt transistors (T1, T2, T4, and T5) switch the transformer primary at high frequency and varying duty cycle.
Secondary output voltage from the transformer is rectified by the output diodes (T13-1, T14-1, T15-1, T16-1, T17-1, T18-1) to DC.
This DC is controlled by the PWM of the primary side igbt transistors, and is filtered by an inductor before connecting to the welding
output terminals.
A thermal overload device (thermistor) is fixed to the rectifier heatsink. When an over temperature occurs, the control circuit inhibits
the trigger, gas solenoid, wire drive system and the welding output. The thermal overload indicator LED on the front panel is illuminated.
The current transformer TR8 provides a signal to the control circuit to indicate both transformer primary current, and also detect
transformer saturation. The Hall effect current sensor is powered from regulated + & - 15VDC supplies and provides a voltage signal
proportional to the output DC welding current to allow the control circuit to regulate welding current.
Manual 0-5448 6-23 TROUBLESHOOTING
Page 66
ESAB FABRICATOR 141i
Art # A-11792 _AC
J24J10
J8
CONNECTOR
LAYOUT
DIAGRAM
J19
J1
J3
J7
J13
J16
J5
J15
J18
DRIV
E
PWM
WVIN
IFB
MB
SOURCE
GUN
QF
/DY
O
T
FUNSCRNTCS
ON
4
123
6.15 Circuit Diagram
TROUBLESHOOTING 6-24 Manual 0-5448
Page 67
!
SECTION 7:
DISASSEMBLY PROCEDURE
7.01 Safety Precautions for Disassembly
WARNING
!
!
Unplug unit before beginning Disassembly procedure.
7.02 Control PCB2 Removal
Read and follow safety information in Section 6.02 before proceeding.
WARNING
STATIC (ESD) can damage PC boards.
ESAB FABRICATOR 141i
WARNING
!
Remove case (refer to 6.04) before removing Control PCB2.
1. M4 Screw. Remove 4 screws from Control panel.
2 Disconnect DRIVE harness from DRIVE connector.
3. Disconnect SOURCE harness from SOURCE connector.
4. Disconnect CR harness from CR connector.
5. Disconnect FUNs harness from FUNs connector.
6. Disconnect NTCS harness from NTCS connector.
7. Disconnect IGBT OT harness from IGBT OT connector.
8. Disconnect GUN harness from GUN connector.
9. Disconnect QF/DY harness from QF/DY connector.
10. Disconnect WVIN harness from WVIN connector.
11 Disconnect MB harness from MB connector.
12. Disconnect PWM harness from PWM connector.
Read and follow safety information in Section 6.02 before proceeding with disassembly.
13. Disconnect IFB harness from IFB connector.
Ensure to unplug all harness from the Control PCB2.
Manual 0-5448 7-1 DISASSEMBLY PROCEDURE
Page 68
ESAB FABRICATOR 141i
12
2
13
1
Art # A-12180
11
10
9
8
7
6
5
4
3
WVIN
QF/DY
GUN
IGBT OT
NTCS
FUNs
CR
PWMMB
SOURCE
IFB
DRIVE
A-10018
DISASSEMBLY PROCEDURE 7-2 Manual 0-5448
Page 69
7.03 Display PCB3 Removal
1
WARNING
!
1. Remove Control Panel screws.
2. Disconnect the harness from the connectors.
3 Remove Display PCB3.
4. Remove Remote Interface PCB4.
Read and follow safety information in Section 6.02 before proceeding with disassembly.
ESAB FABRICATOR 141i
A-12929
Manual 0-5448 7-3 DISASSEMBLY PROCEDURE
Page 70
ESAB FABRICATOR 141i
2
Art # A-12181
4
3
DISASSEMBLY PROCEDURE 7-4 Manual 0-5448
Page 71
7.04 Front Panel Assembly Removal
CAUTION
!
1. Remove the five screws on front panel.
2 Unscrew Negative output terminal bolts.
3. Unscrew torch cable terminal bolts.
4. Unscrew output terminal bolts.
Read and follow safety information in Section 6.02 before proceeding with disassembly.
ESAB FABRICATOR 141i
1
3
4
2
A-12930
Manual 0-5448 7-5 DISASSEMBLY PROCEDURE
Page 72
ESAB FABRICATOR 141i
2
3
4
5
1
1
A-12931
7.05 Rear Panel Removal
CAUTION
!
1. Remove the rear panel screws.
2. Disconnect the gas tube.
3. Disconnect Input Cord ground wire.
4. Disconnect the four wires from the switch.
5. Disconnect FUNS Harness from the control PCB2.
Read and follow safety information in Section 6.02 before proceeding with disassembly.
DISASSEMBLY PROCEDURE 7-6 Manual 0-5448
Page 73
ESAB FABRICATOR 141i
1
1
4
3
A-12932
7.06 ON/ OFF Switch SW1 and Power Cord Removal
CAUTION
!
1. Gas inlet. Remove gas inlet from rear panel.
2. SW1 locking tabs
Squeeze the locking tabs and push SW1 out from the rear panel.
3. Strain relief screws
Remove the two screws from the strain relief.
4. Remove Fan.
5. Pull the Input Power Cord out. It may be necessary to use a flat blade screw driver against the strain relief
Read and follow safety information in Section 6.02 before proceeding with disassembly.
tabs, prying outward (Internal side if strain relief) to help remove the cord.
Manual 0-5448 7-7 DISASSEMBLY PROCEDURE
2
5
Art # A-12223
Page 74
ESAB FABRICATOR 141i
7.07 Base Panel Removal and Main PCB1 Disassembly
CAUTION
!
1. Remove Wire Feeder Screws.
2. Remove Inductor Screws.
3. Remove Central Panel Screws.
4. Remove Main PCB1 assembly Screws.
5. Remove Rectifiers.
6. Remove the feet of Main PCB1 assembly.
7. Heatsink on Main PCB1 assembly.
8. Main PCB1 assembly.
Read and follow safety information in Section 6.02 before proceeding with disassembly.
DISASSEMBLY PROCEDURE 7-8 Manual 0-5448
Page 75
8.01 Installing Base panel
4
1. Main PCB1 assembly.
2. Heatsink on Main PCB1 assembly.
3. Install the feet of Main PCB1 assembly.
4. Install Rectifiers (torque 15 kgfcm).
5. Install Inductor.
6. Install Main PCB1 assembly screws.
7. Install Central Panel Screws.
8. Install Wire Feeder Screws.
ESAB FABRICATOR 141i
SECTION 8:
ASSEMBLY PROCEDURES
1
2
3
6
Art # A-12089
Manual 0-5448 8-1 ASSEMBLY PROCEDURES
8
5
7
Page 76
ESAB FABRICATOR 141i
1
1
3
2
6
4
5
A-12933
8.02 Installing Rear panel
1. Install gas inlet.
2. Install ON/OFF switch
3. Install wire cord and 2 screws.
4. Reconnect Input Wire on the ON/OFF switch.
5. Install fan.
6. Install plastic inserts into rear panel feet and install panel screws.
ASSEMBLY PROCEDURES 8-2 Manual 0-5448
6
Art # A-12222
Page 77
8.03 Installing Front Panel
2
1
A-12934
1. Reinstall output terminals on front panel with 27mm wrench.
2. Place Display PCB3 and Remote Interface PCB4 assembly into front panel and install screws.
ESAB FABRICATOR 141i
3. Reconnect torch polarity cable to the torch connector.
4. Reconnect positive output terminal bolts and tighten with 17mm wrench. ( Note: reconnect wires, pay attention to the wire color.)
5. Reconnect negative output terminal bolts and tighten with 17mm wrench. (Note: reconnect wires and pay attention to the wire
color.)
3
5
Art # A-12182
4
6. Reconnect the harness to the connectors on Display PCB3 and Remote Interface PCB4.
Manual 0-5448 8-3 ASSEMBLY PROCEDURES
Page 78
ESAB FABRICATOR 141i
6
8.04 Installing Control PCB2 and Clear Protective Sheet
Art # A-12183
1. Install 4 screws.
2 Plug harness into DRIVE connector.
3. Plug harness into SOURCE connector.
4. Plug harness into CR connector.
5. Plug harness into FUNs connector
6. Plug harness into NTCs connector.
7. Plug harness into IGBT OT connector .
8. Plug harness into GUN connector.
9. Plug harness into QF/DY connector.
10. Plug harness into WVIN connector.
11 Plug harness into MB connector.
12. Plug harness into PWM connector.
13. Plug harness into IFB connector.
Verify harness connections with the system schematic to ensure all connections are correct.
14. Install clear protective sheet.
ASSEMBLY PROCEDURES 8-4 Manual 0-5448
Page 79
ESAB FABRICATOR 141i
12
11
10
9
8
7
6
5
4
3
13
2
14
Art # A-12184
Manual 0-5448 8-5 ASSEMBLY PROCEDURES
Page 80
ESAB FABRICATOR 141i
8.05 Installing Case
1. Install Case.
2. Install Ground Screw, which connects the ground wire to the cover.
3. Install Screws. Tighten screws.
1
Tighten Screws
Front & Rear
Install Screws
2
Art # A-12092
ASSEMBLY PROCEDURES 8-6 Manual 0-5448
Page 81
Notes
ESAB FABRICATOR 141i
Manual 0-5448 8-7 ASSEMBLY PROCEDURES
Page 82
ESAB FABRICATOR 141i
Notes
ASSEMBLY PROCEDURES 8-8 Manual 0-5448
Page 83
SECTION 9: KEY SPARE PARTS
9.01 Tweco Fusion 140A MIG Gun Parts
ESAB FABRICATOR 141i
Torch Part No: 1017-1321
Art# A-11672_AB
Item
No.
1Velocity Nozzle**
2
3
4Conduit Assembly*WS42-3035-151420-1140
5A
5
5B Tweco Control Wire35K-350-12000-2352
5C
DescriptionPart No.
VNS-501220-1201
VNS-50F1220-1200
VNS-621220-1203
VNS-62F1220-1202
VNS-371220-1206
VNS-37F1220-1204
VNS-75FAS1220-1205
VTS-231110-1308
VTS-301110-1309
VTS-351110-1310
VTS-401110-1311
Velocity Contact
Tip**
Handle / Trigger
Repair Kit
Tweco Rear
Connector
Tweco Control Wire
& Plug
VTS-451110-1312
VTS-521110-1314
VTS-116 1110-1315
VTSA-1161110-1317
VTSA-3641110-1313
VTS-5641110-1316
F82020-2025
350-174H 2035-2110
WS-354-TA-LC2060-2141
Table 9-1: Tweco Fusion 140A MIG Gun Parts
Figure 9-1
Manual 0-5448 9-1 KEY SPARE PARTS
** Patent Pending
* Refer to ESAB Catalog No. 64-2103 for additional
options.
Page 84
ESAB FABRICATOR 141i
9.02 Power Source
A-11811_AB
Art #
31
KEY SPARE PARTS 9-2 Manual 0-5448
Figure 9-2
Page 85
ESAB FABRICATOR 141i
FABRICATOR 141i POWER SOURCE SPARE PARTS
ITEM PART NUMBER DESCRIPTION
1W7006216PCB,Power,141i
2W7006227PCB,Control,141i
3W7003033Solenoid,Valve,24VDC
4W7006226PCB, Remote Interface Integrated with Display, 141i
5W7006209Wiredrive Assy,w/ Motor,141i
6W7004906Feedroll retaining thumb screw
77977036Feed Roll .024(0.6mm)-.030"(0.8mm) V groove Installed
8W7004947Fan,24VDC,4.75"x4.75"x1",141i
TIG Torch, 17V, 12.5 ft, 8 pin and accessory kit with 1/16", 3/32", 1/8" thoriated tungstens; 1/16", 3/32", 1/8" collets; 1/16", 3/32", 1/8" collet bodies; No.
5, 6, 7 Alumina nozzle; short back cap; long back cap
Fabricator 141i- 181i Carry Bag
Basic 4 Wheel Cart
Foot Control for remote amperage control when TIG welding
ESAB WeldSkill Auto-Darkening Helmet Skull & Fire (USA Only)
Drive Roll .023" - .035" (0.6-0.9mm) V groove for steel & stainless steel
Drive Roll .023"- .030" (0.6-0.8mm) V groove for steel & stainless steel wires
[Fitted]
Drive Roll .035"/.045" (0.9/1.2mm) V groove for steel & stainless steel wires
Drive Roll .030"-.035" (0.8-0.9mm) U grooved for aluminum wires
Drive Roll .040"-.045" (1.0-1.2mm) U grooved for aluminum wires
Drive Roll .030"-.035" (0.8-0.9mm) V knurled groove for flux cored wires
Drive Roll .045" (1.2mm) V knurled groove for flux cored wire
STICK KIT, 25mm DINSE
WTL ground clamp with 16 mm2 lead and 25 mm2 dinse, 10ft (3.1m) long
F140TA-10-30351017-1321
SG160TA-12-3035 1027-1390
W4013802
W4015301
W4014700
600285
4100-1004
W4014800
7977036
7977660
7977731
7977264
7977732
704277
W4009401
WTL electrode clamp with 16 mm2 lead and 25 mm2 dinse, 13ft (4m) long
Victor Argon Flowmeter/ Regulator
Accessory Kit for TIG Torch with 1/16", 3/32", 1/8" thoriated tungstens; 1/16",
3/32", 1/8" collets; 1/16", 3/32", 1/8" collet bodies; No. 5, 6, 7 Alumina nozzle;
short back cap; long back cap
Power Adapter, 115V, 20A- 15A
Table 10-1: Fabricator 141i Options and Accessories List