ALDI Workzone Welder 140amp (Mma140)

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com
Instruction Manual
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.co
140 AMP
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Inverter Welder
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WARNING!
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Read this Instruction Manual

carefully before using the welder
and keep it in a safe place for
future reference.
all
01904 727506
01247 5150
MODEL: MMA-140, 76597, 9/2017

3
YEAR WARRANTY
Version Number: 001
All manuals and user guides at all-guides.com
Contents
Introduction.............................................................................................................3
Product image...............................................................................................................................5
Intended usage.............................................................................................................................6
Product specification...................................................................................................................7
Contents....................................................................................................................8
Safety instructions.......................................................................................................................9
Additional precautions..............................................................................................................14
Warning symbols........................................................................................................................15
Controls......................................................................................................................17
Rating information ....................................................................................................................18
Operation..................................................................................................................21
Maintenance..............................................................................................................23
Storage/transport.........................................................................................23
Disposal.......................................................................................................................23
Troubleshooting .........................................................................................................................24
Exploded view ............................................................................................................................25
Parts list.......................................................................................................................................26
140AMP Inverter Welder Introduction
Introduction
Congratulations on choosing to buy a WORKZONE TITANIUM®

product.
All products brought to you by WORKZONE TITANIUM® are
manufactured to the highest standards of performance and
safety, and as part of our philosophy of customer service and
satisfaction, are backed by our comprehensive 3 Year Warranty.
We hope you will enjoy using your purchase for many years to
come.
3
AFTER SALES SUPPORT GB 01904 727506 IRE 01247 5150 www.coreservice.co.uk MMA-140 76597 09/2017
Introduction 140AMP Inverter Welder
Recommendations:
Read the entire text of the instruction manual prior to the assembly
and operation of the device.
This instruction manual is intended to make it easier for you
to get familiar with your device and utilize its intended possibilities
of use.
The instruction manual contains important notes on how to work
safely, properly and economically with your machine and how to
avoid dangers, save repair costs, reduce downtime, and increase the
reliability and working life of the machine.
In addition to the safety regulations contained herein, you must in
any case comply with applicable regulations of your country with
respect to the operation of the machine.
Put the instruction manual in a clear plastic folder to protect
them from dirt and humidity, and store them near the machine. The
instructions must be read and carefully observed by each operator
prior to starting the work. Only persons who have been trained
in the use of the machine and have been informed on the related
dangers and risks are allowed to use the machine.
In addition to the safety notes contained in this instruction manual,
any local regulations and general technical rules for the operation of
welding machines must be followed.
4
AFTER SALES SUPPORT GB 01904 727506 IRE 01247 5150 www.coreservice.co.uk MMA-140
MMA-14053528
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140AMP Inverter Welder Product Image
Digital display Output current control

( see details on page.18)
Negative output
terminal for earth clamp
Positive output terminal for

electrode holder
Earth cable with earth

clamp
Welding cable with electrode holder
Protective mask
Combination wire
brush and chipping
hammer
5
Intended Usage 140AMP Inverter Welder
IMPORTANT
Read instruction manual before operating this equipment.
Please pay particular attention to all sections of this manual
that carry warning symbols and notices.
WARNING!
This is a Warning symbol. This symbol is used throughout
m
the manual whenever there is a risk of personal injury.
Ensure that these warnings are read and understood at all
times.
CAUTION!
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This is a Caution symbol. This symbol is used throughout
the instruction manual whenever there is a risk of damaging
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your product. Ensure that these warnings are read and
understood at all times.
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Intended usage
MMA-140 has been designed for repairs, maintenance and serious
DIY applications around the home or garage. The inverter Arc
technology makes it suitable for use on a wide range of projects
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such as gates, trailers and general metal fabrication. It is suitable for

use with 1.6-3.2mm electrode sizes.
This welder is for domestic use only and is not intended for trade,
all
commercial or industrial use.
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140AMP Inverter Welder Product Speci cation
Item no MMA-140
Type Inverter Arc
Input 240V ~ 50Hz
Phase No. 1
Output current 20-140amps
Rated duty cycle 15%@140amps
Open circuit voltage 72V
Cooling type Fan cooling
Case protection class IP21S(Not suitable for use in rain)
Dimension 280x120x230mm
Static characteristic Dropping characteristic
Weight 5 Kg
7
Contents 140AMP Inverter Welder
Contents
1 X Inverter welder
1 X Earth cable with earth clamp
1 X Welding cable with electrode holder
1 X Combination wire brush and chipping hammer
1 X Protective mask
1 X Shoulder strap
1 X Instruction manual
• Open the packaging and remove the device carefully.

• Remove the packaging material as well as the packaging and
transport bracing (if available).
• Check that the delivery is complete.
• Check the device and accessory parts for transport damage.
• If possible, store the packaging until the warranty period has expired.
WARNING!
The device and packaging materials are not toys!
Children must not be allowed to play with machine and accessories!
Plastic bags are a choking risk for children!
8
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140AMP Inverter Welder Safety Instructions
Safety instructions
WARNING!
The user of this welder is responsible for his own and the safety of others.
It is most important to read, learn and respect the rules in this user guide.
When using this welder, basic safety precautions, including the following,
injury. Make sure that you have read all of these instructions before using
this welder. Keep this booklet in a safe place for future reference.
Persons who are not familiar with this booklet should not use the welder.
Training
The operator should be properly trained to use the welding machine
safely and should be informed about the risks relating to arc welding
procedures. This manual does not attempt to cover welding technique.
this aspect especially for any welds requiring high integrity for safety.
The welding process produces sparks, droplets of fused metal, metal

projectiles and fumes.
extinguisher on hand.
Work area
Ensure a clear work area with unrestricted movement for the operator.
9
Safety Instructions 140AMP Inverter Welder
Workpiece
The workpiece will remain at a high temperature for a relatively long
period. Do not touch the weld or the workpiece unless you are wearing
welding gloves. Always use pliers or tongs.
Never touch the welded material with bare hands until it has been
allowed to cool.
Welding surfaces
• Do not weld on containers or pipes that hold, or have held,
• Do not weld coated, painted or varnished surfaces as the
Ventilate the work area

Arc welding emits fumes which can be dangerous. Make sure that
the work area is well ventilated.
Avoid electrical contact

Use adequate electrical insulation with regard to the electrode, the
workpiece and any accessible earthed metal parts in the vicinity.
Avoid direct contact with the welding circuit. The no load voltage
between the earth clamp and the electrode can be dangerous
under certain circumstances.
For additional protection from electric shock

It is recommended that this tool be used in conjunction with
a residual current device (RCD) with a rated residual current of
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AFTER SALES SUPPORT GB 01904 727506 IRE 012475150 www.coreservice.co.uk MMA-140
MMA-14053528
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30mA or less. Please contact our After Sales Support for further
information.
Extension leads
In general these are best avoided. If used however make sure that
the extension lead used with the welder is of a suitable current
m
rating and has an earth connection. If using the welder outdoors
make sure that the extension cable is suitable for outdoor use.
Always keep cables and extension leads away from the welding
zone and any hot materials.
Consider work area environment

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Do not expose the welder to rain. Do not use it in damp, or wet
locations. Keep the work area well lit.
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Dress properly
using the welder. Avoid exposing skin to the ultraviolet rays

produced by the arc.
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Always use the welding mask

all
Under no circumstances should the welder be operated unless the

welding mask is protecting the eyes and face. There is a serious
risk of eye damage if the mask is not used. The sparks and metal
projectiles can cause serious damage to the eyes and face. The light
radiation produced by the arc can cause damage to eyesight and
burns on the skin. Never remove the welding mask whilst welding.
11
Safety Instructions 140AMP Inverter Welder
Safety glasses
After welding use safety glasses when brushing, chipping, grinding
the slag from the weld.
Other persons
Ensure that other persons are screened from the welding arc and
are at least 15 metres away from the workpiece. Always ensure that
the welding arc is screened from onlookers, or people just passing
Keep children and animals away

Do not let children or animals have access to the welding
equipment or to the work area.
the electrode holder down with the welder switch On. When leaving
and disconnect the welder from the mains supply. Do not leave hot
material unattended after welding.
Welding cables
Keep the welding cables, earth clamp and electrode holder in good
condition. Failure can result in poor welding quality and could be
dangerous in structural situations.
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Check damaged parts

Before further use of the welder, any part that is damaged should
be carefully checked to determine that it will operate properly and
perform its intended function. Check for breakage of parts and
damaged should be properly repaired, or replaced by an authorised

service centre.
Improper use
Do not use this welder for pipe thawing.
Handling
practices when lifting.
13
Additional Precautions 140AMP Inverter Welder
Additional Precautions
Welding operations
• In environments with increased risk of electric shock;
MUST BE evaluated in advance by an “expert supervisor” and

must always be carried out in the presence of other people
trained to intervene in emergencies.
Position and handling
Position the welding machine on a horizontal surface that
is able to support the weight: otherwise (e.g. inclined or
The operator MUST NOT BE ALLOWED to weld in raised

positions unless safety platforms are used.
Voltage between electrode holders or torches

Working with more than one welding machine on a single
piece or on pieces that are connected may generate a
dangerous accumulation of no-load voltage between two
may reach double the allowed limit.

Improper use
It is hazardous to use the welding machine for any work
other than that for which it was designed. Example do not
use this welder for pipe thawing.
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140AMP Inverter Welder Warning Symbols
Warning Symbols
The following warning symbols are displayed on the unit to remind

you of the safety precautions you should take when using the
welder.
WARNING!
Read instruction manual before operating this equipment.
WARNING!
When using this welder, avoid direct contact with
the welding circuit. The no-load voltage supplied by
the welding machine can be dangerous in certain
circumstances.
WARNING!
When using this welder, provide adequate ventilation or
facilities for the removal of welding fumes near the arc; a
systematic approach is needed in evaluating the exposure
limits for the welding fumes, which will depend on their
composition, concentration and the length of the exposure
itself. Do not operate on materials cleaned with chlorinated
materials (e.g. wood, paper, rags etc.) from the working area.
WARNING!
Do not weld on containers or piping that contains or has
weld on containers under pressure.
15
Warning Symbols 140AMP Inverter Welder
WARNING!
When using this welder, always use a welding mask. Use
the skin to be exposed to the ultra violet and infrared rays

produced by the arc; other people in the vicinity of the arc
m
WARNING!
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uid
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140AMP Inverter Welder Controls
Controls
Welding current display Power indicator

The digital display shows This indicator lights green means
the welding current. power is on.
Current adjust
Adjust this knob to set
output current.
Over temperature indicator

When the indicator lights yellow. This indicates
that the duty cycle of the machine has been
exceeded. Allow the unit to cool for 20 minutes
to reset before resuming welding.
17
Rating information 140AMP Inverter Welder
Rating information
following symbols and information.

Sumec UK Co. Ltd,
Unit A&B, Escrick Business Park, Escrick,
R
WORKZONE
York YO19 6FD
SN.00001-06435
SAN: 0181800341ZB
EAN 60974-1
60%
2 70A
U = 72V
2 22.8V
U = 230V
Warning: Read instruction manual

before operating this equipment.
1~ f1
f2
Single phase frequency conversion
and rectifier U0 Output open circuit voltage
Mains supply, single phase A.C. 50Hz” MMA Welding
U1 IP21S
Degree of protection against
Rated input voltage
intrusion of water and solid bodies
50HZ Rated input frequency
I1 MAX Maximum input current
I1 Eff Rated input current
X Duty cycle at rated current
I2 Conventional output current range
U2 Welding voltage at rated current
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140AMP Inverter Welder Rating Information
Assembly
The Earth cable with clamp (earth clamp) and welding cable with
clamp (electrode holder) are easily connected to the machine by
inserting the quick connector and twisting it clockwise. Always
Use earth clamp to clamp the workpiece.

Use electrode holder to hold electrode.
You can refer to page 5 for the connection or below line drawing.
CAUTION!
plugs clockwise and ensure that they are tight in the sockets. Loose
connectors will overheat, damage the unit and void warranty.
19
Rating Information 140AMP Inverter Welder
Selection of electrode
There is no hard and fast rule by which a particular gauge of

electrode is selected. Usually this is determined by, the type of weld
required and the thickness of the workpiece. E.g. a butt weld in
1.5mm sheet metal can be done by a 1.6mm or 2.5mm electrode,
quicker. The table below gives guidance as to which electrode is

most suitable according to the welding current. This table is only a
guide, and values given are an indication only.
Amperage Selection Guide

Rod Size Welding Current
1.6mm 40 - 50 Amps
2.0mm 50 - 75 Amps
2.5mm 75 - 105 Amps
3.2mm 105 - 140 Amps
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140AMP Inverter Welder Operation
Operation
Before commencing, make sure that your hand held welding mask
or welding helmet is in position to protect your eyes. Wear gloves
burns.
m
Please note your MMA-140 inverter welder is only ideal for arc
welding.
Turn on switch
Power switch is at the back of machine. .co
When the switch is in the “0 ” position means the power OFF.
es
When the switch in the “1” position means the power is ON, and the
switch will light red.
Striking arc
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This is done by bringing the electrode into contact with the

workpiece using a light tapping action and withdrawing to create a
gap of 1.5 mm – 3.00 mm.
-g
Maintaining arc
Having created an arc, all that is necessary to maintain it is to
all
proceed steadily in one direction keeping the gap between the

electrode and the workpiece constant.
gap, and in doing so will melt the electrode core wire and protective
transferred to the workpiece under a protective slag formed by the
21
Operation 140AMP Inverter Welder
with a pointed tool or a welders’ chipping hammer.
Stop welding
All that is required is to withdraw the electrode from the workpiece
thus breaking the circuit. Be careful with the end of the electrode,
as it will be hot! Provided the current setting is correct, the surface
of the workpiece will also melt by the intensity of the electric arc. A
degree of “penetration” is thereby obtained, and a complete “fusion”
of the workpiece and the deposited electrode is met.
Tip
Keep the welding current as low as possible for the job at hand to
maintain the best duty cycle from your welding machine, prevent
Thermostatic protection
This welder is automatically protected from overheating by a
thermal overload cut-out protector.
If the transformer overheats, the overload cut-out protector will
cut out has operated.

After cooling, the protector will reconnect the supply circuit and the
welder will be ready for further use.
NOTE: If the duty cycle of the machine is exceeded, the thermostatic
protection will activate.
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140AMP Inverter Welder Maintenance
Maintenance
WARNING!
Before starting any cleaning, or maintenance procedures on
disconnected from the mains supply.

There are no user serviceable parts inside the welder. Refer to a
After use, wipe the unit down with a clean soft dry cloth.
Storage/transport
Store the equipment and accessories out of children’s reach in a dry
place. If possible store the welder in the original packaging.
The appliance must unconditionally be secured against falling or
rolling over during transport.
Disposal
Disposing of the packaging
materials. Reuse of recycled material decreases pollution in

the environment. Please recycle packaging where facilities
exist. Check with your local council authority for recycling
advice.
Disposing of the welder

Welders that are no longer usable should not be disposed
of with household waste but in an environmentally friendly
way. Please recycle where facilities exist. Check with your
local council authority for recycling advice.
23
Troubleshooting 140AMP Inverter Welder
Troubleshooting
Faults Remedy
Power indicator is 1. Check that the unit is plugged into the 240V mains outlet and
not lit, fan does not is switched on.
work and no output 2. Check that the mains fuse or breaker has not operated.
current
3. Check that the main switch on the rear of the unit is in the on
position.
Power indicator is 1. Check if welding cables are connected correctly.
lit, fan works, no 2. Check output connectors not disconnected or damaged.
output current
3. Check that the earth clamp is connected securely to the
workpiece and that the contact point is clean of paint or rust.
Over temperature 1. Duty cycle of the unit has been exceeded. Allow the unit to
indicator is on, no cool for 20 minutes.
output current
Output current is 1. Check mains voltage is constant.
not stable 2. Check welding cable connectors are tight in the sockets.
3. Check earth clamp connection to the workpiece.
4. Check welding leads are not reversed.
If the machine fails to work after maintenance and checks, please

contact our after sales support centre.
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140AMP Inverter Welder Exploded view
Exploded view
25
Parts list 140AMP Inverter Welder
Parts list
1 Belt
2 Combination screw
3 Handle
4 Machine cover
5 Plastic shutter
6 Windshield board
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7 Aluminium radiator
8 Capacitor
9 Silicon bridge
10 Relay
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11 Main PCB board
12 Transformer
13 Insulation paper
14 Combination screw
15 Tapping screw
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17 Plastic front panel
18 LED display
19 Potentiometer
20 Dinse socket
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21 Dinse plug
22 Earth clamp
23 Welding holder
25 Cable
26 Base casing
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27 Fan
28 Plastic back panel
29 ON/OFF switch
30 Power cable
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31 Cable connector
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MODEL: MMA-140 PRODUCT CODE: 76597 09/2017

Spend a little Live a lot
Great care has gone into the manufacture of this product and it should therefore
provide you with years of good service when used properly. In the event
of product failure within its intended use over the course of the first 3 years
after date of purchase, we will remedy the problem as quickly as possible
once it has been brought to our attention. In the unlikely event of such an
occurrence, or if you require any information about the product, please
contact us via our helpline support services, details of which are to be found
both in this manual and on the product itself.
GB IRE
PRODUCED IN CHINA FOR:

ALDI STORES LTD. PO BOX 26, ATHERSTONE
WARWICKSHIRE, CV9 2SH.
ALDI STORES (IRELAND) LTD.

PO BOX 726, NAAS, CO. KILDARE.
Visit us at www.aldi.com
01904 727506
01247 5150
MODEL: MMA-140, 76597, 9/2017

3
YEAR WARRANTY

ALDI Workzone Welder 140amp (Mma140)

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All manuals and user guides at all-guides.

Read this Instruction Manual

MODEL: MMA-140, 76597, 9/2017

140AMP Inverter Welder Introduction

Congratulations on choosing to buy a WORKZONE TITANIUM®

Introduction 140AMP Inverter Welder

140AMP Inverter Welder Product Image

Digital display Output current control

Positive output terminal for

Earth cable with earth

Welding cable with electrode holder

Intended Usage 140AMP Inverter Welder

such as gates, trailers and general metal fabrication. It is suitable for

commercial or industrial use.

140AMP Inverter Welder Product Speci cation

Contents 140AMP Inverter Welder

• Open the packaging and remove the device carefully.

140AMP Inverter Welder Safety Instructions

The welding process produces sparks, droplets of fused metal, metal

Safety Instructions 140AMP Inverter Welder

• Do not weld coated, painted or varnished surfaces as the

Ventilate the work area

Avoid electrical contact

For additional protection from electric shock

140AMP Inverter Welder Safety Instructions

Consider work area environment

using the welder. Avoid exposing skin to the ultraviolet rays

Always use the welding mask

Under no circumstances should the welder be operated unless the

Safety Instructions 140AMP Inverter Welder

Keep children and animals away

140AMP Inverter Welder Safety Instructions

Check damaged parts

damaged should be properly repaired, or replaced by an authorised

practices when lifting.

Additional Precautions 140AMP Inverter Welder

MUST BE evaluated in advance by an “expert supervisor” and

The operator MUST NOT BE ALLOWED to weld in raised

Voltage between electrode holders or torches

may reach double the allowed limit.

140AMP Inverter Welder Warning Symbols

The following warning symbols are displayed on the unit to remind

weld on containers under pressure.

Warning Symbols 140AMP Inverter Welder

the skin to be exposed to the ultra violet and infrared rays

140AMP Inverter Welder Controls

Welding current display Power indicator

Over temperature indicator

Rating information 140AMP Inverter Welder

following symbols and information.

Warning: Read instruction manual

Mains supply, single phase A.C. 50Hz” MMA Welding

50HZ Rated input frequency

I1 MAX Maximum input current

I1 Eff Rated input current

X Duty cycle at rated current

I2 Conventional output current range

U2 Welding voltage at rated current

140AMP Inverter Welder Rating Information