AHP alphaMIG 231ms User manual

OPERATOR’S MANUAL
SAFETY AND USE INSTRUCTIONS
alphaMIG 231ms
Serial Number
Purchase Date (Attach Receipt to Cover For Proof of Purchase)
Need Information?
Contact:
[email protected]
925-391-3599
Technical Issues?
Contact:
[email protected]
925-391-3599 (Ext. 102)
Issue Date: 04/25/2023
Publication: AHP231MS-0307
© Ahp Welding Systems 380 Swift Ave. #11 South San Francisco, CA 94080

2
CONTENTS
Shipping Issues? 3
CA Proposition 65 Warning 4
Safety First Information 5
Safety Warning, Dangers, Cautions and Instructions 6
About the AlphaMIG 231ms 9
Warranty Statement 9
Specifications 10
Generator Operation Information 11
Duty Cycle Performance 11
Routine Required Maintenance 11
Shielding Gas and Regulator Information 12
Adjusting the Regulator 13
Installing the MIG Gun 14
MIG/Flux-Cored Polarity 14
MIG Wire Installation and Tensioning 15
Spool Gun Installation 18
Stick Polarity and Electrode Types 19
Front Panel View 20
Rear Panel View 21
Operator Panel 22
Series 24KD MIG Torch 23
Explanation of Terms and Features/MIG and Stick 24
Dragging Versus Pushing Technique 28
Different Types of Welds 29
7 Pin Connector 30
Troubleshooting 31
Quick Setup Guide 32
NOTICE: This AHP welding product is designed for use by individuals with a both knowledge and skills in MIG ,TIG
and Stick welding. It is designed with commercial operation in mind. AHP cannot be held accountable for instruc-
tion and training of inexperienced users or damage or malfunctions that may result from use by inexperienced us-
ers or improper installation. If you do not have the skill level or knowledge base to properly operate and install
this machine, do not use this machine until proper training and instruction has been received. This manual is not
intended to be an exhaustive welding guide or a “how-to” manual for beginners. Please seek out qualified instruc-
tion on welding that focuses on welding safety and operation if you are unsure of your capabilities before attempt-
ing to use this unit .

3
IMPORTANT! This unit has been thoroughly tested and inspected for function at the factory. However, you should be prepared to inspect
and test this unit completely within 72 hours after receipt. Please do not delay in doing this. Ahp needs to know if there is any damage
caused in shipping as soon as possible. Damage caused by shipping and discovered after 30 days due to lack of inspection will not be
covered under the free 30 day shipping policy.
Please contact us immediately should you have any questions or concerns about the welder after delivery. We’ll be glad to help.
SHIPPING ISSUES?

4
WARNING!
California Proposition 65 Warning:
This product, when used for welding or cutting, produces
fumes or gases which contain chemicals known to the State
of California to cause birth defects and, in some cases, can-
cer. (California Health & Safety Code § 25249.5 et seq.)
Warning: Cancer and/or Reproductive Harm
www.P65warnings.ca.gov
NOTICE:
Due to our constant effort to improve our products, specica-
tions are subject to change without notice or revision to this
manual. In addition, minor changes in product cosmetics,
accessory type and quantity may change without notice.
These do not constitute a major change in function or opera-
tion.
Ahp Welding Systems makes no warranty for merchantability
or tness for a particular purpose or application. Any claims
of such are expressly denied by Ahp Welding Systems. Fur-
thermore, Ahp Welding Systems does not accept liability for
injury or damages, consequential or incidental, resulting
from the use of this product or resulting from the content
found in this document or accept claims by a third party of
such liability.

5
SAFETY FIRST!
Ahp Welding Systems takes safety seriously. You should as well. Please read
this entire manual before using. Keep a copy of this manual available for all
employees or potential users of this machine to read and thoroughly review
before use.
No matter how detailed may be nothing can substitute for careful planning
and common sense required to operate and safe work environment.
Welding is an inherently dangerous activity. Failure to follow safety protocols
while welding may result in severe burns, blindness, severe shock, or death
from electrocution.
BE AWARE OF YOUR WORK AREA AND THE WHO OR WHAT IS IN IT!
AS THE USER OF THIS PRODUCT YOU ARE RESPONSIBLE FOR YOUR OWN
PERSONAL SAFETY AND FOR THE SAFETY AND SECURITY OF THE PEOPLE
AND ITEMS AROUND YOU!
If you feel you do not have the resources to provide a safe work environment,
or do not have the skills or (for whatever reason) the capability to safely oper-
ate this unit, do not use this unit until you seek professional instruction in safe
operation and care of this unit.
NOTICE:
Welding and cutting operations may generate undesira-
ble High Frequency (HF) and EMF energy. This can in-
terfere with surrounding electronic equipment such as
computers, routers, CNC equipment, televisions, radios,
uorescent lighting etc. If disturbance in surrounding
electrical and electronic equipment is noted, consult a
licensed electrician to help properly ground surrounding
equipment to limit the interference. This machine may
cause GCFI and ground fault outlets to malfunction.
This unit is designed to be operated on a dedicated,
properly grounded circuit.

6
Safety Warnings, Dangers, Cautions and Instructions
NOTICE. This unit manual is intended for users with basic knowledge and skillset in welding. It is
your responsibility to make certain that the use of this welder is restricted to persons who have read,
understand and follow the warnings and instructions in this manual. If you or the operator needs
further instruction, contact AHP welding support or seek qualified professional advice and training.
WARNING! High Frequency (HF) energy can interfere with the operation of pacemakers and can dam-
age pacemakers. Consult with your physician and pacemaker manufacturer before entering an area
where welding and cutting equipment is in operation and before using this welder. Some pacemak-
ers have limited shielding. Alert any users or customers of this potential problem.
WARNING! Use approved safety glasses with wrap around shields and sides while welding and work-
ing in the weld area or serious eye damage or loss of vision may result. Use a grinding shield in
addition to the safety glasses during chipping and grinding operations.
WARNING! When welding always use an approved welding helmet or shielding device equipped with
at least an equivalent of a shade 9 or greater. Increase the shade number rating as amperage in-
crease over 100 amps. Inspect helmet for cracks in lenses and in the helmet. Keep lens covers in
good condition and replace as necessary.
WARNING! Welding/cutting operations carry inherent risks which include but not limited to possible
cuts burns, electrical shocks, lung damage, eye damage and even death. Take all appropriate
measures to use proper Personal Protective Equipment (PPE). Always use leather welding gloves,
closed toe (preferably reinforced or steel toe leather shoes, and long-sleeved flame resistant clothing
(i.e. denim). Do not wear Poly/Nylon blend materials.
DANGER! Welding/cutting poses shock and electrocution risks. Keep this welding equipment dry. Do
not weld in the rain or where moisture accumulates. Use dry, rubber soled shoes, gloves and cloth-
ing when welding. Do not rest or contact work clamp (ground) when welding. Keep all parts of the
body insulated from the part being welded when possible. Do not touch terminals or connections
while the unit is on. Consider all parts to be “live” at all times even if no live work is being per-
formed. Do not use frayed welding cables.
CAUTION! Fires are possible but also preventable while welding. Always remove flammable rags,
papers, and other materials from the weld area. Keep rags stored in an approved flame proof canis-
ter. Keep a fully charged fire extinguisher at hand. Remove any fuels, oils, paint, pressurized spray
cans, and chemicals from the weld area. Make sure any smoke/fire detectors are function properly.
Do not weld on tanks, drums or barrels, especially if pressurized or sealed. Do not weld on any con-
tainer that previously held fuel or chemicals. Make sure the weld area is clear of flammable materi-
als such as grass or wood shavings solvents and fuels. Do not wear frayed or loose clothing. Visual-
WARNING! Welding gas cylinders are under high pressure. Keep all gas cylinders upright and
chained to a cart or held safely in a safety holding pen. Never transport gas cylinders in an enclosed
car van or other vehicle. Transport gas cylinders securely. Keep all cylinders capped while not in use
or during transport. Replace the cap on the cylinder when it is going to be more than 24 hours be-
fore use. Do not use or attempt to repair faulty regulators. Never weld on gas cylinders. Keep gas
cylinders away from direct sparks.

7
Safety Warnings, Dangers, Cautions and Instructions
DANGER! Welding and cutting operations pose serious inhalation hazards. Some of these hazards
are immediate while others are cumulative in their effect. Do not weld in enclosed spaces or in
areas without adequate ventilation. Fumes and gases released in the welding and cutting opera-
tions can be toxic. Use fans or respiration equipment to insure adequate ventilation if you are
welding in a shop or garage area. Do not weld on galvanized metal under any circumstance. You
may develop metal fume fever. Symptoms are similar to lu-like symptoms. Seek medical advice and
treatment if you are exposed to galvanized welding fumes.
If you experience any eye burning, nose or throat irritation while welding, these are signs that you
need more ventilation.
If you feel these symptoms:
• Stop work immediately and relocate work area with better ventilation.
• Wash and clean your face and hands.
• Stop work completely and seek medical help if irritation persists
DANGER! Never use brake cleaner or any chlorinated solvent to clean or degrease metal scheduled
to be welded or other related equipment in the area being welded. The heating of this cleaner and
its residue will create highly toxic phosgene gas. Small amounts of this vapor are harmful and
can lead to organ failure and death. If degreasing of a part is necessary, use Acetone or an ap-
proved pre-weld cleaner. Use the proper personal protective equipment (PPE) when handling any
cleaners/solvents.
DANGER! People with pacemakers should consult a physician and pacemaker manufacturer before
welding. There is a potential for damage or serious malfunction resulting in death. High Frequen-
cy energy (HF)/Electromagnetic Fields generated during welding can interfere with pacemaker sig-
nals, even permanently damaging it. Some pacemakers offer some shielding, but restrictions re-
garding amperage proximity to the welding arc may be placed upon the individual. Warn all poten-
tial bystanders that they should exit the work area if they have a pacemaker or similar medical
equipment before welding. Severe electrical shock leading to injury or death may occur while using
the plasma cutter if the user becomes part of the circuit path. While the Amp output of the plasma
cutter is limited, the unit may produce an OCV of 300V or greater. Consult with a Physician if a
pacemaker is expected to be implanted.
DANGER! Never defeat or modify any safety guards or shields. Keep all safety covers and shields
in place.
Never place your fingers in or near a fan shroud or insert any object into the fan(s).
CAUTION! Trip Hazards exist around welders. Cords, cables, welding leads and hoses pose a trip
hazard. Be aware of their location and inform others of their location. Tape and secure them so
they will stay out of high traffic areas.

8
Safety Warnings, Dangers, Cautions and Instructions
CAUTION! Welded metal can stay hot long after welding is completed. Burns may occur. Always
wear gloves or use tongs/pliers when handling welded or cut metal. Remember the heat from the
metal may catch other material on fire. Always have a fire-proof area ready to place welded compo-
nents until they fully cool. Use soap stone or a metal marking marker to label the metal as “HOT”
to serve as a reminder to all present in the area.
CAUTION! Welding and cutting operations generate high levels of ultraviolet (UV) radiation which
can burn and damage skin and eyes. The intensity is so high that exposed skin and eyes can burn
in a few minutes of exposure. Minimize direct skin and eye exposure to this intense form of radia-
tion by using proper PPE and sun screen where appropriate.
CAUTION! Do not allow untrained, unqualified bystanders to observe welding. Do not allow others
without proper Personal Protection Equipment (PPE) suitable for welding to stand in the welding
area or to observe welding and welding related activities. If protection is not readily available, use
a welding screen to separate the welding area from the rest of the area. If no protection or screen
is available, physically exclude them from the welding area by a wall or other solid divider. Keep all
pets and young children away from the welding area.
CAUTION! Electromagnetic Fields can be generated by this welder and radiate into the work place.
The effect of EMF is not fully known. Exercise caution when welding by: NOT draping welding leads
(guns/cables) over your shoulders or arms, NOT coiling them around your body, NOT inserting
yourself directly between the cables, and by NOT contacting the unit while welding. DO keep the
work clamp connected as close as possible to the area of the weld and directly to the object being
welded whenever possible.
DANGER! Never touch connectors or fittings while this machine is turned on. Keep all safety covers
in place when not in use.

9
Specications and Need-to-Know Information
alphaMIG 231ms
About the AlphaMIG 231ms
The AlphaMIG 231ms is a class-leading MIG/Stick welder design from
AHP. It is capable of MIG, Gasless Flux-cored, and DC Stick welding.
This combination of functions allows the user to cover a broad spec-
trum of welding needs. This unit’s design, combined with its out-
standing duty cycle, ends itself well to small fabrication and body
shops as well as production facilities.
The MIG process gives the user the ability to join nearly any metal.
Even aluminum can be joined with ease (1/8-5/16”). This unit can be
used with the optional spool gun which allows the user to weld Alumi-
num or the standard 10 ft. MIG gun equipped with the optional poly-
mer liner and optional U-groove drive rolls (best for .035 and .045”
wire).
The stick welding process provides excellent “on the job site” capabil-
ity for manufacturing and repair. This unit utilizes the latest in digi-
tally controlled IGBT inverter welding technology, while providing the
user with an easy-to-use interface. This unit will run most electrodes
up to 1/8” smoothly. When using electrodes with a cellulose flux base,
such as E6010 and E6011, the arc gap must be held tight.
The unit comes standard with the following items and features:
• Dual Voltage 120/240V operation capability
• 230A MIG, 180A DC Stick Output
• Spool Gun capable (Spool Gun is sold separately)
• Euro-Type Quick Connector
• 24 series MIG gun 3m (10 ft)
• 250A Stick Electrode Holder 2m (6.5ft)
• 250A work clamp 2m (6.5 ft)
• Billet Brass Floating Ball type MIG Ar/CO2 Gas regulator
• MIG Tips
• 240V to 120V Stepdown pigtail adapter
Ahp Warranty Statement
WARRANTY ONLY APPLIES TO UNITS WITH PROOF OF PURCHASE
FROM AN AUTHORIZED DEALER. NO EXCEPTIONS. PLEASE FEEL FREE
TO REQUEST A LIST OF AUTHORIZED DEALERS.
The AHP Golden Circle Warranty:
All new AHP welders, shall be warrantied to the original owner for a
period to extend for 3 years from date of purchase against breakage,
malfunction, or other unit failure resulting from manufacturing de-
fect. The faulty unit will either be repaired or an exchange will be
made for a new or factory reconditioned unit at AHP Welds discretion.
The customer must contact the technical support team to review unit
failure so that the warranty claim can be established. Items such as
electrodes, contact tips, nozzles, cups, shields, liners etc, considered
to be consumable items, are NOT covered under warranty. Torches,
foot pedals and spool guns are warrantied for a period of 6 months.
Additionally, certain items such as torches, foot pedals and easily
serviced parts may be individually exchanged without returning the
entire unit assembly should a failure with these items occur, at AHP
Welds discretion. AHP Welds will not be responsible for time/contract
loss from unit failure, damages occurring from improper or unskilled
operation, damages resulting from improper maintenance, improper
wiring, poor quality power sources, abuse or neglect. Nor will AHP
assume responsibility for the customer's failure to heed/read safety
instructions, to read and understand operator's manual, obey occupa-
tional laws or to ensure the unit's safe operation complies with state
or local laws, personal injury arising from the inherent risks involved
with welding, including burns, electric shock or death. Warranty ex-
tends only to the machine, its accessories and parts contained inside
as stated above. No other warranty is expressed or implied.
In the event of unit failure or malfunction, the customer must contact
AHP to obtain a location of a designated return/repair facility. The
replacement/repaired unit will then be returned to the customer.
Additionally for USA customers, AHP offers shipping coverage in the
lower 48 states for a limited time. Please call with receipt to verify
shipping coverage status. After the shipping coverage time ends, the
customer shall be responsible for all shipping and handling costs
both ways of non-functioning units for repair or replacement. Cus-
tomers located outside of the USA lower 48 states will have to pay
shipping and handling charges both ways from the purchase date. It
is the customer's responsibility to adequately insure the unit, as AHP
is not responsible for lost or damaged returns. Labor coverage only
applies if the unit is serviced at our facility or one of our authorized
dealers. We will not reimburse the labor if the customer decides to
have a third-party or unauthorized repair technicians work on the
unit. View full warranty, terms of sale and shipping details here:
https://ahpwelds.com/

10
Specications and Need-to-Know Information
alphaMIG 231ms
AlphaMIG 190MP Specifications
Input Voltage Welding Process Operating Range A/V OCV
120V (± 10%) DC MIG 30-125A, 15.5-20.25V 60V
120V (± 10%) DC Stick 10-100A, 20.4-24V 60V
240V (± 10%) DC MIG 30-230A, 15.5-25.5V 60V
240V (± 10%) DC Stick 20-160A, 20.4-27.2V 60V
Input/Output Operating Range
Duty Cycle Range
Input Voltage Process 50% 60% 100%
120V (± 10%) DC MIG 125A @ 20.25V 115A @ 19.75V 90A @ 18.5V
120V (± 10%) DC Stick 100A @ 24V 90A @ 23.6V 70A @ 22.8V
240V (± 10%) DC MIG 230A @ 25.5V 200A @ 24V 160A @ 22V
240V (± 10%) DC Stick 180A @ 27.2V 160A @ 26.4V 130A @ 25.2V
Input Demand Inrush / Rated Effective Current
Consult a local, licensed electrician before wiring your electrical connections.
Reference Article 630 of the NEC for correct welder wiring code information.
Voltage I1Max / I1Eff (Inrush/Rated)
120V 1Ph 50/60Hz 30/ 22A
240V 1Ph 50/60Hz 38/27A
Feature Range
Process DC MIG, and DC Stick
MIG Wire Speed 120V: 60-425 IPM/ 240V: 60-600 IPM (No load)
MIG Wire Feeder 4 roller system with .023-.045” (.6-1.2mm) V-groove roller
inc.
Wire Spool Diameter 8” and 12” (10-12 lbs and 30-44 lbs.)
Remote Function 2T/4T Switch Control Sequencer or Pedal Control
Pre/Post-Flow Auto/Off
Spot Timer Yes
Stitch Timer Yes
MIG Inductance Yes
Stick Hot Start Yes
Stick Arc Force Yes
Stick Electrodes E6013, E6010, E6011, E7014, E7018, 309L and others
Features
Weight / Dimensions / Other
65 lbs. / 18” H X 11.25” W X 26” L / Ingress Rating IP21S
Use between 14°F and 104°F
Store between –20°F and 120°F
.
NEMA 6-50P
This unit uses a NEMA 6-50P for 240V use. This is the standard
welder plug for 240V 1 phase use in North America.
This unit is supplied with a 240V to 120V pigtail adapter. No
internal adjustment or change is required to use it on 120V.
Simply install the adapter. The unit will adjust automatically.
IMPORTANT: Be responsible. Consult a local, licensed electrician
before wiring your electrical connections. Reference Article 630 of
the NEC for correct welder wiring code information. The code is dif-
ferent for wiring a welder circuit than for household circuits.
CAUTION: Use only with extension cords 50 feet long or
less, rated for 240V welder 50A use, or damage may re-
sult. For 120 operation, use only with 30A rated cords,
less than 25 feet in length.
NOTICE: Place the unit at least 6 feet away from the
weld area. The cooling fan is powerful enough to blow
the shielding gas off the weld. The fans do run con-
tinuously and are used to provide the high duty cycle
of the unit.

11
Specications and Need-to-Know Information
alphaMIG 231ms
Generator Operation Information
This unit may be used with any clean power rated 240V
generator with a 9500W Surge Watt rating. Clean Power is
defined as 5% or less Total Harmonic Distortion (THD).
This means the generator produces a clean sine wave simi-
lar to what is produced by power companies. If operating on a
120V generator, a 30A receptacle must be available and adapted for
use. Additionally 5% or less THD is still required. The generator must
not share “duties” with other tools or appliances.
NOTICE: Operation with generators not rated by the generator manu-
facturer as a “clean power” source is prohibited and will void the war-
ranty. Many manufacturers produce a version or series of their gener-
ators that produce clean power. This is usually stated up front. If
not, consult the manufacturer of the generators to confirm THD.
Clean power generators are made in both inverter types and conven-
tional types of generators. Do not assume all inverter type generators
produce clean power unless the manufacturer states it. Clean power
is needed for most electronic equipment to prevent damage.
Duty Cycle Performance
The MIG/Stick duty cycle of this machine has been established
at 50% while operating at the following Amperages. 120V:
MIG @ 125A, Stick @ 100A.
240V: MIG @ 230A, Stick @ 180A
Duty Cycle is the amount of time, out of a solid 10 minute block of
time that the unit may operate at the rated setting. For the example
of 50% @ 230A, this means the unit may be operated up to 5 minutes
continuously (or intermittently) out of 10 minutes of time before over-
heating. The balance of time remaining in the 10 minutes (5 minutes
in this example) should be spent letting the unit rest without welding
but while the unit is continuing to run and cool. As Amps are lowered,
or as the ambient temperature decreases below the 40 C testing
benchmark, duty cycle will increase.
It is not necessary to try to keep up with the duty cycle exactly by
timing it or recording it. The unit is equipped with a thermal sensor
which will trigger an interruption of operation if the temperature has
been exceeded. Keep in mind this is not a timed feature. A duty cycle
statement is based on time welding at a particular amperage, but
because so many variables exist, and ultimately the unit’s tempera-
ture is the regulating concern, duty cycle is determined by a preset
operating temperature threshold, rather than a timed one.
If you have triggered the duty cycle interrupt on this machine, allow
the unit to cool for a full 15 minutes. The unit should automatically
reset during this time, but allow a few more minutes so the machine
can cool sufficiently so as not to overheat quickly. If it does not reset
during this time, turn the machine off and back on to reset it.
Even though this unit is equipped with a duty cycle safety feature,
intentionally and repeatedly surpassing the duty cycle will shorten the
lifespan of the unit. Routine overheating damage will usually leave
signs that can be determined during warranty repair. Damage caused
by intentional abuse of the duty cycle will not be covered under war-
ranty.
If you find that you are constantly running into duty cycle issues, it is
likely you will need a bigger machine, or need to adjust your welding
strategies to comply with the duty cycle limits of this machine.
To assure maximum lifespan of the unit, never block the cooling vents
in the rear, sides, or front. Keep the unit 16” away, on all sides, from
any obstacle to free air flow such as a wall or partition.
Required Routine Maintenance
Most places where a welder is in operation, floating and
flying debris are factors that can lead to internal damage
and failure. Dust, dirt and sparks are often present in the
air. The machine will draw these contaminants in during op-
eration and they can be deposited inside the machine onto critical
components. These particles can conduct electricity and create new
circuit paths, not only causing poor operation, unit lock up, but it can
also cause long term damage. For this reason, the machine should be
opened up and cleaned with dry, compressed air on a regular basis,
once every month in heavy use, and ever 3 to 6 months under light
use. If the unit remains stored most of the time, dust still will accu-
mulate, and this should be done at least every 6 months. When not in
use, keep the machine covered. Failure to do so constitutes neglect
and may void the warranty.
To clean and service this welder:
1. Unplug the welder. Wait 10 minutes for the capacitors to dis-
charge. (To prevent electrical shock or electrocution.)
2. Put on a pair of safety glasses to prevent debris from blowing
into your eyes during this operation.
3. Remove the top handle.
4. Remove the steel cover screws.
5. Pull the cover up and to the rear while carefully watching for
wires that may catch on the louvered vents of the cover.
6. Check all wires and connections to make sure they are seated
and/or tight.
7. Use dry compressed air (or “canned” air) to blow the air off con-
nections, boards, and fittings. If the unit is particularly dirty,
unseat the affected connectors themselves, and blow out the
connections as well.
8. Reassemble the unit. Do not forget the handle!
NOTICE: Opening the unit to clean and check connections will not void
the warranty. In fact it is required to maintain your in-warranty status
during the duration of your warranty. However, under no circum-
stances should you attempt to modify or make unauthorized changes
to the welder or its programming. To do so will void the warranty.

12
Specications and Need-to-Know Information
alphaMIG 231ms
Shielding Gas Information
Before you connecting the shielding gas, please note that the
shielding gas connection is located on the rear of the unit. This
connection is a 5/8” CGA connection, which is the standard MIG
gas connection for North America.
REMEMBER: Always close the gas valve when turning off the welder
to prevent unwanted leakage and wasted gas. Shielding gas may fill a
room if leaks occur and can cause asphyxiation.
The regulator is a floating ball type. This means that when gas is
flowing the ball in the clear cylinder will float, indicating not only that
gas is actively flowing, but also the amount of gas flowing through
the regulator. This type is more accurate in general than the gauge
type, and is easier to read at a distance. When installing the regula-
tor and making it ready for use, be sure to snug all fittings using two
wrenches. One will hold the stationary fitting, the other will be used
to turn the rotating fitting. If you do not hold the stationary fitting,
either on the regulator, or on the back of the unit, you can crack or
damage the fitting. Once installed, and all fittings have been tight-
ened, test all fittings for leaks with a spray of warm soapy water (or
leak detector) to check for leaks. If bubbles are present, retighten.
Do not use thread sealant, locking compound, anti-seize or tape to
seal the threads. If the threads do not seal, remove and check the
connections for debris or pieces of metal on the sealing surfaces.
This unit can accommodate multiple gases for different applications.
However, when using 100% C02 you will need to purchase a different
type of regulator that is specific for CO2 shielding gas rather than the
regulator supplied with the welder that is designed for pure Argon
and Ar/CO2 mixes. However, the input connection at the rear of the
unit should remain the same.
When you open the cylinder valve, do so slowly and stand to the oppo-
site side of the cylinder. Do not stand directly in front or behind the
regulator, in case of damage to or malfunction of the regulator.
Open the cylinder slowly, but open the cylinder valve completely.
Cylinder valves may leak if they are not fully open or fully closed.
Gas flow rates will vary by process and cup/nozzle size Fpr MIG with
mixed Ar/CO2, gas flow rates typically range from 20 to 30 CFH, and
may need a minimum of 35 to 40 CFH for welding Aluminum. Of
course, the larger the nozzle, and greater the turbulence in the area,
greater gas flow rates may be needed. These is just general rules.
More or less gas may be used, depending upon the circumstances.
Use the information below to select the proper shielding gas.
• Steel: For Short Circuit Transfer use 75/25 Argon/CO2. (75%
Argon/25% CO2). For Axial Spray Transfer use 90/10 Argon/CO2
(90% Argon/10% CO2).
• Stainless: 98/2 Argon/CO2. or Tri-MIX. Tri-Mix has Helium as a
component and is very expensive. It is only used for short circuit
transfer welding of Stainless. 98/2 Argon/CO2 is a cheaper
alternative and can be used for Short Circuit or Spray Transfer.
98/2 Argon/O2 can be used, but it can be too hot for thin materi-
als and is good for Spray transfer only. Do not use pure Argon.
• Aluminum: 100% Argon. This is the only gas that is to be used
with Aluminum MIG on this welder. MIG aluminum welding
should welded with axial spray transfer and not short circuit
transfer. Short Circuit transfer will result in weak welds.
IMPORTANT: This unit is suitable for welding steel or stainless in
axial spray (a.k.a Spray Arc) transfer with .035” steel or stainless wire
for up to 3/8 to 1/2” in multiple passes. However, extended use will
overheat the standard gun. Contact AHP for larger gun options. How-
ever, since Aluminum sprays at a much lower threshold, and Axial
Spray is the recommended way of welding Aluminum with the MIG
process, this unit may be used for light spray arc use with welding
aluminum from .090” to 5/16”. Aluminum less than .090” should not
be welded.
Remember to select the proper gas for the type of welding you are
performing. Also double check the correct gas line is connected to
the correct fitting. This happens more often than you may realize!
GAS Connections

13
Specications and Need-to-Know Information
alphaMIG 231ms
Adjusting The Regulator
MIG flow rate requirements can vary by application and metal
type. However, the process of setup is the same. Keep in mind
this flow meter is only for 100% Argon and Argon/CO2 gas
mixes. It is not designed for 100% CO2. If used with 100% CO2,
source a regulator direct from your cylinder supplier.
• Switch the unit on. While holding the MIG trigger (or spool gun
trigger), start opening the the regulator valve by twisting the
regulator adjustment knob counter clockwise As you open the
valve, the floating ball will begin to rise. NOTICE: To avoid
spooling out and wasting wire during this time, release the ten-
sion on the drive wheels by flipping the tensioning lever to the
down position before you begin. This will release tension and
allow the drive rolls to safely turn without feeding any wire.
• For Steel and Stainless MIG, increase the gas flow rate to a be-
ginning point of 20-25 Cubic Feet Per Hour (indicated on the
clear gauge with the floating ball by CFH). If welding Alumi-
num, increase flow rate to 35 to 40 CFH. Read the middle of the
ball for the best reading. Do not confuse pressure on the cylin-
der gauge with the flow rate on the floating ball gauge. Pres-
sure present on the cylinder gauge does not mean gas is flow-
ing. However, a lack of pressure on the gauge may mean there
is no gas flowing.
• Once adjustment is completed release the trigger. The gas will
delay slightly until the post flow timer automatically shuts off
the gas flow. The ball will settle. If gas continues to flow after
the arc has stopped for more than a few seconds, the gas sole-
noid may have stuck. Contact AHP for maintenance (cleaning)
and repair solutions.
• When welding it may be necessary to increase or decrease gas
flow rate to compensate for conditions. If you are welding out-
doors or in drafty conditions, increase the flow rate until weld
porosity disappears. In extreme cases, you may need to set up a
tarp or plywood to serve as a wind-break. In mild conditions, if a
breeze is lightly blowing, you can position your body to block the
wind. Alternatively, you can choose to weld with flux-cored wire
or use the stick function to eliminate this problem.
• If you are concerned about wasting gas, or think gas consump-
tion is too high, you may turn down the gas. While testing on
scrap metal, turn the gas down incrementally until bubbles and
porosity just begin to appear. Once they appear, adjust the regu-
lator slightly so that they once again disappear. When bubbles
fully disappear, add another full CFH and you will have a proper-
ly adjusted regulator.
• When pressure on the cylinder drops below 500 psi, it is com-
mon to have to readjust the flow regulator to compensate for the
lower pressure. Pressures under 100 psi may create unstable
gas flow or exhibit contamination symptoms while welding. Keep
a full spare cylinder handy if working on weekend projects.
NOTICE: If you are planning on welding during holidays or during
weekends, always take notice of the cylinder pressure well before
hand. This will allow you time to get another cylinder before stores
close for the holidays or weekends. If possible, you may want to pur-
chase a 20CFH cylinder in addition to the regular gas cylinder that
you lease or purchase so that you have a backup cylinder in case of
an emergency. A 20CF cylinder will last an hour or two of intermit-
tent welding. An 80CF cylinder may last up to a day to a day and a
half of fabrication if being used intermittently. An 125CF cylinder
may last anywhere from a day to three days of fabrication. A large
300 to 330CF cylinder can last a week with regular fabrication use.
However, with production welding these time estimates given may be
cut anywhere by 1/2 to 2/3’s. All but the largest cylinders are typical-
ly available for purchase locally. Some companies limit maximum
purchase size cylinders to 80 CF, while others may allow up to 125CF.
Cylinders larger than 125 CF are seldom available for purchase. The
smaller cylinders are relatively inexpensive and can even be bought
“pre-loaded” with shielding gas and can also be refilled when empty.
WARNING! Don’t purchase large cylinders from private individuals
unless accompanied by a genuine original bill of sale from the gas
company. It is common for individuals to sell leased or rented cylin-
ders (knowingly or unknowingly). Gas supply companies may confis-
cate these cylinders if presented for refill if you cannot establish le-
gitimate ownership. They will also refuse to fill them if they are
owned by another gas supply company. Don’t buy a stolen cylinder.
Turning the adjustment knob counterclockwise (when viewed from
the top) increases flow rate. Turning the knob clockwise until it
seats will shut off gas flow at the regulator. Do not use the regu-
lator to shut off the gas flow. Shut off the gas flow at the cylinder
when the welder is not in use for more than 20 minutes.
Adjust the Regulator
Ball floats only when gas is flowing.

14
Specications and Need-to-Know Information
alphaMIG 231ms
Installing the MIG Gun
After inspecting the unit for power up, it is necessary to con-
firm wire feed operation. This is a simple process that requires
you to install the MIG gun on the unit. To install the MIG gun:
• Locate the 10 ft. 24 series MIG gun in the accessory box. Uncoil
the gun and straighten it out.
• Refer to the drawing below. Line up the Euro-Connector on the
end of the gun with the connector on the unit, making sure the
protruding pins are lining up with the corresponding hole.
• Once the pins are lined up, push the connector in until it is seat-
ed. Hand tighten the collar nut clockwise. Do not overtighten or
use tools or damage may occur.
• Once the nut is tight, gently shake the connector to confirm that
the gun is fully seated and the nut is still tight.
• After you install the MIG gun, set the wire speed knob to maxi-
mum. Open the MIG door so that you can see the drive feeder
mechanism. Set the wire feed control to the maximum setting.
Pull the trigger to check that the drive mechanism is turning. If
it does not turn, check the MIG gun connection once again. If
the drive wheel fails to rotate, contact technical support for fur-
ther assistance.
Selecting Polarity
Selecting the correct polarity for the welding Without the cor-
rect polarity, weld quality and weldability of a metal will be an
issue. Incorrect polarity can also cause undesirable operation of the
welder such as excess spatter, birds nesting of the wire, wire/
electrode sticking, excessive Tungsten/consumable wear, poor pene-
tration and even arc instability. See the following images to deter-
mine which polarity should be used with your process. Always double
check, especially after switching over processes that you have the
correct polarity. In MIG, if you forget to change the work clamp but
change the polarity under the cover, or vice versa, you will not even
get a spark. If something doesn’t seem right about the way the weld-
er is welding, or there is no arc at all, always check your gun/torch
polarity first. Then check your work clamp location and make sure it is
direct to the part being welded. If this has been checked and things
still don’t seem to weld well, consider replacing the work clamp. In-
spect it for burns, corrosion, missing copper strap, damaged hinge
joint. Stop and inspect the cable for tightness also.
MIG/ Flux-Cored Polarity
MIG and self-shielded Flux-Cored are similar processes. However
MIG uses a shielding gas, while self-shielded Flux-Cored wire inner
core provides the shielding without gas. Because of the difference in
the way solid MIG wire is formulated and the way self-shielded Flux-
Cored wire is formulated, the polarity required to weld is different.
For MIG, the torch will be used with the wire feeder connected to the
positive terminal under the cover and the work clamp will be located
in the negative terminal on the front panel of the machine. Drop open
the cover on the left side of the MIG to access the wire spool and
feeder. Just above the feeder, the are two terminal lugs. The lower is
positive, and the upper is negative. If there are no positive (+) or
negative (-) symbols, there may also be a label that says “Gas MIG”
and “Gasless” or something similar. Regardless, the lower terminal is
positive and the upper terminal is negative. For MIG, the wire feeder
cable should be connected to the lower positive (+) terminal via the
provided screw.
For Flux-Cored wire, the torch will be used with the wire feeder con-
nected to the negative terminal under the cover, and the work clamp
will be connected to the positive terminal. When welding most all
gasless flux-cored wires, polarity will be negative. There are a small
number of exceptions. However, if the manufacturer doesn’t state the
polarity, assume it is negative. Drop open the cover on the left side of
the MIG to access the wire spool and feeder. Just above the feeder,
the are two terminal lugs. The lower terminal is positive, and the
upper is negative. If there are no positive (+) or negative (-) symbols,
there may also be a label that says “Gas MIG” and “Gasless” or some-
thing similar. Connect the wire feeder cable to the upper terminal
lug via the provided screw.
IMPORTANT! Remove MIG Gun while using Stick process. The
MIG Gun will remain live if connected. If it comes into contact
with metal, the MIG Gun may short out, and may cause damage
to the unit. Personal injury may also occur.
Rotate nut clockwise (hand tight).
MIG Gun Connector

15
See the illustrations below for proper polarity for MIG and Flux-Cored setup.
NOTICE: MIG is particularly susceptible to issues with poor work
clamp connections. Improper connection can lead to arc outages, and
spatter. When connecting the work clamp, always be sure that you
have it connected directly to the part being welded. Connecting to the
table, through a vice or fixture may cause arc instability and even loss
of weld power through resistance. If you are not able to connect
directly to the part being welded, consider using a jumper wire, or at
least connect as close as possible and grind a clean connection point
where the work clamp will be. This will help achieve the best weld and
offer the best transfer of power to the weld puddle. Don’t forget to
swap from electrode negative back to electrode positive when switch-
ing from Flux-Cored to MIG or to Stick or vice versa. If the unit acts
as if there is no output check that both positive and negative connec-
tions have been changed under the panel and at the front terminals.
MIG Wire Installation and Tension
The spool carrier assembly consists of several parts. Each part must
be assembled correctly. See the illustration on the next page. The
carrier supports both 8” and 12” diameter spools of wire. For 8” use,
the unit should be used with the adapter. Some brands of wire
spools may not fit flush on the spool holder assembly. This is because
the locating hole on the spool is too shallow. The spool hole may be
drilled out or the locating pin on the inside collar may be trimmed if
needed. the locating pin on the collar until it fits flush. NOTICE: The
wire spool must be installed so that the wire unwraps and feeds into
the feeder from the bottom of the spool and the spool turns counter-
Specications and Need-to-Know Information
alphaMIG 231ms
Work Clamp
Work
Torch
Under Cover Connection
MIG/MAG
DINSE 35/50mm2 Adapter
Euro-Quick Connector
Work Clamp
Flux-Cored
Work
DINSE 35/50
Torch
Euro-Quick Connector

16
clockwise.. It should never be installed so the wire comes over the
top. When installed properly, the spool will turn counter clockwise.
See the above illustration for proper rotation Small diameter wire
such as .023” wire is not recommended unless a smaller (blue) liner
is installed into the standard MIG gun. Gun length for .023” and.
.030” wire should not exceed 10 ft. 4” diameter spools of wire cannot
be fed directly from the machine however. If you wish to feed 4”
rolls or if you want maximum distance feeding, the spool gun option
is best solution. For welding Aluminum the unit can weld with .035”
or .045” Aluminum wire direct from the unit and standard gun (10 ft)
as long as the optional polymer liner and U-groove drive rolls are
installed. Of course, the optional AHP spool gun may also be used.
However, with .030” wire, the maximum wire feed speed will be barely
enough to keep up with the melting rate of the wire and many “burn
back” to the tip events will occur. Larger wire requires a slower wire
feed speed to deliver the same Amperage. This is why .035” and .045”
wire is recommended while welding Aluminum. Minimum weld thick-
ness for Aluminum is usually considered between 11 gauge and 1/8”
due to the spray arc nature of it. The AHP 200A Spool gun is calibrat-
ed and best synchronized for this unit. Gently guide the wire from the
spool over through the wire feeder and into the front section of the
gun at least 6 inches. Make sure the wire lays neatly in the groove.
Hold it with your finger if necessary as you lower the top drive roll
down and raise the tensioning lever with your other hand. When com-
plete the wire should look like the illustration on the previous page.
Hint: The wire on the spool is usually bent and threaded through a
small hole in the side of the spool to lock it in place and prevent de-
spooling of the wire. Keep one hand on the wire spool to prevent de-
spooling and cut the wire loose with a pair of wire cutters. Trim the
wire to make sure the end of the wire is straight and able to be
threaded through the wire feeder mechanism and gun.
After the tensioner is raised back to the vertical position, confirm the
wire is still in the groove and is not riding up on the shoulders of the
drive roll.
Be sure to turn the welder on. Then, remove the gas nozzle and un-
screw the contact tip as shown in the illustration below.
Hold the gun cable and gun straight as possible. Press and hold the
cold feed wire button on the panel. The wire should slowly begin to
feed through the gun cable and eventually through the gun. As the
wire exits the gun, allow 3 to 4 extra inches of wire to be fed out past
the diffusor. Re-install the contact tip over the wire and screw it in
clockwise until it is tight. Be careful not to strip the threads. Install
the gas nozzle. Trim the wire before welding. See the illustration
below.
The unit comes with and .035” and .045” drive rolls installed. NO-
TICE: For most purposes you will likely want to use .035” wire in this
unit since it covers the greatest range of metal thicknesses and am-
perages within the capability of this unit. However, if you change
wire size or type, you will need to change the drive roll to the correct
size and type. There are extra sizes and types in the bag for the con-
sumables.
This unit uses four drive rolls to feed the wire. The top drive rolls are
actually driven smooth rollers that serve to hold tension and keep the
wire in the groove. These are not changeable. Only the bottom drive
roll needs to be changed. On each bottom drive roll there are two
small grooves that are sized for .035”and .045” wire. If you need
other sizes, remember that additional sizes and types of drive rolls
are included in the packaging. The standard installed drive roll is
meant to feed hard (solid) steel wire. The groove on this drive roll
has a “V” shape designed for the solid wire. You will also find Flux-
Specications and Need-to-Know Information
alphaMIG 190MP
Feeding the Wire
Wire
Tensioner
Upper drive roll arm
Consumable Assembly
M6
Contact Tip Diffusor
Gas Nozzle Contact Tip
Holder
Gun Neck
Trim wire to 1/4”-3/8”
(6mm– 9mm)
Trimming Wire

17
Cored drive rolls in the packaging that have a serrated edge to the
groove, which grips the softer, cored wire. Viewing a flux-core drive
roll from the top, you will see a “zipper” like pattern. This should
never be used to feed hard steel or stainless wire or aluminum wire.
This will result in damage to the wire, metal flaking and possible
plugging of the MIG gun liner. To determine the exact size of wire
and type you have, look at the side of the drive roll. The size of the
drive roll groove is stamped on the side of the drive roll closest to the
corresponding groove. The type of the drive roll will also be stamped
with a V if it is for solid hard wire. If it is stamped with a “U”, this is a
special drive roll for feeding aluminum wire. Aluminum wire is best
fed with a spool gun.
The drive roll has a safety cover held in place by a slotted screw. Re-
move this cover to access the drive rolls. Also, the drive rolls are held
in place on the shaft by slotted screws. Use a flat head screw driver
to remove the screws on the cover and drive roll shafts. Eash drive
roll is mounted on an inner bushing that slides over the shaft. The
bushing should be held in place with one finger of one hand while the
other hand removes the drive roll. This will prevent both bushing and
drive roll from being removed from the wire feeder drive shaft. When
removing make sure that the square locating key is not dismounted.
If the key falls out, replace it before replacing the drive roll. The
drive roll size is located on the same side that the groove is closest
to. So install the drive roll with the size desired facing in. This may
be different from your experience with other brands. Always remem-
ber to check for correct sizing before welding or slippage may occur.
Reassemble the drive rolls in reverse order. The screws have knurl-
ing on the outer edge for grip so use only finger-tight pressure to
tighten the drive rolls. Do not reassemble the drive rolls with the
screwdriver. Overtightening the drive rolls with the screw driver may
strip the screws.
CAUTION: The drive rolls create a pinch point. When reassembling,
you must reinstall the safety cover or personal injury or unit damage
may occur. Do not leave this off during reassembly.
To feed the wire properly, the wire must be tensioned properly before
you begin welding. The tensioning lever has numbers on the dial. To
increase tension, rotate the tension lever clock-wise. Different types
of wires require different tensions. There is no exact tension that
works for all wire types. However, for steel wire, you will generally
tension to at least 3 or 4 on the dial. For flux-cored wire, it may only
require a setting of two or three. Wire diameter also plays a small
part in the amount of required tension that is needed. Regardless of
the wire type or wire diameter, follow the process below and refer to
the following illustration. Turn the unit on and pull the trigger so that
the wire extends approximately 1” beyond the gas nozzle.
• Find a small block of wood, such as a two by four, and secure it
to the welding table or other solid object. Do not test this on
metal!
• Hold the gun approximately 2 inches off the wood. Aim the gun
at the block of wood so that the nozzle is at a 30 degree angle to
the wood.
• Pull the trigger and allow the wire to contact the block.
• Increase wire tension so that the wire contacts the block of wood
and is forced to curl up. Continue holding the trigger so that two
or three full spirals are made.
• If the wire stops, or stutters during this process, let go of the
trigger immediately and increase tension.
• Adjust the wire until the stuttering or jerking disappears.
• Do not over-tighten the tensioner or use more tension than nec-
essary. When the wire begins to curl without any stoppage, the
tension is enough.
Specications and Need-to-Know Information
alphaMIG 231ms
.6mm =.023”/.025”
.8mm= .030”
.9mm= .035”
1.2mm= .045” (3/64”)
Size/Type Stamping.
(The size is stamped on
same side as correspond-
ing groove.)
Drive Roll Selection
3
4
Wood Block
Curl

18
Spool Gun Installation.
When connecting the optional AHP spool gun to weld Aluminum or
other small 4” diameter spools, selecting the correct polarity is im-
portant both on the lower panel and under cover. The Spool gun picks
up it’s welding power from the Euro-Quick connector as it welds. It
does not come through the control cable.
When using the optional AHP spool gun the wire speed control is
located on the side of the gun handle. This allows you to control wire
speed without having to return to the unit to readjust. However, Volt-
age will still need to be set correctly on the main panel for proper
operation. The main panel will still be used to set the maximum wire
feed speed, but the gun will control the wire speed within the range
from Minimum speed the unit is capable of up to the maximum wire
feed speed you have set on the panel.
Specications and Need-to-Know Information
alphaMIG 231ms
Work Clamp
The spool gun connection process is similar to the MIG torch connection
and uses the same Euro Quick Connect connection. Polarity configuration is
the same as MIG except when Flux-Cored wire is being used. If Flux-Cored
wire is being used, then use the standard Flux-Cored polarity.
Spool Gun
Work
Euro-Quick Connector
Spool Gun
Control Connector
DINSE 35/50 mm2
Adapter
Under Cover Connection

19
Specications and Need-to-Know Information
alphaMIG 231ms
Stick Polarity and Electrode Types
Stick welding is usually performed in DC with the electrode positive
(DCEP+), or “ Reverse Polarity”. Some electrodes may be used in
either polarity. For example, the E6011 may be operated either in
DCEP, DCEN. Some people mistake it for an AC only rod, because of
its ability to be used with old style transformer “buzz box” welders
that only produce AC current, but in reality it will operate just as well,
if not better on DCEP. In most cases, even if a welding rod allows
operation with DCEN,it will typically perform better in DCEP. a very
rare occurrence. The illustration on the next page depicts the stand-
ard connection for most welding rods. Always consult your welding
rod manufacturer’s recommendation as an ultimate source of infor-
mation. Usually the box or can will have polarity and Amp range
recommendations on it if you are in doubt about settings or polarity.
This welder is designed to weld with a variety of welding rods, includ-
ing E6010, E6011, E7014, E6013, E7018, E7024, and even stainless
rods like E309L. When welding with E6010 and other rods with a
Cellulose based flux such as E6011 it is best to keep the arc held
closely. Exaggerated “whip and pause” technique may result in arc
outage. For general purpose fabrication, and practical use, consider
using E7014. This is considered a “fabrication rod”. With these rods,
high-quality, rapid, self-releasing welds can be made. E7014 rods
are particularly easy to use, and leave a smooth, high quality appear-
ance, even in the hands of novice users and don’t require special
storage or hot boxes that E7018 does. The E7014 can be easily drug
along the work piece while maintaining an arc. The slag is medium
heavy and will self release if the amp range and technique is correct.
However for structural and code work E7018 may be required, as will
a hot box or rod oven.
IMPORTANT: Whenever welding, this unit performs best with a short
arc distance. Long arc lengths will create arc outages. A light drag
works best.
This welder has a maximum output of 180 Amps while operating on
240V. This is sufficient to weld with most welding rods up to 5/32”.
Running larger rods may be difficult and may make the duty cycle
interrupt or over current interrupt engage. When operating on 120V,
use a 3/32” or smaller welding rod. Operation at higher than 85A
while on 120V may trip a 20A circuit breaker,
NOTICE: This welder utilizes a slow run-in feature which feeds the
wire at a reduced rate until the arc is started. This is designed to
improve arc starting and reduce stuttering when the arc is in the
process of being initiated. This means the you cannot directly meas-
ure or calibrate the wire feed speed unless special machinery is used
such as a load bank and a R.P.M meter. This is done for you at the
factory and can only be recalibrated in an authorized AHP service
center. If you suspect the wire feed speed is not feeding within speci-
fications, contact AHP. When welding, the unit stops reading a static
WFS and voltage value and reads actual voltage and amperage output
IMPORTANT! Remove MIG Gun while using it in the Stick mode.
Gun will remain live if connected. If it comes into contact with
metal, the MIG Gun may short out, and may cause damage to
the unit. Personal injury may also occur.
Electrode
Work Clamp
Work
DINSE 35/50
DINSE 35/50
Adapter
Electrode Holder

20
Specications and Need-to-Know Information
alphaMIG 231ms
1
5 6
#Component Identification Component Note
1. Operator Panel Interface See Operator Panel Page for detailed information
2. Door and Latch Keep door closed while in use. Only open for wire replacement and starting.
3. MIG and Spool Gun Euro Style Connector The MIG gun and spool gun connect to this same fitting. The MIG gun must be removed
to connect the spool gun. Both cannot connect at the same time.
4. Positive Terminal (+)
(DINSE 35 Type, 1/2” approximate dia.)
For MIG (GMAW): This is the location of the wire feeder lead ( terminal under the cover)
For Gasless (self-shielded) Flux-Cored (FCAW): This is the location of the work clamp.
For Stick: This is the location of the electrode holder (torch).
5. 7 Pin Control Connector This connector is the control connector for the Spool Gun. Do not leave connected with
when the Main Gun is connected or when the Stick processes is selected.
6. Negative Terminal (-)
(DINSE 35 Type, 1/2” approximate dia.)
For MIG (GMAW): This is the location of the work clamp.
For Gasless (self-shielded) Flux-Cored (FCAW): This is the location of the wire feeder lead
(terminal under the cover).
For Stick: This is the location of the work clamp.
7. Handle
7
Front Panel View
2
4
3