HTP Pro Pulse 220 MTS User manual

Pro Pulse™ 220 MTS
Owner’s Manual
180 Joey Drive
Elk Grove Village, IL 60007-1304
Ph: [phone] · Fax: [phone]
Web: www.usaweld.com

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Foreword
Thank you for purchasing an HTP® Pro Pulse™ 220 MTS—our advanced, multi-process, full synergic, pulse MIG
welder. The Pro Pulse 220 MTS produces high quality, virtually spatter free welds on all common metals when you
use the correct gas and consumables for your welding application. By following the instructions closely, you can
achieve success when welding with the Pro Pulse 220 MTS, even when welding aluminum where the margin of error
is very small (when welding aluminum, almost everything must work out just right in order to achieve good results;
without everything working out just right, failure is likely). This does not mean that a novice welder will not be able
to perform aluminum welds successfully with the Pro Pulse 220 MTS. No matter your skill level, your chances of
success dramatically increase with the more knowledge you have about the welding process you plan to perform and
the operation of the Pro Pulse 220 MTS. HTP provides this manual and a few videos to familiarize you with, and help
you weld successfully with, the Pro Pulse 220 MTS.
Customers interested in the Pro Pulse 220 MTS often ask us the following questions: If I buy the Pro Pulse 220 MTS,
will I be able to weld aluminum right out of the box? and Why do some customers find welding with the Pro Pulse
220 MTS difficult? Why do some customers, including customers with decades of regular MIG welding experience,
struggle when welding with the Pro Pulse 220 MTS, even after reading the entire manual twice and watching several
videos? First, the majority of our customers successfully weld aluminum with the Pro Pulse 220 MTS within hours,
not days. Second, experienced welders struggle when welding with the Pro Pulse 220 MTS for multiple reasons,
including the following:
 Muscle Memory. Operators who typically MIG weld steel are accustomed to the frying bacon sound the machine
makes when welding, as well as accustomed to holding the gun close to the work piece. Operators may be thrown
off by the sound the Pro Pulse 220 MTS makes when welding, and muscle memory causes the operator to keep
the gun too close to the work piece when welding aluminum, which requires a ¾” to 1” stick-out.
 Old Habits and Frugalness. For aluminum welding (all spray arc transfer and pulse), your gas flow rate must be
significantly higher than for classic MIG welding (steel). Flow rates, in fact, must be set upwards of 35 CFH and
as high as 50 CFH. We also see operators running economy Asian import wire or random wound wire. For
aluminum welding, where everything must be just right, a bad roll of wire can make a bad day in aluminum
welding. We recommend using HTP brand wire (made in North America) or Alcotec brand wire (made in the
U.S.A.). We found that the HTP and Alcotec brand wires work best with the Pro Pulse 220 MTS.
 Unrealistic Expectations. No matter what, MIG welds will never look identical to TIG welds. Although, with
double pulse and when the settings on your machine and the movement of your hand are in perfect harmony, they
can come pretty close.
Also, when everything works right, welding aluminum is a lot like welding steel, though there are a few
differences—from the gas, to the torch, to the consumables, to consumable use. When welding aluminum, even a
skilled welder may go through a few contact tips before finishing a roll of wire; unlike when welding steel, where
some operators can weld an entire 12” spool of wire, or more, through one tip. Aluminum, due to the nature of
aluminum, requires more contact tips. As a novice welder, you may go through five to ten contact tips in the first
few hours or first day.
Birds nesting is not an issue with the Pro Pulse 220 MTS. However, burn back may occur and must be addressed
immediately—failure to do so will result in EXCESSIVE tip usage! When burn back occurs, the damaged tip
becomes useless and must be replaced. Furthermore, run about 10’ of wire through your MIG gun to discard any
wire damaged by slipping in the drive roll (which occurs due to burn back into the contact tip).
Material Thickness Rating Displayed in the Machine. We designed this feature to give you an idea about settings
(wire speed and voltage). The ratings displayed, generally speaking, are designed for straight line, push or pull
(depending on the application) welds, made at a rather fast travel speed (to reduce heat input into and distortion
of the material you are welding on) and without any gun manipulation (no weaving, swirly motion, etc.).
However, depending on the joint configuration (butt, lap, or t-joint) and on the welding position (flat, horizontal,
vertical up or down, and overhead), you need to adjust the synergic setting accordingly.
Now, with a better understanding of what you will experience when welding with the Pro Pulse 220 MTS, enjoy
finding out all of the details by reading the rest of the manual and watching the videos.

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Manufacturer’s Warranty
It is expressly agreed that there are no warranties, expressed or implied, made by either the Salesman, Dealer, or HTP
America, Inc. on products or parts furnished hereunder, except the Manufacturer’s Warranty against defective
materials or workmanship as follows:
HTP America, Inc. warrants each new welding machine to be free from defects in material and workmanship under
normal use and service for Three (3) Years after delivery to the original purchaser. HTP America, Inc. will repair and
replace, at its factory, any part or parts thereof. Products should be returned to HTP America, Inc., with transportation
charges prepaid, and which its examination shall disclose to its satisfaction to have been thus defective. This warranty
being in lieu of all other warranties, expressed or implied, and all other obligations or liabilities on its part and it
neither assumes nor authorizes any person to assume for it any liability in connection with the sale of its machines.
This warranty shall not apply to any welding machine which has been repaired or altered by unauthorized service
departments in any way so as, in the judgment of HTP America, Inc., to affect its stability and reliability, nor which
has been subjected to misuse, negligence, or accident.
HTP America, Inc. shall not be liable in any event, unless HTP America, Inc. receives notice of alleged breach of
warranty, actual or constructed, specifying the claimed defect within not more than Thirty (30) Days after discovery.
HTP America, Inc. has reserved the right to make changes in design or add any improvements to its products, at any
time, without incurring any obligation to install the same on equipment.
This warranty is void unless warranty card is sent to HTP America, Inc. within Fifteen (15) Business Days from the
date of purchase.
Exclusions to Warranty:
1. The MIG Welding Gun is warranted for a period of Ninety (90) Days against defects in material and
workmanship.
2. The contact tips, tip holders, gas diffusers, gas nozzles, and liner are consumable items, WHICH CARRY NO
WARRANTY.
Note: This warr anty is to the original purchaser only. The war r anty can be tr ansferr ed to another owner, with
HTP’s approval, for a warranty transfer fee. HTP America, Inc. must be notified within fourteen (14) days of the sale
and must be provided with the contact information of the original owner, the contact information of the new owner,
and the serial number of the machine.
Safety Suggestions
It is forbidden for people with PACEMAKERS to use or come near the machine.
Electric arc welding produces ultra-violet rays, which are harmful to skin and eyes. Ultra-violet radiation can
penetrate lightweight clothing, reflect from light-colored surfaces, and burn the skin and eyes.
 Wear a heavy, pocket-less, long-sleeved shirt, cuff-less trousers, and high-topped work shoes.
 Wear a full-faced welding helmet with a number ten or darker lens and a cap.
Electric arc welding produces flying sparks and hot material, which can cause fire.
 To avoid fire, do not weld on wood, plastic tile, or carpeted floors. Concrete or masonry floors are safest.
 Do not weld on pressurized containers.
 Do not weld on drums, barrels, tanks, or other containers until they have been cleared and cleaned as described in
AWS Standard A6.01.
 Do not wear flammable materials.
 Wear non-oily/non-greasy, flameproof welding gloves; the oil or grease on the gloves may ignite.
 Avoid having any type of fuel, such as cigarette lighters or matches, on your person as you weld.
 Ensure that there is a fire extinguisher in the welding area.

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Noise can damage your hearing. Protect yourself suitably to avoid hear ing damage.
The welding arc can cause burns. Keep the tip of the welding gun/tor ch far from your body and from other
persons.
Electric arc welding produces toxic fumes.
 Provide adequate ventilation in the welding area at all times.
 Do not weld on galvanized zinc, cadmium, or lead beryllium materials unless you are POSITIVE that sufficient
ventilation is provided. These materials produce toxic fumes.
 Do not weld in areas close to degreasing or spraying operations. Chlorinated hydrocarbon vapors may react with
the ultra-violet rays and form highly toxic phosphate gas.
 If you develop momentary eye, nose, or throat irritation during welding, stop welding immediately. This is an
indication that ventilation is not adequate. Do not continue to weld until ventilation is improved.
ELECTRIC SHOCK CAN KILL.
Exposed, electrically hot conductors, other bare metal in the welding circuit, or ungrounded, electrically hot
equipment can fatally shock a person whose body becomes a conductor. Do not stand, sit, lie, lean on, or touch a wet
surface when welding.
 Disconnect the power supply before working on the welding machine.
 Do not work with deteriorated or damaged cables.
 Frequently inspect cables for wear, cracks, and damage. Replace those with excessively worn insulation to avoid
a possible lethal shock from bared cable.
 Do not touch bare electrical parts.
 Ensure that all of the panels covering the welding machine are firmly secured in place when the machine is
connected to the power supply.
 Insulate yourself from the workbench and from the floor (ground); use insulating footwear and gloves.
 Keep gloves, footwear, clothes, the work area, and the welding equipment clean and dry.
 Check the machine power cable frequently; the power cable must be free from damage to the insulation. BARE
CABLES ARE DANGEROUS. Do not use the machine if the power cable is damaged; a damaged power cable
must be replaced immediately.
 If it is necessary to open the machine, first disconnect the power supply. Wait Five (5) Minutes to allow the
capacitors to discharge. Failure to take this precaution may expose you to the dangerous risk of electric shock.
For more information, refer to the following standards and comply as applicable.
 ANSI Standard Z49.1 SAFETY IN WELDING AND CUTTING, obtainable from the American National
Standards Institute, 1430 Broadway, New York, NY 10018.
 ANSI Standard Z87.1 SAFE PRACTICE FOR OCCUPATIONAL AND EDUCATIONAL EYE AND FACE
PROTECTION, obtainable from the American National Standards Institute, 1430 Broadway, New York, NY
10018.
 AWS Standard A6.0 WELDING AND CUTTING CONTAINERS WHICH HAVE HELD COMBUSTIBLES,
obtainable from the American Welding Society, 2051 NW 7th St., Miami, FL 33125.
 NFPA Standard 51 OXYGEN-FUEL GAS SYSTEMS FOR WELDING AND CUTTING, obtainable from the
National Fire Protection Association, 470 Atlantic Ave., Boston, MA 02210.
 NFPA Standard 51B CUTTING AND WELDING PROCESSES, obtainable from the National Fire Protection
Association, 470 Atlantic Ave., Boston, MA 02210.
 CGA Pamphlet P-1 SAFE HANDLING OF COMPRESSED GASES IN CYLINDERS, obtainable from the
Compressed Gas Association, 500 Fifth Ave., New York, NY 10036.
 OSHA Standard 29 CFR, Part 1910, Subpart Q WELDING, CUTTING, AND BRAZING.

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Fig. 1

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Pro Pulse 220 MTS Specifications
Maximum Output Amperage 200 (220 for 10 seconds)
Minimum Output Amperage MIG: 12
TIG & Stick: 4
Maximum Recommended Thickness
*Single pass capacity varies depending on the material
being welded and the setting of the machine.
1/4” to 3/8”
Duty-Cycle
35% @ 200A @ 77º F
100% @ 140A @ 77º F
25% @ 200A @ 104º F
60% @ 140A @ 104º F
100% @ 120A @ 104º F
Open Circuit Voltage 75
Electronic Overload Protection Yes
Cooling (On-demand, electric fan, variable speed) Air
Wire Spool Capacity
*Up to a 44 Lb. weight capacity; 8” spools recommended
for Double Pulse aluminum welding.
8” & 12”
Wire Diameter
*Depends on the material being welded (not all wire can
be welded in all sizes.
.023” to .045”
Input Voltage 208 to 240v
Input Amperage MIG: 35
TIG & Stick: 40
Frequency 50/60 Hz
Wire Feed Rate (In./Min.) 55 to 630
Size (Length x Width x Height) 19-3/4” x 10” x 14-1/2”
Weight
*Without wire and cables. 42 Lbs.

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Electrical Connection
Your Pro Pulse 220 MTS operates on single-phase, 230 volt power (208-240 volt). The machine draws 35 amps out
of the wall when operating at a MIG or TIG welding output of 200 amps. 200 amps of Stick welding output requires
40 amps of 230 volt input. If you operate the machine on a generator, it needs to be a clean power generator with a
minimum of 8500 watts (8500 watts must be the continuous rating or running watts rating of the generator, NOT the
peak rating or starting watts rating of the generator) for MIG or TIG operation. Stick operation requires a 10,000 watt
generator. If you operate the machine in MIG or TIG on an extension cord, the wire size of the cord needs to be at
least 10AWG and should not exceed a length of 100’.
General Characteristics
Our new pulsed multi-process MIG welding machine, which features electronic adjustments controlled through a
microprocessor, allows you to achieve excellent welding quality, thanks to the advanced technologies applied. The
microprocessor circuit controls optimize the transfer of the arc, irrespective of the load variation and of the
impedance of the welding cables.
This machine is a synergic welding machine.
The key feature of a synergic welding machine is the ease of set up. In the past, you needed charts from wire
manufacturers to determine wire speed and voltage, as well as CTWD (contact tip to work distance) of different
welding applications, which ultimately determined the arc length and also indicated which shielding gas to use. With
the Pro Pulse 220 MTS, this information is preprogrammed, readily available, and displayed to you. The Pro Pulse
220 MTS features an LCD that allows you to select a synergic program for a specific wire, such as steel, aluminum,
stainless steel, silicon bronze, etc. Once you select a program, the machine tells you which gas to use and then allows
you to select the thickness of the material being welded. After selecting the synergic program and the material
thickness, the machine automatically sets the correct wire feed speed (in inches per minute, or IPM) and the matching
voltage to achieve the best welding results. Of course, since you will encounter atypical situations, especially during
repairs on used or dirty material, the Pro Pulse 220 MTS gives you the option to adjust the weld either colder or
hotter by reducing or increasing the voltage.
The Pro Pulse 220 MTS also offers an ST-arc function. The ST-arc function reads welding parameters back to the
welding machine live (while welding). The function monitors the arc length and keeps the arc length constant, while
allowing the stick-out (CTWD) to vary. ST-arc, essentially, allows the new welder to focus on the location of the
weld, as well as the travel speed, and also allows the experienced welder to keep a perfectly uniform weld bead and
uniform heat input, which enables the welder to achieve good welds in tight corners—a feat that couldn’t be reached
previously with conventional welding equipment.
What is pulsed process MIG welding?
Pulsed process welding is a form of welding that happens in spray arc transfer, while classic MIG welding is done in
short arc transfer and sounds somewhat like frying bacon. Spray arc welding is a lot hotter, has excellent penetration,
and is typically very quiet (mostly a quiet hissing with an occasional crackle). This form of welding is so hot that it
typically can only be used in flat position, though sometimes in horizontal position, as well. Pulse gives you the
option to run the process out of position while retaining the same desirable characteristics of deep penetration—a
virtually spatter-free weld with excellent bead appearance—but does so while enabling you to join materials of
different thicknesses at increased travel speed, all while lowering the heat input and distortion.
Pulsed process MIG welding is different than pulsed TIG welding. In the MIG process, filler material has to be added
constantly to maintain the welding arc, and this sets the ground rules for the pulse function. When pulsing with TIG,
you have the ability to adjust peak current, background current, pulse-on time, and pulse frequency. When using
pulsed process MIG, on the other hand, you typically only have the choice of pulse-on or pulse-off. However, the Pro
Pulse 220 MTS offers peak pulse (in some programs, under certain conditions, and up to 300 amps), pulse-on time, as
well as background current—all preprogrammed, according to scientific studies for best results, at the factory. The
pulse frequency adjusts with the wire speed; slower wire speeds have a lower frequency, while higher wire speeds
have a higher frequency.
Because of the pulse frequency, electronic interferences may occur. For this reason, it is forbidden for people with
PACEMAKERS to use or come near the machine. Dur ing the r esear ch and development process at HTP, we

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found that some brands/models of auto-darkening welding helmets experience interference issues with the Pro Pulse
220 MTS. Since the frequency changes according to wire speed, we noticed that a wire speed adjustment of +/-20
IPM typically alleviates the issues. We also noticed that video cameras or security cameras within close proximity to
the Pro Pulse 220 MTS, when welding in a pulse program, show the interference in the recorded picture.
Although the spray arc itself is almost silent (just a slight hiss), the sound of the pulse is well noticeable. It sounds, at
times, much like an AC TIG welder. If you are used to the classic MIG frying bacon sound, the sounds the Pro Pulse
220 MTS makes will take a little adjustment time to get used to.
Welding guns compatible with the Pro Pulse 220 MTS include:
HTP 15 Series MIG Welding Gun
HTP 24 Series MIG Welding Gun
HTP 26 Series MIG Welding Gun
HTP RSG 250 PP220 Air-Cooled Spool Gun
HTP PPAC 6M 0.9 Air-Cooled Push/Pull Gun
Below, we discuss the capabilities and limitations of each of these guns.
HTP 15 Series MIG Welding Gun—The smallest of the guns. Excellent for reaching into tight spaces (e.g., work on
cars). Also, lightweight for less operator fatigue. Best for use on steel (non-pulse). Not suitable for pulse welding
steel, and limited potential for pulse welding silicon bronze in the collision repair industry. Although we also sell the
gun in 12’ and 15’ lengths, only the 10’ gun may be used when welding .023” diameter wire, and even larger
diameter wires will most likely NOT give you a trouble-free welding experience. We, therefore, recommend using
only a maximum gun length of 10’. If you require a longer gun, either upgrade to a push/pull system or to the Pro
Pulse 300, which features a different wire feed system.
HTP 24 Series MIG Welding Gun—Slightly larger than the 15 Series MIG Welding Gun. Still lightweight and fits
into most small spaces. For pulse welding, we recommend a maximum gun length of 10’. Although we also sell the
gun in 12’ and 15’ lengths, only the 10’ gun may be used when welding .023” diameter wire, and even larger
diameter wires will most likely NOT give you a trouble-free welding experience. We, therefore, recommend using
only a maximum gun length of 10’. If you require a longer gun, either upgrade to a push/pull system or to the Pro
Pulse 300, which features a different wire feed system. For any kind of pulse welding, long-life tips should be used.
Failure to do so will result in premature tip wear, poor weld quality, burn backs, birds nesting, and other problems.
The 24 Series MIG Welding Gun can be used for:
 Steel (all diameters and thicknesses; both pulse and non-pulse)
 Flux-cored (all thicknesses; with or without gas)
 Stainless Steel and Silicon Bronze (all thicknesses)
HTP 26 Series MIG Welding Gun—Noticeably larger than the 24 Series MIG Welding Gun with a thicker torch
cable (the thicker torch cable helps the operator keep the gun straight, which is especially important when welding
aluminum). Comes in an 8’ length with M8 size long-life contact tips. The 26 Series MIG Welding Gun can be used
for:
 Aluminum (EVERY wire diameter from .030” to .047” (3/64”); EVERY alloy (4043, 5356, and 5554 namely))
The 26 Series MIG welding gun might also be used for:
 Steel (all diameters and thicknesses; both pulse and non-pulse)
 Flux-cored (all thicknesses; with and without gas)
 Stainless Steel and Silicon Bronze (all thicknesses)
In doing so, modifications to the gun must be made (a different liner must be installed), which essentially renders the
gun useless for aluminum. However, a modification like this may be a good choice if you require an extra heavy-duty
welding gun for high heat situations and if the 24 Series MIG welding gun does not provided sufficient performance.

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HTP RSG 250 PP220 Air-Cooled Spool Gun—If you need some extra distance between yourself and your welding
machine (beyond the reach of the 8’ aluminum gun), or if you cannot avoid flexibility and tight turns of the
connecting cable, a spool gun might just be the right tool for the job. In the past, welders considered spool guns more
a crutch than an actual tool made for professionals. Why? Because, in the past, you could only adjust the wire feed
speed on the spool gun and not the voltage. A voltage adjustment required you to stop welding, climb out and off of
the tank, climb out or off of the trailer, crawl out from under the truck (essentially leave whatever you were welding
on), walk back to the welding machine, adjust your voltage, walk back to what you were welding on, climb back in
place, and resume welding. With the HTP RSG 250 spool gun, all of the above mentioned time-consuming movement
is now a thing of the past! With our USA-Made, state-of-the-art spool gun, we put all of the adjustments right at your
fingertips for you to access while welding; with the HTP RSG 250 PP220 air-cooled spool gun, you no longer need to
climb, walk, or crawl anywhere—simply make the adjustments you want to make where you are and while you are
welding! Hot start? Slope down? Hotter? Colder? No problem! You want to do that in regular spray arc MIG? Single
pulse? Double pulse? No problem either. Our spool gun does what the competition still dreams about...all a reality
here at HTP! Available in a 25’ length.
HTP PPAC 6M 0.9 Air-Cooled Push/Pull Gun—Push/pull guns come in handy when your job requires a lot of
welding and you don’t want to constantly change 1 Lb. aluminum rolls of wire in a spool gun. This is exactly what
our engineers thought when they designed the Pro Pulse 220 MTS. To give you maximum versatility, we designed
the Pro Pulse 220 MTS to accept push/pull systems. HTP offers an 18’ air-cooled push/pull gun, with remote control
capabilities, that plugs directly into the front of your Pro Pulse 220 MTS. And because we have quality in mind on
everything we do, our push/pull system is like the rest of our products...nothing short of excellent. Made in Germany.
Remote Control Options for ALL MIG Guns
Remote control options when MIG welding, especially aluminum since aluminum is an excellent thermal conductor
are VERY critical, gives you the option to do Hot Start, Slope Down (crater fill options), as well as match the
“heat” (output level of the welder; i.e., wire speed and voltage) when welding out-of-position or when welding with
poor fit up; a remote control allows to do this with only one finger, all at the same time, and while welding. On other
machines, you have to stop welding, make adjustments on the machine, and then restart welding. Stops and restarts
create potential leak points and weak points. For example, stress cracks typically originate from a stop or a restart of
the weld. We offer sliding remote controls for your 8’ or 10’ MIG gun. Available as an add-on at any time.

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Front Panel Controls
A (Select Mode Button)—Allows you to access different welding modes by repeatedly pressing.
B, C, D, E (Setup and Selection Buttons)—The function of these buttons differs depending on which mode the
machine is in and what setup screen the machine is on. The function of the individual button is shown in the display
right above each button.
F (Upper Encoder)—Turning the upper encoder in manual mode adjusts the wire feed speed, while turning the
upper encoder in all synergic and pulse programs adjusts the material thickness, wire feed speed, amperage, and
voltage. (This can also be done while welding).
G (Lower Encoder)—Turning the lower encoder in manual mode sets the voltage, while turning the lower encoder
in all synergic and pulse programs adjusts the voltage of the synergic curve but does not set an absolute arc voltage
as it does in manual mode. (This can also be done while welding). If the machine is in a setup menu screen, you may
use the lower encoder to scroll through lists and make adjustments as necessary.
How to Weld (Express)
 Press and release button A (Select Mode) as often as required to set the desired mode (MIG 2T is probably the
most popular).
 Press and release button B once to enter program selection. Use encoder G to scroll through the program list and
find the program you need. Push and release button C to select the program, and use encoder F to set the desired
material thickness. Note: If button B is pressed twice within a short time, the machine will go into manual mode.
In the manual mode, simply use encoder F to set the wire feed speed and encoder G to set the arc voltage.
 Pull the trigger and weld.
Fig. 2

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The Programs—Overview
The Pro Pulse 220 MTS offers 22 synergic programs, both with and without pulse, as well as a manual mode. The
manual mode operates just like a classic MIG machine with wire speed adjustment in IPM (from 55 to 629) and
voltage adjustment (from 13.0 to 35.0). Manual mode can be used for wire types not included in the synergic
programs list (e.g., cast iron wire). Please obtain the correct settings from your wire distributor or manufacturer.
The synergic, non-pulse programs sound very similar to classic MIG welding. These programs offer inductance
adjustments, which makes the arc crisp or soft. On inverter-based machines, changing the arc characteristics is a
desired feature, while on classic transformer-based machines, adjustments like this are not offered.
The pulse programs are also fully synergic (the wire speed/voltage ratio is synergic as well as all of the pulse
parameters), but they sound different than classic MIG welding; the sound when pulse welding changes with the
material thickness (wire feed speed). These programs offer a slope down function, which can be used to fill craters at
the end of aluminum welds.
Both pulse and non-pulse programs offer adjustment in start speed (wire run-in), speed and duration, along with burn
back and pinch. The start speed offers the ability to set a crisp arc ignition without a “machine gun” start. Burn back
determines how long the wire sticks out of the contact tip when the weld is completed and the machine has stopped
welding. The lower the number on burn back, the longer the stick out (ATTENTION: High numbers can cause the
wire to burn back into the contact tip, destroying it). Pinch r efers to the shape of the wire; when MIG welding
(classic), a ball usually forms at the end of the wire upon completion of the weld. Then, you typically trim the ball off
with a pair of pliers. However, the Pro Pulse 220 MTS can do that for you, electrically, by setting the pinch. The
higher the pinch number, the more the wire gets trimmed electrically (ATTENTION: The number required will
change by type and diameter of wire. Also, numbers higher than 75 can cause burn back when welding with
aluminum wire).
Regardless of whether you are running a synergic or a pulsed program, the pre– and post– gas flow can also be
adjusted. Pre-flow ensures shielding gas is already in place when the welding arc starts, which minimizes or
eliminates porosity, discoloration, and/or peppering. Post-flow shields hot, glowing wire from contamination through
ambient air and also protects the weld (as long as the torch is kept in place for the post-flow duration after the weld is
completed). This function is extremely helpful when welding stainless steel and aluminum.
Welding Aluminum with the Pro Pulse 220 MTS
The Pro Pulse 220 MTS offers several different programs for welding aluminum. All of the programs are designed to
get the best results using 100% Argon gas. For aluminum welding, the use of a shallow or wide V-shaped (sometimes
referred to as U-shaped) drive roll is required, and the tension on the wire feed unit has to be properly adjusted.
Aluminum wire requires very little tension. A setting just less than 1 will be absolutely sufficient. If higher settings
are chosen, wire feed issues, such as deformation of the wire, wire getting stuck in the contact tip, burn backs, and
birds nesting, will arise. Aluminum shavings will also be deposited in the liner, which will clog up the liner.
The use of long-life contact tips is strongly recommended. Contact tips that are not specifically labeled AL for
aluminum welding can be used but need to be .005” bigger than normal (e.g., .040” tips for .035” wire). When using
contact tips labeled AL, use the tip size that matches your wire diameter size; the tip manufacturer already
compensated the actual size versus the nominal size.
Aluminum wire should be fed through a designated gun if cross contamination is a concern. While 5356 alloy
aluminum wire may be fed through a 10’ torch cable (providing the liner is in good condition and the cable is held as
straight as possible), 4043 wire needs to be fed through an 8’ torch cable. Teflon, or better, Graphite liners are
available and should be used for aluminum welding.
Flush tips or slightly recessed tips (tip holders) can be used for aluminum welding or stainless steel welding. To
improve shielding gas coverage, we suggest the use of a cylindrical nozzle for better gas distribution.
Please see the instructions that came with your aluminum wire for shielding gas flow rates and CTWD. A good gas
flow rate starting point for welding aluminum is about 35-50 CFH, but depends on wire diameter, nozzle shape,
nozzle size, etc., and a good CTWD starting point for welding aluminum is about 3/4” to 1”. The pinch function
needs to be set lower than 75 (when using .035” aluminum wire) to prevent burn backs (our suggestion is to start at

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25 and then work your way up in increments of five or ten until the ball at the end of the wire is cut off when you stop
welding. More pinch than that is not necessary. The harder the wire is and the larger the diameter, the more pinch you
will need). Pinch for any size steel wire, and for 3/64” 5554 aluminum alloy wire, is usually set at 100.
Note: If you purchased a remote control for you MIG, spool, or push/pull gun, the following is only of limited
interest to you as you can adjust your weld parameters WHILE welding at any time! So, essentially, you can
make your own hot start, slope down, and final current at any time to suit your needs.
To fill the crater at the end of the weld, the slope down (t2) may be set (a slope down time between 2.5 and 4 seconds
should suffice, but again, this number depends on material thickness and type of filler wire).
Everybody knows that aluminum is supposed to be preheated before welding. There are a few situations in which
preheating the material is not possible, practical, or safe. If you choose not to preheat the part(s) that you are welding,
for whatever reason, there is a hot start function built into the Pro Pulse 220 MTS that will reduce the effects of
starting an aluminum MIG weld on a cold part.
The hot start function will boost the welding current by about 35% above the selected settings. As the chosen settings
reach 200 amps, that boost will be reduced because the machine is only capable of putting out 220 amps for a very
short period of time. There are two ways to access hot start:
1. Through time (0.2 to 4 seconds) that can be pre-selected in the MIG 2T mode Start Menu:
a. Set the start speed to 100% and the start time to 0.1 seconds for no hot start. This will give you 0.2 seconds
of hot start time, but, in reality, that is the time it takes to ignite the arc so you will not notice any hot start.
b. Set the time to 2 seconds to get 4 seconds of hot start time. During the first 2 seconds, you will get 35% hot
start, the following 2 seconds (seconds 3 and 4) you will get hot start tapering down from +35% to the
selected welding current.
2. Fully controlled by you with no time limit (as needed) through trigger motion in MIG 4T mode:
a. Pull and hold the trigger; 35% added hot start in addition to the selected welding settings.
b. Let go of the trigger; the selected settings are being run, the arc stays lit, and welding is in progress.
c. Pull and hold the trigger; the machine initiates the slope down sequence and fills the crater at the end of the
weld. Once the slope down timer runs out, the welding current stops automatically
d. Let go of the trigger; welding completed and gas flow stopped.
Pro Tip: During hot start, slope down, or final current, there is no double pulse. If double pulse is desired during
hot start or slope down, please use a remote control (sliders on MIG guns and spool guns or potentiometers on
push/pull guns) to achieve the desired effect manually.
Note: The 4T trigger was reprogrammed in the aluminum programs.
The material thickness settings in the display are approximate, especially when welding aluminum. When welding
aluminum, the values change with the temperature or with the material welded. If the material is cold, the chosen
material thickness in the display may have to be a little higher than the actual material thickness. When the material is
preheated properly or has been welded on for a while, then the thickness in the display needs to be lower or a lot
lower than the actual material thickness. Therefore, you have the ability to adjust the material thickness (which will
adjust the wire speed and the voltage at the same time), while welding, by turning the upper encoder counter-
clockwise.
Because this is not always practical while welding, there is a second way to control the heat input. For instance, if the
machine is in MIG 2T and the slope down time is set, for example, anywhere between 3 and 6 seconds, you have the
option, if you notice that the weld is getting too hot, to let go of the trigger. Laying off the trigger lets the machine go
into slope down, causing the welding current to taper gradually. Just before the machine turns off, depress the trigger
again, though only for a very short time, and then lay off the trigger again, allowing the process to repeat. Doing this
allows you to fill in gaps and/or manually compensate for a too hot setting or the material heating up.

13
Fig. 3

14
you should see the little arrow behind the % sign move
from the first line in the display down to the second
line in the display. Now, turning encoder G will
change the arc force value. For an explanation of what
Hot-Start and Arc-Force are and what they do, please
refer to the Glossary at the back of the manual.
In order to start welding, either press home button B,
or wait 5 seconds for the machine to revert back to the
welding screen. Now, strike an arc.
TIG Welding
Press and release button A to toggle through the menu
until the LED next to TIG illuminates. TIG refers to
DC TIG lift-arc ignition. This welding process requires
DCEN (electrode negative). Plug the ground clamp
into positive Dinse receptacle W (Fig. 3), plug the
TIG torch into central connector X (Fig. 3), and plug
supply cable V (Fig. 3) into negative Dinse
receptacle Z (Fig. 3). In order to initiate an ar c and
vary the amperage while welding, a remote control,
such as a foot pedal or hand control, is needed. The
remote control needs to be plugged into the remote
control receptacle Y (Fig. 3).
The TIG welding process typically uses 100% Argon
gas. Install the flowmeter supplied with your Pro Pulse
220 MTS on the tank and connect the flowmeter to the
machine with the supplied gas hose. To connect the
gas hose, fasten one end of the gas hose to the
flowmeter and the other to the back of the welding
machine. The gas hose needs to be connected to the
gas inlet on the back of the machine. These
connections need to be a bit more than finger tight, but
be careful not to over-tighten them. A 15-20 CFH flow
rate is a good starting point (although this ultimately
depends on the cup style and size). This machine uses
the same gas solenoid for MIG and TIG welding.
When the machine is turned on and in TIG mode, the
display will read an amperage number (e.g., 200 A).
By pressing and releasing button E, you can access the
setup menu (Fig. 6; Note: The gear symbol refers to
setup.)
Fig. 4 shows a selected welding amperage of 100
amps. When you light an arc, the display will change
and display the accrual welding amperage and the arc
voltage.
In order to access the settings submenu, press button E
to show the following screen:
Fig. 4
Fig. 5
How to Weld—Step by Step
Stick Welding
Press and release button A (Select Mode) to toggle
through the menu until the LED next to Stick
illuminates. The Pro Pulse 220 MTS is now in stick
welding mode.
The LCD will show the welding amperage. Unplug the
male Dinse plug V (Fig. 3) that supplies the welding
current to the MIG gun receptacle (central or Euro
connector), if necessary, and then plug the electrode
holder (stinger) into the desired outlet. Most stick
electrodes use DCEP, which requires the electrode
holder to be plugged into positive female Dinse
receptacle W (Fig. 3) and the gr ound clamp into
negative female Dinse receptacle Z (Fig. 3). Then, use
encoder F to set your welding amperage.
The submenu in Fig. 5 allows you to select a Hot-Start
value for the stick rods. By turning encoder G, you can
change the hot start percentage to the desired setting. In
order to adjust the Arc-Force setting, press button C; Fig. 6

15
If you use a foot pedal, we recommend setting the
slope down time to 0.1 seconds.
You can adjust the slope down time by turning encoder
G until the display shows the desir ed dur ation (Fig.
7).
Fig. 7
To get to the next screen, press and release button E.
The next screen shows the gas flow options (Fig. 8).
Fig. 8
You can adjust the pre-flow gas setting by turning
encoder G. Pressing and releasing button C moves the
arrow from pre– to post-flow and turning encoder G
now adjusts the post-flow gas setting.
We recommend a 5-10 second post-flow setting for
most TIG applications.
To Start the Arc
Touch the clean and freshly sharpened tungsten to the
clean metal of the work piece that you want to weld
and that you attached the ground clamp to. Now, press
and hold the torch switch, or depress the foot pedal
(just slightly), and lift the tungsten off the work piece
about 1/8”. The machine senses that the tungsten lifted
and initiates an arc. At this point, the weld can be
made. If you use a hand control or foot pedal, you can
vary the amperage during welding. When you finish, if
using a hand control, let go of the torch switch. The Pro
Pulse 220 MTS goes into slope down, and the arc
terminates by itself. If you use a foot pedal, gently lift
your foot off the pedal to extinguish the arc.
MIG Welding—General Information
MIG welding with the Pro Pulse 220 MTS can be done
three different ways: manual, synergic, and pulse. In
any case, the following things are critical to making
good welds:
 Use the correct wire for the material being welded.
 Use the correct gas, at the correct flow rate, for the
wire.
 Use the drive roll with a groove that matches the
wire diameter chosen. There are different sizes and
shapes of drive rolls. For .023”, .024”, and .025”
diameter wire, use a drive roll marked 0.6;
for .030” wire, use a drive roll marked 0.8;
for .035” wire, use a drive roll marked 0.9 or 1.0;
for .045”, .047”, and 3/64” wire, use a drive roll
marked 1.2. (Note: Drive rolls are reversible; there
are two different size grooves on the same drive
roll, and the marking has to face you.) Also,
different materials require different drive roll
groove shapes. For instance, mild steel wire,
stainless steel wire, and silicon bronze wire
typically use a standard V shaped drive roll (Fig.
9). Softer aluminum wire uses a U shaped, or V90
degree, drive roll (Fig. 10). Flux-cored wire,
whether used with or without gas, and most hard-
faced wire requires the use of a knurled drive
roll—the little teeth provide extra traction on these
wires (Fig. 11).
Fig. 9
Fig. 10
Fig. 11

16
 Use the proper wire tension. When welding with
mild steel or stainless steel, feed tension is
important but a little forgiving. Generally, the wire
tension should be set around 3. If that does not give
you good results, there is most likely a problem
unrelated to wire tension present. For example, a
bad contact tip, a bad liner, a defective welding
gun, etc. can cause wire to not feed smoothly.
When welding flux-cored wire, the tension should
be set lower than 2. If flux-cored wire is being fed
through a wire feeder with too much tension, the
tubular flux-cored wire will deform and its shape
will change; the wire will become oblong and too
big to fit through the contact tip. Improper
electrical contact, poor weld quality, burned tips,
and other issues will follow. Also, over-tightened
drive roll tension and deformed wire will cause
metal particles to separate from the wire. Those
particles will, over time (sometimes a very short
time, such as after welding only several pounds of
wire), deposit themselves in the liner as the wire is
transported through the gun, ultimately clogging
the liner and rendering it useless. When welding
aluminum, the drive roll tension should be less than
1. This minimizes the chances of the wire birds
nesting (Note: If there is burn back or another issue
that jams the wire feed, the setting should be so
low that the drive rolls slip on the wire rather
than continue to feed, which results in birds
nesting).
 Use contact tips that match the diameter of the wire
selected. For example, use .030” contact tips
with .030” wire, use .035” contact tips with .035”
wire, and so on. Follow these instructions for all
wire types, no matter the metal or alloy. However,
on aluminum wire, we strongly recommend the use
of long-life contact tips or designated aluminum
contact tips (AL stamped into the tip next to the
size). If designated aluminum tips are not available,
and long-life tips are used, the tip size must
be .005” larger than the wire size. For example,
.035” aluminum wire would require the
standard .040” tip, and 3/64” aluminum wire would
require the standard .052” tip. (Note: Designated
aluminum tips are manufactured roughly .005”
larger in actual diameter versus the same size
long-life tips, and .035” tips are used for .035”
wire.)
 Use the correct polarity. Most MIG wires are
welded DCEP (electrode positive), and there are
very few exceptions to this rule (gasless flux-cored
wire and some specialty hard-surfacing wires are
exceptions). If in doubt, please consult the data
sheet that came with the wire, the box the wire
came in, or contact the distributor you bought the
wire from.
 Use the correct welding gun. For welding stainless
steel wire or aluminum wire, a cylindrical gas
nozzle provides better gas coverage.
 If welding in synergic or pulse mode, select the
correct material thickness (reduce the material
thickness if you need to fill big gaps or if the
material you are welding is very hot) and observe
the wire manufacturer’s recommended CTWD.
MIG 2T
Fig. 12
Press and release Select Mode button A as many times
as needed until the green LED next to 2T illuminates.
If welding in the manual mode is desired, press and
release button B twice quickly. The machine is now in
manual mode (Fig. 12). Turn encoder F to set the wire
feed speed, and turn encoder G to set the voltage.
If welding with synergic or pulse programs is desired,
press and release button B once to display the
program list (Fig. 13).
Fig. 13
Use encoder G to scroll through the program list, and
select the program that best fits your current job (the
yellow bar that highlights the program will move as
you turn encoder G).
There are 22 programs in the Pro Pulse 220 MTS. To
see a complete list of the programs installed on your
Pro Pulse 220 MTS, please see Appendix I on page X.
Each program in the list includes a short description.
Please see a few examples of what you will see
below:
 Ms—ER70S6 Alloy Mild Steel
 Al 5356—5356 Alloy Aluminum

17
3. Al 5554—5554 Alloy Aluminum
 Al 4043—4043 Alloy Aluminum
 SS308—308 Alloy Stainless Steel
 SiBro—Silicon Bronze (brazing wire)
 Flux-Cored Gasless—E71T-11 or E71TGS
 Flux-Cored—E71T1
 .025, .030, .035, 3/64—These numbers refer to the
wire diameter required for the selected program.
 Ar 8-25%CO2—Indicates the welding gas
required. This program requires a mixed gas with
the majority being Argon and the balance being
CO2. Mixtures from 92% Argon and 8% CO2 to
75% Argon and 25% CO2 are acceptable.
11. Ar 8-10%CO2—Indicates that either a 92% Argon
and 8% CO2 or a 90% Argon and 10% CO2 gas
mixture is required.
12. Ar 2%CO2—Indicates that a 98% Argon and 2%
CO2 gas mixture is required.
13. Ar 25%CO2—Indicates that a 75% Argon and 25%
CO2 gas mixture is required.
14. 100%Ar—Indicates that 100% Argon is required.
All of the programs listed are synergic. PULSE means
that the program runs in single pulse mode. The sound
of the machine changes and the spray arc transfer is
used.
PAW means Precision Aluminum Welding. PAW is
a single pulse program and is a special process for very
thin aluminum (as it is commonly found in the
automotive industry). The weld-able material thickness
in this program is approximate—material thicknesses
range from .030” to .080”.
DOUBLE PULSE means that the pulse weld (the
pulse frequency changes with the material thickness) is
overlaid with a second lower pulse frequency (that
stays constant no matter the material thickness), which
reduces the heat input even further when welding and
produces MIG welds that look like TIG welds.
below displays, starting from the left, the approximate
amperage (calculated based on material, wire speed,
wire diameter, and other variables), arc voltage, and
material thickness. By turning encoder F, you can adjust
the material thickness; adjusting the material thickness
also adjusts, automatically, the wire speed and the
voltage. In the center of the LCD, the wire speed is
displayed in IPM. Below that, the voltage deviation of
the synergic curve is displayed. This value is supposed
to read 0.0V at most times, for most welding operations.
You can adjust this value by turning encoder G. If an
adjustment is made, the absolute arc voltage changes
and the color changes from black to red. A deviation of
the synergic arc does two things: it changes the arc
length and it makes the weld hotter or colder. However,
on a synergic machine, the main heat adjustment is made
with encoder F by setting material thickness. The
voltage deviation made with encoder G is considered
fine-tuning or a personal preference adjustment. You
will find the function buttons (B, C, D, and E) on the
bottom of the display. In this case (Fig. 14), button B, if
pressed and release once, brings up the program list, or,
if pressed and released twice quickly, switches the
machine into manual mode. Pressing button C accesses
the Job menu, button D has no function at this point, and
pressing button E accesses the advanced setup menu.
Fig. 14
Once you select a program, the program list disappears
and the program is displayed (Fig. 14). The top line in
the display shows the name of the program, the wire
diameter, and the required gas/gas mixture. It also
indicates if it is a synergic or a pulse program. The line
Fig. 15
By pressing and releasing button E once, you enter the
setup menu (Fig. 15). The first screen in the setup
menu gives you the option to adjust the start speed.
Typically, numbers between 70% and 100% are
suitable for the start speed.
For steel wire, start speeds between 50 and 80% can be
a good starting point. For .035” diameter aluminum
wire, start speeds of 100% are common and for 3/64”
diameter aluminum wire, start speeds between 40 and
60% are typical.
The start time determines how long the machine runs
at the selected wire speed until it switches to 100%
wire speed. Start times between 0.1 and 0.5 seconds
are common. Typically, 0.3 seconds is most common.
Correct adjustment of the start parameters allow for a
spatter-free and smooth arc initiation. To set the start
speed, turn encoder G; to set the start time, press and

18
Fig. 16
To go to the next screen, press and release button E.
The new screen (Fig. 16) allows you to make
adjustments to what the wire does upon weld
completion. Burn back adjusts how long the wire
sticks out after you finish welding. A low number
allows the wire to stick out as it normally does on a
classic MIG welder, without any adjustments. The
higher the number, the shorter the stick out (Attention:
High burn back numbers create the risk of burning the
wire back into the contact tip. We recommend starting
out with very low numbers). Different wires react
differently. For example, aluminum reacts differently
than steel; when welding aluminum, set burn back to
004. The pinch function clips wire electrically. Right
before you finish the weld, the machine sends a burst
of current that shapes the end of the wire. Depending
on the setting, there might not be a ball on the end of
the wire that needs to be clipped off before re-striking
an arc. To set the pinch, push and release button C
once, and then turn encoder G to the desired setting.
Different wire types need different settings. For
instance, flux-cored wire doesn’t need much pinch,
while aluminum wire tends to work well with 30% to
60% pinch, depending on the alloy and diameter (high
pinch rates, such as more than 75% pinch cause burn
backs near or into the tip, which causes damage to the
tip). Steel wire and 3/64” diameter 5554 aluminum
wire needs 100% pinch to get the desired result.
After adjusting the burn back and pinch, press and
release button E again to get to the next screen. This
screen (Fig. 17) allows you to adjust the slope down
setting for pulse welding. The slope down feature allows
you to fill the crater at the end of an aluminum weld or
allows you to neatly feather out a stainless steel weld.
On aluminum, set t2 between 3 and 5 seconds by turning
encoder G. After you release the trigger, the machine
still runs for the amount of time selected, but tapers
down automatically during the slope down time. The
tapering is visual in the arc and is also audible (the
frequency and the sound of the machine change). If no
slope down is desired, set t2 to 0.1 seconds.
Fig. 18
The slope down feature is only available in pulse
programs. Synergic, non-pulse programs have an option
to adjust inductance (Fig. 18). By turning encoder G,
you can adjust the inductance of the machine. Typically,
this feature is not available on transformer machines or
budget inverter machines. The inductance feature allows
you to set the arc characteristics from stiff/crisp to soft.
release button C (the little, left-pointing arrow will
move down from start speed to start time). Turning
encoder G now adjusts the start time.
Fig. 17
Fig. 19
You can access the final screen (Fig. 19) by pressing
and releasing button E once again. Options on the final
screen should not be adjusted by you unless previously
instructed by HTP America, Inc. technical service. In
this screen, the machine can be switched from Imperial
to Metric (which is preferred by many collision repair
shops). Also, if an optional spool gun is used on the
machine it needs to be activated here.

19
MIG 4T
The selection and setup of MIG 4T works identically to
MIG 2T. The only difference between MIG 2T and
MIG 4T is trigger function. In MIG 2T, pressing and
holding the trigger will make the weld, and releasing
the trigger will stop the weld. In MIG 4T, pressing the
trigger will make the gas flow, releasing the trigger will
make the weld start, pressing the trigger again will
make the weld stop, and releasing the trigger will make
the gas stop. The procedure is the same when welding
mild steel, stainless steel, silicon bronze, flux-cored, as
well as every other kind of welding wire.
Attention: The 4T tr igger is reprogr ammed for ALL
pulsed aluminum programs. We assigned a hot start
function to the initial pull. Please read Welding
Aluminum with the Pro Pulse 220 MTS (pages 10
and 11) to fully understand the hot start function.
Stitch Welding
Fig. 20
to. The stitch process repeats itself indefinitely until
you release the trigger.
Pro Tip: Don’t use any slope down with spot or
stitch timers unless you are aware of the
consequences and that that is really your desired
weld procedure.
NOTE: Try to avoid turning the Pro Pulse 220
MTS off when in stitch mode. If you turn the
machine off in stitch mode, you may encounter an
overheat message when you turn the
machine back on. If you turn the machine off and
encounter the overheat message, turn the machine
off again and then back on. When you turn the
machine back on, press button A (Select Mode)
three (3) times within 3-5 seconds. This will put the
Pro Pulse 220 MTS back into MIG 2T mode. At
this point, the machine should be operational, but
we suggest that you once again turn the machine off
and then power back on.
Note: The Stitch weld function can also be used as a
Spot welding function. Set your Time ON for the
spot weld size/duration you want to do and select a
long Time OFF (for example 5-10 seconds) so you
can let go of the trigger before the next spot weld
starts.
Press and release button A (Select Mode) until the LED
next to STITCH illuminates, and then press and release
button E to enter the menu. The new screen (Fig. 20)
lets you adjust Time ON and Time OFF for stitch
welding. To adjust Time ON, turn encoder G to the
desired time, and then press and release button C. Now
encoder G will adjust Time OFF. When initially setting
up the stitch feature, set the start speed to 100% and the
time to 0.1 seconds. Later, the settings may be adjusted
to yield the best results. Stitch welding can be used to
reduce heat input, to fill gaps where the fit is less than
perfect, or on thin material where burning through is a
concern. When you press and hold the trigger, the
machine welds for the amount of time that Time ON is
set to, then it will stop (while the trigger is still
depressed) for the amount of time that Time OFF is set

20
JOB Mode
The Job Mode function, which is active in all welding
modes, allows you to store and recall up to 30 JOBS
(welding parameter settings).
How to Store JOBs (Welding Parameter Settings)
 Press the JOB button C to pull up the JOB LIST
page.
 Use the ↑ button D, the ↓ button E, or the V/SET
encoder G to select the program in which you want
to save the welding parameter settings.
 Press and hold the SAVE button C for about three
(3) seconds until you hear a double beep. If you hear
a triple beep and see “THIS JOB IS PROTECTED,
DO YOU WANT TO OVERWRITE IT?” in the
display, either press button E to proceed or button D
to cancel.
 After saving the JOB, the LCD reverts back to the
main page where you can see the JOB number
above button C.
NOTE: An * symbol next to the JOB means the JOB
is in use, and a flashing * symbol next to the JOB
means the JOB is modified from the original.
To leave the current JOB and return the Pro Pulse into
the “regular” welding mode, quickly press and release
the JOB button C, and then press and hold the Select
Mode button A for approximately five (5) seconds. You
should hear five (5) short beeps and one longer beep,
after which the * symbol next to the JOB you were
using clears. Wait an additional three (3) seconds, and
the Pro Pulse 220 MTS will be back in the regular
welding mode.
How to Load Stored Jobs
1. Press the JOB button C to pull up the JOB LIST
page.
2. Use the ↑ button D, the ↓ button E, or the V/SET
encoder G to select the JOB you want to recall.
3. Press and hold the RECALL button B for about
three (3) seconds until you hear a double beep.
4. After recalling the JOB, the LCD reverts back to the
main page where you can see the JOB number
above button C.
ATTENTION: THE PARAMETERS SAVED IN
JOBS 1 THROUGH 12 ARE PROTECTED. WHEN
YOU RECALL JOBS 1 THROUGH 12, THEY
WILL BE BLOCKED, WHICH MEANS YOU
CANNOT ACCIDENTALLY ALTER OR MODIFY
THEM. IN ORDER TO INTENTIONALLY
MODIFY A SAVED AND PROTECTED JOB, DO
THE FOLLOWING:
 Quickly press and release the JOB button C, and
then press and hold the Select Mode button A for
about five (5) seconds; you will hear five (5) short
beeps and one (1) long beep, and the * symbol
next to the JOB you were using disappears. After
an additional three (3) seconds, the machine will
be back in the regular welding mode.
 Make the desired adjustments and modifications
to the program.
 Follow the steps from the How to Store JOBs
(Welding Parameter Settings) instr uctions on
to overwrite the protected parameters with the new
parameters.
Trigger JOB Function
The first three JOBs in the JOB LIST can be loaded
and recalled simply by pulling the trigger of the
welding gun. The following criteria must be met in
order to use the Trigger JOB Function:
 At least two of the first three slots in the JOB
LIST need to have welding parameter settings, or
a JOB, assigned to them (the slots are empty when
the Pro Pulse 220 MTS leaves the factory).
 Each set of parameters (JOB) saved in slots 1
through 3 needs to be MIG 2T. The Trigger JOB
Function does not work with MIG 4T. In MIG 2T,
pressing and holding the trigger makes the
machine weld and releasing the trigger makes the
machine stop welding.
 Each set of parameters (JOB) saved in slots 1
through 3 needs to have a pre-gas flow time of at
least 0.3 seconds or higher.
Follow the instructions below to switch between JOBs
1 through 3 via the Trigger JOB Function:
 Hold the gun in the air; press and immediately
release the torch trigger without striking an arc.
 Watch the display to see the settings change.
 Every time you use the trigger in the manner
described above, the machine accesses the next
JOB (e.g., running through the instructions the
first time activates JOB #1, a second run through
activates JOB #2, a third run through activates
JOB #3, a fourth run through activates JOB #1
once again, and so on).