RST100
V1_04.23
ENGLISH
INCLUDES:
Welding Machine, Stick Electrode Holder and Ground Cable and Clamp
RST100
STICK PRO 100
OPERATING MANUAL
2
3
STOP!
PLEASE DO NOT RETURN
TO THE STORE
If you have questions or problems with your new
welder,
please contact customer service at 1-800-4-RIDGID
or
www.RIDGID.com/about-us/contact-us.
Thank you and enjoy your new welder.
For the most up-to-date
warranty information,
visit www.RIDGID.com
4
WARRANTY ...................................................................................................................................... 3
TABLE OF CONTENTS ....................................................................................................................... 4
SYMBOLS LEGEND ........................................................................................................................... 5
SAFETY SUMMARY .......................................................................................................................... 5
PRINCIPAL SAFETY STANDARDS .......................................................................................................................... 5
CALIFORNIA PROPOSITION 65 WARNING ........................................................................................................... 6
EMF INFORMATION ................................................................................................................................................ 6
PERSONAL PROTECTION ....................................................................................................................................... 6
FIRE PREVENTION ................................................................................................................................................... 7
HIGH FREQUENCY RADIATION ............................................................................................................................. 8
ARC WELDING ......................................................................................................................................................... 8
ELECTRIC SHOCK .................................................................................................................................................... 8
NOISE ....................................................................................................................................................................... 9
ADDITIONAL SAFETY INFORMATION ................................................................................................................... 9
BOX CONTENTS ................................................................................................................................ 9
INSTALLATION ................................................................................................................................ 10
WELDER SPECIFICATIONS ...................................................................................................................................10
SITE SELECTION ...................................................................................................................................................10
POWER SOURCE CONNECTION ...........................................................................................................................10
GENERATORS ......................................................................................................................................................... 11
EXTENSION CORDS ..............................................................................................................................................11
VENTILATION .........................................................................................................................................................11
ADDITIONAL WARNINGS ...................................................................................................................................... 11
GETTING TO KNOW YOUR WELDER ................................................................................................. 12
DESCRIPTION ........................................................................................................................................................ 12
WELDER LAYOUT AND CONTROLS .....................................................................................................................12
OPERATION..................................................................................................................................... 14
PERFORMANCE DATA PLATE & DUTY CYCLE ................................................................................................... 14
INTERNAL THERMAL PROTECTION .................................................................................................................... 14
WELDING PREPARATION ..................................................................................................................................... 15
SETUP FOR STICK WELDING (SMAW) ................................................................................................................ 15
SETUP FOR TIG WELDING (GTAW) WITH LIFT ARC ........................................................................................... 16
GAS SELECTION ................................................................................................................................................... 16
MAINTENANCE & SERVICING ........................................................................................................ 17
GENERAL MAINTENANCE ................................................................................................................................... 17
TROUBLESHOOTING ....................................................................................................................... 17
MACHINE PARTS DIAGRAM & REPLACEMENT PARTS LIST .......................................................... 19
TIG TORCH & TIG CONSUMABLES LIST (SOLD SEPARATELY) ......................................................... 20
USER NOTES ................................................................................................................................... 21
Box ContentsTable of Contents
5
CAUTION!
BEFORE INSTALLING, OPERATING OR CARRYING OUT MAINTENANCE ON THE MACHINE, READ THE
CONTENTS
OF THIS MANUAL CAREFULLY, PAYING PARTICULAR ATTENTION TO THE SAFETY RULES AND HAZARDS.
In the event of these instructions not being clear, please contact your
RIDGID Authorized Dealer or RIDGID Customer Service 1-800-4-RIDGID
SYMBOL
MEANING
SYMBOL MEANING SYMBOL MEANING
ARC RAYS HAZARD
FIRE HAZARD NOISE HAZARD
POISON HAZARD
ELECTRICAL HAZARD WARNING/CAUTION
STICK (SMAW) TIG (GTAW) TEMPERATURE
POSITIVE DINSE INPUT VOLTAGE AMPERAGE
NEGATIVE DINSE
SINGLE PHASE STATIC FREQUENCY
CONVERTER TRANSFORMER RECTIFIER
I ON LINE CONNECTION DIRECT CURRENT (DC)
O OFF
SINGLE PHASE
ALTERNATING CURRENT (AC)
SUITABLE FOR WELDING IN AN
ENVIRONMENT WITH INCREASED
RISK OF ELECTRIC SHOCK
The data within this safety summary are highlights of various safety standards. It is
recommended that you familiarize yourself with the standards listed below before
beginning welding.
• ANSI Z49.1: SAFETY IN WELDING AND CUTTING - Obtainable from the American Welding Society, 550
NW Le Jeune Road, Miami, FL 33126 Telephone (800) 443-9353, Fax (305) 443-7559 - www.amweld.org
or www.aws.org.
• OSHA 29 CFR, Part 1910, Subpart Q.: WELDING, CUTTING AND BRAZING - Obtainable from your state
OSHA oce or U.S. Dept. of Labor OSHA, Oce of Public Aairs, Room N3647, 200 Constitution Ave.,
Washington, DC 20210 - www.osha.gov
• AWS F4.1: SAFE PRACTICES FOR THE PREPARATION FOR WELDING AND CUTTING OF CONTAINERS
AND PIPING FOR WELDING AND CUTTING. - Obtainable from the American Welding Society, 550 NW
Le Jeune Road, Miami, FL 33126 Telephone (800) 443-9353, Fax (305) 443-7559 - www.amweld.org or
www.aws.org.
• AWS A6.0. WELDING AND CUTTING CONTAINERS WHICH HAVE HELD COMBUSTIBLES - Obtainable
from the American Welding Society, 550 NW Le Jeune Road, Miami, FL 33126 Telephone (800) 443-
9353, Fax (305) 443-7559 - www.amweld.org or www.aws.org.
• NFPA 70: NATIONAL ELECTRICAL CODE - Obtainable from the National Fire Protection Association, 1
Batterymarch Park, P.O. Box 9101, Quincy, MA 02269-9101 Telephone (617) 770-3000 Fax (617) 770-0700
- www.nfpa.org
• CGA Publication P-1: SAFE HANDLING OF COMPRESSED GASES IN CONTAINERS - Obtainable from
Compressed Gas Association, 14501 George Carter Way, Suite 103, Chantilly, VA 20151 Telephone (703)
788-2700 Fax (703) 961-1831 - www.cganet.com
• CSA W117.2 - Code for SAFETY IN WELDING AND CUTTING. - Obtainable from Canadian Standards
Association, 178 Rexdale Blvd., Etobicoke, Ontario M9W 1R3 - www.csa.ca
Symbols Legend
Safety Summary
Principal Safety Standards
6
• ANSI Z87.1 - SAFE PRACTICE FOR OCCUPATION AND EDUCATIONAL EYE AND FACE PROTECTION
- Obtainable from the American National Standards Institute, 11 West 42nd St., New York, NY 10036
Telephone (212) 642A900, Fax (212) 398-0023 - www.ansi.org
• NFPA 51B: STANDARD FOR FIRE PREVENTION DURING WELDING, CUTTING, AND OTHER HOT WORK-
Obtainable from the National Fire Protection Association, 1 Batterymarch Park, P.O. Box 9101, Quincy,
MA 02269-9101 Telephone (617) 770-3000 Fax (617) 770-0700 - www.nfpa.org
California Proposition 65 Warning
WARNING: This product can expose you to chemicals, including lead, which are known to the State
of California to cause cancer and birth defects or other reproductive harm. For more information go to
www.P65Warnings.ca.gov.
EMF Information
Welding current, as it flows through the welding cables, will cause electromagnetic fields. There has
been and still is some concern about such fields. However, after examination, the committee of the
National Research Council concluded that: “The body of evidence, in the committee’s judgment, has
not demonstrated that exposure to power-frequency electric and a magnetic field is a human health
hazard.” However, studies are still going forth and evidence continues to be examined. Until the final
conclusions of the research are reached, you may wish to minimize your exposure to electromagnetic
fields when welding.
To reduce magnetic fields in the workplace, use the following procedures:
1. Keep electrode and ground cables close together by twisting or taping them when possible.
2. Arrange cables to one side and away from the operator.
3. Do not coil or drape cables around your body.
4. Keep welding power source and cables as far away from operator as practical.
5. Connect ground clamp to workpiece as close to the cut or weld as possible.
ABOUT PACEMAKERS & HEARING AIDS:
Pacemaker and hearing aid wearers consult your doctor first. If cleared by your doctor, then following
the above procedures is recommended.
Personal Protection
Welding processes of any kind can be dangerous not only to the operator but to any person situated
near the equipment, if safety and operating rules are not strictly observed.
THE WELDING ARC PRODUCES VERY BRIGHT ULTRAVIOLET AND INFRARED LIGHT.
THESE ARC RAYS WILL DAMAGE YOUR EYES AND BURN YOUR SKIN IF YOU ARE
NOT PROPERLY PROTECTED. To reduce the risk of injury from arc rays, read, understand, and
follow the safety instructions. In addition, make certain that anyone else that uses this welding
equipment, or is a bystander in the welding area understands and follows these safety instructions as
well. Helmets and filter should conform to ANSI Z87.1 stan dards.
• Do not look at an electric arc without proper protection. A welding arc is extremely bright and
intense and, with inadequate or no eye protection, the retina can be burned, leaving a permanent
dark spot in the field of vision. A shield or helmet with a #10 shade filter lens (minimum) must be
used.
• Provide bystanders with shields or helmets fitted with an appropriate shade filter lens.
• Do not strike a welding arc until all bystanders and you (the welder) have welding shields and/or
helmets in place.
• Do not wear a cracked or broken helmet and replace any cracked or bro ken filter lenses
immediately.
• Do not allow the uninsulated portion of the TIG torch to touch the ground clamp or grounded
workpiece to prevent an arc flash from being created on contact.
• Wear protective clothing. The intense light of the welding arc can burn the skin in much the same
way as the sun, even through light-weight clothing. Wear dark clothing of heavy material. The shirt
worn should be long sleeved and the collar kept buttoned to protect chest and neck.
• Protect against reflected arc rays. Arc rays can be reflected o shiny surfaces such as a glossy
painted surface, aluminum, stainless steel, and glass. It is possible for your eyes to be injured by
reflected arc rays even when wearing a protective helmet or shield. If welding with a reflective
surface behind you, arc rays can bounce o the surface and o the filter lens. It can get inside your
helmet or shield and into your eyes. If a reflective background exists in your welding area, either
remove it or cover it with something non-flammable and non-reflective. Reflective arc rays can also
cause skin burn in addition to eye injury.
7
• Flying sparks can injure. Wear proper safety equipment to protect eyes and face. Shape tungsten
electrode on grinder wearing proper protection and in a safe location. Keep flammables away and
prevent fire from flying sparks.
FUMES, GASSES, AND VAPORS CAN CAUSE DISCOMFORT, ILLNESS, AND DEATH!
To reduce the risk, read, understand, and follow the safety instructions. In addition, make certain that
anyone else that uses this welding equipment or is a bystander in the welding area, understands and
follows these safety instructions as well.
• Read and understand manufacturers Safety Data Sheets (SDS) and Material Safety Data Sheets
(MSDS).
• Do not weld in an area until it is checked for adequate ventilation as described in ANSI standard
Z49.1. If ventilation is not adequate to exchange all fumes and gasses generated during the welding
process with fresh air, do not weld unless you (the welder) and all bystanders are wearing air-
supplied respirators.
• Do not heat metals coated with, or that contain, materials that produce toxic fumes (such as
galvanized steel), unless the coating is removed. Make certain the area is well ventilated, and the
operator and all bystanders are wearing air-supplied respirators.
• Do not weld, cut or heat lead, zinc, cadmium, mercury, beryllium, antimony, cobalt, manganese,
selenium, arsenic, copper, silver, barium, chromium, vanadium, nickel, or similar metals without
seeking professional advice and inspection of the ventilation of the welding area. These metals
produce extremely toxic fumes which can cause discomfort, illness and death.
• Do not weld or cut in areas that are near chlorinated solvents. Vapors from chlorinated
hydrocarbons, such as trichloroethylene and perchloroethylene, can be decomposed by the heat
of an electric arc or its ultraviolet radiation. These actions can cause phosgene, a highly toxic gas
to form, along with other lung and eye-irritating gasses. Do not weld or cut where these solvent
vapors can be drawn into the work area or where the ultraviolet radiation can penetrate to areas
containing even very small amounts of these vapors.
• Do not weld in a confined area unless it is being ventilated or the operator (and anyone else in the
area) is wearing an air-supplied respirator.
• Stop welding if you develop momentary eye, nose, or throat irritation as this indicates inadequate
ventilation. Stop work and take necessary steps to improve ventilation in the welding area. Do not
resume welding if physical discomfort persists.
Fire Prevention
FIRE OR EXPLOSION CAN CAUSE DEATH, INJURY, AND PROPERTY DAMAGE! To
reduce these risks, read, understand and follow the safety instructions. In addition, make certain that
anyone else that uses this welding equipment, or is a bystander in the welding area, understands
and follows these safety instructions as well. Remember: arc welding by nature produces sparks, hot
spatter, molten metal drops, hot slag and hot metal parts that can start fires, burn skin and damage
eyes.
• Do not wear gloves or other clothing that contains oil, grease, or other flammable substances.
• Do not wear flammable hair preparations.
• Do not touch the hot weld bead or weld puddle until fully cooled.
• Do not weld in an area until it is checked and cleared of combustible and/or flammable materials.
Be aware that sparks and slag can fly 35 feet and can pass through small cracks and openings. If
work and combustibles cannot be separated by a minimum of 35 feet, protect against ignition with
suitable, snug-fitting, fire resistant, covers or shields.
• Do not weld on walls until checking for and removing combustibles touching the other side of the
walls.
• Connect the ground cable to the workpiece as close as possible to the welding area. Do not
connect ground cables to building framing or other locations away from the welding area. This
increases the possibility of welding current passing through alternate circuits, creating fire hazards
and other safety hazards.
• Do not weld, cut, or perform other such work on used barrels, drums, tanks, or other containers
that had a flammable or toxic substance. The techniques for removing flammable substance and
vapors, to make a used container safe for welding or cutting, are quite complex and require special
education and training.
• Do not strike an arc on a compressed gas or air cylinder, and never allow any electrically “hot”
parts to touch a cylinder. Doing so will create a brittle area that can result in a violent rupture
immediately or at a later time as a result of rough handling.
• Ensure any compressed gas cylinders in the work area have properly operating regulators rated for
the gas and pressure used. All hoses, fittings, etc. should be in good condition.
8
• Do not stand in front of or put your head or face in front of a cylinder valve outlet when opening the
valve.
• If a cylinder is not in use or connected for use, keep a valve protection cap in place to protect the
valve.
• Keep cylinders upright and securely chain them to a fixed support to prevent tipping.
• Keep cylinders away from areas where they may be subjected to physical damage or accidentally
struck. Keep them a safe distance from any source of flame, sparks, or heat.
• Do not weld or cut in an area where the air may contain flammable dust (such as grain dust), gas,
or liquid vapors (such as gasoline).
• Do not handle hot metal, such as the workpiece or electrode stubs, with bare hands.
• Wear leather gloves, heavy long sleeve shirt, cu-less pants, high-topped shoes, helmet, and cap.
As necessary, use additional fire-resistant protective clothing to cover and protect the upper and
lower body. Hot sparks or metal can lodge in rolled up sleeves, pant cus, or pockets. Sleeves and
collars should be kept buttoned and pockets eliminated from the shirt front.
• Have fire extinguisher equipment handy for immediate use. A portable chemical fire extinguisher,
type ABC, is recommended.
• Wear ear plugs when welding overhead to prevent spatter or slag from falling into ear.
• Make sure welding area has a good, solid, safe floor, preferably concrete or masonry, not tiled,
carpeted, or made of any other flammable material.
• Protect flammable walls, ceilings, and floors with heat resistant covers or shields.
• Check welding area to make sure it is free of sparks, glowing metal or slag, and flames before
leaving the welding area.
• Wear garments free of oil or other flammable substances such as leather gloves, thick cotton shirts
with no synthetic materials, cu-less trousers, closed toed shoes. Keep long hair pulled back.
• Remove any combustibles such as lighters and matches before doing any welding.
• Follow requirements in OSHA and NFPA for hot work and have an extinguisher nearby.
High Frequency Radiation
• High Frequency (H.F) can interfere with radio navigation, safety services, computers and
communication equipment.
• It is the user’s responsibility to have a qualified electrician promptly correct any interference
problem resulting from the installation. Electrician should regularly check and maintain installation.
• Stop using the equipment if notified by the FCC about interference.
• Keep H.F. source doors and panels tightly shut and keep spark gaps at correct setting.
Arc Welding
• Computers and computer driven equipment can be harmed with electromagnetic energy.
• Be sure all equipment is compatible with electromagnetic energy.
• Keep welding cables short to reduce interference.
• Follow manual to install and ground machine.
• If interference continues, shield the work area or move the welding machine.
WARNING: ELECTRIC SHOCK CAN KILL! To reduce the risk of death or serious injury from
shock, read, understand, and follow the safety instructions. In addition, make certain that anyone else
who uses this welding equipment, or who is a bystander in the welding area understands and follows
these safety instructions as well.
IMPORTANT! TO REDUCE THE RISK OF DEATH, INJURY, OR PROPERTY DAMAGE, DO
NOT ATTEMPT OPERA TION of this welding equipment until you have read and understand the
following safety summary.
• Do not, in any manner, come into physi cal contact with any part of the welding current circuit. The
welding current circuit includes:
a. the workpiece or any conductive material in contact with it,
b. the ground clamp,
c. the electrode or welding wire,
d. any metal parts on the electrode holder, or TIG torch.
• Do not weld in a damp area or come in contact with a moist or wet surface.
Electric Shock
9
• Do not attempt to weld if any part of clothing or body is wet.
• Do not allow the welding equipment to come in contact with water or moisture.
• Do not drag welding cables, TIG torch, electrode holder or welder INPUT POWER CABLE (8)
through or allow them to come into contact with water or moisture.
• Do not touch welder, attempt to turn welder ON or OFF if any part of the body or clothing is moist
or if you are in physical contact with water or moisture.
• Do not attempt to plug the welder into the power source if any part of body or clothing is moist, or
if you are in physical contact with water or moisture.
• Do not connect ground clamp to electrical conduit, and do not weld on electrical conduit.
• Do not alter INPUT POWER CABLE or plug in any way.
• Do not attempt to plug the welder into the power source if the ground prong on INPUT POWER
CABLE plug is bent over, broken o, or missing.
• Do not allow the welder to be connected to the power source or attempt to weld if the welder,
welding cables, welding site, or welder INPUT POWER CABLE are exposed to any form of
atmospheric precipitation, or salt water spray.
• Do not carry coiled welding cables around shoulders, or any other part of the body, when they are
plugged into the welder.
• Do not modify any wiring, ground connections, switches, or fuses in this welding equipment.
• Wear welding gloves to help insulate hands from welding circuit.
• Keep all liquid containers far enough away from the welder and work area so that if spilled, the
liquid cannot possibly come in contact with any part of the welder or electrical welding circuit.
• Replace any cracked or damaged parts that are insulated or act as insulators such as welding
cables, INPUT POWER CABLE, or electrode holder immediately.
• When not welding, cut wire back to contact tip or remove electrode from electrode holder.
Noise
Noise can cause permanent hearing loss. Welding processes can cause noise levels that exceed safe
limits. You must protect your ears from loud noise to prevent permanent loss of hearing.
• To protect your hearing from loud noise, wear protective ear plugs and/or ear mus.
• Noise levels should be measured to be sure the decibels (sound) do not exceed safe levels.
Additional Safety Information
For additional information concerning welding safety, refer to the standards listed at the
beginning of this safety summary and comply with them as applicable.
Box Contents
ITEM
DESCRIPTION
ITEM DESCRIPTION ITEM DESCRIPTION
RIDGID® Stick PRO 100
Stick Electrode Holder
Ground Cable
and Clamp
(See page 12 for more information)
10
Primary (input) volts 120VAC
Maximum Output 85A (DC output only)
Phase Single
Frequency 50/60Hz
Recommended Circuit Breaker 20A time-delay (slow-blow) breaker minimum
(30A for maximum performance)
Extension Cord Recommendations 3 conductor #12AWG or larger up to 25 ft.
Generator Requirements Minimum 4,000W continuous output with no low-
idle function (or low-idle o)
CSA Rated Output and Duty Cycle Refer to the data plate of your machine and the
DUTY CYCLE section of this manual, page 14.
Dimensions 12" (304.8mm) X 5.5" (139.7mm) X 10.5"
(266.7mm)
Weight 9.65 lbs. (4.38 kg)
Recommended Electrode Diameter Up to 1/8”
BE SURE TO LOCATE THE WELDER ACCORDING TO THE FOLLOWING GUIDELINES:
• In areas free from moisture and dust;
• In areas with ambient temperature between 30° to 90°F;
• In areas free from oil, steam and corrosive gases;
• In areas not subjected to abnormal vibration or shock;
• In areas not exposed to direct sunlight or rain;
• Place at a distance of 12” or more from walls or similar obstructions that could restrict natural air
flow for cooling.
Before you make any electrical connection, make sure that the ON/OFF SWITCH (7) is OFF, power
supply voltage and frequency available at site are those stated in the ratings label of your welder.
The main power supply voltage should be within ±10% of the rated main power supply voltage. Too
low a power supply voltage may cause poor welding performance. Too high a power supply voltage
will cause components to overheat and possibly fail. The welder outlet must be:
• Correctly installed, if necessary, by a qualified electrician;
• Correctly grounded (electrically) in accordance with national and local regulations;
• Connected to an electric circuit that is rated for sucient amperage per the ratings label of your
welder.
If you are unsure of any of the above, have your outlet inspected by a qualified electrician before using
the welder.
NOTE:
• Periodically inspect INPUT POWER CABLE (8) for any cracks or exposed wires. If it is not in good
condition, have it repaired by a Service Center.
• Do not cut o the grounding prong or alter the plug in any way and do not use any adapters
between the welder’s INPUT POWER CABLE and the power source receptacle.
• Do not violently pull the INPUT POWER CABLE to disconnect it from power outlet.
• Do not lay material or tools on the INPUT POWER CABLE. The INPUT POWER CABLE may be
damaged and result in electrical shock.
• Keep the INPUT POWER CABLE away from heat sources, oils, solvents or sharp edges.
• Do not use this welder on a circuit with a Ground Fault Circuit Interrupter (GFCI) on it. GFCIs are
tripped by welding arcs and your welding operations will be interrupted regularly.
Installation
Welder Specifications
Site Selection
Power Source Connection
11
Generators
This welder can be operated from an AC generator. Ensure that the generator can supply a minimum
of 4,000 watts of continuous output. The generator must not have an auto-idle fuel saving feature or
must have the option to turn auto-idle o. The generator must run at full speed at all times while your
welder is plugged into it or you risk damaging your welder. Any other power draws on the generator or
anything that reduces the generator RPM may damage your welder.
Extension Cords
For optimum welder performance, an extension cord should not be used unless absolutely necessary.
If necessary, care must be taken in selecting an extension cord appropriate for use with your specific
welder.
Select a properly grounded extension cord that will mate directly with the AC power source receptacle
and the welder INPUT POWER CABLE (8) without the use of adapters. Make certain that the extension
cord is properly wired and in good electrical condition. Extension cords must fit the following wire size
guidelines:
• #12 AWG or larger wire
• Do not use an extension cord over 25 ft. in length.
Since the inhalation of welding fumes can be harmful, ensure that the welding area is eectively
ventilated. See the “Safety Summary” for more details (pages 5-9).
FOR YOUR SAFETY, BEFORE CONNECTING THE POWER SOURCE TO THE LINE
CLOSELY FOLLOW THESE INSTRUCTIONS:
• An adequate two-pole breaker must be inserted before the main outlet. This breaker must be
equipped with time-delay fuses.
• When working in a confined space, the welder must be kept outside the welding area and the
ground cable should be fixed to the workpiece. Never work in a damp or wet confined space.
• Do not use damaged INPUT POWER CABLE (8) or welding cables.
• The welding torch/electrode should never be pointed at the operator or other people.
• The welder must never be operated without its panels attached. This could cause serious injury to
the operator and could damage the equipment.
Ventilation
Additional Warnings
12
Description
Your new single phase inverter welder oers Stick and TIG welding processes in the same power
source. These processes can be selected with the process SELECTOR SWITCH (1) on the front panel of
the unit.
Stick Welding, “SMAW”
Both rutile and basic electrodes can be welded. Welding current is adjusted using the AMPERAGE
ADJUSTMENT KNOB (4).
TIG Welding, “GTAW”
In the TIG position, a TIG torch with a gas valve in the handle is required. The gas valve must be
opened manually before welding and closed manually when welding is completed. The arc is activated
using a lift arc technique. Using the AMPERAGE ADJUSTMENT KNOB, welding current can be
adjusted.
Welder Layout and Controls
1. SELECTOR SWITCH for the welding process selection:
a. STICK (“SMAW”)
STICK
(“SMAW”)
TIG
(“GTAW”)
b. TIG (“GTAW”)
2. INPUT VOLTAGE INDICATOR LED will be illuminated when input voltage to the machine is
present and the ON/OFF SWITCH (11) is in the ON position.
3. FAULT/THERMAL OVERLOAD INDICATOR LED will be illuminated under the following
conditions:
a. The duty cycle of the machine has been exceeded or air flow is blocked. The fan will continue
to run until the machine has cooled, but output power will be disabled. Ensure that the cooling
fan is running and that there are 12 inches of clearance around all vents. When the LED turns
o, welding power will be enabled again.
b. The input voltage is outside of the acceptable range. If this indicator remains illuminated for
more than 10 minutes, it is likely that there is an input voltage problem.
4. AMPERAGE ADJUSTMENT KNOB is used to adjust the following welding parameters:
a. In STICK (“SMAW”) Mode it adjusts welding current (amperage) from 15A to 80A.
b. In TIG, (“GTAW”) Mode it adjusts welding current (amperage) from 10A to 85A.
5. NEGATIVE (-) DINSE SOCKET
6. POSITIVE (+) DINSE SOCKET
7. ON/OFF SWITCH
8. INPUT POWER CABLE
Getting to Know Your Welder
13
1 2
3
4
5
7
6
8
—
+
14
Performance Data Plate and Duty Cycle
On the machine, there is a plate that includes all the operating specifications for your new unit. The
serial number of the product is also found on this plate.
The duty cycle rating of a welder defines how long the operator can weld and how long the welder
must rest and be cooled. Duty cycle is expressed as a percentage of 10 minutes and represents the
maximum welding time allowed. The balance of the 10-minute cycle is required for cooling.
For example, a welder has a duty cycle rating of 30% at the rated output of 90A. This means with that
machine, you can weld at 90 A output for three (3) minutes out of 10 with the remaining seven (7)
minutes required for cooling. The duty cycle of your new welder can be found on the data plate axed
to the machine. It looks like the diagram below. Referring to the sample below, the “X” row lists duty
cycle percentages while the “I
2
” row lists the amp draw corresponding to the duty cycle. Various duty
cycles at other amperages are listed on your data plate.
X 100%
I
2
##A
U
2
##.#V
X 100%
I
2
##A
U
2
##.#V
min #A/min #V – max #A/max #V
Y% Z%
100 ST SER #:
CSA-C22.2 NO 60-M1990
UL551 (8 Ed.)
U
o
=##.#V
##A ##A
##.#V ##.#V
U
1
=120V I
1max
=##.#A I
1eff
=##.#A
min #A/min #V – max #A/max #V
Y% Z%
U
o
=##.#V
##A ##A
##.#V ##.#V
U
1
=120V I
1max
=##.#A I
1eff
=##.#A
IP21S
(Example Data Plate)
If you exceed the duty cycle of the welder, the thermal protection system will engage, shutting o all
welder output. After cooling, the thermal protector will automatically reset and the welding functions
can resume. This is normal and automatic behavior of the machine, and does not require any user
action. However, you should wait at least ten minutes after the thermal protector engages before
resuming welding. You must do this even if the thermal protector resets itself before the ten minutes is
up or you may experience less than specified duty cycle performance.
CAUTION: DO NOT REGULARLY EXCEED THE DUTY CYCLE OR DAMAGE TO THE WELDER
CAN RESULT.
Operation
Internal Thermal Protection
RST100
15
An important factor in making a satisfactory weld is preparation. This includes studying the process
and equipment and practicing welding before attempting to weld finished product. An organized,
safe, ergonomic, comfortable, and well-lit work area should be prepared for the operator. The work
area should specifically be free of all flammables with both a fire extinguisher and a bucket of sand
available.
To properly prepare for welding with your new welder, it is necessary to:
• Read the safety precautions at the front of this manual.
• Prepare an organized, well-lit work area.
• Provide protection for the eyes and skin of the operator and bystanders.
• Attach the ground clamp to the bare metal to be welded, making sure of good contact.
• Plug the machine into a suitable outlet.
• Completely open the gas cylinder valve. Adjust the gas pressure regulator to the correct flow rate.
(Not applicable to Stick “SMAW” process.)
EXPOSURE TO A WELDING ARC IS EXTREMELY HARMFUL TO THE EYES AND SKIN.
PROLONGED EXPOSURE TO A WELDING ARC CAN CAUSE BLINDNESS AND BURNS.
NEVER STRIKE AN ARC OR BEGIN WELDING UNLESS YOU ARE ADEQUATELY
PROTECTED. WEAR FIRE RESISTANT WELDING GLOVES, HEAVY LONG SLEEVED
SHIRT, CUFF-LESS PANTS; HIGH TOPPED SHOES AND A WELDING HELMET.
• Switch the Process SELECTOR SWITCH (1) on the front panel to the left position.
• Check the electrode packaging to determine the recommended polarity and connect the electrode
holder and ground clamp to the POSITIVE (+) and NEGATIVE (-) DINSE SOCKETS (6 and 5)
accordingly.
• Direct current electrode positive (DCEP) or direct current reverse polarity (DCRP): electrode holder
in POSITIVE (+) DINSE SOCKET, ground clamp in NEGATIVE (-) DINSE SOCKET. Most electrodes
use DCEP.
• Direct current electrode negative (DCEN) or direct current straight polarity (DCSP): electrode holder
in NEGATIVE (-) DINSE SOCKET, ground clamp in POSITIVE (+) DINSE SOCKET
• Ensure the ground clamp has a good connection to the workpiece and is connected on clean, bare
metal (not rusty or painted).
• Secure the bare end of the welding electrode in-to the jaws of the electrode holder.
• Switch the unit ON with the ON/OFF SWITCH (7).
• Set the amperage with the AMPERAGE ADJUSTMENT KNOB (4).
Welding Preparation
Setup for Stick Welding (SMAW)
Regulation Knob
Mild Steel
E6010 – – 50-70A 80A
E6011,
E6013,
E6014
30-40A 40-60A 50-70A 70-80A
E7018 – – 70-80A 80A (Dicult)
Stainless Steel E308L – – 40-70A 50-80A
CANNOT WELD ALUMINUM
MATERIAL
(Wire)
ELECTRODE
TYPE
ELECTRODE DIAMETER
1/16” (1.6 mm) 5/64” (2 mm) 3/32” (2.4 mm) 1/8” (3 mm)
STICK PRO 100 STICK SET-UP CHART
16
Setting up the Equipment for TIG Welding (GTAW):
Lanthanated Tungsten 1/16” or 3/32” (MAX) recommended for use.
WARNING: TIG TORCH IS ALWAYS LIVE (ELECTRICALLY HOT). Use caution and ensure the
TIG torch is not in contact with or near conductive or grounded materials.
• Switch the Process SELECTOR SWITCH (1) on the front panel to the right position.
• Connect the TIG torch cable to the NEGATIVE (-) DINSE SOCKET (5) of the welder.
• Connect the ground cable connector to the POSITIVE (+) DINSE SOCKET (6) of the welder.
• Ensure the ground clamp has a good connection to the workpiece and is connected on clean, bare
metal (not rusty or painted).
• Connect the TIG torch gas line to the gas regulator (argon gas only).
THE GAS FLOW IS MANUALLY CONTROLLED WITH THE KNOB ON THE TIG TORCH.
USE INERT GAS (ARGON) ONLY.
TURN ON GAS AT THE GAS REGULATOR, THEN OPEN THE VALVE ON THE TORCH
HANDLE, CHECK FOR GAS FLOW AND ADJUST FLOW RATE AS NEEDED.
• Fix the tungsten electrode so that it protrudes approximately ¼ inch from the torch nozzle.
• Ensure the TIG torch is safely away from all conductive materials.
• Switch the unit ON with the ON/OFF SWITCH (7).
• Set the amperage with the AMPERAGE ADJUSTMENT KNOB (4).
• Open the gas valve on the torch handle.
• Initiate the weld arc with a lift arc technique.
• Close the gas valve on the torch handle after post-weld flow has been completed.
REMEMBER TO CLOSE THE VALVE ON THE GAS CYLINDER IMMEDIATELY AFTER ALL
WELDING IS COMPLETED.
Welding Tips:
• Always weld clean, dry and well-prepared material.
• Move the torch smoothly and steadily as you weld.
• Avoid welding in very drafty areas. A weak, pitted and porous weld will result due to drafts blowing
away the protective welding gas.
• Sharp bends or kinks in the welding cable should be avoided.
• The diameter of the welding electrode should be approximately the same as the thickness of the
metal to be welded.
• The packaging of the welding electrode typically gives a recommended range for the welding
current. Set the amperage accordingly.
Use 100% argon gas when TIG welding with mild steel or stainless steel.
NOTE: THIS MACHINE IS NOT AN APPROPRIATE POWER SOURCE FOR WELDING ALUMINUM.
Setup for TIG Welding (GTAW) with Lift Arc
Gas Selection
Regulation Knob
Mild Steel 100% Argon 1/16” (1.6 mm) 10-15A 15-20A 35-50A 60-80A
CANNOT WELD ALUMINUM
MATERIAL
(Wire)
GAS
TUNGSTEN
ELECTRODE
ø
MATERIAL THICKNESS
22 Gauge
.030” (.8 mm)
16 Gauge
1/16” (1.6 mm) 1/8” (3 mm) 3/16” (5 mm)
STICK PRO 100 TIG SET-UP CHART
17
This welder has been engineered to need minimal service providing that a few very simple steps are
taken to properly maintain it.
1. Replace INPUT POWER CABLE (8), ground cable, ground clamp, or torch/electrode cable when
damaged or worn.
2. Avoid directing grinding particles towards the welder. These conductive particles can build up inside
the machine and cause severe damage.
3. Periodically clean dust, dirt, grease, etc. from your welder. Every six months or as necessary, remove
the side panels from the welder and use compressed air to blow out any dust and dirt that may have
accumulated inside the welder.
WARNING: DISCONNECT FROM POWER SOURCE WHEN CARRYING OUT THIS
OPERATION.
4. Check all cables periodically. They must be in good condition and not cracked.
WARNING: ELECTRIC SHOCK CAN KILL! Be aware that the ON/OFF SWITCH (7), when OFF,
does not remove power from all internal circuitry in the welder. To reduce the risk of electric shock,
always unplug the welder from its AC power source and wait several minutes for electrical energy to
discharge before removing side panels.
The following is a troubleshooting table provided to help you determine a possible
remedy when you are having a problem with your welder.
This table does not provide all possible solutions, only those possibilities considered
likely to be common faults.
PROBLEM POSSIBLE CAUSE POSSIBLE SOLUTION
Neither INDICATOR
LED is illuminated and
nothing works on the
welder.
Machine is not turned ON. Turn machine ON with ON/OFF
SWITCH (7).
No input power present. Make sure machine is plugged in.
Verify that circuit breaker has not
been tripped. Reset if needed.
Verify output power from the outlet.
Do not use the machine on a GFI
outlet.
Both INDICATOR LEDS
are illuminated and there
is no output power from
the welder.
Exceeded duty cycle; thermal
protector engaged.
Allow welder to cool at least 10
minutes with machine ON (observe
and maintain proper duty cycle).
FAULT/THERMAL OVERLOAD
INDICATOR LED (3) should turn o
after the machine has cooled.
Insucient air flow causing machine
to overheat before reaching duty
cycle.
Check for obstructions blocking air
flow and ensure that there are 12
inches of clearance between any
obstacles and the vents on all sides of
the machine.
Incorrect voltage supplied to welder. Check the voltage of your outlet. If it
is 10% more or less than 120V, call a
qualified electrician.
Maintenance & Servicing
General Maintenance
Troubleshooting
18
PROBLEM POSSIBLE CAUSE POSSIBLE SOLUTION
Low output or non-
penetrating weld.
Weld parameters too low. Adjust welding parameters
Too long or improper extension cord. Use a proper extension cord (#12
AWG wire or heavier, no longer than
25 ft.). See “Extension Cords”, page 11.
Poor ground connection or torch/
electrode connection.
Reposition clamp and check cable to
clamp connection.
Check connection of ground cable,
torch or electrode holder
Input power too low. Have a qualified electrician verify the
voltage at your outlet. If the voltage
is appropriate, verify that the circuit
wiring is sucient for 20A.
Ground clamp, ground
cable, and/or welding
cable get hot.
Bad ground or loose ground
connection.
Check connection of ground cable,
torch or electrode holder.
Check connection of the ground
cable to the ground clamp. Tighten
cable connection to ground clamp if
needed.
Ensure the connection between the
ground clamp and workpiece is good
and on clean, bare (not painted or
rusted) metal.
Frequent circuit breaker
trips.
Machine is not the only piece of
electrical equipment on the circuit.
Make sure the welder is on a
dedicated circuit or is the only thing
plugged on a circuit.
Circuit breaker is incorrect/insucient
for use with this machine.
Verify that the circuit breaker for the
circuit is a 20A time-delay (slow-blow)
breaker. If it is not, have a qualified
electrician install the proper breakers.
Poor quality welds.
Insucient gas at weld area. Check that the gas is not being blown
away by drafts and, if so, move to
a more sheltered weld area. If not,
check gas cylinder contents, gauge,
regulator setting, and operation of
gas valve.
Rusty, painted, oily or greasy
workpiece.
Ensure workpiece is clean and dry.
Poor ground connection or torch/
electrode connection.
Check ground clamp/workpiece
connection and all connections to the
machine.
Dicult arc start. Amperage is too low. Increase amperage setting.
Arc is wandering (TIG). Tungsten is too large. Use a smaller tungsten.
19
NO.
PART
NUMBER
ITEM DESCRIPTION
1
- Ground (25 Dinse)
2
- Electrode Holder (25 Dinse)
Machine Parts Diagram & Replacement Parts List
1
2
20
NO.
PART
NUMBER
ITEM DESCRIPTION ITEM PHOTO
1 RT-200-9FV Tig Torch (9FV)
TIG Torch & TIG Consumables List (SOLD SEPARATELY)
21
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User Notes
Distributed by:
Ursa Resource Management, LLC
112 North Curry St., Carson City, NV, 89703, USA
RIDGID is a registered trademark of RIDGID Inc. and used under license.
1-800-4-RIDGID
RIDGID.com
RST100
STICK PRO 100
