CARBONE DIGI-CUT70 User manual

DIGI-CUT70(CNC) IGBT INVERTER
AIR PLASMA
CUTTING MACHINE
(Suitable for 1x220V)
Operators’s Manual
Safety, Setup and General Use Guide
REV.2 0 00145-16
Issue Date: May. 12, 2016
Manual No.: 0-1535
EMPRESAS CARBONE S.A.
Calle 5ta. Rio Abajo, Panamá, Panamá
Telefonos: (507) 3916309 / 3916313
www.empresascarbone.com

Dear Customer,
Thank you for selecting the our machine. We appreciate you as a customer and hope that you
will enjoy years of use from your welder.
Please go directly to the our website to register your unit and receive your warranty information. Your
unit registration is important should any information such as product updates or re-calls be issued. It is also
important so that we may track your satisfaction with our products and services. If you are unable to register
by website, contact our directly through the sales department through the main customer service number in
your country. Your unit will be registered and warranty will be issued and in full effect. Keep all information
regarding your purchase. In the event of a problem you must contact technical support before your
welder can be a candidate for warranty service and returned.
Please review the current online warranty statement and information found on the website of the
our division located in or nearest to your country. Print it for your records and become familiar of its
terms and conditions.
We offers full technical support, in several different forms. We have online support available through
email, and a welding support forum designed for customers and noncustomer interaction. Technical advisors
are active on the forum daily. We also divide our support into two divisions: technical and welding
performance. Should you have an issue or question concerning your unit, please contact performance/
technical support available through the main company headquarters available in your country. For best
service call the appropriate support line and follow up with an email, particularly if off hours, or you cannot
reach a live person. In the event you do not reach a live person, particularly during heavy call volume times,
holidays, and off hours, leave a message and your call will normally be returned within 24 hours. Also for
quick answers to your basic questions, join the company owned forum available through the website.
Should you need to call or write, always know your model name, purchase date and welder manu-
facturing inspection date. This will assure the quick and accurate customer service. REMEMBER: Be as
specific and informed as possible. Technical and performance advisors rely upon you to carefully
describe the conditions and circumstances of your problem or question. Take notes of any issues
as best you can. You may be asked many questions by the advisors to clarify prob-lems or issues
that may seem very basic. However, diagnosis procedures MUST be followed to begin the warranty
process. Advisors can't assume anything, even with experienced users, and must cover all aspects
to properly diagnose the problem. Depending upon your issue, it is advisa-ble to have basic tools
handy such as screwdrivers, wrenches, pliers, and even an inexpensive test meter with volt/ohm
functions before you call.
Let us know how we may be of service to you should you have any questions.

We want you to take pride in operating our machine as much pride as we have taken in making this
product for you. Please read all information in this manual before operation
PLEASE EXAMINE CARTON AND EQUIPMENT FOR DAMAGE IMMEDIATELY
When this equipment is shipped, title passes to the purchaser upon receipt from the courier. Consequently
all claims for material damaged in shipment must be made by purchaser against the transportation company
used.
Please record your equipment identification below for future reference. This information can be
found on data plate at rear of machine.
：
Product DIGI-CUT70(CNC)
Serial No. ___________________________________
Date of Purchase _____________________________
Where Purchased _____________________________
Whenever you request replacement parts or information on this equipment please always supply information
you have recorded above
This product is covered by 1 years parts and labour warranty, you are responsible for costs of shipping unit
to us, we will cover cost of returning item to you. External items, torch, earth lead etc are covered by 3
months warranty. Any faults/damage found caused by customer will be charged prorata.
Pay particular attention to the safety instructions we have provided you for your protection The level of
seriousness to be applied to each section is explained below
WARNING
This statement appears where the information must be followed exactly to avoid serious personal injury.
CAUTION
This statement appears where the information must be following to avoid a minor personal injury or damage
to this equipment.

We are dedicated to providing you with the best possible equipment and service to meet the demanding
jobs that you have. We want to go beyond delivering a satisfactory product to you. That is the reason we
offer technical support to assist you with your needs should an occasion occur. With proper use and care
your product should deliver years of trouble free service.
Safe operation and proper maintenance is your responsibility.
We have compiled this operator's manual, to instruct you in basic safety, operation and maintenance of
our product to give you the best possible experience. Much of welding and cutting is based upon
experience and com-mon sense. As thorough as this welding manual may be, it is no substitute for either.
Exercise extreme caution and care in all activities related to welding or cutting. Your safety, health and even
life depends upon it. While accidents are never planned, preventing an accident requires careful planning.
Please carefully read this manual before you operate machine.
This manual is not only for the use
of the machine, but to assist in obtaining the best performance out of your unit. Do not operate the unit
until you have read this manual and you are thoroughly familiar with the safe operation of the unit. If you feel
you need more information please contact our Support.
The warranty does not cover improper use, maintenance or consumables. Do not attempt to alter or
defeat any piece or part of your unit, particularly any safety device. Keep all shields and covers in
place during unit operation should an unlikely failure of internal components result in the possible presence
of sparks and explosions. If a failure occurs, discontinue further use until mal-functioning parts or
accessories have been repaired or replaced by qualified personnel.
Note on High Frequency electromagnetic disturbances:
Certain welding and cutting processes generate High Frequency (HF) waves. These
waves may disturb sensitive electronic equipment such as televisions, radios, computers, cell
phones, and related equipment. High Frequency may also interfere with fluorescent lights.
Consult with an electrician if disturb-ance is noted. Sometimes, improper wire routing or poor
shielding may be the cause.
HF can interfere with pacemakers.See EMF warnings in following safety sec-tion for
further information. Always consult your physician before entering an area known to have
welding or cutting equipment if you have a pacemaker.
MOVING PARTS can cause injury.
Moving parts, such as fans, rotors, and belts can cut fingers and hands and catch loose
clothing.
Do not put your hands near the engine fan. Do not attempt to override the governor or idler by
pushing on the throttle control rods while the engine is running.
SAFETY PRECAUTIONS

These safety precautions are for protection of safety and health. Failure to follow these
guidelines may result in serious injury or death. Be careful to read and follow all cautions and
warnings. Protect yourself and others.
Welding and cutting processes produce high levels of ultraviolet (UV) radiation that can
cause severe skin burn and damage.There are other potential hazards involved with welding
such as severe burns and respiratory related illnesses. Therefore ob-serve the following to
minimize potential accidents and injury:
Use appropriate safety glasses with wrap around shields while in the work area, even
under welding helmets to protect your eyes from flying sparks and debris.When chip-ping
slag or grinding, goggles and face shields may be required.
When welding or cutting, always use an approved shielding device, with the correct
shade of filter installed. Always use a welding helmet in good condition. Discard any broken
or cracked filters or helmets. Using broken or cracked filters or helmets can cause severe eye
injury and burn. Filter shades of no less than shade 5 for cutting and no less than shade 9 for
welding are highly recommended. Shades greater than 9 may be required for high amperage
welds. Keep filter lenses clean and clear for maxi-mum visibility. It is also advisable to consult with your eye
doctor should you wear contacts for corrective vision before you wear them while welding.
Do not allow personnel to watch or observe the welding or cutting operation unless fully
protected by a filter screen, protective curtains or equivalent .protective equip-ment. If no
protection is available, exclude them from the work area. Even brief expo-sure to the rays from
the welding arc can damage unprotected eyes.
Always wear hearing protection because welding and cutting can be extremely noisy. E
ar protection is necessary to prevent hearing loss. Even prolonged low levels of noise has
been known to create long term hearing damage. Hearing protection also further protects
against hot sparks and debris from entering the ear canal and doing harm.
Always wear personal protective clothing. Flame proof clothing is required at all times.
Sparks and hot metal can lodge in pockets, hems and cuffs. Make sure loose clothing is tucked
in neatly. Leather aprons and jackets are recommended. Suitable welding jackets and coats
may be purchased made from fire proof material from welding supply stores. Discard any
burned or frayed clothing. Keep clothing away from oil, grease and flammable liquids.
Leather boots or steel toed leather boots with rubber bottoms are required for ade-quate
foot protection. Canvas, polyester and other man made materials often found in shoes will
either burn or melt. Rubber or other non conductive soles are necessary to help protect from
electrical shock.
Flame proof and insulated gauntlet gloves are required whether welding or cutting or
handling metal. Simple work gloves for the garden or chore work are not sufficient. Gauntlet
type welding gloves are available from your local welding supply companies. Never attempt to
weld with out gloves. Welding with out gloves can result in serious burns and electrical shock.
If your hand or body parts comes into contact with the arc of a plasma cutter or welder, instant
and serious burns will occur. Proper hand protection is required at all times when working
with welding or cutting machines!
SAFETY PRECAUTIONS

WARNING! Persons with pacemakers should not weld, cut or be in the welding area
until they consult with their physician. Some pacemakers are sensitive to EMF radiation and
could severely malfunction while welding or while being in the vicinity of someone welding.
Serious injury or death may occur!
Welding and plasma cutting processes generate electro-magnetic fields and
radiation. While the effects of EMF radiation are not known, it is suspected that there may be
some harm from long term exposure to electromagnetic fields. Therefore, certain pre-cautions
should be taken to minimize exposure:
* Lay welding leads and lines neatly away from the body.
* Never coil cables around the body.
* Secure cables with tape if necessary to keep from the body.
* Keep all cables and leads on the same side the body.
* Never stand between cables or leads.
* Keep as far away from the power source (welder) as possible while welding.
* Never stand between the ground clamp and the torch.
* Keep the ground clamp grounded as close to the weld or cut as possible.
Welding and cutting processes pose certain inhalation risks. Be sure to follow any
guidelines from your chosen consumable and electrode suppliers regarding possible need for
respiratory equipment while welding or cutting. Always weld with adequate ventilation. Never weld
in closed rooms or confined spaces. Fumes and gases re-leased while welding or cutting may be
poisonous. Take precautions at all times.
Any burning of the eyes, nose or throat are signs that you need to increase ventilation.
* Stop immediately and relocate work if necessary until adequate ventilation is ob-tained.
* Stop work completely and seek medical help if irritation and discomfort persists.
WARNING! Do not weld on galvanized steel, stainless steel, beryllium, titanium, cop-per,
cadmium, lead or zinc without proper respiratory equipment and or ventilation.
WARNING! This product when used for welding or cutting produces fumes and gas-es
which contains chemicals known to the State of California to cause birth defects and in some
§
cases cancer. (California Safety and Health Code 25249.5 et seq.)
WARNING! Do not weld or cut around Chlorinated solvents or degreasing areas. Release
of Phosgene gas can be deadly. Consider all chemicals to have potential deadly results if welded
on or near metal containing residual amounts of chemicals.
Keep all cylinders upright and chained to a wall or appropriate holding pen. Certain
regulations regarding high pressure cylinders can be obtained from OSHA or local regulatory
agency. Consult also with your welding supply company in your area for further recommendations.
The regulatory changes are frequent so keep informed.
All cylinders have a potential explosion hazard. When not in use, keep capped and closed.
Store chained so that overturn is not likely. Transporting cylinders incorrectly can lead to an
explosion. Do not attempt to adapt regulators to fit cylinders. Do not use faulty regulators. Do
not allow cylinders to come into contact with work piece or work. Do not weld or strike arcs on
cylinders. Keep cylinders away from direct heat, flame and sparks.
SAFETY PRECAUTIONS

WARNING! Electrical shock can kill. Make sure all electrical equipment is properly
grounded. Do not use frayed, cut or otherwise damaged cables and leads. Do not stand, lean
or rest on ground clamp. Do not stand in water or damp areas while weld-ing or cutting. Keep
work surface dry. Do not use welder or plasma cutter in the rain or in extremely humid
conditions. Use dry rubber soled shoes and dry gloves when welding or cutting to insulate
against electrical shock. Turn machine on or off only with gloved hand. Keep all parts of the
body insulated from work, and work tables. Keep away from direct contact with skin against
work. If tight or close quarters ne-cessitates standing or resting on work piece, insulate with
dry boards and rubber mats designed to insulate the body from direct contact.
All work cables, leads, and hoses pose trip hazards. Be aware of their location and
make sure all personnel in area are advised of their location. Taping or securing ca-bles with
appropriate restraints can help reduce trips and falls.
WARNING! Fire and explosions are real risks while welding or cutting. Always keep
fire extinguishers close by and additionally a water hose or bucket of sand. Periodi-cally check
work area for smoldering embers or smoke. It is a good idea to have someone help watch for
possible fires while you are welding. Sparks and hot metal may travel a long distance. They
may go into cracks in walls and floors and start a fire that would not be immediately visible.
Here are some things you can do to reduce the possibility of fire or explosion:
* Keep all combustible materials including rags and spare clothing away from area.
* Keep all flammable fuels and liquids stored separately from work area.
* Visually inspect work area when job is completed for the slightest traces of smoke or embers.
* If welding or cutting outside, make sure you are in a cleared off area, free from dry tender and
debris that might start a forest or grass fire.
* Do not weld on tanks, drums or barrels that are closed, pressurized or anything that held
flammable liquid or material.
Metal is hot after welding or cutting! Always use gloves and or tongs when handling hot
pieces of metal. Remember to place hot metal on fire-proof surfaces after han-dling. Serious
burns and injury can result if material is improperly handled.
WARNING! Faulty or poorly maintained equipment can cause injury or death. Prop-
er maintenance is your responsibility. Make sure all equipment is properly maintained and
serviced by qualified personnel. Do not abuse or misuse equipment.
Keep all covers in place. A faulty machine may shoot sparks or may have exploding parts.
Touching uncovered parts inside machine can cause discharge of high amounts of electricity.
Do not allow employees to operate poorly serviced equipment. Always check
condition of equipment thoroughly before start up. Disconnect unit from power source before
any service attempt is made and for long term storage or electrical storms.
Further information can be obtained from The American Welding Society (AWS) that
relates directly to safe welding and plasma cutting. Additionally, your local welding supply
company may have additional pamphlets available concerning their products. Do not operate
machinery until your are comfortable with proper operation and are able to assume inherent
risks of cutting or welding.
SAFETY PRECAUTIONS

TABLEOFCONTENTS
Page
SAFETY PRECAUTIONS................................................. .
Installation.....................................................Section A
Technical Specifications...............................................A-1
Output Amps %duty cycle ...............................................A-2
Select Suitable Location...............................................A-3
Stacking ..............................................................A-3
TRANSPORT - UNLOADING ............................................A-3
Tilting. ..............................................................A-3
Environmental Area ....................................................A-3
Machine Grounding and High Frequency Interference Protection .........A-4
Input Connections ...................................................A-4
Reconnect Procedure....................................................A-5
220/230/240V Input.....................................................A-5
Attachment Plug Installation, Engine Driven Generator..................A-5
Output Connections.....................................................A-6
Work Cable Connection .................................................A-6
Operation.......................................................Section B
Safety precautions.....................................................B-1
Product Description....................................................B-2
Cutting Capability.....................................................B-2
Control Panel .....................................................B-4
Cutting in cut mode .................................................B-7
Maintenance .....................................................Section C
Safety Precautions ....................................................C-1
Routine and periodic Maintenance.......................................C-1
Troubleshooting .................................................Section D
How to Use Troubleshooting Guide ......................................D-1
Input Filter Capacitor Discharge Procedure ............................D-1
Troubleshooting Guide......................................... D-2
Wiring Diagram...................................................Section E
Main circuit wiring Diagram............................................E-1
CNC Connector Pin-Out......................... ........................E-2
Accessories......................................................Section F
Parts Lists(COMPONENT LISTS)..................................... Appendix

A-1 INSTALLATION A-1
TECHNICAL SPECIFICATIONS -
max. rated Output Amps @% Duty Cycle (Based on a 10 minute cycle) (Example; 70A@60% for CUT )
MODEL DIGI-CUT70(CNC)
Power Voltage 1 x 220 V± 10%;50/60Hz
Fuse rating 60A
Input Current 58A
Rated Output Current 70A
Current .Adjusting Range 20-70A
No-load Voltage 250V
Rated Duty Cycle 60%
Working Mode Contacting/notContacting
Air Pressure 0.2-0.4MPa
Cutting Thickness 28mm
After Flow Time 10S

A-2 INSTALLATION A-2
Chart gives max. rated Output Amps @% Duty Cycle (Based on a 10 minute cycle) (Example; 70A@60% for
CUT )
(1)
Wiring and protection based on the IEC60974.1 National Electric Code: Use a Super Lag type fuse or circuit
breaker with a delay in tripping action. Models with NEMA 6-50P plug may be used with a 50 amp protected
6-50R receptacle, or with a maximum 70 amp protected 6-50R receptacle if dedicated for the welder.
30 40 50 60 70 80 90 100
100%
90%
80%
70%
60%
50%
40%
30%
20%
10%
0
OUTPUT AMPS
OUTPUT AMPS %DUTY CYCLE
Using standard input cable for protected input supply

A-3 INSTALLATION A-3
SAFETY PRECAUTIONS
Read entire installation section before starting installation.
ELECTRIC SHOCK can kill.
·Only qualified personnel should
perform this installation.
·Turn the input power OFF at the
disconnect switch or fuse box
before working on this equipment.
·Do not touch electrically hot parts.
·Always connect the MACHINE to a power
supply grounded per the National Electrical
Code and any local codes.
SELECT SUITABLE LOCATION
Place the welder where clean cooling air can freely
circulate in and out through the rear louvers. Dirt,
dust or any foreign material that can be drawn into
the welder should be kept at a minimum. Failure to
observe these precautions can result in excessive
operating temperatures and nuisance shut-downs.
GRINDING
Do not direct grinding particles towards the welder.
An abundance of conductive material can cause
maintenance problems.
STACKING
The machine cannot be stacked.
TRANSPORT - UNLOADING
Never underestimate the weight of the
equipment.
Never make the cargo pass or leave it
suspended over people or things.
Neither let the equipment or the single unit fall,
nor put it down with force.
Once it has been removed from the packing, the
power source can be used to move it in the
hand or on the shoulder.
Never lift welder with gas cylinder attached.
Never lift welder above personnel.
TILTING
Each machine must be placed on a secure, level
surface, either directly or on a recommended
undercarriage. The machine may topple over if this
procedure is not followed. 10o
ENVIRONMENTAL RATING
The welding machine power source carries an
IP21s environmental rating. It may be used in
normal industrial and commercial environments.
Avoid using it in environments which have falling
water such as rain.
Read and follow "Electric Shock Warnings" in the
Safety section if welding must be performed under
electrically hazardous conditions such as welding in
wet areas or on or in the workpiece.
FALLING
EQUIPMENT
cause injury
PLASMA ARC
can injure
Keep your body away from nozzle and
plasma arc
Operate the pilot arc with cation. The
pilot arc is capable of burning the
operator,others even piercing safety
clothing

A-4 INSTALLATION A-4
MACHINE GROUNDING AND HIGH
FREQUENCY INTERFERENCE
PROTECTION
This welder must be grounded! See your local and
national electrical codes for proper grounding
methods.
The high frequency generator, being similar to a
radio transmitter, may cause radio, TV and
electronic equipment interference problems. These
problems may be the result of radiated interference.
Proper grounding methods can reduce or eliminate
radiated interference.
Radiated interference can develop in the following
four ways:
1 Direct interference radiated from the welder.
2 Direct interference radiated from the welding
leads.
3 Direct interference radiated from feedback into the
power lines.
4 Interference from re-radiation of "pickup" by
ungrounded metallic objects.
Keeping these contributing factors in mind, installing
equipment per the following instructions should
minimize problems.
1 Keep the welder power supply lines as short as
possible and enclose as much of them as possible
in rigid metallic conduit or equivalent shielding for a
distance of 50 feet (15.2m). There should be good
electrical contact between this conduit and the
welder case ground. Both ends of the conduit
should be connected to a driven ground and the
entire length should be continuous.
2 Keep the work and electrode leads as short as
possible and as close together as possible. Lengths
should not exceed 25 ft (7.6m). Tape the leads
together when practical.
3 Be sure the torch and work cable rubber
coverings are free of cuts and cracks that allow high
frequency leakage.
4 Keep the torch in good repair and all connections
tight to reduce high frequency leakage.
5 The work piece must be connected to an earth
ground close to the work clamp, using one of the
following methods:
a) A metal underground water pipe in direct contact
with the earth for ten feet or more.
b) A 3/4" (19mm) galvanized pipe or a 5/8"
(16mm)solid galvanized iron, steel or copper rod
driven at least eight feet into the ground.
The ground should be securely made and the
grounding cable should be as short as possible
using cable of the same size as the work cable, or
larger. Grounding to the building frame electrical
conduit or along pipe system can result in
reradiation, effectively making these members
radiating antennas.
6 Keep cover and all screws securely in place.
7 Electrical conductors within 50 ft (15.2m) of the
welder should be enclosed in grounded rigid
metallic conduit or equivalent shielding, wherever
possible. Flexible metallic conduit is generally not
suitable.
8 When the welder is enclosed in a metal building,
the metal building should be connected to several
good earth driven electrical grounds (as in 5 (b)
above) around the periphery of the building.
Failure to observe these recommended installation
procedures can cause radio or TV and electronic
equipment interference problems and result in
unsatisfactory welding performance resulting from
lost high frequency power.
INPUT CONNECTIONS
Be sure the voltage, phase, and frequency of the
input power is as specified on the rating plate,
located on the rear of the machine.
Have a qualified electrician provide input power
supply to the receptacle or cord in accordance with
all local and national electrical codes. Use a single
phase line or one phase of a two or three phase
line.
Choose an input and grounding wire size according
to local or national codes. Refer to the Technical
Specifications page at the beginning of this section.
Fuse the input circuit with the recommended super
lag fuses or delay type circuit breakers.

A-5 INSTALLATION A-5
Using fuses or circuit breakers smaller than
recommended may result in "nuisance" shut-off
from welder inrush currents even if not welding at
high currents.
1Also called "inverse time" or "thermal/magnetic" circuit
breakers; circuit breakers which have a delay in tripping action
that decreases as the magnitude of the current increases.
INPUT RECONNECT PROCEDURE
On multiple input voltage welders, be sure the
machine is connected per the following instructions
for the voltage being supplied to the welder.
Failure to follow these instructions can cause
immediate failure of components within the welder
and void machine's warranty.
Multiple voltage models are shipped connected for
the highest voltage. To change this connection refer
to the following instructions.
ELECTRIC SHOCK can kill.
Turn the input power OFF at the
disconnect switch or fuse box
before working on this equipment.
. Have a qualified electrician
install and service this
equipment.
. Turn the input power OFF and unplug the
machine from the receptacle
before working on this equipment.
. Allow machine to sit for 5 minutes minimum to
allow the power capacitors to discharge before
working inside this equipment.
. Do not touch electrically hot parts.
. Machine must be plugged into a receptacle
that is grounded according to the National
Electrical Code and local codes.
. Do not remove or defeat the purpose of the
power cord ground pin.
RECONNECT PROCEDURE
The Inverter machine auto reconnects to either
115V or 230V supply.
Fuse the input circuit with time delay fuses or delay
type1 circuit breakers. Using fuses or circuit
breakers smaller than recommended may result in
“nuisance”shut-offs from welder inrush currents
even if not welding at high currents.
The Inverter machine is recommended for use on
an individual branch circuit.
1Also called“inverse time”or“thermal/magnetic”
circuit breakers.
These circuit breakers have a delay in tripping
action that decreases as the magnitude of the
current increases.
220/230/240V INPUT
The equipment is provided with a 230 cable,
6.6ft.(2m) in length with a 230V 6-50P attachment
plug.
ATTACHMENT PLUG INSTALLATION
Connect the white (neutral) wire under terminal
clamp with silver screw, and black (hot) wire under
terminal clamp with brass screw. Connect green
wire under terminal clamp with green screw.
. Failure to wire as instructed may cause
personal injury or damage to equipment.
To be installed or checked by an
electrician or qualified person only.
In all cases, the green or green/yellow grounding
wire must be connected to the grounding pin of the
plug, usually identified by a green screw.
Attachment plugs must comply with the Standard
for Attachment Plugs and Receptacles,.
The product is considered acceptable for use only
when an attachment plug as specified is properly
attached to the supply cord.
For use on engine drives, keep in mind the above
input draw restrictions and the following precaution.

A-6 INSTALLATION A-6
ENGINE DRIVEN GENERATOR
The Inverter machine can be operated on engine
driven generators as long as the 220/230/240 volt
auxiliary meets the following conditions:
. The AC waveform peak voltage is below 400 volts.
. The AC waveform frequency is between 45 and
65Hz.
The following Lincoln engine drives meet these
conditions when run in the high idle mode:
●Ranger 250,305 ●. Commander 300, 400, & 500
Some engine drives do not meet these conditions
(e.g. Miller Bobcats, etc). Operation of the Inverter
machine is not recommended on engine drives not
conforming to these conditions. Such drives may
deliver unacceptably high voltage levels to the
Inverter machine power source.
The available output current of the Pro-Cut 80 may
belimited due to the output capacity of the engine
drivenpower supply. The following are
recommended outputcurrent settings when used
with various Lincolnengine driven power supplies.
CONNECTIONS FOR CUTTING
WORK CABLE CONNECTION
Next, connect the work cable to the “+”output
terminal in the same way.
To minimize high frequency interference, refer to
Machine Grounding and High Frequency
Interference Protection section of this manual for
the proper procedure on grounding the work clamp
and work piece.
CYLINDER could explode if damaged.
Keep cylinder upright and
chained to a support.
Keep cylinder away from areas
where it could be damaged.
Never allow the torch to touch the
cylinder.
Keep cylinder away from live electrical circuits.
Maximum inlet pressure 150 psi.
A cylinder is loaded by leaning it slightly sideways
and rocking it up on the platform, being careful not
to allow the Under-Storage Cart to roll. Secure the
cylinder in place with the provided chain. Unload by
following these steps in reverse.

B-1 OPERATION B-1
Read and understand this entire section
before operating the machine.
SAFETY PRECAUTIONS
ELECTRIC SHOCK can kill.
· Do not touch electrically
live parts or electrode with
skin or wet clothing.
· Insulate yourself from
work and ground.
· Always wear dry insulating gloves.
Read and follow "Electric Shock Warnings" in the
Safety section if welding must be performed under
electrically hazardous conditions such as welding in
wet areas or on or in the workpiece.
FUMES AND GASES can be dangerous.
· Keep your head out of
fumes.
· Use ventilation or exhaust
at the arc, or both, to remove
fumes and gases from breathing zone
and general area.
CUTTING SPARKS can cause fire or
explosion
· Keep flammable material
away.
· Do not weld on containers
that have held combustibles.
ARC RAYS can burn.
Wear eye, ear and body
protection.
Only qualified personnel
should operate this equipment. Observe
additional Safety Guidelines detailed in
the beginning of this manual.

B-2 OPERATION B-2
PRODUCT DESCRIPTION
The new, redesigned DIGI-CUT70 are non high
frequency start machines. The “blow-back” type
start that they use is safe for use in CNC
applications and is ideal for general use. The
elimination of the HF points within the unit also
improves reliability and removes the need for
regular HF point gap maintenance. Blow-back
type start involves a rear-ward movement of
the electrode within the torch head when forced by
the air pressure. When air pressure is applied the
movement of the electrode off its seated position
against the inner surface of the circuit grounded
nozzle creates a spark, energizing the plasma
stream. This type start means that it has a pilot
arc design so that cutting can be done on any metal
surface without having to contact to strike an arc
and is ideal for cutting items like expanded metal or
uneven surfaces. There are several other key
features on the PowerPlasma :
A. IGBT construction is designed to improve
reliability while make servicing a unit quicker,
and more cost efficient. Using mostly non
proprietary components ensures long term
serviceability.
B. OK-to-Cut light stays lit while the plasma
cutter is within the minimum limits needed for
the torch to function without burning up. If the
light goes out an automatic override kicks in
and shuts down the unit until the air pressure
is back to a sustainable level. Minimum air
pressure is set at about 35 psi, which is not
ideal, but will prevent premature torch failure.
RECOMMENDED PROCESSES AND
EQUIPMENT
RECOMMENDED PROCESSES
General Use and Care :ThePlasmacutteris
designedforuseinmanyindustrialenvironments
suchasshipyards,fabricationshopsandpipelines.
However,careshouldbetakentokeeptheunit
outofdirectcontactwithwaterspray.Theunitis
ratedIP21S,whichratesitforlightcontactwith
drippingwater.Itisagoodideatoremovethe
welderfromthevicinityofanywaterormoisture
sourcetoreducethepossibilityofelectrocutionor
shock.Neveroperateinstandingwater.Thisunit
hasahighOpencircuitvoltagefurther
necessitatingsafeoperatingpractices.Useonlyin
aprotected/shelteredareawhileconnectedtoa
CNCwatertable.Theoperatorshouldbecarefulto
preventsplashing/sprayingwaterinthedirection
oftheplasmacutter.Every1‐2months,depending
uponuse,theweldershouldbeunplugged,
openedupandcarefullycleanedwithdry,
compressedair.Regularmaintenancewillextend
thelifeoftheunit.
IMPORTANT: Before opening the unit for
any reason,make sure the unit has been
unplugged for at least 10 minutes to allow
time for the capacitors to fully discharge.
Severe shock and/or death can occur.
Donotrestrictairflowormovementofairaround
theplasmacutter.Allowabufferdistanceof2ft.
fromallsidesifpossible,withaminimumdistance
ofatleast18”clearance.Donotdirectmetallic
dustoranydirtintentionallytowardthemachine,
particularlyingrindingandcuttingoperations.
Makesurethepanelisprotectedfromdamage
duringweldingandcuttingoperationsbyflipping
downtheclearprotectivecover.
RECOMMENDED QUIPMENT/INTERFACE
(See Installed Options in Accessories Section for
more details)
The Plasmacutter will be available as a basic
Machine (Only) and in Factory Basic module will
also be available as with Domestic,.
(SEE PACKING LIST,PLEASE)
CUTTING CAPABILITY(Duty Cycle)
The Plasmacutter is rated at 70 amps, 98 volts,
at 60% duty cycle on a ten minute basis. It is
capable of higher duty cycles at lower output
currents. See rated output graph, on specification
sheet located in the Installation Section. If the duty
cycle is exceeded, a thermal protector will shut off
the output until the machine cools.

B-3 OPERATION B-3
Figure B.1 shows the cut capacity of the DIGI-CUT70 when cutting mild steel. The graph plots
cut thickness vs.torch travel speed with a torch standoff of 0.15"(3.8mm). Example:
0.5”(12.7mm) material may be cut at a setting of 55 amps at an approximate speed of
25”/m(635mm/m) or at a setting of 70 amps at an approximate speed of35”/m(889mm/m).
Figure B.1
CONSUMABLE LIFE
The expected life for the DIGI-CUT70’s electrode under normal conditions is approximately 30
to 40 minutes ofcutting time at the machine’s maximum rated output. An erosion of
approximately 1/16" in the electrode tip is typical for the end of electrode life, however, the
electrode may last longer. A sustained green and erratic arc willindicate definite electrode
failure and both the electrode and nozzle should be replaced immediately.
It is recommended that consumables (electrode and nozzle) be replaced in complete sets.
This will maximize theperformance of the DIGI-CUT system.

B-4 OPERATION B-4
CONTROLS AND SETTINGS
All operator controls and adjustments are located on the case front of the TIG machine. Refer to Figure B.1
and the corresponding explanations.
FIGURE B.1 CONTROL PANEL
1. FRONT PANEL 2. BACK PANEL
1. indication of cutting current 2.power
indication 3. warning indication
4. cutting/testing gas switch
5. cutting current regulator
6. Central Torch Connector
8. workpiece cable 9. nameplate
10. air pressure-reduced valve
11. pressure air entrance 12. fan
13. indication of air pressure-reduced
valve
14. grounding column 15. input cable
16,power switch 17.indication of over heat
18. indication of PSI OK TO CUT
（minimum）
19.fuse 20A 20.CNC
CONTROL FUNCTIONALITY
1 DIGITAL METER - A 3 digit LED meter is
used to display the preset output current level
before welding, and actual output level while
welding: A lit display indicates input power is turned
on.
2.power indication
Turn power on, it will illuminate indicating.
3. warning indication
output current is too high or the machine fails.
4. cutting/testing gas switch
Select “Test” to set air flow/air pressure for the torch.
The operating pressure should always be set while
this is in Test since it does not require the torch to
be live. This allows the air to flow constantly until
the switch is placed back into the normal, timed
mode. To set the air pressure, turn the torch until
the nozzle is facing up, then place the flow tube
(clear plastic tube with ball in it) over the nozzle.
Select “Test” on the machine. With the air flowing,
adjust the air pressure/flow
up or down until the ball is floating in the sight
window of the flow tube. If no flow tube is present or
provided with your unit, then simply set the air
pressure while “Test” is selected until it is
somewhere between 70-75 psi. Pressure over or
under this can result in an unstable arc.
5. cutting current regulator
Displays selected amperage until cut starts. Once
cut starts, then amps display dynamically by
displaying the actual output amps while cutting.
While Pilot arc is engaged or when cut starts, the
amps will drop to 20-30 amps until continuity is
sensed and cutting arc takes over and the pilot arc
disengages. Pilot arc is not designed to Cut. It only
serves to scour the surface to gain continuity so that
the cutting arc can engage.
6. Central Torch Connector
The central torch connector is an all-in-one
connector. This is a universal style connection
which allows greater interchangeability of torches. It
also greatly simplifies torch connection. When
installing the connector, line up the tab on the male
piece with the slot on the connector on the machine
side connector. Insert the coupling fully and then
tighten the collar nut on the torch fitting hand tight.
Do not use tools.
8. Work Piece Connector
The work lead (sometimes referred to as “ground”)
is used to complete the circuit. The torch pilot arc
may activate, but the unit will not actually cut if the
work lead is not connected to the work piece. If an
arc is present but the unit will not easily cut or is
very slow or poor cutting any material, check and
make sure work lead is connected and is connected
to a clean spot on the work.

B-5 OPERATION B-5
9. nameplate
The data plate stamped on the metal structure
complies with the EN 60974-1,
EN50199(EN60974-10) international standards and
contains the following information:
* (a) Manufacturer's name and address
* (b) Trademark
* (c) Model
* (No) Serial number
* ( ) The welding power
source comprises a frequency converter followed by
an transformer and rectifier that transforms input
voltage into direct current.
* (EN 60974-1/EN 50199) Standards applied.
*( )Directcurrent.
* (x) Utilisation factor expressed as a percentage of
useful work over a cycle of 10 minutes at an
ambient temperature of 40oC.
* (I2) Rated weld current.
* (U2) Conventional load voltage.
* (Uo) Rated no-load voltage.
*( )CUTwelding.
* ( )) 1input phases.
* (IP21S) Casing protection degree in compliance
with the EN 60529 Standard:
IP2XX Casing protected against access to
dangerous components with fingers and against the
introduction of foreign matters with diameter 12.5
mm.
IPX3X Casing protected against rain failing at
60~on the vertical line.
IPXXC Casing protected against contact of a test
gauge φ2.5 mm length 100 mm with live
dangerous parts,
* (U1) Rated power supply voltage.
* (50/60 Hz) Power supply rated frequency.
* (llmax) Maximum supply current.
(I1 eff) Effective supply current.* ( S ) Generator
suitable for installation in places where major risks
of electric shocks are preset
* (CE) In compliance with the European regulations
in force.
10. air pressure-reduced valve
11. pressure air entrance 12. fan
13. indication of air pressure-reduced valve
14. grounding column 15. input cable
10. air pressure-reduced valve
The regulator assembly serves as both a filter/water
trap, and an air regulator. The water trap with the
fine sediment filter is self draining. It is not designed
to dry the air, but rather serves the purpose of
catching any residual slug of water that may be
present in the air line and filtering any trash or
sediment that passes into the bowl of the regulator.
It is not designed to serve as an air dryer. A
separate air dryer must be placed between the
regulator and the air compressor.During the
assembly of the regulator, be sure to screw the 1/4”
automotive quick connect into the side that is
stamped on top with “IN” or that has been stamped
with an arrow pointing to the center of the regulator.
The small brass plug should screw into the center of
the regulator and the remaining push-to-connect
fitting should be screwed into the remaining hole.
Then, connect the clear tubing to the push-to-
connect. Make sure the shoulder of the tubing has
been cut squarely or the connection may leak as a
result. Screw the regulator bracket to the back of
the plasma cutter first before attaching the regulator
to the bracket. Make sure the screws located in the
accessory bag are the proper length and are
inserted with the accompanying lock and flat
washers. To adjust the regulator, simply pull the
knob up slightly until it clicks, and rotate the knob
clockwise to increase the pressure or counter
clockwise to decrease the pressure. To lock in the
setting, push the knob down until it clicks. Do not
exceed 90 psi supply pressure. Do not exceed 85
psi on the plasma cutter side of the regulator or
internal leakage may result. Operating air pressure
should be set between 70 and 75 psi while in to
“Test” mode.
11. pressure air entrance
The gas input line is connected to the Regulator
assembly via the clear tubing provided in the
accessory package. To attach, simply push the
tubing into the connector until it is firmly seated then
give a slight tug to make sure it has been captured
correctly by the fitting. Make sure that the tubing
shoulder is squarely cut and not cut at an angle. An
uneven or angular cut will cause leaking at the
connector. If the tubing must be removed, simply
push on the outer plastic collar back while holding
the tubing firmly in the other hand.
12. fan
when power switch on, the cooling fan runs
~

B-6 OPERATION B-6
13. indication of air pressure-reduced
valve
The gauge registers up to 150 psi, but air pressure
to the cutter from the tank should never be set
above 90 psi. Air pressure to the torch should be
set at 70-80 psi. Ideal pressure should be 75 psi.
14. grounding column
The earthing must be made according to the
national regulations. Make sure that the supply
mains and the earthing are sufficient and adequate
15. input cable
connected main supply
WARNING:
DO NOT CONNECT THE PLASMA CUTTER TO
ANY OTHER VOLTAGE OR PHASE , OR
SEVERE DAMAGE WILL RESULT!
16.POWER SWITCH - Input line switch The
breaker switch contains 2 poles for power. It serves
as the On/Off switch for the cutter.
Always turn the cutter on and off by the switch first
before using any disconnect switch.
17.indication of over heat
If duty cycle is exceeded,the Duty Cycle light will
come on and cutting will be interrupted, but the unit
will continue to run and the fan will cool. Once the
light goes off cutting may resume. After 5-10
minutes, if the light does not go off and cutting is
still prevented, the cycle the machine off and then
back on.
18. indication of PSI OK TO CUT（minimum）
Air Pressure OK to Cut LED
This light should remain on as long as there is
sufficient cutting pressure to protect the torch from
melting. Once the air pressure drops below the
minimum threshold of approximately 35 psi, the light
will go out, indicating the pressure is too low. If the
light goes out the unit will automatically prevent the
torch arc from being activated and there will be no
power to the torch. The unit will not cut until the
minimum air pressure is satisfied.
19.fuse 30A
This fuse protects the unit from overloads due to the
pilot arc. If the unit ceases to operate, check
the fuse and replace it if it is faulty. This is a
standard glass type automotive fuse which can be
sourced locally. Do not use a higher rating than
what the old fuse is rated for or damage can occur.
WARNING:
DO NOT CHANGE THE FUSE WHEN THE
CUTTER IS ON , OR The FUSE arc is capable
of burning the operator,others even
piercing safety clothing
20.CNC
This allows the unit to be used with a CNC machine
and provides the basic inputs for CNC operation.
See pin-out section located in the back of this
manual.