C-70A
®
CUTSKILL
PLASMA CUTTING
SYSTEM
Operation Manual
Rev. AA.01 Issue Date: March 26, 2007 Manual 0-4679
Operating Features:
PLASMA
70
400
v
WARNINGS
Read and understand this entire Manual and your employer’s safety practices before installing,
operating, or servicing the equipment.
While the information contained in this Manual represents the Manufacturer's best judgement,
the Manufacturer assumes no liability for its use.
Plasma Cutting Power Supply
CutSkill
®
SL100™ 1Torch™
Operation Manual Number 0-4679
Covered under U.S. Patents.
Published by:
Thermadyne Corporation
82 Benning Street
West Lebanon, New Hampshire, USA 03784
(603) 298-5711
www.thermal-dynamics.com
©Copyright 2005, 2006, 2007 by
Thermal Dynamics Corporation
All rights reserved.
Reproduction of this work, in whole or in part, without written permission of the publisher is prohibited.
The publisher does not assume and hereby disclaims any liability to any party for any loss or damage
caused by any error or omission in this Manual, whether such error results from negligence, accident, or
any other cause.
Printed in the United States of America
Publication Date: March 26, 2007
Record the following information for Warranty purposes:
Where Purchased:____________________________________
Purchase Date:_______________________________________
Power Supply Serial #:________________________________
Torch Serial #:________________________________________
TABLE OF CONTENTS
SECTION 1:
GENERAL INFORMA TION ................................................................................................ 1-1
1.01 Notes, Cautions and Warnings ...................................................................... 1-1
1.02 Important Safety Precautions....................................................................... 1-1
1.03 Publications .................................................................................................. 1-2
1.04 Declaration of Conformity ............................................................................. 1-4
1.05 Statement of Warranty .................................................................................. 1-5
SECTION 2:
INTRODUCTION ............................................................................................................... 2-1
2.01 Overview ...................................................................................................... 2-1
2.02 General Specifications.................................................................................. 2-1
2.03 Features ....................................................................................................... 2-1
2.04 Torch Specifications ..................................................................................... 2-2
2.05 System Contents.......................................................................................... 2-2
2.06 T ransporting Methods ................................................................................... 2-2
SECTION 3:
INSTALLATION.................................................................................................................. 3-1
3.01 Site Selection ............................................................................................... 3-1
3.02 Electrical Input Connections ......................................................................... 3-1
3.03 Compressed Air Connection ......................................................................... 3-1
SECTION 4:
OPERATION...................................................................................................................... 4-1
4.01 Front Control Panel ....................................................................................... 4-1
4.02 Preparations For Operating ........................................................................... 4-2
SECTION 5:
SERVICE .......................................................................................................................... 5-1
5.01 General Maintenance .................................................................................... 5-1
5.02 Basic T roubleshooting Guide......................................................................... 5-1
5.03 Contact information ...................................................................................... 5-3
Appendix 1: Operating Sequence, Block Diagram .....................................................................A-1
Appendix 2: Torch Connection ................................................................................................... A-2
Appendix 3: Replacement Hand Torch Parts List ....................................................................... A-4
Appendix 4: 230 V olt System Schematic................................................................................... A-6
Appendix 5: 400 Volt CE System Schematic.............................................................................A-8
SECTION 1:
GENERAL INFORMATION
1.01 Notes, Cautions and Warnings
Throughout this manual, notes, cautions, and warnings
are used to highlight important information. These highlights are categorized as follows:
NOTE
An operation, procedure, or background information which requires additional emphasis or is helpful in efficient operation of the system.
CAUTION
A procedure which, if not properly followed, may
cause damage to the equipment.
WARNING
A procedure which, if not properly followed, may
cause injury to the operator or others in the operating area.
1.02 Important Safety Precautions
WARNINGS
OPERATION AND MAINTENANCE OF
PLASMA ARC EQUIPMENT CAN BE DANGEROUS AND HAZARDOUS TO YOUR
HEALTH.
Plasma arc cutting produces intense electric and
magnetic emissions that may interfere with the
proper function of cardiac pacemakers, hearing aids,
or other electronic health equipment. Persons who
work near plasma arc cutting applications should
consult their medical health professional and the
manufacturer of the health equipment to determine
whether a hazard exists.
To prevent possible injury, read, understand and
follow all warnings, safety precautions and instructions before using the equipment. Call 1-603-2985711 or your local distributor if you have any questions.
GASES AND FUMES
Gases and fumes produced during the plasma cutting
process can be dangerous and hazardous to your health.
• Keep all fumes and gases from the breathing area.
Keep your head out of the welding fume plume.
• Use an air-supplied respirator if ventilation is not
adequate to remove all fumes and gases.
• The kinds of fumes and gases from the plasma arc
depend on the kind of metal being used, coatings
on the metal, and the different processes. You must
be very careful when cutting or welding any metals which may contain one or more of the following:
Antimony Chromium Mercury
Arsenic Cobalt Nickel
Barium Copper Selenium
Beryllium Lead Silver
Cadmium Manganese Vanadium
• Always read the Material Safety Data Sheets
(MSDS) that should be supplied with the material
you are using. These MSDSs will give you the information regarding the kind and amount of fumes
and gases that may be dangerous to your health.
• For information on how to test for fumes and gases
in your workplace, refer to item 1 in Subsection 1.03,
Publications in this manual.
• Use special equipment, such as water or down draft
cutting tables, to capture fumes and gases.
• Do not use the plasma torch in an area where combustible or explosive gases or materials are located.
• Phosgene, a toxic gas, is generated from the vapors
of chlorinated solvents and cleansers. Remove all
sources of these vapors.
• This product, when used for welding or cutting, produces fumes or gases which contain chemicals
known to the State of California to cause birth defects and, in some cases, cancer. (California Health
& Safety Code Sec. 25249.5 et seq.)
ELECTRIC SHOCK
Electric Shock can injure or kill. The plasma arc process
uses and produces high voltage electrical energy. This
electric energy can cause severe or fatal shock to the operator or others in the workplace.
• Never touch any parts that are electrically “live” or
“hot.”
Manual 0-4679 1-1 GENERAL INFORMATION
• Wear dry gloves and clothing. Insulate yourself
from the work piece or other parts of the welding
circuit.
• Repair or replace all worn or damaged parts.
• Extra care must be taken when the workplace is
moist or damp.
• Install and maintain equipment according to NEC
code, refer to item 9 in Subsection 1.03, Publications.
• Disconnect power source before performing any service or repairs.
• Read and follow all the instructions in the Operating Manual.
FIRE AND EXPLOSION
Fire and explosion can be caused by hot slag, sparks, or
the plasma arc.
• Be sure there is no combustible or flammable material in the workplace. Any material that cannot be
removed must be protected.
• Ventilate all flammable or explosive vapors from
the workplace.
• Do not cut or weld on containers that may have held
combustibles.
• Provide a fire watch when working in an area where
fire hazards may exist.
• Hydrogen gas may be formed and trapped under
aluminum workpieces when they are cut underwater or while using a water table. DO NOT cut alu-
minum alloys underwater or on a water table unless the hydrogen gas can be eliminated or
dissipated. Trapped hydrogen gas that is ignited
will cause an explosion.
NOISE
Noise can cause permanent hearing loss. Plasma arc processes can cause noise levels to 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 muffs. Protect others
in the workplace.
• Noise levels should be measured to be sure the decibels (sound) do not exceed safe levels.
• For information on how to test for noise, see item 1
in Subsection 1.03, Publications, in this manual.
PLASMA ARC RAYS
Plasma Arc Rays can injure your eyes and burn your skin.
The plasma arc process produces very bright ultra violet
and infra red light. These arc rays will damage your eyes
and burn your skin if you are not properly protected.
• To protect your eyes, always wear a welding helmet or shield. Also always wear safety glasses with
side shields, goggles or other protective eye wear.
• Wear welding gloves and suitable clothing to protect your skin from the arc rays and sparks.
• Keep helmet and safety glasses in good condition.
Replace lenses when cracked, chipped or dirty.
• Protect others in the work area from the arc rays.
Use protective booths, screens or shields.
• Use the shade of lens as suggested in the following
per ANSI/ASC Z49.1:
Minimum Protective Suggested
Arc Current Shade No. Shade No.
Less Than 300* 8 9
300 - 400* 9 12
400 - 800* 10 14
* These values apply where the actual arc is clearly
seen. Experience has shown that lighter filters may
be used when the arc is hidden by the workpiece.
1.03 Publications
Refer to the following standards or their latest revisions
for more information:
1. OSHA, SAFETY AND HEALTH STANDARDS, 29CFR
1910, obtainable from the Superintendent of Documents,
U.S. Government Printing Office, Washington, D.C.
20402
2. ANSI Standard Z49.1, SAFETY IN WELDING AND
CUTTING, obtainable from the American Welding Society, 550 N.W. LeJeune Rd, Miami, FL 33126
3. NIOSH, SAFETY AND HEALTH IN ARC WELDING
AND GAS WELDING AND CUTTING, obtainable from
the Superintendent of Documents, U.S. Government
Printing Office, Washington, D.C. 20402
4. ANSI Standard Z87.1, SAFE PRACTICES FOR OCCUPATION AND EDUCATIONAL EYE AND FACE PROTECTION, obtainable from American National Standards Institute, 1430 Broadway, New York, NY 10018
5. ANSI Standard Z41.1, STANDARD FOR MEN’S
SAFETY-TOE FOOTWEAR, obtainable from the American National Standards Institute, 1430 Broadway, New
York, NY 10018
GENERAL INFORMATION 1-2 Manual 0-4679
6. ANSI Standard Z49.2, FIRE PREVENTION IN THE
USE OF CUTTING AND WELDING PROCESSES, obtainable from American National Standards Institute,
1430 Broadway, New York, NY 10018
7. AWS Standard A6.0, WELDING AND CUTTING
CONTAINERS WHICH HAVE HELD COMBUSTIBLES, obtainable from American Welding Society,
550 N.W. LeJeune Rd, Miami, FL 33126
8. NFPA Standard 51, OXYGEN-FUEL GAS SYSTEMS
FOR WELDING, CUTTING AND ALLIED PROCESSES, obtainable from the National Fire Protection
Association, Batterymarch Park, Quincy, MA 02269
9. NFPA Standard 70, NATIONAL ELECTRICAL CODE,
obtainable from the National Fire Protection Association, Batterymarch Park, Quincy, MA 02269
10. NFPA Standard 51B, CUTTING AND WELDING PROCESSES, obtainable from the National Fire Protection
Association, Batterymarch Park, Quincy, MA 02269
11. CGA Pamphlet P-1, SAFE HANDLING OF COMPRESSED GASES IN CYLINDERS, obtainable from the
Compressed Gas Association, 1235 Jefferson Davis
Highway, Suite 501, Arlington, VA 22202
12. CSA Standard W117.2, CODE FOR SAFETY IN WELDING AND CUTTING, obtainable from the Canadian
Standards Association, Standards Sales, 178 Rexdale
Boulevard, Rexdale, Ontario, Canada M9W 1R3
13. NWSA booklet, WELDING SAFETY BIBLIOGRAPHY
obtainable from the National Welding Supply Association, 1900 Arch Street, Philadelphia, PA 19103
14. American Welding Society Standard AWSF4.1, RECOMMENDED SAFE PRACTICES FOR THE PREPARATION FOR WELDING AND CUTTING OF CONTAINERS AND PIPING THAT HAVE HELD HAZARDOUS
SUBSTANCES, obtainable from the American Welding
Society, 550 N.W. LeJeune Rd, Miami, FL 33126
15. ANSI Standard Z88.2, PRACTICE FOR RESPIRATORY
PROTECTION, obtainable from American National
Standards Institute, 1430 Broadway, New York, NY
10018
Manual 0-4679 1-3 GENERAL INFORMATION
1.04 Declaration of Conformity
Manufacturer: Thermal Dynamics Corporation
Address: 82 Benning Street
West Lebanon, New Hampshire 03784
USA
The equipment described in this manual conforms to all applicable aspects and regulations of the ‘Low Voltage
Directive’ (European Council Directive 73/23/EEC as amended by Council Directive 93/68/EEC) and to the National
legislation for the enforcement of this Directive.
The equipment described in this manual conforms to all applicable aspects and regulations of the "EMC Directive"
(European Council Directive 89/336/EEC) and to the National legislation for the enforcement of this Directive.
Serial numbers are unique with each individual piece of equipment and details description, parts used to manufacture
a unit and date of manufacture.
National Standard and Technical Specifications
The product is designed and manufactured to a number of standards and technical requirements. Among them are:
* CSA (Canadian Standards Association) standard C22.2 number 60 for Arc welding equipment.
* UL (Underwriters Laboratory) rating 94VO flammability testing for all printed-circuit boards used.
* CENELEC EN50199 EMC Product Standard for Arc Welding Equipment.
* ISO/IEC 60974-1 (BS 638-PT10) (EN 60 974-1) (EN50192) (EN50078) applicable to plasma cutting equipment and
associated accessories.
* For environments with increased hazard of electrical shock, Power Supplies bearing the S mark conform to EN50192
when used in conjunction with hand torches with exposed cutting tips, if equipped with properly installed standoff
guides.
* Extensive product design verification is conducted at the manufacturing facility as part of the routine design and
manufacturing process. This is to ensure the product is safe, when used according to instructions in this manual and
related industry standards, and performs as specified. Rigorous testing is incorporated into the manufacturing
process to ensure the manufactured product meets or exceeds all design specifications.
Thermal Dynamics has been manufacturing products for more than 30 years, and will continue to achieve excellence
in our area of manufacture.
Manufacturers responsible representative: Steve Ward
Operations Director
Thermadyne Europe
Europa Building
Chorley N Industrial Park
Chorley, Lancashire,
England PR6 7BX
GENERAL INFORMATION 1-4 Manual 0-4679
1.05 Statement of Warranty
LIMITED WARRANTY: Subject to the terms and conditions established below, Thermadyne® Corporation warrants to the original retail
purchaser that new Thermadyne CutSkill Series plasma cutting systems sold after the effective date of this warranty are free of defects in
material and workmanship. Should any failure to conform to this warranty appear within the applicable period stated below, Thermadyne
Corporation shall, upon notification thereof and substantiation that the product has been stored operated and maintained in accordance
with Thermadyne’s specifications, instructions, recommendations and recognized industry practice, correct such defects by suitable repair
or replacement.
This warranty is exclusive and in lieu of any warranty of merchantability or fitness for a particular purpose.
Thermadyne will repair or replace, at its discretion, any warranted parts or components that fail due to defects in material or workmanship
within the time periods set out below. Thermadyne Corporation must be notified within 30 days of any failure, at which time Thermadyne
Corporation will provide instructions on the warranty procedures to be implemented.
Thermadyne Corporation will honor warranty claims submitted within the warranty periods listed below. All warranty periods begin on
the date of sale of the product to the original retail customer or 1 year after sale to an authorized Thermadyne Distributor.
LIMITED WARRANTY PERIOD
Product
Power Supply Componants
(Parts and Labor)
Torch and Leads
(Parts and Labor)
C-20A 1 Year 1 Year
C-35A 1 Year 1 Year
C-70A 1 Year 1 Year
C-100A 1 Year 1 Year
This warranty does not apply to:
1. Consumable Parts, such as tips, electrodes, shield cups, o - rings, starter cartridges, gas distributors, fuses, filters.
2. Equipment that has been modified by an unauthorized party, improperly installed, improperly operated or misused
based upon industry standards.
In the event of a claim under this warranty, the remedies shall be, at the discretion of Thermadyne Corporation:
1. Repair of the defective product.
2. Replacement of the defective product.
3. Reimbursement of reasonable costs of repair when authorized in advance by Thermadyne.
4. Payment of credit up to the purchase price less reasonable depreciation based on actual use.
These remedies may be authorized by Thermadyne and are FOB West Lebanon, NH or an authorized Thermadyne service station. Product
returned for service is at the owner’s expense and no reimbursement of travel or transportation is authorized.
LIMITATION OF LIABILITY: Thermadyne Corporation shall not under any circumstances be liable for special or consequential damages
such as, but not limited to, damage or loss of purchased or replacement goods or claims of customer of distributors (hereinafter
“Purchaser”) for service interruption. The remedies of the Purchaser set forth herein are exclusive and the liability of Thermadyne with
respect to any contract, or anything done in connection therewith such as the performance or breach thereof, or from the manufacture, sale,
delivery, resale, or use of the goods covered by or furnished by Thermadyne whether arising out of contract, negligence, strict tort, or under
any warranty, or otherwise, shall not, except as expressly provided herein, exceed the price of the goods upon which liability is based.
This warranty becomes invalid if replacement parts or accessories are used which may impair the safety or performance of any
Thermadyne product.
This warranty is invalid if the Thermadyne product is sold by non - authorized persons.
Effective January 25, 2005
Manual 0-4679 1-5 GENERAL INFORMATION
This Page Left Blank
GENERAL INFORMATION 1-6 Manual 0-4679
SECTION 2:
Maximum Output
70 Amps
No Load Voltage
250V
Load Volt age
108V
CUT
6
INTRODUCTION
OFF
70A
2.01 Overview
Plasma is a gas which has been heated to an extremely
high temperature and ionized so that it becomes electrically conductive. The plasma arc cutting process uses
this plasma to transfer an electrical arc to the workpiece.
The metal to be cut is melted by the heat of the arc and
then blown away.
2.02 General Specifications
Sy stem Des cripti ons C-70A
Input Volt age 230V
Input Volt age 400V CE Three Phase
Frequency 50/60Hz
Input Power 230V 1 Phas e
Input Power 230V 3 Phas e
Input Power Fuse, 1 P hase
Input Power Fuse, 3 P hase
Input Power 400V 24 Amps (9. 6 k V A )
Input Power Fuse, 3 Phase 400V - 30 Amp
Out put Current 25-70 A m ps
Pos t -F low t i me 10 Seconds
Operating A ir P res sure .5MPa (5 bar)
Max imum Air Pres sure .86M P a (8 . 6 b ar)
Air flow
Sy stem *Dut y Cyc le Rati ngs
at Ambi e nt Air Tem pe rat u res
of 40° C / 104° F.
Sy stem *Dut y Cyc le Rati ngs
at Ambi e nt Air Tem pe rat u res
of 40° C / 104° F.
Sy stem *Dut y Cyc le Rati ngs
at Ambi e nt Air Tem pe rat u res
of 40° C / 104° F.
Maximum Cutting Capacity 1" (25mm)
Dim e nsi ons (W x D x H)
Net Weight 66 lbs. (30 kg)
Single and
Three Phase
67 Amps (15.4 kVA )
37 Amps ( 8.5 kVA )
230V - 80 Amp
230V - 40 Amp
400 sc fh
6.6 s cfm
(188.7 lpm)
35% @ 70Am ps
60% @ 60Am ps
100% @ 50Am ps
9.7" x 21.7" x 16. 5"
(245 mm x 550 mm x
420 mm )
CUT
60A
CUT
50A
35% (3.5 min)
60% (6 min)
OFF
100% (10 min)
NOTE:
*Duty Cycle is the percentage of time the system can be operated without overheating. Duty
cycle is reduced if primary input voltage (AC) is
low or the DC voltage is higher than shown in
previous chart.
2.03 Features
• RELIABLE AND POWERFUL - This inverter
based power supply operates on standard 230V
single or three phase power.
• POWERFUL CUTTING PERFORMANCE Maximum cutting capacity is 1” (25mm).
• CUTS MOST METALS - Useful for most metals
such as stainless steel, aluminum, mild steel, copper and alloys.
• NO HIGH FREQUENCY - Starts without highfrequency so it won’t interfere with controls or
computers.
• MORE TORCH, LESS MONEY - The SL100™
1T orch™ pr ovides state of the art technology and
performance of more expensive torches.
Art # A-0450
Manual 0-4679 2-1 Introduction
2.04 Torch Specifications
Torch Handle
Torch Leads Length
20 feet (6.1 m)
peak
stream through torc h
400 scfh 6.6 scfm
ITEMS
Description
Q'ty
1
1
1
2
1-1670-3
SL10 0™ 1 T orch™ Rating s f or C-70A
Torc h Co nfigura t i o n
Ambient
Temperature
Torch Duty Cy cle
Maximum Current
Volt age (V
Arc S t ri k i ng V ol t age 7kV
Type of Cooli ng
Parts-in-Place:
Gas Requ i rem en t :
Input
Gas P res sure
Minimum Gas Flow
Plasma Power
Supply Us ed With:
)500V
Torch Head at 75° t o
104° F
40° C
100% @ 100 Am ps
@ 400 sc fh
100 Amps, DC,
Straight Polarity
Am bient air and gas
Built-in Switch
in Torch Head
Single Gas,
Compress ed A i r O nl y
.5M Pa (5 bar) .86MPa (8.6 bar)
(188.7 lpm)
C-70A
2.05 System Contents
Power Sourc e Mo del C-70A 1
Torch S et SL100™, 20' (6.1m) 1
Air Regulator
Added
Features
Input Power
Cable F or
Systems
1-1670-1
Input Power
Cable F or
Systems
1-1670-4 (CE)
If you have questions or concerns regarding your system, please contact:
Thermal Dynamics Technical Service Dept.
Tel: 1-800-752-7622 (1-800-PLASMA2)
Fax: 1-800-221-4401
Work Cable
Manual
Torch Electrodes
Torch Tips
2 Meter 6 AWG SOW with
6 - 50 P molded pl ug
2 Meter Cord With No Plug
3
1
1
e-mail address: tdc-tech@thermadyne.com
2.06 Transpor ting Methods
Lift unit with handle on top of case. Use handcart or
similar device of adequate capacity for transporting.
WARNINGS
ELECTRIC SHOCK can kill. DO NOT
TOUCH live electrical parts. Disconnect input
power from supply before moving the power
source.
F ALLING EQUIPMENT can cause serious personal injury and equipment damage.
Introduction 2-2 Manual 0-4679
SECTION 3:
Connect Air
Art # A-04486
3.03 Compressed Air Connection
INSTALLATION
3.01 Site Selection
• Place in a clean and dry area.
• Provide adequate ventilation and fresh air supply.
• Ideal ambient temperature should not exceed
40°C / 104°F. Temperatures exceeding that may
diminish cutting capacity or quality.
• The cutting machine must be placed on an even,
firm surface so that it stands firmly.
W ARNING
This equipment must be electrically connected
by a qualified electrician.
3.02 Electrical Input Connections
• Input voltage is 230V ± 10%, 50/60 Hz single
phase or three phase.
• An air compressor is requir ed and should be connected to rear panel of power source by air hose.
• Air pressure should be .5MPa (5 bar) and air
should be dry and clean.
• Air flow should be 400 scfh / 6.6 scfm (188.7 lpm)
minimum.
Input Power
Here
Cable
CAUTION
Check your power source for correct voltage before plugging in or connecting the unit. The
primary power source, fuse, and any extension
cords used must conform to local electrical code
and the recommended circuit protection and wiring requirements as specified in Section 2.0.
DANGER
Do not cut in humid or wet surroundings.
• Before you maintain or replace torch parts, wait
for the post flow air cycle (approximately 10 seconds), to stop, then turn the machine off.
• Always use original manufacturers parts. The use
of aftermarket parts could result in shorter parts
life and in unsatisfactory cutting results. Any warranty claims would be waived.
• W orn parts should be r ecycled accor ding to local
requirements.
NOTE
Repairs must be done by skilled and qualified
personnel only.
Manual 0-4679 3-1 Installation
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Installation 3-2 Manual 0-4679
SECTION 4:
Overheating
r
r
T
L
ol
A
Art # A-04431
OPERATION
B. Buttons
• Torch Switch Latch Button
4.01 Front Control Panel
AC Power
Indicator
"On / Off"
Switch
orch Switch
atch Button
Air Set
Button
Work Lead
Connection
A. Indicator Lamp
• Power Indicator
Lights when primary power switch is turned
on.
• TEMPERA TURE Indicator
Indicator is normally OFF. Indicator is ON
when internal temperature exceeds normal
limits.
Indicator
I
O
Art # A-04430
Air Error Indicato
70A
50
40
60
30
70
20
A
Torch Switch
Latch Indicato
Current Contr
Knob
Air V ents
Torch
Connection
For continuous cutting performance. Depress
this button ( turn “On” ) while cutting with the
torch. Release the torch trigger and the torch
will continue to cut without depressing the torch
trigger.
• Air Set Button
T o check for proper air setting and to cool down
heated torch.
Art # A-04503
Air will flow from gap
next to shield cup.
C. Main Current Control Knob
T o adjust cutting current. T urning clockwise increases the cutting current and counter clockwise decreases the cutting current.
40
50
60
70
• Air Error Indicator
This indicator lights when there is not enough
30
20
air pressure to operate the power supply.
NOTE
It is possible to have enough air pressure to operate the power supply but not enough air flow
to operate the torch.
D. Primary Power Switch, ON / OFF
The power switch is located on the front panel.
Placing the primary power switch to the “ON”
• Torch Switch Latch Indicator
position energizes the power source and activates the Power Indicator .
This indicator lights when the Torch Switch
Latch Button has been pressed for continuous
cutting.
When the power source is overloaded, the switch
W ARNING
turns to the OFF position automatically. DO
NOT TURN ON BY FORCE.
Manual 0-4679 4-1 Oper ation
4.02 Preparations For Operating
Make a clean work cable
W
A
Art # A-04389
3
D. Torch Operation
At the start of each operating session:
W ARNING
Disconnect primary power at the source before
assembling or disassembling power supply, torch
parts, or torch and leads assemblies.
A. Torch Parts Selection
Check the torch for proper assembly and appropriate torch parts. The torch parts must correspond
with the type of operation, and with the amperage
output of this Power Supply (70 amps maximum).
Use only genuine manufactured parts with this
torch.
• Refer to Section 1 for necessary safety precautions.
Trigger
1
2
Trigger Release
3
4
Art # A-0338
Electrode
9-8215
Start Cartridge
9-8213
Tip
9-8231
Art # A-04432
Shield Cup
9-8218
B. Torch Connection
Check that the torch is properly connected.
C. Connect Work Cable
connection to the workpiece or cutting table
ork Cable
nd Clamp
Operation 4-2 Manual 0-4679
E. Typical Cutting Speeds
Cutting speeds vary according to torch output, the type of material being cut, and operator skill. Speeds
shown are typical for this cutting system using air plasma to cut mild steel, with output current at the
highest setting and the torch set at the indicated standoff height.
Unit Standoff
C-70A 3/16" (5mm ) 1/4" (6mm ) 129.7 3242 103.7 2593
C-70A 3/16" (5mm ) 3/8" (10mm) 63.3 1583 50. 7 1267
C-70A 3/16" (5mm ) 1/2" (12mm) 38.0 951 30.4 761
C-70A 3/16" (5mm ) 3/4" (19mm) 19.9 498 15.9 399
C-70A 3/16" (5mm ) 1" (25mm ) 14. 4 361 11.5 289
Material
Thickness
Max imum Travel S peed
(ipm , mm/m)
Recomm ended Travel Speed
(imp , mm/m)
Manual 0-4679 4-3 Oper ation
This Page Left Blank
Operation 4-4 Manual 0-4679
SECTION 5:
g
U
i
C
U
w
M
SERVICE
5.01 General Maintenance
1. Basic Tr oubleshooting Overview
This guide covers basic troubleshooting. It is helpful for
solving many of the common problems that can arise with
this system. If major complex subassemblies are faulty,
the unit must be returned to an authorized service center
for repair .
O-rings on the Torch require lubrication on a regular
basis, depending on how frequently the torch shield
cup is disconnected and re-connected. This will allow
the O-rings to remain pliable and provide a proper
seal. The O-rings will dry out, becoming hard and
cracked, if the O-ring lubricant is not used on a regular
basis. This can lead to potential performance problems.
Remove and apply a very light film of O-ring lubricant
(Catalog # 8-4025) to the O-rings on a weekly basis.
NOTE
DO NOT use other lubricants or grease on the torch
O-rings. They may not be designed to operate within
high temperatures or may contain “unknown elements” that may react with the atmosphere. This
reaction can leave contaminants inside the torch.
Either of these conditions can lead to inconsistent
performance or poor parts life.
Art # A-04394
Follow all instructions as listed and complete each section in the order presented.
2. Common Symptoms
A. Primary power switch is ON, but power indicator
doesn’t light.
1. Improper electrical connection.
a. Check the input cable line & connection.
b. Check input power that its turned on.
c. Check the input power fuse.
2. System was overloaded.
a. Turn Primary Power Switch Off and then On
again.
3. Switch may be faulty.
a. Return to an authorized service center for re-
pair .
B. Primary power switch is on, but the cooling fan
does not work.
1. No power / incorrect power to fan or failed fan.
a. Return to an authorized service center for re-
pair .
pper Groove
ith V ent Holes
ust Remain Open
pper O-Ring
n Correct Groove
at. #8-3487
Threads
Lower O-Rin
Cat. #8-3486
5.02 Basic Troubleshooting Guide
W ARNING
There are extremely dangerous voltage and power
levels present inside this unit. Do not attempt to
diagnose or repair unless you have had training in
power electronics measurement and troubleshooting techniques.
C . No air flow at torch when air check switch is turned
on.
1. Input air connection is disconnected.
a. Connect the input air.
2. Input air supply not working.
a. Check the compressor manufacturer's manual
for trouble shooting and follow local maintenance procedures.
3. Internal connection is disconnected or loose.
a. Check all air line connections and fittings.
4. Filter or control PCB faulty.
a. Return to an authorized service center for re-
pair .
Manual 0-4679 5- 1 SERVICE
D. T orch will not pilot when torch switch is activated.
g
Start Cartridge
A
g
Start Cartridge
E. Cut performance is diminished.
1. Gas pressure too high or too low.
a. Adjust gas pressure per pressure setting label
on power supply .
NOTE
It is possible to have enough air pressure to operate
the power supply but not enough air flow to operate
the torch.
2. Tor ch tip, start cartridge, or electrode missing.
a. Turn off power supply. Remove shield cup. In-
stall missing parts.
3. Start cartridge is stuck.
a. Turn off power supply. Remove shield cup, tip,
and start cartridge. Check lower end fitting on
start cartridge for free movement. Replace cartridge if lower end fitting does not move freely .
Lower End Fittin
1. Worn torch parts.
a. Check current setting. Check the Electrode and
Tip for excess wear .
New Electrode
rt # A-03284
Good Tip
Worn Electrode
Worn Tip
A-03406
b. Check that the lower end fitting on the start car-
tridge moves freely. Replace any or all parts as
needed.
Art # A-03621
4. Worn or faulty torch parts
a. Inspect torch consumable parts. Replace if nec-
essary.
5. Thermal Switch activated
a. Allow the cooling fan to run for 2 minutes or
longer until it will resume operation.
NOTE
When operating the torch in a normal condition, a
small amount of gas / air vents through the gap between the shield cup and torch handle. Do not attempt to over tighten the shield cup as irreparable
damage to internal components may result.
Art # A-04503
Lower End Fittin
Art # A-03621
Air will flow from gap
next to shield cup.
SERVICE 5-2 Manual 0-4679
2. Poor Work Lead connection.
Make a clean work cable
W
A
Art # A-04389
a. Check the connection of the Work Lead to the
work piece.
connection to the workpiece or cutting table
ork Cable
nd Clamp
3. Current sensor or PWM PCB faulty.
a. Return to an authorized service center for re-
pair .
F . Air flows continuously and torch switch latch
button doesn't work properly .
1. Tor ch Switch Latch button on front panel faulty .
a. Return to an authorized service center for re-
pair .
2. Control PCB faulty.
a. Return to an authorized service center for re-
pair .
5.03 Contact information
Thermal Dynamics T echnical Service Dept.
T el: 1-800-752-7622 (1-800-PLASMA2)
Fax: 1-800-221-4401
e-mail address: tdc-tech@thermadyne.com
Manual 0-4679 5- 3 SERVICE
This Page Left Blank
SERVICE 5-4 Manual 0-4679
Appendix 1: Operating Sequence, Block Diagram
.
Primary Input Power "On" or Plugged in
Power Supply On/Off Switch "On"
Green Power Indicator "On" and Fan is Running
More air flow is required
Red Air Indicator
Release Torch Switch
Air Set Switch "On"
Air Flows at Torch. Set Air Pressure Then Turn Air Set Switch "Off"
Check Torch parts
Air Flow at Torch Stops
alignment. PIP switches
need to be repaired by a
Qualified T echnician
for Torch to Pilot than to
run the power supply.
Re-check regulator setting
Pilot Arc goes out
Pilot Arc Ignition (3-5 seconds)
Torch Tip to Work within 3-5 seconds of Pilot Arc start
Start Cutting Operation
YES
Post Flow of Air, Approximately 10 Seconds Then Stops
Note: The Torch will be very hot! Do not set on or near flammable materials!
Power Supply On/Off Switch "Off"
Cutting Done ?
Torch Switch "Off"
Torch Switch "On"
NO
No Pilot Arc
Green Power Indicator "Off" and Fan Stops
Art # A-04673
Primary Input Power Switch "Off" or Unplugged
Manual 0-4679 A-1 APPENDIX
Appendix 2: Torch Connection
r
Art # A-04445
Disconnect power and air. Lay unit
on its side. Remove access plate.
DETAIL
Negative / Plasma Lead
Power Supply
Adapter
PIP
Switch
Torch
Switch
Torch Head
Negative / Plasma Lead
Black
Orange
Green
White
Pilot
Torch Leads
Pilot
Work Cable
To Power
Supply Adapte
Pilot
APPENDIX A-2 Manual 0-4679
This Page Left Blank
Manual 0-4679 A-3 APPENDIX
Appendix 3: Replacement Hand Torch Parts List
Item # Qty Description Catalog #
1 1 Tor ch Handle Replacement Kit (include items no. 2 & 3) 9-7030
2 1 Trigger Assembly Replacement Kit 9-7034
3 1 Handle Screw Kit (5 each, #6-32 x 1/2" cap screw, and wrench) 9-8062
4 1 Tor ch Head Assembly Replacement Kit (includes items No. 5 & 6) 9-8219
5 1 Large O-Ring 8-3487
6 1 Small O-Ring 8-3486
7 Leads Assemblies with O2B Connectors (includes switch assemblies)
1 SL100 / 70Amp, 20 - foot Leads Assembly with O2B connectors 7-5242
8 1 Switch Kit 9-7031
APPENDIX A-4 Manual 0-4679
7
1
2
4
5
6
3
8
7
A-07060
Manual 0-4679 A-5 APPENDIX
Appendix 4: 230 Volt System Schematic
1PH - R&Bk
3PH - R,W&Bk
R
W
Bk
G
INPUT
AC230V
1/3 PH
TB1
Input Power
Connection
Solenoid V/V
1.7k
FILTER
R
W
Bk
Ω
103 3KV
C1 C6
C2
C3
W
W
FAN
AC230
AC160
AC230
230VAC
NFB
FUSE
CONTROL 3A
T1
Pressure
Sensor
103 3KV
C4
C5
AC12
AC15
AC15
Bk
R
W
W,2
DIODE
320VDC
C7
630V 104MF
R7
C8
+
(-)
Capacitor
TH
W
C8
Bk
Bk,2
R3
Bk
C7
R7
W
C12
P5
G1 E1 G2 E2
E4 G4 E3 G3
P8
5
P
12 VDC
IGBT
Bk
P5
G3 E3 G4 E4
E2 G2 E1 G1
P7
PWM DRIVE
IGBT
W
Bk
R4
W
C13
BOARD
40272004
P1
N/C
P4 P11
CONTROL BOARD
No. 40270702
P1
P1
PANEL BOARD
12 VDC
P2
P2
P3
1
R
1
G
G
Y
Bk
Y
W
W
5
P9
1
3
P7
1
P5
2
1
Art # A-06948
MAIN
HOLD
AIR
CHECK
POWER
TEMP
ERROR
APPENDIX A-6 Manual 0-4679
220VAC
C/T 1
Main Transformer
(2)
(2)
Current Sensor
W
W
W
C11
R5
C16
R8
Bk
R1
C10
VC_1
VD_1
OU_1
GN_1
VC_2
VD_2
OU_2
GN_2
Pilot
Relay
WW
O.C.V. 290 VDC
Pilot 160 VDC
Cutting 130 VDC
WORK
PILOT
N/C
CN1
P6
15 VDC
REACTOR
W
TORCH
S/W
Output Diode
Jumper
R5
C11
R1
S/W
12VDC
Pilot
C10
C16
R8
VC_1
N/C
N/C
VD_1
OU_1
GN_1
VC_2
VD_2
OU_2
GN_2
3
1
50
Ω
DC Output
Torch
S/W
W
Bk
W
W
P3
P4
2
1
P8
15 VDC
P10
0 = Start
P6
P3
Air Plasma 70A (230V)
AIR
ERROR
HOLD
2005 / 01 / 12
A
Art # A-06948
Manual 0-4679 A-7 APPENDIX
Appendix 5: 400 Volt CE System Schematic
INPUT
AC400V
1 / 3 PH
R10
R
S
T
G
FAN
TB1
FILTER PCB
No.40276004
CN1 CN2
TB2
CN3
NFB
FUSE
CONTROL 3A
R11
CN2
CN3
CN1
MAGNET
TH
DIODE
DELAY PCB
No.40279016
IGBT
C13
R4
E2P7G1
G2 E1
IGBT
G3E4 G4
E3
R3
C7
C8
R7
R9
C12
E3E4 G3
G4
P6
E1G2
E2 G1
PWM DRIVE
C9
C14
P5
BOARD
PW-1-0300-P-02
P2
P1
Art # A-06949
Solenoid V/V
Pressure
Sensor
AC230
AC160
AC180
AC12
AC15
AC15
T1
P11
CONTROL BOARD
P9
P7
P5
P3
No.40271006
PANEL BOARD
VOL
MAIN POWER
P4
P1
P1
No.40270005
TEMP
ERROR
AIR
ERROR
P8
P2
HOLD
APPENDIX A-8 Manual 0-4679
C/T 1
P8
Main Transformer
P3
P4
VC_1
VD_1
OU_1
GN_1
VC_2
VD_2
OU_2
GN_2
Current Sensor
R5
C16
R8
REACTOR
C10
VC_1
VD_1
OU_1
GN_1
VC_2
VD_2
OU_2
GN_2
Pilot
Relay
R1
C11
WORK
PILOT
TORCH
S/W
S/W
P9
P6
Torch
P10
P3
S/W
No.40276002
Air Plasma 70A (400V CE)
HOLD
AIR
CHECK
No. 66001010
oct. 18. 2005
AB
Art # A-06949
Manual 0-4679 A-9 APPENDIX
This Page Left Blank
APPENDIX A-10 Manual 0-4679
GLOBAL CUSTOMER SERVICE CONTACT INFORMATION
Thermadyne USA
2800 Airport Road
Denton, Tx 76207 USA
Telephone: (940) 566-2000
800-426-1888
Fax: 800-535-0557
Email: sales@thermalarc.com
Thermadyne Canada
2070 Wyecroft Road
Oakville, Ontario
Canada, L6L5V6
Telephone: (905)-827-1111
Fax: 905-827-3648
Thermadyne Europe
Europe Building
Chorley North Industrial Park
Chorley, Lancashire
England, PR6 7Bx
Telephone: 44-1257-261755
Fax: 44-1257-224800
Thermadyne Asia Sdn Bhd
Lot 151, Jalan Industri 3/5A
Rawang Integrated Industrial Park - Jln Batu Arang
48000 Rawang Selangor Darul Ehsan
West Malaysia
Telephone: 603+ 6092 2988
Fax : 603+ 6092 1085
Cigweld, Australia
71 Gower Street
Preston, Victoria
Australia, 3072
Telephone: 61-3-9474-7400
Fax: 61-3-9474-7510
Thermadyne Italy
OCIM, S.r.L.
Via Benaco, 3
20098 S. Giuliano
Milan, Italy
Tel: (39) 02-98 80320
Fax: (39) 02-98 281773
Thermadyne, China
RM 102A
685 Ding Xi Rd
Chang Ning District
Shanghai, PR, 200052
Telephone: 86-21-69171135
Fax: 86-21-69171139
Thermadyne International
2070 Wyecroft Road
Oakville, Ontario
Canada, L6L5V6
Telephone: (905)-827-9777
Fax: 905-827-9797
Corporate Headquarters
16052 Swingley Ridge Road
Suite 300
St. Louis, MO 63017
Telephone: 636-728-3000
Email: TDCSales@Thermadyne.com
www.thermadyne.com
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