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powermax1250
Plasma Arc
Cutting System
Service Manual
803940 – Revision 4
®
powermax1250
Service Manual
(P/N 803940)
Revision 4 – July 2006
Hypertherm, Inc.
Hanover, NH USA
www.hypertherm.com
© Copyright 2006 Hypertherm, Inc.
All Rights Reserved
Hypertherm and Powermax are trademarks of Hypertherm, Inc.
and may be registered in the United States and/or other countries.
H
ypertherm, Inc.
Etna Road, P.O. Box 5010
Hanover, NH 03755 USA
6
03-643-3441 Tel (Main Office)
603-643-5352 Fax (All Departments)
info@hypertherm.com (Main Office Email)
8
00-643-9878 Tel (Technical Service)
technical.service@hypertherm.com (Technical Service Email)
800-737-2978 Tel (Customer Service)
customer.service@hypertherm.com (Customer Service Email)
Hypertherm Automation
5 Technology Drive, Suite 300
West Lebanon, NH 03784 USA
603-298-7970 Tel
603-298-7977 Fax
Hypertherm Plasmatechnik, GmbH
Technologiepark Hanau
Rodenbacher Chaussee 6
D-63457 Hanau-Wolfgang, Deutschland
49 6181 58 2100 Tel
49 6181 58 2134 Fax
49 6181 58 2123 (Technical Service)
Hypertherm (S) Pte Ltd.
No. 19 Kaki Bukit Road 2
K.B. Warehouse Complex
Singapore 417847, Republic of Singapore
65 6 841 2489 Tel
65 6 841 2490 Fax
65 6 841 2489 (Technical Service)
Hypertherm (Shanghai) Trading Co., Ltd.
Unit 13
0
8-09, Careri Building
432 W
est Huai Hai Road
Shanghai, 200052
PR China
8
6-21 52
5
8 333
0/1 Tel
86-21 5258 3332 Fax
Hyper
therm
Branch of Hypertherm, UK, UC
P
O B
ox 244
W
igan, Lancashire, England WN8 7W
U
00 800 3324 9737 Tel
00 8
00 4
973 7329 Fax
00 8
00 4
973 78
4
3 (T
echnical Ser
vice)
F
rance (Representative office)
15 Impasse des Rosiers
95610 Eragny, France
0
0 800 3324 9737 Tel
00 800 4973 7329 Fax
H
ypertherm S.r.l.
Via Torino 2
20123 Milano, Italia
39 02 725 46 312 Tel
39 02 725 46 400 Fax
39 02 725 46 314 (Technical Service)
Hypertherm Europe B.V.
Vaartveld 9
4704 SE Roosendaal, Nederland
31 165 596907 Tel
31 165 596901 Fax
31 165 596908 Tel (Marketing)
31 165 596900 Tel (Technical Service)
00 800 49 73 7843 Tel (Technical Service)
Japan (Representative office)
801 Samty Will Building
2-40 Miyahara 1-Chome,
Yodogawa-ku, Osaka
532-0003, Japan
81 6 6170 2020 Tel
81 6 6170 2015 Fax
HYPERTHERM BRASIL LTDA.
Rua Jati, 33
CEP 07180-140 Cumbica
Guarulhos, SP - Brasil
5
5 11 6
4
82 1087 Tel
5
5 11 6
4
82 0
5
91 Fax
ELECTROMAGNETIC COMPATIBILITY (EMC)
E
MC INTRODUCTION
Hypertherm's CE-marked equipment is built
in compliance with standard EN50199. The
equipment should be installed and used in
accordance with the information below to
achieve electromagnetic compatibility.
The limits required by EN50199 may not be
adequate to completely eliminate interference when the affected equipment is in
close proximity or has a high degree of
sensitivity. In such cases it may be necessary to use other measures to further
reduce interference.
This plasma equipment is designed for use
only in an industrial environment.
INSTALLATION AND USE
The user is responsible for installing and
using the plasma equipment according to
the manufacturer's instructions. If electromagnetic disturbances are detected then it
shall be the responsibility of the user to resolve the situation with the technical assistance of the manufacturer. In some cases
this remedial action may be as simple as
earthing the cutting circuit, see Earthing of
Workpiece. In other cases it could involve
constructing an electromagnetic screen
enclosing the power source and the work
complete with associated input filters. In all
cases electromagnetic disturbances must
be reduced to the point where they are no
longer troublesome.
ASSESSMENT OF AREA
Before installing the equipment the user
shall make an assessment of potential electromagnetic problems in the surrounding
area. The following shall be taken into
account:
a.
Other supply cables, control cables,
signalling and telephone cables; above,
below and adjacent to the cutting equipment.
b. Radio and television transmitters and
receivers.
c. Computer and other control equipment.
d. Safety critical equipment, for example
guarding of industrial equipment.
e. Health of the people around, for
example the use of pacemakers and hearing aids.
f. Equipment used for calibration or measurement.
g. Immunity of other equipment in the environment. User shall ensure that other
equipment being used in the environment is
compatible.
This may require additional
protection measures.
h. Time of day that cutting or other activities
are to be carried out.
E
arthing of Workpiece
Where the workpiece is not bonded to earth
for electrical safety, nor connected to earth
because of its size and position, for example,
ship's hull or building steelwork, a connection
bonding the workpiece to earth may reduce
emissions in some, but not all instances.
Care should be taken to prevent the earthing
of the workpiece increasing the risk of injury
to users, or damage to other electrical equipment. Where necessary, the connection of
the workpiece to earth should be made by a
direct connection to the workpiece, but in
some countries where direct connection is
not permitted, the bonding should be
achieved by suitable capacitances selected
according to national regulations.
Note. The cutting circuit may or may not be
earthed for safety reasons. Changing the
earthing arrangements should only be authorized by a person who is competent to
assess whether the changes will increase
the risk of injury, for example, by allowing
parallel cutting current return paths which
may damage the earth circuits of other
equipment. Further guidance is given in
IEC/TS 62081 Arc Welding Equipment
Installation and Use.
Screening and Shielding
Selective screening and shielding of other
cables and equipment in the surrounding
area may alleviate problems of interference.
Screening of the entire plasma cutting
installation may be considered for special
applications.
T
he size of the surrounding area to be
considered will depend on the structure of
the building and other activities that are taking place. The surrounding area may extend
beyond the boundaries of the premises.
METHODS OF REDUCING EMISSIONS
Mains Supply
Cutting equipment must be connected to the
mains supply according to the manufacturer's recommendations. If interference
occurs, it may be necessary to take
additional precautions such as filtering of
the mains supply. Consideration should be
given to shielding the supply cable of permanently installed cutting equipment, in
metallic conduit or equivalent. Shielding
should be electrically continuous throughout
its length. The shielding should be connected to the cutting mains supply so that good
electrical contact is maintained between the
conduit and the cutting power source
enclosure.
Maintenance of Cutting Equipment
The cutting equipment must be routinely
maintained according to the manufacturer's
recommendations. All access and service
doors and covers should be closed and
properly fastened when the cutting
equipment is in operation. The cutting
equipment should not be modified in any
way except for those changes and adjustments covered in the manufacturer's
instructions. In particular, the spark gaps of
arc striking and stabilizing devices should
be adjusted and maintained according to
the manufacturer's recommendations.
Cutting Cables
The cutting cables should be kept as short
as possible and should be positioned close
together
, running at or close to the floor
level.
Equipotential Bonding
Bonding of all metallic components in the
cutting installation and adjacent to it should
be considered. However, metallic components bonded to the workpiece will increase
the risk that the operator could receive a
shock by touching these metallic
components and the electrode at the same
time.
The operator should be insulated from
all such bonded metallic components.
Hypertherm Plasma Systems i
01/25/05
WARRANTY
ii Hypertherm Plasma Systems
9-01
WARNING
Genuine Hypertherm parts are the factory-recommended
replacement parts for your Hypertherm system. Any damage
caused by the use of other than genuine Hypertherm parts may
n
ot be covered by the Hypertherm warranty.
WARNING
You are responsible for the safe use of the Product.
H
ypertherm does not and cannot make any guarantee or
warranty regarding the safe use of the Product in your
environment.
GENERAL
Hypertherm, Inc. warrants that its Products shall be free from
defects in materials and workmanship, if Hypertherm is notified
of a defect (i) with respect to the power supply within a period
of two (2) years from the date of its delivery to you, with the
exception of Powermax Series power supplies, which shall be
within a period of three (3) years from the date of delivery to
you, and (ii) with respect to the torch and leads within a period
of one (1) year from its date of delivery to you. This warranty
shall not apply to any Product which has been incorrectly
installed, modified, or otherwise damaged. Hypertherm, at its
sole option, shall repair, replace, or adjust, free of charge, any
defective Products covered by this warranty which shall be
returned with Hypertherm’s prior authorization (which shall not
be unreasonably withheld), properly packed, to Hypertherm’s
place of business in Hanover, New Hampshire, or to an
authorized Hypertherm repair facility, all costs, insurance and
freight prepaid. Hypertherm shall not be liable for any repairs,
replacement, or adjustments of Products covered by this
warranty, except those made pursuant to this paragraph or with
Hypertherm’s prior written consent.
The warranty above is
exclusive and is in lieu of all other warranties, express,
implied, statutory, or otherwise with respect to the
Products or as to the results which may be obtained
therefrom, and all implied warranties or conditions of
quality or of merchantability or fitness for a particular
purpose or against infringement. The foregoing shall
constitute the sole and exclusive remedy for any breach
by Hypertherm of its warranty. Distributors/OEMs may of
fer
different or additional warranties, but Distributors/OEMs are
not authorized to give any additional warranty protection to you
or make any representation to you purporting to be binding
upon Hypertherm.
P
ATENT INDEMNITY
Except only in cases of products not manufactured by
Hypertherm or manufactured by a person other than
Hypertherm not in strict conformity with Hypertherm’
s
specifications and in cases of designs, processes, formulae, or
combinations not developed or purported to be developed by
Hypertherm, Hypertherm will defend or settle, at its own
expense, any suit or proceeding brought against you alleging
that the use of the Hypertherm product, alone and not in
combination with any other product not supplied by
Hypertherm, infringes any patent of any third party. You shall
n
otify Hypertherm promptly upon learning of any action or
t
hreatened action in connection with any such alleged
infringement, and Hypertherm’s obligation to indemnify shall be
conditioned upon Hypertherm’s sole control of, and the
indemnified party’s cooperation and assistance in, the defense
o
f the claim.
LIMITATION OF LIABILITY
In no event shall Hypertherm be liable to any person or
entity for any incidental, consequential, indirect, or
punitive damages (including but not limited to lost profits)
regardless of whether such liability is based on breach of
contract, tort, strict liability, breach of warranties, failure of
essential purpose or otherwise and even if advised of the
possibility of such damages.
LIABILITY
CAP
In no event shall Hypertherm’s liability, whether such
liability is based on breach of contract, tort, strict liability,
breach of warranties, failure of essential purpose or
otherwise, for any claim action suit or proceeding arising
out of or relating to the use of the Products exceed in the
aggregate the amount paid for the Products that gave rise
to such claim.
INSURANCE
At all times you will have and maintain insurance in such
quantities and types, and with coverage sufficient and
appropriate to defend and to hold Hypertherm harmless in
the event of any cause of action arising from the use of the
Products.
NATIONAL AND LOCAL CODES
National and Local codes governing plumbing and electrical
installation shall take precedent over any instructions
contained in this manual. In no event shall Hypertherm be
liable for injury to persons or property damage by reason of any
code violation or poor work practices.
TRANSFER OF RIGHTS
You may transfer any remaining rights you may have
hereunder only in connection with the sale of all or substantially
all of your assets or capital stock to a successor in interest who
agrees to be bound by all of the terms and conditions of this
W
arranty.
TABLE OF CONTENTS
Electromagnetic Compatibility ..................................................................................................................................i
Warranty......................................................................................................................................................................ii
Section 1 SAFETY
ecognize Safety Information...................................................................................................................................1-2
R
Follow Safety Instructions.........................................................................................................................................1-2
Cutting Can Cause Fire or Explosion .......................................................................................................................1-2
Electric Shock Can Kill..............................................................................................................................................1-3
Cutting Can Produce Toxic Fumes ...........................................................................................................................1-3
A Plasma Arc Can Cause Injury and Burns ..............................................................................................................1-4
Arc Rays Can Burn Eyes and Skin ...........................................................................................................................1-4
Grounding Safety......................................................................................................................................................1-4
Compressed Gas Equipment Safety ........................................................................................................................1-5
Gas Cylinders Can Explode If Damaged ..................................................................................................................1-5
Noise Can Damage Hearing.....................................................................................................................................1-5
Pacemaker and Hearing Aid Operation ....................................................................................................................1-5
Plasma Arc Can Damage Frozen Pipes................................................................................................................1-5
A
Additional Safety Information....................................................................................................................................1-5
Warning Label...........................................................................................................................................................1-6
Section 1a SÉCURITÉ
Identifier les consignes de sécurité.........................................................................................................................1a-2
Suivre les instructions de sécurité ..........................................................................................................................1a-2
Danger Avertissement Précaution ........................................................................................................................1a-2
Le coupage peut provoquer un incendie ou une explosion ....................................................................................1a-2
Prévention des incendies, Prévention des explosions...................................................................................1a-2
Risque d’explosion argon-hydrogène et méthane..........................................................................................1a-2
Détonation de l’hydrogène lors du coupage de l’aluminium...........................................................................1a-2
Les chocs électriques peuvent être fatals...............................................................................................................1a-3
Prévention des chocs électriques ..................................................................................................................1a-3
Le coupage peut produire des vapeurs toxiques....................................................................................................1a-3
’arc plasma peut provoquer des blessures ou des brûlures
L
orches à allumage instantané ......................................................................................................................1a-4
T
Les rayons de l’arc peuvent brûler les yeux et la peau...........................................................................................1a-4
Protection des yeux, Protection de la peau, Zone de coupage ....................................................................1a-4
Mise à la masse et à la terre...................................................................................................................................1a-4
Câble de retour, Table de travail, Alimentation...............................................................................................1a-4
Sécurité des bouteilles de gaz comprimé ...............................................................................................................1a-5
Les bouteilles de gaz comprimé peuvent exploser en cas de dommages
Le bruit peut provoquer des problèmes auditifs......................................................................................................1a-5
Pacemakers et prothèses auditives
Un arc plasma peut endommager les tuyaux gelés................................................................................................1a-5
Étiquette de sécurité
...............................................................................................................................................1a-6
........................................................................................................................
.................................................................................
.............................................................
1a-4
1a-5
1a-5
Section 1b
Reconocimiento de información de seguridad........................................................................................................1b-2
Siga las instrucciones de seguridad .......................................................................................................................1b-2
SEGURIDAD
powermax1250 Service Manual iii
4
TABLE OF CONTENTS
Peligro…Advertencia…Precaución ........................................................................................................................1b-2
Los cortes pueden provocar incendios o explosiones ............................................................................................1b-2
Prevención ante el fuego, Prevención ante explosiones ...............................................................................1b-2
Peligro de explosión argón-hidrógeno y metano............................................................................................1b-2
Detonación de hidrógeno con el corte de aluminio ........................................................................................1b-2
El choque eléctrico puede provocar la muerte .......................................................................................................1b-3
Prevención ante el electrochoque..................................................................................................................1b-3
Los cortes pueden producir humos tóxicos ............................................................................................................1b-3
El arco de plasma puede causar lesiones y quemaduras ......................................................................................1b-4
Antorchas de encendido instantáneo.............................................................................................................1b-4
Los rayos del arco pueden producir quemaduras en los ojos y en la piel ..............................................................1b-4
Protección para los ojos, Protección para la piel, Área de corte....................................................................1b-4
Seguridad de toma a tierra .....................................................................................................................................1b-4
Cable de trabajo, Mesa de trabajo, Potencia primaria de entrada.................................................................1b-4
Seguridad de los equipos de gas comprimido........................................................................................................1b-5
Los cilindros de gas pueden explotar si están dañados .........................................................................................1b-5
El ruido puede deteriorar la audición ......................................................................................................................1b-5
Operación de marcapasos y de audífonos .............................................................................................................1b-5
Un arco plasma puede dañar tubos congelados ....................................................................................................1b-5
Etiqueta de advertencia ..........................................................................................................................................1b-6
Section 2 SPECIFICATIONS
Power supply ............................................................................................................................................................2-2
Dimensions and weight ....................................................................................................................................2-3
T80 torches...............................................................................................................................................................2-4
Dimensions ......................................................................................................................................................2-5
Symbols and markings .............................................................................................................................................2-6
S Mark.............................................................................................................................................................2-6
IEC symbols .....................................................................................................................................................2-6
Section 3 MAINTENANCE
Controls and indicators .............................................................................................................................................3-3
Indicator LEDs..................................................................................................................................................3-3
Theory of operation...................................................................................................................................................3-4
General ............................................................................................................................................................3-4
Functional description ......................................................................................................................................3-4
Sequence of operation .....................................................................................................................................3-5
Troubleshooting preparation.....................................................................................................................................3-6
Test equipment.................................................................................................................................................3-6
Troubleshooting procedures and sequence.....................................................................................................3-6
External inspection...........................................................................................................................................3-6
Internal inspection
Initial resistance check..............................................................................................................................................3-7
Check power switch .........................................................................................................................................3-8
Hypertherm
Indicator LEDS and device tests ......................................................................................................................3-9
IGBT test preparation.....................................................................................................................................3-10
IGBT
device test using the Hypertherm tester ...............................................................................................3-10
Troubleshoot the Hypertherm IGBT tester .....................................................................................................3-11
Schematic for building an IGBT tester............................................................................................................3-11
IGBT device test using non-Hypertherm tester ..............................................................................................3-12
Troubleshooting guide ............................................................................................................................................3-14
............................................................................................................................................3-7
IGBT tester ...................................................................................................................................3-9
iv powermax1250 Service Manual
4
TABLE OF CONTENTS
Control board LEDs........................................................................................................................................3-20
est 1 – voltage input .....................................................................................................................................3-22
T
Test 2 – voltage balance ................................................................................................................................3-23
Test 3 – output diodes ....................................................................................................................................3-24
Test 4 – pilot arc IGBT (Q8) ...........................................................................................................................3-25
Test 5 – inverter IGBT (Q6) and PFC IGBT (Q7) ...........................................................................................3-26
est 6 – flyback circuit ....................................................................................................................................3-27
T
Test 7 – torch stuck open (TSO) ....................................................................................................................3-28
Test 8 – plasma start ......................................................................................................................................3-29
Test 9 – torch cap sensor ...............................................................................................................................3-29
Test 10 – gas solenoid ...................................................................................................................................3-30
Test 11 – incoming line voltage (VACR) .........................................................................................................3-30
Test 12 – pressure switch...............................................................................................................................3-30
Test 13 – fan...................................................................................................................................................3-30
Test 14 – AUX switch .....................................................................................................................................3-31
Test 15 – flyback circuit failure .......................................................................................................................3-31
T60 hand torch connector pinout diagrams and assembly .....................................................................................3-32
T60M machine torch connector pinout diagrams and assembly ............................................................................3-33
Component replacement ........................................................................................................................................3-34
Power cord replacement ................................................................................................................................3-34
Torch replacement..........................................................................................................................................3-35
Filter element replacement.............................................................................................................................3-37
Work cable replacement ................................................................................................................................3-38
Capacitor replacement ...................................................................................................................................3-39
Power board removal and replacement .........................................................................................................3-40
Heat sink component replacement.................................................................................................................3-43
Section 4 PARTS – POWER SUPPLY
Exterior .....................................................................................................................................................................4-2
Interior right side .......................................................................................................................................................4-3
Back interior right side ..............................................................................................................................................4-4
Interior fan side .........................................................................................................................................................4-5
Heat sink assembly...................................................................................................................................................4-6
Recommended spare parts ......................................................................................................................................4-7
Section 5 PARTS – TORCH AND CONSUMABLES
T80 hand torch assembly .........................................................................................................................................5-2
T80M achine torch assembly....................................................................................................................................5-4
T80 consumable configurations................................................................................................................................5-6
T80M consumable configurations.............................................................................................................................5-7
Recommended spare parts ......................................................................................................................................5-8
Section 6 WIRING DIAGRAMS
Timing diagrams .......................................................................................................................................................6-2
Electrical schematics
................................................................................................................................................
6-5
powermax1250 Service Manual v
4
TABLE OF CONTENTS
vi powermax1250 Service Manual
Hypertherm Plasma Systems 1-1
Section 1
SAFETY
In this section:
Recognize Safety Information...................................................................................................................................1-2
Follow Safety Instructions.........................................................................................................................................1-2
Cutting Can Cause Fire or Explosion .......................................................................................................................1-2
Electric Shock Can Kill..............................................................................................................................................1-3
Cutting Can Produce Toxic Fumes ...........................................................................................................................1-3
A Plasma Arc Can Cause Injury and Burns ..............................................................................................................1-4
Arc Rays Can Burn Eyes and Skin ...........................................................................................................................1-4
Grounding Safety......................................................................................................................................................1-4
Compressed Gas Equipment Safety ........................................................................................................................1-5
Gas Cylinders Can Explode If Damaged ..................................................................................................................1-5
Noise Can Damage Hearing.....................................................................................................................................1-5
Pacemaker and Hearing Aid Operation ....................................................................................................................1-5
A Plasma Arc Can Damage Frozen Pipes ................................................................................................................1-5
Additional Safety Information....................................................................................................................................1-5
Warning Label...........................................................................................................................................................1-6
SAFETY
1-2 Hypertherm Plasma Systems
11-98
SAFETY
RECOGNIZE SAFETY INFORMATION
The symbols shown in this section are used to
identify potential hazards. When you see a safety
symbol in this manual or on your machine, understand
the potential for personal injury, and follow the related
instructions to avoid the hazard.
FOLLOW SAFETY INSTRUCTIONS
Read carefully all safety messages in this manual and
safety labels on your machine.
• Keep the safety labels on your machine in good
condition. Replace missing or damaged labels
immediately.
• Learn how to operate the machine and how to use
the controls properly. Do not let anyone operate it
without instruction.
• Keep your machine in proper working condition.
Unauthorized modifications to the machine may
affect safety and machine service life.
DANGER WARNING CAUTION
A signal word DANGER or WARNING is used with a
safety symbol. DANGER identifies the most serious
hazards.
• DANGER and WARNING safety labels are located
on your machine near specific hazards.
• WARNING safety messages precede related
instructions in this manual that may result in injury
or death if not followed correctly.
• CAUTION safety messages precede related
instructions in this manual that may result in
damage to equipment if not followed correctly.
Fire Prevention
• Be sure the area is safe before doing any cutting.
Keep a fire extinguisher nearby.
• Remove all flammables within 35 feet (10 m) of the
cutting area.
• Quench hot metal or allow it to cool before handling
or before letting it touch combustible materials.
• Never cut containers with potentially flammable
materials inside – they must be emptied and
properly cleaned first.
• Ventilate potentially flammable atmospheres before
cutting.
• When cutting with oxygen as the plasma gas, an
exhaust ventilation system is required.
Explosion Prevention
• Do not use the plasma system if explosive dust or
vapors may be present.
• Do not cut pressurized cylinders, pipes, or any
closed container.
• Do not cut containers that have held combustible
materials.
CUTTING CAN CAUSE FIRE OR EXPLOSION
WARNING
Explosion Hazard
Argon-Hydrogen and Methane
Hydrogen and methane are flammable gases that
present an explosion hazard. Keep flames away from
cylinders and hoses that contain methane or hydrogen
mixtures. Keep flames and sparks away from the torch
when using methane or argon-hydrogen plasma.
WARNING
Hydrogen Detonation with Aluminum Cutting
• When cutting aluminum underwater, or with the
water touching the underside of the aluminum, free
hydrogen gas may collect under the workpiece and
detonate during plasma cutting operations.
• Install an aeration manifold on the floor of the water
table to eliminate the possibility of hydrogen
detonation. Refer to the Appendix section of this
manual for aeration manifold details.
Touching live electrical parts can cause a fatal shock
or severe burn.
• Operating the plasma system completes an
electrical circuit between the torch and the
workpiece. The workpiece and anything touching
the workpiece are part of the electrical circuit.
• Never touch the torch body, workpiece or the water
in a water table when the plasma system is
operating.
Electric Shock Prevention
All Hypertherm plasma systems use high voltage
in the cutting process (200 to 400 VDC are
common). Take the following precautions when
operating this system:
• Wear insulated gloves and boots, and keep your
body and clothing dry.
• Do not stand, sit or lie on – or touch – any wet
surface when using the plasma system.
• Insulate yourself from work and ground using dry
insulating mats or covers big enough to prevent any
physical contact with the work or ground. If you must
work in or near a damp area, use extreme caution.
• Provide a disconnect switch close to the power
supply with properly sized fuses. This switch allows
the operator to turn off the power supply quickly in
an emergency situation.
• When using a water table, be sure that it is correctly
connected to earth ground.
ELECTRIC SHOCK CAN KILL
• Install and ground this equipment according to the
instruction manual and in accordance with national
and local codes.
• Inspect the input power cord frequently for damage
or cracking of the cover. Replace a damaged power
cord immediately. Bare wiring can kill.
• Inspect and replace any worn or damaged torch
leads.
• Do not pick up the workpiece, including the waste
cutoff, while you cut. Leave the workpiece in place
or on the workbench with the work cable attached
during the cutting process.
• Before checking, cleaning or changing torch parts,
disconnect the main power or unplug the power
supply.
• Never bypass or shortcut the safety interlocks.
• Before removing any power supply or system
enclosure cover, disconnect electrical input power.
Wait 5 minutes after disconnecting the main power
to allow capacitors to discharge.
• Never operate the plasma system unless the power
supply covers are in place. Exposed power supply
connections present a severe electrical hazard.
• When making input connections, attach proper
grounding conductor first.
• Each Hypertherm plasma system is designed to be
used only with specific Hypertherm torches. Do not
substitute other torches which could overheat and
present a safety hazard.
Cutting can produce toxic fumes and gases that
deplete oxygen and cause injury or death.
• Keep the cutting area well ventilated or use an
approved air-supplied respirator.
• Do not cut in locations near degreasing, cleaning or
spraying operations. The vapors from certain
chlorinated solvents decompose to form phosgene
gas when exposed to ultraviolet radiation.
• Do not cut metal coated or containing toxic materials, such as zinc (galvanized), lead, cadmium or
CUTTING CAN PRODUCE TOXIC FUMES
beryllium, unless the area is well ventilated and the
operator wears an air-supplied respirator. The
coatings and any metals containing these elements
can produce toxic fumes when cut.
• Never cut containers with potentially toxic materials
inside – they must be emptied and properly cleaned
first.
• 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.
Hypertherm Plasma Systems 1-3
8-99
SAFETY
SAFETY
1-4 Hypertherm Plasma Systems
5/6/02
SAFETY
Instant-On Torches
Plasma arc comes on immediately when the torch
switch is activated.
A PLASMA ARC CAN CAUSE INJURY AND BURNS
The plasma arc will cut quickly through gloves and
skin.
• Keep away from the torch tip.
• Do not hold metal near the cutting path.
• Never point the torch toward yourself or others.
Eye Protection Plasma arc rays produce intense
visible and invisible (ultraviolet and infrared) rays that
can burn eyes and skin.
• Use eye protection in accordance with applicable
national or local codes.
• Wear eye protection (safety glasses or goggles with
side shields, and a welding helmet) with appropriate
lens shading to protect your eyes from the arc’s
ultraviolet and infrared rays.
Lens Shade
Arc Current AWS (USA) ISO 4850
Up to 100 A No. 8 No. 11
100-200 A No. 10 No. 11-12
200-400 A No. 12 No. 13
Over 400 A No. 14 No. 14
ARC RAYS CAN BURN EYES AND SKIN
Skin Protection Wear protective clothing to protect
against burns caused by ultraviolet light, sparks and
hot metal.
• Gauntlet gloves, safety shoes and hat.
• Flame-retardant clothing to cover all exposed areas.
• Cuffless trousers to prevent entry of sparks and
slag.
• Remove any combustibles, such as a butane lighter
or matches, from your pockets before cutting.
Cutting Area Prepare the cutting area to reduce
reflection and transmission of ultraviolet light:
• Paint walls and other surfaces with dark colors to
reduce reflection.
• Use protective screens or barriers to protect others
from flash and glare.
• Warn others not to watch the arc. Use placards or
signs.
Work Cable Attach the work cable securely to the
workpiece or the work table with good metal-to-metal
contact. Do not connect it to the piece that will fall
away when the cut is complete.
Work Table Connect the work table to an earth
ground, in accordance with appropriate national or
local electrical codes.
GROUNDING SAFETY
Input Power
• Be sure to connect the power cord ground wire to
the ground in the disconnect box.
• If installation of the plasma system involves
connecting the power cord to the power supply, be
sure to connect the power cord ground wire
properly.
• Place the power cord's ground wire on the stud first,
then place any other ground wires on top of the
power cord ground. Fasten the retaining nut tightly.
• Tighten all electrical connections to avoid excessive
heating.
SAFETY
Hypertherm Plasma Systems 1-5
11-98
SAFETY
• Never lubricate cylinder valves or regulators with oil
or grease.
• Use only correct gas cylinders, regulators, hoses
and fittings designed for the specific application.
• Maintain all compressed gas equipment and
associated parts in good condition.
• Label and color-code all gas hoses to identify the
type of gas in each hose. Consult applicable
national or local codes.
GAS CYLINDERS CAN
EXPLODE IF DAMAGED
COMPRESSED GAS EQUIPMENT SAFETY
Gas cylinders contain gas under high pressure. If
damaged, a cylinder can explode.
• Handle and use compressed gas cylinders in
accordance with applicable national or local codes.
• Never use a cylinder that is not upright and secured
in place.
• Keep the protective cap in place over valve except
when the cylinder is in use or connected for use.
• Never allow electrical contact between the plasma
arc and a cylinder.
• Never expose cylinders to excessive heat, sparks,
slag or open flame.
• Never use a hammer, wrench or other tool to open
a stuck cylinder valve.
Prolonged exposure to noise from cutting or gouging
can damage hearing.
• Use approved ear protection when using plasma
system.
• Warn others nearby about the noise hazard.
NOISE CAN DAMAGE HEARING
Pacemaker and hearing aid operation can be affected
by magnetic fields from high currents.
Pacemaker and hearing aid wearers should consult a
doctor before going near any plasma arc cutting and
gouging operations.
To reduce magnetic field hazards:
• Keep both the work cable and the torch lead to one
side, away from your body.
• Route the torch leads as close as possible to the
work cable.
• Do not wrap or drape the torch lead or work cable
around your body.
• Keep as far away from the power supply as
possible.
PACEMAKER AND HEARING AID OPERATION
ADDITIONAL SAFETY INFORMATION
1. ANSI Standard Z49.1, Safety in Welding and Cutting, American
Welding Society, 550 LeJeune Road
P.O. Box 351020, Miami, FL 33135
2. ANSI Standard Z49.2, Fire Prevention in the Use of Cutting and
Welding Processes, American National Standards Institute
1430 Broadway, New York, NY 10018
3. ANSI Standard Z87.1, Safe Practices for Occupation and
Educational Eye and Face Protection, American National
Standards Institute, 1430 Broadway, New York, NY 10018
4. AWS F4.1, Recommended Safe Practices for the Preparation for
Welding and Cutting of Containers and Piping That Have Held
Hazardous Substances, American Welding Society
550 LeJeune Road, P.O. Box 351040, Miami, FL 33135
5. AWS F5.2, Recommended Safe Practices for Plasma Arc
Cutting, American Welding Society
550 LeJeune Road, P.O. Box 351040, Miami, FL 33135
6. CGA Pamphlet P-1, Safe Handling of Compressed Gases in
Cylinders, Compressed Gas Association
1235 Jefferson Davis Highway, Arlington, VA 22202
7. CSA Standard W117.2, Code for Safety in Welding and Cutting,
Canadian Standards Association Standard Sales
178 Rexdale Boulevard, Rexdale, Ontario M9W 1R3, Canada
8. NFPA Standard 51B, Cutting and Welding Processes, National
Fire Protection Association
470 Atlantic Avenue, Boston, MA 02210
9. NFPA Standard 70–1978, National Electrical Code, National Fire
Protection Association, 470 Atlantic Avenue, Boston, MA 02210
10. OSHA, Safety and Health Standards, 29FR 1910
U.S. Government Printing Office, Washington, D.C. 20402
A PLASMA ARC CAN DAMAGE FROZEN PIPES
Frozen pipes may be damaged or can burst if you
attempt to thaw them with a plasma torch.
SAFETY
1-6 Hypertherm Plasma Systems
8-99
SAFETY
WARNING LABEL
This warning label is affixed to some power supplies. It is
important that the operator and maintenance technician
understand the intent of these warning symbols as described.
The numbered text corresponds to the numbered boxes on
the label.
1. Cutting sparks can cause explosion or fire.
1.1 Keep flammables away from cutting.
1.2 Keep a fire extinguisher nearby, and have
a watchperson ready to use it.
1.3 Do not cut on any closed containers.
2. The plasma arc can cause injury and
burns.
2.1 Turn off power before disassembling torch.
2.2 Do not hold the material near cutting path.
2.3 Wear complete body protection.
3. Electric shock from torch or wiring can kill.
Protect yourself from electric shock.
3.1 Wear insulating gloves. Do not wear wet or
damaged gloves.
3.2 Insulate yourself from work and ground.
3.3 Disconnect input plug or power before
working on machine.
4. Breathing cutting fumes can be hazardous
to your health.
4.1 Keep your head out of the fumes.
4.2 Use forced ventilation or local exhaust to
remove the fumes.
4.3 Use ventilating fan to remove the fumes.
5. Arc rays can burn eyes and injure skin.
5.1 Wear hat and safety glasses. Use ear
protection and button shirt collar. Use
welding helmet with correct shade of filter.
Wear complete body protection.
6. Become trained and read the instructions
before working on the machine or cutting.
7. Do not remove or paint over (cover)
warning labels.
110391 Rev A
Hypertherm Systèmes plasma 1a-1
2/12/01
Section 1a
SÉCURITÉ
Dans cette section :
Identifier les consignes de sécurité.........................................................................................................................1a-2
Suivre les instructions de sécurité ..........................................................................................................................1a-2
Danger Avertissement Précaution ........................................................................................................................1a-2
Le coupage peut provoquer un incendie ou une explosion ....................................................................................1a-2
Prévention des incendies, Prévention des explosions...................................................................................1a-2
Risque d’explosion argon-hydrogène et méthane..........................................................................................1a-2
Détonation de l’hydrogène lors du coupage de l’aluminium...........................................................................1a-2
Les chocs électriques peuvent être fatals...............................................................................................................1a-3
Prévention des chocs électriques ..................................................................................................................1a-3
Le coupage peut produire des vapeurs toxiques....................................................................................................1a-3
L’arc plasma peut provoquer des blessures ou des brûlures .................................................................................1a-4
Torches à allumage instantané ......................................................................................................................1a-4
Les rayons de l’arc peuvent brûler les yeux et la peau...........................................................................................1a-4
Protection des yeux, Protection de la peau, Zone de coupage ....................................................................1a-4
Mise à la masse et à la terre...................................................................................................................................1a-4
Câble de retour, Table de travail, Alimentation...............................................................................................1a-4
Sécurité des bouteilles de gaz comprimé ...............................................................................................................1a-5
Les bouteilles de gaz comprimé peuvent exploser en cas de dommages .............................................................1a-5
Le bruit peut provoquer des problèmes auditifs......................................................................................................1a-5
Pacemakers et prothèses auditives........................................................................................................................1a-5
Un arc plasma peut endommager les tuyaux gelés................................................................................................1a-5
Étiquette de sécurité ...............................................................................................................................................1a-6
SÉCURITÉ
1a-2 Hypertherm Systèmes plasma
2/12/01
IDENTIFIER LES CONSIGNES DE SÉCURITÉ
Les symboles indiqués dans cette section sont utilisés pour
identifier les risques éventuels. Si vous trouvez un symbole
de sécurité, que ce soit dans ce manuel ou sur
l’équipement, soyez conscient des risques de blessures et
suivez les instructions correspondantes afin d’éviter ces
risques.
SUIVRE LES INSTRUCTIONS DE SÉCURITÉ
Lire attentivement toutes les consignes de sécurité dans le
présent manuel et sur les étiquettes de sécurité se trouvant
sur la machine.
• Les étiquettes de sécurité doivent rester lisibles.
Remplacer immédiatement les étiquettes manquantes ou
abîmées.
• Apprendre à faire fonctionner la machine et à utiliser
correctement les commandes. Ne laisser personne utiliser
la machine sans connaître son fonctionnement.
• Garder la machine en bon état. Des modifications non
autorisées sur la machine peuvent engendrer des
problèmes de sécurité et raccourcir la durée d’utilisation
de l’équipement.
DANGER AVERTISSEMENT PRÉCAUTION
Les signaux DANGER ou AVERTISSEMENT sont utilisés
avec un symbole de sécurité, DANGER correspondant aux
risques les plus sérieux.
• Les étiquettes de sécurité DANGER et AVERTISSEMENT
sont situées sur la machine pour signaler certains
dangers spécifiques.
• Les messages d’AVERTISSEMENT précèdent les
instructions d’utilisation expliquées dans ce manuel et
signalent les risques de blessures ou de mort au cas où
ces instructions ne seraient pas suivies correctement.
• Les messages de PRÉCAUTION précèdent les
instructions d’utilisation contenues dans ce manuel et
signalent que le matériel risque d’être endommagé si les
instructions ne sont pas suivies correctement.
Prévention des incendies
• Avant de commencer, s’assurer que la zone de coupage
ne présente aucun danger. Conserver un extincteur à
proximité.
• Éloigner toute matière inflammable à une distance d’au
moins 10 m du poste de coupage.
• Tremper le métal chaud ou le laisser refroidir avant de
le manipuler ou avant de le mettre en contact avec des
matériaux combustibles.
• Ne jamais couper des récipients pouvant contenir des
matières inflammables avant de les avoir vidés et
nettoyés correctement.
• Aérer toute atmosphère potentiellement inflammable
avant d’utiliser un système plasma.
• Lors de l’utilisation d’oxygène comme gaz plasma, un
système de ventilation par aspiration est nécessaire.
Prévention des explosions
• Ne pas couper en présence de poussière ou de vapeurs.
• Ne pas couper de bouteilles, de tuyaux ou autres
récipients fermés et pressurisés.
• Ne pas couper de récipients contenant des matières
combustibles.
LE COUPAGE PEUT PROVOQUER UN INCENDIE
OU UNE EXPLOSION
AVERTISSEMENT
Risque d’explosion
argon-hydrogène et méthane
L’hydrogène et le méthane sont des gaz inflammables et
potentiellement explosifs. Conserver à l’écart de toute
flamme les bouteilles et tuyaux contenant des mélanges à
base d’hydrogène ou de méthane. Maintenir toute flamme
et étincelle à l’écart de la torche lors de l’utilisation d’un
plasma d’argon-hydrogène ou de méthane.
AVERTISSEMENT
Détonation de l’hydrogène lors du
coupage de l’aluminium
• Lors du coupage de l’aluminium sous l’eau, ou si l’eau
touche la partie inférieure de la pièce d’aluminium, de
l’hydrogène libre peut s’accumuler sous la pièce à couper
et détonner lors du coupage plasma.
• Installer un collecteur d’aération au fond de la table à eau
afin d’éliminer les risques de détonation de l’hydrogène.
Se référer à l’annexe du manuel pour plus de
renseignements sur les collecteurs d’aération.
SÉCURITÉ
Hypertherm Systèmes plasma 1a-3
2/12/01
Toucher une pièce électrique sous tension peut provoquer
un choc électrique fatal ou des brûlures graves.
• La mise en fonctionnement du système plasma ferme un
circuit électrique entre la torche et la pièce à couper. La
pièce à couper et tout autre élément en contact avec cette
pièce font partie du circuit électrique.
• Ne jamais toucher le corps de la torche, la pièce à couper
ou l’eau de la table à eau pendant le fonctionnement du
système plasma.
Prévention des chocs électriques
Tous les systèmes plasma Hypertherm utilisent des hautes
tensions pour le coupage (souvent de 200 à 400 V). On
doit prendre les précautions suivantes quand on utilise le
système plasma :
• Porter des bottes et des gants isolants et garder le corps
et les vêtements au sec.
• Ne pas se tenir, s’asseoir ou se coucher sur une surface
mouillée, ni la toucher quand on utilise le système plasma.
• S’isoler de la surface de travail et du sol en utilisant des
tapis isolants secs ou des couvertures assez grandes
pour éviter tout contact physique avec le travail ou le sol.
S’il s’avère nécessaire de travailler dans ou près d’un
endroit humide, procéder avec une extrême prudence.
• Installer un sectionneur avec fusibles appropriés, à
proximité de la source de courant. Ce dispositif permet à
l’opérateur d’arrêter rapidement la source de courant en
cas d’urgence.
• En cas d’utilisation d’une table à eau, s’assurer que cette
dernière est correctement mise à la terre.
LES CHOCS ÉLECTRIQUES PEUVENT ÊTRE FATALS
• Installer et mettre à la terre l’équipement selon les
instructions du présent manuel et conformément aux
codes électriques locaux et nationaux.
• Inspecter fréquemment le cordon d’alimentation primaire
pour s’assurer qu’il n’est ni endommagé, ni fendu.
Remplacer immédiatement un cordon endommagé.
Un câble dénudé peut tuer.
• Inspecter et remplacer les câbles de la torche qui sont
usés ou endommagés.
• Ne pas saisir la pièce à couper ni les chutes lors du
coupage. Laisser la pièce à couper en place ou sur la
table de travail, le câble de retour connecté lors du
coupage.
• Avant de vérifier, de nettoyer ou de remplacer les pièces
de la torche, couper l’alimentation ou débrancher la prise
de courant.
• Ne jamais contourner ou court-circuiter les verrouillages
de sécurité.
• Avant d’enlever le capot du système ou de la source de
courant, couper l’alimentation électrique. Attendre en
suite
5 minutes pour que les condensateurs se déchargent.
• Ne jamais faire fonctionner le système plasma sans que
les capots de la source de courant ne soient en place.
Les raccords exposés de la source de courant sont
extrêmement dangereux.
• Lors de l’installation des connexions, attacher tout d’abord
la prise de terre appropriée.
• Chaque système plasma Hypertherm est conçu pour être
utilisé uniquement avec des torches Hypertherm
spécifiques. Ne pas utiliser des torches inappropriées qui
pourraient surchauffer et présenter des risques pour la
sécurité.
Le coupage peut produire des vapeurs et des gaz toxiques
qui réduisent le niveau d’oxygène dans l’air et peuvent
provoquer des blessures, voire la mort.
• Conserver le poste de coupage bien aéré ou utiliser un
masque respiratoire homologué.
• Ne pas procéder au coupage près d’endroits où
s’effectuent le dégraissage, le nettoyage ou la vaporisation. Certains solvants chlorés se décomposent sous
l’effet des rayons ultraviolets et forment du phosgène.
• Ne pas couper des métaux peints ou contenant des
matières toxiques comme le zinc (galvanisé), le plomb, le
cadmium ou le béryllium, à moins que la zone de travail
LE COUPAGE PEUT PRODUIRE DES VAPEURS TOXIQUES
soit très bien ventilée et que l’opérateur porte un masque
respiratoire. Les revêtements et métaux contenant ces
matières peuvent produire des vapeurs toxiques lors du
coupage.
• Ne jamais couper de récipients pouvant contenir des
matières inflammables avant de les avoir vidés et
nettoyés correctement.
• Quand on utilise ce produit pour le soudage ou le
coupage, il dégage des fumées et des gaz qui
contiennent des produits chimiques qui, selon l’État de
Californie, provoquent des anomalies congénitales et,
dans certains cas, le cancer.
SÉCURITÉ
1a-4 Hypertherm Systèmes plasma
5/6/02
Torches à allumage instantané
L’arc plasma s’allume immédiatement après que la torche
soit mise en marche.
L’ARC PLASMA PEUT PROVOQUER DES BLESSURES OU DES BRÛLURES
L’arc plasma coupe facilement les gants et la peau.
• Rester éloigné de l’extrémité de la torche.
• Ne pas tenir de métal près de la trajectoire de coupe.
• Ne jamais pointer la torche vers soi ou d’autres
personnes.
Protection des yeux Les rayons de l’arc plasma
produisent de puissants rayons visibles ou invisibles
(ultraviolets et infrarouges) qui peuvent brûler les yeux et la
peau.
• Utiliser des lunettes de sécurité conformément aux codes
locaux ou nationaux en vigueur.
• Porter des lunettes de protection (lunettes ou masque
muni d’écrans latéraux et encore masque de soudure)
avec des verres teintés appropriés pour protéger les yeux
des rayons ultraviolets et infrarouges de l’arc.
Puissance des verres teintés
Courant de l’arc AWS (É.-U.) ISO 4850
Jusqu’à 100 A No8N
o
11
100-200 A No10 No11-12
200-400 A No12 No13
Plus de 400 A No14 No14
Protection de la peau Porter des vêtements de sécurité
pour se protéger contre les brûlures que peuvent causer les
rayons ultraviolets, les étincelles et le métal brûlant :
LES RAYONS DE L’ARC PEUVENT BRÛLER LES YEUX ET LA PEAU
• Gants à crispin, chaussures et casque de sécurité.
• Vêtements ignifuges couvrant toutes les parties exposées
du corps.
• Pantalon sans revers pour éviter que des étincelles ou
des scories puissent s’y loger.
• Avant le coupage, retirer de ses poches tout objet
combustible comme les briquets au butane ou les
allumettes.
Zone de coupage Préparer la zone de coupage afin de
réduire la réverbération et la transmission de la lumière
ultraviolette :
• Peindre les murs et autres surfaces de couleur sombre
pour réduire la réflexion de la lumière.
• Utiliser des écrans et autres dispositifs de protection afin
de protéger les autres personnes de la lumière et de la
réverbération.
• Prévenir les autres personnes de ne pas regarder l’arc.
Utiliser des affiches ou des panneaux.
Câble de retour Bien fixer le câble de retour (ou de
masse) à la pièce à couper ou à la table de travail de façon
à assurer un bon contact métal-métal. Ne pas fixer le câble
de retour à la partie de la pièce qui doit se détacher.
Table de travail Raccorder la table de travail à la terre,
conformément aux codes de sécurité locaux ou nationaux
appropriés.
MISE À LA MASSE ET À LA TERRE
Alimentation
• S’assurer que le fil de terre du cordon d’alimentation est
connecté à la terre dans le coffret du sectionneur.
• S’il est nécessaire de brancher le cordon d’alimentation à
la source de courant lors de l’installation du système,
s’assurer que le fil de terre est correctement branché.
• Placer tout d’abord le fil de terre du cordon d’alimentation
sur le plot de mise à la terre puis placer les autres fils de
terre par-dessus. Bien serrer l’écrou de retenue.
• S’assurer que toutes les connexions sont bien serrées
pour éviter la surchauffe.
SÉCURITÉ
Hypertherm Systèmes plasma 1a-5
2/12/01
• Ne jamais lubrifier les robinets des bouteilles ou les
régulateurs avec de l’huile ou de la graisse.
• Utiliser uniquement les bouteilles, régulateurs, tuyaux et
accessoires appropriés et conçus pour chaque application
spécifique.
• Entretenir l’équipement et les pièces d’équipement à gaz
comprimé afin de les garder en bon état.
• Étiqueter et coder avec des couleurs tous les tuyaux de
gaz afin d’identifier le type de gaz contenu dans chaque
tuyau. Se référer aux codes locaux ou nationaux en
vigueur.
LES BOUTEILLES DE GAZ
COMPRIMÉ PEUVENT EXPLOSER
EN CAS DE DOMMAGES
SÉCURITÉ DES BOUTEILLES DE GAZ COMPRIMÉ
Les bouteilles de gaz contiennent du gaz à haute pression.
Si une bouteille est endommagée, elle peut exploser.
• Manipuler et utiliser les bouteilles de gaz comprimé
conformément aux codes locaux ou nationaux.
• Ne jamais utiliser une bouteille qui n’est pas placée à la
verticale et bien assujettie.
• Le capuchon de protection doit être placé sur le robinet
sauf si la bouteille est en cours d’utilisation ou connectée
pour utilisation.
• Éviter à tout prix le contact électrique entre l’arc plasma et
une bouteille.
• Ne jamais exposer des bouteilles à une chaleur
excessive, aux étincelles, aux scories ou aux flammes
nues.
• Ne jamais utiliser des marteaux, des clés ou d’autres
outils pour débloquer le robinet des bouteilles.
Une exposition prolongée au bruit du coupage ou du
gougeage peut provoquer des problèmes auditifs.
• Utiliser un casque de protection homologué lors de
l’utilisation du système plasma.
• Prévenir les personnes aux alentours des risques
encourus en cas d’exposition au bruit.
LE BRUIT PEUT PROVOQUER DES
PROBLÈMES AUDITIFS
Les champs magnétiques produits par les courants à haute
tension peuvent affecter le fonctionnement des prothèses
auditives et des pacemakers. Les personnes portant ce
type d’appareil doivent consulter un médecin avant de
s’approcher d’un lieu où s’effectue le coupage ou le
gougeage plasma.
Pour réduire les risques associés aux champs magnétiques :
• Garder loin de soi et du même côté du corps le câble de
retour et le faisceau de la torche.
• Faire passer le faisceau de la torche le plus près possible
du câble de retour.
• Ne pas s’enrouler le faisceau de la torche ou le câble de
retour autour du corps.
• Se tenir le plus loin possible de la source de courant.
PACEMAKERS ET PROTHÈSES AUDITIVES
Les tuyaux gelés peuvent être endommagés ou éclater
si l'on essaie de les dégeler avec une torche plasma.
UN ARC PLASMA
PEUT ENDOMMAGER
LES TUYAUX GELÉS
SÉCURITÉ
1a-6 Hypertherm Systèmes plasma
2/12/01
Étiquette de sécurité
Cette étiquette est affichée sur la source de courant. Il est important
que l’utilisateur et le technicien de maintenance comprennent la
signification des symboles de sécurité. Les numéros de la liste
correspondent aux numéros des images.
1. Les étincelles produites par le coupage
peuvent provoquer une explosion ou un
incendie.
1.1 Pendant le coupage, éloigner toute matière
inflammable.
1.2 Conserver un extincteur à proximité et
s’assurer qu’une personne soit prête à
l’utiliser.
1.3 Ne jamais couper de récipients fermés.
2. L’arc plasma peut provoquer des blessures
et des brûlures.
2.1 Couper l’alimentation avant de démonter la
torche.
2.2 Ne pas tenir la surface à couper près de la
trajectoire de coupe.
2.3 Porter des vêtements de protection
couvrant tout le corps.
3. Un choc électrique causé par la torche ou
les câbles peut être fatal. Se protéger
contre les risques de chocs électriques.
3.1 Porter des gants isolants. Ne pas porter de
gants mouillés ou abîmés.
3.2 S’isoler de la surface de travail et du sol.
3.3 Débrancher la prise ou la source de
courant avant de manipuler l’équipement.
4. L’inhalation des vapeurs produites par le
coupage peut être dangereuse pour la
santé.
4.1 Garder le visage à l’écart des vapeurs.
4.2 Utiliser un système de ventilation par
aspiration ou d’échappement localisé pour
dissiper les vapeurs.
4.3 Utiliser un ventilateur pour dissiper les
vapeurs.
5. Les rayons de l’arc peuvent brûler les yeux
et provoquer des lésions de la peau.
5.1 Porter un casque et des lunettes de
sécurité. Se protéger les oreilles et porter
une chemise dont le col peut être
déboutonné. Porter un casque de soudure
dont la protection filtrante est suffisante.
Porter des vêtements protecteurs couvrant
la totalité du corps.
6. Se former à la technique du coupage et lire
les instructions avant de manipuler
l’équipement ou de procéder au coupage.
7. Ne pas retirer ou peindre (recouvrir) les
étiquettes de sécurité.
110391 Rev A
HYPERTHERM Sistemas plasma 1b-1
2/12/01
Seccíon 1b
SEGURIDAD
En esta sección:
Reconocimiento de información de seguridad........................................................................................................1b-2
Siga las instrucciones de seguridad .......................................................................................................................1b-2
Peligro…Advertencia…Precaución ........................................................................................................................1b-2
Los cortes pueden provocar incendios o explosiones ............................................................................................1b-2
Prevención ante el fuego, Prevención ante explosiones ...............................................................................1b-2
Peligro de explosión argón-hidrógeno y metano............................................................................................1b-2
Detonación de hidrógeno con el corte de aluminio........................................................................................1b-2
El choque eléctrico puede provocar la muerte .......................................................................................................1b-3
Prevención ante el electrochoque..................................................................................................................1b-3
Los cortes pueden producir humos tóxicos ............................................................................................................1b-3
El arco de plasma puede causar lesiones y quemaduras ......................................................................................1b-4
Antorchas de encendido instantáneo.............................................................................................................1b-4
Los rayos del arco pueden producir quemaduras en los ojos y en la piel ..............................................................1b-4
Protección para los ojos, Protección para la piel, Área de corte....................................................................1b-4
Seguridad de toma a tierra .....................................................................................................................................1b-4
Cable de trabajo, Mesa de trabajo, Potencia primaria de entrada.................................................................1b-4
Seguridad de los equipos de gas comprimido........................................................................................................1b-5
Los cilindros de gas pueden explotar si están dañados .........................................................................................1b-5
El ruido puede deteriorar la audición ......................................................................................................................1b-5
Operación de marcapasos y de audífonos .............................................................................................................1b-5
Un arco plasma puede dañar tubos congelados ....................................................................................................1b-5
Etiqueta de advertencia ..........................................................................................................................................1b-6
SEGURIDAD
2/12/01
1b-2 HYPERTHERM Sistemas plasma
RECONOCIMIENTO DE INFORMACIÓN DE SEGURIDAD
Los símbolos que se muestran en esta sección se utilizan
para identificar los posibles peligros. Cuando vea un
símbolo de seguridad en este manual o en su máquina,
recuerde que existe la posibilidad de que se produzcan
lesiones personales y siga las instrucciones
correspondientes para evitar el peligro.
SIGA LAS INSTRUCCIONES DE SEGURIDAD
Lea atentamente todos los mensajes de seguridad de este
manual y las etiquetas de seguridad en su máquina.
• Mantenga las etiquetas de seguridad de su máquina en
buen estado. Reemplace las etiquetas que se pierdan o
se dañen inmediatamente.
• Aprenda a utilizar la máquina y a utilizar los controles de
la manera correcta. No permita que sea utilizada por
alguien que no conozca su funcionamiento.
• Mantenga su máquina en buenas condiciones de
funcionamiento. La realización de modificaciones no
autorizadas a la máquina puede comprometer la
seguridad y la vida útil de la máquina.
PELIGRO ADVERTENCIA PRECAUCIÓN
Las palabras PELIGRO y ADVERTENCIA se utilizan
conjuntamente con un símbolo de seguridad. La palabra
PELIGRO se utiliza para identificar los mayores peligros.
• Encontrará etiquetas de seguridad con las inscripciones
PELIGRO y ADVERTENCIA en su máquina, junto a
peligros específicos.
• En este manual, la palabra ADVERTENCIA va seguida de
instrucciones que, si no se siguen correctamente, pueden
provocar lesiones e inclusive la muerte.
• En este manual, la palabra PRECAUCIÓN va seguida de
instrucciones que, si no se siguen correctamente, pueden
provocar daños en el equipo.
Prevención ante el fuego
• Asegúrese de que el área sea segura antes de proceder
a cortar. Tenga a mano un extinguidor de incendios.
• Retire todos los materiales inflamables, colocándolos a
por lo menos 10 metros del área de corte.
• Remoje los metales calientes o permita que se enfríen
antes de que entren en contacto con materiales
combustibles.
• Nunca corte depósitos que contengan materiales
inflamables – primero es necesario vaciarlos y limpiarlos
debidamente.
• Antes de realizar cortes en atmósferas potencialmente
inflamables, asegúrese de ventilar bien.
• Al realizar cortes utilizando oxígeno como gas plasma, se
requiere tener un sistema de ventilación de escape.
Prevención ante explosiones
• No corte en atmósferas que contengan polvo o vapores
explosivos.
• No corte depósitos o tubos a presión ni cualquier depósito
cerrado.
• No corte depósitos que hayan contenido materiales
combustibles.
LOS CORTES PUEDEN PROVOCAR INCENDIOS O EXPLOSIONES
ADVERTENCIA
Peligro de explosión
Argón-Hidrógeno y metano
El hidrógeno y el metano son gases inflamables que
suponen un peligro de explosión. Mantenga el fuego lejos
de los cilindros y las mangueras que contengan mezclas de
hidrógeno o metano. Mantenga la llama y las chispas lejos
de la antorcha al utilizar metano o argón-hidrógeno como
plasma.
ADVERTENCIA
Detonación de hidrógeno con
el corte de aluminio
• Al cortar aluminio bajo agua o con agua en contacto con
el lado inferior del aluminio, puede acumularse gas
hidrógeno bajo la pieza a cortar y detonar durante la
operación de corte por plasma.
• Instale un múltiple de aireación en el fondo de la mesa de
agua para eliminar la posibilidad de la detonación del
hidrógeno. Consulte la sección del apéndice de este
manual para conocer detalles acerca del múltiple de
aireación.
SEGURIDAD
4/11/03
HYPERTHERM Sistemas plasma 1b-3
El contacto directo con piezas eléctricas conectadas puede
provocar un electrochoque fatal o quemaduras graves.
• Al hacer funcionar el sistema de plasma, se completa un
circuito eléctrico entre la antorcha y la pieza a cortar. La
pieza a cortar es una parte del circuito eléctrico, como
también cualquier cosa que se encuentre en contacto con
ella.
• Nunca toque el cuerpo de la antorcha, la pieza a cortar o
el agua en una mesa de agua cuando el sistema de
plasma se encuentre en funcionamiento.
Prevención ante el electrochoque
Todos los sistemas por plasma de Hypertherm usan alto
voltaje en el proceso de corte (son comunes los voltajes CD
de 200 a 400). Tome las siguientes precauciones cuando se
utiliza el equipo de plasma:
• Use guantes y botas aislantes y mantenga el cuerpo y la
ropa secos.
• No se siente, se pare o se ponga sobre cualquier superficie húmeda cuando esté trabajando con el equipo.
• Aíslese eléctricamente de la pieza a cortar y de la tierra
utilizando alfombrillas o cubiertas de aislamiento secas lo
suficientemente grandes como para impedir todo contacto
físico con la pieza a cortar o con la tierra. Si su única
opción es trabajar en una área húmeda o cerca de ella,
sea muy cauteloso.
• Instale un interruptor de corriente adecuado en cuanto a
fusibles, en una pared cercana a la fuente de energía.
Este interruptor permitirá al operador desconectar
rápidamente la fuente de energía en caso de emergencia.
• Al utilizar una mesa de agua, asegúrese de que ésta se
encuentre correctamente conectada a la toma a tierra.
EL CHOQUE ELÉCTRICO PUEDE PROVOCAR LA MUERTE
• Instale este equipo y conéctelo a tierra según el manual
de instrucciones y de conformidad con los códigos locales
y nacionales.
• Inspeccione el cordón de alimentación primaria con
frecuencia para asegurarse de que no esté dañado ni
agrietado. Si el cordón de alimentación primaria está
dañado, reemplácelo inmediatamente. Un cable pelado
puede provocar la muerte.
• Inspeccione las mangueras de la antorcha y
reemplácelas cuando se encuentren dañadas.
• No toque la pieza ni los recortes cuando se está
cortando. Deje la pieza en su lugar o sobre la mesa de
trabajo con el cable de trabajo conectado en todo
momento.
• Antes de inspeccionar, limpiar o cambiar las piezas de la
antorcha, desconecte la potencia primaria o desenchufe
la fuente de energía.
• Nunca evite o descuide los bloqueos de seguridad.
• Antes de retirar la cubierta de una fuente de energía o del
gabinete de un sistema, desconecte la potencia primaria
de entrada. Espere 5 minutos después de desconectar la
potencia primaria para permitir la descarga de los
condensadores.
• Nunca opere el sistema de plasma sin que las tapas de la
fuente de energía estén en su lugar. Las conexiones
expuestas de la fuente de energía presentan un serio
riesgo eléctrico.
• Al hacer conexiones de entrada, conecte el conductor de
conexión a tierra en primer lugar.
• Cada sistema de plasma Hypertherm está diseñado para
ser utilizado sólo con antorchas Hypertherm específicas.
No utilice antorchas diferentes, que podrían recalentarse
y ser peligrosas.
Los cortes pueden producir gases y humos tóxicos que
agotan el oxígeno y causan lesiones o inclusive la muerte.
• Mantenga el área de corte bien ventilada o utilice un
respirador con suministro de aire aprobado.
• No realice sus cortes en sitios que se hallen cerca de
operaciones de desengrasado, limpieza o aplicación de
aerosoles. Los vapores de ciertos solventes clorados se
descomponen y forman gas fosgeno al quedar expuestos
a la radiación ultravioleta.
• No corte metales que contengan materiales tóxicos o que
estén recubiertos con ellos, tales como el cinc
(galvanizado), el plomo, el cadmio o el berilio, a menos
LOS CORTES PUEDEN PRODUCIR HUMOS TÓXICOS
que el área se halle bien ventilada y el operador lleve
puesto un respirador con suministro de aire. Los
recubrimientos y todo metal que contenga estos
elementos pueden producir gases o humos tóxicos al ser
cortados.
• Nunca corte depósitos con materiales potencialmente
tóxicos en su interior – primero es necesario vaciarlos y
limpiarlos debidamente.
• Este producto, cuando se lo usa para soldar o cortar,
produce humo y gases que se conocen en el estado de
California como causantes de defectos de nacimiento, y
en algunos casos, cáncer.
SEGURIDAD
4/11/03
1b-4 HYPERTHERM Sistemas plasma
Antorchas de encendido instantáneo
El arco de plasma se enciende inmediatamente después de
activarse el interruptor de la antorcha.
EL ARCO DE PLASMA PUEDE CAUSAR LESIONES Y QUEMADURAS
El arco de plasma puede cortar a través de guantes y de la
piel con rapidez.
• Manténgase alejado de la punta de la antorcha.
• No sostenga el metal junto al trayecto de corte.
• Nunca apunte la antorcha hacia Ud. mismo o hacia otras
personas.
Protección para los ojos Los rayos del arco de plasma
producen rayos intensos visibles e invisibles (ultravioleta e
infrarrojo) que pueden quemar los ojos y la piel.
• Utilice protección para los ojos de conformidad con los
códigos locales o nacionales aplicables.
• Colóquese protectores para los ojos (gafas o anteojos
protectores con protectores laterales, y bien un casco de
soldar) con lentes con sombreado adecuado para
proteger sus ojos de los rayos ultravioleta e infrarrojos del
arco.
Número del cristal
Corriente del arco AWS (EE.UU.) ISO 4850
Hasta 100A No. 8 No. 11
100-200 A No. 10 No. 11-12
200-400 A No. 12 No. 13
Más de 400 A No. 14 No. 14
LOS RAYOS DEL ARCO PUEDEN PRODUCIR QUEMADURAS
EN LOS OJOS Y EN LA PIEL
Protección para la piel Vista ropa de protección para
proteger la piel contra quemaduras causadas por la
radiación ultravioleta de alta intensidad, por las chispas y
por el metal caliente:
• Guantes largos, zapatos de seguridad y gorro.
• Roipa de combustión retardada y que cubra todas las
partes expuestas.
• Pantalones sin dobladillos para impedir que recojan
chispas y escorias.
• Retire todo material combustible de los bolsillos, como
encendedores a butano e inclusive cerillas, antes de
comenzar a cortar.
Área de corte Prepare el área de corte para reducir la
reflexión y la transmisión de la luz ultravioleta:
• Pinte las paredes y demás superficies con colores
oscuros para reducir la reflexión.
• Utilice pantallas o barreras protectoras para proteger a
los demás de los destellos.
• Advierta a los demás que no debe mirarse el arco. Utilice
carteles o letreros.
Cable de trabajo La pinza del cable de trabajo debe
estar bien sujetada a la pieza y hacer un buen contacto de
metal a metal con ella o bien con la mesa de trabajo. No
conecte el cable con la parte que va a quedar separada por
el corte.
Mesa de trabajo Conecte la mesa de trabajo a una
buena toma de tierra, de conformidad con los códigos
eléctricos nacionales o locales apropiados.
SEGURIDAD DE TOMA A TIERRA
Potencia primaria de entrada
• Asegúrese de que el alambre de toma a tierra del cordón
de alimentación está conectado al terminal de tierra en la
caja del interruptor de corriente.
•
Si la instalación del sistema de plasma supone la conexión
del cordón de alimentación primaria a la fuente de energía,
asegúrese de conectar correctamente el alambre de toma
a tierra del cordón de alimentación primaria.
• Coloque en primer lugar el alambre de toma a tierra del
cordón de alimentación primaria en el espárrago luego
coloque cualquier otro alambre de tierra sobre el
conductor de tierra del cable. Ajuste firmemente la tuerca
de retención.
• Asegúrese de que todas las conexiones eléctricas están
firmemente realizadas para evitar sobrecalentamientos.
SEGURIDAD
2/12/01
HYPERTHERM Sistemas plasma 1b-5
• Nunca lubrique reguladores o válvulas de cilindros con
aceite o grasa.
• Utilice solamente cilindros, reguladores, mangueras y
conectores de gas correctos que hayan sido diseñados
para la aplicación específica.
• Mantenga todo el equipo de gas comprimido y las piezas
relacionadas en buen estado.
• Coloque etiquetas y códigos de color en todas las
mangueras de gas para identificar el tipo de gas que
conduce cada una. Consulte los códigos locales o
nacionales aplicables.
LOS CILINDROS DE GAS PUEDEN
EXPLOTAR SI ESTÁN DAÑADOS
SEGURIDAD DE LOS EQUIPOS DE GAS COMPRIMIDO
Los cilindros de gas contienen gas bajo alta presión. Un
cilindro dañado puede explotar.
• Manipule y utilice los cilindros de gas comprimido de
acuerdo con los códigos locales o nacionales aplicables.
• No use nunca un cilindro que no esté de pie y bien sujeto.
• Mantenga la tapa de protección en su lugar encima de la
válvula, excepto cuando el cilindro se encuentre en uso o
conectado para ser utilizado.
• No permita nunca el contacto eléctrico entre el arco de
plasma y un cilindro.
• No exponga nunca los cilindros a calor excesivo, chispas,
escorias o llamas.
• No emplee nunca martillos, llaves u otro tipo de
herramientas para abrir de golpe la válvula del cilindro.
La exposición prolongada al ruido propio de las
operaciones de corte y ranurado puede dañar la audición.
• Utilice un método de protección de los oídos aprobado al
utilizar el sistema de plasma.
• Advierta a las demás personas que se encuentren en las
cercanías acerca del peligro que supone el ruido
excesivo.
EL RUIDO PUEDE DETERIORAR LA AUDICIÓN
Los campos magnéticos producidos por las elevadas
corrientes pueden afectar la operación de marcapasos y de
audífonos. Las personas que lleven marcapasos y
audífonos deberán consultar a un médico antes de
acercarse a sitios donde se realizan operaciones de corte y
ranurado por plasma.
Para reducir los peligros de los campos magnéticos:
• Mantenga el cable de trabajo y la manguera de la
antorcha a un lado, lejos del cuerpo.
• Dirija la manguera antorcha lo más cerca posible del
cable de trabajo.
• No envuelva el cable de trabajo ni la manguera de la
antorcha en su cuerpo.
• Manténgase tan lejos de la fuente de energía como sea
posible.
OPERACIÓN DE MARCAPASOS Y DE AUDÍFONOS
Se puede hacer daño a los tubos congelados, o se
los puede reventar, si uno trata de descongelarlos
con una antorcha por plasma.
UN ARCO PLASMA PUEDE DAÑAR TUBOS CONGELADOS
SEGURIDAD
2/12/01
1b-6 HYPERTHERM Sistemas plasma
Etiqueta de advertencia
Esta etiqueta de advertencia se encuentra adherida a la fuente de energía.
Es importante que el operador y el técnico de mantenimiento comprendan
el sentido de estos símbolos de advertencia según se describen. El texto
numerado corresponde a los cuadros numerados de la etiqueta.
1. Las chispas producidas por el corte
pueden causar explosiones o incendios.
1.1 Mantenga los materiales inflamables lejos
del lugar de corte.
1.2 Tenga a mano un extinguidor de incendios
y asegúrese de que alguien esté preparado
para utilizarlo.
1.3 No corte depósitos cerrados.
2. El arco de plasma puede causar
quemaduras y lesiones.
2.1 Apague la fuente de energía antes de
desarmar la antorcha.
2.2 No sostenga el material junto al trayecto de
corte.
2.3 Proteja su cuerpo completamente.
3. Los electrochoques provocados por la
antorcha o el cableado pueden ser fatales.
Protéjase del electrochoque.
3.1 Colóquese guantes aislantes. No utilice
guantes dañados o mojados.
3.2 Aíslese de la pieza de trabajo y de la tierra.
3.3 Antes de trabajar en una máquina,
desconecte el enchufe de entrada o la
potencia primaria.
4. La inhalación de los humos provenientes
del área de corte puede ser nociva para la
salud.
4.1 Mantenga la cabeza fuera de los gases
tóxicos.
4.2 Utilice ventilación forzada o un sistema
local de escape para eliminar los humos.
4.3 Utilice un ventilador para eliminar los
humos.
5. Los rayos del arco pueden producir
quemaduras en los ojos y en la piel.
5.1 Utilice un sombrero y gafas de seguridad.
Utilice protección para los oídos y
abróchese el botón del cuello de la camisa.
Utilice un casco de soldar con el filtro de
sombreado adecuado. Proteja su cuerpo
completamente.
6. Antes de trabajar en la máquina o de
proceder a cortar, capacítese y lea las
instrucciones completamente.
7. No retire las etiquetas de advertencia ni las
cubra con pintura.
110391 Rev A
Section 2
SPECIFICATIONS
In this section:
Power supply ............................................................................................................................................................2-2
Dimensions and weight ....................................................................................................................................2-3
T80 torches...............................................................................................................................................................2-4
Dimensions ......................................................................................................................................................2-5
Symbols and markings .............................................................................................................................................2-6
S Mark............................................................................................................................................................2-6
IEC symbols .....................................................................................................................................................2-6
powermax1250 Service Manual 2-1
4
SPECIFICATIONS
Power supply
ated open circuit voltage (U
R
)
0
300 VDC
Output characteristic* Drooping
*Defined as a plot of output voltage
versus output current
ated output current (I
R
)
2
25A – 80A
Hypertherm standard rated output 150 VDC
voltage (U2)
Duty cycle (X*) at 104°F (40°C) at U1– Volts AC rms X
rated conditions (U1, I1, U2, I2) 200-208 VAC 1PH 40%
230-240 VAC 1PH 50%
*X = T
on/Tbase
T
= time, minutes 200-208 VAC 3PH 50%
o
n
T
base
, 480 VAC 1PH 60%
= 10 minutes 230-240 VAC 3PH 60%
380/400/415 VAC 3PH 60%
480 VAC 3PH 60%
600 VAC 3PH 60%
Operating temperature 14° to 104° F (-10° to 40° C)
Rated
AC phases (PH) and line frequency (Hz) PH Hz
Standard model 1-3 50-60
CE model 3 50-60
Rated input voltage (U1), rated input U1– Volts AC rms I1-Amps rms I1eff
current (I1) and I1eff* at rated output 200-208 VAC 1PH 70 44
U2and I2– cutting only. 230-240 VAC 1PH 60 42
480 VAC 1PH 30 23
200-208 VAC 3PH 40 28
*I1eff = (I1) X used to determine 230-240 VAC 3PH 36 28
rating of power cord. 380/400/415 VAC 3PH 21 16
480 VAC 3PH 17 13
600 VAC 3PH 16.5 13
Power factor U1– Volts AC rms Harmonic power factor Displacement
power factor
200-208 VAC 1PH 0.99 0.99
230-240 VAC 1PH 0.99 0.99
480 VAC 1PH 0.91 0.99
200-208 VAC 3PH 0.94 0.99
230-240 VAC 3PH 0.94 0.99
380/400/415 VAC 3PH 0.94 0.99
480 VAC 3PH 0.94 0.99
600 VAC 3PH 0.80 0.99
R
– short circuit ratio—CE model only U1– Volts AC rms, 3PH R
sce
sce
400 VAC 228
230 VAC 163
This equipment conforms to IEC 61000-3-12, provided that
code—degree of protection provided by
IP
R
IP23CS*
= 228 at 400VAC 3PH and 163 at 230 VAC 3PH.
sce min
enclosure IP – “International Protection”
2 – No ingress foreign objects >=12.5 mm (0.5 in)
3 – No harmful ingress spraying water
C – AC line circuits protected against ingress of tool >=2.5 mm
dia. x 100 mm long (0.1 inch x 4.0 inch)
S – fan stationary during water test
*
WARNING: DO NOT OPERATE IN THE RAIN
oppling, tilting (with or without wheel kit) Up to a 15° incline
T
Gas type Air Nitrogen
Gas quality Clean, moisture-free, oil-free
Gas inlet pressure and flow 90 psig (6.1 bar) 400 scfh/6.7 scfm (189 l/min)
2-2 powermax1250 Service Manual
4
6
.
0
B
A
R
5
.
0
4
.
0
P
S
I
8
0
7
0
5
0
6
0
6
0
4
0
A
MP
S
8
0
2
5
A
C
+
_
Dimensions and weight
90 lb
(41 kg)
Weight of power supply
without torch
SPECIFICATIONS
10.5 in
(267 mm)
23 in
(584 mm)
19.5 in
(495 mm)
powermax1250 Service Manual 2-3
4
SPECIFICATIONS
T80 torches
Handheld cutting capacity at 80 amps
Recommended capacity 7/8 inch (22 mm)
Maximum capacity 1-1/8 inch (29 mm)
Severance capacity 1-1/2 inch (38 mm)
Mechanized cutting capacity at 80 amps
Recommended capacity 3/8 inch (10 mm)
Maximum capacity 5/8 inch (16 mm)
Gouging capability
(metal removal rate on mild steel)
Weight
7.2 pounds (3.3 kg) with 25 ft (7.5 m) lead
T80 13.9 pounds (6.3 kg) with 50 ft (15 m) lead
20.6 pounds (9.4 kg) with 75 ft (22.5 m) lead
12.2 pounds (5.5 kg) hour
4.5 pounds (2.0 kg) with 15 ft (4.5 m) lead
8.3 pounds (3.8 kg) with 25 ft (7.5 m) lead
T80M 9.9 pounds (4.5 kg) with 35 ft (10.7 m) lead
15.0 pounds (6.8 kg) with 50 ft (15 m) lead
21.7 pounds (9.9 kg) with 75 ft (22.5 m) lead
2-4 powermax1250 Service Manual
4
Dimensions
T80 hand torch dimensions
3.9"
(99 mm)
2.25"
(57 mm)
SPECIFICATIONS
8.9" (226 mm)
1.5"
(38 mm)
1.00"
(25 mm)
T80M machine torch dimensions
1.00"
(25 mm)
2.03"
(52mm)
15.25"
(387 mm)
8"
(203 mm)
32 pitch 0.125" (3.2 mm) width
0.125" (3.2 mm) height
1.38"
(35 mm)
powermax1250 Service Manual 2-5
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SPECIFICATIONS
Symbols and markings
S Mark
The S mark indicates that the power supply and torch are suitable for use in environments with increased hazard
f electrical shock. The hand torches must h
o
IEC symbols
The following symbols may appear on the power supply data plate, control labels and switches.
ave shielded consumable parts to maintain S mark compliance.
Direct current (DC)
Alternating current (AC)
Plasma torch cutting and gouging
AC input power connection
The terminal for the external
protective (earth) conductor
l
O
An inverter-based power
source
Plasma torch in the
position (cooling and cutting
gas exiting nozzle)
Power is ON
Power is OFF
Volt/amp curve, “drooping”
characteristic
TEST
2-6 powermax1250 Service Manual
4
Section 3
MAINTENANCE
In this section
Controls and indicators .............................................................................................................................................3-3
Indicator LEDs..................................................................................................................................................3-3
Theory of operation...................................................................................................................................................3-4
General ............................................................................................................................................................3-4
Functional description ......................................................................................................................................3-4
Sequence of operation.....................................................................................................................................3-5
Troubleshooting preparation.....................................................................................................................................3-6
Test equipment.................................................................................................................................................3-6
Troubleshooting procedures and sequence.....................................................................................................3-6
External inspection...........................................................................................................................................3-6
Internal inspection ............................................................................................................................................3-7
Initial resistance check..............................................................................................................................................3-7
Check the power switch ...................................................................................................................................3-8
Hypertherm IGBT tester ...................................................................................................................................3-9
Indicator LEDS and device tests......................................................................................................................3-9
IGBT test preparation.....................................................................................................................................3-10
IGBT device test using the Hypertherm tester ...............................................................................................3-10
roubleshoot the Hypertherm IGBT
T
Schematic for building an IGBT tester............................................................................................................3-11
IGBT device test using a non-Hypertherm tester ...........................................................................................3-12
roubleshooting guide ............................................................................................................................................3-14
T
Control board LEDs........................................................................................................................................3-20
Test 1 – voltage input .....................................................................................................................................3-22
est 2 – voltage balance ................................................................................................................................3-23
T
Test 3 – output diodes ....................................................................................................................................3-24
Test 4 – pilot arc IGBT (Q8) ...........................................................................................................................3-25
est 5 – inverter IGBT (Q6) and PFC IGBT (Q7) ...........................................................................................3-26
T
Test 6 – flyback circuit ....................................................................................................................................3-27
Test 7 – torch stuck open (TSO) ....................................................................................................................3-28
est 8 – plasma start ......................................................................................................................................3-29
T
Test 9 – torch cap sensor ...............................................................................................................................3-29
Test 10 – gas solenoid ...................................................................................................................................3-30
est 11 – incoming line voltage (VACR) .........................................................................................................3-30
T
Test 12 – pressure switch...............................................................................................................................3-30
Test 13 – fan...................................................................................................................................................3-30
tester .....................................................................................................3-11
powermax1250 Service Manual 3-1
MAINTENANCE
Test 14 – AUX switch .....................................................................................................................................3-31
Test 15 – flyback circuit failure .......................................................................................................................3-31
T60 hand torch: connector pinout diagrams and assembly ....................................................................................3-32
60M machine torch: connector pinout diagrams and assembly ...........................................................................3-33
T
Component replacement ........................................................................................................................................3-34
Power cord replacement ................................................................................................................................3-34
Torch replacement..........................................................................................................................................3-35
Filter element replacement.............................................................................................................................3-37
Work cable replacement ................................................................................................................................3-38
Capacitor replacement ...................................................................................................................................3-39
Power board removal and replacement .........................................................................................................3-40
Heat sink component replacement.................................................................................................................3-43
3-2 powermax1250 Service Manual
4
Controls and indicators
6.0
BAR
5.04.0
PSI
80705060
60
40
AMPS
80
25
V
AC
+
_
AC
V
Current
(amps)
adjustment
knob
ndicator
I
EDs
L
MAINTENANCE
ON (I) / OFF (O)
switch (S1)
Mode switch
Pressure
gauge
Pressure
regulator
Indicator LEDs
Green power ON LED
When illuminated, indicates that power is applied to the system and the power switch is ON ( I ).
Gas pressure LED
Yellow:
Green: When illuminated, indicates that there is acceptable gas pressure for torch operation.
Note: This LED should illuminate when the power is ON ( I ).
Yellow torch cap LED
When illuminated, indicates that the retaining cap is loose or not installed.
urn
T
Note:
LED.
Yellow temperature LED
When illuminated, indicates that the power supply’s temperature is too hot.
Red fault LED
When illuminated, indicates that a fault condition exists, which prevents system operation.
Yellow low line voltage LED
When illuminated, indicates that line voltage is below 170 V
also indicate a missing phase.
When flashing, indicates that the gas pressure is below 60 psig (4.1 bar) for cutting, or 40 psig
(2.8 bar) for gouging.
, correct this fault condition, then turn ON (I) the power to extinguish the
power
OFF (O)
the
AC or above 680 V
AC. On CE units, it can
powermax1250 Service Manual 3-3
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MAINTENANCE
Theory of operation
General
Refer to the
Functional description
and
Sequence of operation
sections below, and to Section 6,
Wiring diagrams
.
Functional description
AC power enters the system through the power switch (S1) to the input diode bridge (D24). The voltage from the
diode bridge supplies the power factor correction (PFC) boost converter, which provides a 750 VDC bus voltage.
The bus voltage then supplies voltage and current to the inverter and the flyback circuit power supply (DC to DC
converter) on the power board (PCB2). The power board provides noise suppression and spike protection. A “soft
start” is implemented via the power board resistor and relay (K1).
The PFC boost converter consists of an isolated gate bipolar transistor (IGBT Q7), choke and control circuit. It
provides a 750 VDC bus voltage when the input AC voltage is between 170 and 540 VAC. When the input voltage is
above 540 VAC the bus voltage will rise to (Vin)( 2 ).
The inverter consists of an IGBT (Q6), the power transformer (T2),
power board. The inverter operates as a pulse-width, modulator-controlled bridge circuit that is rectified by the
output diode.
The output circuitry consists of 2 current-transfer sensors located on the power board, the pilot arc IGBT (Q8) and
the output choke.
The control board’s microprocessor monitors and regulates the system’s operation and safety circuits. The current
adjustment knob is used to set to the current to the desired value. The system compares the set-point to the output
current by monitoring the current sensor and adjusting the pulse-width output of the inverter IGBT (Q6).
a current sense transformer and sections of the
The control board (PCB3) includes a control switch for the pilot arc, which allows the operator to turn ON the pilot
arc (useful when cutting expanded metal), turn OFF the pilot arc (for maximum life of consumables), or to increase
the pilot arc to 20A (useful for gouging or non-transferred-arc cutting).
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4
Sequence of operation
MAINTENANCE
Power OFF
• Connect the gas supply to the filter on the power unit.
• Connect the torch to the power supply.
• Connect the work lead to the workpiece.
• Apply power at the line voltage disconnect box.
• Set the ON/OFF switch (S1) to ON (I)
• The power ON LED and the gas pressure LED illuminate
green, indicating system is ready for operation.
• Fault LEDs should be extinguished (see
guide
for more information)
• Turn the current adjustment knob fully counterclockwise,
to the gas test position.
• Check the gas pressure setting.
.
Troubleshooting
Set the power switch (S1) to OFF (O).
• The gas solenoid valve (V1) closes.
• The gas flow stops.
• The consumables reseat.
• The arc extinguishes.
• Postflow continues for 10 seconds.
• The arc transfers to the workpeice.
• Move the torch to make a cut.
• The workpiece drops after the cut.
• Release the plasma start trigger on the
hand torch or the remote start switch
for the machine torch.
The gas solenoid valve (V1)
opens to purge the system and
to allow the setting of pressure.
• Set the gas pressure (see the
Operator Manual).
section in
• Select the desired cutting amps with
the
The gas solenoid valve
•
closes.
The g
•
the
current adjustment knob.
as flow stops.
(
V1
Setup
)
• Position the torch above the workpiece.
• Pull the plasma start trigger on the hand torch or
press the remote start switch for the machine torch.
• The gas solenoid valve (V1) opens.
The gas flow starts
•
• The torch nozzle and electrode
separate.
• The pilot arc starts.
The power circuits are ready.
.
powermax1250 Service Manual 3-5
4
MAINTENANCE
Troubleshooting preparation
The complexity of the circuits requires that service technicians have a working knowledge of inverter power supply
theory. In addition to being technically qualified, technicians must perform all testing with safety in mind.
If questions or problems arise during servicing, call the nearest Hypertherm Technical Services Department listed in
the front of this manual.
Test equipment
• Multimeter
• IGBT tester (part number 128883)
Troubleshooting procedures and sequence
When performing the troubleshooting procedures,
• Refer to Section 6 for the system wiring diagram;
• Refer to Section 4 to locate power supply components;
• Refer to Section 5 for torch components.
After the problem has been located and repaired, refer to the
test the power supply for proper operation.
Power OFF and
disconnected
External inspection
Internal inspection
Resistance checks
External inspection
Sequence of Operation
Troubleshooting
tests
Troubleshooting
guide
Power ON
flow diagram in this section to
1. Inspect the exterior of the power supply for damage to the cover and external components.
2. Inspect the torch and the torch lead for damage.
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4
MAINTENANCE
DANGER
LECTRIC SHOCK CAN KILL
E
Turn off the power and remove the input power plug from its receptacle before removing
•
the cover from the power supply. If the power supply is directly connected to a line
disconnect box, switch the line disconnect to OFF (O). In the U.S., use a “lock-out / tagout” procedure until the service or maintenance work is complete. In other countries,
follow appropriate national or local safety procedures.
• Do not touch live electrical parts! If power is required for servicing, use extreme caution
when working near live electrical circuits. Dangerous voltages exist inside the power
supply that can cause serious injury or death.
• Do not attempt to repair the power board or control board. Do not cut away or remove
any protective conformal coating from either board. To do so will risk a short circuit
between the AC input circuit and the output circuit and may result serious injury or
death.
HOT PARTS CAN CAUSE SEVERE BURNS
• Allow the power supply to cool before servicing.
MOVING BLADES CAN CAUSE INJURY
• Keep hands away from moving parts.
STATIC ELECTRICITY CAN DAMAGE CIRCUIT BOARDS
• Use proper precautions when handling printed circuit boards.
– Wear a grounded wrist strap when handling PC boards.
Store PC boards in anti-static containers.
–
Internal inspection
1. Set the ON/OFF switch (S1) to O (OFF), unplug the power cord and disconnect the gas supply.
2. Remove the cover of the power supply by removing the 12 securing screws.
3. Inspect the inside of the power supply, especially on the side with the power board. Look for broken or loose
wiring connections, burn and char marks, damaged components and so on. Repair or replace as necessary.
Initial resistance check
All resistance values must be taken with the power cord disconnected and all internal power supply wires attached.
Perform the steps in
Internal inspection
before continuing in this section.
• If the resistance values are not close (±25%) to the values given in this section, isolate the problem by
removing wires attached to the resistance check points or component until the problem is found.
• After the problem has been located and repaired, refer to the
section to test the power supply for proper operation.
Sequence of operation
flow diagram in this
powermax1250 Service Manual 3-7
4
MAINTENANCE
Check the power switch
1. With the power disconnected, set the ON/OFF switch (S1) to ON (I).
. Check the resistance across the input leads.
2
3. Check the resistance from the input leads to ground.
Notes: With the power disconnected and the ON/OFF switch (S1) set to OFF (O), all circuits should read as
open. All electrical values shown are ±25%.
2.4 MΩ
2.4 MΩ2.4 MΩ
>20 MΩ
If no problems were found during the inspection or the initial resistance check, and the power supply still does not
operate correctly, see the
Note: The
Troubleshooting guide
Troubleshooting guide
provides most probable causes and solutions. Study the system
.
wiring diagram and understand the theory of operation before troubleshooting. Before
echnical
purchasing a major replacement component, verify the problem with Hypertherm
T
Service or the nearest Hypertherm repair facility.
3-8 powermax1250 Service Manual
4
MAINTENANCE
1
28884
Hypertherm IGBT tester
Use the Hypertherm IGBT tester (part number 128883) as described in the following sections or assemble your
own IGBT tester from the schematic diagram shown in
IGBT tester schematic
Circuit
diagram
and use it to test the IGBTs.
Pass LED
(green)
Fail LED
(red)
Test for
shorted IGBT
Indicator LEDs and device tests
Green “pass” LED
When illuminated, this LED indicates that the IGBT passed the test for an open IGBT when switch is
pressed to the right or for a short-circuited IGBT when switch is pressed to the left.
Red “fail” LED
When illuminated, this LED indicates that the IGBT failed the test for an open IGBT when switch is
pressed to the right or for a short-circuited IGBT when switch is pressed to the left.
Low battery
LED (red)
Test for
open IGBT
Rocker
switch
Collector
(red)
Gate
(yellow)
Emitter
(black)
Red “low battery” LED
When illuminated, this LED indicates that the remaining voltage in the battery is insufficient to power
the test circuitry. Replace the battery.
Note: The Hypertherm IGBT tester requires a minimum of 8V to power its circuitry properly.
IGBT test preparation
Before testing with the Hypertherm IGBT tester, connect the colored leads to the IGBT as shown on the next page.
Note:
Before an IGBT
can be tested, it must be electrically isolated from all circuits. If the IGBT
is installed in
a power supply, remove the power board and any lead connections before testing.
powermax1250 Service Manual 3-9
4
MAINTENANCE
aution: Failure to isolate the IGBT may result in false readings and/or damage
C
to the IGBT tester.
The illustrations below depict three common configurations of an IGBT. Each connection on the IGBT will be
labeled with an abbreviation. They may be labeled as C, E, G or 1, 2, 3 with a schematic that shows numbers and
pin functions.
IGBT, Inverter
Test 1
Yellow lead
Gate 2 (G2)
Black lead
Emitter 2 (E2)
Red lead
Collector 2, (C2)
Red lead
Collector 1, (C1)
Black lead
Emitter 1 (E1)
IGBT, Inverter
Test 2
Yellow lead
Gate 1 (G1)
Yellow lead
Gate (G)
Black lead
Emitter (E)
Red lead
Collector (C)
IGBT device test using the Hypertherm tester
Using the Hypertherm IGBT
in the following table.
tester, press and hold the switch in the desired position to perform each test described
IGBT, PFC
IGBT, Pilot arc
Yellow lead
Gate (G)
Black lead
Emitter (E)
Red lead
Collector (C)
Switch
LED
position Fail Pass Battery This may mean Corrective action
Left X – – IGBT is short-circuited Replace IGBT
Left – X – IGBT passed the short-circuit test None
Left – – X Battery below 8V Replace battery
Left – – – Dead battery Replace battery
Right X – – IGBT is open Replace IGBT
Right – X – IGBT passed the open test None
Right – – X Battery below 8V Replace battery
Right – – – Dead battery Replace battery
3-10 powermax1250 Service Manual
4
MAINTENANCE
Troubleshoot the Hypertherm IGBT tester
1. Inspect the leads and the IGBT tester for damage.
2. Verify that the battery voltage is greater than 8V.
3. Test the IGBT Tester, itself, as shown below. If the results do not match the table, replace the lead connections.
Connect leads Short test Open test
None Pass Fail
Red to Black Fail Pass
Schematic for building an IGBT tester
R4
2.0K
009036
9 VDC
battery
Normally open
(N.O.) pushbutton
switch
ellow
Y
Minigrabber
R1
test clip 4
3.01M
009464
Black
Minigrabber
test clip
Legend
1. Collector 1 (C1)
R3
2.0K
009036
D1
Red LED lamp
109092
2. Emitter 2 (E2)
3. Collector 2, Emitter 1 (C2,E1)
4. Gate 1 (G1)
5. Emitter 1 (E1)
6. Emitter 2 (E2)
7. Gate 2 (G2)
Red Minigrabber
test clip
1
5
3
7
6
2
Q1
150A
1400V
109125
powermax1250 Service Manual 3-11
MAINTENANCE
IGBT device test using a non-Hypertherm tester
The device tester shown in
Schematic for building an IGBT tester
has one LED and one pushbutton switch that are
used in combination to perform two tests.
Note: Before an IGBT can be tested, it must be electrically isolated from all circuits. If the IGBT is installed in
power supply, remove the power board and any lead connections before testing.
a
1. Inspect the IGBT for cracks or black marks. If damaged, replace the IGBT.
2. Verify that the 9v battery reads greater than (>) 8.0v.
3. Connect the test leads as shown below.
4. With the test leads connected and without pressing the pushbutton switch, the LED should not illuminate. If the
LED is illuminated, then the IGBT is shorted. Replace the IGBT.
5. With the test leads connected, press the pushbutton switch. This time, the LED should illuminate. If the LED
does not illuminate, then the IGBT is open. Replace the IGBT.
Yellow lead
Gate 2 (G2)
Black lead
Emitter 2 (E2)
Red lead
Collector 2 (C2)
IGBT, Inverter
test 1
Yellow lead
Gate (G)
Black lead
Emitter (E)
Red lead
Collector (C)
IGBT, PFC
Yellow lead
Gate (G)
Black lead
Emitter (E)
Red lead
Collector (C)
IGBT, Pilot arc
IGBT, Inverter
test 2
Yellow lead
Red lead
Collector 1 (C1)
Black lead
Emitter 1 (E1)
Gate 1 (G1)
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3
MAINTENANCE
Power switch (S1)
PFC IGBT (Q7) Flyback circuit
Power factor circuit
Input diode
Inverter IGBT (Q6)
Board common (TP1)
Torch (J18) Gas manifold Inverter circuit
Work lead
Output diodes
Control board (PCB3)
IGBT, Pilot Arc (Q8)
powermax1250 Service Manual 3-13
3
MAINTENANCE
Troubleshooting Guide
3-14 powermax1250 Service Manual
4
MAINTENANCE
powermax1250 Service Manual 3-15
4
MAINTENANCE
3-16 powermax1250 Service Manual
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MAINTENANCE
powermax1250 Service Manual 3-17
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MAINTENANCE
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MAINTENANCE
powermax1250 Service Manual 3-19
4
7050456055 65 75 80 85
MAINTENANCE
Control board LEDs
If the fault LED illuminates, no yellow indicator LEDs are illuminated, and green AC and pressure LEDs remain
illuminated, check LEDs on the rear of control board (PCB3).
Diagnostic LEDs
START
START SIGNAL VALID
XFR
TRANSFER
SELF DIAGNOSTICS FAILURE
SDF
(Blinking at 1 sec rate.)
INVERTER INTERLOCK
IF
(Visible for 10 sec. after event)
TORCH STUCK OPEN
TSO
(Visible for 10 sec. after event)
SP
SPARE
GAS
STATUS
CURRENT
P1
UP
MID
DOWN
CPA
NORMAL
GOUGE
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4
MAINTENANCE
powermax1250 Service Manual 3-21
4
MAINTENANCE
Test 1 – voltage input
• Check the line voltage to the top of the power switch (S1).
• Check the input voltage to the input diode bridge.
• The AC voltage between any 2 input wires should equal the line voltage.
• If there is proper voltage to the power switch and low voltage to the input diode, replace the power switch.
– For CE systems, check the voltage at the CE filter. If there is proper voltage to CE filter and low voltage
to the input diode, replace the CE filter.
• Check the output voltage of the input diode bridge.
• Output VDC = Line Voltage x 1.414 VDC
Note: All values can be ±15%.
Standard unit CE unit
L1 Black Black (U)
L2 White Blue (V)
L3 Red Brown (W)
PE Green Green/Yellow
Input diode bridge
L1
Ground (PE)
L2
L3
Power switch (S1)
= Line voltage*
= Line voltage
= Line voltage*
* Single phase
Line voltage x 1.414
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4
MAINTENANCE
Test 2 – voltage balance
Test to check the balance of the bus voltage, the power-factor circuit, and the soft-start circuit.
• Verify the system’s serial number. Serial numbers below 1250-008720 have a different power board from
systems with serial numbers above 1250-008720.
• Remove screws from capacitors C94 and C98 before measuring the resistors listed below.
• Check the voltage across the inverter IGBT (Q6).
• Check the voltage across the capacitors (C94, C98) before and during torch operation.
• Voltage across both capacitors should be 375 VDC.
On systems with serial numbers below 1250-008720, if the capacitors are not balanced at 375 VDC, install the
RCD resistor kit (part number 128963). For systems with higher serial numbers, replace the power board.
Note: All values can be ±15%.
Bus-bleed and soft-start
resistors for serial numbers
below 1250-008720.
R118 = 3Ω
R119 = 25kΩ
R120 = 25kΩ
Inverter IGBT (Q6)
750 VDC
375 VDC
375 VDC
Bus-bleed and soft-start
resistors for serial numbers
above 1250-008720.
R124 = 75kΩ
R125 = 75kΩ
R126 = 75kΩ
R127 = 75kΩ
Note: Bulk capacitors must be
out of circuit.
R126 = 20.8k R120 = 21.2k
R125 = 21.0k R127 = 21.2k
R124 = 24.1k
R119 = 24.1k
C94
375 VDC
C98
375 VDC
powermax1250 Service Manual 3-23
4
MAINTENANCE
Test 3 – output diodes
• Check each diode (connection 1 and 3) with an ohm meter in diode test mode.
• For each diode, the value should be open with meter leads in one direction and 0.1V to 1.0V with the meter
leads reversed.
The diode is shorted if the value is less than 0.1V. Replace the diode.
The diode is open if the value is greater than 1.0V in both directions. Replace the diode.
Note: In each case, common (black) should be on 3.
3 2 1
3
21
3 2 1
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MAINTENANCE
Test 4 – pilot arc IGBT (Q8)
• Check the resistance of the gate-drive circuit (R108, R110).
• If the values are not ±15% of the values listed below, replace the power board (PCB2) and the pilot arc
IGBT (Q8).
• If the values are correct, check the pilot arc IGBT (Q8) with an IGBT tester. If it fails, replace the power
board (PCB2) and the pilot arc IGBT (Q8).
Gate-drive resistors
R108 = 1kΩ
R110 = 10kΩ
Pilot arc IGBT
(Q8)
powermax1250 Service Manual 3-25
4
MAINTENANCE
C100
Test 5 – inverter IGBT (Q6) and PFC IGBT (Q7)
• Check the resistance of the gate-drive circuit.
• If values are not ±25% of the values shown below, replace the power board (PCB2) and the appropriate
IGBT.
• If values are correct, check both IGBTs with an IGBT tester. If one IGBT fails, replace the power board
(PCB2) and the failed IGBT.
o o
R82
Inverter IGBT (Q6)
o o
Inverter
R82 = 994Ω
R83 = 6.1Ω
R65 = 995Ω
PFC
R87 = 994Ω
R56 = 4.1Ω
R98 = 1Ω
R75 = 6.1Ω
R65
R84 = 10.4Ω
R96 = .4Ω
PFC IGBT (Q7)
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MAINTENANCE
Test 6 – flyback circuit
DC power supply circuit test (+5 VDC, +10 VDC, +18 VDC, and +24 VDC).
• Verify that the diodes listed below are not short-circuited by checking their resistance (approximately 2kΩ).
Note: Check the voltage to TP1.
• Inspect the circuit for damage.
D4 = 24 VDC R1 = 24 VDC
D5 = 24 VDC R2 = 18 VDC
D7 = 10 VDC R9 = -6 VDC
D9 = 18 VDC R18 = 5 VDC
D17 = 5 VDC R20 = 0.75Ω
R26 = 18 VDC
R55 = 18 VDC
TP1
powermax1250 Service Manual 3-27
4
MAINTENANCE
Test 7 – torch stuck open (TSO)
• Check the resistance between the pilot arc IGBT (Q8) and J17. The value should be less than (<) 100Ω.
• Switch to gas test mode and check the resistance again. The value should be greater than (>) 1kΩ.
• If the value is less than (<) 100Ω all the time, check the resistance between the pilot arc IGBT (Q8) and J17
with the torch removed. If the value is less than (<) 100kΩ, replace the pilot arc IGBT (Q8).
• If the resistance is always greater than (>) 100Ω, then the electrode/nozzle circuit is open.
– Inspect the wiring to the torch.
– Replace all consumables and verify that the torch will fire.
Note: The retaining cap should be snug, but not over-tightened.
– If the torch plunger does not move freely in the torch head, replace the torch head.
• Verify that the pilot arc IGBT (Q8) is open by placing a jumper wire between J14 and the pilot arc IGBT
(Q8). Then attempt to fire the torch. If the torch fires, replace the pilot arc IGBT (Q8).
Note: All values are ±25%.
Pilot arc IGBT
Q8
J14
J17
3-28 powermax1250 Service Manual
4
MAINTENANCE
C100
Test 8 – plasma start
• After you turn ON the power, place a jumper wire between red and white on the machine interface (J19).
The torch should produce an arc.
Note: This only applies to the machine torch.
• If the torch fires, inspect the machine interface cable and verify the start signal from the CNC by verifying
that the start LED on the control board illuminates (see
• If torch does not fire, verify that the start LED on the control board (PCB3) also is not illuminating.
Control board LEDs
).
• To test hand torch operation, pull the trigger and verify that the start LED illuminates (see
).
LEDs
• If the start LED is OFF, verify continuity between the purple and orange wires on the Easy Torch Removal
(ETR) connector of the torch lead.
• If the start LED is OFF and the trigger works correctly, place a jumper wire between pins 3 and 4 of U22. If
the start LED illuminates, replace the power board (PCB2). If it does not illuminate, replace the control
board (PCB3).
Control board
Test 9 – torch cap sensor
• Remove the ETR connector (J18) from the power supply.
• Check the continuity of pins 11 and 12 with the consumables installed in the torch.
• If the connection is open, check the wiring in the torch leads and the cap-sensor switch.
• With the power OFF, place a jumper wire between pins 3 and 4 of U23.
• Turn ON the power. If the torch cap-sensor LED goes out, replace the power
board (PCB2). If the LED remains illuminated, replace the control board
(PCB3).
ETR connector
(J18)
powermax1250 Service Manual 3-29
4
MAINTENANCE
J4
J1
Q1
R
7
R25
R50
TP1
Q7
J20
J
2
Test 10 – gas solenoid
• If the gas flows continuously, disconnect the gas solenoid connector (J20) from the power board (PCB2). If
the gas does not shut off, replace the valve.
• If the gas stops, disconnect the ribbon cable (J4) from the power board (PCB2) and reconnect J20. If the
gas remains off, replace the control board (PCB3). If the gas flow returns, replace the power board (PCB2).
Test 11 – incoming line voltage (VACR)
• Verify that the voltage on output of the input diode,
equals 1.414 multiplied by the input voltage.
• If the value is low, check the input voltage or replace
the diode.
• If the value is correct, verify that the voltage between
the left side of R25 and ground (TP1) is 4.969 mV/V.
• If the value is correct, replace the control board
(PCB3). If not, replace the power board (PCB2) and
the PFC IGBT (Q7).
Test 12 – pressure switch
• Verify that the voltage from the right side of R50 to
ground (TP1) reads approximately 0.0463 VDC
multiplied by psi. For example, when the air regulator is
set to 80 psi, the voltage should be approximately
3.7 VDC.
• If the value is correct, replace the control board
(PCB3). If not, replace the pressure switch.
Test 13 – fan
• Force the fan into an over-temperature condition (place a jumper wire from J2 pin 1 to pin 2 to short it).
• Verify that the voltage across the fan on power board (PCB2) J1 pins 1 and 2 equals 24 VDC.
– If it does not, remove the fan connector (J1) and check the voltage on the power board (PCB2) J1 pins 1
and 2 again.
If it equals 24 VDC now, continue to the next step. If not, perform T
–
Place a jumper wire between the fan transistor (Q1) case to ground (TP1). If the fan turns on, continue to
•
est 6 – flyback circuit.
the next step. If not, replace the fan.
• Check the voltage between the left side of R7 and ground (TP1). If the VDC is zero (0), replace the control
board (PCB3). If the value is 5 VDC, replace the power board (PCB2).
3-30 powermax1250 Service Manual
4
MAINTENANCE
Test 14 – AUX switch
If the AUX switch on the ON/OFF switch (S1) is open when the system is powered up, the IF LED will illuminate
when the torch trigger is pulled or the start switch is pressed.
• Remove the J3 plug from the power board.
With the ON/OFF switch S1 in the OFF (O) position and the unit unplugged from electrical power, the AUX
•
switch should read as open.
• With the ON/OFF switch in the ON (I) position, the AUX switch should read closed.
Test 15 – flyback circuit failure
Multiple flashing indicator LEDs can signal a failure in the flyback circuit.
• Unplug the fan. If the LEDs no longer flash, replace the fan. If the LEDs are still flashing, plug in the fan
again and perform the next step.
• Unplug the solenoid valve. If the LEDs no longer flash, replace the solenoid valve. If the LEDS are still
flashing, plug in the solenoid valve again and perform the next step.
• Unplug the CNC interface cable or the ON/OFF pendant on the back of the machine. If the LEDS are still
flashing, plug in the CNC interface cable again and perform the next step.
• Measure for 5 VDC on the power board (R15 or J5 pin 2 to TP1) while the lights are flashing. If the value is
not a constant 5 VDC (±0.5V), disconnect the control board and measure for 5 VDC again. If it is still not a
constant 5 VDC, replace the power board (PCB2).
• If no problems are found while completing the previous steps, replace the control board (PCB3).
powermax1250 Service Manual 3-31
4
MAINTENANCE
RED
T80 hand torch: connector pinout diagrams and assembly
White wires (plunger)
Right
handle
Torch
body
Blue rubber seal
Pin 1
Pin 3
Red dot
Not used
Pin 10 violet wire (trigger)
Red wire (nozzle)
Orange wire (cap sense/trigger)
Pin 12 blue wire (cap sense)
Left
handle
Screws (5)
Spring
Trigger
3-32 powermax1250 Service Manual
4
T80M machine torch: connector pinout diagrams and assembly
J18
1
2
3
4
5
6
7
8
9
10
11
12
WHITE
WHITE
RED
ORANGE
BLUE
ELECTRODE
NOZZLE
CAP
MAINTENANCE
Blue rubber seal
Pin 1
White wires (plunger)
Pin 3
Red wires (nozzle)
Red dot
Pin 10 not used
Orange wire (cap sense)
Pin 12 blue wire (cap sense)
Strain
relief
Strain
relief
lock
Torch
body
Mounting
sleeve
Screws (3)
O-ring
Positioning
sleeve
powermax1250 Service Manual 3-33
4
MAINTENANCE
Component replacement
DANGER
ELECTRIC SHOCK CAN KILL
• Use extreme caution when working near live electrical circuits. Dangerous voltages exist inside the
power supply that can cause serious injury or death.
• See warnings on page 3-7 before proceeding.
Power cord replacement
Disconnect the electrical power and the gas supply before removing the old power cord.
1. Remove the power supply cover.
2. Insert the new power cord through the strain relief.
3. Install the power cord connections as shown below.
4. Tighten the strain relief onto the power cord.
5. Install the power supply cover.
6. Reconnect the electrical power and the gas supply.
L1
L2
Ground (PE)
L1 (U) L2 (V) L3 (W)
Ground (PE)
Single-phase
Standard unit
Black
L1
L2 White
PE Green
L1
L2 White Blue or Grey (V)
L3 Red Brown (W)
PE Green Green/Yellow
Three-phase
Standard unit CE unit
Black
Black (U)
3-34 powermax1250 Service Manual
4
Torch replacement
1
2
3
Turn OFF (O) the power switch.
ON
MAINTENANCE
OFF
Unplug the power cord from the power receptacle.
Open the Easy Torch Removal (ETR) door and route the lead through the end cap.
ETR
Door
End Cap
powermax1250 Service Manual 3-35
4
MAINTENANCE
4
5
6
7
lign the marks on the strain relief with the marks on the end cap.
A
Pull back the quick-release collar and insert the lead’s gas fitting.
Quick-release
collar
Slide the quick-release collar forward to lock in the gas fitting. Verify that the gas fitting is secure.
Verify that the red dot on the connector is on top, then plug in the electrical connector. Close the ETR door.
3-36 powermax1250 Service Manual
4
Filter element replacement
A
B
C
A
B
C
1
2
3
Disconnect the electrical power and the gas supply.
emove the filter bowl.
R
A. Pull down and hold the black release tab (If you do not
see the tab, check the back of the filter bowl.).
B. Rotate the filter bowl in either direction until it releases.
C. Pull the filter bowl down to remove it. The bowl has an
o-ring around the top. Do not discard the o-ring.
If the o-ring shows signs of wear or otherwise needs
replacement, verify that you have the correct o-ring for
the filter. (Each filter has a label on one side of the filter
body.)
• For AF30 filters, use part number 011105.
• For NAF3000 filters, use part number 011094.
Use a screwdriver to remove the old filter element from the
filter housing. Then install the new filter element.
MAINTENANCE
Note: Do not allow the filter element to turn when
loosening the screw.
Re-install the
A.
Hold the black tab down and slide the filter bowl
over the filter element.
B. Align the marks on the filter bowl and the filter
body
Rotate
C.
filter bowl.
.
the filter bowl until it locks in place.
powermax1250 Service Manual 3-37
4
MAINTENANCE
Work cable replacement
Disconnect the electrical power, gas supply and torch lead before removing the old work cable.
. Remove the power supply cover.
1
2. Install the strain relief to the power supply and secure it with a nut.
3. Tighten the strain relief collar onto the cable.
Caution: This is a high-current connection.
4. Connect the work cable to the power board at
J14.Tighten the nut to 10 in-lb (12 kg cm) of
torque.
5. Install the ETR barrier.
6. Install the power supply cover.
Connect to J14
Proper torque is critical.
Strain relief
ETR barrier
Work cable
3-38 powermax1250 Service Manual
4
Capacitor replacement
Removal
1. Disconnect the electrical power and gas supply before removing the power supply cover.
2. Remove the two screws that secure the capacitor(either C94 or C98) to the power board.
3. Remove the fan assembly.
4. Remove the capacitor from the fan side of the power supply.
Installation
1. Align the bleeder hole on the capacitor with the view hole
on the power board.
2. Install the new capacitor and secure it with 2 screws.
Tighten the screws to 20 in-lb (24 kg cm) of torque.
3. Install the power supply cover.
MAINTENANCE
Remove and install
capacitors from fan side.
Screws
for C94
Screws for
C98
Remove and install screws
from power board side.
Correct installation
powermax1250 Service Manual 3-39
4
MAINTENANCE
Power board removal and replacement
It may be necessary to remove the power board from the power supply to replace it or to replace components, such
as IGBTs, located behind it.
CAUTION
STATIC ELECTRICITY CAN DAMAGE CIRCUIT BOARDS
Use proper precautions when handling printed circuit boards.
• Store PC boards in anti-static containers.
• Wear a grounded wrist strap when handling PC boards.
Removal
1. Disconnect the electrical power and the gas supply.
2. Remove the cover from the power supply by removing the 12 screws and then lifting off the cover.
3. Remove the insulation panel by removing the screws on the right edge and bottom edge.
4. Disconnect the torch lead and then remove the ETR barrier.
5. Disconnect the pilot arc gate drive and the IGBT gate drives from the power board. Then remove the nuts that
attach the work lead and power cord ground cable to the power board.
Pilot arc gate
drive (J12)
IGBT gate drives
(J6, J7 and J8)
ork lead and ground
W
cable attachments
3-40 powermax1250 Service Manual
4
6. Disconnect the pin connectors and cables attached to the board at:
• J1, J2 and J3
•J5
• The ribbon cable at J14
The current sensor cable at J9
•
• J11 and J13
• J20 and J21
MAINTENANCE
Output diode
bridge screws (4),
black cable
attached with the
bottom left screw
and the black wire
attached with the
top left screw.
Pilot arc IGBT
screws (2)
Retaining
screw
Retaining
screw
Inverter IGBT screws
(3), yellow cable
attached with the
bottom screw
Retaining
screw
PFC IGBT screws (3),
black cable attached
with the bottom screw
(J17)
Current sensor
cable (J9)
Input diode bridge
screws (2), black
wire attached with
the bottom screw
Retaining
screw
Capacitor (C94)
screws (2)
Capacitor (C98) screws (2),
yellow cable and black wire
attached with the left screw
7.
Remove the screws that secure the power board to the capacitors, the input diode bridge, and the IGBTs.
Remove any cables connected at those points. Then remove the retaining screws from the power board.
8. Lift the power board out of the power supply and store it in an anti-static container until you are ready to
re-install it.
powermax1250 Service Manual 3-41
4
MAINTENANCE
Installation
1. Seat the power board into the base of the power supply. Then replace the retaining screws that hold the power
board in place.
2. Attach all gate drives, cables, IGBT and capacitor screws, wires and input and output diode screws.
Note: The required torque for each of these screws is 20 in-lb (24 kg cm).
Ribbon
cable
J5 3-pin,
red/yellow/black
Black wire
Black cable
J11
Pilot arc gate
drive (J12)
J1, 2-pin,
red/black
J2, 3-pin,
yellow/black
J3, 2-pin,
yellow/black
IGBT gate drives
(J6, J7 and J8)
Current sensor
cable (J9)
ellow cable
Y
J13, black wire
through the hole
in the board
3. Reattach the work lead, and power cord ground cable.
4. Re-install the ETR barrier and reconnect the torch lead.
5. Replace the insulation panel and the cover on the power supply.
6. Reconnect the gas supply and the electrical power.
J20, 3-pin,
red/black
J21, 2-pin,
red/black
Yellow cable
and black wire
Black cable
3-42 powermax1250 Service Manual
4
MAINTENANCE
33331
1
2
1
2
3
Heat sink component replacement
1. Unscrew the old components from the heat sink and use isopropyl alcohol to remove the old thermal grease.
2. Install the new components to the heat sink as shown below.
3. Use new thermal pads on the temperature sensor.
4. Use thermal grease on all components. Apply a thin coat (3 mils or paper equivalent) to the component, install
with screws, and tighten to the required torque.
5. Clean the excess grease from the heat sink.
Thermal grease,
10cc
Thermal pad
Notes:
Apply thermal grease and torque to 8 in-lb (9 kg cm).
Apply thermal grease and torque to 20 in-lb (23 kg cm).
Apply thermal grease and torque to 35 in-lb (40 kg cm).
powermax1250 Service Manual 3-43
4
MAINTENANCE
3-44 powermax1250 Service Manual
Section 4
PARTS – POWER SUPPLY
In this section:
Exterior .....................................................................................................................................................................4-2
Interior right side .......................................................................................................................................................4-3
Back interior right side ..............................................................................................................................................4-4
Interior fan side .........................................................................................................................................................4-5
Heat sink assembly...................................................................................................................................................4-6
Recommended spare parts ......................................................................................................................................4-7
powermax1250 Service Manual 4-1
PARTS – POWER SUPPLY
6
.
0
B
A
R
5
.
0
4
.
0
P
S
I
8
0
7
0
5
0
6
0
6
0
4
0
A
MP
S
8
0
2
5
A
C
+
_
1
2346875
Exterior
Part
Item number Description Qty.
128631 Kit: Labels, domestic 1
128632 Kit: Labels, CE 1
1 008965 Current adjustment knob 1
2 128624 Kit: Front panel, Domestic 1
3
4 128620 Kit: Power supply cover with labels, domestic 1
5
6 128629 Kit: Cover screws 12
128625 Kit: Front panel, CE 1
128974 Kit: Rear panel 1
128621 Kit: Power supply cover with labels, CE 1
123645 Work cable with clip, 20 ft (6.1 m) 1
7 128630 Kit: End panel screws 8
8 011096 Regulator knob 1
4-2 powermax1250 Service Manual
4
Interior right side
1234689107
5
11
12
PARTS – POWER SUPPLY
Part
Item number Description Designator Qty.
1 128660 Kit: Control board, domestic PCB3 1
128661 Kit: Control board, CE PCB3 1
2 128659 Kit: Pressure Sensor 1
3 128801 Kit: Pressure Regulator 1
4 123604 Pilot Arc IGBT Cable 1
5
6 128628 Kit: ETR Box 1
7 046116 Tubing, 8mm OD, 6mm ID, nylon 3 ft.
8
9 128663 Kit: Power board PCB2 1
10 108211 On/Off Knob 1
11 128662 Kit: Machine Interface 1
12 128665 Kit: Strain relief, arc voltage 1
128622 Kit: Gas Manifold with solenoid valve V1 1
123602 Gate Drive Cables 3
powermax1250 Service Manual 4-3
4
PARTS – POWER SUPPLY
1
2
3
Back interior right side
Part
Item number Description Designator Qty.
1 128672 Kit: Power switch S1 1
2 128671 Kit: EMI filter PCB, CE only PCB1 1
3 128666 Kit: 8 ft (2.5 m) power cable, domestic 3PH 1
128667 Kit: 8 ft (2.5 m) power cable, CE 3PH 1
4-4 powermax1250 Service Manual
3
Interior fan side
13465
2
PARTS – POWER SUPPLY
Part
Item number Description Designator Qty.
1 128627 Kit: Filter 1
011093 Air filter element 1
011094 O-ring, NAF3000 filter 1
011105 O-ring, AF30 filter 1
2 228021 Kit: Fan M1 1
3 128680 Kit: Inductor, input choke L2 1
4 128673 Kit: Capacitor C94, C98 2
5 128664 Kit: Power transformer T2 1
6 128679 Kit: Inductor, output choke L1 1
powermax1250 Service Manual 4-5
3
PARTS – POWER SUPPLY
1234685
7
Heat sink assembly
Part
Item number Description Designator Qty.
127128 Thermal grease, T-grease 2500TM, 10cc 1
1 128677 Kit: Output diode bridge D25 1
2 128676 Kit: Inverter IGBT Q6 1
3 128684 Kit: Temperature Sensor PCB4 1
4 228071 Kit: PFC IGBT Q7 1
128675 Kit: PFC IGBT
For serial numbers below 1250-014785 or 1250014795 (CE)
5 128678 Kit: Input diode bridge D24 1
6 128670 Kit: Snubber resister (7.5 Ω)1
7 128674 Kit: pilot arc IGBT Q8 1
8 128669 Snubber resister (20 Ω)1
Reference Section 3,
Heat sink component replacement
, for torque specifications.
4-6 powermax1250 Service Manual
4
PARTS – POWER SUPPLY
Recommended spare parts
Part number ..................................Description...................................................................................................Page
eference
r
008965............................................Current adjustment knob ..................................................................................4-2
128660............................................Kit: Control board, domestic .............................................................................4-3
128661............................................Kit: Control board, CE.......................................................................................4-3
128659............................................Kit: Pressure sensor .........................................................................................4-3
128801............................................Kit: Pressure regulator ......................................................................................4-3
128622............................................Kit: Gas manifold with solenoid valve ...............................................................4-3
123106............................................Work cable with clamp, 20 ft (6.1 m) ................................................................4-3
128663............................................Kit: Power board ...............................................................................................4-3
128672............................................Kit: Power switch ..............................................................................................4-4
128671............................................Kit: EMI Filter PCB, CE only .............................................................................4-4
128627............................................Kit: Filter............................................................................................................4-5
011093 ............................................Air filter element................................................................................................4-5
011094 ............................................O-ring, NAF3000 filter.......................................................................................4-5
011105 ............................................O-ring, AF30 filter..............................................................................................4-5
228021............................................Kit: Fan .............................................................................................................4-5
128673............................................Kit: Capacitor ....................................................................................................4-5
127128............................................Thermal grease, 10 cc T-grease 2500..............................................................4-6
128677
128676............................................Kit: Inverter IGBT ..............................................................................................4-6
228071............................................Kit: PFC IGBT ...................................................................................................4-6
128675............................................Kit: PFC IGBT ...................................................................................................4-6
128678............................................Kit: Input diode bridge.......................................................................................4-6
128674............................................Kit: Pilot arc IGBT .............................................................................................4-6
............................................Kit: Output diode bridge....................................................................................4-6
For serial numbers below 1250-014785 or 1250-014795 (CE)
powermax1250 Service Manual 4-7
4
PARTS – POWER SUPPLY
4-8 powermax1250 Service Manual
Section 5
PARTS – TORCH AND CONSUMABLES
In this section:
T80 hand torch assembly .........................................................................................................................................5-2
T80M machine torch assembly.................................................................................................................................5-4
T80 consumable configurations................................................................................................................................5-6
T80M consumable configurations.............................................................................................................................5-7
Recommended spare parts ......................................................................................................................................5-8
powermax1250 Service Manual 5-1
4
PARTS – TORCH AND CONSUMABLES
T80 hand torch assembly
Item Part number Description Quantity
087001* T80 hand torch assembly with 25 ft (7.6 m) lead
087002* T80 hand torch assembly with 50 ft (15.2 m) lead
087047* T80 hand torch assembly with 75 ft (22.5 m) lead
1 128564 Kit: T80 torch main body replacement 1
2 027889 Retaining clip 1
3 058519 O-ring 1
4 128639 Kit: Cap-off sensor replacement 1
5 075571 Cap-off sensor screws 2
6 128521 Kit: T80/T80M torch head replacement 1
7 128644 Kit: Handle replacement 1
8 075586 Handle screws 5
9 002244 Safety trigger assembly 1
10 027254 Spring 1
11 128637 Kit: T80 25 ft (7.6 m) torch lead replacement 1
12 128636 Kit: T80 50 ft (15.2 m) torch lead replacement 1
13 128893 Kit: T80 75 ft (22.5 m) torch lead replacement 1
14 128638 Kit: ETR connector replacement 1
15 128642 Kit: T80 start switch replacement 1
* Top assembly includes the following consumables (See
consumable parts):
120926 Electrode 1
120925 Swirl ring 1
120928 Retaining cap 1
120929 Shield 1
120927 Nozzle 1
T80 consumable configurations
for descriptions of
5-2 powermax1250 Service Manual
4
PARTS – TORCH AND CONSUMABLES
1411121315
1234689107
5
powermax1250 Service Manual 5-3
2
PARTS – TORCH AND CONSUMABLES
T80M machine torch assembly
Item Part number Description Quantity
087003* T80M machine torch assembly with 15 ft (4.6 m) lead
087004* T80M machine torch assembly with 25 ft (7.6 m) lead
087005* T80M machine torch assembly with 35 ft (10.7 m) lead
087006* T80M machine torch assembly with 50 ft (15.2 m) lead
087048* T80M machine torch assembly with 75 ft (22.5 m) lead
1 128640 Kit: T80M torch main body replacement 1
2 027889 Retaining Clip 1
3 058519 O-ring 1
4 128639 Kit: Cap-off sensor replacement 1
5 075571 Cap-off sensor screws 2
6 128521 Kit: T80/T80M torch head repair 1
7 128643 Kit: Torch mounting sleeve replacement 1
8 075004 Torch mounting screws 3
9 128710 Torch positioning sleeve 1
10 128634 Kit: 15 ft (4.6 m) torch lead replacement 1
11 128633 Kit: 25 ft (7.6 m) torch lead replacement 1
12 128635 Kit: 35 ft (10.7 m) torch lead replacement 1
13 128641 Kit: 50 ft (15.2 m) torch lead replacement 1
14 128894 Kit: 75 ft (22.5 m) torch lead replacement 1
15 128638 Kit: ETR Repair 1
128645 Kit: Torch Mounting (for reassembly after installation) 1
* Top assembly includes the following consumables (See
consumable parts):
120926 Electrode 1
120925 Swirl ring 1
120928 Retaining cap 1
120930 Shield 1
120927 Nozzle 1
T80M consumable configurations
for details of
5-4 powermax1250 Service Manual
4
PARTS – TORCH AND CONSUMABLES
1
2
3
4
689
15
10
11
121314
7
5
powermax1250 Service Manual 5-5
2
PARTS – TORCH AND CONSUMABLES
T80 consumable configurations
Swirl ringElectrode
O-ring
058519
40A
Shield NozzleRetaining cap
20929
1
20928
1
20932
1
60A
120929 120931120928
Hand-held, shielded
80A
120929 120927120928
120925120926
O-ring
058519
Hand-held, FineCut
Gouging
60/80A
220325*
120979
For use with CE systems.
*
120977
220329120928
220059120928
120926
120926
220327
O-ring
058519
120925
5-6 powermax1250 Service Manual
4
T80M consumable configurations
PARTS – TORCH AND CONSUMABLES
Shield NozzleRetaining cap
40A
120930 120932120928
Swirl ringElectrode
O-ring
058519
60A
120930 120931120928
80A
Mechanized, shieldedUnshielded**
120930 120927120928
220325*
220329120928
120979
120926
120925120926
O-ring
058519
120925
Mechanized, FineCut
retaining cap
Ohmic Sensing
40A
220404
220061***
120979 220006120928
220061***
* For use with CE systems.
** In CE countries, unshielded
consumables may only be used in
mechanized torch applications.
Maintain torch-to-work distance of
approximately 3/16 inch (4.8 mm).
*** Use an ohmic sensing cap when a
compatible torch height controller is
installed.
O-ring
058519
60A
120979 220007120928
120925120926
80A
120979 120980120928
powermax1250 Service Manual 5-7
3
PARTS – TORCH AND CONSUMABLES
Recommended spare parts
art
P
number Description
058519 Torch o-ring
027055 Silicone lubricant, 1/4 Oz. Tube
128644 Kit: T80 torch handle replacement
128638 Kit: ETR connector replacement
075586 T80 torch handle screw (5 required)
002244 T80 torch trigger assembly with spring
027254 Replacement trigger spring, T80
128642 Kit: T80 start switch replacement
128564
128640 Kit: T80M machine torch main body replacement
128639 Kit: T80/T80M torch cap sensor replacement
128888 Kit: FineCut consumables
128889 Kit: FineCut consumables – CE
087001 T80 hand torch assembly with 25 ft (7.6 m) lead
087004 T80M machine torch assembly 25 ft (7.6 m) lead
Kit: T80 hand torch main body replacement
5-8 powermax1250 Service Manual
2
Section 6
WIRING DIAGRAMS
In this section:
Timing diagrams .......................................................................................................................................................6-2
Electrical schematics ................................................................................................................................................6-5
powermax1250 Service Manual 6-1
3
t=0
1
0
S
tart
t
Start
0
1
2ms
Debounced
A
rc
0
Pilot
1
2ms
D
igitized
X
FR signal
E
nable
Inverter
0
1
3ms
(
INV_EN
)
Icommand
0
25A
3
ms
Setpoint
8
0
1
6
12ms
Ipilot
(
Amps)
Gas
0
1
P
ostflow
60
Pcritical(15)
at Torch
(psi)
Gas Pressure
Time
x
Consumable
Re-Seat
0
225
Voltage
Arc
(volts)
~
~
10ms
typ
250
1.6
25
I Setpoint
0
(amps)
I Work Lead
10.0 sec
NORMAL MODE
1ms
2
5
150
210
0.4
16A
v
alid
3ms
tdelay
0
1
If > 5.0 sec
pilot arc time out
XFR signal
Digitized
in DSP and
Switch
Constant
Tor ch Lead
Length(feet)
50 50
tdelay
(msec)
Time Constant
(msec)
250
Machine Motion
1
2ms
1.75A/ms
1.75A/ms
1. 200ms DELAY IS FOR TORCH LEAD
PRESSURIZATION.
>
200 ms
1.
2. CURRENT (I) VALUES SHOWN FOR 80A UNIT.
I cut max
60A UNIT80A UNIT
80 60
I cut min 25 20
I pilot 16/25 14/20
REQUIREMENTS PER HYPERTHERM P/N 048266.
3. RoHS/WEEE COMPLIANT AND OTHER REGULATORY
D 15365 6-1-06 6-5-06
APPROVEDDATEDRAWNDATEECNREV
REVISIONS
DESCRIPTION
ITEM NO.
DRAWN BY
PURPOSES WITHOUT PERMISSION
FOR MANUFACTURING OR FABRICATION
FROM HYPERTHERM, INC.
THIS DRAWINGAND ALL INFORMATION
PROPRIETARY AND MAY NOT BE USED
CONTAINED THEREON IS CONSIDERED
MATERIAL
TOLERANCES ARE:
UNLESS OTHERWISE SPECIFIED:
2 PL DECIMAL±.01
FRACTIONS ±1/64
ANGULAR ±2∞
DIMENSIONS ARE IN INCHES.
3 PL DECIMAL±.005
PART MUST BE FREE OF BURRS AND SHARP
EDGES. BREAK SHARP EDGES IF NECESSARY
WITH CHAMFER OR RADIUS .015 MAX.
013341 013341B1
ELEC SCHEM:PMX1250 60/80A TMG
NTS 1 OF 2
3-9-01
Box-5010 Hanover, NH 03755-5010 603/643-3441
DATE
FILE NAME
DATEAPPROVED BY
SCALE SHEET
D
D
6-2 powermax1250 Service Manual
4
EA
~
3FFh
~
0
1
Setpoint
PA
0
CPA timeout
Icommand
0
1
16A
Reattach
transfer
causes
CPA OPERATION
40A
1.6A
I SETPOINT
0.4A
25A 25A
NOTE: UNIT IS ALREADY IN TRANSFER MODE
Digitized
XFR signal
in DSP
1ms
I work lead 25A
Digitized
Setpoint
MUST BE >10ms
1.75A/ms
MATERIAL
CONTAINED THEREON IS CONSIDERED
PROPRIETARYAN D MAY NOT BE USED
THIS DRAWING AND ALL INFORMATION
FROM HYPERTHERM, INC.
FOR MANUFACTURING OR FABRICATION
PURPOSES WITHOUT PERMISSION
FILE NAME
Box-5010 Hanover, NH 03755-5010 603/643-3441
013341 013341B2
ELEC SCHEM:PMX1250 60/80A TMG
NTS 2 OF 2
3-9-01
WITH CHAMFER OR RADIUS .015 MAX.
EDGES. BREAK SHARP EDGES IF NECESSARY
PART MUST BE FREE OF BURRS AND SHARP
3 PL DECIMAL ±.005
DIMENSIONS ARE IN INCHES.
ANGULAR ±2∞
FRACTIONS ±1/64
2 PL DECIMAL ±.01
UNLESS OTHERWISE SPECIFIED:
TOLERANCES ARE:
DRAWN BY
ITEM NO.
DESCRIPTION
DATE APPROVED BY
SCALE SHEET
DATE
If > 5.00 sec
M
ust be < 28us
1ms
D
powermax1250 Service Manual 6-3
4
WIRING DIAGRAMS
6-4 powermax1250 Service Manual
3
U22
U23
(VISIBLE FOR 10 SEC. AFTER EVENT)
T
ORCH STUCK OPEN
40 POSITION RIBBON CABLE
(
VISIBLE FOR 10 SEC. AFTER EVENT)
129683WIRE GROUP 123607
123603
003206
NA
041667
POWER SWITCH (S1)
MACHINE INTERFACE CABLE
POWER BD (PCB2)
FILTER (PCB1)
CONTROL BD (PCB3)
123603
041660
003206
041667
041663 041707
80 AMP UNIT
1.41 X Vac
129652
200-600vac
750
INPUT VOLTAGE
Vbus (Vac>541vac)
CORD
Vbus (Vac<540vac) 750
NA
129653
7050STATU S
GAS
45 6055 65 75 80 85
TSO
SP SPARE
0.10uF
009994
3
3
J4
108171
39
40
37
38
35
36
34
008924
0.01uF
100VDC
009990
TP1
IFB
ITF
VACR
C41
50V
R50
100
009073
C52
32
30
31
28
29
26
27
22
25
24
23
21
19
20
009994
VBUS
+5
C1
0.10uF
50V
+5
/IOC
009115
10
R4
R3
10
009115
TEMP
PCB4
SENSOR BD
HEATSINK
SENSOR
SA
PRESSURE
13 2
BY
J5
R
TEMP
SENSOR IN
XFMR
T2
J21
2BR13
B
2
X
SA
FAN
Y
1
J2
1R2
B
J1
GAS SOLENOID
SA
B32R
1
J20
X
+24
10
R
117
10
009115
009115
R116
+5
+
5
DIAGNOSTIC LED'S
START SIGNAL VALID
INVERTER INTERLOCK
(
BLINKING @ 1 SEC. RATE)
S
ELF DIAGNOSTICS FAILURE
INSTALL JUMPER 108056 CE UNITS ONLY
PCB3
CPA
NORMAL
GOUGE
CURRENT
DOWN
MID
UP
CONTROL BD
P1
XFR
SDF
I
F
TRANSFER
START
(PE)
BRN
G
RN/YEL
BLK
BLU
C
E UNIT
CORD
S
1
J1
A
UX
FILTER
PCB1
J2
(
PE)
R
ED
GRN
AUX
DOMESTIC UNIT
BLK
W
HT
S
1
CORD
3
107
11
18
17
15
16
13
14
12
10
8
9
6
7
4
5
D8
C18
50V
0.10uF
009994
5.1V
1N5231B
109109
OUTB
R22 R8
009883
1/2W
2.21K
009414
499
009036
OUTA
8
+V7B-V
7C
9
R7
2.0K
3
1
109223
55V
I
RLZ44N
0.022ohm
C13
0.10uF
50V
009994
2
/MM
+24
Q1
2
3
1
J3
B
Y
1
+24
PE
2
MTG-4
1
3
2
4
5
6
3B 3C
4B 4C
6B 6C
5C5B
13
12
11
1C1B
2B 2C
16
14
15
042188
ULN2003A
U1
/PREFLOW
/SSR
/PA
t
60V 0.20A
RT7
109024
BRIDGE
~
-
~
~
D24
I
NPUT
+
GND
CONTROL
-6
C
OMT
18REG
1
8T
C
OMINV
18INV
FLYBACK
SUPPLY
POWER
SYSTEM
T1
18PA
COMPA
+5
+
10
+24
PE
CKT
PFC
CONTROL
POWER BD PCB2
SOFT START
K1
VacR
I
Vbus
1
3
2
J8
PFC
IGBT
Q7
C94
+
2
1
J6
3
2
Vbus
O
R J10
J9
PFC CHOKE
C98
+
J7
1
POWER
TRANSFORMER
20 OHM
Y
EL
J
13
YEL
P2
50W
BRN
B
RN
I
NVERTER
I
GBT
Q
6
T2
ITF
S
ENSOR
J19
/MM
+24
4
3
COMT
18T
2
1
12
10
11
INTERFACE
GND
CHASSIS
BLK
GRN/YEL
YEL
12
13
14
MACHINE
START
WHT
RED
3
4
CAP
1
C
OMT
8
9
6
7
4
5
2
3
J18
J17
CKT
J14
WHT
RED
NOZZLE
ELECTRODE
WORK LEAD
T
RANSFER
IFB
CURRENT
SENSOR
FEEDBACK
J12
IGBT
PILOT ARC
NC
INDUCTOR
OUTPUT
B
R
OUTPUT
DIODES
J11
7.5 ohm
100W
NA
1.41 X Vac
750 750
NA
60 AMP UNIT
087000(DOMESTIC) 087007(CE) 083169(DOMESTIC) 083170(CE)
1/3PH
230-400vac
3PH
200-600vac
1/3 PH
230-400vac
3PH
TEMP SENSOR BD (PCB4) 041723 041723
TIMING DIAGRAM 013341 013341
129652 129726
129732
123603 123603
005257 005257
041746 041746
041709 041710
041713 041713
013341 013341
041773
LOCKOUT
VIO
ORG
BLUE
129739
NOTES:
1. PIN 6 IS KEYING FEATURE ON 60A
2. PIN 9 IS LOCKOUT FEATURE
6
5
+
-
+24
24VDC @100MA MAX
TOLERANCES ARE:
UNLESS OTHERWISE SPECIFIED:
2 PL DECIMAL ±.01
FRACTIONS ±1/64
ANGULAR ±.5∞
DIMENSIONS ARE IN INCHES.
3 PL DECIMAL ±.005
PART MUSTBE FREE OF BURRS AND SHARP
EDGES. BREAK SHARP EDGES IF NECESSARY
WITH CHAMFER OR RADIUS .015 MAX.
PURPOSES WITHOUT PERMISSION
FOR MANUFACTURING OR FABRICATION
FROM HYPERTHERM, INC.
THIS DRAWING ANDALL INFORMATION
PROPRIETARY AND MAY NOT BE USED
CONTAINED THEREON IS CONSIDERED
MATERIAL
1=1 1 OF 1
SCALE
Box-5010 Hanover, NH 03755-5010 603/643-3441
SHEET
8 76 35 421
A
B
C
D
876 35 421
A
B
C
D
C
6-5
3
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