Thank you and congratulations on choosing Miller. Now
you can get the job done and get it done right. We know
you don’t have time to do it any other way.
That’s why when Niels Miller first started building arc
welders in 1929, he made sure his products offered
long-lasting value and superior quality. Like you, his
customers couldn’t afford anything less. Miller products
had to be more than the best they could be. They had to
be the best you could buy.
Today, the people that build and sell Miller products continue the
tradition. They’re just as committed to providing equipment and service
that meets the high standards of quality and value established in 1929.
This Owner’s Manual is designed to help you get the most out of your
Miller products. Please take time to read the Safety precautions. They will
help you protect yourself against potential hazards on the worksite. We’ve
made installation and operation quick and easy.
With Miller you can count on years of reliable
service with proper maintenance. And if for
some reason the unit needs repair, there’s a
Troubleshooting section that will help you
Miller is the first welding
equipment m anufacturer in
the U.S.A. to be registered
to the ISO 9001 Quality
System Standard.
Miller Electric manufactures a full line
of welders and welding related equipment.
For information on other quality Miller
products, contact your local Miller distributor
to receive the latest full line catalog or
individual catalog sheets. To locate your nearest
distributor call 1-800-4-A-Miller.
figure out what the problem is. The parts list
will then help you to decide which exact part
you may need to fix the problem. Warranty and
service information for your particular model
are also provided.
Working as hard as you
do – every power source
from M iller is backed b y
the m ost hassle-free w ar ranty in the business.
Miller offers a Technical
Manual which provides
more detailed service and
parts information for your
unit. T o obtain a Technical
Manual, contact your local
distributor. Your distributor
can also supply you with
Welding Process Manuals
such as SMAW, GTAW,
GMAW, and GMA W-P.
Safety Requirements for Arc Welding Equipment part 1: EN 60974-1: 1990
Arc Welding Equipment Part 1: Welding Power Sources: IEC 974-1
(April 1995 – Draft revision)
Degrees of Protection provided by Enclosures (IP code): IEC 529: 1989
Insulation coordination for equipment within low-voltage systems:
Part 1: Principles, requirements and tests: IEC 664-1: 1992
Electromagnetic compatibility (EMC) Product standard for arc welding equipment:
EN50199: August 1995
European Contact:Mr. Luigi Vacchini, Managing Director
MILLER Europe S.P.A.
Via Privata Iseo
20098 San Giuliano
Milanese, Italy
Telephone:39(02)98290-1
Fax:39(02)98281-552
dec_con1 10/95
SECTION 1 – SAFETY PRECAUTIONS - READ BEFORE
USING
1-1.Symbol Usage
Means Warning! Watch Out! There are possible hazards
with this procedure! The possible hazards are shown in
the adjoining symbols.
pom _nd_5/97
Y Marks a special safety message.
. Means “Note”; not safety related.
1-2.Plasma Arc Cutting Hazards
Y The symbols shown below are used throughout this manual to
call attention to and identify possible hazards. When you see
the symbol, watch out, and follow the related instructions to
avoid the hazard. The safety information given below is only
a summary of the more complete safety information found in
the Safety Standards listed in Section 1-4. Read and follow all
Safety Standards.
Y Only qualified persons should install, operate, maintain, and
repair this unit.
Y During operation, keep everybody, especially children, away.
CUTTING can cause fire or explosion.
Hot metal and sparks blow out from the cutting arc.
The flying sparks and hot metal, hot workpiece, and
hot equipment can cause fires and burns. Check
and be sure the area is safe before doing any cutting.
D Protect yourself and others from flying sparks and hot metal.
D Do not cut where flying sparks can strike flammable material.
D Remove all flammables within 35 ft (10.7 m) of the cutting arc. If this
is not possible, tightly cover them with approved covers.
D Be alert that sparks and hot materials from cutting can easily go
through small cracks and openings to adjacent areas.
D Watch for fire, and keep a fire extinguisher nearby.
D Be aware that cutting on a ceiling, floor, bulkhead, or partition can
cause fire on the hidden side.
D Do not cut on closed containers such as tanks or drums.
D Connect work cable to the work as close to the cutting area as prac-
tical to prevent cutting current from traveling long, possibly
unknown paths and causing electric shock and fire hazards.
D Never cut containers with potentially flammable materials inside –
they must be emptied and properly cleaned first.
D Do not cut in atmospheres containing explosive dust or vapors.
D Do not cut pressurized cylinders, pipes, or vessels.
D Do not cut containers that have held combustibles.
D Wear oil-free protective garments such as leather gloves, heavy
shirt, cuffless trousers, high shoes, and a cap.
D Do not locate unit on or over combustible surfaces.
D Remove any combustibles, such as a butane lighter or matches,
from your person before doing any cutting.
This group of symbols means Warning! Watch Out! possible
ELECTRIC SHOCK, MOVING PARTS, and HOT PARTS hazards.
Consult symbols and related instructions below for necessary actions
to avoid the hazards.
ELECTRIC SHOCK can kill.
Touching live electrical parts can cause fatal shocks
or severe burns. The torch and work circuit are
electrically live whenever the output is on. The input
power circuit and machine internal circuits are also
higher voltages than welding to start and maintain the arc (200 to 400
volts dc are common), but also uses torches designed with safety
interlock systems which turn of f the machine when the shield cup is
loosened or if tip touches electrode inside the nozzle. Incorrectly
installed or improperly grounded equipment is a hazard.
D Do not touch live electrical parts.
D Wear dry , hole-free insulating gloves and body protection.
D Insulate yourself from work and ground using dry insulating mats or
covers big enough to prevent any physical contact with the work or
ground.
D Do not touch torch parts if in contact with the work or ground.
D Turn off power before checking, cleaning, or changing torch parts.
D Disconnect input power before installing or servicing this equip-
ment. Lockout/tagout input power according to OSHA CFR
1910.147 (see Safety Standards).
D Properly install and ground this equipment according to its Owner’s
Manual and national, state, and local codes.
D Check and be sure that input power cord ground wire is properly
connected t o ground terminal in disconnect box or that cord plug is
connected to a properly grounded receptacle outlet – always verify
the supply ground.
D When making input connections, attach proper grounding conduc-
tor first.
D Frequently inspect input power cord for damage or bare wiring – re-
place cord immediately if damaged – bare wiring can kill.
D Turn off all equipment when not in use.
D Inspect and replace any worn or damaged torch cable leads.
D Do not wrap torch cable around your body.
D Ground the workpiece to a good electrical (earth) ground if required
by codes.
D Use only well-maintained equipment. Repair or replace damaged
parts at once.
D Wear a safety harness if working above floor level.
D Keep all panels and covers securely in place.
live when power is on. Plasma arc cutting requires
OM-217 Page 1
D Do not bypass or try to defeat the safety interlock systems.
D Use only torch(es) specified in Owner’s Manual.
D Keep away from torch tip and pilot arc when trigger is pressed.
D Clamp work cable with good metal-to-metal contact to workpiece
(not piece that will fall away) or worktable as near the cut as
practical.
D Insulate work clamp when not connected to workpiece to prevent
contact with any metal object.
SIGNIFICANT DC VOLTAGE exists after removal
of input power on inverters.
D Turn OFF inverter, disconnect input power, and discharge input
capacitors according to instructions in Maintenance Section
before touching any parts.
FLYING SPARKS can cause injury.
Sparks and hot metal blow out from the cutting arc.
Chipping and grinding cause flying metal.
D Wear approved face shield or safety goggles with side shields.
D Wear proper body protection to protect skin.
D Wear flame-resistant ear plugs or ear muffs to prevent sparks from
entering ears.
ARC RAYS can burn eyes and skin.
Arc rays from the cutting process produce intense
visible and invisible (ultraviolet and infrared) rays
that can burn eyes and skin.
D Wear face protection (helmet or shield) with correct shade of filter to
protect your face and eyes when cutting or watching. ANSI Z49.1
(see Safety Standards) suggests a No. 9 shade (with No. 8 as minimum) for all cutting currents less than 300 amperes. Z49.1 adds
that lighter filter shades may be used when the arc is hidden by the
workpiece. As this is normally the case with low current cutting, the
shades suggested in Table 1 are provided for the operator’s convenience.
D Wear approved safety glasses with side shields under your helmet
or shield.
D Use protective screens or barriers to protect others from flash and
glare; warn others not to watch the arc.
D Wear protective clothing made from durable, flame-resistant
material (leather and wool) and foot protection.
Table 1. Eye Protection For Plasma Arc Cutting
Current Level In AmperesMinimum Shade Number
Below 20
20 – 40
40 – 60
60 – 80
#4
#5
#6
#8
NOISE can damage hearing.
Prolonged noise from some cutting applications can
damage hearing if levels exceed limits specified by
OSHA (see Safety Standards).
D Use approved ear plugs or ear muffs if noise level is high.
D Warn others nearby about noise hazard.
FUMES AND GASES can be hazardous.
D Keep your head out of the fumes. Do not breathe the fumes.
D If inside, ventilate the area and/or use exhaust at the arc to remove
cutting fumes and gases.
D If ventilation is poor, use an approved air-supplied respirator.
D Read the Material Safety Data Sheets (MSDSs) and the manufac-
turer’s instruction for metals to be cut, coatings, and cleaners.
D Work in a confined space only if it is well ventilated, or while wearing
an air-supplied respirator. Fumes from cutting and oxygen depletion can alter air quality causing injury or death. Be sure the
breathing air is safe.
D Do not cut in locations near degreasing, cleaning, or spraying oper-
ations. The heat and rays of the arc can react with vapors to form
highly toxic and irritating gases.
D Do not cut on coated metals, such as galvanized, lead, or cadmium
plated steel, unless the coating is removed from the cutting area,
the area is well ventilated, and if necessary, while wearing an airsupplied respirator. The coatings and any metals containing these
elements can give off toxic fumes when cut.
D Do not cut containers with toxic or reactive materials inside or
containers that have held toxic or reactive materials – they must be
emptied and properly cleaned first.
PLASMA ARC can cause injury.
The heat from the plasma arc can cause serious
burns. The force of the arc adds greatly to the burn
hazard. The intensely hot and powerful arc can
quickly cut through gloves and tissue.
D Keep away from the torch tip.
D Do not grip material near the cutting path.
D The pilot arc can cause burns – keep away from torch tip when trig-
ger is pressed.
D Wear proper flame-retardant clothing covering all exposed body ar-
eas.
D Point torch away from your body and toward work when pressing
the torch trigger – pilot arc comes on immediately.
D Turn off power source and disconnect input power before disas-
sembling torch or changing torch parts.
D Use only torch(es) specified in the Owner’s Manual.
CYLINDERS can explode if damaged.
Gas cylinders contain gas under high pressure. If
damaged, a cylinder can explode. Since gas cylinders are normally part of metalworking processes,
be sure to treat them carefully.
D Protect compressed gas cylinders from excessive heat, mechani-
cal shocks, slag, open flame, sparks, and arcs.
D Install and secure cylinders in an upright position by chaining them
to a stationary support or equipment cylinder rack to prevent falling
or tipping.
D Keep cylinders away from any cutting or other electrical circuits.
D Never allow electrical contact between a plasma arc torch and a
cylinder.
D Never cut on a pressurized cylinder – explosion will result.
D Use only correct gas cylinders, regulators, hoses, and fittings de-
signed for the specific application; maintain them and associated
parts in good condition.
D Turn face away from valve outlet when opening cylinder valve.
D Keep protective cap in place over valve except when cylinder is in
use or connected for use.
D Read and follow instructions on compressed gas cylinders, asso-
ciated equipment, and CGA publication P-1 listed in Safety
Standards.
OM-217 Page 2
Cutting produces fumes and gases. Breathing
these fumes and gases can be hazardous to
your health.
1-3.Additional Symbols for Installation, Operation, and Maintenance
HOT PARTS can cause severe burns.
D Do not touch hot parts bare handed.
D Allow cooling period before working on torch.
MOVING PARTS can cause injury.
D Keep away from moving parts such as fans.
D Keep all doors, panels, covers, and guards
closed and securely in place.
FLYING METAL can injure eyes.
D Wear safety glasses with side shields or face
shield.
MAGNETIC FIELDS can affect pacemakers.
D Pacemaker wearers keep away.
D Wearers should consult their doctor before go-
ing near plasma arc cutting operations.
OVERUSE can cause OVERHEATING.
D Allow cooling period; follow rated duty cycle.
D Reduce amperage (thickness) or reduce duty
cycle before starting to cut again.
FIRE OR EXPLOSION hazard.
D Do not locate unit on, over, or near combustible
surfaces.
D Do not install unit near flammables.
D Do not overload building wiring – be sure power supply system is
properly sized, rated, and protected to handle this unit.
STATIC (ESD) can damage PC boards.
D Put on grounded wrist strap BEFORE handling
boards or parts.
D Use proper static-proof bags and boxes to
store, move, or ship PC boards.
H.F. RADIATION can cause interference.
D High frequency (H.F.) can interfere with radio
navigation, safety services, computers, and
communications equipment.
D Have only qualified persons familiar with elec-
tronic equipment perform this installation.
D The user is responsible for having a qualified electrician promptly
correct any interference problem resulting from the installation.
D If notified by the FCC about interference, stop using the equipment
at once.
D Have the installation regularly checked and maintained.
D Keep high-frequency source doors and panels tightly shut, keep
spark gaps at correct setting, and use grounding and shielding to
minimize the possibility of interference.
EXPLODING HYDROGEN hazard.
D When cutting aluminum underwater or with the
water touching the underside of the aluminum,
free hydrogen gas may collect under the workpiece.
D See your cutting engineer and water table instructions for help.
FALLING UNIT can cause injury.
D Use lifting eye to lift unit only, NOT running
gear, gas cylinders, or any other accessories.
D Use equipment of adequate capacity to lift unit.
D If using lift forks to move unit, be sure forks are long enough to ex-
tend beyond opposite side of unit.
ARC CUTTING can cause interference.
D Electromagnetic energy can interfere with
sensitive electronic equipment such as
computers and computer-driven equipment
such as robots.
D To reduce possible interference, keep cables as short as possible,
close together, and down low, such as on the floor.
D Locate cutting operation 100 meters from any sensitive electronic
equipment.
D Be sure this cutting power source is installed and grounded
according t o this manual.
D If interference still occurs, the user must take extra measures such
as moving the machine, using shielded cables, using line filters, or
shielding the work area.
OM-217 Page 3
1-4.Principal Safety Standards
Safety in Welding and Cutting, ANSI Standard Z49.1, from American
Welding Society, 550 N.W. LeJeune Rd, Miami FL 33126
Safety and Health Standards, OSHA 29 CFR 1910, from Superintendent of Documents, U.S. Government Printing Office, Washington, D.C.
20402.
Recommended Practices for Plasma Arc Cutting, American Welding
Society Standard A WS C5.2, from American W elding Society, 550 N.W .
LeJeune R d , M i a m i , F L 3 3 1 2 6
Recommended Safe Practices for the Preparation for W elding and Cutting of Containers That Have Held Hazardous Substances, American
Welding Society Standard AWS F4.1, from American W elding Society,
550 N.W. LeJeune Rd, Miami, FL 33126
National Electrical Code, NFPA Standard 70, from National Fire Protection Association, Batterymarch Park, Quincy, MA 02269.
1-5.EMF Information
Considerations About Welding Or Cutting And The Effects Of Low
Frequency Electric And Magnetic Fields
Welding or cutting current, as it flows through the welding or cutting
cables, will cause electromagnetic fields. There has been and still is
some concern about such fields. However, after examining more than
500 studies spanning 17 years of research, a special blue ribbon
committee of the National Research Council concluded that: “The body
of evidence, in the committee’s judgment, has not demonstrated that
exposure to power-frequency electric and magnetic fields is a humanhealth hazard.” However, studies are still going forth and evidence
continues t o b e examined. Until the final conclusions of the research are
reached, you may wish to minimize your exposure to electromagnetic
fields when welding or cutting.
To reduce magnetic fields in the workplace, use the following procedures:
Safe Handling of Compressed Gases in Cylinders, CGA Pamphlet P-1,
from Compressed Gas Association, 1235 Jefferson Davis Highway,
Suite 501, Arlington, VA 22202.
Code for Safety in Welding and Cutting, CSA Standard W117.2, from
Canadian Standards Association, Standards Sales, 178 Rexdale Boulevard, Rexdale, Ontario, Canada M9W 1R3.
Safe Practices For Occupation And Educational Eye And Face Protec-tion, ANSI Standard Z87.1, from American National Standards Institute,
1430 Broadway, New Y ork, NY 10018.
Cutting And Welding Processes, NFPA Standard 51B, from National
Fire Protection Association, Batterymarch Park, Quincy, MA 02269.
1. Keep cables close together by twisting or taping them.
2. Arrange cables to one side and away from the operator.
3. Do not coil or drape cables around your body.
4. Keep cutting power source and cables as far away from operator
as practical.
5. Connect work clamp to workpiece as close to the cut as possible.
About Pacemakers:
Pacemaker wearers consult your doctor first. If cleared by your doctor,
then following the above procedures is recommended.
OM-217 Page 4
SECTION 1 – CONSIGNES DE SÉCURITÉ – LIRE AVANT
UTILISATION
pom_fre _nd_4/97
1-1.Signification des symboles
Signifie Mise en garde ! Soyez vigilant ! Cette procédure
présente des risques de danger ! Ceux-ci sont identifiés
par des symboles adjacents aux directives.
Y Identifie un message de sécurité particulier.
. Signifie NOTA ; n’est pas relatif à la sécurité.
1-2.Dangers liés au coupage à l’arc au plasma
Y Les symboles présentés ci-après sont utilisés tout au long du
présent manuel pour attirer votre attention et identifier les risques de danger. Lorsque vous voyez un symbole, soyez
vigilant e t suivez les directives mentionnées afin d’éviter tout
danger. Les consignes de sécurité présentées ci-après ne font
que résumer l’information contenue dans les normes de sécurité énumérées à la section 1-5. Veuillez lire et respecter toutes
ces normes de sécurité.
Y L’installation, l’utilisation, l’entretien et les réparations ne
doivent être confiés qu’à des personnes qualifiées.
Y Au cours de l’utilisation, tenir toute personne à l’écart et plus
particulièrement les enfants.
LE COUPAGE présente un risque de
feu ou d’explosion.
Des particules de métal chaud et des étincelles peuvent
jaillir d e l a p i èce au moment du coupage. Les étincelles et le
métal chaud, la pièce à couper chauffée et l’équipement
commencer à travailler, assurez–vous que l’endroit est sécuritaire.
D Protégez–vous, ainsi que toute autre personne travaillant sur les lieux,
contre les étincelles et le métal chaud.
D Ne coupez pas dans un endroit où des étincelles pourraient atteindre des
matières inflammables.
D Déplacez toute matière inflammable se trouvant à l’intérieur d’un périmètre
de 10,7 m (35 pi) de la pièce à couper. Si cela est impossible, vous devez
les couvrir avec des housses approuvées et bien ajustées.
D Assurez–vous qu’aucune étincelle ni particule de métal ne peut se glisser
dans de petites fissures ou tomber dans d’autres pièces.
D Afin d’éliminer tout risque de feu, soyez vigilant et gardez toujours un extinc-
teur à la portée de la main.
D Si vous coupez sur un plafond, un plancher ou une cloison, soyez conscient
que cela peut entraîner un feu de l’autre côté.
D Ne coupez pas sur un contenant fermé tel qu’un réservoir ou un bidon.
D Fixez le câble de masse sur la pièce à couper, le plus près possible de la
zone à couper afin de prévenir que le courant de coupage ne prenne une
trajectoire inconnue ou longue et ne cause ainsi une décharge électrique ou
un feu.
D Ne coupez jamais des contenants qui peuvent contenir des matières inflam-
mables. Vous devez en premier lieu les vider et les nettoyer
convenablement.
D Ne coupez pas dans un endroit où l’atmosphère risque de contenir de la
poussière ou des vapeurs explosives.
D Ne coupez pas de bouteilles, de tuyaux ou de contenants pressurisés.
D Ne coupez pas de contenants qui ont déjà reçu des combustibles.
D Portez des vêtements de protection exempts d’huile tels que des gants en
cuir, une veste résistante, des pantalons sans revers, des bottes et un cas-
que.
D Ne placez pas le poste sur une surface combustible ou au–dessus de celle–
ci.
D Avant le coupage, retirez tout combustible de vos poches, par exemple un
briquet au butane ou des allumettes.
chaud peuvcnt causer un feu ou des brûlures. Avant de
Ce groupe de symboles signifie Mise en garde ! Soyez vigilant ! Il y a des risques de danger reliés aux CHOCS ÉLECTRIQUES, aux PIÈCES EN MOUVE-
MENT et aux PIÈCES CHAUDES. Reportez-vous aux symboles et aux directives ci-dessous afin de connaître les mesures à prendre pour éviter tout danger.
UNE DÉCHARGE ÉLECTRIQUE peut
entraîner la mort.
Le fait de toucher à une pièce électrique sous tension peut
donner une décharge fatale ou entraîner des brûlures
graves. Le chalumeau et le circuit de masse sont
L’alimentation d’entrée et les circuits internes de l’appareil le sont également.
Le coupage au plasma d’arc exige des tensions plus élevées que le soudage
pour amorcer et maintenir l’arc (souvent de 200 à 400 V CC), c’est pourquoi on
fait appel à des chalumeaux conçus avec un système de verrouillage
sécuritaire qui met l’appareil hors tension lorsque la capsule anti–feu est
desserrée ou si le tube touche l’électrode à l’intérieur de la buse. Un poste
incorrectement installé ou inadéquatement mis à la terre constitue un danger.
D Ne touchez pas aux pièces électriques sous tension.
D Portez des gants isolants et des vêtements de protection secs et sans
trous.
D Isolez–vous d e l a p i èce à couper et du sol en utilisant des housses ou des
tapis assez grands afin d’éviter tout contact physique avec la pièce à couper ou le sol.
D Ne touchez pas aux pièces du chalumeau si vous êtes en contact avec la
pièce à couper ou le sol.
D Mettez l ’appareil hors tension avant d’effectuer la vérification, le nettoyage
ou le changement d’une pièce du chalumeau.
D Coupez l’alimentation d’entrée avant d’installer l’appareil ou d’effectuer
l’entretien. Verrouillez ou étiquetez la sortie d’alimentation selon la norme
OSHA 29 CFR 1910.147 (reportez–vous aux Principales normes de sécu-
rité).
D Installez le poste correctement et mettez–le à la terre convenablement se-
lon les consignes du manuel de l’opérateur et les normes nationales,
provinciales et locales.
D Assurez–vous que le fil de terre du cordon d’alimentation est correctement
relié à la borne de terre dans la boîte de coupure ou que la fiche du cordon
est branchée à une prise correctement mise à la terre – vous devez tou-
jours vérifier la mise à la terre.
D Avant d’effectuer les connexions d’alimentation, vous devez relier le bon fil
de terre.
D Vérifiez fréquemment le cordon d’alimentation afin de vous assurer qu’il
n’est pas altéré ou à nu, remplacez–le immédiatement s’il l’est. Un fil à nu
peut entraîner la mort.
D L’équipement doit être hors tension lorsqu’il n’est pas utilisé.
D Vérifiez et remplacez les cosses du câble du chalumeau si elles sont usées
ou altérées.
D Le câble du chalumeau ne doit pas s’enrouler autour de votre corps.
D Si les normes le stipulent, la pièce à couper doit être mise à la terre.
D Utilisez uniquement de l’équipement en bonne condition. Réparez ou rem-
placez immédiatement toute pièce altérée.
D Portez un harnais de sécurité si vous devez travailler au–dessus du sol.
D Assurez–vous que tous les panneaux et couvercles sont correctement en
place.
D N’essayez pas d’aller à l’encontre des systèmes de verrrouillage de sécuri-
té ou de les contourner.
D Utilisez uniquement le ou les chalumeaux recommandés dans le manuel
de l’opérateur.
automatiquement actifs lorsque le poste est sous tension.
OM-217 Page 5
D N’approchez pas le tube du chalumeau et l’arc pilote lorsque la gâchette est
enfoncée.
D Le câble de masse doit être pincé correctement sur la pièce à couper, métal
contre métal (et non de telle sorte qu’il puisse se détacher), ou sur la table
de travail le plus près possible de la ligne de coupage.
D Isoler la pince de masse quand pas mis à la pièce pour éviter le contact
avec tout objet métallique.
Il y a DU COURANT CONTINU IMPORTANT dans
les convertisseurs après la suppression de l’ali-
mentation électrique.
D Arrêter les convertisseurs, débrancher le courant électrique, et décharger
les condensateurs d’alimentation selon les instructions indiquées dans la
partie entretien avant de toucher les pièces.
LES ÉTINCELLES VOLANTES risquent de provoquer des blessures.
Le coupage plasma produit des étincelles et projections de
métal à très haute température. Lorsque la pièce refroidit,
du laitier peut se former.
D Portez une visière ou des lunettes de sécurité avec des écrans latéraux ap-
prouvées.
D Portez des vêtements de protection adéquats afin de protéger votre peau.
D Ayez recours à des protège–tympans ou à un serre–tête ignifuges afin
d’éviter que les étincelles n’entrent dans vos oreilles.
LES RAYONS D’ARC peuvent entraîner des brûlures aux yeux et à la
peau.
Les rayons d’arc provenant du procédé de coupage
(ultraviolets et infrarouges) qui peuvent entraîner des brûlures aux yeux et à la
peau.
D Lorsque vous coupez ou regardez quelqu’un couper, portez un masque ou
un écran facial avec le filtre approprié. La norme ANSI Z49.1 (reportez–
vous aux Principales normes de sécurité) suggère d’utiliser un filtre de
teinte nd 9 (nd 8 étant le minimum) pour tout travail de coupage faisant ap-
pel à un courant de moins de 300 A. On mentionne également dans la
norme Z49.1 qu’un filtre plus faible peut être utilisé lorsque l’arc est caché
par la pièce à couper. Comme cela est habituellement le cas pour les travaux de coupage à faible courant, les teintes énumérées au tableau 1 sont
fournies à titre d’information pour l’opérateur.
D Porter des lunettes de sécuritéà coques latérales sous votre casque ou
écran facial.
D Ayez recours à des écrans protecteurs ou à des rideaux pour protéger les
autres contre les rayonnements et les éblouissements; prévenez toute
personne sur les lieux de ne pas regarder l’arc.
D Portez d e s v êtements confectionnés avec des matières résistantes et igni-
fuges (cuir et laine) et des bottes de protection.
Tableau 1. Protection des yeux pour le coupage au plasma d’arc
Intensité de courant en ampèresFiltre de teinte (minimum)
produisent des rayons visibles et invisibles intenses
Moins de 20no. 4
20 – 40no. 5
40 – 60no. 6
60 – 80no. 8
LE BRUIT peut endommager l’ouïe.
Certaines applications de coupage produisent un bruit
constant, ce qui peut endommager l’ouïe si le niveau
sonore dépasse les limites permises par l’OSHA (reportez–vous aux Principales normes de sécurité).
D Utilisez des protège–tympans ou un serre–tête antibruit si le niveau sonore
est élevé.
D Prévenez toute personne sur les lieux du danger relié au bruit.
LES FUMÉES ET LES GAZ peuvent
être dangereux.
Le coupage produit des vapeurs et des gaz. Respirer
ces vapeurs et ces gaz peut être dangereux pour la
santé.
D Ne mettez pas votre tête au–dessus des vapeurs. Ne respirez pas ces va-
peurs.
D Si vous êtes à l’intérieur au moment du coupage, ventilez la pièce ou ayez
recours à une ventilation aspirante installée près de l’arc pour évacuer les
vapeurs et les gaz.
D Si la ventilation est médiocre, utilisez un respirateur anti–vapeurs
approuvé.
D Veuillez lire le Material Safety Data Sheets (MSDS) et les instructions du
fabricant pour obtenir plus de renseignements sur les métaux à couper, les
enrobages et les nettoyants.
D Travaillez dans un espace restreint uniquement s’il est bien ventilé ou si
vous portez un respirateur anti–vapeurs. Les vapeurs causées par le coupage et l’épuisement de l’oxygène peuvent altérer la qualité de l’air et
entraîner des blessures ou la mort. Assurez–vous que l’air ambiant est sain
pour la santé.
D Ne coupez pas dans un endroit près d’opérations de décapage, de net-
toyage ou de vaporisation. La chaleur et les rayons d’arc peuvent réagir
avec les vapeurs et former des gaz hautement toxiques et irritants.
D Ne coupez pas des métaux enrobés tels que des métaux galvanisés,
contenant du plomb ou de l’acier plaqué au cadmium, à moins que l’enroba-
ge ne soit ôté de la surface du métal à couper, que l’endroit où vous
travaillez ne soit bien ventilé, ou, si nécessaire, que vous ne portiez un res-
pirateur anti–vapeurs. Les enrobages ou tous métaux qui contiennent ces
éléments peuvent créer des vapeurs toxiques s’ils sont coupés.
D Ne coupez pas de contenants qui renferment ou ont renfermés des matiè-
res toxiques ou réactives – vous devez en premier lieu les vider et les
nettoyer convenablement.
LE PLASMA D’ARC peut entraîner
des blessures.
La chaleur dégagée par le plasma d’arc peut entraîner de
sérieuses brûlures. La force de l’arc est un facteur qui
s’ajoute au danger de brûlures. La chaleur intense et la
puissance de l’arc peuvent rapidement passer au travers
de gants et de tissus.
D N’approchez pas le tube du chalumeau.
D Ne saisissez pas la pièce à couper près de la ligne de coupage.
D L’arc pilote peut causer des brûlures – n’approchez pas le tube du chalu-
meau lorsque vous avez appuyé sur le gâchette.
D Portez des vêtements de protection adéquats qui recouvrent tout votre
corps.
D Ne pointez pas le chalumeau en direction de votre corps ni de la pièce à
couper lorsque vous appuyez sur la gâchette – l’arc pilote s’allume automa-
tiquement.
D Mettez l ’alimentation hors tension et débranchez le cordon d’alimentation
avant de démonter le chalumeau ou de changer une pièce du chalumeau.
D Utilisez uniquement le ou les chalumeaux recommandés dans le manuel
de l’opérateur.
LES BOUTEILLES peuvent exploser
si elles sont endommagées.
Les bouteilles de gaz contiennent du gaz sous haute
pression. Si une bouteille est endommagée, elle peut
exploser. Puisque les bouteilles de gaz font habituellement
partie d’un processus de travail des métaux, assurez–vous
de les manipuler correctement.
D Protégez les bouteilles de gaz comprimé contre la chaleur excessive, les
chocs mécaniques, le laitier, la flamme, les étincelles et l’arc.
D Installez et attachez les bouteilles dans la position verticale à l’aide d’une
chaîne, sur un support stationnaire ou un châssis porte–bouteille afin de
prévenir qu’elles ne tombent ou ne basculent.
D Les bouteilles ne doivent pas être près de la zone de coupage ni de tout
autre circuit électrique.
D Un contact électrique ne doit jamais se produire entre un chalumeau de
plasma d’arc et une bouteille.
D Ne coupez jamais sur une bouteille pressurisée – une explosion en
résulterait.
D Utilisez uniquement des bouteilles de gaz, des détendeurs, des boyaux et
des raccords conçus pour l’application déterminée. Gardez–les, ainsi que
toute autre pièce associée, en bonne condition.
D Détournez votre visage du détendeur–régulateur lorsque vous ouvrez la
soupape de la bouteille.
D Le couvercle du détendeur doit toujours être en place, sauf lorsque vous
utilisez la bouteille ou qu’elle est reliée pour usage ultérieur.
D Lisez et suivez les instructions sur les bouteilles de gaz comprimé, l’équi-
pement connexe et le dépliant P–1 de la CGA mentionné dans les
Principales normes de sécurité.
OM-217 Page 6
1-3.Dangers supplémentaires en relation avec l’installation, le fonctionnement
et la maintenance
DES PIECES CHAUDES peuvent provoquer des brûlures graves.
D Ne pas toucher des parties chaudes à mains nues.
D Laisser refroidir avant d’intervenir sur la torche.
DES ORGANES MOBILES peuvent
provoquer des blessures.
D S’abstenir de toucher des organes mobiles tels que
des ventilateurs.
D Maintenir fermés et verrouillés les portes, panneaux,
recouvrements et dispositifs de protection.
DES PARTICULES VOLANTES
peuvent blesser les yeux.
D Porter des lunettes de sécurité avec protections laté-
rales ou frontales.
LES CHAMPS MAGNÉTIQUES peuvent affecter les stimulateurs cardiaques.
D Porteurs d e stimulateur cardiaque, restez à distance.
D Les porteurs sont priés de consulter leur médecin
avant d’approcher les opérations de coupage
plasma.
L’EMPLOI EXCESSIF peut
SURCHAUFFER L’ÉQUIPEMENT.
D Prévoir une période de refroidissement; respecter le
cycle opératoire nominal.
D Réduire l’ampérage (épaisseur) avant de continuer à
couper ou réduire le facteur de marche.
Danger D’EXPLOSION D’HY-
DROGÈNE.
D Lors du coupage d’aluminium partiellement ou totale-
ment immergé dans l’eau, de l’hydrogène libre peut
s’accumuler sous la pièce.
D Consultez votre ingénieur de coupage et les instruc-
tions de la table de coupage.
LA CHUTE DE L’APPAREIL peut
blesser.
D Utiliser l’anneau de levage uniquement pour soulever
l’appareil, NON PAS les chariot, les bouteilles de gaz
ou tout autre accessoire.
D Utiliser u n engin d’une capacité appropriée pour sou-
D En utilisant des fourches de levage pour déplacer l’unité, s’assurer que
les fourches sont suffisamment longues pour dépasser du côté opposé
de l’appareil.
lever l’appareil.
Risque D’INCENDIE OU
D’EXPLOSION.
D Ne pas placer l’appareil sur, au-dessus ou à proximité
de surfaces infllammables.
D Ne pas installer l’appareil à proximité de produits in-
flammables
D Ne pas surcharger l’installation électrique – s’assurer que l’alimentation est
correctement dimensionné et protégé avant de mettre l’appareil en service.
LES CHARGES ÉLECTROSTATI-
QUES peuvent endommager les circuits imprimés.
D Etablir la connexion avec la barrette de terre avant de
manipuler des cartes ou des pièces.
D Utiliser des pochettes et des boîtes antistatiques
pour stocker, déplacer ou expédier des cartes PC.
LE RAYONNEMENT HAUTE FRÉ-
QUENCE (H.F.) risque de provoquer
des interférences.
D Le Rayonnement haute frequence (H.F.) peut provo-
quer des interférences avec les équipements de ra-
dio–navigation et de communication, les services de
sécurité et les ordinateurs.
D Demander seulement à des personnes qualifiées familiarisées avec des
équipements électroniques de faire fonctionner l’installation.
D L’utilisateur est tenu de faire corriger rapidement par un électricien qualifié
les interférences résultant de l’installation.
D Si le FCC signale des interférences, arrêter immédiatement l’appareil.
D Effectuer régulièrement le contrôle et l’entretien de l’installation.
D Maintenir soigneusement fermés les portes et les panneaux des sources
de haute fréquence, maintenir les éclateurs à une distance correcte et utiliser une terre et et un blindage pour réduire les interférences éventuelles.
LE COUPAGE Ã L’ARC peut causer
des interférence.
D L’énergie électromagnétique peut gêner le fonction-
nement d’appareils électroniques comme des ordinateurs et des robots.
D Pour r éduire la possibilité d’interférence, maintenir les câbles aussi courts
que possible, les grouper, et les poser aussi bas que possible (ex. par
terre).
D Veiller à couper à une distance de 100 mètres de tout équipement électroni-
que sensible.
D S’assurer que la source de coupage est correctement branchée et mise à
la terre.
D Si l’interférence persiste, l’utilisateur doit prendre des mesures supplémen-
taires comme écarter la machine, utiliser des câbles blindés de des filtres,
ou boucler la zone de travail.
1-4.Principales normes de sécurité
Safety in Welding and Cutting, norme ANSI Z49.1, de l’American Wel-
ding Society, 550 N.W. Lejeune Rd, Miami FL 33126
Safety and Health Sandards, OSHA 29 CFR 1910, du Superintendent
of Documents, U.S. Government Printing Office, Washington, D.C.
20402.
Recommended Safe Practice for the Preparation for Welding and Cutting of Containers That Have Held Hazardous Substances, norme A WS
F4.1, de l ’American Welding Society, 550 N.W. Lejeune Rd, Miami FL
33126
National Electrical Code, NFPA Standard 70, de la National Fire Protection Association, Batterymarch Park, Quincy, MA 02269.
Safe Handling of Compressed Gases in Cylinders, CGA Pamphlet P-1,
de la Compressed Gas Association, 1235 Jefferson Davis Highway,
Suite 501, Arlington, VA 22202.
Règles de s écurité en soudage, coupage et procédés connexes, norme
CSA W117.2, de l’Association canadienne de normalisation, vente de
normes, 178 Rexdale Boulevard, Rexdale (Ontario) Canada M9W 1R3.
Safe Pra ctices For Occupation And Educational Eye And Face Protection, norme ANSI Z87.1, de l’American National Standards Institute,
1430 Broadway, New Y ork, NY 10018.
Cutting and Welding Processes, norme NFPA 51B, de la National Fire
Protection Association, Batterymarch Park, Quincy, MA 02269.
OM-217 Page 7
1-5.Information sur les champs électromagnétiques
Données sur le soudage électrique et sur les ef fets, pour l ’organisme,
des champs magnétiques basse fréquence
L’extrait suivant est tiré des conclusions générales du document intitulé
Biological Effects of Power Frequency Electric & Magnetic Fields –
Background Paper, OTA–BP–E–53 (Washington DC : U.S. Government Printing Office, mai 1989), publié par le Office of Technology
Assessment du Congrès américain : «... il existe maintenant d’abondantes données scientifiques compilées à la suite d’expériences sur la
cellule ou d’études sur des animaux et des humains, qui montrent clairement que les champs électromagnétiques basse fréquence peuvent
avoir des effets sur l’organisme et même y produire des transformations. Même s’il s’agit de travaux de très grande qualité, les résultats
sont complexes. Cette démarche scientifique ne nous permet pas
d’établir un tableau d’ensemble cohérent. Pire encore, elle ne nous permet pas de tirer des conclusions finales concernant les risques
éventuels, n i d ’offrir des conseils sur les mesures à prendre pour réduire sinon éliminer les risques éventuels». (Traduction libre)
Afin de réduire les champs électromagnétiques dans l’environnement
de travail, respecter les consignes suivantes :
1 Garder les câbles ensembles en les torsadant ou en les
attachant avec du ruban adhésif.
2 Mettre tous les câbles du côté opposé de l’opérateur.
3 Ne pas courber pas et ne pas entourer pas les câbles autour de
vous.
4 Garder le poste de soudage et les câbles le plus loin possible de
vous.
5 Relier la pince de masse le plus près possible de la zone de
soudure.
Consignes relatives aux stimulateurs cardiaques :
Les consignes mentionnées précédemment font partie de celles destinées aux personnes ayant recours à un stimulateur cardiaque. Veuillez
consulter votre médecin pour obtenir plus de détails.
OM-217 Page 8
SECTION 2 – DEFINITIONS
2-1.Warning Label Definitions
11.11.21.3
2
33.13.23.3
44.1
5
67
2.1
5.1
2.2
4.24.3
+
+
+
2.3
+
S-179 219
Warning! Watch Out! There are
possible hazards as shown by the
symbols.
1 Cutting sparks can cause
explosion or fire.
1.1 Keep flammables away from
cutting. Do not cut near
flammables.
1.2 Cutting sparks can cause
fires. Have a fire extinguisher
nearby, and have a
watchperson ready to use it.
1.3 Do not cut on drums or any
closed containers.
2 The plasma arc can cause
injury and burns.
2.1 Turn off power before
disassembling torch.
2.2 Do not grip material near
cutting path.
2.3 Wear complete body
protection.
3 Electric shock from torch or
wiring can kill.
3.1 Wear dry insulating gloves.
Do not wear wet or damaged
gloves.
3.2 Protect yourself from electric
shock by insulating 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
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) the label.
1/96
OM-217 Page 9
Warning! Watch Out! There are
possible hazards as shown by the
symbols.
Electric shock from wiring can kill.
Disconnect input plug or power
before working on machine.
Read the Owner’s Manual before
working on this machine.
1 Consult rating label for input
power requirements, and
check power available at the
job site – they must match.
2 Read Owner’s Manual and
inside labels for connection
points and procedures.
3 Move jumper links as shown
on inside label to match
?
1
?
?
2
V
A
V
3
5
3
voltage at job site.
4 Having a loop of extra length,
connect grounding conductor
first.
5 Connect line input conductors
as shown on inside label –
double-check all connections,
jumper link positions, and
input voltage before applying
power.
Duty Cycle is percentage of 10 mi n utes that unit can cut at rated load
without overheating.
If unit overheats, thermostat(s)
opens, output stops, Temperature
trouble light goes On, and cooling
fan runs. Wait fifteen minutes for
unit to cool or temperature light to
go off. Reduce amperage or duty
cycle before cutting or gouging.
Y Exceeding duty cycle can
damage unit and void
warranty.
Reduce Duty Cycle
A
OR
3-3.Cutting Speed
70 Ampere Model
duty1 4/95 – Ref. ST-159 463-B
The cutting speed curves show the
recommended maximum cutting
speed capabilities of the power
source and torch for mild steel of
various thickness.
Cut at speeds below the lines
shown to avoid poor cuts and torch
wear.
100 Ampere Model
ST-171 819 / ST-171 820
OM-217 Page 13
3-4.Selecting A Location
Movement
3
2
1
Location And Airflow
6
1 Lift Hook
Install lift hooks using supplied
bolts. T ighten to 25 ft/lb (34 N·m).
2 Spreader Bar (Not Supplied)
3 Lifting Cable (Not Supplied)
If lifting unit, use spreader and
cable.
4 Lifting Eye
5 Lifting Forks
If using lifting forks, extend forks
4
OR
9
beyond opposite side of unit.
6 Rating Label (Non CE Models
Only)
7 Rating Label (CE Models
Only, See Section 2-2)
Use rating label to determine input
power needs.
5
8 Plate Label (CE Models Only)
9 Line Disconnect Device
Locate unit near correct input pow-
er supply.
Y Special installation may be
required where gasoline or
volatile liquids are present –
see NEC Article 511 or CEC
Section 2 0 .
8
18 in (460
mm)
7
18 in (460
mm)
S-0439 / Ref. ST-800 402-B / ST-159 463-B
OM-217 Page 14
3-5.Dimensions And Weight
Dimensions
Height37-1/4 in (946 mm)
3-6.Tipping
A
B
Bottom Front
Width22-3/4 in (578 mm)
C
C
D
E
F
H
G
G
ST-159 464-B
Length20 in (508 mm)
A22-1/16 in (560 mm)
B21-1/32 in (210 mm)
C1-1/32 in (26 mm)
D18-13/16 in (478 mm)
E17-11/16 (449 mm)
F5-5/8 (143 mm)
G1-1/8 (29 mm)
H7/16 in (11 mm) Dia
Weight
405 lbs (184 kg)
Y Be careful when placing or
moving unit over uneven
surfaces.
OM-217 Page 15
3-7.Connecting Work Clamp And Gas/Air Supply
1
From Gas/Air Supply
2
4
3
5
1 Work Cable
Connect work cable to supplied
clamp as shown.
Connect work clamp to a clean lo-
cation on workpiece, as close to
cutting area as possible.
. Use only clean, dry air or nitro-
gen gas. Do not use any other
gas or combination of gases.
2 Air Filter/Regulator
3 Gas/Air Inlet Opening
4 Hose
5 Teflon Tape
Obtain hose with 5/8-18 right-hand
thread fitting. Wrap threads with
teflon tape, and install fitting in
opening.
Adjust gas/air pressure according
to Section 4-1.
Tools Needed:
5/8, 1-1/8 in
ST-800 958 / ST-800 701 / S-0818
OM-217 Page 16
3-8.Remote Control Connections
2
1T
1
2
Ref.
3
4
5
6
7
Torch
Switch
N.O.
Output
Sensor
4
Command
71
72
84
85
64
63
+10 Volts DC
65
White
6
(Brown)
Black
Y Turn Off power before instal-
ling remote control.
Remove left side panel.
1 Terminal Strip 1T
2 Connection Label
. Lead colors shown match
those of Remote Pendant Control supplied with machine-held
torches.
Route leads through hole below
torch and work cable access holes.
Refer to connection label and make
connections as follows:
Torch On/Off Connections:
3 Remote On/Off Switch
Connect switch leads to terminals 3
and 4 as shown. Switch closure
starts cutting arc.
Output Control Connections:
1
5
4 Jumper Link
For remote output control, remove
jumper link between terminals 9
and 10, and reinstall between terminals 8 and 9 as shown. This disables front panel Output Control
and enables remote output control.
5 Remote Output Control
Connect control leads to terminals
7, 8, and 11 as shown.
Output Sensor Connections:
6 Output Sensor Terminals
Terminals 5 and 6 connect to inter-
nal, normally-open contacts which
close when cutting output is present. Fo r e xample, use signal to start
automatic fixture.
Reinstall side panel.
Remote
Jumper
Common
Panel
Signal
Ground
Tools Needed:
8
9
10
11
3/8 in
S-169 259
66
70
43
Wiper (Red)
GND (Green)
3
Ref. ST-159 466-C / Ref. ST-150 802-A
OM-217 Page 17
3-9.Electrical Service Guide
60 Hertz Models70 Ampere Model100 Ampere Model
Input Voltage
Input Amperes At Rated Output
Max Recommended Standard Fuse Or Circuit
Breaker Rating In Amperes
Min Input Conductor Size In AWG/Kcmil
Max Recommended Input Conductor Length In
Feet (Meters)
Min Grounding Conductor Size In AWG/Kcmil
Reference: 1993 National Electrical Code (NEC)S-0092-J
230460575200230460575
54272285743730
8040301251256045
6101044810
226
(69)
81010661010
418
(127)
653
(199)
160
(49)
212
(65)
389
(119)
413
(126)
50 Hertz Models70 Ampere Model100 Ampere Model
Input Voltage
Input Amperes At Rated Output
Max Recommended Standard Fuse Or Circuit Breaker
Rating In Amperes
Min Input Conductor Size In AWG/Kcmil
Max Recommended Input Conductor Length In Feet
(Meters)
220380415220380415
573330774541
8050451257060
6810488
187
(57)
375
(114)
304
(93)
190
(58)
260
(79)
310
(94)
Min Grounding Conductor Size In AWG/Kcmil
Reference: 1993 National Electrical Code (NEC)S-0092-J
810106810
OM-217 Page 18
3-10. Placing Jumper Links And Connecting Input Power
2
220 VOLTS
L1L2L3
200 VOLTS
L1L2L3
L1L2L3
Connect GND/PE
Conductor First
L3 (W)
L2 (V)
L1 (U)
230 VOLTS
1
GND/PE
Earth Ground
Connect GND/PE
Conductor First
4
3
380 VOLTS
L1L2L3
230 VOLTS
L1L2L3
460 VOLTS
L1L2L3
L1 (U) L2 (V)
L3 (W)
415 VOLTS
L1L2L3
S-151 770
460 VOLTS
L1L2L3
S-031 770-A
575 VOLTS
L1L2L3
S-012 242-A
1
Check input voltage available at
site.
1 Jumper Link Label
Check label – only one is on unit.
2 Jumper Links
Move jumper links to match input
voltage.
3 Input And Grounding
Conductors
Select size and length using Section 3-9.
4 Line Disconnect Device
Select type and size of overcurrent
protection using Section 3-9.
Reinstall side panel.
Y Special installation may be
required where gasoline or
volatile liquids are present –
see NEC Article 511 or CEC
Section 2 0 .
Tools Needed:
3/8, 7/12, 1/2 in
Ref. ST-800 718
OM-217 Page 19
4-1.Controls
Setting Gas/Air Pressure
4
SECTION 4 – OPERATION
12345678
10
Set To 70 psi
(482 kPa)
9
1 Pilot Light
2 Power Switch
3 Output Control
Use control to set cutting output.
For non-shielded cutting, use a 1/8 in (3 mm)
standoff distance between torch tip and
workpiece.
4 Set/Run Switch
Place switch up to safely adjust gas/air pres-
sure. Only gas/air circuit is activated.
Place switch down to cut or gouge.
5 Ready Light
Use light to tell if unit is ready for operation.
Requires
80-150 p s i
(552-1034 kPa)
Supply
Ready light comes on when Power switch is
placed i n O n position, indicating that all safety shutdown systems are okay.
If Ready light does not come on, check
Trouble Lights.
6 Trouble Lights (See Section 5-3)
7 Trigger Hold Switch
To cut without holding torch trigger, place
switch up, and begin cutting by pressing and
releasing torch trigger. To stop cutting, press
and release trigger.
When set in down position, trigger must be
held closed while cutting.
8 Pilot Arc Control Switch
Place switch down for pulsed pilot arc
output. Use this position whenever possible
to reduce wear on torch and consumables.
Place switch up for a continuous pilot arc.
Use this position when cutting starts are
critical or while cutting expanded metals.
Setting Gas/Air Pressure
9 Air Filter/Regulator
10 Pressure Adjustment Knob
Place Set/Run switch up and turn on gas/air
supply. Lift knob and turn to adjust pressure.
Push knob down to lock in setting.
Place Set/Run switch down to begin cutting.
OM-217 Page 20
Ref. ST-159 465-A / ST-800 701 / S-0818
SECTION 5 – MAINTENANCE & TROUBLESHOOTING
5-1.Routine Maintenance
Check Torch
Tip, Electrode,
And Shield Cup
Replace
Unreadable
Labels
Clean And
Tighten Weld
Terminals
Each Use
Every Week
Check Shield Cup
Shutdown System
3 Months
Y Disconnect power
before maintaining.
. Maintain more often
during severe conditions.
Check Gas/Air
Pressure
Service Air
Filter/Regulator
Tape Torn Outer
Covering
Adjust
Spark
Gaps
OR
6 Months
Blow Out Or
Vacuum Inside
Replace
Cracked
Parts
Gas/Air Hose
Torch Body, Cable
OM-217 Page 21
5-2.Overload Protection: Fuses
1
Y Turn Off power and discon-
nect input power before
checking fuses.
Remove left side panel.
1 Main Fuse F1
F1 protects control transformer T2
from overload. If F1 opens, the
power source shuts down.
2 Timer/Control Board PC1
3 PC1 Fuse F1
4 PC1 Fuse F2
5 PC1 Fuse F4
6 Isolator/Filter Board PC5
7 PC5 Fuse F1
Fuses on PC1 and PC5 protect the
circuit boards from overload. If any
fuse opens, Ready light goes off,
and the unit does not cut.
Replace fuses as needed. See
Parts List for fuse ratings. Use
proper tool when removing fuses.
5-3.Overload Protection: Trouble Lights & Checking Shield Cup Shutdown System
If certain problems occur, the
Ready light goes off, a trouble light
comes on, and output stops.
1 Gas/Air Or Shield Cup Light
Lights if low gas/air pressure oc-
curs, if shield cup is loose, or if o-
1
2
3
Checking Torch Shield Cup Shutdown System
4
ring is defective.
Turn power Off, and check shield
cup connection (see torch Owner’s
Manual). Check for proper gas/air
pressure (see Section 4-1).
Check shield cup shutdown system
once a week as shown.
2 Torch-To-Tip Short Light
Lights if a short exists between tip
and electrode. Check tip and electrode (see torch Owner’s Manual).
3 Temperature Light
Lights if power source overheats
(see Section 3-2).
4 Torch Shield Cup
Turn Power On and loosen shield
cup. If shutdown system works
properly, Ready light goes off and
Gas/Air Or Shield Cup light comes
on. If not, turn power Off and check
for proper gas/air pressure (see
Section 4-1), blocked or leaking
hose, or loose shield cup (see torch
Owner’s Manual).
If system works properly, r etighten
cup and turn Off power .
Ref. ST-800 713
OM-217 Page 23
5-4.Adjusting Spark Gap
Y Turn Off power before ad-
justing spark gap.
Remove left side panel.
1 Tungsten End Of Point
Replace point if tungsten end dis-
appears; do not clean or dress
tungsten.
2 Spark Gap
Normal spark gap is 0.030 in (0.762
mm).
If adjustment is needed, proceed as
follows:
3 Adjustment Screw
Loosen screw. Place gauge of
proper thickness in spark gap.
4 Pressure Point
Apply slight pressure at point until
4
3
2
gauge is held firmly in gap. Tighten
screw.
Reinstall side panel.
Tools Need e d :
1
3/8 in
5/32 in
0.030 i n (0.762 mm)
Ref. ST-159 466-C / S-0201
OM-217 Page 24
5-5.Torch And Work Cable Connections
1T
1T
1
71
8
Y Turn Off power before re-
moving side panel.
If torch or work cable needs to be
removed or replaced, remove left
side panel, and proceed as follows:
1 Work Cable
2 Work (+) Output Terminal
3 Torch Cable
4 Pilot Cable
5 Torch (–) And Gas/Air Output
Connector
6 Pilot (+) Output Terminal
Connect cables as shown.
7 Terminal Strip 1T
8 Connection Label
9 Torch Switch Leads
For hand-held torches, refer to label
to connect leads. Reinstall side
panel.
10 Nut
11 Hose Clamp
For machine-held torches, tighten
nut and clamp to secure cables.
See Section 3-8 for remote control
connections.
Torch
Switch
N.O.
Output
Sensor
Command
Ref.
Remote
Jumper Com-
mon
Panel
10
Signal
11
Ground
2
3
4
5
6
7
8
9
S-169 259
72
84
85
64
63
65
66
70
43
Hand-Held Torch
572431
6
9
7
OR
Machine-Held Torch
1
3
Tools Needed:
1/2 in
Side View
3/8 in
4
Ref. ST-159 466-C / ST-800 702-B
1110
OM-217 Page 25
5-6.Troubleshooting
TroubleRemedy
No cutting output; Power light off;
Trouble lights off; Ready light o ff; fan motor FM does not run.
No cutting output; Power light on; Ready
light on; Trouble lights off; fan motor FM
running.
No cutting output; Power light on; Ready
light off; Trouble lights off; fan motor FM
running.
No control of output.Check for for proper position of jumper link on terminal strip 1T (see Sections 3-8).
No gas/air flow; Power light on; Ready
light on; Trouble lights off; fan motor FM
running.
No gas/air flow; Power light on; Ready
light off; Trouble lights off; fan motor FM
running.
No pilot arc or high frequency; difficulty
in establishing an arc.
Erratic pilot arc, difficulty in establishing
an arc, and lowered cutting capacity.
Gas/Air Or Shield Cup Trouble light
on; Ready light off.
Torch-To-Tip Short Trouble light on;
Ready light off.
Place Power switch in On position.
Place line disconnect device in On position (see Section 3-10).
Check line fuse(s) and replace if needed or reset circuit breakers (see Section 3-10).
Check main fuse F1 and replace if needed (see Section 5-2).
Have Factory Authorized Service Agent check contactor W.
Be sure work clamp is connected.
Check for proper torch switch lead connections (see Sections 3-8 and 5-5).
Check for for proper position of jumper link on terminal strip 1T (see Section 3-8).
Have Factory Authorized Service Agent check contactor W, control relay CR3, and firing board PC2.
Check fuses on timer/control board PC1 and isolator/filter board PC5 (see Section 5-2).
Have Factory Authorized Service Agent check timer/control board PC1.
Have Factory Authorized Service Agent check Output control R1, timer/control board PC1, hall device
HD1, and firing board PC2.
Check fuses on timer/control board PC1 and isolator/filter board PC5 (see Section 5-2).
Check for proper torch connections (see torch Owner’s Manual).
Check fuses on timer/control board PC1 and isolator/filter board PC5 (see Section 5-2).
Check fuses on timer/control board PC1 and isolator/filter board PC5 (see Section 5-2).
Check and adjust spark gap, if needed (see Section 5-4).
Check for damaged torch or torch cable (see torch Owner’s Manual).
Have Factory Authorized Service Agent check control relay CR1, timer/control board PC1, and firing
board PC2.
Check for excessive moisture and/or contaminants in gas/air supply.
Check for dirty air filter/regulator and clean, if needed (see manufacturer’s instructions).
Place Set/Run switch in Run position.
Check for sufficient gas/air supply pressure and correct gas/air pressure adjustment (see Section 4-1).
Check torch shield cup and o-ring (see torch Owner’s Manual).
Check for dirty air filter/regulator and clean, if needed (see manufacturer’s instructions).
Have Factory Authorized Service Agent check timer/control board PC1.
Check to make sure torch electrode is not touching tip inside the torch (see torch Owner’s Manual).
Check to make sure torch lead connections are tight on terminal strip 1T (see Sections 3-8 and 5-5).
OM-217 Page 26
TroubleRemedy
Temperature Trouble light on; Ready
light off.
No high gas/air flow (cutting air), or decreased cutting ability.
Fan motor FM does not run; Power light
and Ready light both on.
Trouble lights not working.Have Factory Authorized Service Agent check indicator board PC3 and timer/control board PC1.
Power light on; Trouble lights on; cutting
output available.
Thermostat TP1 and/or TP2 open (overheating). Allow fan to run; the thermostat closes when the unit has
cooled (see Section 3-2).
Have Factory Authorized Service Agent check timer/control board PC1.
Check for sufficient gas/air supply pressure and correct gas/air pressure adjustment (see Section 4-1).
Have Factory Authorized Service Agent check reed switch RS1, high air solenoid AS2, and air circuitry.
Check fan motor connections.
Have Factory Authorized Service Agent check timer/control board PC1.
OM-217 Page 27
SECTION 6 – ELECTRICAL DIAGRAMS
OM-217 Page 28
SC-183 062-A
Figure 6-1. Circuit Diagram For 60 Hertz Power Sources
Figure 6-2. Circuit Diagram For 50 Hertz Power Sources
SC-176 919-A
OM-217 Page 29
SECTION 7 – HF IN PLASMA CUTTING
7-1.High Frequency In Plasma Arc Cutting (PAC)
1
2
6
3
Work
Plasma Arc Cutting (PAC)
5
4
1 Plasma Arc Torch
2 High-Frequency Voltage
Used inside torch to ionize gap
between electrode and tip to help
start the pilot arc.
3 Electrode
4 Pilot Arc
5Tip
6 Shield Cup
7-2.Sources Of High-Frequency Radiation From Incorrect Installation
Cutting Zone
11, 12
50 ft
(15 m)
10
9
high_freq2 4/95 – S-0753
14
13
Sources Of Direct High-Frequency
Radiation
1 High-Frequency Source (Plasma Arc
Cutting Power Source)
2 Cables
3 Torch
4 Work Clamp
8
7
3
2
1
45
5 Workpiece
6 Work Table
Sources Of Conduction Of High
Frequency
7 Input Power Cable
8 Line Disconnect Device
9 Input Supply Wiring
6
S-0754
Sources Of Reradiation Of High
Frequency
10 Ungrounded Metal Objects
11 Lighting
12 Wiring
13 Water Pipes And Fixtures
14 External Phone And Power Lines
OM-217 Page 30
7-3.Correct Installation
A. Worksite Requirements
3
50 ft
(15 m)
Cutting Zone
50 ft
(15 m)
5
7
Wire
1
Nonmetal Building
4
Ground
Workpiece
If Required
By Codes
2
8
9
8
11
8
6
8
Ground All
Metal Objects
And All Wiring
In Cutting Zone
Using #12 AWG
1 Plasma Arc Cutting Source
Ground metal machine case, line disconnect
device, input supply, and workpiece (if
required).
2 Center Point Of Cutting Zone
Midpoint between high-frequency source
and cutting torch.
3 Cutting Zone
A circle 50 ft (15 m) from center point in all
directions.
4 Torch And Work Cables
Keep cables close together.
10
5 Conduit Joint Bonding And Grounding
Electrically join (bond) all conduit sections
using copper straps or braided wire. Ground
conduit every 50 ft (15 m).
6 Water Pipes And Fixtures
Ground water pipes every 50 ft (15 m).
7 External Power Or Telephone Lines
Locate high-frequency source at least 50 ft
(15 m) away from power and phone lines.
8 Grounding Rod
Consult the National Electrical Code for
specifications.
Metal Building
Ref. S-0755
Metal Building Requirements
9 Metal Building Panel Bonding Methods
Bolt or weld building panels together, install
copper straps or braided wire across seams,
and ground frame.
10 Windows And Doorways
Cover all windows and doorways with
grounded copper screen of not more than
1/4 in (6.4 mm) mesh.
11 Overhead Door Track
Ground the track.
OM-217 Page 31
Fig 8-3
171819
SECTION 8 – PARTS LIST
22
21
20
16
1415
13
12
31
30
29
2827
26
23
2435
25
3637
32
33
34
8
9
10
11
Fig 8-4
67
5
OM-217 Page 32
4
Fig 8-2
38
39
3
. Hardware is common and
2
1
not available unless listed.
ST-800 934–B
Figure 8-1. Main Assembly
Replace Coils at Factory or Authorized Factory Service Station
To maintain the factory original performance of your equipment, use only Manufacturer’s Suggested
Replacement Parts. Model and serial number required when ordering parts from your local distributor.
OM-217 Page 34
24
23
22
21
20
3
1
2
4
5
6
7
8
9
10
11
12
13
14
15
. Hardware is common and
not available unless listed.
19
18
17
16
ST-800 935-A
Figure 8-2. Panel, Front w/Components
Item
No.
Dia.
Mkgs.
Part
No.
DescriptionQuantity
Figure 8-2. Panel, Front w/Components (Fig 8-1 Item 37)
*Recommended Spare Parts.
+When ordering a component originally displaying a precautionary label, the label should also be ordered.
To maintain the factory original performance of your equipment, use only Manufacturer’s Suggested
Replacement Parts. Model and serial number required when ordering parts from your local distributor.
To maintain the factory original performance of your equipment, use only Manufacturer’s Suggested
Replacement Parts. Model and serial number required when ordering parts from your local distributor.
*Recommended Spare Parts.
♦Item is not part of HF Panel.
To maintain the factory original performance of your equipment, use only Manufacturer’s Suggested
Replacement Parts. Model and serial number required when ordering parts from your local distributor.
OM-217 Page 38
Notes
OM-217 Page 39
Notes
OM-217 Page 40
Notes
OM-217 Page 41
Notes
OM-217 Page 42
Effective January 1, 1998
(Equipment with a serial number preface of “KJ” or newer)
This limited warranty supersedes all previous Miller warranties and is exclusive with no other
LIMITED W ARRANTY – Subject to the terms and conditions
below, Miller Electric Mfg. Co., Appleton, Wisconsin,
warrants to its original retail purchaser that new Miller
equipment sold after the effective date of this limited warranty
is free of defects in material and workmanship at the time it is
shipped by Miller. THIS WARRANTY IS EXPRESSLY IN
LIEU OF ALL OTHER WARRANTIES, EXPRESS OR
IMPLIED, INCLUDING THE WARRANTIES OF
MERCHANTABILITY AND FITNESS.
Within the warranty periods listed below, Miller will repair or
replace any warranted parts or components that fail due to
such defects in material or workmanship. Miller must be
notified in writing within thirty (30) days of such defect or
failure, at which time Miller will provide instructions on the
warranty claim procedures to be followed.
Miller shall honor warranty claims on warranted equipment
listed below i n t h e event of such a failure within the warranty
time periods. All warranty time periods start on the date that
the equipment was delivered to the original retail purchaser,
or one year after the equipment is sent to a North American
distributor or eighteen months after the equipment is sent to
an International distributor.
1. 5 Years Parts – 3 Years Labor
* Original main power rectifiers
* Inverters (input and output rectifiers only)
2. 3 Years — Parts and Labor
* Transformer/Rectifier Power Sources
* Plasma Arc Cutting Power Sources
* Semi-Automatic and Automatic Wire Feeders
* Inverter Power Supplies
* Intellitig
* Engine Driven Welding Generators
(NOTE: Engines are warranted separately by the
engine manufacturer.)
3. 1 Year — Parts and Labor
* Motor Driven Guns (w/exception of Spoolmate 185)
* Process Controllers
* Positioners and Controllers
* Automatic Motion Devices
* Robots
* IHPS Power Sources
* Water Coolant Systems
* HF Units
* Grids
* Spot Welders
* Load Banks
* SDX Transformers
* Miller Cyclomatic Equipment
* Running Gear/Trailers
* Plasma Cutting Torches (except APT, ZIPCUT &
PLAZCUT Models)
* Deutz Engines (outside North America)
* Field Options
(NOTE: Field options are covered under True Blue
for the remaining warranty period of the product they
are installed in, or for a minimum of one year —
whichever is greater.)
4. 6 Months — Batteries
5. 90 Days — Parts and Labor
* MIG Guns/TIG Torches
guarantees or warranties expressed or implied.
* APT, ZIPCUT & PLAZCUT Model Plasma Cutting
Torches
* Remote Controls
* Accessory Kits
* Replacement Parts (No labor)
* Spoolmate 185
Miller’s True Blue Limited Warranty shall not apply to:
1. Items furnished by Miller, but manufactured by others,
such as engines or trade accessories. These items are
covered by the manufacturer’s warranty, if any.
2. Consumable components; such as contact tips, cutting
nozzles, contactors, brushes, slip rings, relays or parts
that fail due to normal wear.
3. Equipment that has been modified by any party other
than Miller, or equipment that has been improperly
installed, improperly operated or misused based upon
industry standards, or equipment which has not had
reasonable and necessary maintenance, or equipment
which has been used for operation outside of the
specifications for the equipment.
MILLER PRODUCTS ARE INTENDED FOR PURCHASE
AND USE BY COMMERCIAL/INDUSTRIAL USERS AND
PERSONS TRAINED AND EXPERIENCED IN THE USE
AND MAINTENANCE OF WELDING EQUIPMENT.
In the event of a warranty claim covered by this warranty, the
exclusive remedies shall be, at Miller’s option: (1) repair; or
(2) replacement; or, where authorized in writing by Miller in
appropriate cases, (3) the reasonable cost of repair or
replacement at an authorized Miller service station; or (4)
payment of or credit for the purchase price (less reasonable
depreciation based upon actual use) upon return of the
goods at customer’s risk and expense. Miller’s option of
repair or replacement will be F.O.B., Factory at Appleton,
Wisconsin, or F.O.B. at a Miller authorized service facility as
determined by Miller. Therefore no compensation or
reimbursement for transportation costs of any kind will be
allowed.
TO THE EXTENT PERMITTED BY LAW, THE REMEDIES
PROVIDED HEREIN ARE THE SOLE AND EXCLUSIVE
REMEDIES. IN NO EVENT SHALL MILLER BE LIABLE
FOR DIRECT, INDIRECT, SPECIAL, INCIDENTAL OR
CONSEQUENTIAL DAMAGES (INCLUDING LOSS OF
PROFIT), WHETHER BASED ON CONTRACT, TORT OR
ANY OTHER LEGAL THEORY.
ANY EXPRESS WARRANTY NOT PROVIDED HEREIN
AND ANY IMPLIED WARRANTY, GUARANTY OR
REPRESENTATION AS TO PERFORMANCE, AND ANY
REMEDY FOR BREACH OF CONTRACT TORT OR ANY
OTHER LEGAL THEORY WHICH, BUT FOR THIS
PROVISION, MIGHT ARISE BY IMPLICATION,
OPERA TION O F L AW, CUSTOM OF TRADE OR COURSE
OF DEALING, INCLUDING ANY IMPLIED WARRANTY OF
MERCHANTABILITY OR FITNESS FOR PARTICULAR
PURPOSE, WITH RESPECT TO ANY AND ALL
EQUIPMENT FURNISHED BY MILLER IS EXCLUDED
AND DISCLAIMED BY MILLER.
Some states in the U.S.A. do not allow limitations of how long
an implied warranty lasts, or the exclusion of incidental,
indirect, special or consequential damages, so the above
limitation or exclusion may not apply to you. This warranty
provides specific legal rights, and other rights may be
available, but may vary from state to state.
In Canada, legislation in some provinces provides for certain
additional warranties or remedies other than as stated
herein, and to the extent that they may not be waived, the
limitations and exclusions set out above may not apply. This
Limited Warranty provides specific legal rights, and other
rights may be available, but may vary from province to
province.
Warranty Questions?
Call
1-800-4-A-MILLER
for your local
Miller distributor.
miller_warr 1/98
Owner’s Record
Please complete and retain with your personal records.
Model NameSerial/Style Number
Purchase Date(Date which equipment was delivered to original customer.)
Distributor
Address
City
StateZip
Resources Available
Always provide Model Name and Serial/Style Number.
Contact your Distributor for:
To locate distributor nearest you call
1-800-4-A-Miller.
Contact t he D elivering C arrier for:
For assistance in filing or settling claims,
contact your distributor and/or equipment
manufacturer’s Transportation Department.
Welding Supplies and Consumables
Options and Accessories
Personal Safety Equipment
Service and Repair
Replacement Parts
Training (Schools, Videos, Books)
Technical Manuals (Servicing Information
and Parts)
Circuit Diagrams
Welding Process Handbooks
File a claim for loss or damage during
shipment.
Miller Electric Mfg. Co.
An Ill inoi s Tool Works Com pany
1635 West Spencer Street
Appleton, WI 54914 USA
International Headquarters–USA
USA Phone: 920-735-4505 Auto-Attended
USA & Canada FAX: 920-735-4134
International FAX: 920-735-4125
European Headquarters –
United Kingdom
Phone: 44 (0) 1204-593493
FAX: 44 (0) 1204-598066
www.MillerWelds.com
PRINTED IN USA 1999 Miller Electric Mfg. Co. 9/98
Loading...
+ hidden pages
You need points to download manuals.
1 point = 1 manual.
You can buy points or you can get point for every manual you upload.