INSTRUCTION MANUAL
PT-32
PLASMA ARC CUTTING TORCH
F-15-440-B
January, 2002
This manual provides installation and operation instructions for the following PT-32 torches:
P/N 0558001971- 25 ft (7.6 m), PT-32
P/N 0558001972 - 50 ft (15.2 m), PT-32
Torches and torch body assemblies purchased individually are supplied without electrode, nozzle, heat shield and valve pin. Order
individual components shown on pages 9 or 15.
These INSTRUCTIONS are for experienced operators. If you are not fully familiar with the principles of operation and safe
practices for arc welding equipment, we urge you to read our booklet, "Precautions and Safe Practices for Arc Welding, Cutting,
and Gouging", Form 52-529. Do NOT permit untrained persons to install, operate, or maintain this equipment. Do NOT attempt
to install or operate this equipment until you have read and fully understand these instructions. If you do not fully understand
these instructions, contact your supplier for further information. Be sure to read the Safety Precautions before installing or
operating this equipment.
Be sure this information reaches the operator.
You can get extra copies through your supplier.
USER RESPONSIBILITY
This equipment will perform in conformity with the description thereof contained in this manual and accompanying
labels and/or inserts when installed, operated, maintained and repaired in accordance with the instructions provided. This equipment must be checked periodically. Malfunctioning equipment should not be used. Parts that
are broken, missing, worn, distorted or contaminated should be replaced immediately. Should such repair or
replacement become necessary, the manufacturer recommends that a telephone or written request for service
advice be made to the Authorized Distributor from whom purchased.
This equipment or any of its parts should not be altered without the prior written approval of the manufacturer. The
user of this equipment shall have the sole responsibility for any malfunction which results from improper use, faulty
maintenance, damage, improper repair or alteration by anyone other than the manufacturer or a service facility
designated by the manufacturer.
TABLE OF CONTENTS
SECTION TITLE PAGE
PARAGRAPH
SECTION 1 DESCRIPTION ................................................................................................. 7
1.1 General ............................................................................................................. 7
1.2 Scope................................................................................................................ 7
1.3 Specifications.................................................................................................... 7
1.4 Optional Equipment........................................................................................... 9
SECTION 2 ASSEMBLY AND OPERATION ....................................................................... 10
2.1 General ............................................................................................................. 10
2.2 Assembly .......................................................................................................... 10
2.3 Steel Heat Shield Guards.................................................................................. 11
SECTION 3 MAINTENANCE ................................................................................................ 12
3.1 General ............................................................................................................. 12
3.2 Inspection and Cleaning of Consumables ......................................................... 12
3.3 Removing/Replacing Torch Head and Switch from Service Line....................... 13
SECTION 4 REPLACEMENT PARTS.................................................................................. 14
4.1 General ............................................................................................................. 14
4.2 Parts ................................................................................................................. 15
2
SAFETY PRECAUTIONS
WARNING:
These Safety Precautions are for
your protection. They summarize precautionary information from the references listed in
Additional Safety Information section. Before
performing any installation or operating procedures, be
sure to read and follow the safety precautions listed below
as well as all other manuals, material safety data sheets,
labels, etc. Failure to observe Safety Precautions can result
in injury or death.
PROTECT YOURSELF AND OTHERS
Some welding, cutting, and gouging
processes are noisy and require ear
protection. The arc, like the sun, emits
ultraviolet (UV) and other radiation and
can injure skin and eyes. Hot metal can cause burns.
Training in the proper use of the processes and equipment is essential to prevent accidents. Therefore:
1. Always wear safety glasses with side shields in any work
area, even if welding helmets, face shields, and goggles
are also required.
2. Use a face shield fitted with the correct filter and cover
plates to protect your eyes, face, neck, and ears from
sparks and rays of the arc when operating or observing
operations. Warn bystanders not to watch the arc and
not to expose themselves to the rays of the electric-arc
or hot metal.
3. Wear flameproof gauntlet type gloves, heavy long-sleeve
shirt, cuffless trousers, high-topped shoes, and a welding helmet or cap for hair protection, to protect against
arc rays and hot sparks or hot metal. A flameproof apron
may also be desirable as protection against radiated
heat and sparks.
4. Hot sparks or metal can lodge in rolled up sleeves,
trouser cuffs, or pockets. Sleeves and collars should be
kept buttoned, and open pockets eliminated from the
front of clothing
5. Protect other personnel from arc rays and hot sparks
with a suitable non-flammable partition or curtains.
6. Use goggles over safety glasses when chipping slag or
grinding. Chipped slag may be hot and can fly far.
Bystanders should also wear goggles over safety glasses.
FIRES AND EXPLOSIONS -- Heat from
flames and arcs can start fires. Hot slag
or sparks can also cause fires and explosions. Therefore:
1. Remove all combustible materials well away from the
work area or cover the materials with a protective nonflammable covering. Combustible materials include wood,
cloth, sawdust, liquid and gas fuels, solvents, paints and
coatings, paper, etc.
2. Hot sparks or hot metal can fall through cracks or
crevices in floors or wall openings and cause a hidden
smoldering fire or fires on the floor below. Make certain
that such openings are protected from hot sparks and
metal.“
3. Do not weld, cut or perform other hot work until the
workpiece has been completely cleaned so that there
are no substances on the workpiece which might produce flammable or toxic vapors. Do not do hot work on
closed containers. They may explode.
4. Have fire extinguishing equipment handy for instant use,
such as a garden hose, water pail, sand bucket, or
portable fire extinguisher. Be sure you are trained in its
use.
F15-660
5. Do not use equipment beyond its ratings. For example,
overloaded welding cable can overheat and create a fire
hazard.
6. After completing operations, inspect the work area to
make certain there are no hot sparks or hot metal which
could cause a later fire. Use fire watchers when necessary.
7. For additional information, refer to NFPA Standard 51B,
"Fire Prevention in Use of Cutting and Welding Pro-
--
cesses", available from the National Fire Protection Association, Batterymarch Park, Quincy, MA 02269.
ELECTRICAL SHOCK -- Contact with live
electrical parts and ground can cause
severe injury or death. DO NOT use AC
welding current in damp areas, if movement is confined, or if there is danger of
falling.
1. Be sure the power source frame (chassis) is connected
to the ground system of the input power.
2. Connect the workpiece to a good electrical ground.
3. Connect the work cable to the workpiece. A poor or
missing connection can expose you or others to a fatal
shock.
4. Use well-maintained equipment. Replace worn or damaged cables.
5. Keep everything dry, including clothing, work area, cables,
torch/electrode holder, and power source.
6. Make sure that all parts of your body are insulated from
work and from ground.
7. Do not stand directly on metal or the earth while working
in tight quarters or a damp area; stand on dry boards or
an insulating platform and wear rubber-soled shoes.
8. Put on dry, hole-free gloves before turning on the power.
9. Turn off the power before removing your gloves.
10. Refer to ANSI/ASC Standard Z49.1 (listed on next page)
for specific grounding recommendations. Do not mistake the work lead for a ground cable.
ELECTRIC AND MAGNETIC FIELDS —
May be dangerous. Electric current flowing through any conductor causes localized Electric and Magnetic Fields
(EMF). Welding and cutting current creates EMF around welding cables and
welding machines. Therefore:
1. Welders having pacemakers should consult their physician before welding. EMF may interfere with some pacemakers.
2. Exposure to EMF may have other health effects which are
unknown.
3. Welders should use the following procedures to minimize
exposure to EMF:
A. Route the electrode and work cables together. Secure
them with tape when possible.
B. Never coil the torch or work cable around your body.
C. Do not place your body between the torch and work
cables. Route cables on the same side of your body.
D. Connect the work cable to the workpiece as close as
possible to the area being welded.
E. Keep welding power source and cables as far away
from your body as possible.
3
10/98
FUMES AND GASES -- Fumes and
gases, can cause discomfort or harm,
particularly in confined spaces. Do
not breathe fumes and gases. Shielding gases can cause asphyxiation.
Therefore:
1. Always provide adequate ventilation in the work area by
natural or mechanical means. Do not weld, cut, or gouge
on materials such as galvanized steel, stainless steel,
copper, zinc, lead, beryllium, or cadmium unless positive mechanical ventilation is provided. Do not breathe
fumes from these materials.
2. Do not operate near degreasing and spraying operations. The heat or arc rays can react with chlorinated
hydrocarbon vapors to form phosgene, a highly toxic
gas, and other irritant gases.
3. If you develop momentary eye, nose, or throat irritation
while operating, this is an indication that ventilation is not
adequate. Stop work and take necessary steps to improve ventilation in the work area. Do not continue to
operate if physical discomfort persists.
4. Refer to ANSI/ASC Standard Z49.1 (see listing below)
for specific ventilation recommendations.
5. WARNING: This product, when used for welding or
cutting, produces fumes or gases which
contain chemicals known to the State of
California to cause birth defects and, in
some cases, cancer. (California Health &
Safety Code §25249.5 et seq.)
CYLINDER HANDLING -- Cylinders, if
mishandled, can rupture and violently
release gas. Sudden rupture of cylinder, valve, or relief device can injure or
kill. Therefore:
1. Use the proper gas for the process and use the proper
pressure reducing regulator designed to operate from
the compressed gas cylinder. Do not use adaptors.
Maintain hoses and fittings in good condition. Follow
manufacturer's operating instructions for mounting regulator to a compressed gas cylinder.
2. Always secure cylinders in an upright position by chain
or strap to suitable hand trucks, undercarriages, benches,
walls, post, or racks. Never secure cylinders to work
tables or fixtures where they may become part of an
electrical circuit.
3. When not in use, keep cylinder valves closed. Have
valve protection cap in place if regulator is not connected. Secure and move cylinders by using suitable
hand trucks. Avoid rough handling of cylinders.
4. Locate cylinders away from heat, sparks, and flames.
Never strike an arc on a cylinder.
5. For additional information, refer to CGA Standard P-1,
"Precautions for Safe Handling of Compressed Gases in
Cylinders", which is available from Compressed Gas
Association, 1235 Jefferson Davis Highway, Arlington,
VA 22202.
EQUIPMENT MAINTENANCE -- Faulty or
improperly maintained equipment can
cause injury or death. Therefore:
1. Always have qualified personnel perform the installation, troubleshooting, and maintenance work. Do not
perform any electrical work unless you are qualified to
perform such work.
2. Before performing any maintenance work inside a power
source, disconnect the power source from the incoming
electrical power.
3. Maintain cables, grounding wire, connections, power
cord, and power supply in safe working order. Do not
operate any equipment in faulty condition.
4. Do not abuse any equipment or accessories. Keep
equipment away from heat sources such as furnaces,
wet conditions such as water puddles, oil or grease,
corrosive atmospheres and inclement weather.
5. Keep all safety devices and cabinet covers in position
and in good repair.
6. Use equipment only for its intended purpose. Do not
modify it in any manner.
ADDITIONAL SAFETY INFORMATION -- For
more information on safe practices for electric arc welding and cutting equipment, ask
your supplier for a copy of "Precautions and
Safe Practices for Arc Welding, Cutting and
Gouging", Form 52-529.
The following publications, which are available from the
American Welding Society, 550 N.W. LeJuene Road, Miami, FL 33126, are recommended to you:
1. ANSI/ASC Z49.1 - "Safety in Welding and Cutting"
2. AWS C5.1 - "Recommended Practices for Plasma Arc
Welding"
3. AWS C5.2 - "Recommended Practices for Plasma Arc
Cutting"
4. AWS C5.3 - "Recommended Practices for Air Carbon
Arc Gouging and Cutting"
5. AWS C5.5 - "Recommended Practices for Gas Tungsten Arc Welding“
6. AWS C5.6 - "Recommended Practices for Gas Metal Arc
Welding"“
7. AWS SP - "Safe Practices" - Reprint, Welding Handbook.
8. ANSI/AWS F4.1, "Recommended Safe Practices for
Welding and Cutting of Containers That Have Held
Hazardous Substances."
MEANING OF SYMBOLS - As used throughout this manual: Means Attention! Be Alert!
Your safety is involved.
Means immediate hazards which, if
not avoided, will result in immediate,
serious personal injury or loss of life.
Means potential hazards which could
result in personal injury or loss of life.
Means hazards which could result in
minor personal injury.
4
SP98-10
PRÉCAUTIONS DE SÉCURITÉ
AVERTISSEMENT: Ces règles de sécurité ont pour objet
d’ assurer votre protection. Veillez à lire et à observer les
précautions énoncées ci-dessous avant de monter l’
équipement ou de commercer à l’utiliser. Tout défaut
d’observation de ces précautions risque d’entraîner des
blessures graves ou mortelles.
1. PROTECTION INDIVIDUELLE-- Les brûlures de la
peau et des yeux dues au rayonnement de l’arc
électrique ou du métal incandescent, lors du soudage
au plasma ou à l’électrode ou lors du gougeage à
l’arc, peuvent s’avérer plus graves que celles
résultant d’une exposition prolongée au soleil. Aussi
convient-il d’observer les précautions suivantes:
a. Portez un écran facial adéquat muni des plaques
protectrices et des verres filtrants appropriés afin de
vous protéger les yeux, le visage, le cou et les oreilles
des étincelles et du rayonnement de l’arc électrique
lorsque vous effectuez des soudures ou des coupes
ou lorsque vous en observez l’exécution.
AVERTISSEZ les personnes se trouvant à proximité
de façon à ce qu’elles ne regardent pas l’arc et à ce
qu’elles ne s’exposent pas à son rayonnement, ni à
celui du métal incandescent.
b. Portez des gants ignifugés à crispins, une tunique
épaisse à manches longues, des pantalons sans
rebord, des chaussures à embout d’acier et un
casque de soudage ou une calotte de protection, afin
d’éviter d’exposer la peau au rayonnement de l’arc
électrique ou du métal incandescent. ll est également
souhaitable d’utiliser un tablier ininflammable de
façon à se protéger des étincelles et du rayonnement
thermique.
c. Les étincelles ou les projections de métal incandes-
cent risquent de se loger dans des manches
retroussées, des bords relevés de pantalons ou dans
des poches. Aussi convient-il de garder boutonnés le
col et les manches et de porter des vêtements sans
poches à l’avant.
d. Protégez des étincelles et du rayonnement de l’arc
électrique les autres personnes travaillant à proximité
à l’aide d’un écran ininflammable adéquat.
e. Ne jamais omettre de porter des lunettes de sécurité
lorsque vous vous trouvez dans un secteur où l’on
effectue des opérations de soudage ou de coupage à
l’arc. Utilisez des lunettes de sécurité à écrans ou
verres latéraux pour piquer ou meûler le laitier. Les
piquetures incandescentes de laitier peuvent être
projetées à des distances considérables. Les
personnes se trouvant à proximité doivent également
porter des lunettes de protection.
f. Le gougeage à l’arc et le soudage à l’arc au plasma
produisent un niveau de bruit extrêmement élevé (de
100 à 114 dB) et exigent par conséquent l’emploi de
dispositifs appropriés de protection auditive.
2. PRÉVENTION DES INCENDES-- Les projections de
laitier incandescent ou d’étincelles peuvent
provoquer de graves incendies au contact de
matériaux combustibles solides, liquides ou gazeux.
Aussi faut-il observer les précautions suivantes:
a. Éloigner suffisamment tous les matériaux combus-
tibles du secteur où l’on exécute des soudures ou des
coupes à l’arc, à moins de les recouvrir complètement
d’une bâche non-inflammable. Ce type de matériaux
comprend notamment le bois, les vêtements, la sciure,
l’essence, le kérosène, les peintures, les solvants, le
gaz naturel, l’acétylène, le propane et autres substances combustibles semblables.
b. Les étincelles ou les projections de métal incandes-
cent peuvent tomber dans des fissures du plancher ou
dans des ouvertures des murs et y déclencher une
ignition lente cachée. Veiller à protéger ces ouvertures
des étincelles et des projections de métal.
c. N’exécutez pas de soudures, de coupes, d’opérations
de gougeage ou autres travaux à chaud à la surface
de barils, bidons, réservoirs ou autres contenants
usagés, avant de les avoir nettoyés de toute trace de
substance susceptible de produire des vapeurs
inflammables ou toxiques.
d. En vue d’assurer la prévention des incendies, il
convient de disposer d’un matériel d’extinction prêt à
servir immédiatement, tel qu’un tuyau d’arrosage, un
seau à eau, un seau de sable ou un extincteur portatif.
e. Une fois le travail à l’arc terminé, inspectez le secteur
de façon à vous assurer qu’aucune étincelle ou projection de métal incandescent ne risque de provoquer
ultérieurement un feu.
3. CHOC ÉLECTRIQUE-- Le gougeage à l’arc et à l’arc
au plasma exige l’emploi de tensions à vide
relativement importantes; or, celles-ci risquent de
causer des dommages corporels graves et même
mortels en cas d’utilisation inadéquate. La gravité du
choc électrique reçu dépend du chemin suivi par le
courant à travers le corps humain et de son intensité.
a. Ne laissez jamais de surfaces métalliques sous ten-
sion venir au contact direct de la peau ou de
vêtements humides. Veillez à porter des gants bien
secs.
b. Si vous devez effectuer un travail sur une surface
métallique ou dans un secteur humide, veillez à assurer votre isolation corporelle en portant des gants secs
et des chaussures à semelles de caoutchouc et en
vous tenant sur une planche ou une plate-forme
sèche.
c. Mettez toujours à la terre le poste de soudage/coupage
en le reliant par un câble à une bonne prise de terre.
d. N’utilisez jamais de câbles usés ou endommagés. Ne
surchargez jamais le câble. Utilisez toujours un
équipement correctement entretenu.
e. Mettez l’équipement hors tension lorsqu’il n’est pas en
service. une mise à la masse accidentelle peut en eff et
provoquer une surchauffe de l’équipement et un danger d’incendie. Ne pas enrouler ou passer le câble
autour d’une partie quelconque du corps.
f. Vérifiez si le câble de masse est bien relié à la pièce en
un point aussi proche que possible de la zone de
travail. Le branchement des câbles de masse à
l’ossature du bâtiment ou en un point éloigné de la
zone de travail augmente en effet le risque de passage d’un courant de sortie par des chaînes delevage
5
9/97
des câbles de grue ou divers chemins électriques.
g. Empêchez l’apparition de toute humidité, notamment
sur vos vêtements, à la surface de l’emplacement de
travail, des câbles, du porte-électrode et du poste de
soudage/coupage. Réparez immédiatement toute
fuite d’eau.
4. VENTILATION-- La respiration prolongée des fumées
résultant des opérations de soudage/coupage, à
l’intérieur, d’un local clos, peut provoquer des malaises et des dommages corporels. Aussi convient-il
d’observer les précautions suivantes:
a. Assurez en permanence une aération adéquate de
l’emplacement de travail en maintenant une ventilation naturelle ou à l’aide de moyens mécaniques.
N’effectuez jamais de travaux de soudage ou de
coupage sur des matériaux de zinc, de plomb, de
beryllium ou de cadmium en l’absence de moyens
mécaniques de ventilation capables d’empêcher
l’inhalation des fumées dégagées par ces matériaux.
b. N’effectuez jamais de travaux de soudage ou de
coupage à proximité de vapeurs d’hydrocarbure
chloré résultant d’opérations voisines de dégraissage
ou de pulvérisation. La chaleur dégagée ou le
rayonnement de l’arc peut déclencher la formation de
phosgène -- gaz particulièrement toxique -- et d’autres
gaz irritants, à partir des vapeurs de solvant.
c. Une irritation momentanée des yeux, du nez ou de la
gorge constatée au cours de l’utilisation de
l’équipement dénote un défaut de ventilation. Arrêtezvous de travailler afin de prendre les mesures nécessaires à l’amélioration de la ventilation. Ne poursuivez
pas l’opération entreprise si le malaise persiste.
d. Certaines commandes comportent des canalisations
où circule de l’hydrogène. L’armoire de commande est
munie d’un ventilateur destiné à empêcher la formation de poches d’hydrogène, lesquelles présentent un
danger d’explosion; ce ventilateur ne fonctionne que
si l’interrupteur correspondant du panneau avant se
trouve placé en position ON (Marche). Veillez à
manœuvrer cette commande en vérifiant si le
couvercle est bien en place, de façon à assurer
l’efficacité de la ventilation ainsi réalisée. Ne jamais
débrancher le ventilateur.
e. Les fumées produites par l’opération de soudage ou
de coupage peuvent s’avérer toxiques. Aussi est-il
nécessaire de disposer en permanence d’un dispositif
adéquat de ventilation de type aspirant, afin d’éliminer du voisinage de l’opérateur tout dégagement de
fumée visible.
f. Consultez les recommandations particulières en
matière de ventilation indiquées à l’alinéa 6 de la
norme Z49.1 de l’AWS.
5. ENTRETIEN DE L’ÉQUIPEMENT-- Un équipement
entretenu de façon défectueuse ou inadéquate risque
non seulement de réaliser un travail de mauvaise
qualité mais, chose plus grave encore, d’entraîner des
dommages corporels graves, voire mortels en
déclenchant des incendies ou des chocs électriques.
Observez par conséquent les précautions suivantes:
a. Efforcez-vous de toujours confier à un personnel qua-
lifié l’installation, le dépannage et l’entretien du poste
de soudage et de coupage. N’effectuez aucune
réparation électrique sur l’équipement à moins d’être
qua-lifié à cet effet.
b. Ne procédez jamais à une tâche d’entretien
quelconque à l’intérieur du poste de soudage/
coupage, avant d’avoir débranché l’alimentation
électrique.
c. Maintenez en bon état de fonctionnement les câbles,
le câble de masse, les branchements, le cordon
d’alimentation et le poste de soudage/coupage.
N’utilisez jamais le poste ou l’équipement s’il présente
une défectuosité quelconque.
d. Prenez soin du poste de soudage et de coupage et des
équipements accessoires. Gardez-les à l’écart des
sources de charleur, notamment des fours, de
l’humidité, des flaques d’eau maintenez-les à l’abri des
traces d’huile ou de graisse, des atmosphères corrosives et des intempéries.
e. Laissez en place tous les dispositifs de sécurité et tous
les panneaux de l’armoire de commande en veillant à
les garder en bon état.
f. Utilisez le poste de soudage/coupage conformément à
son usage prévu et n’effectuez aucune modification.
6. INFORMATIONS COMPLÉMENTAIRES RELATIVES
À LA SÉCURITÉ--
Pour obtenir des informations complémentaires sur les
règles de sécurité à observer pour le montage et
l’utilisation d’équipements de soudage et de coupage
électriques et sur les méthodes de travail
recommandées, demandez un exemplaire du livret N°
52529 “Precautions and Safe Practices for Arc Welding, Cutting and Gouging” publié par ESAB. Nous
conseillons également de consulter les publications
sui-vantes, tenues à votre disposition par l’American
Welding Society, 550 N.W. LeJuene Road, Miami, FL
32126:
a. “Safety in Welding and Cutting” AWS Z49.1
b. “Recommended Safe Practices for Gas-Shielded Arc
Welding “AWS A6. 1.
c. “Safe Practices for Welding and Cutting Containers
That Have Held Combustibles” AWS-A6.0.
d. “Recommended Saf e Practices for Plasma Arc Cutting”
AWS-A6. 3.
e. “Recommended Safe Practices for Plasma Arc Weld-
ing” AWS-C5. 1.
f. “Recommended Safe Practices for Air Carbon Arc
Gouging and Cutting” AWS-C5. 3.
g. “Code For Safety in Welding and Cutting”
CSA-Standard W117. 2.
9/97
6
SECTION 1 DESCRIPTION
1.1 GENERAL
The patent pending PT-32 is a manual torch with a 75°
head designed for use with several Plasma Arc Cutting
Packages using clean, dry air as the plasma gas. The
service line lengths available with the PT-32 torch are
25 feet (7.6 m) and 50 feet (15.2 m). The PT-32 torch
is rated to operate at a maximum of 90 amperes at
100% duty cycle.
The plasma arc cutting process employs high voltages. Contact with
"live" parts of the torch and machine must be avoided. Also, the
improper use of any of the gases employed can present a safety hazard.
Before beginning operation with the PT-32 torch, refer to the Safety
Precautions and operating instructions in the appropriate power source
instruction manual.
1.2 SCOPE
This manual is intended to provide the operator with all
the information required to assemble, operate, and
repair the PT-32 Plasma Arc Cutting Torch. For additional safety precautions, process instructions, and
system troubleshooting; refer to the appropriate instruction manual for your Plasma Arc Cutting Package.
1.3 SPECIFICATIONS
Refer to Figure 1-1 and Figure 1-3 for specifications.
Using the torch on any unit not equipped with a mating safety interlock
circuit may expose operator to unexpected high voltage.
ylbmessAhcroT
).oNtraP(
1791008550)m6.7(tf52)gk4.2(sbl2.5PSCDA09
2791008550)m2.51(tf05)gk4.4(sbl6.9PSCDA09
Torches and torch body assemblies purchased individually are supplied without electrode, nozzle,
heat shield and valve pin. Order individual components shown on pages 9 or 15.
eniLecivreS
htgneL
thgieW
yticapaCtnerruC
)ytud%001(
Figure 1-1. PT-32 Specifications
7
SECTION 1 DESCRIPTION
PT-32 CUT SPEED - CARBON STEEL
160
120
80
Cut Speed, IPM
40
0
0.25" 0.5" 0.75" 1" 1.25" 1.5"
AIR @ 75PSI and OUTPUT CURRENT 40AMPS
Material Thickness (In.) Speed (IPM)
Carbon Steel 1/16 200
90 Amps
70 Amps
60 Amps
Material Thickness
PT-32 CUTTING SPEEDS
Cutting
1/8 98
1/4 36
3/8 18
1/2 11
Stainless Steel 1/16 138
1/8 58
1/4 18
3/8 10
1/2 6
Aluminum 1/16 200
1/8 110
1/4 48
3/8 17
1/2 14
Figure 1-2. PT-32 Cutting Performance
8
SECTION 1 DESCRIPTION
1.4 OPTIONAL EQUIPMENT (NOT SUPPLIED WITH TORCH)
A. Spare Parts Kits - The spare parts kits listed in figure 1-3 are recommended for maintaining the PT-32 torch
with minimum downtime.
PowerCut 875 & PowerCut 1125 Systems Kit
DESCRIPTION
Heat Shield 0558001957 (QTY 2)
Stand Off Guide 0558002393 (QTY 1)
Nozzle, 50-70 A 0558002618 (QTY 4)
Drag Nozzle, 40 A 0558002908 (QTY 1)
Electrode 0558001969 (QTY 3)
Valve Pin 0558001959 (QTY 1)
Lubricant 17672 (QTY 1)
Wrench 19129 (QTY 1)
(50/70 A K it - P/N 0558002822)
PART NUMBER
Figure 1-3. Contents of PT-32 Spare Parts Kits
B. Steel Guards (for extending the life of the heat shield) - Refer to Figure 2-2 for installation and operation.
STAND OFF GUIDE TYPE
P/N 0558002393
PowerCut 1500 Systems Kit
DESCRIPTION
Heat Shield 0558001957 (QTY 2)
Stand Off Guide 0558002393 (QTY 1)
Nozzle, 90 A 0558002837(QTY 4)
Drag Nozzle, 40 A 0558002908 (QTY 1)
Electrode 0558001969 (QTY 3)
Valve Pin 0558001959 (QTY 1)
Lubricant 17672 (QTY 1)
Wrench 19129 (QTY 1)
Fuse 2Amp 600VAC 0558003075 (QTY 1)
9
PART N U MB E R
(90 A Kit - P/N 0558003062)
SECTION 2 ASSEMBLY AND OPERATION
2.1 GENERAL
2.2 ASSEMBLY
Make sure power switch on console is in the
"OFF" position and primary input power is
deenergized.
!
The torch head contains a gas flow check valve and a nozzle back pressure tap that act in conjunction with
circuitry within the power source. This system prevents the torch from being energized with high voltage if
the torch switch is accidentally closed when the shield is removed. ALWAYS REPLACE TORCH WITH THE
PROPER TORCH MANUFACTURED BY ESAB SINCE IT ALONE CONTAINS ESAB'S PATENTED SAFETY INTERLOCK.
WARNING
Install PT-32 front end parts as shown in Figure 2-1.
1
PLACE THE VALVE PIN INTO THE
ELECTRODE AND SCREW THE
ELECTRODE INTO THE TORCH
HEAD AND TIGHTEN SECURELY
WITH WRENCH #19120.
3
IMPORTANT!
MAKE SHIELD VERY TIGHT!
VALVE PIN
ELECTRODE
NOZZLE
SHIELD
*
2
PLACE NOZZLE INTO HEAT SHIELD
AND THREAD THIS ASSEMBL Y TO THE
TORCH BODY AND HAND TIGHTEN.
The valve pin is a crucial member of the sys-
*
tem. Its function is to open the gas flo w chec k
valve that is permanently assembled within
the torch head. If the pin is not correctly placed
in the electrode, the valve will not open and
the system will not function. The valv e pin also
improves electrode cooling by increasing the
velocity of air over the inner surface of the electrode.
Figure 2-1. Assembly of PT-32 Torch Front End Parts
10
SECTION 2 ASSEMBLY AND OPERATION
2.3 STEEL HEAT SHIELD GUARDS
(Refer to Figure 2-2)
NOTICE
Drag cutting, even with lower current levels may significantly
reduce the life of torch consumables. Attempting to Drag Cut
with higher currents (70 amps) may cause immediate catastrophic consumable damage.
ADJUST GUIDE BY TURNING IN A
CLOCKWISE DIRECTION ONLY. THIS
WILL PREVENT ACCIDENTAL LOOSENING OF SHIELD.
STEEL GUARD
STAND OFF GUIDE
P/N 0558002393
Drag Cutting with the PT-32 Torch
If drag cutting is desired, attach ESAB's standoff guide
(P/N 0558002393). For thin material, under 3/8", remove 50-70 amp or 90 amp nozzle from torch head,
insert ESAB's 40 amp nozzle (P/N 0558002908). Lower
current level to 40 amps or lower.
IF GUIDE IS TOO
TIGHT ON SHIELD,
OPEN SLOT WITH
SCREWDRIVER.
GUIDE AGAINST
STRAIGHT EDGE
OR FREE-HAND
CUT
IF TOO LOOSE, CLOSE
SLOT WITH VISE OR
LARGE PLIERS.
3/16" (4.6 mm)
TORCH-TO-WORK
Figure 2-2. Installation and Operation of Steel Heat Shield Guards
11
SECTION 3 MAINTENANCE
3.1 GENERAL
Before any maintenance is attempted on this
torch, make sure the power switch on the console is in the "OFF" position and the primary
input is deenergized.
3.2 INSPECTION AND CLEANING OF
CONSUMABLES
A. Disassemble the front end of the PT-32 as
follows:
1. Position torch head in a downward direction
(refer to Figure 2-1) and remove the shield.
The nozzle will drop from the head and
remain in the shield. Unscrew the electrode
to remove it and the valve pin. Remove these
components and inspect for wear. The nozzle
and electrode will generally wear at the same
rate. For best performance, replace together.
2. Nozzle: Replace if the orifice is clogged, nicked,
or out-of-round.
3. Electrode: When replacing the nozzle, always
inspect the electrode for wear. If more than
.06" of electrode Hafnium has eroded, replace
the electrode. If the electrode is used beyond
this recommended wear limit, damage to the
torch and power source may occur. Nozzle life
is also greatly reduced when using the electrode below the recommended limit. Refer to
Figure 3-1.
4. Shield: The face of the shield will gradually
erode from the heat and molten metal spray.
Replace the shield if more than 1/8 inch (3.2
mm) has eroded from the face. Refer to Figure 3-1.
5. O-ring: Lubricate as per Figure 3-1. Replace
if cut or worn. Air leaking past this seal will
reduce cutting performance.
B. To replace the above front end components,
refer to Figure 2-1.
THE HEAT SHIELD FACE WILL
GRADUALLY ERODE WITH USE.
SEE PARAGRAPH 3.2.A.4.
LUBRICANT (P/N 17672) CAN BE
APPLIED TO O-RING OR HEAT SHIELD.
HEAT SHIELD
NEW
Replace when eroded beyond
.06"(1.5mm) Depth.
O-RING
WORN
REPLACE ELECTRODE BEFORE PITTING
BECOMES DEEPER THAN .06 INCH (1.5 MM)
Figure 3-1. O-ring, Electrode, and Shield Maintenance
12
SECTION 3 MAINTENANCE
3.3 REMOVING / REPLACING TORCH HEAD
AND SWITCH FROM SERVICE LINE
3.1 Slide back the flex support to the end of the Handle.
HANDLE
FLEX SUPPORT
3.2 Slide Switch and Switch Band to end of handle. If
the switch is to be replaced, remove switch from
switch band and snip leads (2) at the spliced
connections. (Replacement switches are supplied
with new splices and extra long leads)
SWITCH BAND
SERVICE LINE ASSEMBLY
3.4 Remove the power cable from the Torch Head by
using two wrenches to prevent twisting brass tube.
TORCH HEAD
POWER CABLE
HANDLE
3.5 Remove the Pilot Arc connection from the Torch
Head using two wrenches to prevent twisting stainless steel tube.
PILOT ARC
CONNECTION
SPLICE CONNECTIONS
3.3 Carefully slide the handle back from the torch body
to expose the cable and hose connections.
SWITCH BAND
13
SECTION 4 REPLACEMENT PARTS
4.1 General
Replacement parts are illustrated on the following figures. When ordering replacement parts, order by part
number and part name, as listed. Always provide the
series or serial number of the unit on which the parts will
be used. The serial number is stamped on the unit
nameplate.
Replacement parts may be ordered from your ESAB
distributor or from:
ESAB Welding & Cutting Products
Attn.: Customer Service Dept.
PO Box 100545, Ebenezer Road
Florence, SC, 29501-0545
Refer to the Communication Guide located on the last
page of this manual for a list of customer service phone
numbers.
Revision History
The "A" edition of this book adds a Cutting Speed Chart for 40Amp Current; updates the Optional Equipment list
on page 9 and revises the assembly instructions on page 11.
The "B" edition of this book changes part number for the torch body and handle.
14
SECTION 4 REPLACEMENT PARTS
4.2 Parts
SWITCH
- 818224
BAND SWITCH
- 819127
BODY
-0558001965
HANDLE
-18635
TERMINAL FASTENER
- 950011
(2) WHITE LEADS
PILOT ARC LEAD
POWER CABLE
LABEL
-142Z25
SPLICE
- 674520
(Do Not Tape Switch Lead Splices to Cable)
BOOT
-49N83
CABLE ASSEMBLY
25FT. (7.6m) - 0558002841
50FT. (15.2m) - 0558002842
- 0558001959
ELECTRODE
- 0558001969
50 - 70 amp - 0558002618
90 amp - 0558002837
40 amp drag - 0558002908
HEAT SHIELD
- 0558001957
NOZZLE
40 AMP - 0558002908 (PC-875,1125 & 1500)
HEAT SHIELD
- 0558001957
VALVE PIN
DETAIL A
ELECTRODE
- 0558001969
NOZZLE
50/70 AMP- 0558002618 (PC-875 & 1125)
90 AMP - 0558002837 (PC-1500 ONLY)
VALVE PIN
- 0558001959
O-RING - 85W51
(Supplied with head)
PT-32 Exploded View
15
ESAB Welding & Cutting Products, Florence, SC Welding Equipment
COMMUNICATION GUIDE - CUSTOMER SERVICES
A. CUSTOMER SERVICE QUESTIONS:
Order Entry Product Availability Pricing Delivery
Order Changes Saleable Goods Returns Shipping Information
Telephone: (800)362-7080 / Fax: (800) 634-7548
Telephone: (800)783-5360 / Fax: (800) 783-5362
Telephone: (800) 235-4012/ Fax: (888) 586-4670
B. ENGINEERING SERVICE: Telephone: (843) 664-4416 / Fax : (800) 446-5693
Welding Equipment Troubleshooting Hours: 7:30 AM to 5:00 PM EST
Warranty Returns Authorized Repair Stations
C. TECHNICAL SERVICE: Telephone: (800) ESAB-123/ Fax: (843) 664-4452
Part Numbers Technical Applications Hours: 8:00 AM to 5:00 PM EST
Performance Features Technical Specifications Equipment Recommendations
D. LITERATURE REQUESTS: Telephone: (843) 664-5562 / Fax: (843) 664-5548
E. WELDING EQUIPMENT REPAIRS: Telephone: (843) 664-4487 / Fax: (843) 664-5557
Repair Estimates Repair Status Hours: 7:30 AM to 3:30 PM EST
F. WELDING EQUIPMENT TRAINING:
Telephone: (843)664-4428 / Fax: (843) 679-5864
Training School Information and Registrations Hours: 7:30 AM to 4:00 PM EST
G. WELDING PROCESS ASSISTANCE:
Telephone: (800) ESAB-123 / Fax: (843) 664-4454 Hours: 7:30 AM to 4:00 PM EST
H. TECHNICAL ASST. CONSUMABLES:
Telephone : (800) 933-7070 Hours: 7:30 AM to 5:00 PM EST
Eastern Distribution Center
Central Distribution Center
Western Distribution Center
Hours: 7:30 AM to 4:00 PM EST
IF YOU DO NOT KNOW WHOM TO CALL
Telephone: (800) ESAB-123/ Fax: (843) 664-4452/ Web:http://www.esab.com
Hours: 7:30 AM to 5:00 PM EST
F-15-440-B 2/2002 Printed in U.S.A.
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