Hobart HSW 25, HSW 15T, HSW 25T User guide

OM-715 189 193D

February 2001

Processes

Resistance Spot
Welding

Description

HSW 15, HSW 25,

HSW 15T, HSW 25T

Visit our website at

www.HobartWelders.com

From Hobart to You

Thank you and congratulations on choosing Hobart.
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.

This Owner’s Manual is designed to help you get the
most out of your Hobart 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 Hobart you can count on
years of reliable service with proper
maintenance. And if for some reason the unit

Hobart is registered to the
ISO 9001 Quality System
Standard.

needs repair, there’s a Troubleshooting section
that will help you 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 Hobart is backed by
the best warranty in the
business.

Hobart Welders manufactures a full line
of welders and welding related equipment.
For information on other quality Hobart
products, contact your local Hobart distributor
to receive the latest full line catalog or
individual catalog sheets. To locate your nearest

distributor or service agency call 1-877-Hobart1.

Hobart 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.

SECTION 1 – SAFETY PRECAUTIONS - READ BEFORE USING

spotom _nd_11/99

1-1. Symbol Usage

Means Warning! Watch Out! There are possible hazards
with this procedure! The possible hazards are shown in
the adjoining symbols.

Y Marks a special safety message.

. Means “Note”; not safety related.

1-2. Resistance Spot Welding 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.

SPOT WELDING can cause fire.

Sparks can fly off from the weld. The flying sparks,
hot workpiece, and hot equipment can cause fires,
burns, and explosions.

D Protect yourself and others from flying sparks and hot metal.
D Do not spot weld where flying sparks can strike flammable material.
D Remove all flammables within 35 ft (10.7 m) of the weld. If this is not

possible, tightly cover them with approved covers.

D Be alert that welding sparks can easily go through small cracks and

openings to adjacent areas.

D Watch for fire, and keep a fire extinguisher nearby.
D Do not spot weld on closed containers such as tanks or drums.
D Do not weld where the atmosphere may contain flammable dust,

gas, or liquid vapors (such as gasoline).

D Remove any combustibles, such as a butane lighter or matches,

from your person before doing any welding.

D After completion of work, inspect area to ensure it is free of sparks,

glowing e m b e r s , a n d f l a m e s .

D Do not exceed the equipment rated capacity.
D Use only correct fuses or circuit breakers. Do not oversize or

bypass them.

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.

D Properly install and ground this equipment according to this 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
double-check the supply ground before applying power.

D When making input connections, attach the grounding conductor

first – double-check connections.

D Keep cords dry, free of oil and grease, and protected from hot metal

and sparks.

D Frequently inspect input power cord and ground conductor for dam-

age or bare wiring – replace immediately if damaged – bare wiring
can kill. Check ground conductor for continuity.

D Turn off all equipment when not in use.
D For water-cooled equipment, check and repair or replace any leak-

ing hoses or fittings. Do not use any electrical equipment if you are
wet or in a wet area.

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, covers, and guards securely in place.

FLYING SPARKS can cause injury.

Very often sparks fly of f from the joint area.

D Wear approved face shield or safety goggles

with side shields.

D Wear protective garments such as oil-free, flame-resistant leather

gloves, heavy shirt, cuffless trousers, high shoes, and a cap.
Synthetic material usually does not provide such protection.

D Protect others in nearby areas by using approved flame-resistant or

noncombustible fire curtains or shields. Have all nearby persons
wear safety glasses with side shields.

ELECTRIC SHOCK can kill.

Touching live electrical parts can cause fatal shocks
or severe burns. The input power circuit and
machine internal circuits are also live when power is
on. 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 Disconnect input power before installing or servicing this equip-

ment. Lockout/tagout input power according to OSHA 29 CFR

1910.147 (see Safety Standards).

HOT METAL can cause burns.

Wear gloves or allow cooling period before servicing
tongs or tips.

D Always wear welding-type, insulated gloves

when using this equipment.

D Do not touch workpiece, tips, or tongs with bare hands.
D Allow tongs and tips to cool before touching.

OM-715 Page 1

MOVING PARTS can cause injury.

FUMES can be hazardous.

The tong tips, tongs, and linkages move during
operation.

D Keep away from moving parts.
D Keep away from pinch points.
D Do not put hands between tips.
D Keep all guards and panels securely in place.
D OSHA and/or local codes may require additional guarding to suit

the application.

D Do not breathe the fumes.
D If inside, ventilate the area and/or use exhaust at the weld to remove

fumes.

D In confined spaces, use an approved air-supplied respirator.
D Do not weld on coated metals, such as galvanized, lead, or cad-

mium plated steel, unless the coating is removed from the weld
area, the area is well ventilated, or if necessary, while wearing an
air-supplied respirator. The coatings and any metals containing
these elements can give off toxic fumes if welded.

D Read the Material Safety Data Sheets (MSDSs) and the manufac-

turer’s instructions for metals, coatings, and cleaners.

Coatings, cleaners, paints, and platings can pro­duce fumes when welded. Breathing these fumes
can be hazardous to your health.

1-3. Additional Symbols For Installation, Operation, And Maintenance

FIRE OR EXPLOSION hazard.

D Do not install or place unit on, over, or near

combustible surfaces.

D Do not install or operate unit near flammables.

D Do not overload building wiring – be sure power supply system is

properly sized, rated, and protected to handle this unit.

FALLING EQUIPMENT can cause injury.

D Use equipment of adequate capacity to lift the

unit.

D Have two people of adequate physical strength

lift portable units.

D Secure unit during transport so it cannot tip or fall.

MAGNETIC FIELDS can affect pacemakers.

D Pacemaker wearers keep away.
D Wearers should consult their doctor before go-

ing near resistance spot welding operations.

OVERUSE can cause OVER­HEATING.

D Allow cooling period; follow rated duty cycle.
D Reduce duty cycle before starting to weld

again.

FLYING METAL or DIRT can injure eyes.

D Wear approved safety glasses with side

shields or wear face shield.

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.
National Electrical Code, NFPA Standard 70, from National Fire Protec-

tion Association, Batterymarch Park, Quincy, MA 02269.

1-5. EMF Information

Considerations About Welding And The Effects Of Low Frequency
Electric And Ma g netic Fields

Welding current 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

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 York, NY 10018.

Cutting And Welding Processes, NFPA Standard 51B, from National
Fire Protection Association, Batterymarch Park, Quincy, MA 02269.

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.

OM-715 Page 2

SECTION 1 – CONSIGNES DE SÉCURITÉ – LIRE AVANT

UTILISATION

spotom _nd_Fre_11/99

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 soudage par points

Y Les symboles représentés ci-dessous sont utilisés dans ce

manuel pour attirer l’attention et identifier les dangers pos­sibles. Lorsque vous rencontrez un symbole, prenez garde et
suivez les instructions afférentes pour éviter tout risque. Les
instructions en matière de sécurité indiquées ci-dessous ne
constituent qu’un sommaire des instructions de sécurité plus
complètes fournies dans la normes de sécurité énumérées
dans la Section 1-4. Lisez et observez toutes les normes de sé-
curité.

Y Seul un personnel qualifié est autorisé à installer, faire fonc-

tionner, entretenir et réparer cet appareil.

Y Pendant le fonctionnement, maintenez à distance toutes les

personnes, notamment les enfants de l’appareil.

LE SOUDAGE PAR POINTS peut
provoquer un incendie.

Des étincelles peuvent être projetées de la soudure.
La projection d’étincelles ainsi que les pièces et
équipements chauds peuvent provoquer des
incendies, des brûlures et des incendies.

D Protégez-vous, ainsi que toute autre personne travaillant sur les

lieux, contre les étincelles et le métal chaud.

D Ne soudez pas par points dans un endroit où des étincelles peuvent

tomber sur des substances inflammables.

D Déplacez toute matière inflammable se trouvant dans un périmètre

de 10 m de la pièce à souder. Si cela est impossible, couvrez-les de
housses approuvées et bien ajustées.

D Des étincelles du soudage peuvent facilement passer dans

d’autres zones en traversant de petites fissures et des ouvertures.

D Afin d’éliminer tout risque de feu, soyez vigilant et gardez toujours

un extincteur à portée de main.

D Ne soudez pas par points sur un récipient fermé tel un réservoir ou

un bidon.

D Ne soudez pas si l’air ambiant est chargé de particules, gaz, ou

vapeurs inflammables (vapeur d’essence, par exemple).

D Avant de souder, retirez toute substance combustible de vos

poches telles qu’un briquet au butane ou des allumettes.

D Une fois le travail achevé, assurez-vous qu’il ne reste aucune trace

d’étincelles incandescentes ni de flammes.

D Ne dépassez pas la puissance permise de l’équipement.
D Utiliser exclusivement des fusibles ou coupe-circuits appropriés.

Ne pas augmenter leur puissance; ne pas les ponter.

UNE DÉCHARGE ÉLECTRIQUE peut
entraîner la mort.

Le fait de toucher à une pièce électrique sous
tension peut donner une décharge fatale ou entraî-
ner des brûlures graves. L’alimentation d’entrée et
les circuits internes de l’appareil sont également

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.

actifs lorsque le poste est sous tension. Un poste

Ce groupe de symboles signifie Mise en garde ! Soyez vigilant ! Il y
a des risques de danger reliés aux CHOCS ÉLECTRIQUES, aux
PIÈCES EN MOUVEMENT et aux PIÈCES CHAUDES. Reportez­vous aux symboles et aux directives ci-dessous afin de connaître les
mesures à prendre pour éviter tout danger.

D Coupez l’alimentation d’entrée avant d’installer l’appareil ou

d’effectuer l’entretien. Verrouillez ou étiquetez la sortie d’alimenta-
tion selon la norme OSHA 29 CFR 1910.147(reportez-vous aux
Principales normes de sécurité).

D Installez le poste correctement et mettez-le à la terre

conformément aux consignes de ce manuel et aux 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 du sectionneur ou que la fiche
du cordon est branchée à une prise correctement mise à la terre –
vous devez toujours vérifier la mise à la terre avant toute mise sous
tension.

D Avant d’effectuer les connexions d’alimentation, vous devez

connecter e n premier lieu le fil de terre - contrôlez les connexions.

D Les câbles doivent être exempts d’humidité, d’huile et de graisse;

protégez-les contre les étincelles et les pièces métalliques
chaudes.

D Assurez-vous régulièrement que les câbles d’alimentation et de

masse ne sont pas endommagés ou dénudé par endroit. Rempla-
cez-les immédiatement si c’est le cas : un câble dénudé peut
provoquer l a mort. Contrôlez la continuité de la mise à la terre.

D L’équipement doit être hors tension lorsqu’il n’est pas utilisé.
D Dans le cas d’équipements refroidis par eau, contrôlez les

conduites et raccords; remplacez-les s’ils présentent des fuites.
N’utilisez pas d’équipement électrique si vous êtes mouillé ou dans
une zone humide.

D Utilisez uniquement un équipement en bonne condition. Réparez

ou remplacez immédiatement toute pièce endommagée.

D Portez un h a r n a i s d e s écurité si vous devez travailler au-dessus du

sol.

D Maintenez en place les panneaux, couvercles et protections de

sécurité.

LES ÉTINCELLES VOLANTES
risquent de provoquer des

Des étincelles peuvent jaillir de la soudure.

blessures.

D Portez une visière ou des lunettes de sécurité

avec des écrans latéraux approuvées.

D Portez un équipement de protection: gants en cuir résistant au feu,

chemise épaisse, pantanlons sans revers, chaussures de sécurité
et casquette. Les matériaux synthétiques ne garantissent pas une
bonne protection.

D Protégez les autres occupants du local à l’aide d’un rideau ou d’un

écran ignifuge approprié. Assurez-vous que ces personnes portent
des lunettes de sécurité avec protections latérales.

LE MÉTAL CHAUD peut provoquer
des brûlures.

Portez des gants ou laissez refroidir les électrodres
avant de procéder à l’entretien.

D Portez toujours de gants de soudeur lorsque

vous utilisez cet équipement.

D Ne touchez pas les pièces ni les eléctrodes avec les mains.
D Laissez les électrodes refroidir avant de les toucher.

OM-715 Page 3

DES ORGANES MOBILES peuvent
provoquer des blessures.

Pendant le soudage, les bras et électrodes se
déplacent.

D Ne pas s’approcher des organes mobiles.
D Ne pas s’approcher des points de coincement.
D Ne placez pas les mains entre les électrodes.
D Maintenez en place les panneaux et protections de sécurité.
D Les applications peuvent nécessiter des protections

supplémentaires d’après les codes de sécurité locales.

D Ne respirez pas les fumées.
D Si vous soudez à l’intérieur, ventilez le local et/ou ayez recours à

une ventilation aspirante installée près de la soudure pour évacuer
les fumées.

D Dans des lieux exigus, utilisez un appareil respiratoire approprié.
D Ne pas s ouder d es m étaux munis d’un rev êtement, tels que l’acier

galvanisé, plaqué en plomb ou au cadmium à moins que le r evêtement
n’ait été enlevé dans la zone de soudure, que l’endroit soit bien ventilé,
et si néc essaire, en p ortant un respirateur à alimentation d ’air. Les
revêtements et t ous les métaux renfermant ces éléments peuvent
dégager des fumées toxiques en cas de soudage.

D Veuillez lire les consignes de sécurité et les instructions du

fabricant pour les métaux, revêtements et produits de nettoyage.

LES FUMÉES peuvent être
dangereuses.

Lors du soudage, les revêtements, produits de net­toyage, peintures et placages peuvent dégager des
fumées. Leur inhalation peut être dangereuse.

1-3. Dangers supplémentaires en relation avec l’installation, le fonctionnement et la

maintenance

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 ni faire fonctionner l’appareil à

proximité de substances inflammables.

D Ne pas surcharger l’installation électrique – s’assurer que

l’alimentation est correctement dimensionnée et protégée avant
de mettre l’appareil en service.

LA CHUTE DE L’ÉQUIPEMENT peut
blesser.

D Utiliser un engin d’une capacité appropriée

pour soulever l’appareil.

D Faites déplacer les équipements portables par

deux personnes dotées d’une force suffisante.

D Durant le transport, immobilisez l’appareil pour éviter qu’il ne

bascule.

DES PIÈCES DE MÉTAL ou DES
SALETÉS peuvent provoquer des
blessures aux yeux.

D Porter des lunettes de sécurité à coques latéra-

les ou un écran facial.

1-4. Principales normes de sécurité

Safety in Welding and Cutting, norme ANSI Z49.1, de l’American Weld-
ing 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.
National Electrical Code, NFPA Standard 70, de la National Fire Protec-

tion Association, Batterymarch Park, Quincy, MA 02269.

LES CHAMPS MAGNÉTIQUES peuvent
affecter les stimulateurs cardiaques.

D Porteurs de stimulateur cardiaque, restez à

distance.

D Les porteurs d’un stimulateur cardiaque doi-

vent d’abord consulter leur médecin avant de
s’approcher des opérations de soudage par
points.

L’EMPLOI EXCESSIF peut
SURCHAUFFER L’ÉQUIPEMENT.

D Prévoir une période de refroidissement;

respecter le cycle opératoire nominal.

D Réduire l e facteur de marche avant de poursui-

vre le soudage.

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 York, NY 10018.
Cutting and Welding Processes, norme NFPA 51B, de la National Fire

Protection Association, Batterymarch Park, Quincy, MA 02269.

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 (W ashington DC : U.S. Government

Printing Of fice, mai 1989), publié par le Office of Technology Assess-
ment 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

OM-715 Page 4

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, ni
d’offrir des conseils sur les mesures à prendre pour réduire sinon élimin­er les risques éventuels». (Traduction libre)

SECTION 2 – INTRODUCTION

NOTE

Unless otherwise noted, the T models (models with a timer in a control box) are
shown throughout this manual. When information does not apply to both models,
the applicable model is specified.

2-1. Specifications

AC Input

Voltage

Model

Voltage

50/60 Hz

1-Phase

HSW 15T

HSW 15, RSP 110

HSW 25T

HSW 25 ,RSP 220

*Based on 10 second time period; means unit can weld for 5 seconds out of each 10 second time period.

110

220

Model

Tong Length

Input Volts

Output Amps ±10%

Work Capacity

Combined

Combined
Thickness

Mild Steel

1/8 in

(3.2 mm)

3/16 in

(4.7 mm)

HSW 15T, HSW 15, RSP 110 HSW 25T, HSW 25, RSP 220

6 in

(152 mm)

5500 4500 3600 6750 5800 4850

Rated

Output At

Output At
50% Duty

Cycle*

1.5 kVA

2.5 kVA

12 in

(305 mm)

110 220

Welder Dimensions Weight

Height Width Length T Models Non-T

6 in

(152 mm)

6 in

(152 mm)

18 in

(457 mm)

4-1/2 in

(114 mm)

4-1/2 in

(114 mm)

6 in

(152 mm)

13 in

(330 mm)

16 in

(406 mm)

(15.4 kg)

(19.1 kg)

12 in

(305 mm)

34 lb

42 lb

22 lb

(10 kg)

30 lb

(14 kg)

18 in

(457 mm)

SECTION 3 – INSTALLATION

3-1. Installing Or Dressing Tips

A. Installing Tips

Tools Needed:

3/16 in

9/16 in

1 Threaded Tip
2 Tip With Hexhead Screw
3 Tong
Coat threads with supplied heat

sink compound and install tip onto
tong. Do n o t o v ertighten.

1

3

2

OR

3

Ref. ST-800 155-B / Ref. ST-800 154

OM-715 Page 5

B. Dressing The Tips

d = <1/8 in (3.2 mm)

diameter

for 1.5 kVA models;

5/32 in (4 mm)

for 2.5 kVA models

1

1 New Tip
2 Used Tip Requiring Dressing
3 Dressing Method – Keep top

diameter same as a new tip.

Tools Needed:

3d d

2

OR

OM-715 Page 6

3-2. Installing Or Cleaning Tongs

5

4

2

7

1

Y Turn off and unplug welder.

. Be sure tong ends are clean

and not corroded before
installing. Clean tongs with fine
steel wool.

Bottom Tong:

1 Bottom Tong
2 Hole In Spatter Guard
3 Bottom Tong Securing Screws

(4)

Loosen the four screws. If needed,
use a rubber mallet to loosen tong.

Slide tong into bottom tong holder

6

3

as far as possible, and position so
that tip is pointing straight up.

Loosely tighten screws.

Top Tong:

4 Top Tong
5 Top Tong Holder/Pivot Casting
6 Top Tong Securing Screws (4)
Loosen the four screws. If needed

for removal, use a rubber mallet to
loosen tong.

Slide tong into pivot casting as far
as necessary, s o that tip mates with
bottom tip when tongs are closed.

Loosely tighten screws.
7 Tips
Adjust tong positions to line up cen-

ters of tips as shown. Tighten
screws.

Tools Needed:

3/16 in

9/16 in

Tong Alignment

4

7

1

Front View Side View

Fine
Steel
Wool

4

7

1

ST-800 155-A / Ref. ST-800 154-A

OM-715 Page 7

3-3. Adjusting Tong And Hand Lever Pressure

2

1

3

5

4

6

Tools Needed:

9/16, 11/16 in

Y Turn off and unplug welder.
Y Excessive tong pressure can dam-

age tips. Do not use tongs as a clamp
or vice to hold workpiece together. If
the two pieces of material to be
welded do not make good contact at
the point of the intended weld, clamp
material to provide good contact be­tween surfaces.

. Tong pressure is adjustable, and must

be checked and/or set before operation.
Correct tong pressure is necessary to
create a quality weld and to prevent
damage to tips.
Too much tong pressure causes the
weld nugget to dimple and material to

7

splash out around the nugget area.
If tong pressure is too weak, parts are
loose when the tongs close, severe arc­ing occurs between workpieces, and no
weld can be made.

1 Front Nut
2 Rear Nut
3 Pivot Casting
4 Hand Lever
5 Tongs
To increase tong pressure, loosen front nut.

The farther the front nut is turned out, the
greater the pressure on the tips when the
hand lever is closed. T urn the rear nut up to
the pivot casting to lock the position.

Ref. ST-800 156

To decrease tong pressure, loosen the rear
nut and turn the front nut up to the pivot cast­ing.

6 Machine Screw
The farther down the screw is turned, the far-

ther the hand lever will close. Adjustment of
this screw will determine if the tongs lock on
the material, or just pull up tight. Adjust screw
to allow lever to be raised easily after the
weld has b een completed.

7 Hex Nut
To adjust pressure needed to push down

hand lever, turn the hex nuts located on each
side of the pivot casting.

OM-715 Page 8

3-4. Installing Handle

1

2

3

HSW 15 And 15T Models

HSW 25 And 25T Models

2

1

Tools Needed:

7/16, 3/8 in

Y Turn off and unplug welder.

1 Wodden Handle
2 Handle Bolt
3 Brackets (15, 15T Models Only)

1

2

Ref. ST-802 056-A

Install handle onto the spot welder as shown
above. For 25 and 25T Models, install han­dle onto either side as desired for either right­hand or left-hand use.

OM-715 Page 9

3-5. Mounting Control Box (T Models Only)

1

OR

Push-in slots are provided on rear
of box for wall mounting if desired.
The slots will fit over 1/4 inch hex­head screws. To mount box, pro­ceed as follows:

1 Control Box
2 Push-In Slots (Not Shown)
Use slots as template and install

screws at desired locations leaving

2

1/8 inch stickout.
Push rear slots firmly against screw

heads, and slide box down onto
screws.

3-6. Connecting Input Power (T Models)

1

5

4

3

OR

2

ST-800 233-A

Operate spot welder from a sepa­rately fused or circuit breaker pro­tected circuit, and use correct size
input conductors.

1 Rating Label (Not Visible As

Shown On Spot Welder)
2 Cord
3 Parallel Plug On 110 Volts AC

Models

1

4 Tandem Plug On 220 Volts

AC Models
Do not cut ground terminal off plug.
5 Grounded Receptacle
Connect plug to matching

grounded receptacle.

1.5 kVA 110 Volt

2.5 kVA 220 Volt

OM-715 Page 10

Model

Input Conductor

Size (AWG)

No. 10
No. 10

Fuse/Circuit Breaker

Size In Amperes

30
30

ST-800 233-A

3-7. Connecting Input Power (Non-T Models)

Or

12

Y Input power supply wiring

and receptacle must meet

National E l e c t r i c a l C o d e a n d

all other code requirements.

Operate spot welder from a sepa­rately fused or circuit breaker pro­tected circuit, and use correct size

3

4

5

input conductors.
1 Rating Label
2 Cord
3 Parallel Plug On 110 Volts AC

Models
4 Tandem Plug On 220 Volts

AC Models
Do not cut ground terminal off plug.
5 Grounded Receptacle
Connect plug to matching

grounded receptacle.

Model

1.5 kVA 110 Volt

2.5 kVA 220 Volt

Input Conductor

Size (AWG)

No. 10
No. 10

Fuse/Circuit Breaker

Size In Amperes

30
30

Ref. ST-800 156

OM-715 Page 11

4-1. Controls (T Models)

4

SECTION 4 – OPERATION

1

2

1 Spot Weld Timer And Pilot

Light
Weld time adjusts from 0 to 5

seconds. The pilot light turns on
when the weld cycle begins and of f
when the cycle ends.

2 Hand Lever
Use lever to open and close tongs.

Close the hand lever during the
welding process to compress the
material between the tips. T o adjust
tong pressure, see Section 3-3.

3 Start Switch
Move start switch sideways in ei-

ther direction to start weld cycle.
When weld cycle time ends, or the
start switch is released, weld output
stops, and the timer resets for
another weld cycle.

4 Power Switch

4-2. Controls (Non-T Models)

3

ST-146 013-B

1 Hand Lever
Use lever to open and close tongs.

Close the hand lever during the
welding process to compress the
material between the tips. T o adjust
tong pressure, see Section 3-3.

2 Start Switch
Use switch to turn weld current On

and Off. Move switch sideways in
either direction to start weld current.

1

Release switch to stop weld cur­rent.

OM-715 Page 12

2

ST-145 104-A

SECTION 5 – MAINTENANCE AND TROUBLESHOOTING

5-1. Routine Maintenance

Y Disconnect power before maintaining.

Every Use 3 Months 6 Months

Blow Off

Or

Vacuum

Unit

Inspect

Tips

Replace

Unreadable

Labels

5-2. Overload Protection For 220 Volts T Models

OR

During Heavy Service,

Clean Monthly

Y Turn Off unit and disconnect

input power.

If fuse opens, unit shuts down. To
replace fuse, proceed as follows:

1 Fuse Holder Cover
2 Fuse F1 (See Parts List)

1

2

5-3. Troubleshooting

Trouble Remedy

No weld output. Check line fuses, and replace if necessary.

For 220 V T models, check fuse F1, and replace if necessary (see Section 5-2).

Low weld output. Dress or replace tips (see Section 3-1).

Check tip threads. Replace tips if necessary (see Section 3-1).

Ref. ST-800 233-A / Ref. ST-800 185-A

Remove and clean tongs (see Section 3-2).

OM-715 Page 13

Trouble Remedy

Clean ends of tongs and tong holders (see Section 3-2).
Check power switch (T Models only) and/or start switch. Replace if necessary.

Longer than normal weld time required. Dress or replace tips (see Section 3-1).

Clean workpieces.
Adjust tong pressure (see Section 3-3).
Clean ends of tongs and tong holders (see Section 3-2).
Check input line voltage.

Burn through at point of weld. Shorten weld time (see Section 4-1).

Adjust tong pressure (see Section 3-3).
Dress or replace tips (see Section 3-1).
Realign tips (see Section 3-2).

OM-715 Page 14

SECTION 6 – ELECTRICAL DIAGRAMS

Figure 6-1. Circuit Diagram For 110 Volts T Models

SA-162 466-B

Figure 6-2. Circuit Diagram For 220 Volts T Models

SA-072 065-B

OM-715 Page 15

Figure 6-3. Circuit Diagram For 110 And 220 Volts Non-T Models

SA-162 467-B

OM-715 Page 16

Notes

OM-715 Page 17

. Hardware i s common and

not available unless listed.

SECTION 7 – PARTS LIST

11

10

3

17

18

10

7

6

5

4

3

2

1

46

45

43

41

42

40

39

9

8

31

30

32

37

36

38–Fig 6–2

29

35

16

15

13

12

33

34

28

14

27

20

21

3

22

25

26

19

23

17

19

24

44

OM-715 Page 18

ST-145 048-C

Figure 7-1. Main Assembly

Quantity

Item

No.

Dia.

Mkgs.

Part

No.

Description

15,15T, 110

Model

25,25T, 220

Figure 7-1. Main Assembly

1 019 643 HANDLE, carrying 1. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .

1 019 646 HANDLE, carrying 1. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .

2 601 865 NUT, stl hex full fnsh .250-20 1 1. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .

3 602 009 SCREW, cap stl sch .250-20 x 1.250 7 7. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .

4 023 660 WIRING HARNESS, switch 1 1. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .

5 023 199 LEVER, operating 1. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .

5 082 090 LEVER, operating 1. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .

6 010 714 PIN, spring CS .312 x 1.750 1 1. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .

7 010 712 LINK, tgl connecting 2 2. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .

8 010 713 PIN, spring CS .312 x 1.250 1 1. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .

9 010 715 BOLT, pressure adjustment 1 1. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .

10 601 876 NUT, stl hex jam .437-20 2 2. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .

11 010 668 SCREW, cap stl sch .250-20 x 1.500 2 3. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .

12 017 668 HOLDER, tong top 1 1. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .

13 010 709 CLAMP, tong top 1 1. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .

14 010 623 BRAID, tong set of four 1 1. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .

15 010 716 CLAMP, connecting top tong braid 1 1. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .

16 602 008 SCREW, .250-20 x 1.000soc hexhd 4 4. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .

17 602 262 HANDLE, wood 1 1. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .

18 024 130 BRACKET, mtg handle 2. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .

19 601 778 BOLT, crg stl .250-20 x 4.500 1 1. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .

20 601 854 NUT, al hex .375-24 2 2. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .

21 095 297 STUD, stl .375-24 x 3.750 1 1. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .

22 026 607 GUARD, spatter 1 1. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .

23 122 210 SCREW, 10-32 x .625hexwhd slt stl 4 4. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .

24 070 017 INSULATION, switch 1 1. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .

25 S1/PB1 *011 746 SWITCH, control (consisting of) 1 1. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .

011 291 CONTACT, assembly switch 1 1. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .

023 987 CONTACT, switch 1 1. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .

011 292 TOGGLE, switch 1 1. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .

070 035 BASE 1 1. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .

26 122 210 SCREW, 10-32 x .625 hexwhd slt stl 2 2. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .

27 026 759 INSULATOR, plug sec scr 2 2. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .

28 010 711 PIN, spring .375-3.00 1 1. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .

29 169 122 HOUSING, front 1 1. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .

30 NAMEPLATE (order by model and serial number) 1 1. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .

31 602 024 SCREW, drive U 2 x 3/16 4 4. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .

32 010 708 RETAINER, clamp tong 1 1. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .

33 026 605 INSULATION, bottom clamp 1 1. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .

34 181 179 INSULATOR, tong 1 1. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .

35 602 004 SCREW, cap stl sch .250-20 x .750 2 2. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .

36 010 707 CLAMP, bottom tong 1 1. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .

37 039 052 CLAMP, threaded connecting tong braid. . . . . . . . . . . . . . . . . .

(included w/Item 5, Fig 7-2) 1 1. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .

38 T1 +095 345 TRANSFORMER, pwr main (Fig 7-2) 1. . . . . . . . . . . . . . . . . . . . . . . . . . . . .

38 T1 +095 354 TRANSFORMER, pwr main (Fig 7-2) 1. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .

143 140 LABEL, warning general precautionary 1 1. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .

39 600 675 SPLICE, butt 16-14 wire 1 1. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .

40 111 630 SCREW, 10-32 x .250hexwhd slt stl 1 1. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .

41 019 642 COVER 1 1. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .

42 601 847 NUT, stl slflkg hex mscr 10-32 4 4. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .

43 134 900 STRAIN RELIEF, cable flexible .270-.480 cable 1 1. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .

44 094 503 CABLE, pwr 10ft 16ga 3/C (Models w/out Timer) 1. . . . . . . . . . . . . . . . . . . . . . . .

44 094 504 CABLE, pwr 10ft 16ga 3/C (Models w/out Timer) 1. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .

45 026 763 TUBING, gl acrylic No. 7 x 2.500 3 3. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .

46 128 237 SCREW, 10-32 x .500hexwhd slt stl 2 2. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .

*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.

OM-715 Page 19

Item

No.

Part

No.

Replace Coils At Factory Or Factory Authorized Service Station

Description

15,15T, 110

Quantity

Model

25,25T, 220

Figure 7-2. Transformer, Power Main (Fig 7-1 Item 37)

095 345

095 354

1 026 601 INSULATION 1. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .

1 026 602 INSULATION 1. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .

2 095 312 COIL, pri 110V 1. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .

2 095 308 COIL, pri 220V 1. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .

3 010 157 STUD, stl No. 10-32 x 8.125 4. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .

3 010 156 STUD, stl No. 10-32 x 11.125 4. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .

4 137 943 NUT, core stud 4 4. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .

5 +039 054 BAR, sec 1. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .

5 +03 9 053 BAR, sec 1. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .

1

2

3

4

5

. Hardware i s common and

not available unless listed.

ST-141 482-A

Figure 7-2. Transformer, Power Main

+Item 36 on Figure 7-1 is included when ordering these items as replacement parts.

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-715 Page 20

Item

No.

Dia.

Mkgs.

Part

No.

Description

Quantity

Model

15T 25T

Figure 7-3. Timer, Spot (220V Illustrated)

041 081 041 082

1 NAMEPLATE, (order by model and style numbers) 1 1. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .

2 S1 124 511 SWITCH, tgl DPST 40A 600VAC 1 1. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .

3 W 194 307 CONTACTOR, 40A 3P (consisting of) 1 1. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .

188 210 LINK, connecting contactor terminal 2 2. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .

4 032 152 CABINET 1 1. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .

5 T2 605 856 TRANSFORMER, control 230/460 1. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .

6 168 308 PANEL, front 1 1. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .

7 TD1 605 952 TIMER, delay reset 5sec 120V 1 1. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .

8 046 432 HOLDER, fuse 1. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .

9 F1 *012 653 FUSE, mintr gl .5A 1. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .

10 087 179 CABLE, interconnecting 10ft 1 1. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .

11 PLG1 096 822 CABLE, pwr 10ft 16ga 3/c 1. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .

11 PLG1 096 481 CABLE, pwr 10ft 16ga 3/c 1. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .

12 134 900 STRAIN RELIEF, cable flexible .270-.480 cable 2 2. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .

3

4

. Hardware i s common and

not available unless listed.

2

1

12

11

5

6

10

9

8

7

ST-146 012-E

Figure 7-3. Timer, Spot (220V Illustrated)

*Recommended Spare Parts.

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-715 Page 21

Chart 7-1. Spot Welder Tongs And Tips

3-1/2”

(89 mm)

STANDARD

3-1/2”

(89 mm)

MO OFFSET

6-1/2” (165 mm)

TT-6

9-1/2”

(241 mm)

TT-9

6” (152 mm) 205 551
12” (305 mm) 040 198
18” (457 mm) 040 199

6” (152 mm) 205 554
12” (305 mm) 205 555
18” (457 mm) 205 556

12” (305 mm) 205 558
18” (457 mm) 205 559

12” (305 mm) 205 560
18” (457 mm) 205 561

Standard Flat

205 552 205 553

MO

Offset

205 557

Standard Flat

205 552 205 553

Standard

205 552 205 553

Flat

7-1/2”

(190 mm)

G-7

FF

FH

8” (203 mm) 205 562

8” (203 mm) 205 563

5” (127 mm) 205 565

Standard

205 552 205 553

FF

FH

Flat

205 564

205 566

S-0550 / Ref

OM-715 Page 22

Notes

OPTIONS AND ACCESSORIES

SWP-2 SPOT WELDER
PEDESTAL

(#205 567)

Leaves hands free to handle the
work. When foot control is
depressed, tongs close and Start
Switch is activated.

SPOT WELD TIMER

(#205 569) HSW 15
(#205 570) HSW 25

Cannot be used on “T” model
units. Provides 0–5 second
mechanical weld timer.

GYRO BAIL

(#205 568)

Supports weight of welder.
Operates with boom and
counterweight or from
spring-loaded cable. Spot welds in
any position.

9/93

Warranty Questions?

Call
1-877-HOBART1
for your local
Hobart distributor.

Service

Y ou always get the fast,
reliable response you
need. Most replacement
parts can be in your
hands in 24 hours.

Support

Need fast answers to the
tough welding questions?
Contact your distributor or
call 1-800-332-3281. The
expertise of the distributor
and Hobart is there to
help you, every step of
the way.

Effective October 1, 1999

5/3/1 WARRANTY applies to all Handler 135 and 175 models, Airforce 250, 250A, and 375

models, and Champion 10,000 models.This warranty also applies to the Beta-Mig 1800, Champ

1435, 2060, 8500 models, Ironman 250, Stickmate models, Tigmate models, and HSW-15 and

HSW-25 spot welder models effective with Serial No. KK200262 and newer.

This limited warranty supersedes all previous Hobart warranties and is exclusive with

Hobart products are serviced by Hobart or Miller Authorized Service Agencies.

LIMITED WARRANTY – Subject to the terms and conditions
below, Hobart/Miller Electric Mfg. Co., Appleton, Wisconsin,
warrants to its original retail purchaser that new Hobart
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 Hobart. 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, Hobart/Miller will
repair or replace any warranted parts or components that fail
due to such defects in material or workmanship. Hobart/Miller
must be notified in writing within thirty (30) days of such defect
or failure, at which time Hobart/Miller will provide instructions
on the warranty claim procedures to be followed.

Hobart/Miller shall honor warranty claims on warranted
equipment listed below in the 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 and Labor

* Original Main Power Rectifiers
* Transformers
* Stabilizers
* Reactors
* Rotors, Stators and Brushes

2. 3 Years — Parts and Labor

* Drive Systems
* PC Boards
* Idle Module
* Solenoid Valves
* Switches and Controls
* Spot Welder Transformer

3. 1 Year — Parts and Labor (90 days for industrial use)

* Motor-Driven Guns
* MIG Guns/TIG Torches
* Relays
* Contactors
* Regulators
* Water Coolant Systems
* HF Units
* Running Gear/Trailers
* Plasma Cutting Torches
* Remote Controls
* Replacement Parts (No labor)
* Accessories
* Field Options

(NOTE: Field options are covered for the
remaining warranty period of the product they are
installed in, or for a minimum of one year —
whichever is greater.)

4. Engines, batteries and tires are warranted separately by
the manufacturer.

no other guarantees or warranties expressed or implied.

Hobart’s 5/3/1 Limited Warranty shall not apply to:

1. Consumable components such as contact tips,

cutting nozzles, slip rings, drive rolls, gas diffusers,
plasma torch tips and electrodes, weld cables, and
tongs and tips, or parts that fail due to normal wear.

2. Items furnished by Hobart/Miller, but manufactured by
others, such as engines or trade accessories. These
items are cov ered by the manufacturer’s warranty, if any.

3. Equipment that has been modified by any party other
than Hobart/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 o f
the specifications for the equipment.

HOBART 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 Hobart’s/Miller’s option: (1)
repair; or (2) replacement; or, where authorized in writing by
Hobart/Miller in appropriate cases, (3) the reasonable cost of
repair or replacement at an authorized Hobart/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. Hobart’s/Miller’s
option of repair or replacement will be F.O.B., Factory at
Appleton, Wisconsin, or F.O.B. at a Hobart/Miller authorized
service facility as determined by Hobart/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 HOBART/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,
OPERATION OF LAW, 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 HOBART/MILLER IS
EXCLUDED AND DISCLAIMED BY Hobart/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.

hobart retail 4/00

Owner’s Record

Please complete and retain with your personal records.

Model Name Serial/Style Number

Purchase Date (Date which equipment was delivered to original customer.)

Distributor

Address

City

State Zip

Resources Available

Always provide Model Name and Serial/Style Number.

To locate a Distributor,
retail or service location:

Call 1-877-Hobart1 or visit our website at
www.HobartWelders.com

For technical assistance:

Call 1-800-332-3281

Contact the Delivering Carrier for:

For assistance in filing or settling claims,
contact your distributor and/or equipment
manufacturer’s Transportation Department.

Contact your Distributor for:

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.

Hobart Welding Products

An Ill inoi s Tool Works Company
600 West Main Street
Troy, OH 45373 USA

For Technical Assistance:

Call1-800-332-3281
For Literature Or Nearest Dealer:
Call 1-877-Hobart1

PRINTED IN USA  2000 Hobart Welding Products. 1/00