Lincoln Electric 350-SA User Manual

350-SA PERKINS

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Diesel Engine Driven DC Arc Welding Power Source

For use with machines having Code Number 10074 or 10074 CV.

Safety Depends on You

Lincoln arc welding and cutting
equipment is designed and built
with safety in mind. However, your
overall safety can be increased by
proper installation ... and
thoughtful operation on your part.

DO NOT INSTALL, OPERATE
OR REPAIR THIS EQUIPMENT
WITHOUT READING THIS
MANUAL AND THE SAFETY
PRECAUTIONS CONTAINED
THROUGHOUT.

importantly, think before you act
and be careful.

And, most

IM519-A

August, 1998

World's Leader in Welding and Cutting Products Premier Manufacturer of Industrial Motors

OPERATOR’S MANUAL

• Sales and Service through Subsidiaries and Distributors Worldwide •

Cleveland, Ohio 44117-1199 U.S.A. TEL: [phone] FAX: [phone] WEB SITE: www.lincolnelectric.com

i

SAFETY

i

WARNING

CALIFORNIA PROPOSITION 65 WARNINGS

Diesel engine exhaust and some of its constituents
are known to the State of California to cause
cancer, birth defects, and other reproductive harm.

The Above For Diesel Engines

ARC WELDING CAN BE HAZARDOUS. PROTECT YOURSELF AND OTHERS FROM POSSIBLE SERIOUS INJURY OR DEATH.
KEEP CHILDREN AWAY. PACEMAKER WEARERS SHOULD CONSULT WITH THEIR DOCTOR BEFORE OPERATING.

Read and understand the following safety highlights. For additional safety information, it is strongly recommended that you
purchase a copy of “Safety in Welding & Cutting - ANSI Standard Z49.1” from the American Welding Society, P.O. Box
351040, Miami, Florida 33135 or CSA Standard W117.2-1974. A Free copy of “Arc Welding Safety” booklet E205 is available
from the Lincoln Electric Company, 22801 St. Clair Avenue, Cleveland, Ohio 44117-1199.

BE SURE THAT ALL INSTALLATION, OPERATION, MAINTENANCE AND REPAIR PROCEDURES ARE
PERFORMED ONLY BY QUALIFIED INDIVIDUALS.

The engine exhaust from this product contains
chemicals known to the State of California to cause
cancer, birth defects, or other reproductive harm.

The Above For Gasoline Engines

FOR ENGINE
powered equipment.

1.a. Turn the engine off before troubleshooting and maintenance
work unless the maintenance work requires it to be running.

____________________________________________________

1.b.Operate engines in open, well-ventilated
areas or vent the engine exhaust fumes
outdoors.

____________________________________________________

1.c. Do not add the fuel near an open flame

welding arc or when the engine is running.
Stop the engine and allow it to cool before
refueling to prevent spilled fuel from
vaporizing on contact with hot engine parts
and igniting. Do not spill fuel when filling
tank. If fuel is spilled, wipe it up and do not
start engine until fumes have been
eliminated.

____________________________________________________

1.d. Keep all equipment safety guards, covers and devices in
position and in good repair.Keep hands, hair, clothing and
tools away from V-belts, gears, fans and all other moving
parts when starting, operating or repairing equipment.

____________________________________________________

1.e. In some cases it may be necessary to remove safety

guards to perform required maintenance. Remove
guards only when necessary and replace them when the
maintenance requiring their removal is complete.
Always use the greatest care when working near moving
parts.

___________________________________________________

1.f. Do not put your hands near the engine fan. Do not attempt

to override the governor or idler by pushing on the throttle
control rods while the engine is running.

1.h. To avoid scalding, do not remove the
radiator pressure cap when the engine is
hot.

ELECTRIC AND
MAGNETIC FIELDS
may be dangerous

2.a. Electric current flowing through any conductor causes
localized Electric and Magnetic Fields (EMF). Welding
current creates EMF fields around welding cables and
welding machines

2.b. EMF fields may interfere with some pacemakers, and
welders having a pacemaker should consult their physician
before welding.

2.c. Exposure to EMF fields in welding may have other health
effects which are now not known.

2.d. All welders should use the following procedures in order to
minimize exposure to EMF fields from the welding circuit:

2.d.1.

Route the electrode and work cables together - Secure
them with tape when possible.

2.d.2. Never coil the electrode lead around your body.

2.d.3. Do not place your body between the electrode and

work cables. If the electrode cable is on your right
side, the work cable should also be on your right side.

2.d.4. Connect the work cable to the workpiece as close as

possible to the area being welded.

2.d.5. Do not work next to welding power source.

Mar ‘95

ii

SAFETY

ii

ELECTRIC SHOCK can
kill.

3.a. The electrode and work (or ground) circuits
are electrically “hot” when the welder is on.
Do not touch these “hot” parts with your bare
skin or wet clothing. Wear dry, hole-free

gloves to insulate hands.

3.b. Insulate yourself from work and ground using dry insulation.
Make certain the insulation is large enough to cover your full
area of physical contact with work and ground.

In addition to the normal safety precautions, if welding
must be performed under electrically hazardous
conditions (in damp locations or while wearing wet
clothing; on metal structures such as floors, gratings or
scaffolds; when in cramped positions such as sitting,
kneeling or lying, if there is a high risk of unavoidable or
accidental contact with the workpiece or ground) use
the following equipment:

• Semiautomatic DC Constant Voltage (Wire) Welder.

• DC Manual (Stick) Welder.

• AC Welder with Reduced Voltage Control.

3.c. In semiautomatic or automatic wire welding, the electrode,
electrode reel, welding head, nozzle or semiautomatic
welding gun are also electrically “hot”.

3.d. Always be sure the work cable makes a good electrical
connection with the metal being welded. The connection
should be as close as possible to the area being welded.

3.e. Ground the work or metal to be welded to a good electrical
(earth) ground.

ARC RAYS can burn.

4.a. Use a shield with the proper filter and cover
plates to protect your eyes from sparks and
the rays of the arc when welding or observing
open arc welding. Headshield and filter lens
should conform to ANSI Z87. I standards.

4.b. Use suitable clothing made from durable flame-resistant
material to protect your skin and that of your helpers from
the arc rays.

4.c. Protect other nearby personnel with suitable, non-flammable
screening and/or warn them not to watch the arc nor expose
themselves to the arc rays or to hot spatter or metal.

FUMES AND GASES
can be dangerous.

5.a. Welding may produce fumes and gases
hazardous to health. Avoid breathing these
fumes and gases.When welding, keep
your head out of the fume. Use enough
ventilation and/or exhaust at the arc to keep

fumes and gases away from the breathing zone. When

welding with electrodes which require special
ventilation such as stainless or hard facing (see
instructions on container or MSDS) or on lead or
cadmium plated steel and other metals or coatings
which produce highly toxic fumes, keep exposure as
low as possible and below Threshold Limit Values (TLV)
using local exhaust or mechanical ventilation. In
confined spaces or in some circumstances, outdoors, a
respirator may be required. Additional precautions are
also required when welding on galvanized steel.

3.f.

Maintain the electrode holder, work clamp, welding cable and
welding machine in good, safe operating condition. Replace
damaged insulation.

3.g. Never dip the electrode in water for cooling.

3.h. Never simultaneously touch electrically “hot” parts of
electrode holders connected to two welders because voltage
between the two can be the total of the open circuit voltage
of both welders.

3.i. When working above floor level, use a safety belt to protect
yourself from a fall should you get a shock.

3.j. Also see Items 6.c. and 8.

5.b.

Do not weld in locations near chlorinated hydrocarbon

coming from degreasing, cleaning or spraying operations.
The heat and rays of the arc can react with solvent vapors
form phosgene, a highly toxic gas, and other irritating
products.

5.c. Shielding gases used for arc welding can displace air and

cause injury or death. Always use enough ventilation,
especially in confined areas, to insure breathing air is safe.

5.d. Read and understand the manufacturer’s instructions for this

equipment and the consumables to be used, including the

material safety data sheet (MSDS) and follow your

employer’s safety practices. MSDS forms are available from

your welding distributor or from the manufacturer.

5.e. Also see item 1.b.

Mar ‘95

vapors

to

iii

SAFETY

iii

WELDING SPARKS can
cause fire or explosion.

6.a.

Remove fire hazards from the welding area.

If this is not possible, cover them to prevent

the welding sparks from starting a fire.

materials from welding can easily go through small cracks
and openings to adjacent areas. Avoid welding near
hydraulic lines. Have a fire extinguisher readily available.

6.b. Where compressed gases are to be used at the job site,
special precautions should be used to prevent hazardous
situations. Refer to “Safety in Welding and Cutting” (ANSI
Standard Z49.1) and the operating information for the
equipment being used.

6.c. When not welding, make certain no part of the electrode
circuit is touching the work or ground. Accidental contact
can cause overheating and create a fire hazard.

6.d. Do not heat, cut or weld tanks, drums or containers until the
proper steps have been taken to insure that such procedures
will not cause flammable or toxic vapors from substances
inside. They can cause an explosion even
been “cleaned”. For information, purchase “Recommended
Safe Practices for the
Containers and Piping That Have Held Hazardous
Substances”, AWS F4.1 from the American Welding Society

(see address above).

6.e. Vent hollow castings or containers before heating, cutting or
welding. They may explode.

Sparks and spatter are thrown from the welding arc. Wear oil

6.f.
free protective garments such as leather gloves, heavy shirt,
cuffless trousers, high shoes and a cap over your hair. Wear
ear plugs when welding out of position or in confined places.
Always wear safety glasses with side shields when in a
welding area.

6.g. Connect the work cable to the work as close to the welding
area as practical. Work cables connected to the building
framework or other locations away from the welding area
increase the possibility of the welding current passing
through lifting chains, crane cables or other alternate
circuits. This can create fire hazards or overheat lifting
chains or cables until they fail.

6.h. Also see item 1.c.

Remember that welding sparks and hot

though

they have

Preparation

for Welding and Cutting of

CYLINDER may explode
if damaged.

7.a. Use only compressed gas cylinders
containing the correct shielding gas for the
process used and properly operating
regulators designed for the gas and

pressure used. All hoses, fittings, etc. should be suitable for
the application and maintained in good condition.

7.b. Always keep cylinders in an upright position securely
chained to an undercarriage or fixed support.

7.c. Cylinders should be located:

• Away from areas where they may be struck or subjected to

physical damage.

• A safe distance from arc welding or cutting operations and

any other source of heat, sparks, or flame.

7.d. Never allow the electrode, electrode holder or any other
electrically “hot” parts to touch a cylinder.

7.e. Keep your head and face away from the cylinder valve outlet
when opening the cylinder valve.

7.f. Valve protection caps should always be in place and hand
tight except when the cylinder is in use or connected for
use.

7.g. Read and follow the instructions on compressed gas
cylinders, associated equipment, and CGA publication P-l,
“Precautions for Safe Handling of Compressed Gases in
Cylinders,” available from the Compressed Gas Association
1235 Jefferson Davis Highway, Arlington, VA 22202.

FOR ELECTRICALLY
powered equipment.

8.a. Turn off input power using the disconnect
switch at the fuse box before working on
the equipment.

8.b. Install equipment in accordance with the U.S. National
Electrical Code, all local codes and the manufacturer’s
recommendations.

8.c. Ground the equipment in accordance with the U.S. National
Electrical Code and the manufacturer’s recommendations.

Mar ‘95

iv

SAFETY

iv

PRÉCAUTIONS DE SÛRETÉ

Pour votre propre protection lire et observer toutes les instructions
et les précautions de sûreté specifiques qui parraissent dans ce
manuel aussi bien que les précautions de sûreté générales
suivantes:

Sûreté Pour Soudage A L’Arc

1. Protegez-vous contre la secousse électrique:

a. Les circuits à l’électrode et à la piéce sont sous tension

quand la machine à souder est en marche. Eviter toujours
tout contact entre les parties sous tension et la peau nue
ou les vétements mouillés. Porter des gants secs et sans
trous pour isoler les mains.

b. Faire trés attention de bien s’isoler de la masse quand on

soude dans des endroits humides, ou sur un plancher
metallique ou des grilles metalliques, principalement dans
les positions assis ou couché pour lesquelles une grande
partie du corps peut être en contact avec la masse.

c. Maintenir le porte-électrode, la pince de masse, le câble

de soudage et la machine à souder en bon et sûr état
defonctionnement.

d.Ne jamais plonger le porte-électrode dans l’eau pour le

refroidir.

e. Ne jamais toucher simultanément les parties sous tension

des porte-électrodes connectés à deux machines à souder
parce que la tension entre les deux pinces peut être le
total de la tension à vide des deux machines.

f. Si on utilise la machine à souder comme une source de

courant pour soudage semi-automatique, ces precautions
pour le porte-électrode s’applicuent aussi au pistolet de
soudage.

zones où l’on pique le laitier.

6. Eloigner les matériaux inflammables ou les recouvrir afin de
prévenir tout risque d’incendie dû aux étincelles.

7. Quand on ne soude pas, poser la pince à une endroit isolé de
la masse. Un court-circuit accidental peut provoquer un
échauffement et un risque d’incendie.

8. S’assurer que la masse est connectée le plus prés possible
de la zone de travail qu’il est pratique de le faire. Si on place
la masse sur la charpente de la construction ou d’autres
endroits éloignés de la zone de travail, on augmente le risque
de voir passer le courant de soudage par les chaines de
levage, câbles de grue, ou autres circuits. Cela peut
provoquer des risques d’incendie ou d’echauffement des
chaines et des câbles jusqu’à ce qu’ils se rompent.

9. Assurer une ventilation suffisante dans la zone de soudage.
Ceci est particuliérement important pour le soudage de tôles
galvanisées plombées, ou cadmiées ou tout autre métal qui
produit des fumeés toxiques.

10. Ne pas souder en présence de vapeurs de chlore provenant
d’opérations de dégraissage, nettoyage ou pistolage. La
chaleur ou les rayons de l’arc peuvent réagir avec les vapeurs
du solvant pour produire du phosgéne (gas fortement toxique)
ou autres produits irritants.

11. Pour obtenir de plus amples renseignements sur la sûreté,
voir le code “Code for safety in welding and cutting” CSA
Standard W 117.2-1974.

2. Dans le cas de travail au dessus du niveau du sol, se protéger
contre les chutes dans le cas ou on recoit un choc. Ne jamais
enrouler le câble-électrode autour de n’importe quelle partie
du corps.

3. Un coup d’arc peut être plus sévère qu’un coup de soliel,
donc:

a. Utiliser un bon masque avec un verre filtrant approprié

ainsi qu’un verre blanc afin de se protéger les yeux du
rayonnement de l’arc et des projections quand on soude
ou quand on regarde l’arc.

b. Porter des vêtements convenables afin de protéger la

peau de soudeur et des aides contre le rayonnement de
l‘arc.

c. Protéger l’autre personnel travaillant à proximité au

soudage à l’aide d’écrans appropriés et non-inflammables.

4. Des gouttes de laitier en fusion sont émises de l’arc de
soudage. Se protéger avec des vêtements de protection libres
de l’huile, tels que les gants en cuir, chemise épaisse,
pantalons sans revers, et chaussures montantes.

5. Toujours porter des lunettes de sécurité dans la zone de
soudage. Utiliser des lunettes avec écrans lateraux dans les

PRÉCAUTIONS DE SÛRETÉ POUR
LES MACHINES À SOUDER À
TRANSFORMATEUR ET À
REDRESSEUR

1. Relier à la terre le chassis du poste conformement au code de
l’électricité et aux recommendations du fabricant. Le dispositif
de montage ou la piece à souder doit être branché à une
bonne mise à la terre.

2. Autant que possible, I’installation et l’entretien du poste seront
effectués par un électricien qualifié.

3. Avant de faires des travaux à l’interieur de poste, la
debrancher à l’interrupteur à la boite de fusibles.

4. Garder tous les couvercles et dispositifs de sûreté à leur
place.

Mar. ‘93

for selecting a QUALITY product by Lincoln Electric. We want you

Thank You

to take pride in operating this Lincoln Electric Company product

••• as much pride as we have in bringing this product to you!

Please Examine Carton and Equipment For Damage Immediately

When this equipment is shipped, title passes to the purchaser upon receipt by the carrier. Consequently, Claims
for material damaged in shipment must be made by the purchaser against the transportation company at the
time the shipment is received.

Please record your equipment identification information below for future reference. This information can be
found on your machine nameplate.

Model Name & Number _____________________________________

Code & Serial Number _____________________________________

Date of Purchase _____________________________________

Whenever you request replacement parts for or information on this equipment always supply the information
you have recorded above.

vv

Read this Operators Manual completely before attempting to use this equipment. Save this manual and keep it

handy for quick reference. Pay particular attention to the safety instructions we have provided for your protection.
The level of seriousness to be applied to each is explained below:

WARNING

This statement appears where the information must be followed exactly to avoid serious personal injury or
loss of life.

CAUTION

This statement appears where the information must be followed to avoid minor personal injury or damage to

this equipment.

TABLE OF CONTENTS

Page

GENERAL DESCRIPTION ..................................................................................................7

DESIGN SUMMARY............................................................................................................7

OPTIONAL FEATURES.......................................................................................................8

SPECIFICATIONS ...............................................................................................................9

PRE-OPERATION INSTALLATION .................................................................................10-11

Safety Precautions .......................................................................................................10

Exhaust Spark Arrester ................................................................................................10

Location/Ventilation ......................................................................................................10

Machine Grounding ......................................................................................................10

Lift Bail..........................................................................................................................10

Trailers .......................................................................................................................10-11

Polarity Control and Cable Sizes..................................................................................11

PRE-OPERATION SERVICE .............................................................................................12

Oil ...............................................................................................................................12

Fuel...............................................................................................................................12

Cooling System ............................................................................................................12

Battery Charging...........................................................................................................12

vi

ENGINE OPERATION ........................................................................................................13

Starting the Perkins D3.152 Engine .............................................................................13

Stopping the Perkins D3.152 Engine............................................................................13

WELDER OPERATION....................................................................................................14-15

Duty Cycle ....................................................................................................................14

Control of Welding Current ...........................................................................................14

Idler Operation..............................................................................................................14

Auxiliary Power.............................................................................................................15

MAINTENANCE ...............................................................................................................15-17

General Instructions for Diesel Engine Welders...........................................................15

Cooling System ............................................................................................................16

Bearings .......................................................................................................................16

Commutator and Brushes.............................................................................................16

Idler Maintenance .........................................................................................................17

Nameplate ....................................................................................................................17

TROUBLESHOOTING .....................................................................................................17-20

Welder Troubleshooting.............................................................................................17-19

Flashing the Fields .......................................................................................................19

Electronic Idler Troubleshooting ...................................................................................20

WIRING DIAGRAM - 350-SA..............................................................................................21

DIMENSION PRINT............................................................................................................22

WELDER PARTS LISTS.............................................................................................P237 Series

GENERAL DESCRIPTION

Auxiliary Power

The 350-SA is a heavy duty engine-driven DC arc
welding power source capable of providing constant
current output for stick welding or DC TIG welding.
With the addition of the optional Wire Feed Module for
K1314-4, the 350-SA will provide constant voltage
output for running the LN-25, LN-23P or LN-7 wire
feeders. The Wire Feed Module is factory-installed on
the K1314-5 350-SA.

The output rating of the 350-SA is 350 amperes at 34*
arc volts at 25% duty cycle. Duty cycle is based on a
ten minute period; thus, the welder can be loaded at
rated output for 2.5 minutes out of every ten minute
period.

* The output rating at 60% duty cycle is

250 amps at 40V.

DESIGN SUMMARY

Control Panel

3.0 kVA of nominal 115/230V, 60 Hz, AC1. (See

Optional Features for Power Plug Kits).

(1)

Output voltage is within ± 10% at all loads up to
rated capacity.

Welder Enclosures

The complete welder is rubber mounted on a rugged
steel base.

The output terminals are placed at the side of the
machine so that they are protected by the door. The
output terminals are labeled (+) and (-).

Remote Control

K924-1 (for K1314-4, -5 only) - (Field Installed).
Provides a receptacle switch and remote control box
with 100 ft cord for fine current and OCV adjustment
at the welding site.

Both the engine and the welder controls are located
on one recessed panel at the exciter end of the
machine. The welder controls consist of a five step
“Current Range Selector” switch and a “Fine Current
Adjustment” rheostat. Each welder is equipped with a
“Start” button and an “Idler Control” switch. The
Perkins diesel uses a “Thermostart” button, and has a
“Stop” control.

On this panel is also mounted an engine temperature
gauge, a battery charging ammeter, an oil pressure
gauge, and the three prong grounded type auxiliary
power receptacle.

Copper Shunt Windings

For long life and dependable operation.

Engine Idler

The 350-SA is equipped with an electric automatic
engine idler. It automatically increases and decreases
engine speed when starting and stopping welder or
using auxiliary power. A built-in time delay permits
changing electrodes before the engine slows to its low
idle speed. The “Idler Control Switch” on the panel
locks the idler in full speed position when desired.

Cranking System

A 12 volt electric starter is standard.

Air Cleaner

Heavy duty two stage dry type.

Muffler

A muffler to reduce engine noise is standard on the
diesel engine units.

Engine Hour Meter

A meter to record the hours of operation.

Diesel Engine Protection

The system shuts the engine down in the event of
sudden low oil pressure or high coolant temperature.

– 7 –

OPTIONAL FEATURES

Accessory Set (K703)

Power Plug Kit (K802C)

• A power plug kit for the auxiliary power receptacles
is available. (Provides a plug for each receptacle).

Includes electrode and work cables, headshield, work
clamp, and electrode holder.

Ether Start Kit (K793) for Perkins Engine

When frequent starting is expected below

-12°C, (10°F) remove the “thermostart” system and
install the optional ether start kit to provide maximum
cold weather starting assistance. Ether starting
should only be used as required since indiscriminate
application will contribute to shortened engine life.

(Available for field installation only).

Hi-Freq™ (K799)

Provides high frequency plus gas valve for DC TIG
welding. (Request Publication E385).

Optional field installed water valve kit available. Order

K844.

Trailer (K769)

Two-wheeled trailer for in-plant and yard towing only.
(For highway use, consult applicable federal, state,
and local laws regarding possible requirements for
brakes, lights, fenders, etc.)

Trailer (K913)

Two-wheeled highway trailer with steel, torsion-bar
axle, 54” (137cm) wheel track. Low sway, low center­of-gravity. Sturdy tread plate platform. Choice of 3
hitches. Add on fender & light package. For highway
use, consult applicable local laws regarding possible
additional requirements.

Order: K913-1 Base Trailer

K913-2 Ball Hitch
K913-3 Lunette Eye Hitch
K913-4 Clevis Pin Hitch

K913-5 Fender & Light Kit

Linc-Thaw™ (L2964-5) Control Unit

Includes meter and fuses to protect welder when
thawing frozen water pipes.

WARNING

Pipe Thawing IS
If not done properly, it can result in fire, explosion,
damage to wiring which may make it unsafe,
damage to pipes, burning up the welder, or other
hazards.

Do not use a welder to thaw pipe before reviewing
Lincoln Bulletin E695.1 (dated October 1987 or later.)

------------------------------------------------------------------------

Mufflers

Mufflers are standard on the 350-SA Perkins.

NOT a CSA approved procedure.

Wire Feed Module (K623-1)

The Wire Feed Module is field-installed on the K1314-4
and factory-installed on the K1314-5 to provide CV
(constant voltage) output for semiautomatic welding.
Output rated at 250 Amps at 35 Volts with a 60% Duty
Cycle and 310 Amps at 32 Volts with a 35% Duty
Cycle.

DIMENSIONS

See dimension Print M8869-24 at the rear of this
manual.

– 8 –