Lincoln Electric IM422 User Manual

PLASMA CUTTING POWER SOURCE - for Single Phase Input - Code Numbers 9628-1 & -2 only

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Safety Depends on You

Lincoln plasma 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. And,

most importantly, think before you
act and be careful.

PRO - CUT

™

IM422-A

October, 1995

40

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

OPERATOR’S MANUAL

Sales and Service through Subsidiaries and Distributors Worldwide

22801 St. Clair Ave. Cleveland, Ohio 44117-1199 U.S.A. Tel. [phone]

WARNING

PLASMA CUTTING or GOUGING 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.

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

ELECTRIC SHOCK can
kill.

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

1.b. When the power source is operating voltages in excess of
250 volts are produced. This creates the potential for serious
electrical shock - potentially even fatal.

1.c. Insulate yourself from work and ground using dry insulation.
When cutting or gouging in damp locations, on metal frame­work such as floors, gratings or scaffolds and when in posi­tions such as sitting or lying, make certain the insulation is
large enough to cover your full area of physical contact with
work and ground.

1.d. Always be sure the work cable makes a good electrical con­nection with the metal being cut or gouged. The connection
should be as close as possible to the area being cut or
gouged.

1.e. Ground the work or metal to be cut or gouged to a good elec­trical (earth) ground.

1.f. Maintain the plasma torch, cable and work clamp in good,
safe operating condition. Replace damaged insulation.

1.g. Never dip the torch in water for cooling or plasma cut or
gouge in or under water.

1.h. When working above floor level, protect yourself from a fall
should you get a shock.

1.i. Operate the pilot arc with caution. The pilot arc is capable of
burning the operator, others or even piercing safety clothing.

1.j. Also see Items 4c and 6.

ARC RAYS can burn.

2.a. Use safety glasses and a shield with the prop­er filter and cover plates to protect your eyes
from sparks and the rays of the arc when per­forming or observing plasma arc cutting or
gouging. Glasses,headshield and filter lens
should conform to ANSI Z87. I standards.

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

2.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.

3.a. Plasma cutting or gouging may produce
fumes and gases hazardous to health.
Avoid breathing these fumes and
gases.When cutting or gouging, keep your
head out of the fumes. Use enough ventila-

tion and/or exhaust at the arc to keep fumes and gases
away from the breathing zone. When cutting or gouging

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.b. Do not use plasma arc cutting or gouging in locations near
chlorinated hydrocarbon vapors coming from degreasing,
cleaning or spraying operations. The heat and rays of the arc
can react with solvent vapors to form phosgene, a highly
toxic gas, and other irritating products.

3.c. Gases used for plasma cutting and gouging can displace air
and cause injury or death. Always use enough ventilation,
especially in confined areas, to insure breathing air is safe.

3.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.

CUTTING SPARKS can
cause fire or explosion.

4.a..Remove fire hazards from the plasma cut­ting or gouging area. If this is not possible,
cover them to prevent the cutting or gouging
sparks from starting a fire. Remember that

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

4.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.

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

4.d. Do not cut or gouge 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 though they have been
“cleaned.” For information purchase “Recommended Safe
Practices for the Preparation for Welding and Cutting of
Containers and Piping That Have Held Hazardous
Substances”, AWS F4.1 from the American Welding Society
(see address above).

Apr. ‘93

4.e. Vent hollow castings or containers before heating, cutting or
gouging. They may explode.

4.f. Do nor fuel engine driven equipment near area where plasma
cutting or gouging.

– 2 –

4.g. Sparks and spatter are thrown from the plasma arc. Wear
safety glasses, ear protection and oil free protective garments
such as leather gloves, heavy shirt, cuffless trousers, high
shoes and a cap over your hair. Wear ear plugs when cutting
or gouging out of position or in confined places. Always wear
safety glasses with side shields when in a cutting or gouging
area.

4.h. Connect the work cable to the work as close to the cutting or
gouging area as practical. Work cables connected to the build­ing framework or other locations away from the cutting or
gouging area increase the possibility of the 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.

CYLINDER may explode
if damaged.

5.a. Use only compressed gas cylinders contain­ing the correct 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.

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

5.c. Cylinders should be located:

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

physical damage.

• A safe distance from plasma cutting or gouging, arc weld-

ing operations and any other source of heat, sparks,
or flame.

5.d. Never allow any part of the electrode, torch or any other
electrically “hot” parts to touch a cylinder.

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

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

5.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.

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

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

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

PLASMA ARC can injure.

7.a. Keep your body away from nozzle and
plasma arc.

7.b. Operate the pilot arc with caution. The pilot arc is capable of
burning the operator, others or even piercing safety clothing.

ELECTRIC AND MA GNETIC FIELDS
may be dangerous

8.a. Electric current flowing through any con­ductor causes localized Electric and
Magnetic Fields (EMF). Cutting or gouging
current creates EMF fields around torch
cables and cutting machines.

8.b. EMF fields may interfere with some pacemakers, so opera­tors having a pacemaker should consult their physician
before cutting or gouging.

8.c. Exposure to EMF fields during cutting or gouging may have
other health effects which are now not known.

8d. All operators should use the following procedures in order to

minimize exposure to EMF fields from the cutting or gouging
circuit:

8.d.1. Route the torch and work cables together - Secure
them with tape when possible.

8.d.2. Never coil the torch cable around your body.

8.d.3. Do not place your body between the torch and
work cables. If the torch cable is on your right side,
the work cable should also be on your right side.

8.d.4. Connect the work cable to the workpiece as close as
possible to the area being cut or gouged.

8.d.5. Do not work next to cutting power source.

– 3 –

Apr. ‘93

PRÉCAUTIONS DE SÛRETÉ

zones où l’on pique le laitier.

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.

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.

– 4 –

Mar. ‘93

TABLE OF CONTENTS

Page

Safety Precautions.............................................................................................................2-4

Introductory Information.......................................................................................................6

Product Description..............................................................................................................7

Preheat Temperature for Plasma Cutting............................................................................7

User Responsibility..............................................................................................................7

Specifications.......................................................................................................................7

Installation..........................................................................................................................8-1

Safety Precautions ........................................................................................................8

Location.........................................................................................................................8

High Frequency Interference Protection........................................................................8

Electrical Input Connection............................................................................................9

Electrical Installation for PRO-CUT 40....................................................................9

Capacitor Discharge Procedure..............................................................................9

Input Voltage Setup ................................................................................................9

Power Cord Connection..........................................................................................9

Air Input Connections.............................................................................................10

Output Connections......................................................................................................10

Torch Connection...................................................................................................10

Operating Instructions.........................................................................................................10

Sequence of events......................................................................................................10

Pilot Arc Discussion......................................................................................................11

Procedure Recommendations......................................................................................11

General ..................................................................................................................11

Thin Gauge Sheet Metal........................................................................................11

Expanded Metal.....................................................................................................11

Thick Sections of Metal..........................................................................................12

In All Cases............................................................................................................12

Suggestions for Extra Utility from the PRO-CUT System.............................................12

Maintenance Procedures....................................................................................................13

Routine Maintenance....................................................................................................13

Periodic Maintenance...................................................................................................13

Troubleshooting Procedures...............................................................................................14

Troubleshooting Guide.................................................................................................14

Troubleshooting Steps ........................................................................................15-18

Troubleshooting Tests.........................................................................................19-22

Switch P.C. Board Repairs .................................................................................................23

Switch P.C. Board Replacement Procedures...............................................................23

Replacement of Power Modules and Out put Diodes...................................................23

Environmental Protection .............................................................................................24

PRO-CUT 40 Status Lights Operating Modes....................................................................24

Procedure for Replacing P.C. Boards.................................................................................25

Wiring Diagram PRO-CUT 40.............................................................................................26

Parts Lists......................................................................................................................Appendix

PRO-CUT 40 Torch and Cable Figure 1 .......................................................................Appendix

– 5 –

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.

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.

– 6 –

PRODUCT DESCRIPTION

The PRO-CUT™ 40 is a constant current, continuous
control plasma cutting system. The machine is invert­er based for portability, and is one of the most sophis­ticated on the market. It provides excellent starting
characteristics, cutting visibility and arc stability. The
torch has a patented safety mechanism which
ensures that the consumables are in place before cut­ting can begin. This is extremely important due to the
high voltages involved with the plasma process.

The PRO-CUT 40 comes with an air regulator, coarse
air filter, oil coalescing filter, and pressure gauge. The
system is available with a 25 ft. or a 50 ft. torch cable.
The system is capable of cutting with compressed air
or nitrogen. Nitrogen is typically used to cut aluminum
and other nonferrous metals.

The PRO-CUT is controlled by a microprocessor­based system. The machine performs rudimentary
self troubleshooting when powered up, which aids in
field servicing.

PREHEAT TEMPERATURE FOR
PLASMA CUTTING

hardness control. This is particularly important on
high alloy steels and heat treated aluminum. Job con­ditions, prevailing codes, alloy level, and other consid­erations may also require preheat temperature con­trol. The following minimum preheat temperature is
recommended as a starting point. Higher tempera­tures may be used as required by the job conditions
and/or prevailing codes. If cracking or excessive
hardness occurs on the cut face, higher preheat tem­perature may be required. The recommended mini­mum preheat temperature for plate thickness up to 1/2
inch is 70 (°F).

USER RESPONSIBILITY

Because design, fabrication, erection and cutting vari­ables affect the results obtained in applying this type
of information, the serviceability of a product or struc­ture is the responsibility of the user. Variation such as
plate chemistry, plate surface condition (oil, scale),
plate thickness, preheat, quench, gas type, gas flow
rate and equipment may produce results different than
those expected. Some adjustments to procedures
may be necessary to compensate for unique individ­ual conditions. Test all procedures duplicating actual
field conditions.

Preheat temperature control is recommended for opti­mum mechanical properties, crack resistance and

SPECIFICATIONS

Type K1396-1 (60 Hz) Torch with 25 ft.(7.6 m) Cable

K1396-2 (60 Hz) Torch with 50 ft.(15.2 m) Cable
Input Frequency 60 Hz, 1ø
Output Rating 40 Amps @ 60% Duty Cycle

35 Amps @ 100% Duty Cycle
Pilot Current 8 amps

Pilot Duty Cycle 50% (30 seconds out of 60 seconds)
Current Range 15-40 Amps
Maximum OCV 330
Normal OCV 320
Input Power

Standard Voltages 208/230V
Current 41 Amps/38 Amps @ 60%

34 Amps/32 Amps @ 100%
Idle Current 0.6
Idle Power 140W
Power Factor @ Rated Load 0.64
Net Weight

w/25 ft. (7.6 m) Cable 88 lbs/40 kg
w/50 ft. (15.2 m) Cable 96 lbs/43.4 kg

Dimensions, H x W x D 17.7” x 10.5” x 22.6”

(443 x 267 x 574 mm)

– 7 –

INSTALLATION

SAFETY PRECAUTIONS

● Read the safety precautions at the beginning of

this Operator's Manual before proceeding.

● Only personnel that have read and under-

stood this Operator’s Manual should install and
operate this equipment.

● Machine must be connected to system ground per

any national, local or other applicable electrical
codes.

● The power switch is to be in the “OFF” position

when connecting power cord to input power.

HIGH FREQUENCY INTERFERENCE
PROTECTION

The PRO-CUT 40 employs a solid state high frequen­cy torch starting circuit which drastically reduces high
frequency emissions from the machine compared with
spark gap type high frequency generators.

Radiated interference can develop, however, in the
following four ways:

(1) Direct interference radiated from the machine.

WARNING

TURN THE INPUT POWER OFF USING THE DIS­CONNECT SWITCH AT THE FUSE BOX BEFORE
ATTEMPTING TO CONNECT THE INPUT POWER
LINES.

• Only qualified personnel should perform this installa­tion.

• Turn the power switch on the PRO-CUT 40 “off”
before connecting or disconnecting output cables.

• Connect the PRO-CUT 40 grounding terminal locat­ed on the side of the case back to a good electrical
earth ground.

WARNING

DISCHARGE INPUT CAPACITORS BEFORE

WORKING INSIDE MACHINE.

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

LOCATION

(2) Direct interference radiated from the cutting

leads.

(3) Direct interference radiated from feedback into

the power lines.

(4) Interference from reradiation of “pickup” by

ungrounded metallic objects.

Keeping these contributing factors in mind, installing
equipment per the following instructions should mini­mize problems.

(1) Keep the machine power supply lines as short as

possible.

(2) Keep the work and torch leads as short as possi-

ble and as close together as possible. Lengths
should not exceed 50’ (15.2 m). Tape the leads
together when practical.

(3) Be sure the torch and work cable rubber cover-

ings are free of cuts and cracks that allow high
frequency leakage.

Place the PRO-CUT 40 where clean cooling air can
freely circulate in through the side louvers and out
through the front opening. Dirt, dust or any foreign
material that can be drawn into the machine should be
kept at a minimum. Failure to observe these precau­tions can result in excessive operating temperatures
and nuisance shutdown of the machine. Before plan­ning the installation, read the next section entitled
“High Frequency Interference Protection”.

A source of clean, dry, compressed air or nitrogen
must be supplied to the PRO-CUT 40. Oil in the air is
a severe problem and must be avoided. The supply
pressure must be between 70 and 150 psi (482 and
1032 kPa). The flow rate is approximately 4.7 cfm
(133 l/min.). Failure to observe these precautions
could result in excessive operating temperatures or
damage to the torch.

(4) Keep the torch in good repair and all connections

tight to reduce high frequency leakage.

NOTE:

(5) When the machine is enclosed in a metal build-

Failure to observe these recommended installation
procedures may cause radio or TV interference prob­lems and result in unsatisfactory cutting performance
resulting from lost high frequency power.

– 8 –

The machine frame MUST also be grounded ­see paragraph under “Electrical Input
Connection”. The work terminal ground does
not ground the machine frame.

ing, several good earth driven electrical grounds
around the periphery of the building
are recommended.

ELECTRICAL INPUT CONNECTION

WARNING

ELECTRIC SHOCK can kill.

• Disconnect input power before
proceeding.

• Have a qualified electrician make

the input connections.

• Be sure to discharge capacitors with the
procedure outlined below before working in
that area of equipment.

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

Electrical Installation for PRO-CUT 40

LIFT MYLAR
INSULATION

CAPACITOR
TERMINALS

d. Use a DC voltmeter to check that voltage is not

present across terminals.

e. Replace discharge resistor onto fan baffle.

Input Voltage Setup

208V INPUT

230

208

230V INPUT

230

208

a. The PRO-CUT 40 should be connected only by a qualified

electrician. Installation should be made in accordance with
the U.S. National Electrical Code, all local codes and the
information detailed below.

b. When received directly from the factory, the dual voltage

(208-230) machines are internally connected for the highest
voltage (230) input. If 230 is the desired input, then the

Power Cord Connection

machine may be connected to the power system without
any setup required inside the machine.

c. 208 volt operation requires a voltage panel setup: Remove

roof, discharge input capacitors, and move lead “A” from
“230” to “208” of terminal strip “1”. See following instruc-

A 10-foot power cord is provided and wired into the
machine. Follow the power cord connection instruc­tions. Incorrect connection may result in equipment
damage.

tions.

NOTE: Do not power the PRO-CUT 40 off of the auxiliary power

supply of an engine driven welder. If the voltage peaks
from the engine welder exceed 380V the filter capaci­tors, FETS of other circuity may fail on the PRO-CUT 40.

Capacitor Discharge Procedure

a. Locate discharge resistor (25 ohms 25W)

attached to fan baffle. Resistor has no leads
connected to it.

RESISTOR

A

H1 H3

TERMINAL STRIP 1

A

H1 H3

TERMINAL STRIP 1

BLACK

GREEN

WHITE

FAN BAFFLE

b. Remove resistor from fan baffle.
c. Hold resistor body with electrically insulated

glove. DO NOT TOUCH TERMINALS

.
Carefully lift mylar insulation. Connect resistor
terminals across two hex head cap screws in
position shown. Hold in position for 1 second.
Repeat for capacitor located on opposite side.

Install in accordance with all local and national electric
codes.

RECOMMENDED FUSE SIZES

BASED ON THE U.S. NATIONAL ELECTRICAL CODE

AND MAXIMUM MACHINE OUTPUTS

INPUT VOLTS* FUSE SIZE IN AMPS

(TIME DELAY FUSES)
1 Phase 208 60
60 Hz / 50 Hz 230 60

* Input voltage must not exceed ± 10% of rated value.

– 9 –