WIA Weldmatic 600 Owner's manual

WELDMATIC

600

MODEL NO. CP6

CAT.

7524/6

6/80

FROM SERIAL NO.

6035

THE INFORMATION CONTAINED IN THE FOLDER

IS

SET OUT TO ENABLE

YOU

TO PROPERLY MAINTAIN YOUR NEW EQUIPMENT AND ENSURE THAT

YOU OBTAIN MAXIMUP4 OPERATING EFFICIENCY.

PLEASE ENSURE THAT THIS FOLDER

IS

KEPT

IN

A SAFE PLACE FOR

READY REFERENCE WHEN REQUIREI?.

WHEN REQUESTING SPARE PARTS, QUOTE THE MODEIi NO. AND SERIAL

NO. OF THE MACHINE AND THE PART NO. OF THE ITEM REQUIRED.

FAILURE TO SUPPLY THIS INFORMATION WILL RESULT

IN

UNNECESSARY

DELAYS

IN

SUPPLYING THE CORRECT PARTS.

WELDING INDUSTRIES OF AUSTRALIA PTY. LTD.

Melbourne

429 4766

Newcastle

61 1668

Sydney

534 2144

Adelaide

352 3022

Brisbane

44 1391

Perth

361 7088

Launceston

31 7004

Darwin

81

6427

&

84 3076

OPERATING

AND

MAINTENANCE

INSTRUCTIONS

-

WELDMATIC

600 (CP6)

-

INTRODUCTION

GENERAL

This manual has been prepared especially

for

use

in

familiar-

izing personnel with the design, installation, operation,

maintenance, and troubleshooting

of

this equipment.

All

inform-

ation presented herein should

be

given careful consideration

to

assure optimum performance

of

this

equipment.

RECEIVING/HANDLING.

Prior

to installing this equipment, clean

all

packing

material

from. around the unit and carefully inspect for any damage that

may have occurred during shipment. Any

claims

for

loses

or

damage that m.ay have occurred in transit

must

be

filed by the

purchaser with Welding Industries

of

Australia Pty. Ltd.

or

authorised agent immediately

(refer

to

EQUIPMENT

WARRANTY

card

enclosed with Operating Instruction Manual).

When requesting irrbbrmation concerning this equipment,

it

is

essential

to

supply

correct

Model identification and machine

serial

number.

SAFETY.

Before

the equipment

is

put into operation, the

SAFETY

PRACTICES

section

at

the

back

of

this manual

MUST

BE

READ

COMPLETELY.

This

will

kelp

avoid

possible injury due

to

misuse or improper

welding applications.

"

CONTENTS

PAGE

NO.

General Description

l

Setting up for Operation

2-3

Welding Operation Instructions

4

Maintenance Instructions

5-6

Welding

Data

-

Table

"C"

7

-

Parts

List

CP6-02 Issue

4

8

-

Assembly Drawing CP6-02

Issue

2

9

Circuit Diagrams

-

CP6-C9 10

Mobile

Kit

Assem.bly

-

Safety

Practices

Guarantee

Card

STANDARD

UNIT

The construction of the standard package plant has been designed

for installation and operating

in

a

wide variety of applications,

such

as high production factories and general fabrication shops.

"WELDMATIC"

Plants consist of three basic

units:-

l,

Constant Potential Rectifier Power Source.

2.

Semi-Automatic Wire Feeder.

3,

Welding

Gun

and Cable Assembly.

Separate operating and maintenance instructions are provided

for the wire feeder and gun cables.

1.

-

POWER

SOURCE

-

FEATURES

The standard

C.P.

rectifier power source

is

housed

in

a

drip-

proof enclosure.

Lifting

lugs

are provided for crane trans-

portation. For

units

with

wheel mounting four solid rubber

tyred wheels are provided: the two front wheels are steerable

permitting easy movement

in

restricted floor space.

A

push

bar

is

provided

on

the

front

of the machine and

a

gas cylinder

carrier

with

a support bracket and chain

at

the rear.

A

110

volt plug socket is located

on

the rear panel

for

connection

of gas preheater when welding

with

C02

gas shield. Located

on

the front panel are

a

coarse voltage selection switch, fine

voltage selection switch, power

ON/OFF

switch, control fuses,

wire feeder

plug

socket and rectifier power outlet sockets.

2.

CONSTRUCTION

The power source

is

a Constant Potential Silicon Diode Rectif-

ier

B.C.

Welder,

with

a three phase transformer and

a

three

phase rectifier bridge. Connected

in

the

output circuit

is

an

inductance

unit

providing the "inductance" or degree of slope

necessary for various welding currents. Cooling

of

the sili-

con diodes, transformer windings and inductance

unit

is by a

single phase axial fan. The power source

is

protected against

fan failure and overheating

by

thermostats mounted on diode

heat sinks.

3.

WELDING

PROCESS

Gas metal arc welding

within

the capacity

of

the power source

can be carried

out

with

tke

following equipment:-

a) Semi-automatic

wire feeder model

W14.

b)

Semi-automatic

wire feeder

with

spot timer

W14-20.

c) "Hobart" spool

gun welding

unit

model

SP9

with

CV2

d)

"Mini-mig" push and

pull

gun

and control.

controller.

4.

WELDING

CAPACITY

Power Source Capacity

is

as follows:-

600

Amps, 42 volts,

100%

duty

cycle.

-1

-2-

5.

SUPPLY

AND

WELDING

CABLES.

Power

Sources

are

suitable for connection

to

a

415 volt 50

Hertz

3

phase supply.

The recommended fuse

size,

primary

cable

size and welding

cable

size

are

as

follows:-

a)

Fuse

-

50

amp.

b)

Primary

Cable

-

4 core 77/0.40

T.R.S.

c)

Welding

Cable

-

998/0.30

T.R.S.

6.

SHIELDING

GASES.

a) Welding

Grade

C02

for

a11

mild

and alloy

steel

welding in

"

thicknesses ranging

from

lmm

upwards.

b)

Argon/C02

or

Argon/Oxygen mixtures

for

all

applications on

low

currents requiring minimum

of

spatter on sheet

steel

and

for

stainless

steel

welding.

c)

Argon/Oxygen and

Argon/C02

mixtures

for

prime

quality

weld-

ing

of

stainless

steel.

d)

Argon (pure)

for

all

aluminium. welding.

7.

§ETTING

UP

UNIT

FOR

OPERATION.

a)

-

General

Assembly

of

Packaqed

Plant

(Refer

Drawing

AM1.16)

The

Rectifier

Welder

is

shipped

with

the

skids

or

wheels

unbol-

ted.

Bolt

on

the

wheel

assemblies

with

the

steerable

(swivel)

wheels nearest the front panel and push

bar.

If

a

"Mini-Boom"

wire

feeder mounting

is

supplied,

locate

the vertical

boom

post

in

the

special

swivel mount

at

the

rear

of

the machine.

Locate

the

Wire

Feeder on the swivel mount, ensuring that the

fibre

thrust washer

is

on the

pivot

pin.

Check

that

the

"Wire

Feeder"

is

free

to swivel in

all

directions.

If

necessary

apply

a

small

am.ount

of

graphite

grease

to

shaft.

b)

Connection

to

Mains Supply.

Note:

This

work

should only

be

done by

a

qualified electrician.

The power source

is

designed

for

connection

to

415 volt,

50

hertz,

3

phase

supply

and

the

supply voltage should

be

ascert-

ained

before

connecting the machine.

Access

to

supply connec-

tion

terminals

in

machine may

be

gained by door in right hand

side

panel.

Use

a

flexible 4

core

primary

cable

for

portable

machines and

clamp

cable

to

ensure that

there

is

no strain on

cable

connections. The

earth

(or

ground) connection (green/

yellow) must

be

securely fastened to

the

'earth'

terminal

on

the machine adjacent

to

the supply connection terminals.

CAUTION

Before

inserting primary

cable

plug in mains supply

socket:

ensure that

switch

on

both

plug

socket

and welding

machine

is

in

'OFF'

position.

-

3-

c)

"

CONNECTION

OF

CABLES/HOSES,

ETC.

With unit switched

'OFF'

connect control

cable

(6

pin plug)

from

power

source to

wire

feeder.

Connect

gas

hose from

wire

feeder

to

gas

regulator/flowmeter, ensuring

all

connections

are

tightened firmly.

If

C02

Gas

Shield

is

being used, plug

heater

into

110

volt

socket

at

rear of

unit.

cable

into

socket

of

wire

feeder

output guide and retain in place

with

set

screw

provided.

Set

screw

should not

be

tightened

so

as

to

prevent gun

cable

from swivelling. Connect

"Gas

Hose"

and "Gun Switch"

leads

to

respective sockets.

d)

WELDING

CABLES.

All

G.M.A.

welding

is

done

with

electrode

wire

connected to

"positive"

pole

comrn.only known

as

D.C.

reverse polarity

(D.C.R.P.)

therefore, connect the short jumper

lead

from

'I+''

socket on

machine

to terminal lug on gun

cable.

The work lead

("negative") should

be

plugged into

the

'I-''

socket on

the

machine. The plugs of the welding

cables

must

be

fully inserted

in the

sockets,

to

prevent accidental disconnection.

To

avoid

error,

welding should not

be

attempted

until all connections

have

been

secured. The

wire

feeder may

be

installed

remote

from

the

power

source, in

which

case,

extension

lead

sets

comprising

power

cable,

gas

hose

and control

cable

(four

core)

are required

in accordance

with

the

desired

length. Standard length

avail-

able

from

stock

is

9

m.etres.

3)

WIRE

FEEDER

AND

GUN

CABLE.

Fit

a

spool

of

wire

to

the

wire

feeder

(see

notes in

"Wire

Feeder Instruction Manual"). Tighten the

"brake"

screw

until

a

slight braking

effect

is

felt when turning the

wire

spool

by

hand

to

prevent "over-run" when

wire

feed

stops.

The

wire

drive

rolls

and

inlet

wire

guide should

be

selected

in accordance

with

the

diameter

and type

of

wire

being used.

Refer

to

current

wire

feeder manual

for

correct

selection

of

wire

feed

rolls

and input

guides.

0.8mm.

=

0.030"

1.6m

=

1/16"

0.9mm

=

0.035"

2.4m

=

3/32"

1.2mm

=

0.045"

3.2m

=

1/8"

The

gun

cable

and gun

are

normally delivered with

the contact

tip

and

liner spring

for

wire

size

nominated, but

check

that

both

are

correct

size for

wire

being used.

8.

-4-

WELDING

OPERATION

INSTRUCTIONS

SINGLE

FUNCTION

CHECK

Unit

is

now

ready

for

operation, but

prior

t

o

commen

ina,

the followins "functions check''

is

recommended,

cing

weld-

switch on

poGer source and check

air

flow.

See

that

all

welding lead

plugs

are

inserted

in

the

correct

polarity

sockets

-

electrode

"positive"

,

work

"negative". Check

all

welding connections

and plugs for tightness particularly "work"

clamp.

all

control

cables

and

gas

hoses

are

securely

connected and that

Gas

Heater

(for

C02

only)

is

plugged into

socket

at

rear

of

power

source. Switch on

wire

feeder,

indic-

ator

light should now

show

"Power On". Open

Gas

cylinder fully

and check contents gauge

for

adequate gas supply.

Press

"Gas

Purge" switch and

set

gas flow in accordance with

welding requirements,

at

the

same

time

check that

gas

flow

is

adequate

from

gun nozzle,

Set

"wire

speed" control

to

desired

wire

speed.

Press

"wire

inch" switch and check

wire

feed

for

correct

pressure on drive

rolls.

Pressure should

be

sufficient

to

prevent any ''slip" when feeding through gun and cable.

Next,

close

gun switch momentarily

for

wire

feed,

gas

flow

and

welding

power

check.

Set

the voltage

selector

switches in

accordance

with

required

voltage

(see

welding

table),

unit

is

now ready

for

welding.

The

welding current

is

determined automatically by

"Wire

Speed".

The electrode

wire

is

fed

at

the pre-selected

speed

by the

drive rolls through the gun

cable

to

the

arc

at

a

constant

speed,

unchanged

except

when

reset

by the

"Wire

Speed"

control. The

higher the

wire

speed,

the higher the welding current,

as

will

be

indicated by

the

ammeter.

The

output voltage

of

the power

source, indicated by the voltmeter when

the

gun switch

is

closed,

is

divided into

a

number

of

steps

by

Coarse

Selector

and Fine

Selector

switches.

The CP6

has

Coarse

Voltage

and

Fine Voltage Switches, each with

six

steps,

giving

36

voltage

settings for the machine. The

inductance terminal

sockets

are

numbered

''1

-

4".

No.1

socket

should

not

be

used for welding currents

over

300

amps.

Depend-

ing on the type

of

welding conditions, various inductance values

are

required. The typical

weld

setting chart indicates the

recommended sockets for various welding conditions.

As

a

general

rule, low welding currents require inductance

No.

1

or

2.

For

aluminium and tubular flux cored

wires,

inductance socket

No.

2

is

used exclusively.

-5-

The following sequence

of

weld setting

is

recommended:-

a) Consult typical weld setting chart.

b)

Select welding current most suited

to

the application

by

following the settings of wire speed and voltage shown on the

setting chart.

To

"tune" each weld setting, adjust wire

speed only.

c) If voltage

is

too low for the application, wire "stubbing"

will

occur, particularly at start of weld and weld contour

will

be very convex.

If

the voltage

is

too high, metal

transfer

will

be erratic

with

excess spatter.

d)

With

welding current and voltage matched the result

will

be an optimum tuned welding condition

with

a smooth spatter-

free arc.

10.

SAFETY

DEVICES

In

the event

of

the power source becoming overheated the ther-

mostats on the diode heat sinks

will

operate preventing further

welding. The thermostats

will

automatically reset and

with

the cooling fan operating

this

will

take approximately

10

min-

utes.

A

check should be made to ascertain the reason for the

over-heating such

as

fan not operating or air flow restricted.

Fuses provided for all circuits are as follows and are

indicated on the front panel:-

Fuse

El

-

3

amps

(Delayed

action)

Fuse

E2

-

3

amps

(

'l

'I

1

Fuse

E3

-

5

amps

(

'I

1

Fuse

E4

-

5

amps

(

'I

1

11

.

ENT

ENANC E

a)

Power Source

Apart from the fan the rectifier has no rotary components.

To achieve complete dissipation of heat from the active com-

ponents, the rectifier should be thoroughly blown off

with

dry

compressed air after

6

months' operation. Cleaning should

be carried out at shorter intervals if

dust

accumulation

is

considerable.

Prior

to

cleaning, remove the

unit

cover

by

detachment

of

lugs

and

the fixing screws. Thus

a11

the components of the power

source

will

bs

accessible.

b)

The wire feed motor/gearbox

is

pre-packed

with

grease and

needs no other lubrication. Change the grease after approx-

im.ately

14,000

service hours. (see Wire Feeder Instruction

Manual

.

The drive rollers

and

the inner

wire

guides

should

be kept

clean.

If

necessary,

blow

off

the inside

of

the

wire feeder

with

compressed air.

-6-

c)

Gun and

Cag

Remove any

spatter

which

might

adhere

to

the

nozzle

bore

so

that

the

shielding gas outflow

is

not

impeded.

The

condition

of

the

contact tubes should

be

regularly checked.

Damaged

and/or burnt

tubes

are

an impediment

to

trouble-free welding

operation and should

be

replaced immediately.

Trouble-free operation

depends

to

a

large extent on

the

good

condition and cleanliness

of

the inner

wire

liner

(See

Instr-

uctions on Gun

Cables).

12.

WELDING

OPERATION

Never observe

the

arc

with

unprotected eyes.

It

is

of impor-

tance that the

welder

wear

protective clothing providing

sufficient safety.

13.

STOPPAGES

AND

THEIR

ELIMINATION

The machine should

be

checked only by

a

fully

skilled

electr-

ician.

If

the

unit stops working,

first

determine whether stoppages

are

initiated by

the

mains

(for

instance, burnt fuse)

or

by

the

supply

cable

(loose connection,

cable

break)

or by

the

unit proper.

If

the three terminals

L1,

L2

and

L3

on

the

primary terminal

board

are

correctly connected to

the mains (voltmeter reading)

the cause of the stoppage must

be

sought in the unit

itself.

The wiring diagram on the next pages

will

facilitate the

location

of

the

defect.

-7-

WELDING

DATA

-

TYPICAL

VALUES

Shielding Gas

is

welding

Grade

C02

used

with

a

Gas

Preheater.

Contact Tip 1.5m inside

of

Gas Nozzle.

Wire

"Stick

Out"

6

-

9m.m

up

to

200

amps.

12

-

19mm

over

200

amps. These Tables

are a guide only for initial machine setting and finer

adjustments may be necessary

to

achieve optimum welding

characteristics for

the

application. Recommended machine

setting method

is

to

set

Voltage

Switches,

Inductance and Gas

Flow as per Table then adjust

wire

speed to obtain recommended

current.

:ect-

fier

JP6

Wire

Size Gas

0.9m

(Solid

Wire)

1.2m.

(Solid

Wire)

10

Lit./Min

(for

vertical Down)

15

Lit./Min

1.6mm

15/17

(Fluxo-

Lit./Min.

fil)

2.0m.

(Fluxofil)

2

.

4mrn

(Fluxofil)

Wire

Speed

Metres

Per

Min.

3.9

6.3

2.2

3.2

4.4

5.7

5.8

7.6

9.0

10.0

5.1

6.4

5.5

6.6

Coarse

-

2

3

4

5

6

4

1

190

4

2

200

2

3

250

2

330

3

2

360

4

2

380

5

2

450

6

2

500

1

2

550

Volt

18

21

20

21

22

23.5

26

27

31

32

33

34

35

NOTE:

Wire

speed

is

shown

in

metres/minute and are not dial

calibration settings.

-

I

TEP

NO.

-

2

2.1

2.2

2.3

3

3.1

4

4.1

4.2

5

S

9

18

21

22

24

25

26

26.1

27

28

29

30

32

33

34

37

38

39

40

37.1

37.2

8

DRAWING

NO.

CP6-02

-

SPARE PARTS LIST ISSUE

5.

PART

NO.

CP6-5

CP6-5/2

CP6-5/3

CP3-9/8

CP6-8

,

CP6-19

CP6-2

CP6-7/1

CP6-7/2

CP25-0/7

CP3-0/4

14235-0/6

CP15-0/7

CP5-25

CP5-0/19

AM1

6

CP15-0/14

TC262

TC262N

CP3-0/47

CP6-0/35

w1-22

CP6-0/47

CP5-0/13

CP5-0/14

CP5-0/15

W1-23

CP22-3/13

CP6-20

CP6-21

K10

K11

DESCRIPTION

RECTIFIER ASSEMBLY

DIODE

DIODE (R)

THE

R?.!lOS

TAT

TRANSFORMER ASSEMBLY

PRIMARY/SECONDARY COIL

INDUCTANCE ASSEMBLY

LEFT

HAND

INDUCTANCE COIL

RIGHT

HAND

INDUCTANCE COIL

CONTROL TRANSFORMER

FAN

BLADE

FAN

MOTOR

GAS

HEATER PLUG SOCKET

RECTIFIER PROTECTION ASSEMBLY

WELDING CONTACTOR

OUTPUT TERMINALS

CONTROL PLUG

GAS

NIPPLE

GAS

NIPPLE NUT

VOLTMETER 0-60V.

AMPETER 0-800A.

INDICATOR LIGHT

APNTER SHUNT 0-800A

POWER

ONYOFF

SWITCH

COARSE VOLTAGE SWITCH

FINE VOLTAGE SWITCH

FUSE HOLDER

STAND

OFF

INSULATOR

RESISTOR

SERIES RESISTOR

3AG.

3A

DELAY FUSE

3AG.

5A

DELAY FUSE

9

JVO

0

I

W

MU

0

,

l

t

"@

1

"

tR

3

?-

7

"

l,

6

0 0

0

C

b

SAFE

PRACTICES

IN

UStNG

WELDING

EQUIPMENT

These notes are provided in the interests

of

improving operator safety. They should be considered

only as a basic guide

to

Safe Working Habits.

A

full list

of

Standards pertaining

to

industry is available

from the Standards Association of Australia, also various State Electricity Authorities, Departments of

Labour and Industry or Mines Department and other Local Health or Safety Inspection Authorities may

have additional requirements.

EYE PROTECTION

NEVER

LOOK

AT

AN ARC WITHOUT PROTECTION. Wear a helmet with safety goggles or glasses

with side shields underneath, with appropriate filter lenses protected by clear cover glass. This is a

MUST for welding, cutting, and chipping to protect the eyes from radiant energy and flying metal.

Replace the cover glass when broken, pitted, or spattered.

WELDING

CURRENT

SHADE

NUMBER

Below

30

Amps

.......................................

6

30

-

75

Amps

.........................................

8

75

-

200

Amps

.......................................

10

200

-

400

Amps

......................................

12

Above

400

Amps

.....................................

14

BURN PROTECTION.

The welding arc is intense and visibly bright.

Its

radiation can damage eyes, penetrate lightweight

clothing, reflect from light-coloured surfaces, and burn the skin and eyes. Burns resulting from gas-

shielded arcs resemble acute sunburn, but can be more severe and painful.

Wear protective clothing

-

leather or heat resistant gloves, hat, and safety-toe boots. Button shirt

collar and pocket flaps, and wear cuffless trousers

to

avoid entry of sparks and stag.

Avoid oily or greasy clothing. A spark may ignite them. Hot metal such as electrode stubs and

workpieces should never be handled without gloves.

Ear plugs should be worn when welding

in

overhead positions or in a confined space. A hard hat

should be worn when others are working overhead.

Flammable hair preparations should not

be

used by persons intending to weld or cut.

TOXIC

FUME

PREVENTION.

Adequate ventilation with air is essential. Severe discomfort, illness or death can result from

fumes, vapors, heat,

of

oxygen depletion that welding or cutting may produce. NEVER ventilate with

oxygen.

Lead, cadmium, zinc, mercury, and beryllium bearing and similar materials when welded or cut

may produce harmful concentrations of toxic fumes. Adequate local exhaust ventilation must be used,

or

each person in the area as well as the operator must wear an air-supplied respirator.

For

beryllium,

both must be used.

Metals coated with or containing materials that emit fumes should not be heated unless coating is

removed from the work surface, the area

is

well ventilated, or the operator wears an air-supplied

respirator.

Work in a confined space only while

it

is

being ventilated and,

if

necessary, while wearing air-

supplied respirator.

Vapours from chlorinated solvents can be decomposed by the heat of

the

arc (or flame)

to

form

PHOSGENE,

a highly toxic gas, and lung and eye irritating products. The ultra-violet (radiant) energy

of

the arc can also decompose trichlorethylene and perchlorethylene vapors

to

form phosgene.

Do

not

weld or cut where solvent vapors can be drawn into the welding or cutting atmosphere or where the

radiant energy can penetrate

to

atmospheres containing even minute amounts

of

trichlorethylene or

percholorethylene.

FIRE

AND

EXPLOSION

PREVENTION.

Be aware that flying sparks or falling slag can pass through cracks, along pipes, through windows

or doors, and through wall

or

floor openings, out of sight of the operator. Sparks and slag can travel up

to

10

metres from the arc.

Keep equipment clean and operable, free of oil, grease, and (in electrical parts) of metallic

particles that can cause short circuits.

If

combustibles are present in the work area,

do

NOT

weld or cut. Move the work

if

practicable,

to

an area free of combustibles, Avoid paint spray rooms,

dip

tanks, storage areas, ventilators. If the work

can not be moved, move combustibles at least

10

metres away out of reach of sparks and heat; or

protect against ignition with suitable and snug-fltting fire-resistant covers or shields.

Walls touching combustibles on opposite sides should not be welded on

or

cut. Walls, ceilings,

and floor near work should be protected by heat-resistant covers or shields.

A

person acting as Fire Watcher must be standing by with suitable fire extinguishing equipment

during and for some time after welding or cutting

if;

R

Combustibles (including building construction) are within

10

metres.

m

Combustibles are further than

10

metres but can be ignited by sparks.

R

Openings (concealed or visible) In floors or walls within

10

metres may expose combustibles

m

Combustibles adjacent

to

walls, ceilings, roofs, or metal partitions can be ignited by radiant

or

After work is done, check that area is free

of

sparks, glowing embers, and flames.

to

sparks.

conducted heat.

An tank or drum which has contained combustibles can produce flammable vapors when heated.

Such a container must never be welded on or cut, unless

It

has first been cleaned as described in

AS.

1674-1 974,

the

S.A.A.

Cutting and Welding Safety Code. This includes a thorough steam or caustic

cleaning (or a solvent or water washing, depending on the combustible’s solubility), followed by

purging and inerting with nitrogen or carbon dioxide, and using protective equipment as recommended

in

AS.1674-1974.

Water-filling just below working level may substitute for inerting.

Hollow castings or containers must

be

vented before welding or cutting. They can explode. Never

weld or cut where the air may contain flammable dust, gas, or liquid vapours.

SHOCK

PREVENTION.

Exposed conductors or other bare metal in the welding circuit, or ungrounded electrically alive

equipment can fatally shock a person whose body becomes a conductor. Ensure that the machine is

correctly connected and earthed.

If

unsure have machine installed by a qualified electrician. On mobile

or portable equipment, regularly inspect condition

of

trailing power leads and connecting plugs.

Repair or replace damaged leads.

Fully insulated electrode holders should be used.

Do

not use holders with protruding screws.

Fully insulated lock-type connectors should be used

to

join welding cable lengths.

Terminals and other exposed parts of electrical units should have insulated knobs or covers

secured before operation.

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WIA Weldmatic 600 Owner's manual

WIA Weldmatic 600 Owner's manual

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