Miller HJ134589, Trailblazer 22G Owner's Manual

April

1978

FORM:

OM-457C

MODEL

Trailblazer

22G

OWN

ERS

MANUAL

ITIIIIER

MILLER

ELECTRIC

MFG.

CO.

718S.BOUNDS

ST.

P.O.

Box

1079

APPLETON,

WI

54912

USA

Effective

With

Serial

No.

HJ134589

NWSA

CODE

NO.

4579

PRINTED

IN

U.S.A.

LIMITED

WARRANTY

EFFECTIVE:

FEBRUARY

20,

1978

a

This

warranty

supersedes

all

previous

MILLER

warranties

and

is

ex

clusive

with

no

other

guarantees

or

warranties

expressed

or

implied.

LIMITED

WARRANTYMiller

Electric

Mfg.

Co..

Apple-

1.

Arc

welders,

power

sources,

and

components.

.

1

year

ton,

Wisconsin

warrants

to

Customer

that

all

new

and

unused

2.

Original

main

power

rectifiers

3

years

Equipment

furnished

by

Miller

is

free

from

defect

in

(Labor



1

year

only)

workmanship

and

material

as

of

the

time

and

place

of

delivery

by

Miller.

No

warranty

is

made

by

Miller

with

3.

All

welding

guns

and

feeder/guns

90

days

respect

to

engines,

trade

accessories

or

other

items

manu-

4.

All

other

Millermatic

Feeders

1

year

factured

by

others.

Such

engines,

trade

accessories

and

other

provided

that

the

user

so

notifies

Miller

in

writing

within

thirty

items

are

sold

subject

to

the

warranties

of

their

respective

(30)

days

of

the

date

of

such

failure.

manufacturers,

if

any.

The

manufacturers

warranty

on

5.

Replacement

or

repair

parts

exclusive

of

labor

60

days

engines

is

for

a

period

of

one

year.

MILLER

warranty

does

not

apply

to

components

having

ANY

EXPRESS

WARRANTY

NOT

PROVIDED

normal

useful

life

of

less

than

one

(1)

year,

such

as

spot

HEREIN

AND ANY

IMPLIED

WARRANTY,

GUARANTY

welder

tips,

relay

and

contactor

points,

MILLERMATIC

OR

REPRESENTATION

AS

TO

PERFORMANCE,

AND

parts

that

come

in

contact

with

the

welding

wire

including

ANY

REMEDY

FOR

BREACH

OF

CONTRACT

WHICH,

nozzles

and

nozzle

insulators

where

failure

does

not

result

BUT

FOR

THIS

PROVISION,

MIGHT

ARISE

BY

from

defect

in

workmanship

or

materiat.

IMPLICATION,

OPERATION

OF

LAW,

CUSTOM

OF

TRADE

OR

COURSE

OF

DEALING,

INCLUDING

ANY

In

the

case

of

Millers

breach

of

warranty

or

any

other

IMPLIED

WARRANTY

OF

MERCHANTABILITY

OR

OF

duty

with

respect

to

the

quality

of

any

goods,

the

exclusive

remedies

therefor

shall

be,

at

Millers

option,

(1)

repair

or

(2)

FITNESS

FOR

PARTICULAR

PURPOSE,

WITH

RESPECT

replacement

or,

where

authorized

in

writing

by

Miller

in

TO

ANY

AND

ALL

EQUIPMENT

FURNISHED

BY

appropriate

cases,

(3)

the

reasonable

cost

of

repair

or

MILLER

IS

EXCLUDED

AND

DISCLAIMED

BY

MILLER.

replacement

at

an

authorized

Miller

service

station

or

(4)

payment

of

or

credit

for

the

purchase

price

(less

reasoi~able

EXCEPT

AS

EXPRESSLY

PROVIDED

BY

MILLER

IN

depreciation

based

upon

actual

use)

upon

return

of

the

goods

WRITING,

MILLER

PRODUCTS

ARE

INTENDED

FOR

at

Customers

risk

and

expense.

All

transactions

are

FOB.

ULTIMATE

PURCHASE

BY

COMMERCIAL/INDUSTRIAL

$

Appleton.

Wisconsin.

Upon

receipt

of

notice

of

apparent

USERS

AND

FOR

OPERATION

BY

PERSONS

TRAINED

defect

or

failure,

Miller

shall

instruct

the

claimant

on

the

AND

EXPERIENCED

IN

THE

USE

AND

MAINTENANCE

warranty

claim

procedures

to

be

followed.

OF

WELDING

EQUIPMENT

AND

NOT,

FOR

CONSUMERS

As

a

matter

of

general

policy

only,

Miller

may

honor

an

OR

CONSUMER

USE.

MILLER

WARRANTIES

DO

NOT

original

users

warranty

claims

on

warranted

Equipment

in

EXTEND

TO,

AND

NO

RESELLER

IS

AUTHORIZED

TO

the

event

of

failure

resulting

from

a

defect within

the

following

periods

from

the

date

of

delivery

of

Equipment

to

EXTEND

MILLERS

WARRANTIES

TO,

ANY

the

original

user:

CONSUMER.

ERRATA

SHEET

After

this

manual

was

printed,

refinements

in

equipment

design

occurred.

This

sheet

lists

ex.cenXioi~s.tadata

aooearina

later

in

this

manual.

AMENDMENT

TO

SECTION

3

INSTALLATION

Amend

Section

3-3.

EQUIPMENT

GROUNDING

TERMINAL

Normally

engine-driven

welding

generators

do

not

require

grounding.

However,

this

machine

has

auxiliary

power

plant

capability;

therefore,

grounding

of

the

frame

and

case

is

recommended.

Also,

unusual

circumstances

may

re

quire

machine

grounding.

For

these

reasons

a

convenient

grounding

terminal

is

provided

on

all

weld/power

units.

For

detailed

grounding

instructions

consult

your,

local

or

state

codes

and

the

latest

issueofthe

National

Electrical

Code.

If

additional

information

regarding

your

particular

operating

circumstances

and/or

grounding

requirements

is

needed,

consult

a

qualified

electrician

or

your

dealer.

After

determining

the

extent

to

which

any

grounding

re

quirements

apply

to

your

particular

situation,

follow

them

explicitly.

Circuit

Groundingl

Jumper

Lead

IShipped

Ungrounded)

AMENDMENT

TO

SECTION

5-

FUNCTION

OF

GENERATOR

CONTROLS

Amend

Sections

5-1

and

5-9

Add

the

following

CAUTION

blockatthe

beginning

of

the

section

TC-000

680-B

Amend

Figure

3-3.

Power

Plant

Connections

Figure

3-3.

Power

Plant

Connections

CAUTION:

_______

The

auxiliary

power

capability

of

this

welding

generator

is

primarily

intended

for

use

with

portable

cord-

connected

accessory

equipment

(lights,

drills,

grinders,

etc.).

Do

not

connect

this

unit

to

any

service

box,

swit

chboard,

panelboard,

or

other

equipment

normally

supplied

by

other

electrical

power

unless

a

proper

transfer

switch

and

grounding

procedure

is

employed

(see

Section

3-3

for

unit

grounding

information).

ALWAYS

consult

the

local

electric

utility,

local

and

state

codes,

and

the

latest

issueofthe

National

Electrical

Code

for

proper

installation

pro

cedures.

Since

hazardous

voltages

are

present,

it

is

recommended

that the

installation

be

made

by

a

licensed

electri

-

clantoavoid

injury

or

damage

caused

by

improper

or

faulty

installation.

AMENDMENT

TO

SECTION

6-

FUNCTION

OF

ENGINE

CONTROLS

Delete

Section

6-7.

ELECTRICAL

TACHOMETER

(OPTIONAL)

/

AMENDMENT

TO

SECTION

7-

SEQUENCE

OF

OPERATION

Amend

Section

7-2.

POWER

PLANT

OPERATION

OM-457C

Page

A

CAUTION.:

-

Add

CAUTION

block

at

beginning

of

Section

/

The

weld

output

terminals

are

electrically

energized

when

the

engine

is

running.

Disconnect

the~

we/ding

cables

when

not

we/ding

and

do

not

touch

the

output

terminals

when

the

engineisrunning.

AMENDMENT

TO

SECTION

9-

ENGINE

MAINTENANCE

Amend

Section

9-3.

GOVERNOR

SERVICE

Weld

speed

of

this

engine

is

1850

rpm.

Amend

Section

9-4.

CARBURETOR

FLOAT

SETTING

Carburetor

Change

Effective

With

Serial

No.

HJ185451

I~1t~

Do

not

bend,

twist,

or

apply

pressure

on

the

float

body.

The

float

body,

when

viewed

from

the

free

end,

must

be

centered

between

and

at

right

angles

to

the

machined

surface,

and

must

move

freely

on

the

float

axle.

This

engine

is

equipped

with

a

Teledyne

Walbro

carburetor.

To

ensure

correct

fuel

level

in

the

float

chamber,

check

distance

(dimension

A,

Figure

9-1)

from

top

of

float

to

machined

surface

of

throttle

body

(no

gasket)

with

throttle

body

inverted.

This

dimension

should

be

1-1/16

inches

plus

or

minus

.020

inch.

To

increaseordecrease

distance

from

the

top

of

the

float

body

to

the

machined

surface,

use

a

long

nose

pliers

and

bend

the

float

lever

at

a

point

closetothe

float

body.

Delete

Figure

9-2.

Carburetor

Float

Setting

Amend

Section

9-9.

IDLE

CONTROL/GOVERNOR

LINKAGE

ADJUSTMENT

(Figure

9-7)

Amend

Figure

9-7.

IDLE

CONTROL/GOVERNOR

LINKAGE

ADJUSTMENT

To

obtain

proper

engine

idle

and/or

weld

speed,

perform~

the

following

procedures:

0M-457C

Page

B

Figure

9-7.

Idle

Control/Governor

Linkage

Adjustment

TCO8O

511

IMPORTANT

CAUTION

IMPORTANT

IMPORTANT

1.

Loosen

the

linkage

nuts

(6

&

8)

and

remove

the

hardware

(10)

securing

the

linkage

socket

(9)

to

the

governor.

Rotate

thelinkage

socket

(9)

until

the

throttle

stop

plate

(2)

is

about

1/32

inch

from

the

stop

(1).

A

clockwise

rotation

of

the

linkage

socket

(9)

will

shorten

the

governor

linkage

(7)

and

reduce

the

gap;

a

counterclockwise

rotationofthe

linkage

socket

(9)

will

lengthen

the

governor

linkage

(7)

and

widen

the

gap.

(In

some

cases

it

may

be

necessary

to

adjust

the

linkage

itself

to

obtain

the

1/32

inch

gap

required.)

Tighten

the

linkage

socket

nuts

(6

&

8)

to

lock

the

position

of

the

linkage

sockets

(5&9).

______________

Check

the

linkage

(7J

for

freedom

of

movement

throughout

its

entire

travel.Ifthe

linkage

is

binding

due

to

the

linkage

socket

nuts

(5

&

9)

being

out

of

proper

alignment,

loosen

the

linkage

socket

nuts

(6

&

8)

and

rotate

the

sockets

(5

&

9)

slightly

until

unrestricted

movement

of

the

linkage

(7)

is

restored.

Tighten

the

linkage

socket

nuts

(6&8).

Ensure

that

body

limbs

are

clear

of

the

fan

and

the

vacuum

motor

unit

before

starting

or

working

on

the

~.

engine.

-------

--------~

----

-

-

-:~-~

-

2.

Recheck

all

adjustments

made

thus

far.

Place

the

IDLE

CONTROL

switch

in

the

LOCK

OUT

position.

Start

the

engine

and

allow

it

to

reach

normal

operating

temperature

(about

five

minutes).

Ensure

that

the

CHOKE

control

is

pushed

fully

in

at

this

time.

-

3.

Pull

the

arm

(3)

toward

the

front

of

the

welding

generator

to

the

idle

position.

Maintain

pressure

on

the

arm

(3)

to

butt

against

the

idle

screw

(4)

throughout

the

following

adjustments:

A.

Rotate

the

idle

screw

(4)

to

obtain

550

rpm.

Clockwise

rotation

of

the

screw

(4)

will

increase

engine

rpm,

whereas

counterclockwise

rotationofthe

screw

(4)

will

decrease

engine

rpm.

B.

Rotate

the

idle

mixture

adjustment

screw

(20)

counterclockwise

until

the

engine

begins

to

falter

or

roll;

then

rotate

the

screw

(20)

clockwise

until

the

engine

operates

smoothly.

Rotating

the

screw

(20)

clockwise

restricts

the

fuel

flow,

making

the

air-fuel

mixture

leaner.

Rotating

the

screw

(20)

counterclockwise

admits

more

fuel,

making

the

air-fuel

mixture

richer.

Ensure

that

the

vacuum

motor

idle

screw

(16)

butts

against

the

vacuum

motor

unit

mounting

plate

BEFORE

the

throttle

stop

plate

(2)

butts

against

the

idle

screw

(4)

priortop/acing

the

IDLE

CONTROL

switch

in

the

AUTOMA

TIC

IDLE

position.

To

obtain

this

condition

it

may

be

necessary

to

adjust

screw

(16).

Check

by

manually

pivoting

the

vacuum

motor

arm

(17)

until

screw

(16)

butts

against

the

mounting

plate.

4.

Place

the

IDLE

CONTROL

switchinthe

AUTOMATIC

IDLE

position.

Operation

of

the

idling

deviceisautomatic

when

the

IDLE

CONTROL

switch

isinthe

AUTOMATIC

IDLE

position.

When

the

engine

is

running,

engine

rpm

will

remain

at

idle

until

an

arc

is

established,

at

which

time

the

engine

immediately

comes

up

to

weld

rpm.

When

the

arc

is

broken,

a

time

delay

will

exist

before

the

engine

begins

to

return

to

idle

rpm.

The

length

of

this

time

delay

is

controlledbythe

setting

of

the

time-delay

screw

A

in

Figure

9-7.

If

the

engine

does

not

go

to

idle

rpm

after

about

ten

seconds,

adjust

the

time-delay

screw

(A)

for

the

desired

time

delay.

This

screw

is

located

on

the

vacuum

line

fitting

going

into

the

intake

manifold

of

the

engine.~

5.

When

the

engine

has

gone

to

idle

rpm,

adjust

screw

(16)

until

1200

rpm

is

obtained.

I~EIi11~

Do

not

readjust

the

idle

rpm

screw

(4)

when

adjusting

the

vacuum

motor

idle

rpm.



-

______________

Check

the

linkage

(19)

for

freedom

of

movement

throughout

its

entire

travel.

If

the

linkageisbinding

due

to

the

linkage

socket

(18)

being

outof

proper

alignment

with

the

fixed

end,

adjust

the

tength

of

the

linkage.

It

will-

then

be

necessary

to

readjust

the

vacuum

motor

idle

screw

(16)

and

repeat

Steps

4

and

5.

Is~..tU.I

I

~

~

Ensure

that

body

limbs

are

clear

of

the

fan

and

the

vacuum

motor

unit

before

working

on

the

engine.

6.

Place

the

IDLE

CONTROL

switch

in

the

LOCK

OUT

position.

Loosen

the

governor

speed

adjusting

screw

secur

ing

nut

(11).

Adjust

the.governor

speed

adjustment

screw

(12)

until

a

high

idle

rpm

of

1850

is

obtained.

Tighten

the

securing

nut

(11)

to

maintain

the

governor

speed

setting.

7.

Check

the

governor

engine

regulation

by

applying

and

removing

the

engine

load.

If

a

governor

sensitivity

adjust

ment

is

deemed

necessary,

loosen

one

of

the

two

locking

nuts

(13)

and

proceed

with

the

following

instructions:

A.

IF

REGULATION

RANGE

IS

TOO

BROAD

-

Decrease

the

governor

spring

(15)

tension

by

sliding

the

sen

sitivity

adjustment

screw

(14)

inward.

B.

IF

REGULATION

RANGE

IS

TOO

NARROW

-

Increase

the

governor

spring

(15)

tension

by

sliding

the

sen

sitivity

adjustment

screw

(14)

outward.

C.

IF

ENGINE

SURGES

(HUNTS)

UNDER

LOAD

Increase

the

governor

spring

(15)

tension

by

sliding

the

sen

sitivity

adjustment

screw

(14)

outward.

-~

-

8.

Tighten

the

two

locking

nuts

(13)

to

maintain

the

desired

governor

sensitivity.

Readjust

the

governor

sensitivity

by

repeating

Step

7.

)

1~

Whenever

the

governor

sensitivity

(Step

7)

is

adjusted,

the

governor

speed

(Step

6)

MUST

be

readjusted.

Whenever

the

governor

speed

(Step

61

is

adjusted,

the

governor

sensitivfty

(Step

71

MAY

need

readjustment.

Amend

Section

9-10.

HIGH

ALTITUDE

CARBURETOR

MODIFICATION

(Optional)

(Figure

9-7)

The

Teledyne

Walbro

carburetor

can

be

equipped

with

an

adjustable

main

jet

for

high-altitude

operation

(above

4000

ft.).

Minor

adjustment

will

be

necessary

for

proper

operation

at

a

particular

altitude.

Whenever

a

carburetor

adjust

ment

is

deemed

necessary,

see

Figure

9-7

and

proceed

as

follows:

Loosen

the

main

adjustment

screw

locking

nut

(22).

Apply

a

near-full

engine

loadtothe

welding

generator.

Rotate

the

main

adjustment

screw

(21)

clockwise

until

the

engine

begins

to

falter

and

lose

RPM.

Rotate

the

main

adjustment

screw

(21)

counterclockwise

until

the

engine

operates

smoothly;

then

continue

counterclockwise

rotation

of

1/4

turn.

Rotating

the

screw

(21)

clockwise

restricts

the

fuel

flow,

making

the

air-fuel

mixture

leaner.

Rotating

the

screw

(21)

counterclockwise

admits

more

fuel,

making

the

air-fuel

mixture

richer.

Remove

the

engine

load.

Tighten

the

locking

nut

(22).

IMPORTANT

Restricting

the

fuel

flowtothe

point

where

the

mixture

is

too

lean

will-cause

valve

burning.

Delete

Figure

9-8.

High-Altitude

Carburetor

Adjustment

AMENDMENT

TO

SECTION

10

-

TROUBLESHOOTING

C

o~a

UETEA

(Q~T

C%AL)

OM-457C

PageD

Figure

10-1.

Circuit

Diagram

For

Models

Effective

With

Serial

No.

HJ211479

Amend

Figure

10-1.

Circuit

Diagram

AC

EOWE3

,,_-_~___

5EU~A4~.

GRCcu~UIC

~

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Circuit

Diagram

No.

B-081

027

)tem

Dia.

Part

No.

Listed

-

No.

Mkgs.

In

Parts

List

6

010318

33

053724

53

017421

77

Zi

036259

80

VS1

025932

OlO

493

053

359

Replaced

With

Part

No.

015

602

053

966
049685
036

377
024

017

Deleted

032

936

080

487

601158

079

486

010 014

010

891

030

170

011

609

Quantity

1

2

2

1

1

1
1

2

1

1

1
1

2

BE

SURE

TO

PROVIDE

MODEL

AND

SERIAL

NUMBERS

WHEN

ORDERING

REPLACEMENT

PARTS.

OM-457C

Page

E

Description

Page

4

Page

5

97

TAC

HM

032

936

032

936

039

269

100

146

S2,5

VALVE,

shut-off

w/strainer

-

fuel

GUARD,

fan

CATCH,

door

REACTOR

SUPPRESSOR,

0.75

uf

65

volts

ac

(Eff

with

S/N

HK311202)

METER

(dia.

mkg.

changed)

FUSE

BOX

(Eff

with

S/N

HJ211479)

BLANK,

snap

-

in

7/8

(Eff

with

S/N

HJ21

1479)

COVER,

junction

box

(Eff

with

S/N

HJ21

1479)

CLAMP,

steel

-

cushion

3/4

dia

x

13/64

hole

(Eff

with

S/N

HJ21

1479)

BLANK,

snap

-

in1inch

dia

(Eff

with

S/N

HJ211479)

BUSHING,snapin3/4IDx1

SWITCH,

toggle

SPDT

15

amp

125

volts

p.

Section

No.

TABLE

OF

CONTENTS

Page

No.

SECTION

1



SAFETY

RULES

FOR

OPERATION

OF

ARC

WELDING

POWER

SOURCE

SECTION

2

INTRODUCTION

2-1.

2-2.
2-3.

2-4.

General

Receiving-Handling

Description

Safety

SECTION

3

INSTALLATION

3-1.
3-2.

3

-

3.

3-4.

4-1.

4

-

2.

4

-

3.

4

-

4.

4-5.

5-1.

5

-

2.

5-3.
5-4.
5-5.

5

-

6.

5-7.

5-8.
5-9.

6-1.

6-2.
6-3.

6-4.

6-5.

6-6.

6-7.
6

-

8.

7-

1.

7

-

2.

7

-

3.

7

-

4.

Location

Weld

Output

Connections

Equipment

Grounding

Terminal

Remote

Amperage

Control

Connections

6677

7

8

8
8
9
9

10

10

10

10

10
11

11
11
11

12
12
12

12
12

12

12
12

13
13
13
13

1

-1.

1

-

2.

1

-

3.

1-4.

Introduction

General

Precautions

Arc

Welding

Standards

Booklet

Index

1

3

4

5

5

5

5

3-

5.

120/240

Volts

AC

Terminals..

SECTION

4

ENGINE

PREPARATION

Lubrication

Coolant

System

Preparing

New

Battery

For

Service

Air

Cleaner

Fuel

SECTION

5



FUNCTION

OF

GENERATOR

CONTROLS

120

Volts

AC

Receptacle

Range

Switch

Fine

Amperage

Control

Remote

Amperage

Control

Volt-Ampere

Curves

Duty

Cycle

Polarity

Switch

Meters

240

Volts

AC

Duplex

Receptacle

SECTION

6

FUNCTION

OF

ENGINE

CONTROLS

Choke

Control

Start

Push

Button

And

Switch

Idle

Control

Switch

Engine

Ammeter

Temperature

Gauge

Oil

Pressure

Gauge

Electrical

Tachometer

Total

Hour

Meter

SECTION

7



SEQUENCE

OF

OPERATION

Sheilded

Metal-Arc

(SMAW)

Welding

Power

Plant

Operation

Starting

The

Engine

Engine

Shut

Down

Section

No.

Page

No.

SECTION

8



GENERATOR

MAINTENANCE

8-1.

General

14

8

-

2.

Collector

Ring

Brushes

14

8-

3.

Welding

Cables

14

SECTION

9

ENGINE

MAINTENANCE

9-1.

Lubrication

14

9~

2.

Coolant

System

14

9-3.

Governor

Service

15

9.

4.

Carburetor

Float

Setting

15

9-

5.

Vacuum

Circuit

Air

Filter

15

9.6.Idle

Control

Time

Delay

Adjustment

15

9-

7.

Carburetor

Air

Temperature

Selector

15

9-8.Air

Cleaner

Service

16

9-

9.

Idle

Control/Governor

Linkage

Adjustment

17

9.10.

High

Altitude

Carburetor

Modification

18

9.11.

Key

Type

Ignition

Switch

Lubrication

18

9-12.

Spark

Arrestor

18

SECTION

10

TROUBLESHOOTING

PARTS

LIST

SECTION

1-SAFETY

RULES

FOR

OPERATION

OF

ARC

WELDING

POWER

SOURCE

1-1.

INTRODUCTION

1-2.

A.

We

learn

by

experience.

Learning

safety

through

personal

experience,

like

a

child

touching

a

hot

stove

is

harmful,

wasteful,

and

unwise.

Let

the

experience

of

others

teach

you.

Safe

practices

developed

from

experience

in

the

use

of

weld

ing

and

cutting

are

described

in

this

manual.

Research,

devel

opment,

and

field

experience

have

evolved

reliable

equipment

and

safe

installation,

operation,

and

servicing

practices.

Acci

dents

occur

when

equipmentisimproperly

used

or

main

tained.

The

reason

for

the

safe

practices

may

not

always

be

given.

Some

are

based

on

common

sense,

others

may

require

technical

volumes

to

explain.

It

is

wiser

to

follow

the

rules.

Read

and

understand

these

safe

practices

before

attempting

to

install,

operate,

or

service

the

equipment.

Comply

with

these

procedures

as

applicable

to

the

particular

equipment

used

and

their

instruction

manuals,

for

personal

safety

and

for

the

safety

of

others.

Failure

to

observe

these

safe

practices

may

cause

serious

in

jury

or

death.

When

safety

becomes

a

habit,

the

equipment

can

be

used

with

confidence.

These

safe

practices

are

divided

into

two

Sections:

1

-

General

Precautions,

common

to

arc

welding

and

cutting;

and

2

-

Arc

Welding

(and

Cutting)

(only).

Reference

standards:

Published

Standards

on

safety

are

also

available

for

additional

and

more

complete

procedures

than

those

given

in

this

manual.

They

are

listedinthe

Standards

Index

in

this

manual.

ANSI

Z49.1

is

the

most

complete.

The

National

Electrical

Code,

Occupational

Safety

and

Health

Administration,

local

industrial

codes,

and

local

in

spection

requirements

also

provide

a

basis

for

equipment

in

stallation,

use,

and

service.

GENERAL

PRECAUTIONS

Burn

Prevention

Wear

protective

clothing

-

leather

(or

asbestos)

gauntlet

gloves,

hat,

and

high

safety-toe

shoes.

Button

shirt

collar

and

pocket

flaps,

and

wear

cuffless

trousers

to

avoid

entry

of

sparks

and

slag.

Wear

helmet

with

safety

gogglesorglasses

with

side

shields

underneath,

appropriate

filter

lenses

or

plates

(protected

by

clear

cover

glass).

This

is

a

MUST

for

weldingorcutting,

(and

chipping)

to

protect

the

eyes

from

radiant

energy

and

flying

metal.

Replace

cover

glass

when

broken,

pitted,

or

spattered.

See

1-3A.2.

Avoid

Oily

or

greasy

clothing.

A

spark

may

ignite

them.

Hot

metal

such

as

electrode

stubs

and

workpieces

should

never

be

ha,dled

without

gloves.

Medical

first

aid

and

eye

treatment.

First

aid

facilities

and

a

qualified

first

aid

person

should

be

available

for

each

shift

unless

medical

facilities

are

close

by

for

immediate

treatment

of

flash

burnsofthe

eves

and

skin

burns.

Ear

plugs

should

be

worn

when

working

on

overhead

or

in

a

confined

space.

A

hard

hat

should

be

worn

when

others

work

overhead.

Flammable

hair

preparations

should

not

be

used

by

persons

intending

to

weld

or

cut.

B.

Toxic

Fume

Prevention

Adequate

ventilation.

Severe

discomfort,

illness

or

death

can

result

from

fumes,

vapors,

heat,

or

oxygen

enrichment

or

depletion

that

welding

(or

cutting)

may

produce.

Prevent

them

with

adequate

ventilationasdescribed

in

ANSI Stan

dard

Z49.1

listed

1

in

Standards

index.

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

toxic

fumes

should

not

be

heated

unless

coating

is

removed

from

the

work

surface,

the

area

is

well

ventilated,

or

the

operator

wears

an

air-suppied

respirator.

Work

in

a

confined

space

only

while

it

is

being

ventilated

and,

if

necessary,

while

wearing

an

air-supplied

respirator.

Gas

leaks

in

a

confined

space

should

be

avoided.

Leaked

gas

in

large

quantities

can

change

oxygen

concentration

danger

ously.

Do

not

bring

gas

cylinders

intoaconfined

space.

Leaving

confined

space,

shut

OFF

gas

supply

at

source

to

prevent

possible

accumulation

of

gases

in

the

space

if

down

stream

valves

have

been

accidently

opened

or

left

open.

Check

to

be

sure

that

the

space

is

safe

before

re-entering

it.

Vapors

from

chlorinated

solvents

can

be

decomposed

by

the

heat

of

the

arc

(or

flame)

to

form

PI-IOSGENE,

a

highly

toxic

gas,

and

other

lung

and

eye

irritating

products.

The

ultra

violet

(radiant)

energy

of

the

arc

can

also

decompose

tn

chloroethylene

and

perchloroethylene

vapors

to

form

phos

gene.

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

trichloroethylene

or

perchloroethylene.

C.

Fire

and

Explosion

Prevention

Causesoffire

and

explosion

are:

combustibles

reached

by

the

arc,

flame,

flying

sparks,

hot

slag

or

heated

material;

misuse

of

compressed

gases

and

cylinders;

and

short

circuits.

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

goggled

operator.

Sparks

and

slag

can

fly

35

feet.

To

prevent

fires

and

explosion:

Keep

equipment

clean

and

operable,

free

of

oil,

grease,

and

(in

electrical

parts)

of

metallic

particles

that

can

cause

short

circuits.

If

combustibles

are

in

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

cannot

be

moved,

move

combustibles

at

least35feet

away

Out

of

reach

of

sparks

and

heat;

or

protect

against

ignition

with

suitable

and

snug-fitting,

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.

Fire

watcher

must

be

standing

by

with

suitable

fire

ex

tinguishing

equipment

during

and

for

some

time

after

weld

ing

or

cutting

if:

a.

appreciable

combustibles

(including

building

construc

tion)

are

within35feet

b.

appreciable

combustibles

are

further

than

35

feet

but

can

be

ignited

by

sparks

c.

openings

(concealed

or

visible)

in

floors

or

walls

within

35

feet

may

expose

combustibles

to

sparks

d.

combustibles

adjacent

to

walls,

ceilings,

roofs,

or

metal

partitions

can

be

ignited

by

radiant

or

conducted

heat.

Hot

work

permit

should

be

obtained

before

operation

to

ensure

supervisors

approval

that

adequate

precautions

have

been

taken.

After

work

is

done,

check

that

area

is

free

of

sparks,

glowing

embers,

and

flames.

-

An

empty

container

that

held

combustibles,

or

that

can

pro

duce

flammable

or

toxic

vapors

when

heated,

must

never

be

welded

on

or

cut,

unless

container

has

first

been

cleaned

as

described

in

AWS

Standard

A6.O,

listed3in

Standards

index.

OM-457

Page

1

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

recom

mended

in

A6.0.

Waterfilling

just

below

working

level

may

substitute

for

inerting.

A

container

with

unknown

contents

should

be

cleaned

(see

paragraph

above).

Do

NOT

depend

on

sense

of

smell

or

sight

to

determine

if

it

is

safe

to

weld

or

cut.

Hollow

castings

or

containers

must

be

vented

before

welding

or

cutting.

They

can

explode.

Explosive

atmospheres.

Never

weld

or

cut

where

the

air

may

contain

flammable

dust,

gas,

or

liquid

vapors

(such

as

gaso

line).

D.

Compressed

Gas

Equipment

Standard

precautions.

Comply

with

precautions

in

this

manual,

and

those

detailedinCGA

Standard

P-i,

PRECAU

TIONS

FOR

SAFE

HANDLING

OF

COMPRESSED

GASES

~N

CYLINDERS,

listed

6

in

Standards

index.

1.

Pressure

Regulators

Regulator

relief

valve

is

designed

to

protect

only

the

regula

tor

from

overpressure;

it

is

not

intended

to

protect

any

downstream

equipment.

Provide

such

protection

with

one

or

more

relief

devices.

Never

connect

a

regulator

to

a

cylinder

containing

gas

other

than

that

for

which

the

regulator

was

designed.

Remove

faulty

regulator

from

service

immediately

for

repair

(first

close

cylinder

valve).

The

following

symptoms

indicate

a

faulty

regulator:

Leaks

-

if

gas

leaks

externally,

Excessive

Creep

-

if

delivery

pressure

continues

to

rise

with

downstream

valve

closed.

Faulty

Gauge

-

if

gauge

pointer

does

not

move

off

stop

pin

when

pressurized,

nor

returns

to

stop

pin

after

pressure

release.

Repair.

Do

NOT

attempt

repair.

Send

faulty

regulators

for

repair

to

manufacturers

designated

repair

center,

where

special

techniques

and

tools

are

used

by

trained

personnel.

2.

Cylinders

Cylinders

must

be

handled

carefully

to

prevent

leaks

and

damage

to

their

walls,

valves,orsafety

devices:

Avoid

electrical

Circuit

contact

with

cylinders

including

third

rails,

electrical

wires,

or

welding

circuits.

They

can

produce

short

circuit

arcs

that

may

lead

to

a

serious

accident.

(See

1-3C,)

ICCorDOT

marking

must

be

on

each

cylinder.

It

is

an

assurance

of

safety

when

the

cylinder

is

properly

handled.

Identifying

gas

content.

Use

only

cylinders

with

name

of

gas

marked

on

them;

do

not

rely

on

color

to

identify

gas

con

tent.

Notify

supplier

if

unmarked.

NEVER

DEFACE

or

alter

name,

number,

or

other

markings

on

a

cylinder.

It

is

illegal

and

hazardous.

Empties:

Keep

valves

closed,

replace

caps

securely;

mark

MT;

keep

them

separate

from

FULLS

and

return

promptly.

Prohibited

use.

Never

use

a

cylinder

or

its

contents

for

other

than

its

intended

use,

NEVER

as

~a

support

or

roller.

Locate

or

secure

cylinderssothey

cannot

be

knocked

over.

Passageways

and

work

areas.

Keep

cylinders

clear

of

areas

where

they

may

be

struck.

Transporting

cylinders.

With

a

crane,

useasecure

support

such

as

a

platform

or

cradle.

Do

NOT

lift

cylinders

off

the

ground

by

their

valves

or

caps,

or

by

chains,

slings,

or

mag

no

ts.

Do

NOT

expose

cylinders

to

excessive

heat,

sparks,

slag,

and

flame,

etc.

that

may

cause

rupture.

Do

not

allow

contents

to

exceed

130F.

Cool

with

water

spray

where

such

exposure

exists.

Protect

cylinders

particularly

valves

from

bumps,

falls,

falling

objects,

and

weather.

Replace

caps

securely

when

moving

cylinders.

Stuck

valve.

Do

NOT

use

a

hammer

or

wrench

to

open

a

cylinder

valve

that

can

not

be

opened

by

hand.

Notify

your

Supplier.

Mixing

gases.

Never

try

to

mix

any

gases

in

a

cylinder.

Never

refill

any

cylinder.

Cylinder

fittings

should

never

be

modified

or

exchanged.

3.

Hose

Prohibited

use.

Never

use

hose

other

than

that

designed

for

the

specified

gas.

A

general

hose

identification

rule

is:

red

for

fuel

gas,

green

for

oxygen,

and

black

for

inert

gases.

Use

ferrules

or

clamps

designed

for

the

hose

(not

ordinary

wire

or

other

substitute)

as

a

binding

to

connect

hoses

to

fittings.

No

copper

tubing

splices.

Use

only

standard

brass

fittings

to

splice

hose.

Avoid

long

runs

to

prevent

kinks

and

abuse.

Suspend

hose

off

ground

to

keep

it

from

being

run

over,

stepped

on,

or

other

wise

damaged.

Coil

excess

hose

to

prevent

kinks

and

tangles.

Protect

hose

from

damage

by

sharp

edges,

and

by

sparks,

slag,

and

open

flame.

Examine

hose

regularly

for

leaks,

wear,

and

loose

connec

tions.

Immerse

pressured

hose

in

water;

bubbles

indicate

leaks.

Repair

leaky

or

worn

hose

by

cutting

area

Out

and

splicing

(1-2D3).

Do

NOT

use

tape.

4.

Proper

Connections

Clean

cylinder

valve

outlet

of

impurities

that

may

clog

orifices

and

damage

seals

before

connecting

regulator.

Except

for

hydrogen,

crack

valve

momentarily,

pointing

outlet

away

from

people

and

sources

of

ignition.

Wipe

with

a

clean

lint-

less

cl

0th.

Match

regulator

to

cylinder.

Before

connecting,

check

that

the

regulator

label

and

cylinder

marking

agree,

and

that

the

regulator

inlet

and

cylinder

outlet

match.

NEVER

CON

NECT

a

regulator

designed

for

a

particular

gasorgases

to

a

cylindercontaining

any

other

gas.

Tighten

connections.

When

assembling

threaded

connections,

clean

and

smooth

seats

where

necessary.

Tighten.

If

connec

tion

leaks,

disassemble,

clean,

and

retighten

using

properly

fitting

wrench.

-

Adapters.

Use

a

CGA

adapter

(available

from

your

supplier)

between

cylinder

and

regulator,

if

one

is

required.

Use

two

wrenches

to

tighten

adapter

marked

RIGHT

and

LEFT

HAND

threads.

Regulator

outlet

(Or

hose)

connections

may

be

identified

by

right

hand

threads

for

oxygen

and

left

hand

threads

(with

grooved

hex

on

nut

or

shank)

for

fuel

gas.

5.

Pressurizing

Steps:

Drain

regulator

of

residual

gas

through

suitable

vent

before

opening

cylinder

(or

manifold

valve)

by

turning

adjusting

screw

in

(clockwise).

Draining

prevents

excessive

compression

heat

at

high

pressure

seat

by

allowing

seat

to

open

on

pressur

ization.

Leave

adjusting

screw

engaged

slightly

on

single-stage

regulators.

Standtoside

of

regulator

while

opening

cylinder

valve.

Open

cylinder

valve

slowly

so

that

regulator

pressure

in

creases

slowly.

When

gauge

is

pressurized

(gauge

reaches

regu

lator

maximum)

leave

cylinder

valve

.in

following

position:

For

oxygen,

and

inert

gases,

open

fully

to

seal

stem

against

possible

leak.

For

fuel

gas,

open

to

less

than

one

turn

to

permit

quick

emergency

shutoff.

Page

2

Use

pressure

charts

(available

from

your

supplier)

for safe

and

efficient,

recommended

pressure

settings

on

regulators.

Check

for

leaks

on

first

pressurization

and

regularly

there

after.

Brush

with

soap

solution

(capful

of

Ivory

Liquid

or

equivalent

per

gallon

of

water).

Bubbles

indicate

leak.

Clean

off

soapy

water

after

test;

dried

soap

is

combustible.

E.

User

Responsibilities

Remove

leaky

or

defective

equipment

from

service

immed

iately

for

repair.

See

Use!

Responsibility

statement

in

equip

ment

manual.

F.

Leaving

Equipment

Unattended

Close

gas

supply

at

source

and

drain

gas.

G.

Rope

Staging-Support

Rope

staging-support

should

not

be

used

for

welding

or

cut

ting

operation;

rope

may

burn.

1~3.

ARC

WELDING

Comply

with

precautions

in

1-1,

1-2,

and

this

section.

Arc

Welding,

properly

done,

is

a

safe

process,

but

a

careless

opera

tor

invites

trouble.

The

equipment

carries

high

currents

at

significant

voltages.

The

arc

is

very

bright

and

hot.

Sparks

fly,

fumes

rise,

ultraviolet

and

infrared

energy

radiates,

weld

ments

are

hot,

and

compressed

gases

may

be

used.

The

wise

operator

avoids

unnecessary

risks

and

protects

himself

and

others

from

accidents.

Precautions

are

described

here

and

in

standards

referenced

in

index.

A.

Burn

Protection

Comply

with

precautions

in

1-2.

The

welding

arc

is

intense

and

visibly

bright

Its

radiation

can

damage

eyes,

penetrate

lightweight

clothing,

reflect

from

light-colored

surfaces,

and

burn

the

skin

and

eyes.

Skin

burns

resemble

acute

sunburn,

those

from

gas-shielded

arcs

are

more

severe

and

painful.

DONT

GET

BURNED;

COMPLY

WITH

PRECAUTIONS.

1.

Protective

Clothing

Wear

long-sleeve

clothing

(particularly

for

gas-shielded

arc)

in

addition

to

gloves,

hat,

and

shoes

(1-2A).

As

necessary,

use

additional

protective

clothing

such

as

leather

jacket

or

sleeves,

flame-proof

apron,

and

fire-resistant

leggings.

Avoid

outergarments

of

untreated

cotton.

Bare

skin

protection.

Wear

dark,

substantial

clothing.

Button

collar

to

protect

chest

and

neck

and

button

pockets

to

pre

vent

entry

of

sparks.

2.

Eye

and

Head

Protection

Protect

eyes

from

exposure

to

arc.

NEVER

look

at

an

elec

tric

arc

without

protection.

Welding

helmet

or

shield

containing

a

filter

plate

shade

no.

12

or

denser

must

be

used

when

welding.

Place

over

face

before

striking

arc.

Protect

filter

plate

withaclear

cover

plate.

Cracked

or

broken

helmetorshield

should

NOT

be

worn;

radiation

can

pass

through

to

cause

burns.

Cracked,

broken,

or

loose

filter

plates

must

be

replaced

IM

MEDIATELY.

Replace

clear

cover

plate

when

broken,

pitted,

or

spattered.

Flash

goggles

with

side

shields

MUST

be

worn

under

the

helmet

to

give

some

protection

to

the

eyes

should

the

helmet

not

be

lowered

over

the

face

before

an

arc

is

struck.

Looking

at

an

arc

momentarily

with

unprotected

eyes

(particularly

a

high

intensity

gas-shielded

arc)

can

cause

a

retinal

burn

that

may

leave

a

permanent

dark

area

in

the

fieldofvision.

3.

Protection

of

Nearby

Personnel

Enclosed

welding

area.

For

production

welding,

a

separate

room

or

enclosed

bay

is

best.

In

open

areas,

surround

the

operation

with

low-reflective,

non.cornbustible

screens

or

panels.

Allow

for

free

air

circulation,

particularly

as

floor

level.

Viewing

the

weld.

Provide

face

shields

for

all

persons

who

will

be

looking

directly

at

the

weld.

Others

working

in

area.

See

that

all

persons

are

wearing

flash

goggles.

Before

starting

to

weld;

make

sure

that

screen

flaps

or

bay

doors

are

closed.

B.

Toxic

Fume

Prevention

Comply

with

precautions

in

1-2B.

Generator

engine

exhaust

must

be

ventedtothe

outside

air.

Carbon

monoxide

can

kill.

C.

Fire

and

Explosion

Prevention

Comply

with

precautions

in

1-2C.

Equipments

rated

capacity.

Do

not

overload

arc

welding

equipment.

It

may

overheat

cables

and

cause

a

fire.

Loose

cable

connections

may

overheatorflash

and

cause

a

fire.

Never

strike

an

arc

on

a

cylinder

or

other

pressure

vessel.

It

creates

a

brittle

area

that

can

cause

a

violent

rupture

or

lead

to

such

a

rupture

later

under

rough

handling.

D.

Compressed

Gas

Equipment

Comply

with

precautions

in

1-2D.

E.

Shock

Prevention

Exposed

hot

conductors

or

other

bare

metalinthe

welding

circuit,

or

in

ungrounded,

electrically-HOT

equipment

can

fatally

shock

a

person

whose

body

becomes

a

conductor.

DO

NOT

STAND,

SIT,

LIE,

LEAN

ON,

OR

TOUCH

a

wet

sur

face

when

welding,

without

suitable

protection.

To

protect

against

shock:

Keep

body

and

clothing

dry.

Never

work

in

damp

area

with

out

adequate

insulation

against

electrical

shock.

Stay

on

a

dry

duckboard,

or

rubber

mat

when

dampness

or

sweat

can

not

be

avoided.

Sweat,

sea

water,

or

moisture

between

body

and

an

electrically

HOT

part

-

or

grounded

metal-reduces

the

body

surface

electrical

resistance,

enabling

dangerous

and

possibly

lethal

currents

to

flow

through

the

body.

1.

Grounding

the

Equipment

When

installing,

connect

the

frames

of

each

unit

such

as

welding

power

source,

control,

i&ork

table,

and

water

circula

tor

to

the

building

ground.

Conductors

must

be

adequate

to

carry

ground

currents

safely.

Equipment

made

electrically

HOT

by

stray

current

may

shock,

possibly

fatally.

Do

NOT

GROUND

so

electrical

conduit,

or

to

a

pipe

carrying

ANY

gas

or

a

flammable

liquid

such

as

oil

or

fuel.

Three-phase

connection.

Check

phase

requirement

of

equip

ment

before

installing.

If

only

3-phase

power

is

available,

connect

single-phase

equipment

to

only

two

wires

of

the

3-phase

line.

Do

NOT

connect

the

equipment

ground

lead

to

the

third

(live)

wire,

or

the

equipment

will

become

electri-.

cally

HOT

-

a

dangerous

condition

that

can

shock,

possibly

fatally.

Before

welding,

check

ground

for

continuity.

Be

sure

conduc

tors

are

touching

bare

metal

of

equipment

frames

at

connec

tions.

If

a

line

cord

with

a

ground

lead

is

provided

with

the

equip

ment

for

connection

to

a

switchbox,

connect

the

ground

lead

to

the

grounded

switchbox.

If

a

three-prong

plug

is

added

for

connection

to

a

grounded

mating

receptacle,

the

ground

lead

must

be

connected

to

the

ground

prong

only.

If

the

line

cord

comes

with

a

three-prong

plug,

connect

to

a

grounded

mating

receptacle.

Never

remove

the

ground

prong

from

a

plug,

or

use

a

plug

with

a

broken

off

ground

prong.

Trademark

of

Proctor

&

Gamble.

OM-457

Page

3

2.

Electrode

Holders

Fully

insulated

electrode

holders

should

be

used.

Do

NOT

use

holders

with

protruding

screws.

3.

Connectors

Fully

insulated

lock-type

connectors

should

be

used

to

join

welding

cable

lengths.

4.

Cables

Frequently

inspect

cables

for

wear,

cracks

and

damage.

IMMEDIATELY

REPLACE

those

with

excessively

worn

or

damaged

insulation

to

avoid

possibly

-

lethal

shock

from

bared

cable.

Cables

with

damaged

areas

may

be

taped

to

give

resistance

equivalent

to

original

cable.

Keep

cable

dry,

free

of

oil

and

grease,

and

protected

from

hot

metal

and

sparks.

5.

Terminals

And

Other

Exposed

Parts

Terminals

and

other

exposed

parts

of

electrical

units

should

have

insulating

covers

secured

before

operation.

6.

Electrode

Wire

Electrode

wire

becomes

electrically

HOT

when

the

power

switch

of

gas

metal-arc

welding

equipment

is

ON

and

welding

gun

trigger

is

pressed.

Keep

hands

and

body

clear

of

wire

and

other

HOT

parts.

7.

Safety

Devices

Safety

devices

such

es

interlocks

and

circuit

breakers

should

not

be

disconnected

or

shunted

out.

Before

installation,

inspection,

or

service,

of

equipment,

shut

OFF

all

power

and

remove

line

fuses

(or

lock

or

red-t~

switches)

to

prevent

accidental

turning

ON

of

power.

Discon.

nect

all

cables

from

welding

power

source,

and

pull

all

115

volts

line-cord

plu~.

Do

not

open

power

circuit

or

change

polarity

while

welding.

If,

in

an

emergency,

it

must

be

disconnected,

guard

against

shock

burns,

or

flash

from

switch

arcing.

Leaving

equipment

unattended.

Always

shut

OFF

and

dis

connect

all

power

to

equipment.

Power

disconnect

switch

must

be

available

near

the

welding

power

source.

1-4.

STANDARDS

BOOKLET

INDEX

For

more

information,

refer

to

the

following

standards

or

their

latest

revisions

and

comply

es

applicable:

1.

ANSI

Standard

Z49.1,

SAFETY

IN

WELDING

AND

CUTTING

obtainable

from

the

American

Welding

Society,

2501

NW

7th

St.

Miami;

Fla.

33125.

2.

ANSI

Standard

Z87.i,

SAFE

PRACTICE

FOR

OCCUPA

TION

AND

EDUCATIONAL

EYE

AND

FACE

PROTEC

TION,

obtainable

from

American

National

Standards

Institute,

1430

Broadway.

New

York,

N.Y.

10018.

3.

American

Welding

Society

Standard

A6.0.

WELDING

AND

CUTTING

CONTAINERS

WHICH

HAVE

HELD

COMBUSTIBLES,

obtainable

same

as

item

1.

4.

NFPA

Standard

51,

OXYGEN-FUEL

GAS

SYSTEMS

FOR

WELDING

AND

CUTTING,

obtainable

from

the

National

Fire

Protection

Association,

470

AtlantIc

Avenue,

Boston,

Mass.

02210.

5.

NFPA

Standard

51B,

CUTTING

AND

WELDING

PRO.

CESSES,

obtainable

same

as

item

4.

6.

CGA

Pamphlet

P-i.

SAFE

HANDLING

OF

COM

PRESSED

GASES

IN

CYLINDERS,

obtainablefrom

the

Compressed

Gas

Association,

500

Fifth

Avenue,

New

York,

N.

Y.

10036.

7.

OSHA

Standard

29

CFR,

Part

1910,

Subpart

Q,

WELD.

ING,

CUTTING

AND

BRAZING.

Page

4