Miller Electric MMT-210A Owner's Manual

March

1974

FORM:

OM-1024

ADDITIONAL

COPY

PRICE

25

CENTS

.030

Wire

.035

Wire

.045

Wire

MODEL/STOCK

NO.

SERIAL/STYLE

NO.

DATE

PURCHASED

OWNERS

MANUAL

MILLER

ELECTRIC

MFG.

CO.

APPLETON,

WISCONSIN,

USA

54911

10

Ft.

058

554

058

555

058

556

15

Ft.

058

557

058

558

058

559

Effective

with

Style

No.

HE-i

MODEL:

MMT-210A

NWSA

CODE

NO.

4579

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WARRANTY

MILLER

Electric

Mfg.

Co.,

Appleton,

Wisconsin,

warrants

all

new

equipment

to

be

free

from

defects

in

material

and

factory

workmanship

for

the

periods

indicated

below,

provided

the

equipment

is

installed

and

C

)

CD

operated

according

to

manufacturers

instructions.

CD
CD
CD

MILLER

Electric

Mfg.

Co.s

obligation,

under

this

warranty,

is

limited

to

replacingorrepairing

any

defective

part

or

correcting

any

manufacturing

defect

without

charge

during

the

warranty

period

if

MILLERS

inspec-

C

)

C)

tion

confirms

the

existenceofsuch

defects.

MILLERS

optionofrepair

or

replacement

will

bef.o.b.

factory

at

c

Appleton,

Wisconsin

or

f.o.b.aMILLER

authorized

service

facility,

and

therefore

no

compensation

for

trans

I

~

portationcostsofanykindwillbeallowed.

C)
C)

The

warranty

period,

beginning

on

the

date

of

sale

to

the

original

purchaser-user

of

the

equipment,

will

be

as

I

~

follows:

c

1

Arc

welders,

power

sources,

and

components



1

year

C

C)

2.

Original

main

power

rectifiers



3

years

(unconditionally)

3.

MHFC-L1

Feeder,

MHG-35C1,

20E,

20K,

C

I

~

CD

and

all

guns

and

torches



90

days

c )

4.

All

other

Millermatic

Feeders



1

year

5.

Mag-Diesel

engine

on

DEL-200



6

months

C
C)

U

~

6.

All

other

engines



1

year

c

U

C)

Engine

Warranties

are

covered

by

the

engine

manufacturers,

subject

to

their

procedures

and

to

be

handled

C)

through

their

authorized

local

Service

Stations

or

agencies.

No

warranty

will

be

made

in

respect

to

trade

accessories,

such

being

subject

to

the

warranties

of

their

respective

manufacturers.

C

I

U

C)

I

)

-

C)

U

U

C)

MILLER

Electric

Mfg.

Co.

will

not

be

liable

for

any

loss

or

consequential

damage

or

expense

accruing

c

directlyorindirectly

from

the

use

of

equipment

covered

in

this

warranty.

U

U

C

~

U

U

C)

I

This

warranty

supersedes

all

previous

MILLER

warranties

and

is

exclusive

with

no

other

guarantees

or

C

U

U

C)

U

warranties

expressed

or

implied.

c

U

U

C)

_______________________________________________________________

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SECTION

1

-

INTRODUCTION

Rating:

100

PCT.

Duty

Cycle,

dcrp

Wire

Dia.

Cable

And

Hose

Length

Cooling

Method

Net

Weight

Ship

Weight

200

Amperes

.030

To

10

Air

8

lbs.

12

oz.

10

lbs.

5

oz.

With

CO2

.045

Hard

15

Air

11

lbs.

8oz,

13

lbs.

Figure

1-1.

Specifications

1-1.

GENERAL

This

manual

has

been

prepared

especially

for

use

in

familiar.

izing

personnel

with

the

design,

installation,

operation,

main

tenance,

and

troubleshooting

of

this

equipment.

All

informa

tion

presented

herein

should

be

given

careful

consideration

to

assure

optimum

performance

of

this

equipment.

1-2.

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

loss

or

damage

that

may

have

occurred

in

transit

must

be

filed

by

the

purchaser

with

the

carrier.

A

copy

of

the

bill

of

lading

and

freight

bill

willbefurnished

by

the

carrier

on

request

if

occasion

to

file

claim

arises.

When

requesting

information

concerning

this

equipment,

it

is

essential

that

Model

Description

and/or

Stock

Number

and

Serial

(or

Style)

Numbers

of

the

equipmentbesupplied.

1-3.

DESCRIPTION

This

gun

is

designed

specifically

for

use

in

conjunction

with

the

Gas

Metal-Arc

(MIG)

Welding

process.

The

gun

is

shipped

assembled

for

the

specific

wire

size

ordered.

Through

minor

changes

in

parts

the

gun

may

be

used

with

.030, .035.

or

.045

wire.

1-4.

SAFETY

The

following

definitions

apply

to

CAUTION,

IMPORTANT,

and

NOTE

blocks

found

throughout

this

manual:

this

h

eading,

installation,

operating

,

a

nd

main

tenance

procedures

or

practices

will

be

found

that

if

not

carefully

followed

may

create

a

safety

hazard

to

personnel.

fl~ORT~T

Under

this

heading,

installation,

operating,

and

main

tenance

proceduresorpractices

will

be

found

that

if

no,t

carefully

followed

may

result

in

damage

to

equip

meht.

I~..r=~-1

.1

Under

this

heading,

explanatory

statements

will

be

found

that

need

special

emphasis

to

obtain

the

most

efficient

operation

of

the

equipment.

SECTION

2-

INSTALLATION

CAUTION_-~

Prior

to

installing

the

gun,

ensure

t~econtrol/

feeder

and

welding

power

source

are

both

completely

disconnected

from

the

respective

input

electrical

power

supplies.

2-4.

OUTLET

GUIDE

CONNECTION

(Figure

2-1)

Insert

the

outlet

guide

from

the

gun

into

the

outlet

guide

hole

on

the

control/feeder.

Ensure

that

the

flat

surface

on

the

outlet

guide

is

facing

the

securing

screw

on

the

control/

feeder.

Prior

to

securing

the

outlet

guide

in

the

control/

feeder,

ensure

that

the

tip

of

the

outlet

guide

is

1/16

away

from

the

drive

rolls.

2-1.

SHIELDING

GAS

HOSE

CONNECTION

(Figure

2-1)

Secure

the

shielding

gas

hose

connector

in

the

shielding

gas

output

connector

on

the

control/feeder

or

to

whatever

de

vice

that

istobe

used

for

on-off

control

of

the

shielding

gas.

The

shielding

gas

hose

connector

has

right

hand

threading.

2-2.

GUN

SWITCH

CONNECTION

(Figure

2-1)

Insert

the

two

-

prong

plug

from

the

Gun

Switch

fully

into

the

Switch

Control

Receptacle

on

the

control/feeder.

Once

fully

inserted

into

the

receptacle,

rotate

the

plug

as

far

as

it

will

turn

in

a

clockwise

direction;

this

will

lock

the

plug

in

the

receptacle

and

prevent

the

plug

from

coming

out

under

tension.

2-3.

WELD

CABLE

CONNECTION

(Figure

2-1)

Attach

the

weld

cable

from

the

gun

to

the

Weld

Cable

Terminal

on

the

control/feeder

or

to

the

desired

secondary

cable

from

the

welding

power

source.

2-5.

CHANGING

WIRE

SIZES

(Figure

2-1)

Each

time

the

size

of

the

electrode

wire

being

used

is

changed

it

will

be

necessary

to

change

certain

components

so

that

the

holesinthese

components

will

permit

proper

movement

of

the

electrode

wire.

The

following

steps

explain

the

proce

dures

necessary

to

adapt

the

gun

to

either

.030, .035,

or

.045

wire.

U

~OTE

~

U

If

the

gun

is

equipped

for

.030

or

035

wire

and

it

is

desired

to

convert

from

one

of

these

wire

sizes

to

the

other,

only

the

contact

tube

(item

2,

Figure

2-1)

will

have

to

be

changed.

However,

if

the

gun

is

equipped

for

.030

or

.036 wire

and

it

is

desired

to

convert

to

.045

wire

(Or

vice

versa),

allofthe

following

steps

will

haveto

be

performed,

.

OM-1024

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