Miller Electric A1D-4RV Specifications download pdf (Page 14)

4.

Cut

off

any

portion

of

the

free

end

of

the

wire

which

is

not

straight.

If

necessary,

straighten

wire

to

remove

cast.

Be

sure

that

the

cut

end

is

free

from

rough

sur

faces

to

permit

proper

feeding.

5.

Feed

the

wire

through

the

inlet

wire

guide

(and

inter

mediate

guide,

if

applicable),

past

the

drive

rolls,

and

on

into

the

outlet

wire

guide.

Feed

approximate

ly

4

in.

(102

mm)

of

wire

into

the

outlet

wire

guide.

6.

Pivot

the

pressure

gear

assembly(ies)

closed

mak

ing

sure

the

teeth

on

the

pressure

gear

mesh

with

the

teeth

on

the

drive

gear.

The

welding

wire

must

also

be

in

the

grooves

of

the

drive

rolls.

7.

Pivot

the

pressure

adjustment

knob(s)

until

the

washer(s)

on

the

pressure

adjustment(s)

is

seated

on

top

of

the

cover(s).

8.

Turn

the

pressure

adjustment

knob(s)

in

clockwise

direction

until

the

drive

rolls

are

tight

against

the

welding

wire.

Do

not

overtighten.

Further

adjust

ment

to

attain

desired

clamping

pressure

can

be

made

after

the

welding

power

source

and

the

weld

control

are

put

into

operation.

9.

Energize

the

welding

power

source.

IMPORTANT:

See

robot

Owner~s

Manual

for

wire

inch

ing

procedures.

SECTION

6-

MAINTENANCE

IMPORTANT:

Every

six

months

inspect

the

labels

on

this

unit

for

legibility.

All

precautionary

labels

must

be

maintained

in

a

clearly

readable

state

and

replaced

when

necessary~

See

Parts

List

for

part

number

of

pre

cautionary

labels.

a

WARNING:

ELECTRIC

SHOCK

can

kill;

MOVING

PARTS

can

cause

Injury;

WELDING

WIRE

can

cause

puncture

wounds;

HOT

SURFACES

can

burn

skin.



Do

not

touch

live

electrical

parts.



Disconnect

input

power

to

the

drive

motorand

shut

down

the

welding

power

source

and

robot

before

inspecting

or

servicing.



Allow

components

to

cool

before

servicing.

6-1.

INSPECTION

AND

UPKEEP

Usage

and

shop

conditions

will

determine

the

frequency

and

type

of

maintenance.

Inspect

equipment

as

follows:

1.

Make

sure

welding

power

source

and

robot

is

shut

down.

2.

Inspect

gun

and

outlet

cable

for

broken

areas,

cracks

and

loose

parts;

tighten,

repair,

and

replace

as

required.

3.

Carefully

remove

any

weld

spatter

or

foreign

matter

which

may

accumulate

around

the

nozzle

orifice.

Use

a

hardwood

stick,

never

a

metal

tool.

4.

Repair

or

replace,

as

required,

all

hose

and

cable;

give

particular

attention

to

frayed

and

cracked

insu

lation

and

areas

where

it

enters

equipment.

5.

Remove

grease

and

grime

from

components;

mois

ture

from

electrical

parts

and

cable.

6.

Blow

out

the

gun

wire

guide

liner

with

compressed

air

when

changing

wire.

This

will

remove

any

metal

chips

and

dirt

that

may

have

accumulated.

6-2.

CLEANING

OF

DRIVE

ROLLS

Occasionally

it

will

become

necessary

to

clean

the

wire

groove

on

the

drive

rolls.

This

cleaning

operation

can

be

performed

with

a

wire

brush.

a

WARNING:

Read

and

follow

safety

Informa

tion

at

beginning

of

entIre

SectIon

6-1

before

proceeding.

To

clean

the

wire

grooves,

disconnect

input

power

from

unit

before

removing

the

drive

roll(s)

and

see

Sections

3-3

and

3-4

for

removal

and

installation

instructions.

a

WARNING:

HIGH

ROTATIONAL

SPEED

may

cause

damage

to

drive

rolls

and

injure

per

sonnel.



Do

not

allow

drive

rolls

to

rotate at

high

speed

if

compressed

air

is

used

for

cleaning

the

drive

roll

assembly.

IMPORTANT:

Failure

to

properly

maintain

the

drive

rolls

can

result

in

a

buildup

of

wire

particles

which

will

de

crease

the

efficiency

of

the

wire

feeding

operation.

6-3.

BRUSH

INSPECTION

&

REPLACEMENT

(Fig

ures

6-1

and

6-2)

The

brushes

should

be

inspected

periodically

depend

ing

on

usage

and

conditions.

a

WARNING:

Read

and

follow

safety

Informa

tion

at

beginning

of

entire

Section

6-1

before

proceeding.

1.

Shut

down

unit

and

associated

equipment.

2.

Open

brush

cap

by

sliding

screwdriver

under

catch

and

lifting.

Remove

brush

cap.

3.

Grasp

spring

retaining

bracket

with

long-nose

pli

ers.

4.

Push

spring

retaining

bracket

in

slightly

and

move

towards

brush.

This

should

release

the

spring

as

sembly

and

it

can

be

removed.

OM-1580

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