2500_Users_Manual- - 第164页

2054-2 MAIN PLATE (Underside) BACK OF BASE BOTTOM OF BASE FRONT OF BASE BLACK (HP) GRAY (LP) BLUE RED EXTERNAL INPUT REGULATORS GAUGES REGULATORS AIR CYLINDER (1 of 2) BLOW REGULATOR SOLENOID 8 TO BEAM SOLENOIDS 2 AND 3 …

Preventive

Maintenance

System

Air

Flow

Air

enters

the

2500

through

a

1/4-inch

air

connector

on

the

rear

and

branches

through

a

Y

connection

to

the

low

and

high

air

pressure

regulators

(see

Figure

5-2).

The

air

exits

each

regulator

in

two

ways:

to

the

gauge

(to

display

the

PSI)

and

through

the

2500

as

described

below.

Low

air

pressure

should

be

set

to

30

PSI,

and

high

air

pressure

should

be

set

to

85

PSI.

Solenoids

switch

high

or

low

air

pressure

to

the

beam

to

perform

various

functions,

as

shown

in

the

table

and

as

described

in

the

following

sections.

High

Pressure

Low

Pressure

Beam

vacuum

generators

Lower

beam

to

pick

up

device

Lower

beam

to

release

device

Final

insertion

force

into

Initial

insertion

force

into

programming

programming

module module

Programming

module

Device

blow

off

clamps

Output

tube

air

to

start

device

movement

Low

Air

Pressure

Low

pressure

air

is

routed

from

the

low

pressure

regulator

to

a

solenoid

block

where

it

is

switched

to

either

the

beam

or

the

output

track

(see

Figure

5-2).

Beam

Up/down

This

section

describes

how

the

air

pressure

is

routed

through

channels

inside

the

beam.

Refer

to

Figure

5-16

for

the

location

of

the

beam

solenoids

and

Figure

5-3

for

the

location

of

air

channels

as

you

read

this

section.

After

the

2500

powers

up,

solenoid

4

(beam

up/down)

forces

low

pressure

air

through

an

air

channel

in

the

beam

baffle

plate

from

hole

1

1

to

hole

10,

up

through

the

beam

to

hole

16

and

hole

17,

and

finally

to

the

top

of

the

fixed

piston,

pushing

the

beam

assembly

up

into

the

ready

position.

Low

pressure

air

passes

through

the

beam

and

a

single

air

cap

(cavity),

which

dampens

out

air

spikes

and

is

routed

directly

to

solenoids

4

and

5.

ProMaster

2500

User

Manual

5-9

2054-2

MAIN PLATE (Underside)

BACK OF BASE

BOTTOM OF BASE

FRONT OF BASE

BLACK (HP)

GRAY (LP)

BLUE

RED

EXTERNAL INPUT

REGULATORS

GAUGES

REGULATORS

AIR CYLINDER (1 of 2)

BLOW REGULATOR

SOLENOID 8

TO BEAM

SOLENOIDS

2 AND 3

TO OUTPUT TUBE

PART BLOW IN

HIGH

LOW

Preventive

Maintenance

When

the

beam

lowers,

it

is

driven

down

by

low

pressure

air

routed

through

hole

12.

This

air

enters

the

hi/low

valve

assembly

through

hole

19

and

pushes

the

ball

bearing

up,

sealing

off

hole

21

and

creating

a

path

to

hole

20.

From

hole

20,

the

low

pressure

air

is

forced

to

hole

18,

pushing

down

on

the

fixed

piston

and

lowering

the

beam.

This

air

is

vented

through

exhaust

holes

on

the

bottom

of

the

beam

assembly.

Figure

5-2

High

and

Low

Pressure

Air

Lines

5-10

ProMaster

2500

User

Manual

16

17

4

5

18

20

21

19

11

12

17

18

21

20

19

2387-1

BEAM AIR

CYLINDER

Preventive

Maintenance

Figure

5-3

Label

Application

Chip

Blow-off

Output

Track

Air

When

solenoid

3

is

selected

(see

Figure

5-15),

low

pressure

air

is

passed

to

the

beam

assembly.

When

the

2500

prepares

to

apply

a

label

on

a

device,

the

beam

lowers

(with

low

air

pressure)

the

device

on

the

application

plate,

and

then

solenoid

3

is

turned

off

to

bleed

the

low

pressure

line.

To

prevent

the

device

from

being

skewed

during

label

application,

the

beam

rests

on

the

device

(with

its

own

weight

and

no

air

pressure)

as

it

is

moved

across

the

label.

Devices

are

released

from

the

chuck

tip

when

vacuum

is

turned

off

and

low

air

pressure

is

activated

to

ensure

a

smooth

separation.

Beam

solenoid

5

(blow

off)

is

activated,

allowing

low

pressure

air

into

the

vacuum

chamber.

The

low

pressure

air

does

not

go

through

the

vacuum

venturi

because

the

chamber

is

pressurized

to

30

to

40

PSI.

Instead,

the

air

is

forced

through

the

beam

and

chuck

shaft,

assisting

the

chip

to

separate

from

the

chuck

tip.

Low

pressure

air

is

used

on

the

output

tracks

to

help

devices

enter

the

output

tubes.

When

solenoid

2

is

selected,

low

pressure

air

is

switched

to

both

output

tracks.

An

in-line

valve,

called

the

track

air

adjustment,

is

located

on

the

main

plate

to

the

right

side

of

output

tube

holder

1.

The

air

level

can

be

adjusted

when

the

system

is

reconfigured

between

large

and

small

devices.

ProMaster

2500

User

Manual

5-11