Thermo Centra cl2 User manual

Instruction

Manual

IEC

Centra

CL2

Centrifuges

Cat.

No.426:

120

VAC,

50/60Hz

Cat.

No.427:

240

VAC,

50/60Hz

IM-426

Rev.

10

11

January

2004

Contents

TRTINEOAUCHaNI.....-..

een

3

2.

Installation

rin

5

2.1

Reeeiveithe

URL

ニー

SL

テラ

ミー

ニー

ドー

ンー

ドーーーー

5

2.2

Prepare

the

installation

site...................

των

5

2.3

VerifyPowerConfiguration..........................................

5

24Movingthelnmit.....................................

5

3;

Operar

nn

6

3.1

Warnings

and

Cautions....................

iii

6

3.2

Opening

The

Cover...

His

PNEUS

6

3.3

Rotor

Installation

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

inn

6

3.4

Starting

and

Stopping

à

RUN...

een

6

3.5

Rotor

Removal

ose

one

nesen

enénéce

6

人

7

4.

Applications

4.1

Introduction

4.2

Speed

and

Force

Tables....

4.3

Derating

Tables

for

Dense

Samples

4.4

Chemical

Resistance

Table:

45

DecontaminationTabe.......................................

12

4.6.

ROENoraogra

plise

serseri!

13

5.

Maintenance

iii

een

14

5.1

Care

and

Cleaning.…................................................

14

5.2

Corrosion

Cleaning

Procedure

.

5.3

Storage:

Keep

the

Unit

Dry

5.4

Decontamination

Procedures

5.5

Ggverlnterleek

BYBasS

ss

Er

14

A

져

15

5.7

Brush

Replacement

trae

15

58

Calibration...........................................

e

15

5.9:

Power

Cord

Inspection

snai

rit

15

5.10

Condition

of

Returned

Equipment.............................

15

ο

ος

να

ο

ο ο

ος

ο

15

6.Specifications..........................................

16

ο

μμ

eee

16

7A!

Warnittg:

Message

πμ

μμ

uavescassenes

16

7.2

Error

Codes

een

ené

16

sec

asma

16

7.4

DisassembiyforSemice..........................................

16

O:

DraWiNOS

ο

ας

18

IM-426

Rev.

10

11

January

2004

Page

3

of

34

1.

Introduction

1.1

Product

Description

The

IEC

Centra

CL2

is

a

compact

benchtop

centrifuge

designed

for

multipurpose

use

in

medical,

industrial,

and

scientific

laboratories.

There

are

two

models:

e

Cat.

No.

426:

120

V,

50/60

Hz

e

Cat.

No.

427:

240

V,

50/60

Hz

The

IEC

Centra

CL2

accommodates

a

wide

variety

of

rotors

including

fixed

angle

and

horizontal

(swinging

bucket).

IEC

AeroCarriers™

provide

aerosol

containment

along

with

autoclaveability.

The centrifuge

can

handle

up

to

300

ml

(801

rotor),

and

reach

maximum

speeds

of

up

to

8500

rpn:

(841

fixed

angle

rotor)

and

3900

rpm

(236

horizontal

rotor).

The

system

also

includes

®

a

cover

interlock

for

safety

and

a

'glove-friendly'

membrane

control

panel

with

digital

speed

and

time

displays

*

an

‘At

Speed’

timer

mode

allowing

for

accurate

separations

®

a

continuous

'hold'

mode

2.

Installation

2.1

Receive

the

Unit

All

units

are

shipped

in

protective

packaging.

1.

Follow

the

unpacking

instructions

on

the

carton.

2.

Inspect

the

unit

upon

receipt

and

immediately

file

any

damage

claims

with

the

shipper/carrier.

3.

Complete

and

return

the

postage-paid

warranty

card.

2.2

Prepare

the

installation

site

The

unit

normally

resides

on

a

bench

top.

1.

Place

the

centrifuge

on

a

clean,

dry

surface,

to

make

certain

that

the

suction

feet

at

the

bottom

grip

the

surface

firmly.

Keep

the

area

beneath

the

unit

free

of

debris

and

loose

materials.

/NCAUTION

The

resting

surface

must

be

level,

to

ensure

quiet,

vibration-free

operation.

A

rigid

and

stable

location

is

important.

An

improperly

loaded

centrifuge

may

vibrate

or

move

2.

Locate

the

centrifuge

to

allow

a

clearance

of

8

cm

(3

inches)

on

each

side

and

4

in.

(10.2

cm)

in

the

rear

of

the

unit

for

ventilation.

À

WARNING

International

Electrotechnical

Commission

standard

1010

part

2-20

limits

the

permitted

movement

of

a

laboratory

centrifuge

to

12”

(300

mm)

in

the

unlikely

event

of

a

disruption.

Laboratory

management

procedures

should

require

that

no

person

or

any

hazardous

materials

enter

within

this

boundary

while

the

centrifuge

operates.

IM-426

Rev.

10

11

January

2004

2.3

Verify

Power

Configuration

Verify

that

the

correct

power

cord

and

connector

is

provided

for

your

installation.

1.

Using

a

voltmeter,

measure

the

line

voltage

to

ensure

it

is

within

the

limits

for

your

model.

For

Cat.

No.

426

the

line

voltage

should

be

between

108

and

132

VAC.

For

Cat.

No.

427

the

line

voltage

should

be

between

216

and

264

VAC.

Variations

in

line

voltage

or

frequency

will

affect

the

unit’s

speed

and

acceleration.

2.

The

unit

requires

a

grounded

power

supply

(3-outlet).

If

your

facility

does

not

have

grounded

power

outlets,

arrange

for

proper

grounding.

À

WARNING

ELECTRICAL

HAZARD!

A

Do

not

remove

the

grounding

from

the

centrifuge

power

cord.

Do

not

use

the

bare

wired

power

cord

to

attach

a

power

plug

that

does

not

have

a

grounding

pin.

The

power

cord

provided

with

the

unit

is

correctly

rated

for

the

highest

current

demand.

This

power

cord

should

not

be

interchanged

with

cords

from

equipment

with

lower

current

demand.

Exchange

of

power

cords

between

equipment

may

create

a

fire

hazard.

2.4

Moving

the

Unit

To

move

the

unit

to

a

new

location:

À

WARNING

q

The

unit

can

weigh

up

to

222

Ib.

(101

kg).

Use caution

when

moving

to

avoid

any

injury.

1.

Check

that

the

new

site

meets

the

criteria

in

Section

2.2

before

moving

the

unit.

2.

Before

moving,

unplug

the

centrifuge

and

remove

all

accessories

and

the

rotor.

3.

Position

a

flat

object,

such

as

a

tongue

depressor,

near

a

suction cup

at

the

bottom

of

the

unit.

4.

Lift

up

an

edge

of

the

cup,

and

insert

the

flat

object

far

enough

to

break

the

vacuum

suction

seal.

5.

When

all

four

suction

cups

are

disengaged,

lift

the

unit

from

the

work

surface.

6.

When

the

unit

is

in

its

new

location,

ensure

that

the

suction

cups

adhere

correctly

to

the

work

surface

Page

5

of

34

3.

Operation

3.1

Warnings

and

Cautions

To

Avoid

Electric

Shock:

Plug

the

power

cord

into

a

grounded

outlet.

AWARNING

Never

remove

the

grounding

prong

from

the

A

power

plug,

or

use

any

adapter

which

does

not

complete

the

grounding

circuit.

À

WARNING

Always

unplug

the

power

cord

before

attempting

to

clean

or

service

the

centrifuge.

/NCAUTION

DO

NOT

exceed

maximum

rated

speed

for

each

rotor/

accessory

combination.

Maximum

speeds

can

be

found

in

Section

4.1

Speed

and

Force

Tables.

All

rotors

and

accessories

are

stamped

with

their

cat.

no.for

easy

identification.

/NCAUTION

Samples

of

specific

gravity

higher

than

1.2

require

the

maximum

speed

to

be

derated.

/NCAUTION

Ensure

that

loads

are

properly

balanced

around

the rotor

to

minimize

vibration.

All

Thermo

Electron

accessories

are

stamped

with

their

weight

for

easy

balancing.

/NCAUTION

Do

not

block

the

vents,

otherwise,

airflow

will

be

restricted.

/ACAUTION

Be

sure

the

rotor

and

accessories

are

properly

installed

before

attempting

to

start

a

run.

3.2

Opening

The

Cover

Once

the

red

light

over

the

STOP

button

is

steadily

illuminated

(no

longer

flashing)

press

the

COVER

OPEN

button

to

release

the

interlock

and

allow

the

cover

to

be

opened.

3.3

Rotor

Installation

1.

Check

that

the

RED

light

over

the

STOP

button

is

ON.

This

indicates

that

power

is

on,

the

rotor

is

stopped

and

the

cover

can

be

opened.

2.

Push

the

COVER

OPEN

lever

to

the

right

and

lift

the

cover.

.

Lower

the

rotor

straight

onto

the

shaft.

.

Screw

the

knurled

metal

locking

nut

(clockwise)

onto

the

shaft

to

hold

the

rotor

down

(on

some

rotors,

you

must

remove

any

sample

tubes

first.).

5.

Tighten

the

nut

with

your

fingers;

do

not

use

a

tool.

NOTE:

Rotors

with

or

without

a

keyway

can

be

used

on

the

IEC

Centra

CL2

centrifuge

as

there

is

no

key

on

the

shaft.

ро

Page

6

of

34

3.4

Starting

and

Stopping

a

Run

To

start

a

run:

1.

Use

the

ARROW

buttons

to

set

the

desired

run

time

(O

to

30

minutes)

in

the

TIME

display,

and

the

desired

rpm

in

the

SPEED

display.

2.

Press

the

START

button.

The

green

light

under

the

START

button

will

illuminate,

and

the

time

display

will

begin

counting

down.

The

actual

speed

is

displayed

in

the

SPEED

display.

The

centrifuge

will

run

for

the

set

duration

and

decelerate

to

a

stop.

NOTES:

*

To

terminate

a

run

before

time

expires,

press

the

STOP

button.

T

he

red

light

over

the

STOP

button

illuminates

when

STOP

is

pressed

or

time

expires,

and

it

flashes

until

the

rotor

comes

to

a

stop.

®

The

cover

may

be

opened

when

the

rotor

speed

is

below

20

RPM.

®

The

time

and

speed

settings

cannot

be

changed

during

a

run.

*

A

new

run

cannot

be

started

until

the

rotor

has

come

to

a

complete

stop.

+

For

infinite

spins

(hold

mode),

use

the

arrow

keys

to

scroll

up

past

30

minutes.

The

word

'HOLD'

appears

in

the

display.

Pressing

the

START

button

will

begin

a

run

which

can

only

be

terminated

by

pressing

the

STOP

button.

In

the

hold

mode,

the

timer

counts

up.

+

To select

the

timing

mode,

use

the

arrow

buttons

to

scroll

down

past

O

seconds.

The

letters

'Spd'

or

'Acc'

will

appear.

Press

the

arrow

buttons

to

toggle

between

the

two

timing

modes.

'Spd'

is

the

'At

Speed'

timing

mode

where

the

timer

starts

counting

down

when

rotor

reaches

95%

of

set

speed.

Acc'

is

the

normal

timing

mode

where

the

timer

begins

to

count

down

as

soon

as

the

run

button

is

pressed.

3.5

Rotor

Removal

1.

Remove

any

sample

tubes,

shields and

other

accessories

from

the

rotor.

2.

Unscrew

(counterclockwise)

approximately

one

full

turn

the

knurled

locking

nut.

3.

Place

both

your

thumbs

on

the

knurled

locking

nut

and

grip

the

rotor

with your

fingers.

Push

your

thumbs

down

and

at

the

same

time

pull

the

rotor up

with

your

fingers.

This

should

dislodge

the

rotor

from

the

shaft.

If

unsuccessful,

lightly

tap

the

knurled

metal

locking

nut

with

a

rubber/plastic

mallet

or

other

similar

object.

The

nut

and

the

rotor

can

now

be

removed

from

the

shaft.

IM-426

Rev.

10

11

January

2004

3.6

Balance

A

balanced

load

is

essential

for

all

centrifuges.

An

unbalanced

load

produces

vibration,

and can

damage

the

unit.

ALWAYS

balance

containers

on

opposite

sides

of

the

rotor.

NOTE:

A

2-gram

load

imbalance,

at

a

speed

of

4600

RPM,

imparts

force

equivalent

to

20

pounds

(9.1

kg)

a

rest.

Always

ensure

that

the rotor

is

loaded

symmetrically,

with

a

full

complement

of

accessories,

and

a

full

(or

paired)

set

of

tubes.

Tube

adapters

should

also

be

installed

symmetrically.

Balance

load

within

1

gram

The

rotors

are

dynamically

balanced

at

the

factory.

The

manufacturer

matches

removable

parts

(trunnion

rings,

shields,

buckets,

and

carriers)

to

within

1

gram,

and

stamps

the

weight

on

each

piece.

Check

these

markings,

whenever

you

interchange

parts,

to

ensure

that

opposite

parts

are

matched.

Ensure

that

the

total

weight

of

samples

and

removable

parts,

loaded

in

opposing

positions,

are

equal

in

weight,

to

within

1

gram.

The

position

numbers,

present

on

many

rotors

and

adapters,

identify

opposing

tube

positions.

Opposing

containers

must

be alike

in

shape,

thickness,

and

distribution

of

glass

or

plastic.

This

is

especially

important

for

large

containers.

NOTE:

Swinging

Bucket

Rotors:

Tubes

loaded

into

swinging

bucket

rotors

must

be

symmetric,

around

the

axis

of

rotation.

Verify

this

by

rotating

the

entire

rotor

180°

by

hand.

The

loads

should

be

in

the

same

apparent

positions

(not

mirror

images).

In

addition,

the

loads

within

each

bucket

must,

also,

be

symmetric

around

the

bucket's

pivot

axis.

Verify

this

by

ensuring

that

each

bucket

is

loaded

so

that

it

does

not

tilt

from

the vertical,

when

the

rotor

is

at

rest.

Maintaining

balance

within

each

bucket

ensures

that

the

bucket

and

the

tubes

swing

out

to

horizontal,

when

the rotor

reaches

operating

speed,

applying

centrifugal

force

toward

the

bottom

of

the

tubes.

Failure

to

achieve

full

swing-out

causes

vibration

and

premature

wear

of

the

rotor

and

the

motor.

Samples

of

like

(similar)

specific

gravities

may

be

processed

in

the

same

run,

provided

that

the

samples

of

the

same

type

are

balanced

around

the

rotor,

as

though

they

were

the

only

pairs

in

the

rotor.

/NCAUTION

Do

not

exceed

maximum

rated

speed

for

each

rotor/

accessory

combination.

Maximum

rated

speeds

can

be

found

in

Section

4.2

-

Speed

And

Force

Tables.

Rotor

Balance

Load

tubes

in

the

following

manner:

IM-426

Rev.

10

11

January

2004

1.

Load

four

tubes

at

positions:

3, 6,

10,

13

or

2, 5, 9,

12

or

1,

4,

8,

11.

2.

Load

six

tubes

at

positions:

6, 7,

3,

13,

14,

10

or

5, 7,

2,

12, 14,

9

or

1,

7, 4,

8,

14,

11

3.

Loading

an

odd

number

of

tubes

is

not

recommended.

Avoiding

Vibration

All

centrifuges

have

critical

speeds

at

which

vibration

occurs.

As

the

speed

increases

beyond

the

critical

speed,

vibration

will

cease.

This

inherent

condition

also

occurs

during

deceleration.

An

imbalanced

load

intensifies

these

critical

vibrations.

You

should

avoid

running

the

centrifuge

at or

near

its

“critical

speed”

to

avoid

excessive

vibration.

Page

7

of

34

4.

Applications

4.1

Introduction

This

section

describes

the

use

of

specific

rotors

and

accessories.

More

detailed

information

is

shipped

with

the

rotor

or

accessory

itself.

This

section

contains

five

reference

sections:

®

Speed

and

Force

Tables

®

Derating

Table

for

Dense

Samples

e

Chemical

Resistance

Table

*

Decontamination

Table

*

Nomograph

/NCAUTION

Do

not

exceed

maximum

rated

speed

for

each

rotor/accessory

combination.

Maximum

rated

speeds

can

be

found

in

Section

4.2

-

Speed

And

Force

Tables.

Relative

Centrifugal

Force

(RCF

or

G-force)

at

a

given

speed

varies

with

the

rotor,

and

with

the

distance

away

(rotating

radius)

from

the

shaft

of

the

centrifuge

(center

of

rotation).

The

rotating

radius

is

measured

to

the

furthest

inside

tip

of

the

tube,

away

from

the

centrifuge

shaft.

The

Speed

and

Force

Tables

indicate

the

maximum

speed

and

RCF

that

the

centrifuge

can

achieve

with

various

rotor/accessory

combinations.

The Derating

Table

specifies

reductions

in

maximum

RPM,

when

spinning

samples

with

specific

gravity

above

1.2.

Use

of

any

tube

above

its

rated

RCF

can

cause

tube

cracking.

To

avoid

this,

compare

the

G

forces,

specified

in

the

Speed

and

Force

Tables,

with

the

ratings

for

the

tubes

that

you

are

using.

If

the

tubes

are

not

rated

for

the

force

that

the

centrifuge

will

apply,

look

up

their

reduced

g

force

rating

and

enter

it

on

the

control

panel.

Corrosive

Solvents

Your

centrifuge

is

made

of

materials

designed

to

resist

immediate

attack

from

most

laboratory

chemicals.

Prolonged

exposure

should

be

avoided,

by

immediately

removing

the

chemical

from

rotor

or

assembly.

Rotors

and

accessories

placed

in

the

chamber

are

made

of

a

variety

of

materials,

including

aluminum

and

polypropylene.

The

Chemical

Resistance

Table

shows

the

suitability

of

each

material

with

different

classes

of

reagents.

Section

5.2

describes

how

to

clean

and

remove

corrosion

from

the

chamber,

rotors,

and

accessories.

Follow

these

instructions

and

clean

spills

promptly

to

minimize

the

effect

of

corrosive

chemicals

and

to

avoid

expensive

repairs.

Page

8

of

34

IM-426

Rev.

10

11

January

2004

4.2

Speed

and

Force

Tables

Rotor

215

4-Place

Swinging

Bucket

Rotor

Tube

Maximum

= i

Shield

or

=

No.

x

Vol.

(ml)

Description

RPM

/

RCF

Radilis

Tr

Ring

Carrier

Adapter

Cushion

8x50ml

Falcon/Corning

conical

plastic

-

8х315

Corning

8300-50

conical

glass

3100

1510

14.1

4x326

8x320

E

571

8x15ml

Falcon/Corning

conical

plastic

8x1106

570

4x50ml

Falcon/Corning

conical

plastic

-

4x315

Corning

8300-50

conical

glass

3350

1750

13.9

4x325 4x320

-

571

4x15ml

Falcon/Corning

conical

plastic

4x1106

570

Falcon/Corning

conical

plastic

3175

1750

15.4

4x350

4x323

-

315

4x50ml

sealed

- - -

Falcon/Corning

conical

plastic

3350

1750

13.9

4x325

4x320

4x1106

4x668

4x15ml

sealed

Falcon/Corning

1106

4x571

4x10-15ml

sealed

Vacutainer

16x100-125mm

3175

1710

15.2

4x350

4x7323

4x668

4x7ml

sealed

Vacutainer

13x100

4x1105

4x571

12x10ml

16x100mm

34

č

4x1013

0

12x7mi

16x75mm

50

1725

12.9

x10

57

ты

mm

3450

1700

12.8

4x366

|

4x1018

E

16x5ml

13x75mm

567

20x5ml

12x75mm

40

1

b.

4x369

20x3ml

10x75mm

00

1975

na

*

Rotor

221

6-Place

Fixed

Trunnion

Swinging

Bucket

Tube

Maximum

>.

i

Shield

or

i

No.

x

Vol.

(ml)

Description

RPM

/

RCF

Radius

ile

King

Carrier

Adapter

Cushion

6x15ml

Falcon/Corning

6x12.5ml

Kimble

45170-125

OR

ЕВ

io

fixed

ως

=

668

6x10mi

Corning

8080-10

3500

1890

13.8

6x356

669

Rotor

236

4-Place

Aerocarrier

Horizontal

Swing-out

Rotor

Tube

Maximum

= E

Aero

E

No.

x

Vol.

(ml)

Description

RPM

/

RCF

pe

Rio

Carrier

Adapter,

ος.

4x50ml

.

3400

1950

15:0

4x2091S

8x1

5mi

Falcon/Corning

8x10ml

Kova/Urisystem

ο.

is

ní

16x10ml

Vacutainer

16x100mm

16x7ml

Vacutainer

13x100mm

3700

2200

14.3

fixed

4x2093S

=

Hemogard

Vacutainer

13x100mm

28x7ml

Vacutainer

16x75mm

28x5ml

Vacutainer

13x75mm

3900 2150

12.7

4x2094S

Hemogard

Vacutainer

13x75mm

Rotor

801

6-Place

45

degree

Fixed

Angle

Rotor

Tube

Maximum

Radi

Shield

Adapt

Cushi

No.

x

Vol.

(ml)

Description

RPM

/

RCF

LS

le

aptos

LEON

6x50ml

Falcon/Corning

conical

plastic

=

6x315

Corning

8300-50

conical

glass

3900

2050

12.1

6x305

=

571

6x15ml

Falcon/Corning

conical

plastic

6x1106

570

6x50ml

Falcon/Corning

conical

plastic

=

6x315

Corning

8300-50

conical

glass

4500

2450

10.8

6x320

=

571

6x15ml

Falcon/Corning

conical

plastic

6x1106

570

Rotor

804S

4-Place

40

degree

Fixed

Angle

Rotor

Tube

Maximum

E 3 :

No.

x

Vol.

(mi)

Description

RPM

/

RcF

|

Pedus

|

Shield

|

Adapter

|

Cushion

4x50ml

Falcon/Corning

conical

plastic

-

315

Corning

8300-50

conical

glass

4200

2270

11.5

323

-

571

4x15ml

Falcon/Corning

conical

plastic

6x1106

570

4x60ml

Corning

8540-60

2500

1000

14.3

4x341

=

572

IM-426

Rev.

10

11

January

2004 Page

9

of

34

Rotor

809

12-Place

45

degree

Fixed

Angle

Rotor

Tube

Maximum

= x >

No.

x

Vol.

(ml)

Description

RPM

/

RCF

|

Radius

|

Shield

|

Adapter

|

Cushion

12x15ml

Falcon/Corning

conical

plastic

3800

2150

13.3

668

Corning

8080-15

conical

glass

3800

2050

12.7

302 570

126xDevice

Amicron

Filtration

Device

3900

2050

13.4

-

12x10ml

Corning

8080-10

4500

2310

10.2

12x356

>

570

12xDevice

Filtron

or

Millipore

Devices

4500

2490

11.0

=

Corning

8080-10

4100

2270

12.1

12x668

vagoni

17x102mm

4100

2120

11.3

dea

570

Rotor

841

12-Place

45

degree

Fixed

Angle

Rotor

Tube

Maximum

Radius

User

No.

x

Vol.

(ml)

Description

RPM

/

RCF

Adapter

12x1.5-2.0ml

8500 4680

5.8

=

12x0.7ml

8500 4770

5.9

5763

12x0.5ml

microtubes

8500

3960

4.9

12x0.4ml

8500 4680

5.8

5764

12x0.25ml

8500

3630

4.5

4.3

Derating

Tables

for

Dense

Samples

The

Speed

and

Force

Tables

list

the

maximum

speed

for

each

rotor/adapter

combination

for

the IEC

Centra

CL2

Series

Centrifuges.

These speeds

are

specified

for

samples

whose

specific

gravity

is

not

greater

than

*

1.2

for

swinging

bucket

rotors

*

1.5

for

angle

rotors

For

denser

samples,

the

maximum

specified

speed

in

RPM

is

reduced

(derated)

by

a

factor

from

the

table

below:

Derating

Factor

for:

Specific

Gravity

Swinging

Bucket

Fixed

Angle

1.2

1.000

1.3

-960

1

1.4

.925

1.5.

„894

1.6

«866

„967

+7

„839

939

1.8

816

912

1.9

.794

.888

2.0

.774 .866

2.1

.755

-844

2.2

.738 .825

2.3

„721

«807

2.4

„707

.790

2.5

.692 .774

2.6

.678

.758

2.7

.666 .744

2.8

.654

-731

2.9

.642

719

3.0

.632 „707

Derating

Example:

A

rotor

rated

for

4,000

RPM

used

with

samples

with

a

specific

gravity

of

1.4,

cannot

spin

faster

than

3,700

RPM.

(4,000

x

.925

=

3,700)

Specific

gravities

greater

than

3.0:

This

table

is

based

on

the

formula:

v(s,/S,)

Use

the

same

formula

to

compute

derating

factors

for

specific

gravities

greater

than

3.0.

®

So

is

the

maximum

specific

gravity

allowed

before

derating

(1.2).

®

S,

is

the

actual

specific

gravity

of

the

sample.

/NCAUTION

Do

not

exceed

the

rated

speed

or

specific

gravity.

Higher

speeds

or

specific

gravities

will

impose

unnecessary

wear

on

the

centrifuge

and

can

cause

rotor

failure.

Wear

and

damage

caused

in

this

manner

are

not

covered

under

warranty.

Page

10

of

34

IM-426

Rev.

10

11

January

2004

4.4

Chemical

Resistance

Table

The

centrifuge,

rotors

and

accessories

are

comprised

of

made

of

materials

that

are

designed

to

resist

attack

from

most

laboratory

chemicals.

For

your

convenience,

the

chemical

resistance

table

below

shows

the

suitability

of

various

materials

with

different

classes

of

reagents.

NOTE:

Refer

to

the

cleaning

section

for

information

on

cleaning

and

removing

corrosion

from

various

parts.

Clean

spills

promptly

to

minimize

the

effect

of

corrosive

chemicals

and

avoid

expensive

repairs.

Plastic

Metal

Other

3N37AHLIATOd

q

ヨ

ldIdOW

(@NIYT30)

YINATOdONOH

171397

(@NO9739)

HINATOdOI

TVLIIV

3NIHALSA1Od

WNINVLIL

INNNINNIV

卫

x

m

=

で

ов

레더

E

π]ο

m|x

11%

г

三

|

三

Ko)

고

<

É

©

YINOTIVATOd

ALVNOSYVOA1Od

ヨ

N

ヨ

AdOHd

人

1Qd

] ヨ

ヨ

1S

SS

ヨ

1NIV1S

3ZNOY8

ISINVOVIN

WNISINDVW

43914

2I1ON

ヨ

Hd

e

or

weal

cids*,

strong

or

conc.

p

ses

sters

5.

rocar

,

aromatic

‘oca

,

halogenat

etones

ng

Agents,

strong

*For

Oxidizing

Acids,

see

"Oxidizing

Agents,

strong”.

Classification

of

Resistance

=

EXCELLENT

G

=

GOOD

F

=

FAIR

N =

NOT

RECOMMENDED

IM-426

Rev.10

11

January

2004

Page

11 of

34

4.5

Decontamination

Table

Compatible

Processes

For

Decontamination

Sterilization

Methods

Plastic

Metal

Other

r >

3 2 |

2

ñ 8 S

5

で

a

в

ЗЕ

ВЕ

|

2

s$|

8

|

3

|

人

|

68595

z

|

5

F

sl

o

2|

8

<|

6

2

c|

5

Y|8|

Dlog

228

É 2 2

|

D

|

E

の

|

= o

2

|=

드

m

5/8)

2] 3)

5/22

28/83]

29/5)

2/212)

Ba]

Ble)

se} se]

2

> E

ni

モエ

|

己

避

28

m =

o <

S|

<

고

z

n

e

m|S|

2

οι

σε

2

al

8 э

=

Pla

D

3

m =

м

|=

に

=

δι

m

그

5 m

πι

9

= A E N

5

고

m

고

m

Е

D

Mechanical

Autoclave*

5

Μ

υ

5

Μ

υ

S $

$

U S S

9

S

$

5

$

м

$

м

Ethylene Oxide Gas

5 S $ $

$

$.

5 5 5 $ 5 5

95

S

$

U

5

5 $

Dry

Heat

(2Hrs.

@

160°C)

U

U U U

U U U U υ

υ S

S

U

5 S U

U U U U

Chemical

Ethanol

$ S $

5

υ $ 5 S

U

M

5

$ S

5 5 5

$ 5 S 5

40%

Formalin

5

5 5 $

U S S S S U

S

S S

S

U S

S

Methanol

S

M

S S

M

S

S S

U

M

S

S S

S S U

S

2-Propanol

S

S S

S

M

S

U

S S

S

S S

M

S S 5

5

-5%

Sodium

Hypochlorite*

*

$

$ 5 5

U

$

U U υ

$ 5

м

U

U 5 υ 5

5

м

3%

Hydrogen

Peroxide

5 E

S

Ss

5 S

M

S

U

$ E

5

5 5

U 5

5

5 5

M

100%

Hydrogen

Peroxide

$

s 5 S 5

υ υ

υ

υ 5

5

$

5

υ

υ 5 5

υ

5%

Phenol

Solution

M

U U

S

U

υ

Μ

υ

Μ

Μ Μ

Μ Μ Μ

Μ

υ

5

S

U

*For

Oxidizing

Acids,

see

"Oxidizing

Agents,

strong”

À

WARNING

Autoclaving

121°

C

for

20

min.

@

2

ATM

(15

PSIG)

**

1

to

10

Dilution

of

Household

Bleach

S =

SATISFACTORY

M

-

MARGINAL

U

-

UNSATISFACTORY

This

chart

describes

the

material

compatibility

of

various

sterilization

methods.

It

does

not

specify

the

adequacy

of

sterilization.

Refer

to

the

Chemical

Resistance

Table

on

the

for

material

compatibility

during

centrifugation.

IM-426

Rev.

10

11

January

2004

Page

12

of

34

4.6

RCF

Nomograph

Rotating

Radius

(centimeters)

Ta,

+

8

3

一

上

十

-7

A

6

2—

5

IM-426

Rev.

10

11

January

2004

Using

the

RCF

Nomograph

n

Relative

Centrifugal

Force

(gravities)

To

determine

the

relative

centrifugal

.

force

(ref),

place

a

straightedge

on

the

È

nomograph

connecting

the

known

speed

(rpm)

and

the

known

rotating

radius.

The

point

at

which

the

straightedge

intersects

the

ref

axis

is

the

force.

For

example,

if

the

rotating

radius

is

10

cm

and

the

speed

is

3,000

rpm,

the

relative

centrifugal

force

is

1,000

xg

(gravity).

If

the

force

and

the

radius

are

known,

the

corresponding

speed

can

be

determined.

To

Calculate

RCF

АСЕ

=

.00001118

хгх

№

АСЕ

=

relative

centrifugal

force

(gravities)

r

=

rotating

radius

(centimeters)

N

=

rotating

speed

(rev.

per

min.

or

rpm)

30,000

20,000

10,000

5,000

№

©

o

100

50

20

10

TT

|

T

| T

JM

還

II

に

テー

T

TT

|

oi

emip

20,000

15,000

10,000

6,000

4,000

3,000

2,000

1,000

500

200

Page

13

of

34

Speed-

Revolutions

per

minute

5.

Maintenance

5.1

Care

and

Cleaning

®

Keep

the

centrifuge

clean

to

ensure

good

operation

anc

to

extend

its

life.

+

Clean

the

sample

chamber,

rotor,

and

lid,

at

the

end

of

each

work

day,

and

immediately

after

any

spill.

Use

a

damp

sponge,

warm

water,

and

a

mild

liquid

detergent

suitable

for

washing

dishes

by

hand,

such

as

Ivory“

liquid.

Do

not

use

caustic

detergents

or

detergents

tha:

contain

chlorine

ions.

These

attack

metals.

Remove

stubborn

stains

with

a

plastic

scrub

pad.

Do

not

use

steel

wool,

wire

brushes,

abrasives,

or

sandpaper

as

they

create

corrosion

sites.

Never

pour

water

directly

into

the rotor

chamber.

Scrub

the

rotor’s

tube

cavities

with

a

stiff

test

tube

brush

that

has

end

bristles

and

a

non-metallic

tip.

Afte’

cleaning,

dry

each

part

with

a

clean

absorbent

towel.

/NCAUTION

In

the

case

of

glass

breakage,

be

careful

to

remove

ALL

particles

of

glass

from

the

unit!

In

particular,

be

sure

thoroughly

scrub

adapters

and

cushions

with

a

wire

brush

or

replace

these

items

as

glass

shards

embedded

in

the

adapters

can

cause

further

breakage.

5.2

Corrosion

Cleaning

Procedure

The

rotors

and

structural

accessories

are

finished

to

give

maximum

resistance

to

corrosion.

To

maximize

the

life

of

the

unit,

continually

inspect

the rotor

cavities

for

corrosion

especially

if

you

use

chloride

ion

solutions

such

as

sodium

chloride

(saline),

and

sodium

hypochlorite

(household

bleach),

because

these

solutions

attack

most

metals.

Clean

the

rotor,

rotor

chamber,

and

accessories

(particularly

the

sample

compartments

and

bucket

cups)

thoroughly

after

each

exposure.

Inspect

all

surfaces

unde

bright

light

for

corrosion.

Be

aware

that

small

crevices

grow

deeper,

eventually

resulting

in

system

failure.

If

you

see

any

corrosion,

remove

it

immediately,

using

the

following

procedure:

1.

Follow

the

cleaning

procedure

at

the

start

of

this

section.

2.

Soak

the

product

in

mild

hand

dish-washing

detergent

and

scrub

the

product

thoroughly

with

a

stiff

test

tube

brush.

The

brush

should

have

end

bristles

and

a

non-

metallic

tip.

3.

Soak

the

product

in

clear

warm

water

for

a

minimum

of

an

hour.

4.

Rinse

the

product

in

warm

water

then

in

distilled

water.

5.

Dry

the

product

thoroughly

with

a

clean

absorbent

cloth.

/NCAUTION

If

this

procedure

does

not

remove

the

corrosion,

discontinue

use

of

the

product

and

inform

technical

service.

Page

14

of

34

5.3

Storage:

Keep

the

Unit

Dry

Store

parts

on

a

soft

surface

to

avoid

damage.

Rotors

and

other

parts

should

be

clean

and

dry.

Store

them

open

to

the

air,

not

in

a

plastic

bag,

so

any

residual

moisture

evaporates.

Face

the

parts

upward

to

avoid

moisture

retention

in

the

cavities.

5.4

Decontamination

Procedures

AWARNING

If

tube

breakage

occurs

releasing

toxic,

infectious,

pathogenic,

or

radioactive

material

into

the

unit,

decontaminate

the

chamber.

Rotors

have

sealed

containers

that

provide

aerosol

containment

and,

if

used

as

directed,

keep

spillage

confined.

If

breakage

occurs

it

may

be

sufficient

to

only

decontaminate

the

sealed

carriers.

The

Decontamination

Table

in

the

lists

the

sensitivity

of

various

materials

to

common

sterilization

procedures.

When

using

a

1-to-10

dilution

of

household

bleach

(sodium

hypochlorite)

to

decontaminate

metal

rotors

or

accessories,

follow

decontamination

by

the

corrosion

cleaning

procedure

(5.2)

since

chloride

ions

attack

most

metals.

Always

decontaminate

for

the

minimum

recommended

time.

If

you

observe

corrosion,

remove

it

as

described

earlier,

discontinue

use

of

the

method

and

use

an

alternate

decontamination

procedure.

Polypropylene

sealed

carriers

can

be

autoclaved.

Remove

any

sample

tubes

before

autoclaving

unless

they

are

completely

full

of

sample.

Remove

caps,

stoppers,

and

other

tube

closures

before

autoclaving

to

keep

the

tubes

from

collapsing

under

pressure.

Autoclave

the rotor

and

accessories

at

121°

C

@

15

psig

for

20

minutes.

Do

not

stack

polypropylene

rotors

during

this

process.

After

cooling,

perform

a

normal

cleaning

operation

as

described

above.

Repeated

autoclaving

seriously

degrades

the

performance

of

polycarbonate

sealing

covers.

5.5

Cover

Interlock

Bypass

The

cover

will

remain

locked

if

power

fails.

If

you

need

to

remove

samples

from

the

unit

before

power

is

restored,

use

the

cover

interlock

bypass

after

the

rotor

has

come

to

a

stop.To

bypass

the

cover

interlock:

1.

Unplug

the

centrifuge.

2.

Locate

the

hidden

plastic

plug

underneath

the front

ledge

of

the

cabinet.

3.

Use

a

screwdriver

to

pry

out

and

remove

the plug.

Pull

the

attached

cord

to

release

the

cover

interlock.

.

Replace

the

plug

in

the

hole.

À

WARNING

Do

not

perform

this

operation

routinely.

The

centrifuge’s

cover

interlock

provides

operator

safety.

It

allows

the

cover

to

be

opened

promptly,

whenever

rotation

has

stopped.

sa

IM-426

Rev.

10

11

January

2004

5.6

Fuses

are

located

internally

within

the

centrifuge.

They

should

only

be

replaced

by

qualified

service

personnel.

1.

Remove

all

rotor

and

accessories

from

the

chamber.

2.

Gently

tilt

the

unit

onto

its

side

and

remove

the

four

he»:

head

screws

which

secure

the

baseplate.

3.

Unscrew

and

remove

the

four

rubber

feet

and

lift

the

baseplate

off.

4.

The

fuse(s)

is

mounted

to

the

cabinet

housing.

Replace:

fuse(s)

with:

For

100/120

VAC

1

-4A,

.25x1.25

in.part

no.

40340

For

220/240

VAC

2

-

2A,

.25x1.25

in.part

no.

40794

5.7

Brush

Replacement

lt

is

important

to

check

the

brushes

periodically

since

damage

to

the

motor

can

occur

if

the

brush

is

allowed

to

wear

down

to

the

spring.

À

WARNING

DISCONNECT

THE

POWER

CORD

BEFORE

REMOVING

THE

BRUSHES.

1.

Remove

all

rotor

and

accessories

from

the

chamber.

2.

Gently

tilt

the

unit

onto

its

side

and

remove

the

four

screws

which

secure

the

baseplate. The

brush

caps

are

located

on

either

side

of

the

motor

housing.

Unscrew

each

cap

with

your

fingers

(or

use

a

small

flat

screwdriver)

and

remove

the

brushes.

There

are

two

black

caps

which

can

be

removed

from

the

housing

to

allow

use

of

a

large

screwdriver.

3.

Measure

the

length

of

the

brushes

and

replace

both

brushes

if

either

one

is

less

than

1/4

of

an

inch

long.

4.

Reinstall

all

parts

removed.

/NCAUTION

WHEN

REINSTALLING

INSPECTED

BRUSHES

When

brush

replacement

is

not

required

it

is

important

that

a

brush

be

inserted

in

the

same

position

as

it

was

removed.

The

trailing

edge

of

the

brush

must

be

positioned

properly.

The

trailing

edge

may

be

identified

by

the

presence

of

a

dark

deposit

of

carbon

along

that

side.

NOTE:

New

brushes

may

require

a

burn-in

period

of

up

to

a

half

hour.

5.8

Calibration

The

speed

sensor used

in

the

IEC

Centra

CL2

requires

no

calibration

however

you

should

verify

its

speed

once

every

24

months.

This

can

be

done

by

using

an

optical

tachometer

through

the

clear

plastic

viewport

in

the

lid.

Notify

technical

service

if

this

measurement

indicates

instrument

failure

5.9

Power

Cord

Inspection

Inspect

the

power

cord

every

four

months

for

signs

of

wear.

Refer servicing

to

qualified

personnel

only.

Replace

power

cord

with

Thermo

Electron

part

number

44392

only.

IM-426

Rev.

10

11

January

2004

5.10

Condition

of

Returned

Equipment

Obtain

a

return

goods

authorization

(RGA)

before

returning

equipment

to

the

manufacturer.

The

RGA

paperwork

includes

a

Certificate

of

Decontamination

for

you

to

sign.

It

indicates

that

you

have

performed

the

proper

steps

for

decontaminating

the

unit.

À

WARNING

All

returned

units

must

be

decontaminated,

free

of

radioactivity,

and

free

of

hazardous,

infectious,

pathogenic,

or

toxic

materials.

All

return

equipment

shipments

will

be

refused

until

the

signed

certificate

is

received.

You

must

prepay

transportation

to

the

service

depot.

5.11

Warranty

information

is

provided

on

the

warranty

card

supplied

with

the

centrifuge.

Page

15

of

34

6.

Specifications

8,500

RPM

(Angle

Rotor

No.

841)

RetationiSpasd

3,900

RPM

(Horizontal

Rotor

No.

236)

4775

xg

(Angle

Rotor

No.

841)

Maximum

RER

2200

xg

(Horizontal

Rotor

No.

236)

Maximum

Capacity:

400

mL

(8x50

mL)

Sound

Level 65

dB(A)

Timer

O

to

30

minutes

0 to

1

minute

by

5

seconds

1

to

5

minutes

by 15

seconds

5

to

30

minutes

by

1

minute

HOLD

mode

up

to

99

min.,

99

sec.

Range

Increments

Accuracy

+1.0

%

Speed

Range

1000

to

8500

rpm

by

100

RPM

Accuracy

+100

RPM

Power

120

VAC

+

10%,

60

Hz

(Cat.

No.

426)

生

Power

Requirement’

|

240

VAC

+

10%,

60

Hz

(Cat.

No.

427)

Heater

Output

a

175

watts

(600

Btu/hr.)

(typical)

Dimensions

Cover

Closed:

11

in.

(28

cm)

Height

Cover

Opened:

24

in.

(61

em)

Width

13

in.

(34

cm)

Depth

16

in.

(40

cm)

Unit

Weight

24

Ib.

(11

kg)

Shipping

Weight

29

Ib.

(13

kg)

Specifications

subject

to

change

without

notice.

7.

Service

7.1

Warning

Messages

A

Warning

Message

indicates

improper

operation

and

may

be

cleared

by

opening

the

lid

and

correcting

the

problem.

Display

Meaning

The

cover

was

not

properly

closed

when

was

opened

during

a

run.

Lid

the

start

button

was

pressed,

or

the

cover

PFL

run.

Power

to

the

centrifuge

was

lost

during

a

7.2

Error

Codes

Error

Codes

indicate

a

malfunction

of

the

centrifuge.

They

are

cleared

by

disconnecting

and

reconnecting

power

to

the

centrifuge.

If

an

Error

Code

or

Warning

Message

persist,

service

may

be

reguired.

Display

Meaning

Tachometer

signal

not

present

during

a

run.

Er1

decelerating

for

more

than

2

seconds,

or

speed

is

over

9000

RPM

at

any

time.

Er2

Speed

is

500

RPM

over

set

speed

and

not

Er

10

the

maximum

limit

(94

volts).

The

motor

voltage

was

detected

to

be

over

Page

16

of

34

7.3

Troubleshooting

Centrifuge

won't

start:

1.

If

the

rotor

stopped

indicator

(red

LED)

is

lit,

there

is

power

to

the

centrifuge.

If it

is

not

lit,

unplug

the

centrifuge

and

check

the

fuse(s).

2.

Spin

the

rotor

by

hand

to

see

that

the

“rotor

stopped

indicator”

begins

flashing,

and

listen

for

the latch

to

engage.

This

will

verify

the

function

of

the

tachometer

and

latch.

7.4

Disassembly

for

Service

ΑΝΝΑ

ING

SHOCK

HAZARD.

The

unit

uses

AC

power,

and

some

of

the

service

procedures

require

operation

with

panels

removed,

exposing

power

lines.

This

introduces

the

risk of

electric

shocks.

Service

should

be

performed

by

qualified

personnel

only.

Do

not

touch

exposed

wires

without

first

unplugging

the

unit.

ZKCAUTION

STATIC

ELECTRICITY

DAMAGE.

The

circuit

boards

contain

electronics

that

can

be

damaged

by

static

electricity.

Persons

doing

extensive

maintenance

on

the

circuit

boards,

or

removing

individual

components

from

the circuit

boards,

should

be

grounded

(such

as

by

wearing

a

wrist

strap.)

When

shipping

a

circuit

board,

always

enclose

it

in

a

static-protective

bag.

1.

Unplug

the

centrifuge

from

its

power

source.

2.

Remove

the

rotor

and

accessories

from

the

chamber.

3.

Gently

tilt

the

unit

onto

its

side

and

remove

the

four

hex

head

screws

which

secure

the

baseplate.

4.

Unscrew

and

remove

the

four

rubber

feet

and

lift

the

baseplate

off.

5.

With

the

cover

open,

remove

the

four

screws

(two

on

each

side)

from

the

control

tower. Gently

pull

the

tower

outward

without

removing

it

completely

(there

are

wires

connecting

it

to

the

chamber).

6.

To

remove

the

guard

bowl,

locate

and

remove

the

9

screws

at

the

base

of

the

centrifuge

chamber.

To

remove

the

cover

from

the

guard

bowl,

pry

off

one end

cap

from

the

hinge

pin.

Slide

the

out.

Interlock

The centrifuge

has

a

safety

interlock

which

prevents

the

cover from

being

opened

unless

the

rotor

is

turning

20

RPM

or

less.

There

is

a

switch

in

the

interlock

assembly

which

senses

that

the

cover

is

closed

and

locked.

It

is

a

normally

open

switch

and

closes

when

the

solenoid

is

in

the

locked

position.

When

pressed,

the

STOP/COVER

OPEN

button

releases

the

safety

interlock

by

powering

the

solenoid

through

the

Interlock

PC

board.

®

The

solenoid

coil

has

a

resistance

of

approximately

80

Q.

Power

to

the

solenoid

should

be

approximately

170

VDC.

Voltage

is

provided

by

the

Interlock

PCB

when

the

STOP/COVER

OPEN

button

is

pressed.

IM-426

Rey.

10

11

January

2004

e

To

measure

the

voltage,

disconnect

the

solenoid

at

JP4

and

read

across

the

BRN

and

YEL

leads.

Verify

the

function

of

the

switch

using

an

ohmmeter.

e

To

replace

the

interlock,

remove

the

four

screws

which

secure

the

latch

assembly

to

the

cabinet.

Snip

the

wire

ties

in

order

to

disconnect

all

leads

to

the

latch

assembly.

Make

note

of

wiring

before

disconnecting.

Reconnect

wires

as

noted,

or

using

the

diagram

provided

at

the

end

of

this

manual.

The

slots

in

the

latch

assembly

mounting

bracket

are

for

proper

positioning.

Raise

or

lower

the

height

of

the

assembly

so

that

when

the

cover

is

closed

completely

switch

SW1

(WHT

and

WHT/BLK

leads)

is

engaged

by

the

roll

of

the

solenoid

plunger.

A

run

may

not

be

started

until

the

switch

is

engaged.

Timer

PCB

The

IEC

Centra

CL2

has

a

Timer/Display

PCB

mounted

behind

the

membrane

control

panel.

The

timer

PCB

contains

the

EPROM

and

delivers

power

to

the

motor.

To

replace

it,

the

tower

must

first

be

removed

(see

See

7.4

“Disassembly

for

Service”

on

page

16).

The

PCB

is

secured

to

the

tower

by

four

screws

/ACAUTION

STATIC

DAMAGE.

To

prevent

damage

to

the

PC

board,

always

use

a

static

protective

device

(such

as

wriststrap)

when

handling

or

servicing.

Motor

The

IEC

Centra

CL2

uses

an

AC

series

wound

drive

motor.

The

motor

is

not

a

singular

replaceable

component,

as

the

base

housing

of

the

centrifuge

serves

as

the

motor

housing.

The

motor

is

comprised

of

an

armature

(includes

bearings),

field,

brushes,

brush

holders,

brush

caps,

brush

leads,

and

a

magnetic

rotor.

All

of

these

parts

are

available

separately

(as

well

as

motor

bearings)

for

repair

purposes.

®

When

isolated,

the

armature

resistance

should

be

approximately

6.3

Q.

This can

be

measured

by

disconnecting

the

RED

and

WHT

motor

leads

and

measuring

the

resistance

across

them.

When

isolated,

the

field

resistance should

be

approximately

10

Q.

It

can

be

measured

by

disconnecting

the

Red

and

BLK

motor

leads

(BLK

at

BR1).

*

To

access

the

motor,

remove

the

baseplate

(See

7.4

“Disassembly

for

Service”

on

page

16)

and

then

the

top

cap

located

in

the

guard

bowl.

Two

Phillips

head

screws

secure

the

top

cap.

When

removing

the

top

cap,

take

care

not

to

lose

the

pre-load

washer

which

rests

on

top

of

the

upper

bearing.

e

To

replace

the

armature,

the

brushes

must

be

removed

(See

5.7

“Brush

Replacement”

on

page

15),

and

the

magnetic

rotor

taken

off

of

the

motor

shaft.

Magnetic

rotor

removal

requires

that

the

Interlock

PCB

be

removed

(see

instructions

above).

It

is

secured

with

Loctite®

454.

Use

care

not

to

break

the

magnetic

rotor.

Once

brushes

and

the

magnetic

rotor

have

been

removed,

the

armature

simply

lifts

out

of

the

housing.

The

field

rests

inside

the

housing.

To

remove

it,

simply

disconnect

the

three

motor

leads

(RED,

WHT,

BLK)

and

lift

it

out.

Located

below

the

field

are

the

two

set

screws

which

secure

the

brush

holders

in

place.

To

replace

or

adjust

a

IM-426

Rev.

10

11

January

2004

brush

holder,

loosen

the

set

screw.

This

allows

the

brush

holder

to

be

moved

or

removed.

The

set

screw

may

be

accessed

through

the

two

holes

in

the

field

through

which

the

top

cap

mounting

screws

secure

the

top

cap

to

the

base.

The

Interlock

PCB

in

the

IEC

Centra

CL2

disables

power

to

the

interlock

during

rotation. This PC

board

is

mounted

below

the

motor.

To

sense

rotation,

it

uses

a

Hall

effect

sensor

to

pickup

pulses

form

a

magnetic

disk

mounted

on

the

motor

shaft.

ZAXCAUTION

STATIC

DAMAGE.

To

prevent

damage

to

the

PC

board,

always

use

a

static

protective device

(such

as

wriststrap)

when

handling

or

servicing.

To

replace

the

PCB,

disconnect

the

wiring

harness

and

remove

the

four

mounting

screws

which

secure

the

PCB

to

the

base

housing.

Take

care

not

to

damage

the

speed

sensor

when

lifting

the

PCB

off

of

the

housing.

Page

17

of

34

8.

Drawings

Drawing

No.

Description

426

CL2

Assembly

and

Parts

List

10944

Wiring

Diagram

10895

Timer/Display PCB

Schematic

44416

Timer/Display

PCB

Layout

PL-44416

Timer/Display

PCB

Parts

List

10875

Interlock

PCB

Schematic

44566

Interlock

PCB

Layout

44566

Parts

list

Interlock

PCB

Parts

List

Page

18

of

34

IM-426

Rev.

10

11

January

2004

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Page

220134

Thermo Centra CL2 User manual

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