Jouan C3i User manual

CENTRIFUGECENTRIFUGE

C3C3

ii

/CR3/CR3

ii

SERSER

VIVI

CECE

MAMA

NUNU

ALAL

CAREFULLY READ THIS MANUAL BEFORE OPERATING YOUR INSTRUMENT.CAREFULLY READ THIS MANUAL BEFORE OPERATING YOUR INSTRUMENT.

INFORMATION CONTAINED IN THIS DOCUMENT IS THE PROPERTY OF JOUAN ;INFORMATION CONTAINED IN THIS DOCUMENT IS THE PROPERTY OF JOUAN ;

IT MAY NOT BE DUPLICATED OR DISTRIBUTED WITHOUT THE OWNER’S AUTHORIZATION.IT MAY NOT BE DUPLICATED OR DISTRIBUTED WITHOUT THE OWNER’S AUTHORIZATION.

CENTRIFUGECENTRIFUGE

C3C3

ii

/CR3/CR3

ii

SERSER

VIVI

CECE

MAMA

NUNU

ALAL

89000832-a89000832-a

CAREFULLY READ THIS MANUAL BEFORE OPERATING YOUR INSTRUMENT.CAREFULLY READ THIS MANUAL BEFORE OPERATING YOUR INSTRUMENT.

INFORMATION CONTAINED IN THIS DOCUMENT IS THE PROPERTY OF JOUAN ;INFORMATION CONTAINED IN THIS DOCUMENT IS THE PROPERTY OF JOUAN ;

IT MAY NOT BE DUPLICATED OR DISTRIBUTED WITHOUT THE OWNER’S AUTHORIZATION.IT MAY NOT BE DUPLICATED OR DISTRIBUTED WITHOUT THE OWNER’S AUTHORIZATION.

CENTRIFUGECENTRIFUGE

C3C3

ii

/CR3/CR3

ii

SERSER

VIVI

CECE

MAMA

NUNU

ALAL

89000832-a89000832-a

CC

33

ii

-M-M

REVISION STATUSREVISION STATUS

II

NN

DD

EE

XX

DD

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TT

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ii

-M-M

WARRANTYWARRANTY

Subject to the dSubject to the d

ue ue

obob

sese

rvance rvance

of of

any instany inst

allall

atiati

on, opeon, ope

ratirati

ng ng

or mor m

aintaint

enaena

nce nce

inin

structistructi

ons, we ons, we

warrawarra

nt tnt t

hat we wilhat we wil

ll

at our option replace, or repair free of charge, or credit the purchaser with the full invoice price of any goods orat our option replace, or repair free of charge, or credit the purchaser with the full invoice price of any goods or

parts of goods of our own manufacture proved to be defective owing to faulty workmanship or materials,parts of goods of our own manufacture proved to be defective owing to faulty workmanship or materials,

provided that we are notified in writing of the alleged defect within 12 months of the date of despatch of theprovided that we are notified in writing of the alleged defect within 12 months of the date of despatch of the

goodgood

s and s and

thth

e e

goodgood

s are s are

returned returned

to us prompto us promp

tltl

y on dy on d

ii

scovery of tscovery of t

he he

alal

ll

egeg

ed ed

dede

ff

ect wiect wi

th detaith detai

ll

s of ts of t

he he

mannermanner

and circumstanand circumstan

ces ces

ii

n whin whi

ch they are ch they are

alal

ll

egeg

ed ed

to havto hav

e e

bebe

come come

dede

ff

ectiecti

ve.ve.

RR

eplaced geplaced g

oods beoods be

come our pcome our p

roperty.roperty.

Goods Goods

not manufnot manuf

actured actured

by us by us

are are

onlonl

y guaray guara

ntnt

eeee

d d

to tto t

he ghe g

uarantee guarantee g

ii

ven to us bven to us b

y the actual y the actual

manufmanuf

acturers.acturers.

Our obOur ob

lili

gations igations i

n ren re

spespe

ct of ct of

dede

ff

ecec

titi

ve gve g

oodood

s ses se

t out t out

abab

ove arove ar

e ee e

xclusixclusi

ve and ve and

expexp

rere

ssly issly i

n ln l

ieu of ieu of

all all

other terother ter

ms,ms,

warranties and conditions, expressed or implied (including without prejudice to the generality of the foregoing)warranties and conditions, expressed or implied (including without prejudice to the generality of the foregoing)

warranties and conditions or merchantability and fitness for a particular purpose all of which terms warrantieswarranties and conditions or merchantability and fitness for a particular purpose all of which terms warranties

and conditand condit

ii

ons are hereons are here

by expby exp

ressly exclressly excl

udeude

d.d.

It is a condition of sale that the purchaser agrees to keep us indemnified at all times in respect of all actionsIt is a condition of sale that the purchaser agrees to keep us indemnified at all times in respect of all actions

proceproce

eded

ii

ngs, clngs, cl

aims and deaims and de

mands whatsoever mands whatsoever

whiwhi

ch may bch may b

e e

made made

by aby a

ny tny t

hihi

rd rd

party against party against

us fus f

or any loss oror any loss or

damage howsoever arising (including with prejudice to the generality of the foregoing loss or damage arisingdamage howsoever arising (including with prejudice to the generality of the foregoing loss or damage arising

out of out of

thth

e nee ne

gligli

gege

nce of ounce of ou

r er e

mployees or mployees or

ageage

ntnt

s) whis) whi

ch may bch may b

e ce c

aused aused

by gby g

oods sold to toods sold to t

he phe p

urchaser, and aurchaser, and a

ll

costs and ecosts and e

xpensexpense

s incurred s incurred

by by

us in connus in conn

ectiecti

on therewiton therewit

h.h.

All liability for loss of profit, consequential loss, or any other loss whatsoever suffered by the purchaserAll liability for loss of profit, consequential loss, or any other loss whatsoever suffered by the purchaser

howsoever arising (including without prejudice to the generality of the foregoing loss arising out of ourhowsoever arising (including without prejudice to the generality of the foregoing loss arising out of our

neglinegli

gege

nce of ounce of ou

r ser se

rvantrvant

s or ags or ag

ents) ients) i

s heres here

by eby e

xprexpre

sslssl

y excluy exclu

dede

d.d.

In the event that purchaser makes any claims for such or any loss or damage against any of our employees orIn the event that purchaser makes any claims for such or any loss or damage against any of our employees or

agents, it shall pay to us the amount (if any) recovered from such employee or agent and an amount equal to theagents, it shall pay to us the amount (if any) recovered from such employee or agent and an amount equal to the

legal costs (on a full indemnity basis) incurred by such employee or agent in defending or compromising thelegal costs (on a full indemnity basis) incurred by such employee or agent in defending or compromising the

purchasepurchase

r's cr's c

ll

aim)aim)

..

CC

33

ii

-M-M

CHACHA

PTER PTER

1 - INT1 - INT

RODROD

UCTUCT

ION ION

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

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

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

. .. .

1-11-1

1.1.1.1.

Purpose Purpose

. . . . . .

..

1-11-1

1.2.1.2.

PresePrese

ntatntat

ion ion

. . . .

..

1-11-1

1.3.1.3.

SpecSpec

ifif

icaticat

ions ions

. . . . . .

. .. .

1-21-2

1.3.1.3.

1.1.

DiDi

meme

nsions and wensions and we

ight ight

. . . . . .

. .. .

1-21-2

1.3.2.1.3.2.

ElEl

ee

ctrical spectrical spe

cifcif

icatiicati

ons ons

. . . .

. .. .

1-21-2

1.3.3.1.3.3.

PerPer

ff

ormorm

ance ance

. . . . . .

. .. .

1-21-2

1.4.1.4.

II

nstalnstal

ll

atiati

on pron pr

oceoce

durdur

e e

. . . .

..

1-31-3

CHAPTER CHAPTER

2 - THEOR2 - THEOR

Y OF OPEY OF OPE

RATION RATION

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

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

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

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

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

..

2-12-1

2.1.2.1.

Description Description

. . . .

. .. .

2-12-1

2.2.2.2.

ComCom

ponepone

nt lnt l

ay-out ay-out

. . . .

..

2-12-1

2.3.2.3.

MM

otor control otor control

prpr

inin

ciple ciple

. . . .

. .. .

2-62-6

2.3.1.2.3.1.

II

ntrodntrod

uction uction

. . . .

. .. .

2-62-6

2.3.2.2.3.2.

The moThe mo

tor tor

. . . . . .

..

2-62-6

2.3.3.2.3.3.

Power Power

controcontro

l l

. . . . . .

..

2-72-7

2.4.2.4.

ElEl

ecec

tronitroni

cs - structure cs - structure

. . . .

..

2-82-8

2.4.1.2.4.1.

II

ntrodntrod

uction uction

. . . .

. .. .

2-82-8

2.4.2.4.

2.2.

MM

icroproicropro

cece

ssor + ssor +

powepowe

r pcr pc

b b

. . . .

..

2-92-9

2.4.3.2.4.3.

II

mbmb

alance alance

sese

nsor nsor

. . . .

..

2-102-10

2.4.4.2.4.4.

Tacho sTacho s

enen

sor sor

. . . . . .

..

2-102-10

2.2.

4.4.

5.5.

TT

emperatuemperatu

re senre sen

sor sor

(CR(CR

33

ii

) )

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

. . . . . . . . . .

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

. . . . . . . . . .

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

. . . . . . . . . .

. . . . .. . . . .

2-102-10

2.2.

4.4.

6.6.

RR

efef

riri

geratigerati

on conton cont

rol board (CRrol board (CR

33

ii

) )

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

. . . . . . . . . .

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

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

. . . . . . . . . .

. . . . .. . . . .

2-102-10

2.4.7.2.4.7.

II

npnp

ut - output ut - output

. . . . . . . . . .

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

. . . . . . . . . .

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

. . . . . . . . . .

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..

2-112-11

CHAPTER CHAPTER

3 - DIAG3 - DIAG

NOSTICNOSTIC

S AND REPAS AND REPA

IRS IRS

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

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

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. . . . .. . . . .

3-13-1

3.1.3.1.

II

ntroduction ntroduction

. . . .

..

3-13-1

3.2.3.2.

FunctFunct

ional ional

test test

. . . .

..

3-13-1

3.2.1.3.2.1.

EPREPR

OM versOM vers

ion ion

. . . . . .

. .. .

3-13-1

3.2.2.3.2.2.

Test modTest mod

e e

. . . . . .

..

3-13-1

3.3.3.3.

FaulFaul

t codet code

s s

. . . .

. .. .

3-53-5

3.4.3.4.

Troubleshooting chart Troubleshooting chart

. . . .

..

3-63-6

CHAPTER CHAPTER

4 - RE4 - RE

PLACEMEPLACEME

NT PROCNT PROC

EDURES EDURES

. . . . . .

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. . . . . .

. . . . . . . .

. . . . . .

. . .. . .

4-14-1

4.1.4.1.

MM

otor reotor re

placeplace

meme

nt nt

. . . .

..

4-14-1

4.4.

1.1.

UU

nrefnref

riri

geratgerat

ed model (ed model (

C3C3

ii

) )

. . . . . .

..

4-14-1

4.4.

1.1.

2.2.

RR

efef

riri

geratgerat

ed ed

model (model (

CRCR

33

ii

) )

. . . . . .

. .. .

4-24-2

4.24.2

..

II

mbmb

alal

ance dance d

etector repetector rep

ll

acemacem

ent ent

. . . .

..

4-34-3

4.34.3

..

RR

epep

ll

acemacem

ent of ent of

thth

e lie li

d lock assembd lock assemb

ll

y y

. . . .

. .. .

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4.44.4

..

LL

ii

d lock d lock

assembassemb

ll

y element replacemey element replaceme

nt nt

. . . .

..

4-44-4

4.4.4.4.

1.1.

LL

id lid l

ock microswitock microswit

ch rech re

placeplace

meme

nt nt

. . . .

..

4-44-4

4.4.4.4.

2.2.

LL

id lid l

ock reock re

placeplace

meme

nt nt

. . . .

. .. .

4-44-4

4.4.4.4.

3.3.

LL

ock solenoid microswitock solenoid microswit

ch rech re

placeplace

meme

nt nt

. . . .

. .. .

4-44-4

4.4.4.4.

4.4.

SolSol

enoid renoid r

epep

ll

aceace

meme

nt nt

. . . .

. .. .

4-54-5

4.54.5

..

PowPow

er super sup

ply ply

rack reprack rep

ll

acemacem

ent ent

. . . .

. .. .

4-54-5

4.4.

5.5.

1.1.

RR

ack replack repl

acement acement

ff

or tor t

he C3he C3

ii

. . . . . . . . . .

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

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

. . .. . .

4-54-5

4.4.

5.5.

2.2.

RR

ack replack repl

acement facement f

or tor t

he CRhe CR

33

ii

. . . . . . . . . .

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

. . . . . . . . . .

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

. . . . . . . . . .

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

. . . . . . . . . .

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

. .. .

4-64-6

4.4.

5.5.

3.3.

RR

efef

riri

geratigerati

on board repon board rep

ll

acement (acement (

CRCR

33

ii

) . . . . . . . . . ) . . . . . . . . .

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

. . . . . . . . . .

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

. . . . . . . . . .

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

. .. .

4-64-6

CONTENTSCONTENTS

C

3

i

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4.6

.

El

ectroni

c b

oard r

ep

l

acem

ent

. .

4-7

4.6.

1.

M

icropro

ce

ssor +

powe

r pc

b

. .

.

4-7

4.6.2.

Di

sp

lay bo

ar

d

. . .

.

4-8

4.7.

K

eyb

oard

re

place

me

nt

. .

.

4-8

4.8

.

Gas sp

rin

g re

placeme

nt

. .

.

4-8

4.

8.

1.

Gas s

pri

ng repl

acement

on

t

he C3

i

. . . . . .

. . . . .

. . . . . .

. . . . .

. . . . . .

. . . . .

. . . . . .

. . .

4-8

4.

8.

2.

Gas spri

ng repl

acement

on t

he CR

3

i

. . . . . .

. . . . .

. . . . . .

. . . . .

. . . . . .

. . . . .

. . . . . .

. .

4-9

4.9.

Tacho re

place

me

nt

. .

.

4-9

4.10.

EPR

OM re

plac

em

e

nt

. . .

. .

4-10

4.11.

L

id re

place

me

nt

. . .

4-10

4.

12

.

R

ef

ri

gerat

i

on grou

p re

pai

rs (CR

3

i

)

. . . . . .

. . . . .

. . . . . .

. . . . .

. . . . . .

. . . . .

. . . . . .

. . . . .

. . . . . .

4-11

4.12.1.

R

efrige

ra

ti

on g

roup

re

plac

e

me

nt . . . . .

. . .

.

4-11

4.12.

2.

Cond

ense

r com

pone

nts rep

l

ace

me

nt

. . .

. .

4-12

4.13

Mot

or c

he

cking

. . .

4-12

4.1

4

Chec

ki

ng and m

ain

tenance of

th

e ce

nt

ering group

. .

4-1

3

CHA

PTER

5 - CH

ECK

S, AD

JUST

MENT

S, CA

LIB

RAT

ION

. . . . . .

. . . . . . .

. . . . . .

. . . . . . .

. . . . . .

. . . . . . .

.

5-1

5.1.

I

mb

alance ad

j

ustment

. .

5-1

5.

2.

T

emperat

ur

e sen

so

r ca

l

i

brat

i

on

(C

R

3

i

) . . . . . .

. . . . . .

. . . . .

. . . . . .

. . . . .

. . . . . .

. . . . .

. . . . . .

. .

5-2

CHAPTER

6 - SPAR

E PARTS

- DIAG

RAMS . . . . . .

. . . . . .

. . . . . . .

. . . . . .

. . . . . . .

. . . . . .

.

6.1

6.1.

Ge

ner

al

. .

.

6-1

6.2

.

M

oto

r

. .

.

6-2

6.3.

A

U

T

O-L

OCK

system

. . .

. .

6-3

6.4

.

L

ock

. .

.

6-4

6.5.

Feed

er

gr

oup

. .

6-5

6.

6

.

R

ef

ri

gera

t

i

on

gro

up (

CR

3

i

)

. . . . .

. . . . . .

. . . . .

. . . . . .

. . . . .

. . . . . .

. . . . .

. . . . . .

. . . . .

. . . . . .

. .

6-6

6

.

7

.

C o

n

d e n

s

e r

g r

o

u

p

(

C R

3

i

)

. . . . . .

. . . . .

. . . . . .

. . . . .

. . . . . .

. . . . .

. . . . . .

. . . . .

. . . . . .

. .

6-7

APPENDI

X A - RE

COMMENDE

D LIST O

F TOOL

S

. . . . . . .

. . . . . .

. . . . . . .

. . . . . .

. . . . . . .

. . . . . .

A-1

APP

ENDI

X B - EL

ECTR

ICA

L DI

AGR

AMS

. . . . . . .

. . . . . .

. . . . . . .

. . . . . .

. . . . . . .

. . . . . .

B-1

C

3

i

-M

1 - 1

1

.

1

.

P

U

R

P

O

S

E

This manual contains maintenance instructions intended for use by a qualified maintenance or service

technician. It is organized to provide maintenance personnel with basic data on the theory of operation to

assist in troubleshooting. Moreover, it outlines parts replacement and calibration procedures for putting

the ce

ntri

f

uge

s b

ack int

o se

rvice.

Should a specific maintenance problem arise which is not covered in this manual, please ask the

authorized se

rvice org

anizat

ion

in

your are

a f

or assistance, or contact our af

ter sales d

ep

artme

nt

:

JOUAN SA

AFTER SALES SERVICE

C.P. 3203, 44805 SAINT-HERBLAIN CEDEX - FRANCE

Tel.

+3

3 (0) 2 40 16 80 00 - Fax : +33 (0) 2 40 94 70 16

Telex : 711062 JOUAN NT

J

O

U

A

N

L

T

D

J

O

U

A

N

G

m

b

H

M

e

r

l

i

n

W

a

y

,

Q

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r

y

H

i

l

R

o

a

d

K

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p

e

l

e

n

s

t

r

a

s

e

2

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S

T

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,

D

E

R

B

Y

S

,

D

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7

4

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2

0

8

U

N

T

E

R

H

A

C

H

I

N

G

-

G

E

R

M

A

N

Y

T

e

l

.

(

0

1

5

)

9

4

7

9

8

9

T

e

l

.

:

(

0

8

9

)

6

1

4

0

3

8

F

a

x

:

(

0

1

5

)

9

4

7

0

8

0

F

a

x

:

(

0

8

9

)

6

1

3

0

8

7

JOUAN INC.

Delivery address : 110-B Industrial Drive, WINCHESTER, VA 22602 - U.S.A

Posta

l ad

d

re

ss

: P.O. B

ox 2

716, WINCHES

TER

, V

A

22604

-9879

- U

.S.A

Tel. (540) 869 8623 - Fax : (540) 869 8626 - Toll

f

re

e

: (800) 662 7477

1.2. PRESENTATION

The C3

i

and CR3

i

(refrigerated) centrifuges are instruments designed for laboratory use. Using relative

ce

ntri

f

uge

f

orce

(R

CF) all

ows e

l

em

ents of dif

f

er

ent d

ensity t

o b

e

se

pa

rated

.

The rotor i

s the main l

oad

;

a swin

g-out de

sign al

l

ows a hi

ghe

r load than does an ang

l

e d

es

ign.

The l

arg

er

th

e

rotor diameter is,

th

e higher

th

e

l

oad

can b

e

and thus t

he slower the spe

ed

wi

l

l be.

The R

CF i

s d

irectl

y pr

opo

rti

onal t

o the r

adius of sedime

ntat

ion and to the sq

uare

of

the sp

ee

d.

The gas used in the refrigeration system (CR3

i

) is R

134a, wi

thout

CFC, re

comm

end

ed

b

y the d

irecti

ve for

pr

otecti

on of

the ozone

l

aye

r.

1

I

N

T

R

O

D

U

C

T

I

O

N

C

3

i

-M

1 - 2

1.

3.

SP

EC

IF

IC

A

TI

ON

S

1.3.1. DIMENSIONS AND WEIGHT

D

i

m

e

n

s

i

o

n

s

(

H

x

W

x

D

)

C

3

i

:

3

7

2

x

4

0

x

4

9

5

m

C

R

3

i

:

37

5 x

57

5 x

60

5 m

m

P

a

c

k

e

d

(

H

x

W

x

D

)

C

3

i

:

6

0

x

6

1

0

x

5

4

0

m

C

R

3

i

:

59

0 x

72

0 x

71

0 m

m

W

e

i

g

h

t

-

u

n

c

r

a

t

e

d

/

c

r

a

t

e

d

C

3

i

:

4

0

k

g

/

5

2

k

g

C

R

3

i

:

7

2

k

g /

8

5

k

g

1.3.2.

ELECTR

ICAL SPECI

FICATI

ONS

Mai

ns

sup

ply

220/240

V

A

C

50

Hz

C3

i

:

1

7

5

7

0

C

R

3

i

:

1

7

5

7

0

3

M

a

i

n

s

u

p

l

y

1

2

0

V

A

C

6

0

H

z

C

3

i

:

1

7

5

7

0

1

C

R

3

i

:

1

7

5

7

0

4

M

a

x

p

o

w

e

r

C

3

i

:

5

0

W

C

R

3

i

:

8

0

W

A

v

e

r

a

g

e

p

o

w

e

r

C

3

i

:

3

5

0

W

C

R

3

i

:

5

0

W

R

e

f

r

i

g

e

r

a

t

i

o

n

C

R

3

i

:

2

3

5

W

1.3.

3.

PERF

ORM

ANC

E

M

a

x

s

p

e

d

S

w

i

n

g

-

o

u

t

:

4

0

r

p

m

(

C

3

i

)

A

ng

le

:

14

000

rp

m

Swi

ng-out :

4 100 rpm

(CR

3

i

)

M

a

x

R

C

F

S

w

i

n

g

-

o

u

t

:

3

9

3

4

x

g

(

C

3

i

)

A

ng

le

:

18

407

x

g

Swi

ng-out :

3 082 rpm

(CR

3

i

)

M

a

x

c

a

p

a

c

i

t

y

S

w

i

n

g

-

o

u

t

:

4

x

2

8

0

m

l

A

n

g

l

e

:

6

x

1

0

m

l

Microprocessor controlled

D

i

s

p

l

a

y

H

i

g

h

v

i

s

i

b

i

l

i

t

y

d

i

g

i

t

a

l

d

i

s

p

l

a

y

M

e

m

o

r

y

s

i

z

e

5

p

r

o

g

r

a

m

s

,

d

i

r

e

c

t

a

c

e

s

P

r

o

g

r

a

m

p

r

o

t

e

c

t

i

o

n

R

e

c

a

l

k

e

y

l

o

c

k 

S

p

e

d

R

a

n

g

e

5

0

t

o

1

4

0

r

p

m

S

t

e

p

1

0

-

1

0

r

p

m

A

c

u

r

a

c

y

± 2

0

r

p

m

T

i

m

e

r

R

a

n

g

e

3

0

s

e

c

t

o

9

m

i

n

+

h

o

l

d

p

o

s

i

t

i

o

n

S

t

e

p

3

0

s

e

c

t

o

1

m

i

n

A

c

e

l

e

r

a

t

i

o

n

r

a

t

e

s

5

B

r

a

k

i

n

g

r

a

t

e

s

5

T

emp

erature

(CR

3

i

)

R

a

n

g

e

-

9

°

C

t

o

+

4

0

°

C

S

t

e

p

1

°

C

A

c

u

r

a

c

y

±

1

.

5

°

C

T

y

p

i

c

a

l

p

e

r

f

o

r

m

a

n

c

e

4

°

C

a

t

4

0

r

p

m

,

(

4

x

2

8

0

m

l

s

w

i

n

g

-

o

u

t

)

1°C at 14 000 rp

m, (20 x 1.5 ml angle)

M

a

x

i

m

u

m

d

e

n

s

i

t

y

1

.

2

g

/

c

m

3

M

aximum

ene

rg

y

14

400

J

C

3

i

-M

1 - 3

1.4

.

INS

TA

LL

AT

ION PRO

CE

DU

RE

The environment must not

b

e in a dusty room or cor

rosive e

nvi

ronme

nt.

The be

nch top must b

e of a rigi

d co

nstructi

on cap

ab

l

e o

f

supp

orti

ng the we

ight of

the ce

nt

rif

uge

.

IMPORTANT : at least two people are required to lift the centrifuge from the palette and place it on the

bench.

WA

R

NI

NG :

The re

ar p

ane

l

of

the instrume

nt must be

at l

e

ast 30

cm from the

wall

s to all

ows ho

t ai

r co

ming

f

rom the condenser to escap

e.

C

3

i

-M

2 - 1

2.1. DESCRIPTION

The microprocessor system which controls the C3

i

or CR3

i

ce

nt

rif

uge

s e

nsures

the op

er

ati

on of t

he

following major elements :

-

M

anagement of

t

he ope

rat

i

ng modes

-

Gene

rati

on of

al

t

ernati

ng curre

nt

ampli

tu

de

and f

req

uency

-

A

djust

ab

l

e compone

nt

s f

or t

he motor

spe

ed se

rvo

-

M

anage

ment of

th

e acce

l

erati

on and braki

ng

prof

i

l

e/rates

-

M

anage

ment of

th

e temp

era

tu

re r

eg

ul

ati

on (CR

3

i

)

-

M

anage

ment of

th

e saf

ety devi

ces :

.

L

id

lock

.

Z

ero sp

ee

d de

t

ecti

on

.

Imbalance detection

.

M

otor overtemp

era

tu

re

de

tect

i

on.

-

M

anage

ment of

f

aul

t diagnosi

s.

2.2

.

CO

MP

ON

EN

T LAY

-O

UT

The inpout and control devices are located on the front panel and comprise a membrane keyboard and

three

digit

al displays.

Everything is controlled by a 16 bit microprocessor. The control program of the centrifuge is stored in an

EPROM.

Data are conveyed into a dynamic RAM and are kept even when the power is down, thanks to an internal

battery, which supplies power.

2

TH

EO

R

Y O

F O

PE

RA

TI

O

N

C

3

i

-M

2 - 2

FIG. 2.1 - CR3i FUNCTIONAL PRESENTATION

FLEXIBLE KEYBOARD

AND DISPLAY

USER

INTERFACE

TEMPERATURE (CR3i)

COMPRESSOR (CR3i)

BOWL (CR3i)

POWER RACK AND

FILTERS

MOTOR SUPPLY

SPEED

IMBALANCE

MOTOR

TEMPERATURE

SWITCH

SOLENOID

LOCK ASSEMBLY

CONTROL

SYSTEM

C

3

i

-M

2 - 3

ROTOR

MOTOR CHAMBER SEAL

LID/BOWL SEAL

MOTOR

STABILIZER

SUSPENSION

IMBALANCE SENSOR

LID

GAS SPRING

LID HINGE

POWER INPUT RACK

CENTRIGUGE BODY

CENTRIFUGE BOWL

LOCKING SYSTEM

COMPRESSOR (CR3i)

FRAME

MOTOR FIXING BOLTS

MICROPROCESSO

R +

POWER

PCB

DISPLAY ASSEMBLY

FRONT PANEL

KEYBOARD

FIG. 2.2 - CR3i EXPLODED VIEW

C

3

i

-M

2 - 4

FIG. 2.3 - COMPONENTS OF THE C3i

1.

P

ow

er suppl

y rac

k

2.

I

mbal

an

ce

sen

so

r

3.

I

nduct

i

on

mot

or

4.

Cent

ri

f

ugat

i

on c

hamber b

owl

5.

L

i

d

l

ock sol

enoi

d

6.

D

i

spl

ay as

sembly

and k

eyboard

7.

M

i

cropro

cesso

r/

power pcb

8

.

Ga

s s

pri

n

g

1.

M

ai

n sock

et and f

use carrier

2.

F

ast-

on conn

ecti

on st

rip

3.

B

raki

ng resi

st

ance

4.

D

C t

ran

f

ormer

5.

Gro

un

d/

E

art

h

6.

M

ot

or eart

hi

ng react

or

7.

M

ain

s f

i

l

ter

8

.

R

a c

k 

FIG. 2.4 - POWER SUPPLY RACK

C3i

C

3

i

-M

2 - 5

FIG. 2.5 - COMPONENTS OF THE CR3i

1.

Cool

i

ng f

an /

condenser

2.

I

mbal

an

ce

sen

so

r

3.

I

nduct

i

on

mot

or

4

.

C o

m p

r e s

s o

r

5.

L

i

d

l

ock sol

enoi

d

6.

D

i

spl

ay

assembly

keyboard

7.

M

i

cropro

cesso

r/

power pcb

FIG. 2.6 - POW

ER SUPPLY RACK

CR3i

1.

M

ai

ns

soc

ket

2

.

Co

mpr

ess

or

pcb

3.

B

raki

ng resi

st

ances

4.

T

ran

sf

orm

er

5.

Gro

un

d/

eart

h

6.

M

ot

or eart

hi

ng react

or

7.

M

ai

ns f

i

l

t

er

8

.

R

a c

k 

C

3

i

-M

2 - 6

2.3

.

MO

TO

R CON

TR

OL PR

INC

IPL

E

2.3.

1.

INTR

ODU

CTI

ON

T

h e C

3

i

/ C

R 3

i

family of centrifuges is fitted with an asynchronous 3 phase motor. During the

ce

nt

rif

ugati

on, t

he

microproc

ess

or g

ene

rates

a system

of

sin

usoidal 3 phase

vol

tages, variab

l

e

in

amplitude and frequencies. During the braking phase the energy from the rotating parts is commuted

across a re

si

st

ance.

2.3.

2.

THE

MOT

OR

T

he

motor comprises a

3 phase

stat

or and

a short-ci

rcuit

ed

rotor.

When correctly powered, the stator creates a magnetic field rotating at the synchronised speed Ns :

Ns =

F/p

F :

supp

ly

f

re

que

ncy

P : numbe

r of pairs of poles of t

he

motor

The rotating field generated in the motor induces e.m.f.'s. These e.m.f.'s produce currents in the short

circuited rotor.

These induced currents found in the magnetic field create forces opposed to those which induced them.

It is the relative speed between the rotor and stator which is the cause of these induced currents, thus the

f

orce

s wi

l

re

duce

thi

s re

l

ati

ve sp

ee

d b

y drivi

ng the ro

tor at a spe

ed

close to t

hat of

the f

iel

d cr

ea

ted at the

stator.

The difference (s) between the synchronised speed Ns and the actual speed N of the rotor is called the

slippage.

s

=

N

s

-

N

Ns

A

t a given f

re

que

ncy, t

he s

l

ippag

e value d

ep

end

s on the re

sist

in

g torq

ue (i.e. t

hat of

the rotor).

C

3

i

-M

2 - 7

The volt

age

is rec

ti

f

i

ed

then f

il

tere

d

b

y C

to supp

l

y the c

onstant v

olt

ag

e

+E. The value of t

he

cap

acit

or C

is

high.

The 6 t

ransistors act as swi

tches (op

en or c

l

ose

d).

These

transist

ors c

ommute

at a f

ix

ed

f

re

que

ncy (8 kH

z).

To affect the voltage at R we act upon the commands of the transistors a and b, b always being the

opposite to a (a = closed, b = open). By changing the cyclic ratio (closed/open) we obtain a mean

sinusoidal value so we are able to vary the amplitude and frequency.

It is necessary that the pilot frequency must be elevated compared to the frequency of the generated

sinusoidal voltage. The latter is around 400 Hz at 24000 r.p.m. (f pilot / f sin = 10 at N max. speed).

In the same way, the voltages at points S and T will be sinusoidal between OV and +E and dephased by

2

π

/

3 be

tw

ee

n th

em.

These 3 voltages are simple voltages varying between OV and +E. They are partly sinusoidal and partly

on a

ba

se

l

in

e

sit

uated

at +E/2. T

hus the

O of t

he

sinusoi

dal volt

age

corr

esp

onds

to 50 % of

the cycli

c r

ati

o.

The voltages applied to the motor phases are the compound voltages VR-VS, VS-VT,VT-VR and will vary

b

etwee

n + E and - E

([O-(+E)

= -E]

Thus at

the motor term

inal

s are

re

cre

ated

the vol

tage

s whose

amp

l

it

ude

i

s close to that

of

the mains.

2.3.

3.

POW

ER CONTR

OL

Three voltages, variable in amplitude and frequency, dephased by 2

π

/3, must be supplied from a 50 or

60

H

z si

ngl

e p

hase m

ai

ns supply.

V

M

A

I

N

S 

STATOR

C

3

i

-M

2 - 8

2.4

.

EL

EC

TR

ON

ICS - S

TR

UC

TU

RE

2.4.

1.

INTR

ODU

CTI

ON

The electronic part of the apparatus is formed of two boards : the microprocessor + power pcb, where

eve

ry f

uncti

on is l

ocated

and

the use

r int

er

f

ace

pc

b

wi

th display and L

ED

s. T

he

f

orme

r is l

ocated

in

side

the

b

ody

of

the ma

chine (f

ig. 2.

3 or

2.5,

it

em

7), where

as the

se

cond

one

is i

n the b

ack of t

he

f

ront pa

nel (f

ig.

2.3 or 2.5, it

e

m 6).

The electronic imbalance sensor is located on the motor stabilizer (fig. 2.3 or 2.5, item 2) and allows the

detection of and excessive imbalance due to the rotor loading.

FIG.

2.7 - VARIATION OF THE CURVE OF THE M

OTOR TORQUE AS A FUNC

TION OF THE SPEED

C Max

M

o

t

o

r

t

o

r

q

u

e

R

e

s

i

s

t

a

n

t

o

r

q

u

e

T

o

r

q

u

e

Operating point

Speed

Speed synchronisation is directly proportional to the frequency of the voltage supplied to the motor. Ns =

f

x

60 (f

or a 2 pole mot

or).

T

he motor rotat

es at a spe

ed

N below t

he sp

ee

d Ns.

N s - N

Ns

=

SL

I

PP

A

GE (t

he sli

pp

age

varies b

etwee

n 1 and 3%).

To v

ary the sp

ee

d, it

is nece

ssar

y to v

ary Ns and thus the f

re

que

ncy of

the vol

tage

supp

li

ed

to t

he m

otor.

The torque characteristics will be translated on the speed axis. The supply voltage will vary within 0 to

12000 r.p.m. i

n ord

er

to kee

p

the U

/f

ratio constant and not saturate the

mag

netic circui

t.

C

3

i

-M

2 - 9

ZONE 1 :

This zone includes the microprocessor, the EPROM containing the software and the non-volatile RAM

containing the program parameters. The set of components in this zone is at the potential of the

microp

roce

ssor : 5 V

DC.

ZONE 2 :

Thi

s zone

ensur

es

the conformit

y of

the signal ty

pe

coming from the d

if

f

er

ent d

etec

tors b

efore the

ir arrival

at t

he m

icrocontrol

l

er

vi

a op

to couplers.

I

t al

so mo

ni

tors the li

d lock control and re

f

rige

rati

on gr

oup

comm

ands

.

The po

wer

supp

l

y f

or this zone is 12 VD

C.

The dif

f

er

ent signals coming to thi

s zone

are

:

-

B

owl

t

empe

rat

ure.

-

Si

gnal comi

ng f

rom the i

mba

l

ance se

nsor

-

T

ach

o s

i

gnal

-

L

i

d p

osi

ti

on si

gnal

-

T

he motor overtemp

era

t

ure a

nd the l

i

d lock sol

enoid cont

rol

.

2.4.2.

MICRO

PROCESS

OR + POWE

R PCB

On the microprocessor + power pcb, 3 distinct zones can be identified, whose functions are described

be

l

ow. E

ach zone

has it

s own in

de

pe

ndent power

supply.

ZONE 3

WARNING ! THIS ZONE IS AT MAINS VOLTAGE

This zone isolated from the microprocessor part by opto-couplers, is the electronic part related to the

powe

r in t

he sys

tem. T

his zone in

cludes

:

-

T

he 15 V

DC powe

r sup

ply f

or the control

elec

troni

cs f

or thi

s zone.

-

T

he

control ci

rcuit of

the 6 b

asic signals of

the IGB

T module.

-

T

he

3 PW

R

commands

comin

g

f

rom the

mi

crocontrol

l

er

-

T

he b

rake G

B

T

wi

th

the comma

nd which per

mit

s f

l

ow t

hroug

h t

he b

raking res

ist

or.-

-

T

he d

i

ode

bridge

whi

ch, f

rom the mains,

charge

t

he ca

pacit

or of

th

e conti

nous bus

-

T

he r

elay whi

ch, control

l

ed

b

y t

he sup

ply of

powe

r, t

hen shor

t ci

rcuit

s the re

sist

ance

of

the charg

e of t

he

cap

acit

ors

of

the conti

nuous b

us a

f

ew m

ome

nts af

ter switch-

on.

-

T

he m

odule of

6 I

GB

T

s and its heat si

nk whi

ch po

wer the m

otor.

2.4.3.

IMBALA

NCE

SENSOR

As described in the introduction, this sensor allows the detection of an excessive imbalance in the rotor

loading.

A

piezzo c

er

amic conve

rts the ene

rg

y cre

ated

b

y the vibration i

nto an electrical

signal.

A

f

ter sha

ping, thi

s

signal i

s se

nt t

o the microp

roce

ssor for t

he s

af

ety de

vi

ce

s.

2.4.

4.

TAC

HO SENS

OR

The t

acho se

nsor is comp

rised o

f

an optical

se

nsor, whi

ch, ge

ner

ates two pulses pe

r re

vol

uti

on.

2.4.5.

TEMPERAT

URE SENS

OR (CR

3

i

)

A

f

ter the

sha

ping

circuit , t

he

signa

l i

s 1.23 V

cc (0°C

) ±80

mV/

°C

2.4.6.

REFRIG

ERATIO

N CONTROL BOA

RD (CR3

i

)

The board controls the power signal to the refrigeration group.

C

3

i

-M

2 - 10

Jouan C3i User manual

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