Kendro Multifuge 3 S-R, Multifuge 3 L-R, Legend RT User manual

®

Multifuge

3 S-R/3 L-R, Legend® RT

120V 50/60 Hz

SERVICE MANUAL P/N 12004376

TABLE OF CONTENTS

Section Title Doc.- No. Page
1 OPERATING INSTRUCTIONS

2 SERVICE

2.1 Servicing Schedule 2-1/2

2.2 Trouble Shooting 2-3

2.3 Error Code 2-4/7

2.4 Test Points 2-8

2.5 Imbalance Behavior 2-9

2.6 Cleaning of Instrument Parts 2-9

2.7 Electrical Safety Check 2-10

3 FUNCTIONAL DESCRIPTION

3.1 Block Functions 3-1

3.2 Main Board Functions 3-1/2

3.3 Key and Indication Board - Easycontrol 3-3
Key and Indication Board - Quickcontrol 3-4

3.4 Speed Detection Board 3-5

3.5 Rotor Indication 3-5

3.6 Imbalance Detection 3-5

3.7 Lid Lock System 3-5

3.8 Cooling Plant 3-5

4 DIAGRAMS

4.1 Block Diagram 4-1

4.2 Wiring Diagrams 4-2/3

4.3 Wiring Connection Diagrams 4-4/6

4.4 Main Board, Component Plan 4-7/14

4.5

4.6 Speed detection, Component Plan 4-17

4.7 Sensor Board, Component Plan 4-18

4.8 Rotor Detection Board, Component Plan 4-19/20

4.9 Cooling Plant 4-21

5 DISASSEMBLY OF INSTRUMENT PARTS

5.1 Housing / Casing Parts 5-1/2

5.2 Electrical Components 5-2/3

5.3 Drive Components 5-3/4

5.4 Cooling Plant 5-4

6 SPARE PART FIGURES AND LISTS

6.1 Spare Part Figures 6-1/9

6.2 Spare Part Lists

7 TECHNICAL BULLETINS

Display Board, “Easycontrol” Keypad version,
Component Plan
Display Board, “Quickcontrol” Rotary switch
version, Component Plan

4-15
4-16

8 Preventive maintenance checklist

Calibration Certificate

Edition: 03 TABLE OF CONTENTS

22.11.01 AH Page: 0 - 2

Legend RT

Multifuge 3S-R / 3L-R

Service

Service

2.1 Servicing Schedule (yearly procedure recommended)

2.1.1 Maintenance Routine without Dismantling the Centrifuge

2.1.1.1 Electrical Installation and Safety

• Switch OFF the centrifuge and disconnect the unit from power, check voltage supply and mains
fusing (16 Amps, slow blow characteristic)

• Check condition of plug and wall socket - replace defective parts (customer’s responsibility)

• Check cord condition and fixing / connection - replace or refit it

• Check condition of instrument socket and replace it in case of bad contacts

2.1.1.2 Location and Mechanical Inst allati on

• Check the base (ground, table, lorry with lockable wheels etc.) for resonance-free and stable
conditions

• Check for a well ventilated place and sufficient distances to walls or adjacent equipment, without
exposition to direct sunlight

• Check the leveling of the centrifuge drive with use of a spirit level

2.1.1.3 Lid Tumbler Mechanism and Safety Device

• Connect the centrifuge to power and switch ON

• Check for correct automatic lid closing and self-acting lid opening - if in disorder, readjust lid,

swivel hinges, and/or locking devices

• Check the rubber gasket for lid’s and bolt’s sealing and replace, if damaged

• For checking the electronically safety circuit: start the centrifuge, let it shortly run and stop it, the

lid must not be unlocked by the microprocessor as long as the speed is more than 60 rpm - if
safety circuit is out of function, replace main board

2.1.1.4 Cleanliness of Spin Chamber and Motor Casing

• Open the lid and remove the rotor (for loosening turn the T-handle Allen key (5mm) in arrow
direction - see rim of rotor chamber)

• Clean the spin chamber with a dry and absorbent cloth (remove all dust and moisture - see also
section for Cleaning)

• Check the cleanliness of the motor flange and take care of the annular slot around the motor shaft:
penetrating fluids can damage the upper spindle bearing or electronics, remove fluids with an
injector and/or absorbent paper

2.1.1.5 Rotor and Accessories Condition and Sealing, bellows

• Check the condition of rotors and accessory parts (especially all supporting or stressed partitions):
the rotor and/or accessory parts must not be used any longer, if there are visible traces of
mechanical damage or rust

• Check the condition of rotor and/or accessory sealing and replace them in case of malfunction

• Bellows of gas lid stays have to be greased upside down with glycerin (part no. 70902649) once a

year.

2.1.1.6 Rotor Fixing and Drive Spindle

• Check the perfect condition of the collet chuck and replace it in case of malfunction (thread is worn
out, horizontal grooves etc. )

• Check the condition of the drive cone: the centrifuge must not be used any longer, if the drive
cone is damaged (e.g. bend or it’s bearings are worn out)

Edition: 04 Servicing Schedule

18.04.02/he/AH Page: 2 - 1

Legend RT

Multifuge 3S-R/3L-R

Service

2.1.1.7 Temperature Level (not at every unit)

• Check the wire gauze (behind the air inlet slots) left and right side for free ventilation, insufficient
air flow will lead to an inadmissible temperature rise of compressor, motor and electronic parts

2.1.1.8 Imbalance Behavior

• Install available and empty rotors and check the imbalance behaviour with rotor dependant cut off
and run through weights (see 2.5) and replace worn out motor rubber mounts, faulty main board or
sensor board

2.1.2 Maintenance Routine after Dismantling the Centrifuge Casing

2.1.2.1 Motor Supporting Elements

• Check the supporting and damping elements of the drive motor and replace them in case of
increased rubber abrasion or abundance of imbalance but at least every 3 years

2.1.2.2 Braking Circuit

• Check the function of the braking circuit (warming up of brake resistor, even and noiseless brake
effect) and replace defective parts in case of malfunction

2.1.2.3 Lead and Screwing Connections

• Check the terminal and plug connections of all leads and on all boards and electrical components,
tighten all loosen screwing connections, refit or replace defective parts

• Check the wedged connections of the board, mechanical and electrical components and re-tighten
them if necessary (use screw locking lacquer for motor mounts and lid lock assembly)

2.1.2.4 Protection Earth Core and Groundi ng Con necti ons

• Check the protection earth core for continuity and all grounding plug connectors (see also 2.7
Electrical Safety Check)

• Check isolation resistance and accessible current (see 2.7)

Edition: 04 Servicing Schedule

18.04.02/he/AH Page: 2 - 2

Legend RT

Multifuge 3S-R/3L-R

r

2.2 Trouble Shooting

Error

Indication

Error Cause

Service

Possible Error

Source

Mains switch with
integrated fuse or

fuses on main board

Corrective Procedure

Switch on again, disconnect electric.

components success., search for other

faults

Displays

remain

dark

All display

Elements

are shortly

illuminated

Constant

No mains

voltage supply

No low voltage

supply for

indication board

Interrupted

program

CPU program

reset may be

caused by EMI

Interruption Parameter NV-RAM No or defective NV-RAM

Mains fuse or circuit

breaker failed

Faulty mains cord or

instrument socket

Faulty connection

from CPU to

indication board

Faulty indication or

CPU board

NV-RAM out of

socket or not

correctly placed

Reduced voltage

supply (<10%)

Bad or missing

ground connection

Check fuse or circuit breaker and replace o

switch on again

Check instrument cord and socket, replace

defective parts

heck connections on CPU, indication board

and connecting leads, replace defective

parts

Replace main board completely

Insert the valid NV-RAM and push it

correctly into socket

Remedy the failure if the voltage drops

often, use a voltage stabilizer

Check all ground connections and the

ground connection of all boards

Drive

makes

noises -no

good

separation

result

Lid cannot
be opened

by key at

standstill

Edition: 04 Servicing Schedule

18.04.02/he/AH Page: 2 - 3

Mechanics

Electrical

Locking drive is

not supplied

with voltage

Latch motor Faulty motor winding Replace complete motor

Lid is not

correctly locked

wear out of motor

rubber mount

Defective terminal

connection, faulty

lead or motor winding

Faulty power electr. Replace main board

24V supply

faulty relay K2

faulty driving circuit

Lid bolt is jamming

Lid is deformed Re-adjust the lid centrally

Replace motor rubber mounts (at least

winding resistances -see test points on

Push lid centrally into lock and press the

every three years)

Check voltage on motor terminal and

main board

Check voltage for drive motor

Check switch. after power ON

Replace the main board

No or defective NV-RAM

key again

Legend RT

Multifuge 3S-R/3L-R

2.3 Error code

Error

Indication

„rotor“ in

speed

display

Error Cause

Wrong selection

of detected rotor

Service

Possible Error

Source

Inadmissible speed

or rcf value was pre-

selected

Corrective Procedure

Press start again (within 15s), else wait for

rotor standstill, lid OPEN/CLOSE, set value,

start

“bAL“

message

appears in

speed

display

“Lid“

appears in

speed

display

Imbalance run

Lid was opened
manually during

run

Protection circuit

(20V) interrupted

during run

Rotor not symmetri-

cally loaded

Base is not sturdy

enough and comes

into vibrations

Centrifuge drive is

not correctly leveled

Rotor itself has

imbalance

Drive shaft or rotor

fixing is damaged

Imbalance sensor Replace sensor board

Circuits of main

board

Forbidden

intervention

emergency opening

device must only be

used at standstill

Defective micro

switch or leads or

connectors to micro

switch are interrupted

Open lid, check rotor loading, close lid again

and restart

Change or reinforce the base (table, lorry with

lockable wheels, etc.)

Level the drive correctly by means of unit’s

feet

Rotor must no longer be used, send back to

Kendro

Replace collet chuck or motor

Replace the main board

Close lid immediately, turn power OFF/ON,

press lid down for locking, press start key,

press stop to finish run

Check leads and connectors to micro switch,
in case of a faulty micro switch, replace them

Loose plug

„OPEn“

appears in

speed

display by

supposedly

closed lid

“S-LID”

appears in

display

Edition: 04 Servicing Schedule

18.04.02/he/AH Page: 2 - 4

20V supply for

protection circuit

is interrupted at

standstill

Sensor signal not

clear

connectors

Interrupted leads to

micro switch

Defective micro

switch

Latch not in valid

position during power

on

Check plug X20

Check leads to micro switch for continuity

Replace micro switch

Switch unit “off” and “on” again

Legend RT

Multifuge 3S-R/3L-R

Error

Indication

Error Cause

Service

Error Code

Possible Error

Source

Corrective Procedure

„E-01“

message

„E-02“

message

„E-03“

message

„E-04“

message

“E-05”

message

“E-06”

message

“E-07”

message

“E-08”

message

“E-09”

message

“E-10”

message

“E-11”

message

“E-12”

message

“E-13”

message

„E-14“

message

System clock

pulse not stable

program

sequence was

disturbed

Stack overflow

Stack underflow

Reset by HW

watchdog timer

Data lines to key

board disturbed

Display board

doesn’t match to

main board

cooled/non-

cooled

Check sum error

E-PROM

Check sum error

NV RAM

NV RAM not

initialized

NV RAM doesn’t

match E-PROM

Check sum error

NV RAM

Check sum error

NV RAM

chamber over

temperature:

display >50°C

Hardware fault on

main board

Internal Software

problem

Internal Software

problem

Internal Software

problem

Software problem No action in the field possible

Wiring display board Check wiring and connectors

Check software Replace NV RAM and CPU

E-PROM failed Replace E-PROM

NV RAM failed Replace NV RAM

Initializing of NV-RAM

is not valid

Check versions of NV

RAM and E-PROM

NV RAM failed Replace NV RAM

NV RAM failed Replace NV RAM

Compressor didn’t

work

Faulty cooling cycle Exp. valve, refrigerant loss

Change CPU, replace main board

check NV-RAM and socket, insert the correct

Check leads, terminals, start relay, capacitor,

Change main board

No action in the field possible

No action in the field possible

NV-RAM

Replace NV RAM and E-PROM

compressor

„E-15“

message

„E-16“

message

„E-17“

message

Edition: 04 Servicing Schedule

18.04.02/he/AH Page: 2 - 5

Open temp.

sensor

Short cut temp.

sensor

wrong or faulty

rotor detection

Check sensor, control

circuits

Check sensor, control

circuits

a wrong rotor was

installed

Mains voltage failure press stop key, wait for standstill and restart

Faulty detection

circuit

wait for standstill, open the lid and install a

Replace sensor or main board

Replace sensor or main board

correct rotor

replace the main board

Legend RT

Multifuge 3S-R/3L-R

Error

Indication

„E-18“

message

„E-19“

message

Error Cause

Bucket code

not valid for this

rotor

Rotor code not

programmed

Service

Error Code

Possible Error

Source

Corrective Procedure

Not valid

Wrong rotor installed Check rotor

Interference during

recognition

Check rotor recognition board and wiring

„E-20“

message

„E-21“

message

„E-22“

message

„E-23“

message

„E-24“

message

„E-25“

message

„E-26“

message

„E-27“

message

„E-28“

message

rotor code not

valid

Recognition
disturbance

Speed signal

disturbance

Speed control

measuring

disturbance

Latch not in top

position

Time out latch

open

Time out latch

close

Signal given by

latch not valid

Wrong sense of

rotation

See E-19

wiring Check wiring

wiring Check wiring

nd

2

check was done

by rotor recognition

Check speed detection board

system

Micro switch failed,

Check micro switch adjustment, if necessary

de-adjusted, latch

Hall sensor signal not

applied

Hall sensor signal not

applied

Check latch motor and PCB

Check latch motor and PCB

Wrong identified

signal after power

“on”

After replacement of

the motor- wires

mixed

replace it

Check hall sensors

Check wiring at terminal

„E-29“

message

„E-30“

message

„E-31“

message

„E-32“

message

„E-33“

message

Motor doesn’t

turn

Control-voltage

interruption

over-

temperature

motor >150°C

Over-

temperature

Electronic

High-pressure

Cooling system

PCB faulty, see E-21,

E-22

PCB failed Replace PCB

Hot motor, no air

circulation

Faulty main board Replace main board

Faulty high pressure

switch, blocked

system

Edition: 04 Servicing Schedule

18.04.02/he/AH Page: 2 - 6

Change PCB, rotor recognition, speed

detection, fasten motor wiring at terminal

Check motor, check grill for dust

Inspect cooling system

Legend RT

Multifuge 3S-R/3L-R

Error

Indication

Error Cause

Service

Error Code

Possible Error

Source

Corrective Procedure

„E-34“

message

„E-35“

message

„E-36“

message

„E-37“

message

„E-38“

message

„E-39“

message

„E-40“

message

„E-41“

message

Over-voltage

Over-current Main board Replace main board

NMI

interruption

Over-current

continuously

Current

measurement

disturbed

Speed control

check >n max.
Acceleration of

the unit is too

slow

Offset voltage

from the

imbalance

sensor is in a

inadmissible

area

Brake resistor,

main board

Over voltage or over-

current

Main board Replace main board

Analog signal >

hardware over current

Speed > calculated

speed

Big imbalance

Motor or main board

faulty

Imbalance sensor

faulty
Wiring from the speed
detection board to the

main board is broken

Check brake resistors, replace main board

Replace main board

Replace main board

Check speed detection board, replace the

main board

Check rotor loading, motor and main board

Replace speed detection board

Check / replace the wiring

Edition: 04 Servicing Schedule

18.04.02/he/AH Page: 2 - 7

Legend RT

Multifuge 3S-R/3L-R

Service

2.4 Test Points

Test Points Unit Value Conditions

Mains terminal

Board resistance

Motor over-temp.

terminal

X20/B3,B4*

Over-press switch

terminal X20/P

Fans cooling plant

terminal XK

Compressor

terminal XG

terminal box

–insulation value

Speed detection

plug XW

(1 to 4)
(3 to 4)

speed

Imbalance sensor

plug XW

(1→4)
(2→4)

120V

50Ω

20V DC

20V DC

100 Ω

82 Ω

6,5 A
1,6 Ω
4,8 Ω

> 10MΩ

5V DC

4,4V

0V

n=f*30

12V DC

a(t)

All given values are related on 120 V (+/- 10%) mains voltage for

board supply

Voltage drop by one disconnected lead (error case) and linked

terminal XR

Voltage drop by one disconnected lead (error case) and linked

terminal XO

Switch OFF unit, fan resistance temperature 20°C

wire black to blue

wire brown to blue

Switch OFF unit, compressor temp. 20°C

Resistance of main coil + (starting relay 0.1Ω)

Resistance of auxiliary coil (joints 13 -> 14)

Resistance inter phase and motor casing

Board with active filter circuit

Low voltage supply
Light barrier is passed through (slot position)
Light barrier is out (turn cone a little by hand)

When centrifuge is running

Low voltage supply of sensor board

Amplitude of lateral acceleration is rotor and speed dependent,

analyzed for n > 250 rpm

Motor current I

M

cable (U,V,W)

Motor winding

resistance 20°C –

insulation value

Brake resistor

terminal XD

Rotor detection

plug XR

Temp. measuring

plug XU

3 * 7A

3 * 5,2A
3 * 3,0A

3x2,5Ω

> 10MΩ

60Ω

5V DC
0V DC

Switch OFF unit, 2 resistors parallel connected, resistance at

pulse pause lengths, this pulse mode is generated by 4 alternately

Split core transformer with Flukemeter

maximum during acceleration

Rotor #6441, set speed = 3750min

Switch OFF unit, pull off motor plugs, measure inter

U -> V, V -> W, W -> U

Resistance inter each phase and motor casing

Per rotor revolution 2 different long

pulses are separated from 2 different

Chamber temperature 20°C (PT100:
Chamber temperature -10°C (PT100:
Chamber temperature 40°C (PT100:

Edition: 04 Servicing Schedule

18.04.02/he/AH Page: 2 - 8

20°C

polarized magnets

-1

, 560W

≈

108Ω)

96Ω)

≈
≈

116Ω)

Legend RT

Multifuge 3S-R/3L-R

Service

2.5 Imbalance Behaviour

• Install in table available rotor(s) in unloaded condition

Rotor/Bucket Run through

weight

75006445/75006441 20 grams 30 – 40 grams

• Insert rotor dependent cut-off weights and position them at angles of 90° to each other, the
centrifuge must stop 4 tim es indicating “bAL“ message - in case of false behaviour see trouble
shooting: no “bAL“ indicatio n.

• Insert the admissible imbalance weights in the same manner, the centrifuge must run through 4
times to maximum rotor speed.

2.6 Cleaning of Instrument Parts
ATTENTION - WARNING!

The electrical and electronic components must not be cleaned with moist detergents!

For Cleaning the centrifuge housing or its accessories see Operating Instructions section 1
(maintenance and care).

• Electronic components

Clean dusty components carefully with a dry and soft brush and remove loose dust with a
vacuum cleaner.

• Fans
Scratch off car efully with a knife or similar tool the cr usted dirt from the fans ’ blades. Resulting
grooves or marks must be removed subsequently with a fine abrasive cloth. Loose dirt is to
remove with an absorbent cloth or vacuum cleaner.

• Vent holes
Remove dirt from the vent grid behind the front panel by using a brush and vacuum cleaner.

• Condensers of cooling plant (if available)
The louvers between the c ondensers’ heat air deflect ors have to be vacuum c leaned. In case of
persistent dirt the unit must be carried to an appropriate place where the condensers can be
cleaned with compressed air from inside to outside. Bended heat air deflectors have to be
realigned correctly.

Cut off weight

Edition: 04 Servicing Schedule

18.04.02/he/AH Page: 2 - 9

Legend RT

Multifuge 3S-R/3L-R

Service

2.7 Electrical Safety Check

ATTENTION!

A final electrical safety check must be performed after each maintenance and/or repair!

• Resistance check of protective conductor
The measuring value of the resistance between the mains plug's grounding pin and the
grounding conductors of the motor, electronic chassis and the casing must not exceed 200 mΩ.

• Insulation resistance Check
Check also the insulation resistance between the poles of the mains plug and the grounding
conductor; the resistance value must be more than 2 MΩ.

• Accessible current measured to EN 61 010
The accessible current must not exceed 3.5 mAmps in single fault condition (interrupted
protection earth wire)! In accordance with the EN61010, IEC1010 and UL3101 such a fault
condition can be reproduced by the following measuring circuit.

Steckergehäus e / plug-in casing

L (N)
N (L)
PE

500

±1%

Ω

0,22µF

±5%

Ω

Körperstrom:

accessible current:

U = 1750mV I = 3,5mA

10k

±5%

0,022µF

±5%

I [mA] = U [mV] / 500 :

max max

≡

Spezifaktionen für Meßgerät

- TRMS, DC - 5kHz oder mehr

- Eingangswiderstan d > 1M

- Toleranz 5% oder besser

- Crest Faktor 5 oder besser

V

AC

Specifaction for the meter

- TRMS, DC - 5kHz or more

- Input resistance > 1M

- Tolerance 5% or better

- Crest Factor 5 or better

Ω

Ω

Edition: 04 Servicing Schedule

18.04.02/he/AH Page: 2 - 10

Legend RT

Multifuge 3S-R/3L-R

3 Functional Description

3.1 Block Functions

The Multifuge 3L-R/3S-R, Legend RT is a refrigerated microprocessor controlled laboratory
tabletop centrifuge with noise reduced induction drive motor incorporating automatic rotor and
imbalance detection and self-closing door locking systems.

The unit is equipped with following boards and components (block diagram 4-1):

• Instrument socket for mains cable at the back

• Two poles mains switch

• Main board with microprocessor part and power electronics

• Key and indication board (program: EASYCONTROL II with temp. Display or QUICK-CONTROL

with adjusting knob)

• Sensor board with rotor detection sensors

• 3 phase induction motor with integrated thermal over-temperature switch (C. O. 150°C)

• Speed detection and imbalance board with filter attached to the motor’s bottom by screws

• self-closing door locking system (mechanical bolt keeper, motor dis-locking)

• 2 parallel brake resistors mounted on safety chamber (one with overtemp.sensor)

• axial-flow fan for power electronics, motor and chamber

3.2 Main Board Functions

The Main board is mounted at the housing behind the front panel. The components on main
board are arranged in following function blocks (see wiring diagram page 4-2 and 4-3).

• Noise filter in accordance with EN 55011 for motor and triac circuits

• Power pack for low voltage supply of microprocessor part and power electronics

• Triac driving circuits for compressor cut-in relay, for 2 independent fan wiring terminals and for

connection of a heater (special use)

• DC intermediate circuit for supply of frequency converter equipped with automatic loading and
voltage (brake) controlling circuits

• Power part inclusive physically separated driving stages

• Microprocessor part with CPU, E-PROM and NV RAM

• Driving component for self-closing lid lock device

• Interface component for serial RS232 (option)

• Exchangeable NV-Ram and E-PROM containing specific data of the unit

3.2.1 Power Pack

The power pack consists of 2 transformers, 2 rectifiers (single diode) and 2 voltage regulators, which
generates the following low voltage levels:

• U1 = 5V: by switched-mode regulator LM2575T-5.0, VDD, VCC

supplies all processors and its electronic components on main and indication board

• U2 = 24V: unregulated

is used for the driving of lid lock motor and relays K2, K3;
the reference potential is GND, VSS

• U3 = 20V: by 2nd transformer, rectifier diodes and fix voltage regulator 7820

serves for supply of driving of the power electronics via the protection circuit by closed lid
switches
reference potential: 0V CAUTION - MAINS POTENTIAL!

Edition: 03 Servicing Schedule

13.03.01/he Page: 3 - 1

Legend RT

Multifuge 3S-R/3L-R

Main Board Functions

3.2.2 Intermediate Circuit

The DC intermediate circuit serves as an energy store between the AC power input and the
transmitted motor performance. The intermediate circuit consists of a heat-sink-cooled bridge
rectifier and several reservoir capacitors which are softly charged across a power resistor R76 when
ever the unit is switched on. After the loading time (CPU initialization time) the power resistor is
linked by the relay contacts of K3. When switching the unit off, the DC voltage of the intermediate
circuit is discharged across a path of resistor R1, R2.

3.2.3 Brake Path

Electrical power is fed back into the intermediate circuit during motor deceleration (motor acts as
generator). This braking power is transformed into heat by two parallel connected resistors so that
the intermediate circuit voltage does not rise to an excessive level. The brake resistors are switched
into the intermediate circuit by a fast switching transistor (pulse-width modulation, synchronized by
the double mains frequency). This transistor is voltage dependent controlled by a self-acting stage
(closed loop).

3.2.4 Frequency Converter

The motor is 3-phased, provided with chopped direct voltage blocks (chopped frequency approx.
5kHz, amplitude is height of DC intermediate voltage). These blocks are variable in frequency and
pulse-width modulation, 120° out of phase. These 3 phases are controlled during acceleration,
running at set speed and deceleration (e.g. for small speed: low frequency and small pulse-width
length will be affected). The FC is protected against over current, over temperature and over-voltage.

3.2.5 Microcontroller (Central Processing Unit) Part

The software identification No's of the CPU and data storage’s (NV-RAM) ST24C32 are sequentially
displayed in speed and time fields:

Press program place no 2 during switch on

• CPU Operating panel: 526 P05

• Firmware: 528 200

• NV-RAM: 4468 105

The actually indicated version No.'s are displayed in the time field and will be upgraded if program or
data changes are necessary.
The control program (ROM) is integrated in the controller component. The most important operating
parameters (e.g. the maximum data for all rotors, the last operator settings, the basic values for
speed and temperature controlling, data of acceleration and deceleration curves as well as 4 data
sets of program places are stored in the non volatile (NV)-RAM.
When calling this routine the actual value of all centrifugation cycles (“CYL“) is also shown in the
display (as fourth No.) before the check routine for all program places puts an end to the initialization
time (approx. 18s).
The CPU co-operates with the E-PROM component via the 16 bit data bus and some control lines.
The CPU is an integrated circuit, generating all required output signals, monitoring and analyzing all
input signals.

Edition: 03 Servicing Schedule

13.03.01/he Page: 3 - 2

Legend RT

Multifuge 3S-R/3L-R

3.3 Key and Indication Board - Easycontrol

The key and indication board is mounted behind the operating panel. The connection to the main
board is done by a 4 pole cable by which the serial data transfer as well as the low voltage supply of
5V is verified. The 7-segment displays, the control LED’s and the operating keys are managed by an
own controller unit (first identification No. 591) in multiplex processing.
For the programming serves EASYCONTROL II (see Operating Instructions).

Functions of keys elements (Easycontrol)

Keys Designation Function(s)

S1 – S4

S5 Arrow up Acceleration profile 1 to 9
S6 Arrow down Deceleration profile 1 to 9
S7 Speed arrow down Decrement the value of the set speed
S8 Speed arrow up Increment the value of the set speed

S9 Bucket Setting of the rotor / bucket number
S10 At the same time Switching between rpm and rcf display
S11 Time arrow down Decrement the value of the set time
S12 Time arrow down Increment the value of the set time
S13 Temp. Arrow down Decrement the value of the set temperature
S14 Temp. Arrow up Increment the value of the set temperature
S15 Frost Pre cooling
S16 Double arrow Quick run – hold button pushed
S17 Lid symbol Open the lid
S18 Arrow right Normal start of the centrifugation
S19 Red square

Program

place 1 to 4

Store or recall programs

Manual stop of a run

Functions of Indicating Elements (Easycontrol)

Indicat. Designation Function(s)

H1 Buzzer Audio signal
H2 Accel. curve digit Display defined acceleration curves 1 to 9
H3 Decel. curve digit Display defined deceleration curves 1 to 9

Speed in rpm (rounded to full 10 rpms)

Rotor not yet detected (xxx „.“)

H4-H7,

H12

H13-H15 Time range

H16,H17 Temperature range

H18 Allocation LED For speed indication
H22 Allocation LED For rcf indication

H19,20,

24,25

Speed range

Rotation Rotor spinning

rcf-value (xg) or not yet possible to calculate „-----“

Identifications no.’s of controller and NV-RAMs,

Lid open condition („OPEn")

Centrifuge run is terminated („End")

Error messages („Lid“, „E-xx“, „bAL“, „rotor“)

Centrifugal time in h.min (count down process)

Count up process (hld) in h.min (count up process)

Actual version number („xx“)

Sample temperature in °C± 2K when pre-cooling or

pre-heating process is terminated

Edition: 03 Servicing Schedule

13.03.01/he Page: 3 - 3

Legend RT

Multifuge 3S-R/3L-R

Key and Indication Board - Quickcontrol

The key and indication board is mounted behind the operating panel. The connection to the main
board is done by a 4 pole cable by which the serial data transfer as well as the low voltage supply of
5V is verified. The 7-segment displays, the control LED’s and the operating keys are managed by an
own controller unit (first identification No. 591) in multiplex processing.
For the programming serves Knob control system Quickcontrol (see Operating Instructions)

Functions of keys elements (Quickcontrol)

Keys Designation Function(s)

S1 Adjusting knob Set point temperature

S2 Adjusting knob Set point time

S3 Adjusting knob Set point speed

S6 Arrow up Deceleration profile 1 to 3

S9 Bucket Setting of the rotor / bucket number
S10 At the same time Switching between rpm and rcf display
S16 Double arrow Quick run – hold button pushed
S17 Lid symbol Open the lid
S18 Arrow right Normal start of the centrifugation
S19 Red square

Functions of Indicating Elements (Quickcontrol)

Manual stop of a run

Indicat. Designation Function(s)

H1 Buzzer Audio signal
H3 Decel. curve digit Display defined deceleration curves 1 to 3

Speed in rpm (rounded to full 10 rpms)

Rotor not yet detected (xxx „.“)

H4-H7,

H12

H13-H15 Time range

H16,H17 Temperature range

H18 Allocation LED For speed indication
H22 Allocation LED For rcf indication

Speed range

rcf-value (xg) or not yet possible to calculate „-----“

Identifications no.’s of controller and NV-RAMs,

Lid open condition („OPEn")

Centrifuge run is terminated („End")

Error messages („Lid“, „E-xx“, „bAL“, „rotor“)

Centrifugal time in h.min (count down process)

Count up process (hld) in h.min (count up process)

Actual version number („xx“)

Sample temperature in °C± 2K when pre-cooling or

pre-heating process is terminated

Edition: 03 Servicing Schedule

13.03.01/he Page: 3 - 4

Legend RT

Multifuge 3S-R/3L-R

3.4 Speed Detection Board

On a small board, which is attached underneath the motor, the circuits for speed detection and signal
shaping are arranged. The motor speed is optically detected by an infra-red light barrier. The motor
axle has a hole at the same level as the light barrier. This effects that the light beam will be
interrupted twice during one motor revolution. A following pulse shaping stage on board forms
square-topped pulses which are led via XW1 to the main board. The speed pulses are counted by
the CPU to display the exact motor speed.

3.5 Rotor Indication

In the rotor’s bottom 4 magnets are forced, being alternately arranged in polarity and positioned to
each other to different distances on a constant circular ring (segment steps of 20°).
A Hall sensor is exactly fixed below to the sensor board. The magnets are switching a flip-flop stage
by which different pulse lengths and pulse intermissions are generated during one rotor rotation. By
this signal the CPU is able to detect up to 65 different rotors and the correct direction of rotation, too.

3.6 Imbalance Detection

On the speed detection board a piezoelectric acceleration detector is additional fixed. Dependent of
the rotor imbalance this sensor generates an analogous voltage signal which is led via a following
band-pass filter to plug connection XW1/2 to main board, where it is analysed by CPU. When the
CPU) has identified the installed rotor type, the speed dependent imbalance limitation curve from E­PROM The analogue imbalance signal is filtered, converted into digital form and continuously
comperated with this specific limitation curve. If the actual imbalance signal will rise at any speed
beyond the limit, the error signal for imbalance load “bAL“ will be displayed and the unit slows down.

3.7 Lid lock system

The latch is directly controlled by CPU via a PWM motor driver. If all necessary signals are existing
which allow an opening the motor is fired with a pulsed voltage of 24 VDC. For additional safety the
relay K2 will be activated if the speed is below 120 rpm controlled by triggered mono-flops.

3.8 Cooling plant

The Multifuge 3SR/LR, Legend RT is equipped with a high-grade cooling plant, to meet it’s
requirements of driving power and compact design. The CFC free refrigerant R404A evaporates at
low temperatures (≤ -20°C) and absorbers through this the frictional heat from chamber produced by
the fast spinning rotor. 5 fans serve for even air flow through condenser so that the refrigerant’s
condensing temperature is kept on a low level (lateral front fans are only switched on, if n > 0 rpm).
A specially designed coaxial heat exchanger serves for essential undercooling of the condensed
refrigerant to ensure an optimum evaporation and a perfect operation of the expansion valve. To
maintain low evaporation and resultant condensation temperatures on one hand and to support the
starting procedure of the compressor on other hand, a thermostatic expansion valve with 3.0bara
MOP is used.
The minimum achievable sample temperatures are depending on speed, rotor type and a little on
ambient temperature. After a compensating time, given by the pre-cooling or pre-heating program as
optimal result, the rotor has reached the selected set temperature within a tolerance of ± 2K.
To reduce the power consumption of the unit the compressor will not be activated during
accelerating of the motor. When reaching the selected speed the compressor will be activated if a
low temperature had been selected.

Edition: 03 Servicing Schedule

13.03.01/he Page: 3 - 5

Legend RT

Multifuge 3S-R/3L-R

Unit's Plug

SCHEMATIC DIAGRAMS

132

0 0

4

SORVALL

S0

Mains Switch with Over-current Release

16A

X4

P/L/PE

XD1

D

®

F1

F2

LEGEND

X13

+/-

rpm

x g

xg

RT

KEY AND INDICATION BOARD

MAIN BOARD

X20

A

X20

B

X122
1/2/3

X11

C

XI

XW1

W

Temp. Sensor

PT

V1

100

X5

U

X12

M

Sensors for Lid Lock

X12

V

X17

G

X14

C

Rotor Detection

XXX

XR1

R

X20

P

Overtemp.

Edition: 04

04.07.02 AH

F3F4 F5

M4

R2 R3

R1

S1

Lid Lock SwitchBrake ResistorBrake Resistor

Overtemp. SwitchLid Lock

Motor

3~

M1

Motor

Speed Detection

2 Pulses/revolution

Imbalance Sensor

a(t)

Block Diagram

4-1

Resistor for
Speed Limit

Compressor

Fan

M3

Fan for

Compressor

p>

M2

Compressor

Pressure Switch

Multifuge 3S-R / 3L-R / Legend RT

16A

S0

Mains

NPE

120V

SCHEMATIC DIAGRAMS

L

4R7 11W

DC Intermediate Circuit

noise filter

+24V

K3

DC Charging Circuit

BYPASS

Autom. Brake Control

X4/L

+24V

F1

+5V
(VCC)
(VDD)

X4/N

F2

+24V

LM2575T-5.0

GND
VSS

+325V

1

0V

2

MAIN BOARD

X4/PE

K1

Chassis

Edition: 04

04.07.02 AH

Ground Motor

COOLING

GND

X17/G

2

1

M2

10

Î

11

13

14

Compressor

with Starting Relay

X12/M

4

C

S

240µF

Speed Reduction

R3

FAN2

FAN1

X12/V

3

2

4,0µF

1

C

L

XA2

S1

M3

Fan for CondenserResistor for

Lid Lock Switch

7820

0V

X20/B

4

3

F3

Motor

Overtemp.

X20/P

2

1

21bar

p>

F5

Overpressure

Switch

+20V

OVERPRESSURE

XD1/R

13

24

R1

F4

2 x 120W

R2

Brake Resistors with

Overtemperature Protector

Wiring Diagram

4-2

Multifuge 3S-R / 3L-R / Legend RT

SCHEMATIC DIAGRAMS

KEY AND INDICATION BOARD

MAIN BOARD

20V

+325V

1

Frequency Converter

0V

2

Current Control Restistor

X122/

1

20V

2

2

3

0V*

3

µC87C54

EASYCONTROL II

0526Vxx

5V

GND

XI

4

XI

COOLING (M2)

K3 (BYPASS)

0528Vxx

Fan1 (M3)

Fan2 ()

Heating ()

3

7

6 IGBT’s

RESET

LID_CLOSED
OVERVOLTAGE
OVERCURRENT
MOTOR_OVERTEMP.
ELECTRONIC_OVERTEMP.
OVER_PRESSURE
POWER_FAIL

36

CPU

NV-RAMEPROM

4467Vxx

4

µP - Part

LID_LOCK_BRAKE
LID_LOCK_ENABLE
LID_LOCK_DIRECTION

LID_NEARLY_CLOSED
LID_LOCK_CLOSED
LID_LOCK_OPEN

K2

24V

1s

5V

GND

24V

Lid Lock Driving

in:

+

out:

-

­+

K2

i

dyn

X5/U1

X5/U2

XR/ 1 2 3

+5V +5V

GND

GND

1

XW/ X14/ 3 5 7

2

234

1

X13/

-

+

Edition: 04

04.07.02 AH

M1

Motor

3 x 2,5

Physical Separation

W

V1

PT100

J

Temperature Sensor

X

Hall Effective Sensor

Wiring Diagram

4-3

n=0:

n>0:

Speed Detection Board

a(t)

+5V

GND

X

X

M4

Lid Locking Device with

Switches and Sensors

Multifuge 3S-R / 3L-R / Legend RT

SCHEMATIC DIAGRAMS

Mains Input

10

10

Start Capacitor

12

12

13

13

Relay for Compressor

PCB Rotor Detection (fill up)

1

PCB Speed and Imbalance Detection

2

( under the motor)

Motor

3

Pt100 Temperature Sensor

4

Switch at the left Lid Lock

5

Motor for Lid Lock

6

Switch Lid Lock

7

PCB Sensors for Lid Lock

8

Resistor for Fan

9

Edition: 04

04.07.02 AH

14

15

16

1

2

3

5

-

6

+

8

1

2

3

5

4

XW1

4

21

7

9

11

7

8

10

25

23

9

12

6

22

25

13

14

17

17

18

19

20

25

Line

Out

24

15

Toroidal Core with

14

2 electrical windings

Compressor

15

Over Pressure Switch

16

17

Brake Resistor

18

Temperature Fuse

Condenser

19

Fan for Condenser

20

Switch at the right lid lock

21

Capacitor for Fan

22

Toroidal Core with

23

2 electrical windings

24

Mains Switch

Toroidal Core with

25

1 electrical winding

Wiring Connections Diagram

4-4

Multifuge 3S-R / 3L-R / Legend RT

Temperature Sensor

PCB sensors for Lid Lock

Motor for Lid Lock

PCB Rotor Detection

PCB Speed and Imbalance Detection

Switch Lid Lock

SCHEMATIC DIAGRAMS

Fan for Condenser

Resistor for Fan

Motor

Over Temperature Switch Motor

PE - Terminal

Mains Input

Compressor

Over Pressure Switch

Brake Resistors

Mounting of Unit Ground

1x PE terminal 3 pole
1x screw M4x10mm
2x fan washer 4,3mm

12

34 5 6 7 8 910 1112 13 14 15

XW1

MAIN BOARD

Edition: 04

04.07.02 AH

Key- and Indication Board

Wiring Connections Diagram

4-5

Multifuge 3S-R / 3L-R / Legend RT

SCHEMATIC DIAGRAMS

Connection Diagram Compressor

Compressor

Main Board G2, black
Main Board G1, white

Starting

Capacitor

Starting Relay

10

BLK

12

WHT

11

13

14

grn yel

Edition: 04

04.07.02 AH

Wiring Connections Diagram

4-6

Multifuge 3S-R / 3L-R / Legend RT

SCHEMATIC DIAGRAMS

Lid Lock Control

B06

/LID_LOCK_ENABLE

/LID_LOCK_BRAKE

LID_LOCK_DIRECTION

RPM_PULSE

/LID_NEARLY_CLOSED

/LID_LOCK_CLOSED

/LID_LOCK_OPEN

Controller

/LID_LOCK_ENABLE

/LID_LOCK_BRAKE

LID_LOCK_DIRECTION

RPM_PULSE

/LID_LOCK_CLOSED

/LID_LOCK_OPEN

H04

RESET

/PHASE1

/PHASE2

/PHASE3

ELECTRONIC_OVERTEMP

CURRENT/LID_NEARLY_CLOSED

/OVERCURRENT

/OVERVOLTAGE

OVER_PRESSURE

MOTOR_OVERTEMP

/LID_CLOSED

FAN1

FAN2

COOLING

HEATING

BYPASS

POWER_FAIL

Protection Circuits

ELECTRONIC_OVERTEMP

CURRENT

/OVERCURRENT

/OVERVOLTAGE

OVER_PRESSURE

/LID_CLOSED

C05

+20V_switched

+325V

Inverter

RESET

/PHASE1

/PHASE2

/PHASE3

+20V_switched

0V*

ZK2

+20VMOTOR_OVERTEMP

0V

0V*

+325V

B03

Supply

+325V

ZK2

+20V

0V

FAN1

FAN2

COOLING

HEATING

BYPASS

POWER_FAIL

C02

Edition: 04

04.07.02 AH

Main Board 184 Overview

4-7

Multifuge 3S-R / 3L-R / Legend RT

SCHEMATIC DIAGRAMS

Mains
Connection

N

L

PE

Phoenix-Klemme

Cooling
Aggregate

Fan 2

Resistor for Fan
Speed Reduction

Fan 1

Heating

X4

G1

G2

WAGO 256-602

3

2

1

X17

1

2

X12

F

F

M

M

V

V

WAGO 256-606

X2

H

H

WAGO 256-602

6

5

4

3

2

1

1

2

8

6

4

2

GND

F2

SI 15AT

F1

SI 15AT

C7
4n7
Y

10

1

2xS T92S7D12-24

K1
REL24V

V12
BC817-25
SMD

R8
22k
SMD

R9
22k
SMD

C6
4n7
Y

V11

V21

V22

R121 1k SMD

R7
22k
SMD

R6
22k
SMD

24

1

3

L5

2x2.1mH

16A

+24V

V23
LL4148
SMD

R17

4k7
SMD

R26 1k SMD

R60 1k SMD

COOLING

T835-600B

T835-600B

T835-600B

R19

100R
SMD

R27

100R
SMD

R61

100R
SMD

L1

2x2.1mH

16A

V20
LL4148
SMD

V26
BC817-25
SMD

+24V

R76
4R7

6

2

1

4

10

GND

C10
1u5
X

3

V5
1N5404

V2
1N5404

Bauhöhe beachten

6

4

6

4

6

4

R24

1

220R SMD

D1
S21ME4

2

GND

R31

1

220R SMD

D2
S21ME4

2

GND

R25

1

220R SMD

D3
S21ME4

2

GND

K3

8

REL24V
2xS T92S7D12-24

C63
1u5
X

11W

C3
1u5
X

V10
1N5404

C13
470u

50V
V6
1N5404

T2

120V / 24V 3.2VA

FAN2

FAN1

HEATING

R4
V130LA20A
VDR

BYPASS

R53

4k7
SMD

R123

R124

22k

22k

SMD

SMD

R122

R125

22k

22k

SMD

SMD

C49
1u5
X

C112

C82

10n

10n

Y

Y

R20

100R
SMD

R28

100R
SMD

R62

100R
SMD

R127
22k
SMD

R126
22k
SMD

R21

100R
SMD

R29

100R
SMD

R63

100R
SMD

R128
22k
SMD

R129
22k
SMD

24

C48
1u5

X

1

T1
120V / 18V 16VAmit PTC

R22

100R
SMD

R30

100R
SMD

R64

100R
SMD

V7

R10

SM4007

100R
SMD

SMD

~

BR2

12

BR6

12

U

120V only 230V only

V24

C1
100n
SMD

V14
SM4007
SMD

V13
SM4007
SMD

SM4007
SMD

+

R13

R12

R11

100R

100R

100R
SMD

V48
FAGOR FB2506L

+

with heat sink SK 09 37,5 SA K

SMD

SMD

~

-

BR3

12

BR7

12

C14
10n
Y

47-58kHz 5V +/- 4%

C106

+

470u

C107
100n

50V

SMD

V1

V16
SM4007

ZMM18

SMD

C19
470u
50V

V15
SM4007
SMD

R5
4k7

+

SMD

BR1

12

BR5

12

120V only

D12

LM2575T-5.0

1

+VIN

OUT

GND

OFF

3

5

V53

VCC

ZMM18

R14
10k
SMD

V54
ZMM18

POWER_FAIL

3

1

U1
SFH6106-3

4

2

SMD

GND

C4
220n
400V

C15
10n
Y

4

FB

2

V25

1N5822

V52
BD243

L4

330uH

2

1

BR4

230V
only

V18 7820

2

C16
100n
SMD

VI

Auxilary Intermediate Circuit

2

BR8

230V
only

1

C109

+

100u
40V

VO

GND

1

Intermediate Circuit

+

C84
1000u
200V

C81

1000u

200V

+

120V 120V
only

C108
100n
SMD

3

C2
100u
40V

ZK2

+325V

+

C83
1000u
200V

C8
1000u
200V

+

only

C110
100n
SMD

C17
100n
SMD

+

R2
150k
SMD

C12
1u5
X

R1
150k
SMD

0V

+24V

VDD

VCC

C111
100n
SMD

GND

VSS

+20V

0V

Edition: 04

04.07.02 AH

Main Board 184 - Power Supply

4-8

Multifuge 3S-R / 3L-R / Legend RT

RESET

/PHASE1

/PHASE2

/PHASE3

SCHEMATIC DIAGRAMS

All IGBT's with heat sink:

V29

D5

2

D10C

56

74HC14
SMD
D10B

VCC

C98
100n
SMD

GND

VCC

C97
100n
SMD

GND

VCC

C25

+

10u
SMD 25V TA

GND

VCC

C96
100n
SMD

GND

34

74HC14
SMD

D10A

12

74HC14
SMD

D9C

56

74HC14
SMD
D9B

34

74HC14
SMD

D9A

12

74HC14
SMD

D8C

56

74HC14
SMD
D8B

34

74HC14
SMD

D8A

12

74HC14
SMD

D10D

98

74HC14
SMD
D10E

11 10

74HC14
SMD

D10F

13 12

74HC14
SMD

D9D

98

74HC14
SMD
D9E

11 10

74HC14
SMD

D9F

13 12

74HC14
SMD

D8D

98

74HC14
SMD
D8E

11 10

74HC14
SMD

D8F

13 12

74HC14
SMD

R59

120R SMD

R58

120R SMD

R57

120R SMD

R56

120R SMD

R55

120R SMD

R54

120R SMD

T=2.5us

T=2.5us

T=2.5us

C104
0n
SMD

C103
0n
SMD

C102
0n
SMD

R120

4k7
SMD

R119

4k7
SMD

R117

4k7
SMD

C101
22n
SMD

Folie

C100
22n
SMD

Folie

C99
22n
SMD

Folie

3

D4

2

3

V37
BC817-25

GND

D14

2

3

D13

2

3

V9
BC817-25

GND

D36

2

3

D35

2

3

V8
BC817-25

GND

HCNW3120

HCNW3120

HCNW3120

HCNW3120

HCNW3120

HCNW3120

8

7
6

5

C31
100n
SMD

8

7
6

5

C33
100n
SMD

8

7
6

5

C34
100n
SMD

8

7
6

5

C35
100n
SMD

8

7
6

5

C32
100n
SMD

8

7
6

5

C36
100n
SMD

C28
100u

+

SMD 25V

C55
100u

+

SMD 25V

C29
100u

+

SMD 25V

C54
100u

+

SMD 25V

C30
100u

+

SMD 25V

C50
100u

+

SMD 25V

BA159

R33

15R

C43

SMD

0n
SMD

R34

15R

C38

SMD

0n
SMD

V28

BA159

R35

15R

C39

SMD

0n
SMD

R36

15R

C40

SMD

0n
SMD

V27

BA159

R37

15R

C41

SMD
0n
SMD

R38

15R
C42

SMD
0n

SMD

KUNZE KU 3-315/SO/VE

V35

IXGH20N60BU1

V33

IXGH20N60BU1

V34

IXGH20N60BU1

V32

IXGH20N60BU1

V31

IXGH20N60BU1

V30

IXGH20N60BU1

C105
100n
400V

C88
1u5
X

C89
1u5
X

+20V_switched

+325V

1

2

3

0V*

X122

WAGO 256-603

3
2
1

Motor

Edition: 04

04.07.02 AH

Main Board 184 - Inverter

4-9

Multifuge 3S-R / 3L-R / Legend RT

SCHEMATIC DIAGRAMS

NVRAM IIC
with DIP 8 Socket

GND

/LID_NEARLY_CLOSED

/LID_LOCK_CLOSED

/LID_LOCK_OPEN

OVER_PRESSURE

MOTOR_OVERTEMP

ELECTRONIC_OVERTEMP

/OVERVOLTAGE

/OVERCURRENT

Control Panel

C

BURNDY 4POL

RPM and
Imbalance
Sensors

W

BURNDY 4POL

Rotor
Identification

XR1

R

Burndy 3pol

Edition: 04

04.07.02 AH

1
2
3

POWER_FAIL

/LID_CLOSED

X11

1
2
3
4

abgew.

XW1

1
2
3
4

1

1

2

2

3

3

D15

E0
E1
E2
VSS4SDA

ST24E16

GND

1
2
3
4

1
2
3
4

GND

GND

GND

VCC
/WC
SCL

D29D

VCC

C44
100n
SMD

GND

VCC

GND

C11522p

C78
100n

SMD

GND

C69

100n

8

SMD

7
6
5

GND

D26B 74HC14 SMD

D26C 74HC14 SMD

56

98

13 12

13 12

D16F 74HC14 SMD

12

D29A 74HC14 SMD

11 10

D16E 74HC14 SMD

56

D29C 74HC14 SMD

34

D29B 74HC14 SMD

C23
10u

+

SMD 25V TA

GND

R100
10k
SMD

C77
100n
SMD

GND

R103

22k
SMD

GND

R101
10k SMD

VCC

C24
10u

+

SMD 25V TA

GND

R104

R107

4k7

4k7

SMD

SMD

D26A 74HC14 SMD

12

34

74HC14 SMD

D29F

74HC14 SMD

D26E
74HC14 SMD

11 10

C27
C60
10n
SMD

C62
100n
SMD

10u

SMD 25V TA

C61
10n
SMD

GND

GND

C56

2u2

D26D

+

GND

PT100
Temperature
Sensor

U

GND

74HC14

X5

+

GND

VCC

GND

VCC

C86
100n
SMD

U4A

2

3

74HC02

RPM_PULSE

C64
100n
SMD

GND

R90

100R

0.1%

1

1

2

2

GND

VCC

SMD

GND

SMD 20V TA

98

VCC

BURNDY 2POL

Reset Controller

1
2
3
4

C75
100n

SMD

Electronic Overtemperature active L
RPM Signal
Overvoltage active H
Motor Overtemp active L
Lid closed Signal active H
Overcurrent active H

Interface Module

1
3
5
7

9
11
13
15
17
19

1

Q1

BC807

R134-R143

D25

CONTROL
RESIN
CT
GND

TLC7705I

X15

+

+

+

+

+

+

+

+

+

+

+

+

+

+

+

+

+

+

+

+

CON20

R40

100R SMD

R95
100R
SMD

R99

4k7 SMD

2
4
6
8
10
12
14
16
18
20

VCC

GND

GND

1R0 SMD

1R0 SMDR145-R154

SENSE
RESET
RESET

11
13
15
17
19

VCCVCC

C5

8

VDD

7
6
5

C58
22p SMD

GND

C59
22p SMD

GND

SCL
SDA

X16

2

1

/RESOUT

+

+

4

3

/IRQ

+

+

6

5

SCLK

+

+

8

7

DETECT0

+

+

10

9

DETECT1

+

+

12

+

+

14

+

+

16

/CS

+

+

18

DOUT

+

+

20

DIN

+

+

CON20

C57
1n
SMD

C73
10n
SMD

C74
10n
SMD

100n SMD

RESET

5.0 MHz
J1

TP1
TP2
TP3
TP4

PT100 on/off

GND

AD0 Temp.
AD1 Temp.
AD2 Temp.
AD3 Temp.
Imbalance

CURRENT

VCC

R102
10R

SMD

C70
100n

SMD

GND

138
137

140
141

84

47
48
49
50
51
52
53
54
57
58
59
60
61
62
63
64

65
66
67
68
69
70
73
74
75
76
77
78
79
80
81

10
11
12
13
14
15
16

27
28
29
30
31
32
33
34
35
36
39
40
41
42
43
44

37
38

SAB80C167CR-LM
SMD

13 12

9

D30

XTAL1
XTAL2

/RESIN
/RESOUT

VPP

P2.0
P2.1
P2.2
P2.3
P2.4
P2.5
P2.6
P2.7
P2.8
P2.9
P2.10
P2.11
P2.12
P2.13
P2.14
P2.15

P3.0
P3.1
P3.2
P3.3
P3.4
P3.5
P3.6
P3.7
P3.8
P3.9
P3.10/TXD0
P3.11/RXD0
P3.12//BHE
P3.13
P3.15

P8.0
P8.1
P8.2
P8.3
P8.4
P8.5
P8.6
P8.7

P5.0
P5.1
P5.2
P5.3
P5.4
P5.5
P5.6
P5.7
P5.8
P5.9
P5.10
P5.11
P5.12
P5.13
P5.14
P5.15

VAREF
VAGND

5

6

U4B

74HC02

D26F

4

74HC14
SMD

VCC

82

72

56

46

17

VCC

VCC

VCC

VCC

GND

GND

GND

GND

83

71

55

45

18

C65

C66

C67

100n

100n

SMD

SMD

144

136

126

109

93

VCC

VCC

VCC

VCC

VCC

VCC

GND

GND

94

P0L0
P0L1
P0L2
P0L3
P0L4
P0L5
P0L6
P0L7
P0H0
P0H1
P0H2
P0H3
P0H4
P0H5
P0H6
P0H7

P1L0
P1L1
P1L2
P1L3
P1L4
P1L5
P1L6
P1L7
P1H0
P1H1
P1H2
P1H3
P1H4
P1H5
P1H6
P1H7

P4.0/A16
P4.1/A17
P4.2/A18
P4.3/A19
P4.4/A20
P4.5/A21
P4.6/A22
P4.7/A23

P6.0//CS0
P6.1//CS1
P6.2//CS2
P6.3//CS3

P6.4//CS4
P6.5//HOLD
P6.6//HLDA
P6.7//BREQ

P7.0
P7.1
P7.2
P7.3
P7.4
P7.5
P7.6
P7.7

/RD

/WR//WRL

/READY

ALE

/EA

/NMI

GND

GND

GND

GND

143

139

127

110

GND

U4C

8

9

74HC02
U4D

11

12

74HC02

GND

C68

100n

100n

SMD

GND

VCC

R91 R92 R93

GND

D6

D10
D11
D12

VCC

GND

C22
+

10u
SMD 25V TA

3*4k7
SMD

C21
100n
SMD

GND

EPROM 256k x 16 Bit

21
22
23
24
25
26
27
28
29
31
32
33
34
35
36
37
38
39

C71

100n

SMD

Lid Lock Control

/LID_LOCK_BRAKE
/LID_LOCK_ENABLE

LID_LOCK_DIRECTION

R3

VCC

5x4k7
SMD

11 10

12

34

56

98

D11

A0
A1
A2
A3
A4
A5
A6
A7
A8
A9
A10
A11
A12
A13
A14
A15
A16
A17

27C4002

D29E

74HC14

D16A

74HC14 SMD

D16B

74HC14 SMD

D16C

74HC14

D16D

74HC14

A1
A2
A3
A4
A5
A6
A7

GND

GND
GND
GND

R115

R113

4k7
SMD

VCC

/PHASE1
/PHASE2
/PHASE3

A8

R114

A9
A10
A11
A12

R118

A13D11

R105

A14

R106

A15
A16
A17
A18

VCC

GND

VCC

R116

4k7

4k7

SMD

SMD

R46

R48

R47

R45

Q0
Q1
Q2
Q3
Q4
Q5
Q6
Q7
Q8

Q9
Q10
Q11
Q12
Q13
Q14
Q15

VPP

/CE

/OE

VCC

VSS
VSS

VCC

GND

active HBypass active L

active H

active H

active H

active H

19

D0

18

D1

17

D2

16

D3

15

D4

14

D5

13

D6

12

D7

10

D8

9

D9

8

D10

7

D11

6

D12

5

D13

4

D14

3

D15

1

GND

2

20

40

VCC

11

GND

30

GND

C76
100n
SMD

SMD

SMD

SMD

BYPASS

HEATING

COOLING

FAN1

FAN2

SMD

100

D0

101

D1

102

D2

103

D3

104

D4

105

D5

106

D6

107

D7

108

D8

111

D9

112

D10

113
114

D12

115

D13

116

D14

117

D15

118
119

A1

120

A2

121

A3

122

A4

123

A5

124

A6

125

A7

128

A8

129

A9

130

A10

131

A11

132

A12

133

A13

134

A14

135

A15

85

A16

86

A17

87

A18

88
89
90
91
92

1
2
3
4
5
6
7
8

19
20
21
22

Heating active L

23

Cooling active L

24

Fan1 active L

25

Fan2 active L

26

95
96
97
98

99

142

10

13

Main Board 184 - Controller

4-10

Multifuge 3S-R / 3L-R / Legend RT

+20V

ZK2

+325V

0V

SCHEMATIC DIAGRAMS

Cooling Overpressure Switch

Motor Overtemperature Switch

Lid Switch

PPBBAA

X20

1

2

3

4

R75
10k
SMD

C46

100n

SMD

SFH6106-3

SMD

R80
10k
SMD

1

VCC

R144

1

U3

2

2

10k
SMD

3

4

GND

WAGO 256-606

5

6

VCC

GND

0.011 V/A

R23
47R
SMD

R87
1k2
SMD

R89
390R
SMD

R97
3k3
SMD

D18

1

VDD1

2

VIN+

3

VIN­GND14GND2

HCPL-7800

VCC

GND

0.24V

VCC

4

5

+

6

-

11

GND

VCC

4

3

+

2

-

11

GND

VCC

C53

100n
SMD

8
7
6
5

GND

Overcurrent Detector

10

GND

D19B

7

TLC2274C/SO

Acceleration Current
Limit +20A

D19A

1

TLC2274C/SO

Braking Current
Limit -20A

R81
10k
SMD 1%

R67

10k SMD 1%

R79 10k SMD 1%

R85
220k
SMD

4

+

9

­TLC2274C/SO

11

VCC

3.76V

GND GND

VDD2
VOUT+
VOUT-

SMD 1%

D19C

8

VCC

R98
4k7
SMD

V39

LL4148

V40

LL4148

R84
18k

GND

R83
15k
SMD 1%

GNDGNDGND

C113

1n
SMD

C80
1n
SMD

/OVERCURRENT

R112
47k
SMD

VCC

C79

100n
SMD

4

12

+

13

-

11

GND

GND

D19D

14

TLC2274C/SO

R82

10k SMD 1%

C85 1n SMD

F3

THERMO SWITCH
P87 75 05 100 5A
mounted on heat sink of V33

VCC

R49
10k
SMD

VCC

R18
10k
SMD

3

4

GND

1

2

D23
SFH6106-3
SMD

R39

10k

SMD

ELECTRONIC_OVERTEMP

3

D17
SFH6106-3
SMD

4

GND

MOTOR_OVERTEMP

OVER_PRESSURE

SMD 1%

R70
470k
SMD 1%

R71
470k
SMD 1%

R68

R66
10k
SMD 1%

R72
470k
SMD 1%

R73
470k
SMD 1%

68k
SMD

C47
22p
SMD

C72
22p
SMD

R69
10k

R32

1k8 SMD

R50

1k8 SMD

2 Brake Resistors

D

R65

2M2
SMD

7

1

3

+

2

-

4

5

Dynamic Overvoltage Detector

Active, if the Motor
supplies Energy

V38

ZMM 5.1

XD1

1

2

3

4

Phoenix-Klemme

IGBT V50 with heat sink:
KUNZE KU 3-315/SO/VE

STW15NB50

D21

6

R74

TL081/SO

15R
SMD

V17
BA159

V50

C52

100n
SMD

C51

10n SMD

R88 0R022 4W

R52 0R022 4W

R96
470R
SMD

R86
3k9
SMD

R94
220R
SMD

R77
22k
SMD

C87
100n
SMD

V36
P6KE440A

1

2

C18
100u
SMD 25V +

R51

4R7
SMD

VCC

R78
10k
SMD

3

D22
SFH6106-3
SMD

4

GND

CURRENT

2V + 0.088 V/A

GND

R15
10k
SMD

C45
100n
SMD

Overvoltage Detector
Active, if Brake Resistor
is defect or Line Voltage
is much too high

C114
10n
SMD

VCC

1

2

GND

+20V_switched

/OVERVOLTAGE

R16
10k
SMD

3

U2
SFH6106-3
SMD

4

0V*

/LID_CLOSED

Edition: 04

04.07.02 AH

Main Board 184 - Protection Circuit

4-11

Multifuge 3S-R / 3L-R / Legend RT

/LID_LOCK_BRAKE

LID_LOCK_DIRECTION

/LID_LOCK_ENABLE

SCHEMATIC DIAGRAMS

VCC

C95
100n
SMD

GND

2

/BRAKE

3

VCC

VCC

R108
22k

C37

SMD

1n
SMD

GNDGND

X14

2

1

GND

+

+

3

+

+

5

+

+

7

+

+

9

+

+

CON10AP

/LID_NEARLY_CLOSED

/LID_LOCK_CLOSED

/LID_LOCK_OPEN

4
6
8
10

GND

REF

4

RC

13

PHASE

14

/ENABLE

17

SENSE

27

MODE

D6 A3952SEB

VCC

C26
100n
SMD

GND

12

VCC

GND

GND

GND

GND

GND

GND

GND

GND

GND

GND

GND

GND

GND

GND

5

6

7

8

9

10

11

19

20

21

22

23

24

25

GND

R41
1R
SMD

LOAD_SUPPLY
LOAD_SUPPLY

OUT_B
OUT_A

EMITTERS

R42
1R
SMD

RPM_PULSE

15
1

28
16

18

R43
1R
SMD

GNDGNDGNDGND

+24V+24V

C90

C91

C20
100n
SMD

GNDGNDGND

T1 = 0.25sec

4538 SMD

2

1

4
5

VCC

+

470u

50V

D7A

6

RC

Q

CX

+T

-T
7

R

Q

3

Speed

0

<120RPM

>120RPM

100n
SMD

R44
1R
SMD

VCC VCC

R109
3M3
SMD

C92

100n

SMD

GND

VCC

RELAIS FINDER30.22 24V

10 11

+24V

V3 LL4148

R110
4M7
SMD

GND

Pin 6 Pin 9

Low

Pulse

High

K2

17
4
39
6

HF-DROSSEL

VCC

GND

T2 = 1.5 * T1

D7B

4538 SMD

C93

14

100n

15

SMD

12
11

High

High

Low

HF-DROSSEL

L2

C94
100n
SMD

RC

CX

+T

-T
R

13

L3

10

Q

R111

9

Q

10k
SMD

X13

1

2

WAGO 256-602

GND

Lid Lock DC Motor

V4
BC817-25

Edition: 04

04.07.02 AH

Main Board 184 - Lid Lock Control

4-12

Multifuge 3S-R / 3L-R / Legend RT

SCHEMATIC DIAGRAMS

Edition: 04

04.07.02 AH

Component Plan Main board

4-13

Multifuge 3S-R / 3L-R / Legend RT

SCHEMATIC DIAGRAMS

Edition: 04

04.07.02 AH

Component Plan Main board

4-14

Multifuge 3S-R / 3L-R / Legend RT

SCHEMATIC DIAGRAMS

Edition: 04

04.07.02 AH

Seven segment LED

1mm

distance plate of non conducting material

Seven segment LEDs

PCB

LED's

LED’s HLMP on sockets

with pins to top

8,5mm

Line verification of HLMP 3mm

KA

PCB

Component Plan Key and Indication board / Keypad version

4-15

876

Top view

TDSG 5150-M

10 9 8e67

54321

10 9

f

12

a

g

c

d

345

b

DP

Multifuge 3S-R / 3L-R / Legend RT

SCHEMATIC DIAGRAMS

Drehknopf - Version / Rotary switch version

Edition: 04

04.07.02 AH

Seven segment LED

1mm

distance plate of non conducting material

Seven segment LEDs

PCB

LED's

LED’s HLMP on sockets

with pins to top

8,5mm

Line verification of HLMP 3mm

KA

PCB

Component Plan Key and Indication board / Rotary switch version

4-16

876

Top view

TDSG 5150-M

10 9 8e67

54321

10 9

f

12

a

g

c

d

345

b

DP

Multifuge 3S-R / 3L-R / Legend RT

SCHEMATIC DIAGRAMS

Speed and Imbalance Detection Board P/N 70902651

Speed and Imbalance Detection Board P/N 20150214

Edition: 04

04.07.02 AH

Component Plan Speed and Imbalance detection board

4-17

Multifuge 3S-R / 3L-R / Legend RT

SCHEMATIC DIAGRAMS

180mm

Edition: 04

04.07.02 AH

Polarization NousePolarization Nouse

Component Plan Sensor board

4-18

Pin 1

Multifuge 3S-R / 3L-R / Legend RT

Old version of PCB

SCHEMATIC DIAGRAMS

max 16.45

R4A

C2A

R6A

D2A

R3A

R1A

R2A

R5A

C1A

D1A

R7A

Dimensions of cast PCB

min 3.11min 3.11

34.3

X3A

X2A

X1A

min 3.11

max 2.86

R

3

2
1

R

Wires are to guide lateral out of insulating compound

Edition: 04

04.07.02 AH

PCB

insulating compund

Insulating compound must not stand out below.

min 1.8
max 2.4

max.4.0

Component Plan Rotor detection board

4-19

Multifuge 3S-R / 3L-R / Legend RT

SCHEMATIC DIAGRAMS

X3A

X1A

X2A

PCB

R3A

R7A

34.3

34.3

D2A

R1A

R2A

R5A

C1A

R4A

R6A

D1A

C2A

Dimensions of cast PCB

34,3

min. 3,11 min. 3,11

min 3.11

min 3.11

max. 4

min 3.11

min 3.11

max 16.45

max 16.45

max. 16,45

min 1.8

min 1.8

max 2.4

max 2.4

min 0

min 0

max 1.4

max 1.4

Edition: 04

04.07.02 AH

insulating compund

Wires are to guide down side out of insulating compound

R

R

Component Plan Rotor detection board

4-20

Multifuge 3S-R / 3L-R / Legend RT

Condenser

Fan for Cooling Plant

SCHEMATIC DIAGRAMS

Evaporator Chamber

J

U

25°C

J

P

J

F

Edition: 04

04.07.02 AH

= f(n, - , rotor)

J

J

A

C

Liquid Collector + Dryer

J

S

U

J

S

0,510 kg (5bar)
R134A

CPU

Pressure

Switch

21bar

c.o.

>P

10 bar
c.i.

Compressor

Function Diagram of the Cooling Plant

4-21

Thermostatic Expansion Valve

TC

TLK 0.7, MOP -5°C

Multifuge 3S-R / 3L-R / Legend RT

The index numbers stated in ( ) reappear within the spare part figures (block diagram, schematic
diagram of cooling plant) and the spare part lists. Due to cooled and non-cooled version are
described not all parts can be available.

5.1 Dismantling the Housing

5.1.1 Front Panel (800)

• Open the lid, switch off the unit and pull out the mains plug

• Remove screws underneath of the front-panel

• Move the panel right or at newer units, to the top and take it off

• Disconnect wiring from display board

5.1.2 Lid (620)

• Open the lid, switch off the unit and pull out the mains plug

• Knock carefully the joint bolts (511) for upper attaching of gas lid stays (515) out of joint blocks

(610) with its three notches ahead by use of a hammer and pin punches (but press the bolts in
with non notches ahead by use of pliers)

• Push an adequate screw driver into one bolt’s place to keep the gas lid stay in position to avoid
lid’s slamming

• Remove the 6 screws for lid’s attaching on both hinges

• Take the screw driver out of joint blocks to separate lid from gas stay and remove the lid from

casing

• When reassembling the lid take care that both bolt keepers (605) engage the lock entries
concentric and stand out of the screw-in hollow exactly for 36mm

5.1.3 Casing (500)

• Remove the front panel (800) - see 5.1.1

• Remove the lid (620) - see 5.1.2

• Remove main board – see 5.2.2

• Remove the 4 remaining screws on both sides

• Disconnect the grounding line and remove the casing with lid (500) and bolt holes sealing in

vertical position from armoured chamber and frame

• Reassemble the casing analogously in reverse order and take care of the correct lid sealing seat
(320)

5.1.4. Automatic Lid Locking System (475)

• Dismantle the front panel (800) - see 5.1.1

• Dismantle main board – see 5.2.2

• Disconnect plug X13 turn the motor with help of an auxiliary voltage DC 12V into a position that

you can remove the 3 screws

• Remove lower nut of the latch holder bar

• Remove latch holder bar

• Disconnect wiring of micro switches and flat cable on PCB attached to gear motor

• Remove 4 set screws (2 x 2) in positioner

• Reinstall the latch and gear motor in reverse order

• Make sure that the center micro-switch is proper adjusted

• Move latch to the maximum top position, loose the two screws of micro switch move it until it

“clicks”

• Check by driving the latch up and down with help of auxiliary voltage

Edition: 03 Servicing Schedule

13.0301/he/AH Page: 5 - 1

Legend RT

Multifuge 3S-R/3L-R

5.1.5 Gas Lid Stays (515)

• Open the lid, switch off the unit, pull out the mains plug and remove the rotor

• Remove the lid - see 5.1.3

• Remove the casing - see 5.1.4

• Remove the attaching screws for the lower joint blocks

• Knock carefully the joint bolts (511) for lower attaching of gas lid stays (515) out of joint blocks

(610) with its three notches ahead by use of hammer and pin punches (but press the bolt in
with non notches ahead by use of pliers)

• Replace both worn out gas lid stays and reinstall the new gas lid stays analogously in reverse
order and remount the unit completely.

5.2 Replacement of Electrical Components

5.2.1 NV-RAM, E-PROM on the Main Board

• Notice old displayed identification and version numbers of E-PROM and NV-RAM when powering
on (2./3. No. in sequence)

• See wiring diagram and remove the front panel (800) - see 5.1.1

• Remove main board - see 5.2.2

• ATTENTION - CMOS components! Discharge your body before handling! Pull CPU

and/or NV-RAM carefully out of socket using chip removal tool

• Reinsert the new IC’s correctly

• Put the front panel back in position, switch power ON, check the displayed identification and

version numbers of the new ICs and refit the front panel

5.2.2 Main Board Replacement (700)

• dismantle the front panel (800) - see 5.1.1

• Remove the screws which fasten the board and place it in front of the unit

• Remove all wires from the terminals by pressing the lever. Unplug XC, XR, XU*, XW. Only the

main cable is fastened in a screwed terminal.

• touch a grounded receptacle to discharge your body before touching the sensitive CMOS
components! Take the new CPU and/or NV-RAM out of box (or re-use the old ones when in
perfect condition) and insert them into sockets of the new main board (if necessary, remove the

placed but non-programmed NV-RAM before)

• remount the new main board with all nuts and washers

• Do not mix up disconnected cables during re-connection!

• Reassemble the device in reverse order and perform a test run, making sure the drive turns in

the right direction (see imprinted arrow on rim of rotor chamber)!

5.2.3 Key and Display Board (810)

• Remove the front panel (800) - see 5.1.1

• Remove the attaching screws and take out the indication board

• Unplug the connecting line to main board and transfer to new board

• Reassemble the indication board analogously in reverse order, check controller identification and

refit the front panel

5.2.4 Rotor Indication Board (137)

• The sensor board is placed on the motor and fixed at the pins with Loctite. It can be easily
removed by pulling carefully.

Edition: 03 Servicing Schedule

13.0301/he/AH Page: 5 - 2

Legend RT

Multifuge 3S-R/3L-R

5.2.5 Speed Detection Board (140)

• Remove the drive with mounting plate - see 5.3.2 and deposit upside down

• Remove the screws and lock washers and take out the board

• Unplug the connecting line to main board and transfer to new detection board

• Remount the speed detection board (plug position: left to back), reassemble the unit analogously

in reverse order and perform a test run

5.2.6 Fans

• Condenser fan, right side: (235):

• Remove front panel see 5.1.1

• Remove main board see 5.2.2

• Take fan apart

5.2.7 Brake Resistor (255/256)

• Remove front panel - see 5.1.1

• Remove the main board – see 5.2.2

• Remove housing only in case of resistor change

• Check the resistance of both brake resistors and replace defective resistor(s)

• Check thermos switch on R 2

• Check the cleanliness of air louvers and clean them if necessary, pay attention to good heat

transmission

• Reassemble the device analogously in reverse order. Perform some short test runs with max
brake curve.

5.3 Replacement of Drive Components

5.3.1 Drive Motor (135)

• Remove Motor cover with sensor cover

• Remove the front panel and main board - see 5.1.1 and 5.2.2

• Disconnect the leads for motor X122 (U,V,W), over temperature switch X20, unplug the

grounding wire PE from casing’s receptacle

• Remove ferroxcube from the motor wires in front safety chamber and tie a string for easier pulling
afterwards

• Remove rotor recognition board and put it on side

• Remove temperature sensor (if available)

• Unscrew motor take it off

• Remove speed detection board and reinstall it at the new motor

5.3.2 Motor rubber Mounts (104)

• Remove motor – see 5.3.1

• Place unit on 4 blocks of wood (10 to 15 cm)

• Remove 10 screw underneath base plate

• Base plate will not come off

• Turn the base plate 1,5 cm until the holder screws allow to remove the plate

• Inspect the rubber mounts and if necessary replace them

• All 6 rubber mounts must only be exchanged completely!

• Take care that the safety screws will not be damaged or loosen (non-cooled version only)

Edition: 03 Servicing Schedule

13.0301/he/AH Page: 5 - 3

Legend RT

Multifuge 3S-R/3L-R

5.3.3 Adjustment of the micro switch (center of Latch system)

• Remove front-panel and main board see 5.1.1 and 5.2.2

• Move the latch sleigh to the maximum top by help of auxiliary voltage

• Loosen the two screws of the micro-switch and move it in a position that a clear click can be

heard + 0,5 to 1mm – check with multimeter for zero ohm

• Connect motor to power supply and make sure that the switch is functioning well

• Secure the bolts with paint

5.4 Replacement of Parts of the Cooling Plant*

First of all is to figure out that high ambient temperatures (ϑU >35°C), insufficient heat transfer (e.g.
polluted condenser, de-heater, air gaps) or electrical errors (like defective fans, sensor or main board,
starting relay or capacitor) can be excluded from the cooling problem (see function diagram of cooling
plant 4-10: pressure / temperature ranges are valid for continuous cooling at max. speed, ϑU=25°C)!
Procedure for replacing defective components of the cooling cycle:

• Dismantle the casing -see 5.1.and mount pierce valves onto the service lines

• When gauging too little static pressure perform a leakage test (N2 max. 25bars)

• Discharge the refrigerant with suction device into recycling bottle

• In case of compressor (200) fault, let the oil run out into a bowl to recycle it

• Unsolder defective component(s) and replace the dryer/collector assy (235), too

• Let a little amount of dry nitrogen gas stream through the tubes when soldering to avoid scaling

on the tube’s inner surface

• Do the evacuation and refill the system with the exact amount of liquid refrigerant on the pressure
side via a new external dryer (check amount with a balance or filling cylinder, re-solder the
service lines tight after finishing work)

• Reassemble the device and perform a cooling power test run.

Charging information 120 V version:

Refrigerant: R 134a
Amount: 510 grams (17,8 oz)

Operating pressure with rotor 75006445 and round buckets 75006441, n = 3750 rpm

Ambient: 23°C (73°F)
Temperature selection: minimum
Time: 3 hours
Suction: 1,9 +/-0,1 bars (-12 °C) 27,15 psi
Discharge: 7,5 bars (30 °C) 107,2 psi

Edition: 03 Servicing Schedule

13.0301/he/AH Page: 5 - 4

Legend RT

Multifuge 3S-R/3L-R

BREAK DOWN DRAWINGS

138

137

136

140

142
141

135

231

130

105

104

105

125
126
127

231

170

171

100

171

127
161

160
161

150

151

152

153

121

105

120

110

Edition: 04

05.07.02 AH

106

103

101

Bottom Plate

6-1

109

102

107/112

108

111

231

Multifuge 3S-R / 3L-R / Legend RT

BREAK DOWN DRAWINGS

250

237

126

236

251

682

681

240

141

231

265

257

256

255

106

222

200

223

220

270

271

272

221

230

231

Edition: 04

05.07.02 AH

235

260

224

Bottom Plate

6-2

Multifuge 3S-R / 3L-R / Legend RT

335

BREAK DOWN DRAWINGS

326

310

325

320

305

315

330

257

336

340

337

Edition: 04

05.07.02 AH

20mm

Lid lock see page 6-4

170

Bottom Plate

6-3

300

Multifuge 3S-R / 3L-R / Legend RT

BREAK DOWN DRAWINGS

Parts for left and right lid lock are the same

416

415

410

406

141

405

400

417

420

432

465

212

461

470

471

476

461

460

454

452

451

450

441

440

425

453

442

430

126
431

Edition: 04

05.07.02 AH

481

231

480

481

231

Lid Lock System

6-4

475

170

170

231

Multifuge 3S-R / 3L-R / Legend RT

Parts for the lid see page 6-6

515

511511

BREAK DOWN DRAWINGS

521

520

535

505

511

516

510

511

682
681

680

685

525

530

500

540

511

511

Edition: 04

05.07.02 AH

Housing

6-5

Multifuge 3S-R / 3L-R / Legend RT

BREAK DOWN DRAWINGS

635

640

645

631

630

685

600

607

606

605

621

670

620

511

535

682
681
680

212

510

511

257

650

Edition: 04

05.07.02 AH

511

671

660

Lid

6-6

Multifuge 3S-R / 3L-R / Legend RT

BREAK DOWN DRAWINGS

713

712

730

714

720

721

1

2

3

4

SORVALL

711

0

®

LEGEND

0

RT

710

715

715

rpm

x

x

g

g

700

770

725

701

735

740

702

703

700

Edition: 04

05.07.02 AH

Parts for front panel see page 6-8

Front Panel

6-7

Multifuge 3S-R / 3L-R / Legend RT

0

MULTIGUGE 3

1

2

3

4

MULTIGUGE 3

L-R

BREAK DOWN DRAWINGS

820

0

L-R

825

min

-1-1

xg

x

g

825

0

min

-1-1

xg

x

g

846

845

810

521

811

800

810

820

826

Edition: 04

05.07.02 AH

Front Panel

6-8

840

830

236

831

Multifuge 3S-R / 3L-R / Legend RT

BREAK DOWN DRAWINGS

900

901

910

911

Edition: 04

05.07.02 AH

730

Accessories

6-9

735

740

Multifuge 3S-R / 3L-R / Legend RT

Spare-Part-List

Index

to Serial-No.

-

75004374

01

Kendro Laboratory Products

Plant Osterode

MULTIFUGE 3L-R 120V/60HZ

from Serial-No.

00100 70056704 Base
00101 20460089 SCREW M5X5
00102 20057535 Motorchassis
00103 20510292 SCREW
00104 20022874 ANTIVIBRATION MOUNT
00105 10104080 WASHER (SAND)
00106 20420167 NUT
00107 20057828 Noise reducer
00108 20057826 Weight
00109 20510356 Bolt
00110 20057827 Noise reducer
00111 70060304 Metallsheet
00112 20057941 Insulation
00120 20300084 FOOT
00121 20510247 Screw M8x12
00125 70057541 Chassis cover
00126 20480244 LOCK WASHER
00127 20460092 ALLEN SCREW M4 X 6
00130 70057534 Motorchassis
00135 20210390 MOTOR 125/45 3PH
00136 20056798 Insulation
00137 20150180 ROTOR RECOGNITION
00138 20510350 Bolt
00140 20150214 Speed and imbalance recognition
00141 20460097 Z-SCREW M3 X 8
00142 20480242 SECURING WASHER
00150 20180608 RECEPTACLE
00151 20440023 SCREW M3 X 8
00152 20460090 SCREW M4X12
00153 20420076 HEXAGONAL NUT M4
00160 20180138 CONNECTOR
00161 20480108 FAN WASHER A 4,3
00170 20170329 Ferroxcube ring
00171 20170330 FERROXCUBE
00200 20240607 Compressor SC 12 GX 115V/60Hz
00220 20056700 CONDENSOR
00221 20057488 Insulation
00222 20057487 Insulation

40031227

Partno.

Text

Donnerstag, 22. November 2001

Seite 1

Spare-Part-List

Index

to Serial-No.

-

75004374

01

Kendro Laboratory Products

Plant Osterode

MULTIFUGE 3L-R 120V/60HZ

from Serial-No.

00223 20056735 COVER
00224 20510354 Screw
00230 70056716 Bracket Fan­00231 20510292 SCREW
00235 20210397 MOTOR FAN 115 V
00236 20480224 WASHER A 4,3
00237 20430207 SCREW M 4 X 10
00240 70056705 Evaporatorchassis
00250 70904335 Evaporator complete
00251 20430212 SCREW M 5 X 16
00255 20160733 RESISTOR 120 OHM
00256 20160734 RESISTOR 120 OHM
00257 20510352 Screw
00260 70904550 Resistor 100 Ohm F. Multi 3 R 120V
00265 20160737 CAPACITOR 4UF/400V
00270 20240577 FILTERDRYER
00271 20220598 Clip
00272 20440221 SCREW M 6 X 16
00300 20240592 HIGH PRESSURE CONTROLL SWITC
00305 20240608 Injection valve
00310 20056748 SEAL
00315 20290556 Insulation
00320 20290673 Insulation Armaflex
00325 20056761 MOTORCOVER
00326 20460103 SCREW M 3 X 12
00330 20055509 SUPPORT
00335 20140602 Sensor Temp. PT 100
00336 20250074 WASHER
00337 20470253 SCREW, PLASTIC
00340 70057552 Metall sheet
00400 20210391 MOTOR W GEAR
00405 20056715 Holder
00406 20460163 Screw
00410 20150186 PCB SENSOR
00415 70904339 COUPLING
00416 20510288 Set screw
00417 20440285 SCREW
00420 70056790 Sheet, left

40031227

Partno.

Text

Donnerstag, 22. November 2001

Seite 2

Spare-Part-List

Index

to Serial-No.

-

75004374

01

Kendro Laboratory Products

Plant Osterode

MULTIFUGE 3L-R 120V/60HZ

from Serial-No.

00425 70056789 Sheet, right
00430 20056737 Slideplate
00431 20460092 ALLEN SCREW M4 X 6
00432 20220586 INSULATION
00440 20056738 Roller
00441 20056739 Bolt 4
00442 20420107 NUT M 6 LEFT
00450 20056792 HOLDER LATCH PROTECTION
00451 20350242 Spring
00452 20056791 LATCH PROTECTION
00453 20460202 Screw Ejot
00454 20057932 Insulation
00460 20180677 SWITCH
00461 20460157 Bolt M 2,3
00465 70056718 Bracket, Latch­00470 20180654 SWITCH
00471 20057257 Holder sheet
00475 70904336 LATCH ASSY
00476 20350241 Clip
00480 20056707 Bar
00481 20420070 NUT M 6
00500 70056726 Housing
00505 20057830 Grill
00510 20056650 HOLDER
00511 20510285 SCREW M5 X 12
00515 20310439 GAS LID STAY
00516 20490287 PIN
00520 20056766 SEAL
00521 20510294 SCREW M3 X 10
00525 20310442 Puller
00530 20057553 Holder, Tool­00535 20056736 HINGE
00540 20056795 Panel, right
00600 70056741 Insert
00605 20057217 HOOK
00606 20480236 SECURING WASHER
00607 20420121 NUT M 10 X 1,25
00620 70904183 Cover, door

40031227

Partno.

Text

Donnerstag, 22. November 2001

Seite 3

Spare-Part-List

Index

to Serial-No.

-

75004374

01

Kendro Laboratory Products

Plant Osterode

MULTIFUGE 3L-R 120V/60HZ

from Serial-No.

00621 20420201 Nut
00630 20056731 Insulation, door
00631 20056762 Spacer
00635 20057563 Spacer
00640 20056734 Insulation small
00645 20056728 INSERT
00650 20057833 Seal
00660 20510360 Screw M5
00670 20056732 Window
00671 20056625 WINDOW, LOWER PART
00680 20510021 SCREW M 5 X 12
00681 20480200 WASHER
00682 20480167 FAN WASHER A 5,1
00685 20310504 Cover
00700 20150184 MAINBOARD 120V
00701 70904557 NV RAM
00702 70000528 PROCESSOR MAIN Legend 0528V07
00703 20230172 FUSE 15 A
00710 70060305 Cover
00711 20500200 Spacer
00712 20480300 Washer M4
00713 20420200 Nut M4
00714 20470263 Screw
00715 20440284 SCREW M 4 X 8
00720 20510293 Screw
00721 20480130 WASHER 4,3
00725 20180671 SWITCH W OVERLOADPROT. 16 A
00730 20190300 Cordset NEMA 5-15P 15A/125V 3x14A
00735 20360073 SCREW DRIVER
00740 20904430 COLLET CHUCK
00770 20310508 String w washer
00800 70060312 Frontpanel
00810 20150191 DISPLAY PCB
00811 20480124 WASHER
00820 20057551 Frontplate
00825 20057905 Overlay Multifuge 3L-R
00826 20310443 Knob f. Quickcontrolpanal Multifuge
00830 20056759 FRONTPANEL SIDE

40031227

Partno.

Text

Donnerstag, 22. November 2001

Seite 4

Spare-Part-List

Index

to Serial-No.

-

75004374

01

Kendro Laboratory Products

Plant Osterode

MULTIFUGE 3L-R 120V/60HZ

from Serial-No.

00831 20460164 Screw
00840 20290664 seal
00845 20057560 Spacer
00846 20460161 SCREW
00900 20057916 Operating instruction
00901 20057821 Short Instruction for Multifuge 3S engl.
00910 20057914 Instruction
00911 20057915

40031227

Partno.

Text

Donnerstag, 22. November 2001

Seite 5

Spare-Part-List

Index

to Serial-No.

-

75004375

01

Kendro Laboratory Products

Plant Osterode

MULTIFUGE 3 S-R, 120V/60HZ

from Serial-No.

00100 70056704 Base
00101 20460089 SCREW M5X5
00102 20057535 Motorchassis
00103 20510292 SCREW
00104 20022874 ANTIVIBRATION MOUNT
00105 10104080 WASHER (SAND)
00106 20420167 NUT
00107 20057828 Noise reducer
00108 20057826 Weight
00109 20510356 Bolt
00110 20057827 Noise reducer
00111 70060304 Metallsheet
00112 20057941 Insulation
00120 20300084 FOOT
00121 20510247 Screw M8x12
00125 70057541 Chassis cover
00126 20480244 LOCK WASHER
00127 20460092 ALLEN SCREW M4 X 6
00130 70057534 Motorchassis
00135 20210390 MOTOR 125/45 3PH
00136 20056798 Insulation
00137 20150180 ROTOR RECOGNITION
00138 20510350 Bolt
00140 20150214 Speed and imbalance recognition
00141 20460097 Z-SCREW M3 X 8
00142 20480242 SECURING WASHER
00150 20180608 RECEPTACLE
00151 20440023 SCREW M3 X 8
00152 20460090 SCREW M4X12
00153 20420076 HEXAGONAL NUT M4
00160 20180138 CONNECTOR
00161 20480108 FAN WASHER A 4,3
00170 20170329 Ferroxcube ring
00171 20170330 FERROXCUBE
00200 20240607 Compressor SC 12 GX 115V/60Hz
00220 20056700 CONDENSOR
00221 20057488 Insulation
00222 20057487 Insulation

40031227

Partno.

Text

Donnerstag, 22. November 2001

Seite 1

Spare-Part-List

Index

to Serial-No.

-

75004375

01

Kendro Laboratory Products

Plant Osterode

MULTIFUGE 3 S-R, 120V/60HZ

from Serial-No.

00223 20056735 COVER
00224 20510354 Screw
00230 70056716 Bracket Fan­00231 20510292 SCREW
00235 20210397 MOTOR FAN 115 V
00236 20480224 WASHER A 4,3
00237 20430207 SCREW M 4 X 10
00240 70056705 Evaporatorchassis
00250 70904335 Evaporator complete
00251 20430212 SCREW M 5 X 16
00255 20160733 RESISTOR 120 OHM
00256 20160734 RESISTOR 120 OHM
00257 20510352 Screw
00260 70904550 Resistor 100 Ohm F. Multi 3 R 120V
00265 20160737 CAPACITOR 4UF/400V
00270 20240577 FILTERDRYER
00271 20220598 Clip
00272 20440221 SCREW M 6 X 16
00300 20240592 HIGH PRESSURE CONTROLL SWITC
00305 20240608 Injection valve
00310 20056748 SEAL
00315 20290556 Insulation
00320 20290673 Insulation Armaflex
00325 20056761 MOTORCOVER
00326 20460103 SCREW M 3 X 12
00330 20055509 SUPPORT
00335 20140602 Sensor Temp. PT 100
00336 20250074 WASHER
00337 20470253 SCREW, PLASTIC
00340 70057552 Metall sheet
00400 20210391 MOTOR W GEAR
00405 20056715 Holder
00406 20460163 Screw
00410 20150186 PCB SENSOR
00415 70904339 COUPLING
00416 20510288 Set screw
00417 20440285 SCREW
00420 70056790 Sheet, left

40031227

Partno.

Text

Donnerstag, 22. November 2001

Seite 2

Spare-Part-List

Index

to Serial-No.

-

75004375

01

Kendro Laboratory Products

Plant Osterode

MULTIFUGE 3 S-R, 120V/60HZ

from Serial-No.

00425 70056789 Sheet, right
00430 20056737 Slideplate
00431 20460092 ALLEN SCREW M4 X 6
00432 20220586 INSULATION
00440 20056738 Roller
00441 20056739 Bolt 4
00442 20420107 NUT M 6 LEFT
00450 20056792 HOLDER LATCH PROTECTION
00451 20350242 Spring
00452 20056791 LATCH PROTECTION
00453 20460202 Screw Ejot
00454 20057932 Insulation
00460 20180677 SWITCH
00461 20460157 Bolt M 2,3
00465 70056718 Bracket, Latch­00470 20180654 SWITCH
00471 20057257 Holder sheet
00475 70904336 LATCH ASSY
00476 20350241 Clip
00480 20056707 Bar
00481 20420070 NUT M 6
00500 70056726 Housing
00505 20057830 Grill
00510 20056650 HOLDER
00511 20510285 SCREW M5 X 12
00515 20310439 GAS LID STAY
00516 20490287 PIN
00520 20056766 SEAL
00521 20510294 SCREW M3 X 10
00525 20310442 Puller
00530 20057553 Holder, Tool­00535 20056736 HINGE
00540 20056795 Panel, right
00600 70056741 Insert
00605 20057217 HOOK
00606 20480236 SECURING WASHER
00607 20420121 NUT M 10 X 1,25
00620 70904183 Cover, door

40031227

Partno.

Text

Donnerstag, 22. November 2001

Seite 3

Spare-Part-List

Index

to Serial-No.

-

75004375

01

Kendro Laboratory Products

Plant Osterode

MULTIFUGE 3 S-R, 120V/60HZ

from Serial-No.

00621 20420201 Nut
00630 20056731 Insulation, door
00631 20056762 Spacer
00635 20057563 Spacer
00640 20056734 Insulation small
00645 20056728 INSERT
00650 20057833 Seal
00660 20510360 Screw M5
00670 20056732 Window
00671 20056625 WINDOW, LOWER PART
00680 20510021 SCREW M 5 X 12
00681 20480200 WASHER
00682 20480167 FAN WASHER A 5,1
00685 20310504 Cover
00700 20150184 MAINBOARD 120V
00701 70904552 NV-RAM PRV MULTI 3S-R / 120V 045
00702 70000528 PROCESSOR MAIN Legend 0528V07
00703 20230172 FUSE 15 A
00710 70060305 Cover
00711 20500200 Spacer
00712 20480300 Washer M4
00713 20420200 Nut M4
00714 20470263 Screw
00715 20440284 SCREW M 4 X 8
00720 20510293 Screw
00721 20480130 WASHER 4,3
00725 20180671 SWITCH W OVERLOADPROT. 16 A
00730 20190300 Cordset NEMA 5-15P 15A/125V 3x14A
00735 20360073 SCREW DRIVER
00740 20904430 COLLET CHUCK
00770 20310508 String w washer
00800 70060312 Frontpanel
00810 20150190 DISPLAY PCB
00811 20480124 WASHER
00820 20057550 FRONT
00825 20057904 Overlay
00830 20056759 FRONTPANEL SIDE
00831 20460164 Screw

40031227

Partno.

Text

Donnerstag, 22. November 2001

Seite 4

Spare-Part-List

Index

to Serial-No.

-

75004375

01

Kendro Laboratory Products

Plant Osterode

MULTIFUGE 3 S-R, 120V/60HZ

from Serial-No.

00840 20290664 seal
00845 20057560 Spacer
00846 20460161 SCREW
00900 20057916 Operating instruction
00901 20057821 Short Instruction for Multifuge 3S engl.
00910 20057914 Instruction
00911 20057915

40031227

Partno.

Text

Donnerstag, 22. November 2001

Seite 5

Spare-Part-List

Index

-

75004376

01

Kendro Laboratory Products

Plant Osterode

LEGEND RT 120V 60HZ QUICKCONTROL

from Serial-No.

00100 70056704 Base
00101 20460089 SCREW M5X5
00102 20057535 Motorchassis
00103 20510292 SCREW
00104 20022874 ANTIVIBRATION MOUNT
00105 10104080 WASHER (SAND)
00106 20420167 NUT
00107 20057828 Noise reducer
00108 20057826 Weight
00109 20510356 Bolt
00110 20057827 Noise reducer
00111 70060304 Metallsheet
00112 20057941 Insulation
00120 20300084 FOOT
00121 20510247 Screw M8x12
00125 70057541 Chassis cover
00126 20480244 LOCK WASHER
00127 20460092 ALLEN SCREW M4 X 6
00130 70057534 Motorchassis
00135 20210390 MOTOR 125/45 3PH
00136 20056798 Insulation
00137 20150180 ROTOR RECOGNITION
00138 20510350 Bolt
00140 20150214 Speed and imbalance recognition
00141 20460097 Z-SCREW M3 X 8
00142 20480242 SECURING WASHER
00150 20180608 RECEPTACLE
00151 20440023 SCREW M3 X 8
00152 20460090 SCREW M4X12
00153 20420076 HEXAGONAL NUT M4
00160 20180138 CONNECTOR
00161 20480108 FAN WASHER A 4,3
00170 20170329 Ferroxcube ring
00171 20170330 FERROXCUBE
00200 20240607 Compressor SC 12 GX 115V/60Hz
00220 20056700 CONDENSOR
00221 20057488 Insulation
00222 20057487 Insulation

40031227

Partno.

to Serial-No.

Text

Donnerstag, 22. November 2001

Seite 1

Spare-Part-List

Index

-

75004376

01

Kendro Laboratory Products

Plant Osterode

LEGEND RT 120V 60HZ QUICKCONTROL

from Serial-No.

00223 20056735 COVER
00224 20510354 Screw
00230 70056716 Bracket Fan­00231 20510292 SCREW
00235 20210397 MOTOR FAN 115 V
00236 20480224 WASHER A 4,3
00237 20430207 SCREW M 4 X 10
00240 70056705 Evaporatorchassis
00250 70904335 Evaporator complete
00251 20430212 SCREW M 5 X 16
00255 20160733 RESISTOR 120 OHM
00256 20160734 RESISTOR 120 OHM
00257 20510352 Screw
00260 70904550 Resistor 100 Ohm F. Multi 3 R 120V
00265 20160737 CAPACITOR 4UF/400V
00270 20240577 FILTERDRYER
00271 20220598 Clip
00272 20440221 SCREW M 6 X 16
00300 20240592 HIGH PRESSURE CONTROLL SWIT
00305 20240608 Injection valve
00310 20056748 SEAL
00315 20290556 Insulation
00320 20290673 Insulation Armaflex
00325 20056761 MOTORCOVER
00326 20460103 SCREW M 3 X 12
00330 20055509 SUPPORT
00335 20140602 Sensor Temp. PT 100
00336 20250074 WASHER
00337 20470253 SCREW, PLASTIC
00340 70057552 Metall sheet
00400 20210391 MOTOR W GEAR
00405 20056715 Holder
00406 20460163 Screw
00410 20150186 PCB SENSOR
00415 70904339 COUPLING
00416 20510288 Set screw
00417 20440285 SCREW
00420 70056790 Sheet, left

40031227

Partno.

to Serial-No.

Text

Donnerstag, 22. November 2001

Seite 2

Spare-Part-List

Index

-

75004376

01

Kendro Laboratory Products

Plant Osterode

LEGEND RT 120V 60HZ QUICKCONTROL

from Serial-No.

00425 70056789 Sheet, right
00430 20056737 Slideplate
00431 20460092 ALLEN SCREW M4 X 6
00432 20220586 INSULATION
00440 20056738 Roller
00441 20056739 Bolt 4
00442 20420107 NUT M 6 LEFT
00450 20056792 HOLDER LATCH PROTECTION
00451 20350242 Spring
00452 20056791 LATCH PROTECTION
00453 20460202 Screw Ejot
00454 20057932 Insulation
00460 20180677 SWITCH
00461 20460157 Bolt M 2,3
00465 70056718 Bracket, Latch­00470 20180654 SWITCH
00471 20057257 Holder sheet
00475 70904336 LATCH ASSY
00476 20350241 Clip
00480 20056707 Bar
00481 20420070 NUT M 6
00500 70056726 Housing
00505 20057830 Grill
00510 20056650 HOLDER
00511 20510285 SCREW M5 X 12
00515 20310439 GAS LID STAY
00516 20490287 PIN
00520 20056766 SEAL
00521 20510294 SCREW M3 X 10
00525 20310442 Puller
00530 20057553 Holder, Tool­00535 20056736 HINGE
00540 20056795 Panel, right
00600 70056741 Insert
00605 20057217 HOOK
00606 20480236 SECURING WASHER
00607 20420121 NUT M 10 X 1,25
00620 70904183 Cover, door

40031227

Partno.

to Serial-No.

Text

Donnerstag, 22. November 2001

Seite 3

Spare-Part-List

Index

-

75004376

01

Kendro Laboratory Products

Plant Osterode

LEGEND RT 120V 60HZ QUICKCONTROL

from Serial-No.

00621 20420201 Nut
00630 20056731 Insulation, door
00631 20056762 Spacer
00635 20057563 Spacer
00640 20056734 Insulation small
00645 20056728 INSERT
00650 20057833 Seal
00660 20510360 Screw M5
00670 20056732 Window
00671 20056625 WINDOW, LOWER PART
00680 20510021 SCREW M 5 X 12
00681 20480200 WASHER
00682 20480167 FAN WASHER A 5,1
00685 20310504 Cover
00700 20150184 MAINBOARD 120V
00701 70904557 NV RAM
00702 70000528 PROCESSOR MAIN Legend 0528V07
00703 20230172 FUSE 15 A
00710 70060305 Cover
00711 20500200 Spacer
00712 20480300 Washer M4
00713 20420200 Nut M4
00714 20470263 Screw
00715 20440284 SCREW M 4 X 8
00720 20510293 Screw
00721 20480130 WASHER 4,3
00725 20180671 SWITCH W OVERLOADPROT. 16 A
00730 20190300 Cordset NEMA 5-15P 15A/125V 3x14
00735 20360073 SCREW DRIVER
00740 20904430 COLLET CHUCK
00770 20310508 String w washer
00800 70060312 Frontpanel
00810 20150191 DISPLAY PCB
00811 20480124 WASHER
00820 20057551 Frontplate
00825 20057909 Overlay Legend RT (knob version)
00826 20310443 Knob f. Quickcontrolpanal Multifuge
00830 20056759 FRONTPANEL SIDE

40031227

Partno.

to Serial-No.

Text

Donnerstag, 22. November 2001

Seite 4

Spare-Part-List

Index

-

75004376

01

Kendro Laboratory Products

Plant Osterode

LEGEND RT 120V 60HZ QUICKCONTROL

from Serial-No.

00831 20460164 Screw
00840 20290664 seal
00845 20057560 Spacer
00846 20460161 SCREW
00900 20057916 Operating instruction
00901 20057821 Short Instruction for Multifuge 3S engl.
00910 20057914 Instruction
00911 20057915

40031227

Partno.

to Serial-No.

Text

Donnerstag, 22. November 2001

Seite 5

Spare-Part-List

Index

to Serial-No.

-

75004377

01

Kendro Laboratory Products

Plant Osterode

LEGEND RT 120V 60HZ EASYCONTROL

from Serial-No.

00100 70056704 Base
00101 20460089 SCREW M5X5
00102 20057535 Motorchassis
00103 20510292 SCREW
00104 20022874 ANTIVIBRATION MOUNT
00105 10104080 WASHER (SAND)
00106 20420167 NUT
00107 20057828 Noise reducer
00108 20057826 Weight
00109 20510356 Bolt
00110 20057827 Noise reducer
00111 70060304 Metallsheet
00112 20057941 Insulation
00120 20300084 FOOT
00121 20510247 Screw M8x12
00125 70057541 Chassis cover
00126 20480244 LOCK WASHER
00127 20460092 ALLEN SCREW M4 X 6
00130 70057534 Motorchassis
00135 20210390 MOTOR 125/45 3PH
00136 20056798 Insulation
00137 20150180 ROTOR RECOGNITION
00138 20510350 Bolt
00140 20150214 Speed and imbalance recognition
00141 20460097 Z-SCREW M3 X 8
00142 20480242 SECURING WASHER
00150 20180608 RECEPTACLE
00151 20440023 SCREW M3 X 8
00152 20460090 SCREW M4X12
00153 20420076 HEXAGONAL NUT M4
00160 20180138 CONNECTOR
00161 20480108 FAN WASHER A 4,3
00170 20170329 Ferroxcube ring
00171 20170330 FERROXCUBE
00200 20240607 Compressor SC 12 GX 115V/60Hz
00220 20056700 CONDENSOR
00221 20057488 Insulation
00222 20057487 Insulation

40031227

Partno.

Text

Donnerstag, 22. November 2001

Seite 1

Spare-Part-List

Index

to Serial-No.

-

75004377

01

Kendro Laboratory Products

Plant Osterode

LEGEND RT 120V 60HZ EASYCONTROL

from Serial-No.

00223 20056735 COVER
00224 20510354 Screw
00230 70056716 Bracket Fan­00231 20510292 SCREW
00235 20210397 MOTOR FAN 115 V
00236 20480224 WASHER A 4,3
00237 20430207 SCREW M 4 X 10
00240 70056705 Evaporatorchassis
00250 70904335 Evaporator complete
00251 20430212 SCREW M 5 X 16
00255 20160733 RESISTOR 120 OHM
00256 20160734 RESISTOR 120 OHM
00257 20510352 Screw
00260 70904550 Resistor 100 Ohm F. Multi 3 R 120V
00265 20160737 CAPACITOR 4UF/400V
00270 20240577 FILTERDRYER
00271 20220598 Clip
00272 20440221 SCREW M 6 X 16
00300 20240592 HIGH PRESSURE CONTROLL SWITC
00305 20240608 Injection valve
00310 20056748 SEAL
00315 20290556 Insulation
00320 20290673 Insulation Armaflex
00325 20056761 MOTORCOVER
00330 20055509 SUPPORT
00335 20140602 Sensor Temp. PT 100
00336 20250074 WASHER
00337 20470253 SCREW, PLASTIC
00340 70057552 Metall sheet
00400 20210391 MOTOR W GEAR
00405 20056715 Holder
00406 20460163 Screw
00410 20150186 PCB SENSOR
00415 70904339 COUPLING
00416 20510288 Set screw
00417 20440285 SCREW
00420 70056790 Sheet, left
00425 70056789 Sheet, right

40031227

Partno.

Text

Donnerstag, 22. November 2001

Seite 2

Spare-Part-List

Index

to Serial-No.

-

75004377

01

Kendro Laboratory Products

Plant Osterode

LEGEND RT 120V 60HZ EASYCONTROL

from Serial-No.

00430 20056737 Slideplate
00431 20460092 ALLEN SCREW M4 X 6
00432 20220586 INSULATION
00440 20056738 Roller
00441 20056739 Bolt 4
00442 20420107 NUT M 6 LEFT
00450 20056792 HOLDER LATCH PROTECTION
00451 20350242 Spring
00452 20056791 LATCH PROTECTION
00453 20460202 Screw Ejot
00454 20057932 Insulation
00460 20180677 SWITCH
00461 20460157 Bolt M 2,3
00465 70056718 Bracket, Latch­00470 20180654 SWITCH
00471 20057257 Holder sheet
00475 70904336 LATCH ASSY
00476 20350241 Clip
00480 20056707 Bar
00481 20420070 NUT M 6
00500 70056726 Housing
00505 20057830 Grill
00510 20056650 HOLDER
00511 20510285 SCREW M5 X 12
00515 20310439 GAS LID STAY
00516 20490287 PIN
00520 20056766 SEAL
00521 20510294 SCREW M3 X 10
00525 20310442 Puller
00530 20057553 Holder, Tool­00535 20056736 HINGE
00540 20056795 Panel, right
00600 70056741 Insert
00605 20057217 HOOK
00606 20480236 SECURING WASHER
00607 20420121 NUT M 10 X 1,25
00620 70904183 Cover, door
00621 20420201 Nut

40031227

Partno.

Text

Donnerstag, 22. November 2001

Seite 3

Spare-Part-List

Index

to Serial-No.

-

75004377

01

Kendro Laboratory Products

Plant Osterode

LEGEND RT 120V 60HZ EASYCONTROL

from Serial-No.

00630 20056731 Insulation, door
00631 20056762 Spacer
00635 20057563 Spacer
00640 20056734 Insulation small
00645 20056728 INSERT
00650 20057833 Seal
00660 20510360 Screw M5
00670 20056732 Window
00671 20056625 WINDOW, LOWER PART
00680 20510021 SCREW M 5 X 12
00681 20480200 WASHER
00682 20480167 FAN WASHER A 5,1
00685 20310504 Cover
00700 20150184 MAINBOARD 120V
00701 70904552 NV-RAM PRV MULTI 3S-R / 120V 045
00702 70000528 PROCESSOR MAIN Legend 0528V07
00703 20230172 FUSE 15 A
00710 70060305 Cover
00711 20500200 Spacer
00712 20480300 Washer M4
00713 20420200 Nut M4
00714 20470263 Screw
00715 20440284 SCREW M 4 X 8
00720 20510293 Screw
00721 20480130 WASHER 4,3
00725 20180671 SWITCH W OVERLOADPROT. 16 A
00730 20190300 Cordset NEMA 5-15P 15A/125V 3x14A
00735 20360073 SCREW DRIVER
00740 20904430 COLLET CHUCK
00770 20310508 String w washer
00800 70060312 Frontpanel
00810 20150190 DISPLAY PCB
00811 20480124 WASHER
00820 20057550 FRONT
00825 20057908 Overlay Legend RT
00830 20056759 FRONTPANEL SIDE
00831 20460164 Screw
00840 20290664 seal

40031227

Partno.

Text

Donnerstag, 22. November 2001

Seite 4

Spare-Part-List

Index

to Serial-No.

-

75004377

01

Kendro Laboratory Products

Plant Osterode

LEGEND RT 120V 60HZ EASYCONTROL

from Serial-No.

00845 20057560 Spacer
00846 20460161 SCREW
00900 20057916 Operating instruction
00901 20057821 Short Instruction for Multifuge 3S engl.
00910 20057914 Instruction
00911 20057915

40031227

Partno.

Text

Donnerstag, 22. November 2001

Seite 5

Calibration Certification

Zertifikat für Kalibrierung

Multifuge /

Lengend

Page/Seite 1

Preventive Maintenance Checklist Complete

Vorbeugende Wartungsliste, vollstdg

Account Name: Account Address:
Instrument Model: Serial Number:
Report Number: Date:

Performance Certification / Durchführung

SPEED / DREHZAHL

Standard Test Rotor Used:

Set Speed (rpm) Tolerance

(whichever is greater)

4150/4600 +/-1% or 50 rpm

15000 +/-1% or 50 rpm

Custom Test Rotor Used:
+/-1% or 50 rpm
+/-1% or 50 rpm

Standard Test Rotor Used:

Calibration

Temp.

(°C)

+4 +/- 2

+15 +/- 3

Tolerance

(°C)

Custom Test Rotor Used:

+/- 2
+/- 2
+/- 2

Displayed

Speed

(rpm)

TEMPERATURE / TEMPERATUR

Displayed

Temp.

(°C)

Repair and Calibration Recertification

Reparatur und Wiederholungskalibrierung

Measured

Speed
(rpm)

Measured

Temp.

(°C)

Meets Spec.

(y/n)

Meets

Spec.

(y/n)

Remarks Passed

(Initials)

Remarks Passed

(Initials)

TIME / ZEIT

Standard Test Rotor Used:

Timer Set

(min.)

10 +/- 30

Type Model Serial Number Date of Next Calibration

Stopwatch

Temperature Meter

Photo Tachometer

Safety Tester

Insulations resistance

>10 Megaohm

Custom Test Rotor Used:

Earth Conductor Resistance

Tolerance

(sec.)

+/- 30
+/- 30
+/- 30

TEST EQUIPMENT / PRÜFMITTEL

SAFETY TEST / SICHERHEITSTEST

<0.2 Ohm

Measured

Time
(m/s)

Accessible Current

<3500µA

Meets
Spec.

(y/n)

Remarks Passed

(Initials)

Revised 29/09/00

Certified By:_____________________________ Reviewed By:________________________________ Expiration Date ______
Signature Date Customer Signature Date

Page 1 of 1 Use ONLY Black permanent ink when filling out. Leave NO blank spaces. June, 1999

H:\SERVICE\SM\USA\Multifugegek\maintenance.doc

Kendro service Information

Heraeus Centrifuges

PREVENTIVE MAINTENANCE CHECKLIST

Rotor Inspection

o Check for corrosion and wear
o Inspect rotor lid locking screw
o Inspect rotor magnets (rotor I.D.)

Serial numbers:

75006445...............

75006435...............

75006444...............

75003332...............

75003046...............

75003334...............

Preliminary Checks

o Clean inst. & condenser coils
o Rotor chamber (defrost)
o Inst. environment
(level & clearance)

o instrument top speed _________rpm
o Deceleration time _________seconds
o Time (10 minute set) _________actual min:sec
o Temperature (4° set) _________actual (°C)

Imbalance

o Centrifuge stable and level
o Centrifuge shuts off w/proper weight

Safety test

o Accessible leakage current <3500µA
o Insulation resistance >10 Megaohm
o Earth Conductor Resistance <0.2 Ohm

Multifuge/Legend
Type
S/N

Pre-run Checks

o Ground continuity
o Line voltage ________V AC
o Display segments on power-up
o Door interlock and latch
o Drive stop & Door unlatch (50 rpm)
o Fan operation (condenser & drive)

Mechanical

o Motor bearings

o Microprocessor Initialization (if required)

o Refrigerant leaks (if required)
o Compressor current draw

Performance Checks

o Acceleration time _________seconds

Revised – 21/08/00 1 of 2

Comments:

Kendro service Information

S.R. Signature ____________________
Date of Service ____________________

Revised – 21/08/00 2 of 2