AccuSpin Micro R 120 V

accuSpin Micro R SERVICE MANUAL 12005542

Edition:01 0 - 0 accuSpin Micro R20/02/03 He

TABLE OF CONTENS

Section Title Page1 OPERATING INSTRUCTIONS (not part of this manual)

BROSHURE

2 SERVICE2.1 Servicing Schedule 2 – 1/22.2 Trouble Shooting 2 – 3/4/52.3 Test Points 2 – 62.4 Mounting and adjustment of the torsion spring 2 – 7/82.5 Assembly and adjustment of the drive 2 – 82.6 Cleaning of Instrument Parts 2 – 82.7 Electrical Safety Check 2 – 9

3 FUNCTIONAL DESCRIPTION3.1 Block Functions 3 – 13.2 Functions of Main Board 3 – 1/2/33.3 Key and Indication Board (Part of Main Board) 3 – 4

4 DIAGRAMS4.1 Block Diagram 4 – 14.2 Wiring Diagrams 4 – 2/34.3 Wiring Connection Diagrams 4 – 4/5/64.4 Main Board (120V) - Component Plan 4 – 74.5 Main Board - Wiring Diagram 4 – 8...13

5 DISASSEMBLY OF INSTRUMENT PARTS5.1 Housing / Casing Parts 5 – 15.2 Sealing Elements 5 – 25.3 Mechanical Components 5 – 35.4 Electrical Components 5 – 4/55.5 Drive Components 5 – 65.6 Components of Cooling Plant 5 – 7/8

6 SPARE PART FIGURES AND LISTS6.1 Break Down Drawings 6 – 1...66.2 Spare Part Lists

7 Preventive maintenance checklistCalibration Certificate

8 TECHNICAL BULLETINS

Service

Edition: 01 2 - 1 accuSpin Micro R17.02.03 He

2 Service2.1 Servicing Schedule (yearly procedure recommended)2.1.1 Maintenance Routine without Dismantling the Centrifuge2.1.1.1 Electrical Installation and Safety

• switch OFF the centrifuge and disconnect the unit from power, check voltage supply and mainsfusing (15 Amps, slow blow characteristic)

• check condition of plug and wall socket - (let) replace defective parts• 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 Installation• 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 Locking Mechanism and Safety Device• connect the centrifuge to power and switch ON• check for easy lid closing and self-acting lid opening - if in disorder, readjust lid's swivel hinge

and/or torsion spring• check the central rubber gasket for lid sealing and replace it, if damaged• for checking of the safety circuit: start the centrifuge let it shortly run and stop it, the lid must not be

opened as long as the message "end" will be indicated - if safety circuit is out of function, replacemain board

2.1.1.4 Cleanliness of Spin Chamber and Motor Casing• open the lid and remove the rotor (for loosening turn socket wrench in arrow direction - see rim of

rotor chamber, push 2 screw drivers in opposite holes and pull the rotor vertically out)• clean the spin chamber with a dry and absorbent cloth (remove all dust and moisture - see also

section for Cleaning)• check the correct seat and condition of the motor cover and take care of the cleanliness of the

annular slot around the motor shaft: penetrating fluids can damage the upper motor bearing,remove fluids with an injector and/or absorbent paper

2.1.1.5 Rotor and Accessories Condition and Sealing• check the condition of rotor 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 ofmechanical damage or rust

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

2.1.1.6 Rotor and Accessories Condition and Sealing• check the condition of rotor 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 ofmechanical damage or rust

• check the condition of rotor and/or accessory sealing and replace them in case of malfunction2.1.1.6 Rotor Fixing and Motor Shaft

• check the trouble-free condition of the locking nut and replace it in case of malfunction• check the condition of the drive motor shaft: the centrifuge must not be used any longer, if the

drive shaft is damaged (bend, thread is worn out, etc.)2.1.1.7 Temperature Control Circuit

• clean the condenser with a dust exhauster• check the thermal isolated fixing and the correct place of the temperature sensor• reinstall the rotor and run the centrifuge at maximum rotor speed and at 4°C, check the

temperature 15 minutes later: the displayed and measured value should be approximately thesame (allowed tolerances ±2°)

Service


2.1.2 Maintenance Routine after Dismantling the Centrifuge Casing2.1.2.1 Motor Supporting Elements

• check the supporting and damping motor elements and replace them in case of increased rubberabrasion or abundance of imbalance. We recommend yearly change - but at least every 3 years.A service kit 70904580 is available.

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 malfunction2.1.2.3 Ventilation and proper Air Flow

• check the sucking performance of the fans (a piece of paper must be sucked on), if necessaryclean or replace defective fan

• check the air path and lateral sealing: no air must be redrawn from inside, if necessary replace thelateral insulation

2.1.2.4 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 screwing connections of all boards, mechanical and electrical components and re-

tighten them if necessary (use screw locking lacquer for motor mounts and lid lock assembly)2.1.2.5 Protection Earth Core and Grounding Connections

• check the protection earth core for continuity and all grounding plug connectors• check isolation resistance and accessible current

Service


2.2 Trouble ShootingError

Indication Error Cause Possible ErrorSource Corrective Procedure

mains fuse or circuitbreaker failed

check fuse or circuit breaker and replace or switch onagain

defective mains cord,socket or mains

switch

check leads, socket and mains switch, replacedefective parts

no mainsvoltage supply

unit fuse or fuses onmain board defective

Replace the fuse, if fuse blows up again, search forother faults

faulty connectionfrom main board to

key board

check connections on main and key board, checkconnecting leads, replace faulty partsno low voltage

supply forindication board faulty indication or

main board replace main board completely

displaysremain

dark

interruptedprogram

NV-RAM out ofsocket or not

correctly placed

insert the valid NV-RAM and push it correctly intosocket

reduced voltagesupply (<95V)

remedy the failureif the voltage drops often, use a voltage stabiliser

all displayelements

are shortlyilluminated

CPU programreset may be

caused by EMI bad or missingground connection

check all ground connections and the groundconnection of the main boards

constant Programinterruption parameter NV-RAM no or defective NV-RAM

rotor notsymmetrically loaded open lid, check load, close lid again and start

base is not sturdyenough and comes

into vibrations

change or reinforce the base (floor, table lorry withlockable wheels)

centrifuge is notcorrectly leveled

level the centrifuge correctly, use a spirit level on topof centrifuge

rotor has imbalance(mechanical causes)

rotor must not be used any longer, send back tofactory

centrifugeshakesbadly

imbalance run

drive shaft is bent,rotor fixing is

damagedreplace the drive motor

missing mainsvoltage remedy see above, opening device only at standstill

PTC resistor hasreleased after a waiting time of 1-2 minutes press key again

lid coil is not ornot sufficientlysupplied with

voltage faulty driving or triaccircuit replace complete main board

faulty lid coil faulty winding of coil replace complete lid locklid bolt is jamming push lid centrically into lock and press the key again

lid cannotbe opened

by keypressure atstandstill

lid is notcorrectly locked lid is deformed or

disadjusted re-adjust the lid centrically

Service


Trouble ShootingError


Lid was openedmanually during

run

Forbidden!Lid opening device

must only be used atstandstill

close lid immediately, turn power OFF/ON, wait fortermination of br phase until end message appears

check leads and connectors to micro switch, in caseof a faulty micro switch, replace lid lock device

completely

Defective microswitch or leads or

connectors to microswitch areinterrupted

let motor cool down, then check temperature switchand leads with Ohmmeter

check air cooling, circulation

„LId“message

appears inspeeddisplay

protection circuit(15V) for lid and

motortemperaturecontrol wasinterruptedduring run

Motor over-temperature switch

has tripped (nosufficient air flow ormotor has run on 2

phases only)

check solderless connections XM1-3 and motorwindings, replace defective parts

micro switch check leads and micro switch„OPEn“message in

display

15V supplycircuit is

interrupted atstandstill

motor over-temperature switch

check motor over-temp. switch and leads forcontinuity, replace faulty parts

short interruption ofmains supply Wait for rotor standstill (approx. 75 sec) and re-start“br“

messageappears in

speeddisplay

rotor comes tostandstill

without brakingforce

bad contact ofinstrument supply

line

Check plug contacts of supply line and replacedefective parts if necessary

rotor is jammed check for easy movement, remove any jammingobjectsrotor didn't turn

motor is jammed remove drive, replace faulty partsconnection: drive

main boardcheck terminal and lead connections, replace faulty

parts

defective drive check resistance of motor windings, replace faultyparts

E-00flashes

motor didn't start

faulty main board replace main boardfaulty temperaturesensor (PT100) or

leads

check plug connection and resistance of PT 100,replace faulty sensor

E-04flashes

faultytemperaturemeasuringtest: PT100

substitution byresistors,

indication afterpower ON

defective amplifier orconverter

set the temperature to 20°C and watch the display:100Ω → (0±2)°C120Ω → (50±2)°C

if not replace the main board

compressor didn'twork

check leads and voltage supply on main board andcompressor, replace defective parts

chamber overtemperature

indication value>50°C loss of refrigerant search for leakage, evacuate and refill with new

refrigerantE-04flashes

chamber undertemperature

indication <-10°C

compressor didn'tcut off

check compressor relay and relay driving, replacedefective parts

voltage pikes onmains supply

if happened repeatedly, connect a surge inter mainsand unit

faulty brake path check leads and brake resistor, replace defectiveparts

E-08flashes

Excess voltageof DC

intermediatecircuit

faulty component replace main board

Service


Trouble ShootingError


E-10flashes

checksum errorof NV-RAM

NV-RAM wrong or notinitialised insert the correct NV-RAM

sporadic: strongelectromagnetic

disturbance

if error returned very often screen the disturbancesource or operate the centrifuge on another placeE-11

flashes

error during dataexchange from

NV-RAM continuously: erroron main board replace defective main board

sporadic: strongelectromagnetic

disturbance

if error returned very often screen the disturbancesource or operate the centrifuge on another placeE-23

flashes

too muchtolerances during

temperaturecalibration continuously: error

on main board replace defective main board

Service


2.3 Test PointsTest Points Unit Value Conditions

mains terminalXN 120V AC all given values are related on 120V (±10%) mains voltage for board’s

supply – Rotor 3243terminal XM

motor voltage -values must be

the samebetween all 3motor leads

(U,V,W)

115V AC155V AC210V AC

in each case measured inter 2 motor leads after reaching selected speed -no effective values!3000min-1

6000min-1

13000min-1 acc. time: 15s, dec. time: 17s

motor current IMcable (U,V,W) 3 * 0,6A

soft iron or digital effective measuring meter(true RMS)Max. during accelerationspeed = 13000min-1

320V DC350V DC

at standstillmax. during braking phase Bremsens

305V DC speed = 13000min-1

intermediatevoltage UD

inter U+ (cathodeD4) and U- (anode

D5) 275V DC shortly at maximum acceleration

25mV DC40mV DC65mV DC

3000min-1

6000min-1

13000min-1

current ID ofintermediate

circuit, (measuredas voltage dropacross controlresistor R100)UM = ID * RM

180mV DC

-45mV DCshortly at maximum accelerationshortly at maximum braking

motor windingresistance 20°C 3 x 14Ω

-insulation value > 10MΩ

switch OFF unit, pull off motor plugs, measure inter 1 -> 2, 2 -> 3, 3 -> 1resistance inter each phase and motor casing

brake resistorR24 parallel R101 235Ω resistor temperature: 20°C

compressorterminal XGterminal box

pull off startingrelay

-insulation

3,6Ω5,5Ω10,4Ω0,3Ω

> 10MΩ

compressor temperature 20°Cresistancemain coil (between terminal 13 + 14)auxiliary coil (between terminal 12 + 13)coil starting relayinter phase and compressor casing

fan motorterminal XK 150Ω

resistancedisconnect one pole of terminal XK

fan temperature20°C

lid solenoidterminal XC 20Ω resistance , not activated

lid switchesplug XA 15V DC voltage drop by open lid

Over temperatureswitch Motorterminal XB

15V DC voltage drop by closed lid and disconnect one pole of terminal XB

Temp. Sensorplug XU 95mV voltage drop

chamber temperature 20°C (PT100: ≈ 108Ω)

Service


2.4 Mounting and adjustment of the torsion spring

2.4.1 PurposeThe torsion spring offers the user a comfortable support when closing and opening the centrifuge lid.When the "open lid" key is pressed, the lid lock is released on both sides and the lid bursts open andremains in a 20° position. Up to an angle of 45° the lid remains stable in any chosen position, beyond45° it automatically opens to full extent.

2.4.2 MountingThe torsion spring assembly contains the following parts:• torsion spring• 2 plain bearing bushes (for shaft guidance)• 2 bushing nipples (for leg catch)• 2 set screws (aid for fixing legs)• dowel pin (for hooking the torsion spring onto the shaft)• tube of Loctite 221 (for fastening screws)• tube of Molykote TP42 (for lubrication of the torsion spring)

Preparation:The defective torsion spring has been removed as described in Section 5, the old plain bearingbushes and bushing nipples have been removed.1. Press the new plain bearing bush from outside into the right-hand bore of the chassis.2. Slip on both bushing nipples up to the head of the hexagon bolt M6x12. Fix the screws again to

the chassis and secure with Loctite 221.3. Push the old dowel pin carefully from the shaft using a pin punch, then push the new dowel pin on

using a plane surface (e.g. a wooden panel).

Mounting the shaft and torsion spring:4. Grease the short end of the shaft evenly using about 5 g of Molykote TP42.

Attention! Do not cover the plain bearing with grease!5. Slip the torsion spring onto the short end of the shaft (short loop first).6. Push the long end of the shaft through the left-hand bore of the chassis and slip into right-hand

plain bearing bush.7. Press the plain bearing bush via the shaft into the left-hand bore of the chassis.

2.4.3 AdjustmentPreassembly and alignment of the legs:8. Push both legs onto the ends of the shaft such that the bores are horizontally oriented and the leg

ends point forward.9. Screw the M8 nuts loosely onto each of the shaft ends to position the legs.

10. Screw one dowel pin each tightly into the rear threaded bores, thereby fixing them with the bore inthe chassis.

Stretching the torsion spring:11. Push a suitable screwdriver from behind into the left-hand bore of the shaft and turn totally to the

front. Grip the shaft via the middle bore with another screwdriver and turn it to approximately 15°from horizontal.

12. Tighten fast both nuts of the shaft.

2.4.4 Assembling lid and housing13. Put lid in place. It must catch audibly into both locks.14. Screw on front cap screws on both sides, thereby fastening the lid tightly to the two legs.15. Replace one by one the two set screws in the rear bores by the remaining two cap screws.16. Manually release the locks. The lid should come to rest at an angle of 15-30°. If this is not the

case, re-stretch using the middle bore of the shaft. Should this be impossible, the lid must bedisassembled and the spring must be stretched anew!

17. If the angle is okay, secure the M8 nuts with one drop of Loctite each on the legs.18. Close the lid and replace the rear cap screws on both sides by set screws. Attention! Set screws

must not jut out of the legs!

Service


19. Screw lid off and mount housing.20. Reassemble lid as described above and check opening angle of 15-30°.

2.5 Assembly and Adjustment of the Drive2.5.1 Purpose of the adjustmentThe temperature measurement of the Biofuge fresco is done using a slim temperature probe. The tipof this temperature probe is fixed at a very short distance to the motor cover as well as to the rotor. Inorder to guarantee an accurate temperature measurement, a defined distance to both rotor and motorcover is mandatory! For this purpose, the drive must be adjusted.

2.5.2 Mounting / Adjustment of the drive with help of the rotor #3243Fasten rubber buffers to the transverse crosshead using nuts and washers.• Place transverse crosshead inside the chassis and fasten with screws such that the screws are

aligned with the upper ends of the long holes.• Connect the motor to the rubber buffers using the screws and locking rings.

Adjusting the transverse crosshead• Put three cylindrical spacers with a thickness of 6,0±0,1 mm (diameter 10 to 20mm) for rotor

#3243 into the evaporator.• Position the rotor onto the motor shaft and fasten with flanged nut.• Loosen the screws about ½ turn and carefully move transverse crosshead downward until the

rotor rests on top of the spacers. Attention! Make sure the transverse crosshead is horizontallyplaced. Besides, the rubber buffers must not be stretched or tilted.

• Fasten all 8 screws of the transverse crosshead.

Checking the adjustment• Replace the spacers by three 5,0±0,1 mm thick spacers (diameter 10 to 20mm) for rotor #3243.

Fasten rotor again as prescribed.• Turn rotor manually. The motor is correctly mounted if the rotor does not touch the spacers. If it

does, the adjustment must be repeated.• Remove spacers and secure screws with a drop of screw lock.• Reinstall centrifuge and rotor as prescribed and do a test run.

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 avacuum cleaner.

• FansScratch off carefully with a knife or similar tool the crusted dirt from the fans’ blades. Resultinggrooves or marks must be removed subsequently with a fine abrasive cloth. Loose dirt is toremove with an absorbent cloth or vacuum cleaner.

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

• Condensers of cooling plantThe louvers between the condensers’ heat air deflectors have to be vacuum cleaned. In case ofpersistent dirt the unit must be carried to an appropriate place where the condensers can becleaned with compressed air from inside to outside. Bent heat air deflectors have to be realignedcorrectly.

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 conductorThe measuring value of the resistance between the mains plug's grounding pin and thegrounding conductors of the motor, electronic chassis and the casing must not exceed 200 mΩ.

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

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

500Ω±1%

L (N)N (L)PE

10kΩ±5%

0,022µF±5%

VAC

0,22µF±5%

Steckergehäuse / plug-in casing

Spezifaktionen für Meßgerät- TRMS, DC - 5kHz oder mehr- Eingangswiderstand > 1M- Toleranz 5% oder besser- Crest Faktor 5 oder besser

Ω

Specifaction for the meter- TRMS, DC - 5kHz or more- Input resistance > 1M- Tolerance 5% or better- Crest Factor 5 or better

Ω

Körperstrom:accessible current: I [mA] = U [mV] / 500:

U = 1750mV I = 3,5mAmax max≡

Functional Description


3 Functional Description

3.1 Block Functions

The accuSpinMicro R is a microprocessor controlled laboratory tabletop centrifuge with inductiondrive motor and refrigerator. Following boards and components are located inside of the unit (seeblock diagram section 4 page 4-1):• Two poles mains switch is mounted in the bottom of the front panel's right side• Main board with microprocessor part and power electronics, 2 fuses (4AT) are serving for board

protection• Key and indication board (EASYCONTROL programming with temperature display)• Three phase induction drive motor with an integrated thermal over temperature switch (cut-out at

140°C)• Temperature sensor PT100• Compressor with starting relay (inside terminal box) and starting capacitor• Two lid lock assemblies with solenoid and integrated micro switches (mechanical bolt keeper,

magnetically dislocking)• Brake resistor mounted on main board• Two fans (parallel connected) for cooling of condenser, drive, compressor and electronics

3.2 Main Board Functions

The main board is mounted on the rear side of the front panel. The components on main board arearranged in following groups (see also wiring diagram page 4-2 and 4-3).• Board fusing (2 x 4 Amps. slow blow feature)• Noise Filter for suppression of radio interference, caused by the fast switching power electronics

(9,9 kHz), in accordance with the EN 55011• Power pack for low voltage supply of microprocessor part (potential separated by transformer) and

power electronics (mains potential)• Triac control circuit for both parallel connected fans• Triac control circuit for both parallel connected lid solenoids ( DC supply via bridge rectifier)• Triac control circuit for compressor relay• Bridge rectifier for DC intermediate circuit supplying brake control path and frequency converter• Microprocessor part with Controller (central processing unit) and ASIC80 (specific integrated circuit

for controlling of centrifuge functions)



3.2.1 Power Pack

The power pack consists of a transformer, bridge rectifier and voltage regulator.• U1 = 5 V supplies central processor, key and indication board and temperature measuring

circuitreference potential A1: connected to protective conductor (GND)

Additional generated by one way rectifying from the mains voltage:• U2 = 15 V supplies control electronics of frequency converter via the protection circuit of FET

over temperature switch (118°C - normal closed), closed lid switch and motor overtemperature switch (normal closed)reference potential:A2! mains potential! EXERCISE CAUTION when measuring etc.

3.2.2 Intermediate Circuit with Brake Path and Frequency ConverterIntermediate CircuitThe DC intermediate circuit serves as an energy store between the AC power input and thetransmitted motor performance. The intermediate circuit consists of a bridge rectifier (4 diodes) andone reservoir capacitor which is softly charged, continuously supplied during operation and slowlydischarged after power off.

Brake PathElectrical power is fed back into the intermediate circuit during motor deceleration (motor acts asgenerator). This braking power is transformed into heat by two big brake resistors (parallel connected)on board so that the intermediate circuit voltage does not rise to an excessive level (see section 2 -test points on main board). The brake resistors are switched into the intermediate circuit by a fastswitching transistor (pulse width modulation). This transistor is voltage dependant controlled by a self-acting stage (closed loop).

Frequency ConverterThe motor is 3-phased provided with chopped direct voltage blocks. These blocks are variable infrequency and pulse width modulation and are dephased to 120° between the motor windings.Beginning with low frequency and small pulse width chopped blocks, both parameters will beincreased up to the operators set speed. By this variation the acceleration power of the drive motorcan be effected. For deceleration the frequency and pulse width parameters will be reduced. Thefrequency converter is protected against over current, over temperature and over voltage.



3.2.3 Microcontroller (Central Processing Unit)The controller block includes the central processor unit (CPU) 80C21 PLCC and the data storage (NV-RAM)9346 with the software identification No's. for:

• CPU: 097 8 xx (first displayed No. in speed, time and temperature field)

• RAM: 415 8 xx (second displayed No. in speed, time and temperature field)

The second parts of these No.'s (xx displayed in the temperature field) will be upgraded if necessary.The ROM with control program is integrated in the CPU. The most important operating parameters(e.g. the maximum data or the last operator settings) are stored in the non volatile (NV) -RAM.

The CPU co-operates with the ASIC 80 component via the 8 bit data bus and some control lines. TheASIC 80 is a specially designed integrated circuit for the driving of our centrifuges (with inductionmotors), containing additional functions for temperature measuring and electronics protection.



3.3 Key and Indication BoardThe key and indication board is mounted behind the display. The connection to the main board isdone by a 14 pole flat cable. The 7-segment displays, the control key LED and the operating keys arealso managed by the CPU. For the programming serves EASYCONTROL (see Operating InstructionManual).

Function of key elements

keys name function(s)S1 lid symbol to open the lid (only possible at standstill)S2 double arrow quick run, to start - keep the key pressedS3 square symbol stop, to terminate the centrifugal run manuallyS4 arrow to right start, to set a centrifugal run in rotationS5 speed arrow down to decrease the value of the set speedS6 speed arrow up to increase the value of the set speedS7 temp. arrow down to decrease the value of the set temperatureS8 temp arrow up to increase the value of the set temperatureS9 time arrow down to decrease the value of the set timeS10 time arrow up to increase the value of the set time

Function of indicating elements

indicat. name function(s)

H01,H02 temperaturerange

indication of sample temperature, right part of softwareidentification numbers of CPU and NV-RAM

H03,H04 time range indication of centrifugation time and hold (hd),left part of software identification numbers of CPU and NV-RAM

H5 – H7 speed range

indication of speed [•1000 (min-1)]• left part of software identification number• run finished (“End“)• error messages like (“LId“, “E- “)

H8, H9,H12, H13 rotation-LED’s indication of rotation after starting till “End“

x1000

accuSpin Micro RTM

4 - 1

Block Diagram

Y1 Y2

key and indication board

motor

M1

3~

brake resistor

lid solenoid

lid lock left side lid lock right side

lid solenoidlid switch lid switch

F3

overtemp. switch

XA XBXC XM XU

instrument plug

main board

M2

XGXK

XN

fan for compressor, condenser

M3 M4

V1PT100

compressortemp. sensor

mains switch

legend

screwing connection plug connection

XF

XF

S1

CPUNV-RAM

S1 S2S4S3

SCHEMATIC DIAGRAMS

accuSpin Micro RTM21.02.03

Edition: 01

4 - 2

Wiring Diagram

7805

transformer, rectifiers and regulators

F1

XA/1

lid switch

S1..S4

main board

M2

5V (VCC)

XV/1 XV/2

8AT

XA/2XB/1 XB/2 XC/1 XC/2

Y1

Y2

PTC

NTC

autom. brake control

+15V

DC intermediate circuit0V=A2

A1=GND

driving of FETs (frequency converter)

lid solenoid

CS

fan for condenser

noise filter

compressor with starting relay

XG/1

K1

"E-07"

"E-17"

"E-17"

"E-08"

"E-07"

"E-07"

"E-07" "LId"

14 10

11

Î

13

M3

M2

XL

XN

XPE

3

4

PE chassisPE motor

PE compressorPE condensor fan

1

5

2

R1 220brake resistor

"E-08"

instrument plugwith mains switch

S0

XG/2

SCHEMATIC DIAGRAMS


Edition: 01

4 - 3

Wiring Diagram

K1(M2)5

U

F

temperature sensorPT100

V1

"E-7"

1

2

XM/1 XM/2 XM/3

F3

M1

overtemperature switch

Motormotor

3

4

U1 (5V)A1 = GND

U1 (5V)A1

U2 (15V)

A2 R44

frequency converter

µP part

key and indication part

EASYCONTROL

main baord part 2

ASIC80

dyndyn

dyn

CPU NV-RAM

physical separation

INHIBIT

RESET

2x6 HGTPs

Y1, Y2

Û “E-” “ 8”

"E-” “ 0"

"E-” “ 0"

“E-” “ 0”

"E-10""E-11"

"LId"

ii

i

15V “LId”...

"LId"

"OP"

13 8 4

3

XF

H1

H6H8

H9H7

H2H3 H4 H5

XF14

3

S1S2

S4 S3 S8 S7

S6S5

A,BF,E

8

A,B,C,DE,F,G,DP

UD-*

UD+

current control res.

MUX

SCHEMATIC DIAGRAMS


Edition: 01

4 - 4

Wiring Connections Diagram

S 1

S 2

toroidial core, Valvo4322 020 97183+ cable tie perform a most narrow winding

as possible!

no. 1 no. 2 no. 3

key and indication board

XA

F1

XM3XM2XM1

XC

PE

XU

XK

XG

XN

drive motor

M 3M 2

Y 1

Y 2

instrument plug

12

45

I 0

heat sink

lid switchesS1 u. S2

lid solenoidsY1 und Y2

fans for condenserM2 und M3

M4compressor

mains switchS 0

M 1

brake resistorR 101

XB1 XB2

motor overtemp. switchXB1 u. XB2

temperature sensor

Y 1

Y 2

S1

S2

1

4

2

14

2

lid lock, right side

lid lock, left side

1

1

4

4

a

a

b

b

a

a

b

b

PE

N L

L

N

PE - motor

PE - compressor

bottom platebottom plate

PE - fan M2 PE - fan M3

mounting mains ground

amored chamber

pass through from inside all leadsmarked by ellipse

lead-in hole for sensor

1

2

1

2

1

2

mounting of unit ground, right side in front mounting of unit ground, left side in front

PE - armored chamber foot, right side in the rear

PE - main board

1x PE - terminal 1 pole1x screw M4x10mm2x fan washer 4,3mm

1x screw M4x25mm

6x fan washer 4,3mm3x nuts M4

1x PE - terminal 3 pole

2x fan washer 4,3mm

1x PE - terminal 3 pole1x screw M4x10mm

2x fan washer 4,3mm1x screw M4x16mm

1x nut M4

PE - mains groundPE - armored housing

PE - motor(from motor harness)

main board

SCHEMATIC DIAGRAMS


Edition: 01

S3

S4

4

4

2

2

1

1

4 - 5


compressor terminal box

start

ing

capa

cito

r

starting relay

10 11

12 13

14PE terminal box

PE

+ +

starting capacitorterminal: 11 u. 13

mains - L

mains - N

fans

drive motor wiring

XB1

XB2

XM1

XM2

XM3

overtemp. switch

motor connections

bottom plate

XK/L

XK/N

wiring fans

M2 M3PE - LüfterPE - fans

5x 400 mm

PE - main boardunit ground, left side in front

PE - motor, 300mmto amored chamber in front

XG/L

XG/N

compressor wiring

PE - compressor to mains ground

shrinkage hose 12,7mm+ 1 cable tie SST1

120mm

2x fan washer 4,3mm


2x fan washer 4,3mm


SCHEMATIC DIAGRAMS


Edition: 01

4 - 6


switch

coil

temperature sensor

ove

rte

mp

.sw

itch

drive

overtemp. switch

lid lock, switches lid lock, coilfans compressor mains input

fan M3fan M2

mains switch

S0

unit socket

ad

he

sive

clip

PE - fan 2 PE-fan 3

fan

2,

left

sid

efa

n3

,rig

ht

sid

e

fro

nt

of

un

itcl

ip6

,5m

mcl

ip6

,5m

m

*

*

*

KM

free cable’s lengthup to first fixing clip

plug length from clipdesignation

XA

XB1/2

XM1/3

XC

XG

XK

lid switches S1 + S2

overtemperatur switch

motor, connect. 1, 2, 3

lid solenoid’s Y1 + Y2

compressor

fans M2 + M3

125 mm

140 mm

140 mm

150 mm

300 mm

210 mm

cable conduction unit

de

tail

vie

wo

ffa

ns

cab

leco

nd

uct

ion

by

clip

s

drive

SCHEMATIC DIAGRAMS


Edition: 01

4 - 7

Component Plan Main Board

XDplugservice

XUplugtemperature sensor

XM1-XM3terminaldrive motor

XApluglid lock, switches

XB1, XB2terminalovertemp. switch

XNterminalmains

XGterminalcompressor

XKterminalfans

XCterminallid solenoid

SCHEMATIC DIAGRAMS


Edition: 01

4 - 8

Wiring Diagram Main Board / Overview

Controller

PHASE1_U

PHASE2_U

PHASE3_UPHASE3_O

PHASE2_O

PHASE1_O

DECKELAUF

/UEBERSPANNUNG

TEMPERATUR

TEMP_0

TEMP_1

INHIBIT

DECKELSCHLOSS

KUEHLUNG

UEBERSTROM

LUEFTER

power electronic

+15

U+

PHASE1_U

PHASE3_OPHASE3_U

PHASE2_UPHASE2_O

PHASE1_OINHIBIT

U-*

protection circuit

+15

U+

ZK2

U0

U-

DECKELAUF

/UEBERSPANNUNG

UEBERSTROM

U-*

temperature measurement

TEMPERATUR

TEMP_0

TEMP_1

power supply

U-

U0

ZK2

U+

DECKELSCHLOSS

KUEHLUNG

LUEFTER

SCHEMATIC DIAGRAMS


Edition: 01

4 - 9

Wiring Diagram Main Board / Power Supply

ZK2

R18

470RSMD

D9

1N4007

Hilfszwischenkreis

R162R5NTC

C162n2

Y

EMI FilterFunkentstoerfilter

1

2 4

3L1

2x5.6mH2A

Power Connection

L1

2

XN F1

SI 8AT6.3x32 UL

PE

N

XPE1

R17120k

C150u6X

D4

P600K

R1456k

C13470u200VC19

220n400V

1 2BR1

BR_POWER

U+

U0

DC intermediate circuit

U-

R1556k

C14470u200V

C92n2

Y

C102n2

Y

D5

P600K

120V

T1

T120V/9VBV28969 GASS

V7SM4007SMD

V5SM4007SMD

V6

SM4007SMD

C201000u25V

C2110u

VI2GND

1

VO 3

V1780M05C

not placed

VCC

C7110u

SMD 25V TA

C12100nSMD

GND

R21

330RSMD

KUEHLUNG

C11100nSMD

V8

SM4007 SMD

1

2

Z10u1/100R

1

2

4

3K1a

REL120V HL1-HP-AC120

compressorXG

1

2

lid solenoidXC

1

2

V50

SM4007SMD

V61SM4007SMD

V62SM4007SMD

R28100R

SMD

C172n2

Y

R1947R

SMD

V2

T1213

R201kSMD

6 1

24

D6S21ME4

6 1

24

D7S21ME4

GND

to drive lid lock

to drive fans

to drive compressor

DECKELSCHLOSS

LUEFTER

R27

330RSMD

GND

R2247R

SMD

V3

T1213

R231kSMD

6 1

24

D8S21ME4

1

2

Z20u1/100R

R462R6 PTC

V63

SM4007SMD

fansXK

1

2

R29100R

SMD

C182n2

Y

R2547R

SMD

V4

T1213

R261kSMD

GND

SCHEMATIC DIAGRAMS


Edition: 01

4 - 10

Wiring Diagram Main Board / Temperature Measurement

C2100nSMD

R222kSMD

auto calibration

R1

1kSMD

3

21

8

4

D1ATLC272SMD

C5

1nSMD

VCC

R4270kSMD VCC VDD

(74HCT4052)

VEEC3

100nSMD

C4100nSMD

VSS GND

Voltage to Frequency Converter

R5100KSMD

R322kSMD 5

67

D1BTLC272SMD

X012

X114

X215

X311

Y01

Y15

Y22

Y34

INH6

A10

B9

X 13

Y 3

D274HC4052SMDR12

120RSMD 0.1%

R13100R

SMD 0.1%

GND

1 1

2 2

temperature sensorPt100XU1

R9390RSMD

TEMP_1TEMP_0

GND

Temp_1 Temp_0 X,YA B0 0 100R1 0 120R1 1 PT100

GND

COMP IN7

CURR IN1

THRES6

VS

8

R/C 5

F OUT 3GND

4

REF

CUR

2

D3LM331

C61u SMD 35V Ta

R1010kSMD

R1139kSMD

C810u

VCC

GND GND

C7310uSMD 25V TA

nicht bestuecktnot placed

temperature signal

C1220n

Fo

TEMPERATUR

R712kSMD

R6100KSMD

C71u SMD 35V Ta

GND

R82k7SMD

GND

GND

SCHEMATIC DIAGRAMS


Edition: 01

4 - 11

Wiring Diagram Main Board / Controller

C30100nSMD

C31100nSMD

VCC VDD

not placed

C23 22p SMD

C24 22p SMD

J1J 11.14112

GND

GND

GNDGND

R47100RSMD

98

D15D74HC14SMD EA/VP35

X121

X220

RESET10

INT014

INT115

T016

T117

P1.02

P1.13

P1.24

P1.35

P1.46

P1.57

P1.68

P1.79

P0.0 43

P0.1 42

P0.2 41

P0.3 40

P0.4 39

P0.5 38

P0.6 37

P0.7 36

P2.0 24

P2.1 25

P2.2 26

P2.3 27

P2.4 28

P2.5 29

P2.6 30

P2.7 31

RD 19

WR 18

PSEN 32

ALE/P 33

TXD 13

RXD 11

D13

80C21PLCC PROG 0978

AD0AD1AD2AD3AD4AD5AD6AD7

AD0AD1AD2AD3AD4AD5AD6AD7

WR_6X

GND 1312

98

21

1110

GND

ABCDEFG

DP

A B C D E F G DP A B C D E F G DP A B C D E F G DP A B C D E F G DP

E

F

H12 LED

GN 3MMH13 LED

GN 3MM

V10BC807

R311kSMD

V18BC807

R521kSMD

V19BC807

R531kSMD

V9BC807

R321kSMD

V17BC807

R511kSMD

C32

100nSMD

A1

B2

C3

G16

G2A4

G2B5

Y0 15

Y1 14

Y2 13

Y3 12

Y4 11

Y5 10

Y6 9

Y7 7

VCC

16

GND8D14

74HCT138SMD

C37 10u

11223344556677

8

8

9

9

10

10

11

11

12

12

13

13

14

14

XfDIP14

1312111098

12

VCC

11

22

33

44

55

66

77 8 89 910 1011 1112 1213 1314 14XF

DIP14

><

>>><

1

2

D15A

74HC14SMD

/RD/WR

ALE

ERRORINH

(Dreh)/Strom

/Unwucht

<<>

>

>>

CS 1

SK 2

DI 3

DO 4GND5

VCC8

NC6

NC7

D11

9346

/DECKEL/DECKELAUF

/LUEFTERVCC

56

D15C

74HC14SMD

GND

34D15B

74HC14SMD

R42

10k SMD

R41

10k SMD

VCC

1234

XE

Burndy 4pol

11 10D15E

74HC14 SMD

13 12

D15F

74HC14 SMD

LUEFTER

KUEHLUNG

VCC

GND

PC

GND

1234

XD

Burndy 4pol

S1 = LIDS2 = Quick RunS3 = STOPS4 = STARTS5 = - SPEEDS6 = + SPEEDS7 = - TEMPS8 = +TEMPS9 = - TIMES10= + TIME

V11

S2S1 S3 S4

V12 V13 V14

S5 S6 S7

V15 V16 V20 V53 V54

S9S8

V55 V56 V57

S10R304k7SMD

7 6 4 2 1 910 5 3

H7TDSG5150 M

7 6 4 2 1 910 5 3

H6TDSG5150 M

7 6 4 2 1 910 5 3

H5TDSG5150 M

A

B

H8 LED

GN 3MMH9 LED

GN 3MM

Time

7 6 4 2 1 910 5 3

H3TDSG5150 M

7 6 4 2 1 910 5 3

H4TDSG5150 M

Temp

7 6 4 2 1 910 5 3

H2TDSG5150 M

8x220R SMD

7 6 4 2 1 910 5 3

H1TDSG5150 M

D12 Q1 19

D23 Q2 18

D34 Q3 17

D45 Q4 16

D56 Q5 15

D67 Q6 14

D78 Q7 13

D89 Q8 12

C11

OC1

D16

74HC573 SMD

R5010kSMD

/RESET

VCC

R404k7SMD

VCC

GND

VCCREF1

RESIN2

CT3

GND4

VCC 8

SENSE 7

RESET 6

RESET 5

D10

TL7705 SMDC22100nSMD

C341u

GND GNDGND

C701u

SMD 35V TA

not placed

C28100nSMD

C29100nSMD

VDD

VDD

AD0

AD1

AD2

AD3

AD4

AD5

AD6

/RD

/WR

GND

VDD

GND

GND10

VDD11

ALE12

A013

A114

A215

DREHZ_IN16

DREHZ_OUT17

VDD18

WR_6X19

WR_7X20

TEMP221

MODE22

RESET23

BIT924

INH_IN25

TEST26

D7

9

D6

8

D5

7

D4

6

D3

5

D2

4

D1

3

D0

2

GND

1

VDD

68

WR

67

RD

66

TOUT

65

TE

64

TEMP5

63

TEMP4

62

TEMP3

61

GND 60

PH1_O 59

PH2_O 58

PH3_O 57

PH1_U 56

PH2_U 55

PH3_U 54

GND 53

VDD 52

TAKT55_IN 51

TAKT55_OUT 50

TAKT11_IN 49

PWM_IN 48

PWM_OUT1 47

PWM_OUT0 46

F_IN 45

F_OUT 44

Q_OUT27

Q_IN28

TAKT_029

TAKT_130

RD_4X31

RD_5X32

TEMPERATUR33

INTERRUPT34

GND35

TEMP136

TEMP037

VDD38

FEHLER39

UEBERSP40

INH_O041

INH_O142

GND43

D12

ASIC80

AD7

ALE

WR_6X

GNDVDD

VDD

8-BIT-Modus

PHASE1_OPHASE2_OPHASE3_OPHASE1_UPHASE2_UPHASE3_U

INHIBIT

GNDVDD

GND

GND

GND

R54

330RSMD

C3510u

C3610u

1 2

D17A

74HC14SMD

GND VSS

C27100nSMD

C6910u

SMD 25V TA

C7210u

SMD 25V TA

C25100nSMD

C26100nSMD

C33100nSMD

A B C D E F G DP

R1031kSMD

V45BC807

A B C D E F G DP A B C D E F G DP

R1031kSMD

V43BC807

V44BC807

11 10

D17E

to drive lid lock

to drive compressor

to drive fans

signal lid open

signal over voltage

signal over current

temperature signal

74HC14SMD

R1021kSMD

R55

10kSMD

56

D17C

74HC14SMD

98

D17D

74HC14SMD

DECKELAUF

DECKELSCHLOSS

VCC

VCC

R56

3k3 SMD

/DECKELAUF

/DECKEL

/RESET

ERROR

INH

GND

GND

GND

VDD

GND

GND

GND

TEMP_0TEMP_1

TEMPERATUR

34

D17B

74HC14SMD

R5710kSMD

/UEBERSPANNUNG

UEBERSTROM

GND

13 12

D17F

74HC14SMD

GND

SCHEMATIC DIAGRAMS


Edition: 01

4 - 12

Wiring Diagram Main Board / Protection Circuit

U0

U+

R9810k11W

motor overtempemperatureswitchXB1 2

XB1 F2E11T11G80118 GRAD

XAlid lock, switches1

1

2

2

XA1

R91220R SMD

not placed

+15

overcurrent signalUEBERSTROM

R9612kSMD

VCC

1

2

3

4

D34SFH6106-3SMD

C63100nSMD

C7510uSMD 25V TA

R9222kSMD

V52P6KE440A

Brake

Brems-Widerstand

R87

2M2SMD

R101470R9W

R24470R9W

C64100nSMD

R991M

V51

ZMM15

SMD

C76100u25V SMD

R8810k

SMD 1%C65

47pSMD

R9568kSMD

Resistor

3

2

1 5

6

7

4

D32TL081SMD

V49BUZ215

R107

15RSMD

GND

C68470pSMD

1

2

3

4

D33SFH6106-3SMD

V47BC817

GNDV48BC817

R93

2k2 SMD

R94

2k2 SMD

C60100nSMDR97

12kSMD

1

2

3

4

D35SFH6106-3SMD

lid open signal

excess voltage signal

C6610u

DECKELAUF

C7410u

SMD 25V TA

/UEBERSPANNUNG

U-*

GND

C6110nSMD

C6210nSMD

R100 0R18 2WR8910kSMD 1%

DC intermediate circuitvoltage control

U-

ZK2

relative excess voltage recognition

active, if the motor put back powerto the intermediate circuit

R901M

absolute excess voltage recognition

active, if the brake resistor is faulty or ifthe mains voltage is too high

over current recognition

Alternatively for V49:HGTP 10N50C1D

SCHEMATIC DIAGRAMS


Edition: 01

4 - 13

Wiring Diagram Main Board / Power Electronic

C47

10nSMD

V27BC807

GND

R76100kSMD

V28BC807

C5410u

SMD 25V Ta

C38100nSMD

C45100nSMD

C46100nSMD

R77

100kSMD

GNDGND GND

C5810u

GND

VCC

GND

C7310u

SMD 25V TA

not placed

INHIBIT

R81

47kSMD

V29

LL4148

1 2

D26A

74HC14SMD

3 4

D26B

74HC14SMD

R64

220RSMD

R65

220RSMD

1

2

3

4

D18SFH6106-3SMD

1

2

3

4

D19SFH6106-3SMD

VCCR581M

SMD

V40LL4148

V44

LL4148V46ZMM12SMD

C5510u

SMD 25V TA

R78

100k2W

V21BUZ215

C481nSMD

R48

15RSMD

U+

+15

V22BUZ215

C511nSMD

R102

15RSMD

R591M

SMD

V39LL4148

R66

220RSMD

R67

220RSMD

1

2

3

4

D20SFH6106-3SMD

1

2

3

4

D21SFH6106-3SMD

VCC

5 6

D26C

74HC14SMD

C39220pSMD

R82

33kSMD

V30

LL4148

9 8

D26D

74HC14SMD

GND

PHASE1_O

PHASE1_U

C40220pSMD

V31

LL4148

GND

R68

220RSMD

R69

220RSMD

1

2

3

4

D22SFH6106-3SMD

VCC

V43

LL4148V45ZMM12SMD

R80

100k2W

V23BUZ215

R103

15RSMD

MotormotorXM1

1

2

3

V24BUZ215

C491nSMD

R104

15RSMD

R601M

SMD

R611M

SMD

V38LL4148

C5610u

SMD 25V TAR70

220RSMD

R71

220RSMD

1

2

3

4

D23SFH6106-3SMD

1

2

3

4

D24SFH6106-3SMD

VCC

13 12

D26F

74HC14SMD

C41220pSMD

R83

47kSMD

V32

LL4148

11 10

D26E

74HC14SMD

GND

PHASE2_O

PHASE2_U

C42220pSMD

R84

33kSMD

3 4

D27B

74HC14SMD

GND

1 2

D27A

74HC14SMD

R73

220RSMD

1

2

3

4

D25SFH6106-3SMD

1

2

3

4

D28SFH6106-3SMD

V37LL4148

V41

LL4148V42ZMM12SMD

R79

100k2W

V25BUZ215

C521nSMD

R105

15RSMD

V26BUZ215

C501nSMD

R106

15RSMD

R621M

SMD

V36LL4148

C5710u

SMD 25V TA

R72

220RSMD

R74

220RSMD

VCC 1

2

3

4

D29SFH6106-3SMD

1

2

3

4

D30SFH6106-3SMD

13 12

D27F

74HC14SMD

C43220pSMD

R85

47kSMD

V33

LL4148

5 6

D27C

74HC14SMD

GND

Phase3_O

Phase3_U

C44220pSMD

R86

33kSMD

V34

LL4148

9 8

D27D

74HC14SMD

GND

11 10

D27E

74HC14SMD

R75

220RSMD

VCC 1

2

3

4

D31SFH6106-3SMD

R631M

SMD

V35LL4148

C531nSMD U-*

SCHEMATIC DIAGRAMS


Edition: 01

Disassembly


The index numbers stated in ( ) reappear within the spare part figures (block diagram, schematicdiagram of cooling plant) and the spare part lists.

5.1 Dismantling the Housing

5.1.1 Front Panel (100)• Open the lid. Pull out the mains plug.• Pull the unit a little over the table's rim and remove both screws (105) from the bottom of the front

panel.• Pull the front panel's lower rim a few centimetre to front and push it vertically out of the upper

plastic frame. ATTENTION! Do not pull the front panel too much to front! Doing so could tear offthe upper plastic holders!

• For continuing the disassembly remove or disconnect all wires.• Refitting the front panel is performed analogously in reverse order.

5.1.2 Lid (130)• Open the lid. Pull out the mains plug.• Remove the 4 Allen head screws (135), using a 5 mm key and take off the lid.

5.1.3 Casing (120)• Remove the front panel and the lid (see 5.1.1 and 5.1.2).• Remove the 3 Phillips screws (125) in front and both lateral.• Press both legs of the torsion spring down and fix them with a 5-mm set screw (or one of the 4

allen head screws) in the bore of the frame.• Lift the housing at the front and the rear, pull upwards past the legs of the torsion spring and flip

over to the front. If the leg is fixed with an Allen head screw, carefully widen the opening of thehousing with a screw driver!

• Pull off mains switch wires and take off the casing inclusive lid sealing.• Reassemble the device analogously in reverse order.• Insert the rubber sealing with the gluing seam in front and press on evenly all around

Disassembly


5.2 Replacement of the Sealing Elements

5.2.1 Motor Rubber Cover (221)Temperature probe and motor are glued to each other! When disassembling the two, damage to either or both ofthem cannot be excluded!• Open lid, unplug mains plug• Loosen rotor nut (90) with 10-mm socket wrench (91) and pull out rotor.• Press out motor cover from the lower edge to the middle and pull upwards off the plastic flange of

the motor.• Carefully pull motor cover and the two insulating washers (224) situated underneath upwards

along the drive axis and deposit on the side of the temperature probe within the rotor chamber.• When the motor cover is replaced, the temperature probe must be disassembled and adjusted

anew upon reassemble (see section on removal of the temperature probe)!• When the motor cover is reinserted, the upper rubber sleeve must be pressed in onto the plastic

flange (231) of the motor and must be pressed down so that the ring-shaped swelling fitsprecisely into the groove of the flange.

• Check: When finally flanging the inner sleeve lip (covers the upper rim of the plastic flange), theouter edge of the sleeve must slant downward so that condensation water may not enter themotor bearing.

• For fixing and as a protection against torsion, the motor cover plus flange must be secured at theedge with 3 drops of Loctite 495.

5.2.2 Lid Gasket (123)• Unscrew the casing (120) and pull it off from the bottom plate (360).• Separate the sealing's edge from the chamber's rim by pulling it inside.• Lift off the gasket on this place.• Work all the way round, until the gasket can be removed completely.

Assembling instructions• Push the gasket over the rim of the rotor chamber, starting with the gluing seam in front.• Work from both sides to the rear, but do not lengthen the gasket by this way.• While doing so press the sealing edge under the casing's rim.• Fold the rim of the rubber sealing over the rotor chamber's opening, starting from front to rear• Press the casing back again onto the bottom plate and assemble it analogously in reverse order.• The lid gasket must be completely sit close on the rotor chamber wall!• The rotor chamber must be sealed completely, when the lid is closed correctly!

Disassembly


5.3 Replacement of Mechanical Components

5.3.1 Lid Lock Assembly (210)The lid lock assembly encompasses both lid locks with two built-in microswitches each.• Disassemble housing (see 5.1.3).• Expose cables for microswitches and lid coils (undo cable tree, unscrew cable clips).• Remove outer (214) and both inner (215) fastening screws from each of the locking mechanisms.• Press microswitches (211) through the frame opening inside and pull both unlocking systems

upwards and out.

Note for mounting• Align rubber spacer (212) and screw locking systems on.• Do not over-tighten the screws!• The locking pins must not jam! Secure Screws with Loctite 221.• Fix the cable again to the cable tree and fasten with clips. Cables may not come in between fan

blades!• Once the instrument is installed, check locking mechanism several times by repeated opening

and closing.

5.3.2 Torsion spring (202• Disassemble housing (see 5.1.3)• Remove set screw(s) or Allen head screw (135) from legs in order to disassemble the housing.• Screw out fastening screw (pan-head 206) of the torsion spring and unbend the spring.• Remove fastening nut (205) of the swivel leg (203) on the side of the spring and push the shaft

(200) to the left until you can remove the spring.• For removal of the shaft, press right-hand slide bush (204) out and push the shaft to the right until

it leaves the left-hand slide bush.• Lift the shaft on the left and pull obliquely to the left out of the right-hand frame opening.

For mounting and adjustment of the torsion spring you must follow the instructions in section 2.4,please note also the drawing on page 6-4.

Disassembly


5.4 Replacement of Electrical Components

5.4.1 Fuses (113) on main board• Dismantle the front panel (see 5.1.1) and put the device far enough to the rear so that the panel

can be placed without stretching strain of wires on a suitable depot (e.g. box) in front of unit.• Check the micro fuses and if necessary replace them by equivalent and undamaged ones.• Perform a test run and search for blowing cause.• Reassemble the device analogously in reverse order.

5.4.2 NV-RAM (113) on main board

Please note NV RAM does not belong to the board and it has be ordered separately• Notice old displayed NV-RAM's version number when powering on (second No. in sequence)• Depose the front panel as described in 5.4.1.• ATTENTION - CMOS components! Discharge your body before handling!• Notice correct position of NV-RAM (8 pins) and pull carefully out of socket.• Reinsert the new NV-RAM correctly.• Reassemble the device analogously in reverse order and check the displayed NV-RAM's version

number.• Note! A new NV-RAM version will include parameter changes (e.g. new rotor type or any speed

limitations etc.) which can be verified in the display.

5.4.3 Microcontroller (111) on main board

The microcontroller normally comes with the board. It could be possible that there will be a changesometime necessary when there will be upgrades.• Notice the old Controller's version number when powering on (first displayed No.).• Depose the front panel as described in 5.4.1.• ATTENTION - CMOS components! Discharge your body before handling! Notice the correct

Controller position (CPU) and pull out carefully. ATTENTION - do not damage the socket (usecranked pliers)!

• Reinsert the new Controller chip correctly.• Reassemble the device analogously in reverse order and check the displayed Controller's version

number.Note! A new Controller version will include program changes (e.g. modifications of control functions)which might be verified only by measuring performances.

Disassembly


5.4.4 Main Board (110)The key and indication board is part of the main board and cannot be ordered separately!

• Depose the front panel as described in 5.4.1.• Disconnect all terminal connections as: mains supply XN, compressor box XG, both lid solenoids

XC and both fans XK.• Pull out all plug connectors as: protecting earth conductor PE, lid switches XA, temperature

sensor XU, motor lines XM (1-3) and over-temperature cut-out XB (1+2).• Remove all fastening screws of the main (117) and indication board (115), remove the washers

(116) and subsequently the boards.• Touch a grounded receptacle to discharge your body before touching the sensitive CMOS

components.• Take the NV-RAM (112) out of box (or re-use the old but trouble-free component) and insert it into

the socket of the new main board (see 5.4.2 and 5.4.3).• The components which is installed at the socket must be removed and scrapped• Mount the new board onto the front panel, replace the washers and re-tighten all nuts.• 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)!

5.4.5 Mains switch (121)• Remove the casing (see 5.1.3)• Compress both snap hooks of the mains switch and press the switch from inside out of the

casing's opening.• Pull off the cable plugs and transfer them to the new mains switch.• Spread the snap hooks a little, refit the mains switch and assemble the unit completely.

5.4.6 Mains input socket (361)• Remove both fixing screws (365) and pull out the socket carefully• Pull off the cable plugs and transfer them to the new socket.• Insert the socket and re-tighten it on the tab of the bottom plate.

Disassembly


5.5 Replacement of Drive Components

5.5.1 Drive Motor (230)• Remove the casing (see 5.1.3).• Remove the rubber flange and both isolating disks (see 5.2.1).• Disconnect the leads for motor XM (1-3) and over-temperature switch XB (1+2)• Set the wires free from cable harness and open the cable retaining strap.• Unscrew the 3 Allen head screws (240) with a 5mm hexagon key having a length of 15cm and

remove them together with the toothed discs (239).• Lift the motor a little, unscrew the grounding receptacle and remove the motor out of the spin

chamber. Take care when stripping the wires through the isolation!• Reassemble the motor analogously in reverse order and fasten the 3 allen head screws and lock

them with Loctite 221. Perform the distance check as described in 2.5 and a test run. Check thesense of rotation (see imprinted arrow direction) and mix up 2 leads on terminal XM in case ofdisorder.

5.5.2 Motor supports (235)All 3 rubber supports (235) have to be replaced at the same time! We recommend a yearlychange at every general inspection. By the way the 6 double-sided sandpaper discs (236) mustbe exchanged, too. A maintenance kit # 70904580 is available

• Remove the drive motor (see 5.5.1).• Remove all 8 hexagon head screws (308) for the fastening of the traverse support and take it out

of the frame's left side.• Unscrew the 3 nuts and remove the 3 rubber supports together with the 6 sandpaper discs.• Fasten the new motor supports evenly (use a torque key: 10 Nm) and secure the nuts (238) with

screw locking lacquer (Loctite 221).• Reassemble the device in reverse order, thereby pay attention to the installation and adjustment

instructions in section 2.5! At last perform a test run.

Disassembly


5.6 Replacement of Parts for the Refrigeration System

5.6.1 Temperature Sensor (220)For mounting the temperature sensor, please note the drawings page 6-5 and 6-6!• Disassemble housing (see 5.1.3) and unplug XU.• Uncover the connecting cables of the cable tree and loosen the cable clips• Disassemble motor cover (see 5.2.1) and remove complete with temperature probe (sensor).• Mount new temperature probe and new motor cover (221) according to former positioning,

making sure that the tip of the probe is located within the labelling window on the motor cover(check from above, see page 6-5 figure B)

• Reassemble motor cover with temperature probe according to section 5.2.1.• Adjust the distance between temperature probe and motor cover by pulling or pushing the cable

for the temperature probe in the slanted opening of the motor cover until the distance between tipof the probe and motor cover is 2.5 + 0.5 mm

• Reassemble centrifuge in reverse order. Insert rotor and make sure that neither the temperatureprobe nor spacer nor temperature probe cable rub against the rotor!

• If the adjustment is correct, fix temperature probe on both sides and the temperature probe cableat the motor cover using a drop of Loctite 495 (#20470056).

5.6.2 Fans (310)Both fans (ventilators) aspire air for cooling from the front through the ventilation slots and the wiremesh. The air is forced past the power transistors, the lamellae of the condenser and the motorwindings and exits through the rear ventilation slots.Take care that the Armaflex cut (218) seals the condenser tightly against the casing. Otherwise thecirculating air may form shortcuts via the slots or openings, thereby reducing cooling power andlongevity of both drive and compressor.• Remove the casing (see 5.1.3)• Set the wires free from cable harness and open the cable retaining strap.• Remove the fastening screws (311), take out the defective fan.• Pull off the wire connectors, unscrew the protecting earth conductor and remove the defective

fan.• Transfer grounding conductor to the new fan and reconnect the wires.• Pay attention to air flow direction (see imprinted arrow). Reassemble fan and unit in reverse order

and take care to the Armaflex sealing.

Disassembly


5.6.3 Components of the Cooling CycleWhen working on the cooling cycle the general guidelines regarding the handling ofrefrigerants must be observed! The compressor oil must be recycled, too, in case of acompressor break down!

Refrigerant: R134a (CFC-free)Filling quantity: 135 g (individually the compressor labelled amount is relevant)

There must not be used any kind of hoses, armatures and manifold gauges which are alreadycontaminated with CFC based refrigerants. Otherwise the compressor oil will become anaggressive condition and will destroy the compressor in a short time.

Procedure for replacing defective components of the cooling cycle• Mount a pinch valve onto the compressor's service line (suction line)• Suck off the refrigerant and recycle it• If the compressor (340) is defective, let the oil run out into a bowl and recycle it, too.• Unsolder the defective component(s) and replace additionally the dryer cartridge (325).• Let a little amount of dry nitrogen gas stream through the tubes when soldering• Do the evacuation and refill the system with the exact amount of refrigerant via a new external

dryer (check amount with a balance or filling cylinder)

The pinch valve must not be left on the line! Close the system hermetically (solder close) and fix theservice lines using cable ties with a little drop to let the oil run back after transportation.

Re-assemble the unit in reverse order and test the cooling system (see Servicing Schedule).

6 - 1

Housing parts, Boards

x1000

123

100

110

112

115

116115

101

95

120

124

91

90

82

83

80

130

122(50)

135

125

125

126

105121

113

110

81

accuSpin Micro RTM

21.02.03

Edition: 01

BREAK DOWN DRAWINGS

6 - 2

Frame and Drive parts

239

232

(62)

27,6

2,5

231240

234(61)

218

247

247

245

252

210

210 205

220

202

200

236

210

216215

219 236

223225224

231

230

31

30

221

222

237

214

210

210210

238

235

201

(40)

206

203

204

247

245

207

246

245

accuSpin Micro RTM

21.02.03

Edition: 01

BREAK DOWN DRAWINGS

6 - 3

Parts on Bottom plate

303(62)

314

313 331

381

32571

364

361

345

380

362363

365

370

374370

360382

330

333

310

314

313

331332

334

312

70

347

340

311

301

300

305

306

309

346

307308

302

340342340

322 320

accuSpin Micro RTM

21.02.03

Edition: 01

BREAK DOWN DRAWINGS

6 - 4

Mounting of Torsion Spring

15°

1. Press in plain bearing bush (204)

1. Press in plain bearing bush (204)

Screw with base (206)Molykote TP 42 (40)

5. Slip on torsion spring (202)

4. Grease Molykote TP 42, ca. 5g (40)

9. Screw nut M8 (205) loosely on12. Tighten nut M8 (205)

3. Push on dowel pin (201)

11. turn to the front11. grip the shaft

16

.M

an

ua

llyre

lea

se

the

locks

6. Push in the shaft (200)6. Push shaft (200)through the

Loctite 221 (61)

2. Fix screw M6x12 (207)

Bushing nipples 14x10x3 (208)

Loctite 221 (61)

8. Push on both legs (203)

16., 20. Opening angle 15 - 30°

10. Screw in dowel pin

(11)

13.putlid

(130)

inpla

ce

18. Close the lid and replace the rear cup screws on both sides by set screws.Attention! Set screws must not jut out of the legs.

19. Screw lid off and mount housing. Reassemble lid as descripted above (13.)20. Check opening angle

xx. see mounting and adjustment of the torsion spring, page 4-10/11(xx) Index number of the spare part list

17. Loctite 221 (61)

(5)

2.

14.T

ighte

nscre

wM

6x6

(135)

15.R

epla

ce

setscre

wby

scre

wM

6x6

(135)

accuSpin Micro RTM

21.02.03

Edition: 01

BREAK DOWN DRAWINGS

6 - 5

Mounting of Temperature Sensor

X=27.6 ±0,5

Y=2.5 ±0,5

Casing (120)

left side

front side

Loctite 495 (62)

position indicator

Loctite 495 (62)

Screw M4x10 PA (223)

Figure A

Figure B

Support (222)

Temperature sensor (220)

Cover (221)

accuSpin Micro RTM

21.02.03

Edition: 01

BREAK DOWN DRAWINGS

6 - 6

Mounting of Temperature Sensor

correct not correct

not correct not correct

not correct

figure C

figure E figure F

figure D

accuSpin Micro RTM

21.02.03

Edition: 01

BREAK DOWN DRAWINGS

Calibration Certification ProcedureaccuSpin Micro R

accuSpinMicro R 1 of 2

Revised - 11/02/20031. General

Successfully completing the Preventive Maintenance Checklist and Calibration CertificationProcedure as outlined will ensure that the instrument is properly maintained and calibrated toKendro specifications.

2. Equipment Required

• Digital Multimeter• Temperature Meter w/probe• Stopwatch• Photo Tachometer• Safety Tester• accuSpin Micro R Service Manual• Centrifuge Operating Manual

Note: Check calibration due date on all test equipment before starting certification.

3. Documentation Required

• Preventive Maintenance Procedure and Checklist (Service Manual)• Calibration Certification Procedure and Form• Certification Label• Certificate of calibration for each piece of test equipment used to perform the certification• Training Certificate

Preventive Maintenance Check

• Perform Preventive Maintenance checks as outlined in the Service Manual to ensure theinstrument is in good working order without performing any calibrations.

• Complete the Preventive Maintenance Checklist. (calibration data will be filled in afterCertification)

Calibration Certification

• SPEED

Install a rotor, set the speed control to 3000 rpm and start the centrifuge. When the speed hasstabilized, measure the actual speed with an external tacho (photo tacho on multimeter wherespeed = frequency[no conversion]). Record measured speed and displayed speed in the speedsection of the certification form. Set the speed control to max. rpm and after stabilization, recordmeasured speed and displayed speed in the speed section of the certification form. Determine ifthe speeds recorded meet the specifications on the form. If the specifications are met, proceed tothe next section. A re-calibration of the instrument is not possible.

Calibration Certification ProcedureaccuSpin Micro R

accuSpinMicro R 2 of 2

• TEMPERATURE

Place water into the rotor or bucket. Select a temperature of +4°C, maximum allowed speed ofthe rotor and time of minimum 3 hours. After that record the displayed temperature, measuredtemperature inside rotor or bucket after rotor has come to rest, in the temperature section of thecertification form. Repeat the test at 15°C. Record the values in the temperature section of thecertification form. Determine if the temperature values recorded meet the specifications on theform. If the specifications are met, proceed to the next section. A re-calibration of the instrumentis not possible. Initial the temperature section. To pre-cool the rotor select half maximum speed.

• TIME

Using a stopwatch, check the timer by setting a 10 minute run. Start the centrifuge and measurefrom the time the start button is pushed until the timer switches to stop. Record the measuredtime in the time section of the form. Determine if the time value recorded meets the specificationsin the form. If the specifications are met, proceed to the next section. A re-calibration of theinstrument is not possible. Initial the time section.

• SAFETY TEST

Using safety tester and connect the centrifuge to it. Measure Insulation resistance.. Select to EarthConductor resistance and touch with probe all mechanical part of the centrifuge. Resistance mustbe <0.2 ohms at all points otherwise check for good grounding. Measure accessible current toprocedure in the service manual.

Documentation

After filling in the certification information complete the following documentation:

• Log test equipment data on calibration certification form.• Review P.M. checklist and calibration certification form to ensure that all data and required

information has been recorded properly.(including your signature and date)• Fill out a certification label and place it on the right side of the centrifuge where visible or at a

location selected by the customer.• Ask the customer to sign the calibration certification form and place a copy in the customer’s

Certification Record Book for that centrifuge.• Place copies of the P.M. checklist and Field Service Report in the same Record Book.• Provide copies of your training certificate and test equipment calibration certificates if

requested by the customer.


Fisher CentrifugesPREVENTIVE MAINTENANCECHECKLIST

accuSpin Micro R

Type S/N

Rotor Inspection Performance Checkso Check for corrosion and wear o Acceleration time ______ secondso Inspect rotor lid locking screw o Instrument top speed _________rpm Serial numbers: o Deceleration time _______ seconds 75003243 o Time (10 minute set) ____ actual min:sec

o Temperature (4°C set)______ actual (°C)

Preliminary Checks Imbalanceo Rotor chamber (defrost) o Centrifuge stable and levelo Inst. Environment (level & clearance) o Centrifuge shuts off w/proper weighto Clean instrument & condenser

Pre-run Checks Safety testo Ground continuity o Accessible leakage current <3500µAo Line voltage ________V AC o Insulation resistance >10 Megaohmo Display segments on power-up o Earth Conductor Resistance <0.2 Ohmo Door interlock and latcho Drive stop & Door unlatch (50 rpm)O Compressor current drawo Fan operation

Mechanicalo Motor bearingso Microprocessor Initialization (if required)

Comments:

accuSpinMicro R

Calibration Certification accuSpinMicro RPage 1

Preventive Maintenance Checklist Complete Repair and Calibration Recertification

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

Performance Certification

SPEEDStandard Test Rotor Used:

Set Speed (rpm) Tolerance DisplayedSpeed(rpm)

MeasuredSpeed(rpm)

Meets Spec.(y/n)

Passed(Initials)

13000 +/-5%+/-5%

Custom Test Rotor Used:+/-5%+/-5%

TEMPERATUREStandard Test Rotor Used:

CalibrationTemp.(°C)

Tolerance(K)

DisplayedTemp.(°C)

MeasuredTemp.(°C)

MeetsSpec.(y/n)

Passed(Initials)

+4 +/- 2+15 +/- 2

Custom Test Rotor Used:+/- 2+/- 2+/- 2

TIMEStandard Test Rotor Used:

Timer Set(min.)

Tolerance(sec.)

MeasuredTime(m/s)

MeetsSpec.(y/n)

Passed(Initials)

10 +/- 30Custom Test Rotor Used:

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

TEST EQUIPMENTType Model Serial Number Date of Next Calibration

StopwatchTemperature MeterPhoto Tachometer

Safety Tester

SAFETY TESTInsulation resistance

>10 MegaohmEarth Conductor Resistance

<0.2 OhmAccessible Current

<3500µA

Revised 12/02/03Certified By:_____________________________ Reviewed By:________________________________ Expiration Date ______ Signature Date Customer Signature DatePage 1 of 1 Use ONLY Black permanent ink when filling out. Leave NO blank spaces. Feb, 2003

Spare-Part-List

FISHER ACCUSPIN MICRO R 120V/60HZ75005542

Fisher Scientific

Index Partno. Text

01from Serial-No. to Serial-No.

-

00030 20220152 CABLE CLIP00031 20220434 HOSE,SHRINK00040 20270096 MOLICOTE00050 20270054 DELOMET 230100060 20270076 SAFTY PAINT00061 20270051 LOCTITE00062 20270056 LOCTITE 49500070 20270079 FREON R134A00071 20270095 SILFOS00080 75003243 FISHER MICROLITER PP-ROTOR00081 20290607 O-ring 36,17 x 2,6200082 75003333 AEROSOLTIGHT CREW CAP FOR #3243&324400083 20056212 SEAL00084 75003327 FIXED ANGLE ROTOR FOR PCR STRIPS00090 70056208 NUT00091 20360072 SPANNER 10 MM00095 20190247 MAINSCABLE00100 20055502 PANEL00101 20058201 OVERLAY Fresco 120V/60Hz FISHER00105 20460133 SCREW 3X1400110 20150295 Mainboard 100-120 V green display00112 70904167 EEPROM00113 20230211 FUSE 8 A, SLOW BLOWN00115 20460137 SCREW 3X800116 20480124 WASHER00120 20055501 HOUSING00121 20180581 MAINS SWITCH00122 20055506 GRILL00123 20055520 SEAL00124 20055538 INSULATION00125 20460088 SCREW M5 X 800126 20055539 ISOLATION00130 70904163 LID00135 20510268 ALLEN SCREW00200 70055532 SHAFT00201 20490377 PIN00202 20055529 SPRING00203 70055533 HINGE

Monday, 24. March 2003

page 1

Spare-Part-List


Fisher Scientific

Index Partno. Text


-

00204 20350220 BEARING00205 20420139 NUT00206 20037565 SCREW00207 20430215 SCREW M6X1000208 20290408 SEAL00210 20904501 Lid Lock 120V 60Hz00214 20460133 SCREW 3X1400215 20510271 SCREW00216 20480244 LOCK WASHER00218 20055507 INSULATION00220 20140614 Temperature sensor00221 20055511 COVER00222 70055509 SUPPORT00223 20470253 SCREW, PLASTIC00224 20055524 INSULATION00225 20055525 INSULATION00230 20210349 MOTOR00231 20490376 BRACE00232 20290567 O-RING00234 20440288 SCREW M 3 X 600235 70904580 Parts f maintenance Biofuge fresco00236 70904580 Parts f maintenance Biofuge fresco00237 20480251 SECURING WASHER00238 20420070 NUT M 600239 20480251 SECURING WASHER00240 20510137 SCREW M 6 X 1200245 20460094 SCREW M 4 X 800246 20180138 CONNECTOR00247 20480108 FAN WASHER A 4,300252 20220510 DOUBLE CONNECTOR MALE00300 70055515 CHASSIS00301 20430216 SCREW M 6 X 1200302 20480251 SECURING WASHER00303 20220472 PLASTIC RING00305 70055516 TRAVERSE00306 20480193 WASHER00307 20480251 SECURING WASHER00308 20430216 SCREW M 6 X 12


page 2

Spare-Part-List


Fisher Scientific

Index Partno. Text


-

00309 20220530 ADHESIVE CLIP00310 20210255 FAN00311 20510056 SCREW M4X2000312 20480244 LOCK WASHER00313 20460094 SCREW M 4 X 800314 20480108 FAN WASHER A 4,300320 70901150 EVAPORATOR00321 20460151 BOLT M4X800322 20480135 WASHER00325 20240477 FILTER-DRYER00330 20055517 CONDENSER00331 20430207 SCREW M 4 X 1000332 20480244 LOCK WASHER00333 20270072 ISOLATION, TAPE00334 20290568 RUBBER00340 20240481 COMPRESSOR00342 20480251 SECURING WASHER00345 20430221 SCREW M 6 X 3000346 20270072 ISOLATION, TAPE00347 20270072 ISOLATION, TAPE00360 70055514 METAL BASIS00361 20049932 FOOT00362 20480193 WASHER00363 20430216 SCREW M 6 X 1200364 20180608 RECEPTACLE00365 20440023 SCREW M3 X 800370 20420076 HEXAGONAL NUT M400374 20460104 SCREW M4X25


page 3

Documents

AccuSpin Micro R 120 V