service manual - sorvall - heraeus - thermo scientific - megafuge 8 sl8 st8 - v180113

8/20/2019 Service Manual - Sorvall - Heraeus - Thermo Scientific - Megafuge 8 SL8 ST8 - V180113

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original version of this manual is valid. Thermo Scientific cannot guarantee the accuracy or completeness of subsequent copies

Service ManualHeraeus Megafuge 8Sorvall ST8

Thermo Scientific SL8

PN: 12007200-01

The original version of this manual is valid. ThermoScientific cannot guarantee the accuracy or

completeness of subsequent copies


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iTABLE OF CONTENTS

TABLE OF CONTENTS

Introduction iii

Revision Control iv

Chapter 1 Technical Data 1-1

Chapter 2 Service 2-1

Servicing Schedule 2-2

Trouble Shooting 2-4

Error Codes 2-6

Test Points 2-13System Menu and Service Menu 2-15

Imbalance Behavior 2-18

Cleaning of Instrument Parts 2-18

Electrical Safety Check 2-19

Chapter 3 Functional Description 3-1

Block Functions 3-2

Main Board Functions 3-3

Display 3-5

Speed, Imbalance and Rotor Detection 3-5

Lid Lock System 3-5

Chapter 4 Electrical Diagrams 4-1

Overview 4-2

Power Supply 1 4-3

Power Supply 2 4-4

Frequency Inverter 4-5

Protection Circuit 4-6

Controller 4-7Imbalance RPM 4-8

Key Control 4-9

Chapter 5 Disassembly of Instrument Parts 5-1

Disassembly of Mechanical Parts 5-2

Replacement of Electrical Components 5-4

Replacement of Drive Components 5-6

Removal of AutoLock 5-7


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INTRODUCTION ii

Chapter 6 Calibration (Reference Measurement) 6-1

Introduction 6-2

Requirements 6-2

Calibration (Reference Measurement) Procedure 6-3

Documentation 6-5

Chapter 7 Spare Parts 7-1

Preventive Maintenance Checklist A-1

Calibration Certification Form B-1

Technical Bulletins C-1


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INTRODUCTION iii

INTRODUCTION

CAREFULLY READ THIS MANUAL BEFORE SERVICING YOURINSTRUMENT.

INFORMATION CONTAINED IN THIS DOCUMENT IS THE PROPERTY OFTHERMO FISHER SCIENTIFIC;IT MAY NOT BE DUPLICATED OR DISTRIBUTED WITHOUT THEOWNER’S AUTHORIZATION!

PURPOSE

This manual contains maintenance instructions intended for use by a qualifiedmaintenance or service technician.

It is organized to provide information on the theory of operation to assist introubleshooting for personnel of Thermo Fisher Scientific and authorizedservice organizations. Moreover, it outlines parts replacement and calibrationprocedures for putting the centrifuges back into service.

Should a specific maintenance problem arise which is not covered in thismanual, please contact our after sales or product support department.


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REVISION CONTROL iv

REVISION CONTROL

Revision Change Date

01 Initial release 18.01.2013


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Heraeus Megafuge 8Sorvall ST8Thermo Scientific SL8

Environmental conditions

Permissible ambient temperat

Timer rangeMax. speedMin. speedMax. kin. energyMax. sound level at top speed

Vol

HePoRaHeiHei

WiDeWerot

Rotor /bucket

Rotor nam

75005701 TX-150 Rot75005702 TX-150 Round

75005703 TX-150 Oval b75005704 TX-100S75005705 TX-10075005706 M-10 Roto75005723 M-10 Unsealed75005721 M-10 Sealed B75005600 MT-12 Rot75005709 HIGHConic III75003623 CLINIConic R75005719 MicroClick 30x275005715 MicroClick 24x275003473 Hematocrit R75005643 PCR Strip Roto

T

- Indoor use only- Max. height above sea level 20

- Max. relative humidity 80% at 3

- Linear decrease until 50% relatire +2°C to +35°C

10sec – 99h 59min and hold mode d16000 rpm a300 rpm a< 8.2 kNm< 61 dB (A)

t Version 120V 230V

t output BTU/h 1060er consumption 310 W

ed current 5.0 A 2.0 Aght (lid closed) 31 cm / 12.2 inght (lid open) 67 cm / 26.8 in

th 37 cm / 14.6 inth 48 cm / 18.9 in

ight (withoutor)

35 kg / 77 lbs

eAllowableimbalance

[g]max. speed ma

or 10 4500 3ucket 10 4500 3

cket 10 4500 310 4500 310 4500 3

r 10 4400 2ucket 10 4400 2

ucket 10 4400 2r 4 13000 1otor 10 8700 1

otor 10 4400 3Rotor 4 14000 21Rotor 4 16000 2tor 1 capillary 13300 1

r 8x8 4 15000 1

1-1CHNICAL DATA

0m°Ce humidity at 40°C

eviation: +/- 10 sec.ccuracy: +/- 10rpm

ccuracy: +/- 10rpm

x. x g max radius

260 14.4260 14.4

260 14.4215 14.2260 14.4576 11.9576 11.9381 11.0438 8.7155 12.0

030 14.0694 9.9327 8.5810 8.5860 7.1


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2-1SERVICE

SERVICE

Servicing Schedule 2-2

Maintenance Routine without dismantling the centrifuge 2-2

Maintenance Routine after dismantling the centrifuge casing 2-3

Trouble Shooting 2-4

Malfunctions without Error Messages 2-4

Error Codes 2-6

Overview 2-6

Detailed Error Description an Action Plan 2-8

Test Points 2-13

System Menu and Service Menu 2-15

How to enter the System Menu 2-15

How to enter the Service Menu 2-15

System Menu Structure 2-16

Service Menu Structure 2-17

Imbalance Behavior 2-18

Cleaning of Instrument Parts 2-18

Electrical Safety Check 2-19


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2-2SERVICE

Servicing schedule

This chapter describes the maintenance work to be performed on a yearly basis. A checklist can be found in the attachment A-1.

Maintenance routine without dismantling the centrifuge

Electrical installation and safety

Switch OFF the centrifuge and disconnect the unit from power, check voltage supply and mainsfusing (16 (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.

Location and mechanical installation

Check the base (ground, table, trolley with lockable wheels etc.) for resonance-free and stableconditions.

Check for a well ventilated place and sufficient distances to walls or adjacent equipment, withoutexposition to direct sunlight.

Check the leveling of the centrifuge drive with help of a spirit level.

Lid latch mechanism and safety circuit

Connect the centrifuge to power and switch ON.

Check for correct lid closing and opening - if in disorder, readjust lid, hinges and/or lid latch.

Check the rubber gasket for correct sealing and replace, if damaged.

Check gas lid stay for correct function.

Check the electronic safety circuit: start the centrifuge. Let it shortly run and press stop. The lidmust not be unlocked by the microprocessor as long as the speed is more than 60 rpm - if safetycircuit is out of function, replace main board.

Cleanliness of rotor chamber and motor cover

Open the lid and remove the rotor by pressing the green AutoLock button in the center of therotor.

Clean the spin chamber with a dry and absorbent cloth (remove all dust and moisture - see alsopage 2-18 for cleaning).

Check the cleanliness of the motor cover and take special care of the slot between the bowl andthe motor cover: penetrating fluids can damage the motor and/or electronics and foreign objectsmay block the air flow.

Condition and sealing of rotors and accessories

Check the condition of rotors and accessory parts (especially all supporting or stressedpartitions): the rotor and/or accessory parts must not be used any longer, if there are visibletraces of mechanical damage or corrosion.

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


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2-3SERVICE

AutoLock and motor shaft

Check the perfect condition of the AutoLock system. In case of malfunction use tool Kit# 70904693 to change the AutoLock. (see page 5-7)

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

Temperature level

Check the air inlet slots for free ventilation. Insufficient air flow will lead to an inadmissibletemperature rise of the motor and electronic parts.

Imbalance behavior

install available and empty rotors and check the imbalance behavior with rotor dependant cut off and run through weights (see page 2-18) and replace worn anti vibration mounts, faulty mainboard or sensor cover.

Maintenance routine after dismantling the centrifuge casing

Motor supporting elements

Check the anti vibration mounts of the drive motor and replace them in case of increased rubber abrasion or abnormal occurrence of imbalance but at least after 3 years of usage.

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.

Clamp and plug connections of wires

Check the clamp and plug connections of all leads on the main board and all electrical Protectionearth core and grounding connections.

Check the grounding connection for continuity and all grounding plug connectors. (see also page2-19 Electrical Safety Check)

Check insulation resistance and accessible current. (see page 2-19)


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2-4SERVICE

Trouble shooting

Malfunctions without error code

Error Error Cause Possible Error

Source Corrective Procedure

Displayremains off

no mainsvoltage supply

power switch withintegrated thermal

over current cut outCheck supply voltage at X16. If no voltageis present, check power switch, instrument

socket and voltage supply.Replace defective parts

mains fuse or circuitbreaker failed

faulty mains cord or instrument socket

no lowvoltage

supply for display

faulty connectionfrom main board to

display

Check presence of 5V (LED V75), 15V(LED V78) and 24V (LED V79) controlvoltages on main board. If a voltage ismissing (LED off) replace main board.Check the display cable (SSTP patch

cable). Replace the display.

faulty display or main board

Displaybacklight is

lit, butnothing

displayed

or displayshows

cryptically(wrong)

characters

data

connectiondisturbed

faulty connection

from main board todisplay

Check for interferences such as radios,micro wave ovens, etc. Check for good

grounding connection. Check the displaycable (SSTP – shielded cable). If no other

error source can be identified, replace mainboard.

No displaybacklight

LCDpowersafe

mode

Press any button. To switch off the LCDpowersafe mode enter the system menu.

faultybacklight

faulty backlight Replace display.

Displayshows

OOTI N …

CPU programreset may be

caused byEMI

supply voltage drop(>10%)

(Let) improve the power supply. If thevoltage drops often, use a voltage

stabilizer.

bad or missinggrounding

connectioncheck all grounding connections


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2-5SERVICE

Error Error Cause Possible Error


Drivemakesnoises,

no goodseparation

result

mechanical

worn anti vibration

mounts

Check anti vibration mounts and replace if worn or older than 3 years.

(see page 5-6)

Trunnions of swinging bucket

rotor not greasedsufficiently

Inform users that trunnions must becleaned and greased on a regular basis.

See user manual for more information.

Buckets of swingingbucket rotor notweight identical

Check weight index on buckets.

bad motor bearings Turn motor by hand. If a scratching noise is

audible, replace complete motor.

electrical

missing phase Check winding and insulation resistance of the motor (see test points). If the motor and

it’s leads are ok, replace main board.

faulty electronic

Buttonsinoperative

overlay or overlay

adaptor hasno contact

ribbon cable broken,or no contact

Check correct sitting of ribbon cable inoverlay adaptor. Check ribbon cable

between overlay adaptor and main board.Replace defective overlay, overlay adaptor

or ribbon cable.


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2-6SERVICE

Error-Codes

Should multiple errors occur at the same time, the centrifuge will display up to 3 errors at once, byalternating them on the display.

Overview (details on following pages)

Error Description

E-001 System clock unstable

E-002 Main state machine corrupted (software)

E-005 System reset by watchdog

E-008 Check sum error ROM test

E-010 NV-RAM communication error

E-011 NV-RAM does not match E-PROM

E-012 Check sum error NV-RAM constant area

E-014 Chamber over temperature: t > 50°C

E-015 Temperature sensor open

E-016 Temperature sensor short

E-017 Speed above rotor recognition speed limit

E-019 Rotor code not in rotor table

E-020 Rotor code corrupted

E-021 Rotor recognition and speed 1 measurement disturbed

E-022 Speed 2 measurement disturbed

E-023 Difference between speed 1 and speed 2 signals

E-025 Lid could not be openedE-027 State of lid latch micro switches implausible

E-029 Motor does not turn

E-030 Control voltage failure

E-031 Motor over temperature: t > 150°C

E-033 High pressure in cooling system

E-034 Over voltage in power circuit

E-036 Over voltage or short circuit at inverter

E-038 Lid latch current abnormal (Speed 0)

E-040 Acceleration too slow

E-041 Offset voltage of imbalance sensor implausibleE-045 Safety test during restart failed

E-046 Lid opened during run

E-048 Software state machine error




E-053 Software primary mask reading error

E-054 Software primary mask writing error

E-060 Chamber under temperature: t < -20°C



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2-7SERVICE

Error Description

E-074 Latch motor control fault

E-077 System health check error

E-078 Set speed above max speedE-079 Speed above rotor maximum: >25rpm

E-080 Rotor detection failed

E-081 Second top speed check failed

E-083 Brake resistor over temperature

E-098 Imbalance detected

E-101 Temperature measurement shows great deviations to expected values

E-104 Temperature measurement could not be completed


E-106 Lid latch current abnormal (Speed >0)

E-107 Main board over-temperature


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2-8SERVICE

Detailed error description and action plan

Error Possible Error


Possiblespare part

E-001 System clock on

main board failed

The rotor is coasting freely.Wait for rotor to stop and turn the power switch off. Wait 5

seconds before turning it back on. If the error persists,replace main board.

Main board

E-002 Internal software

problem



Main board


problem



Main board

E-008 ROM failed



Main board

E-010

Wrong NV-RAM,communication

between NV-RAMand main controller

disturbed


seconds before turning it back on. If the error persists,check NV-RAM and socket.Insert the correct NV-RAM

NV-RAM

E-011check versions of

NV RAM andE-PROM

replace NV RAM with correct one NV-RAM

E-012 NV-RAM failed

The rotor is coasting freely.

Wait for rotor to stop and turn the power switch off. Wait 5seconds before turning it back on. If the error persists,

replace NV-RAM.

NV-RAM

E-014

Compressor doesnot work,

low refrigerant,fan inoperative

Refrigerated units only: The rotor is decelerated withmaximum braking. DO NOT TOUCH ANY INSIDE PARTS

AFTER OPENING THE LID! BURN HAZARD! Performcompressor test (Service Menu), check fan and remove

dust from condensing unit. Replace defective parts.In case of low refrigerant, use leak detector, repair leak

and recharge s ystem.

Compressor FanTEV

Refrigerant

E-015

Temp. sensor,

control circuits

Refrigerated units only: The rotor is decelerated withmaximum braking. Disconnect PT1000 from main board

(X3) and check resistance(R = 1,000Ω @ 0°C or 1,078Ω @ 20°C). Replace faultyPT1000 or faulty main board.

PT1000

E-016 Temp. sensor,

control circuits

Refrigerated units only: The rotor is decelerated withmaximum braking. Disconnect PT1000 from main board

(X3) and check resistance(R = 1,000Ω @ 0°C or 1,078Ω @ 20°C). Replace faulty

PT1000 or faulty main board.

PT1000

E-017 Power interruption,

Reset during run

After power reset the speed is above 2,000rpm. The rotor is coasting freely. Check mains power supply. Restart

centrifuge. If the error persists replace main board.Main board


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2-9SERVICE



Possiblespare part

E-019

Wrong rotor installed,

old version of NV-RAM

The rotor is decelerated with maximum braking.

Install correct rotor.Install latest NV-RAM version.

Rotor

NV-RAM

E-020

Wrong rotor installed,

Rotor codingfaulty,

Interference,NV-RAM faulty

The rotor is decelerated with maximum braking.Check rotor in other centrifuge. If rotor is found faulty,

return to factory for repair. DO NOT REMOVE THE CODERING!

Separate motor cables and signal cables, otherwiseinterference is caused.

If the error persists, replace NV-RAM

Rotor NV-RAM

E-021Sensor cover

faulty,Interference

The rotor is coasting freely.Separate motor cables and signal cables, otherwise

interference is caused.

Replace sensor cover.

Sensor cover

E-022Sensor cover

faulty,Interference


interference is caused.Replace sensor cover.

Sensor cover

E-023Sensor cover

faulty,Interference


interference is caused.Replace sensor cover.

Sensor cover

E-025Latch failed,

Cable interrupted,Main board failed

Check operation of stepper motor when pressing lidbutton. Disconnect stepper motor from main board (X8)

and check resistance (12 = 46Ω, 34 = 46Ω). Ifstepper motor/cable is ok, replace main board.

Lid latch

E-027 Latch or wires

broken

Switch 2 is closed when switch 1 is open = implausible.Check micro switches and wires. Replace latch. If latch is

ok, replace main board.Lid latch

E-029

No rotor installed,Motor/rotor

blocked,Motor faulty,

No speed signal,Motor driver on

main board faulty

The rotor is coasting freely. CHECK FOR NO ROTATIONOF ROTOR THROUGH LID W INDOW BEFORE

OPENING THE LID!Check the motor/rotor for no blocks. Turn rotor by hand

and check for no abnormal noise and friction.Close lid and press start. Check through window if rotor

starts turning. If rotor turns, check cables of sensor cover and/or replace it.

If rotor does not turn, check winding resistance andinsulation resistance of motor. If motor is ok, replace main

board

Motor Main board

Sensor cover

E-030Mains voltage too

low,Main board failed

The rotor is coasting freely.Check mains power supply.

Replace Main boardMain board

E-031

Hot motor,no air circulation,faulty over temp.

cut-out.

The rotor is coasting freely.DO NOT TOUCH THE MOTOR, ROTOR AND/OR

ADJACENT PARTS! BURN HAZARD! Wait for motor tocool down. Check ventilation slots for cleanliness and

check fans for operation.Turn rotor by hand and check for no abnormal noise and

friction.Disconnect motor over temperature cut out from main

board (X11) and check it for continuity. Replace motor incase of malfunction.

Motor Fan


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2-10SERVICE



Possiblespare part

E-033

No ventilation,Pipes blocked,

Faulty over pressure switch

Refrigerated units only:The rotor is decelerated with maximum braking.

Check ventilation slots for cleanliness and check fans for operation.

Disconnect over pressure switch from main board (X18)and check it for continuity. Replace it in case of

malfunction. Check for blocks in the refrigeration pipes(trained and authorized refrigeration engineers only)

FanTEV

OP switch

E-034Brake resistor

open,main board faulty

The rotor is coasting freely.Disconnect brake resistor from main board (X20) andcheck resistance (120Ω). Replace if faulty, otherwise

replace main board.

Brakeresistor

Main board

E-036

Brake resistor open or short,

Motor windingshort,

Main board faulty

The rotor is coasting freely.Disconnect brake resistor from main board (X20) and

check resistance (120Ω). Replace brake resistor if faulty.Disconnect motor from main board (X10) and check

winding resistance. Replace motor if faulty.Otherwise replace main board

Brakeresistor

Main boardMotor


problem



Main board

E-040

Extremeimbalance,

motor bearings,motor phase

missing

The rotor is decelerated with maximum braking.Check for imbalanced load. Check motor for smooth

turning. Disconnect motor from main board (X10) andcheck winding resistance. Replace motor if faulty.

Otherwise replace main board.

Motor Main board

E-041 Imbalance sensor faulty

The rotor is decelerated with maximum braking.Replace sensor cover.

Sensor cover

E-045Power interruption

during run ANDspeed signal error

The rotor is coasting freely.During run a power outage happened. After power

recovery the rotor speed is 0. The rotor is turned at lowspeed and no speed signal is detected.

See “E-29”

Sensor cover

Main board

E-046

Emergency lidopening detected

during run,Faulty micro switch

The rotor is decelerated with maximum braking.CLOSE LID IMMEDIATELY!

NEVER OPEN THE LID WHILE THE ROTOR ISSPINNING. Wait for rotor to stop.

In case of faulty micro switches replace latch.

Lid latch

E-048to

E-052

Internal softwareproblem



Main board

E-053to

E-054

Internal softwareproblem

The rotor is decelerated with maximum braking.Wait for rotor to stop and turn the power switch off. Wait 5


Main board

E-060

Compressor control fault,

Temperature probe

fault


DO NOT TOUCH THE INSIDE OF CHAMBER ANDROTOR WITH BARE HANDS! FREEZE HAZARD!

Disconnect PT1000 from main board (X3) and check

resistance (R = 1,000Ω @ 0°C or 1,078Ω @ 20°C).Replace if faulty. Otherwise replace main board.

Main boardPT1000


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2-11SERVICE



Possiblespare part

E-072

Internal software

problem



Main board

E-074Latch motor

broken / blocked,Main board failed


seconds before turning it back on. Check the latch byopening and closing the lid. If faulty, replace lid latch.

Otherwise replace main board

Lid latchMain board


problem



Main board

E-078 Motor control fault



Main board

E-079 n > nrotor max +25The rotor is coasting freely.

The controller is not able to control the rotor speedproperly. Replace main board.

Main board


problem

The rotor is coasting freely.Wait for rotor to stop and turn the power switch off. Wait5 seconds before turning it back on. If the error persists,

replace main board.

Main board


problem

The rotor is coasting freely.Wait for rotor to stop and turn the power switch off. Wait5 seconds before turning it back on. If the error persists,

replace main board.

Main board

E-083

Brake resistor overheated,

No air circulation,Main board failed

The rotor is coasting freely.DO NOT TOUCH THE BRAKE RESISTOR! BURN

HAZARD!Check ventilation slots for cleanliness and check fans for

operation.Disconnect brake resistor from main board (X20) and

check resistance (120Ω). Replace brake resistor if faulty.Otherwise replace main board

Main boardBrake

resistor Fan

E-098 Imbalanced load

The rotor is decelerated with maximum braking.Wait for rotor to stop, open lid and check for imbalance,

greased trunnions, etc. Balance the rotor and start again.If the error persists check anti vibration mounts. Replace

mounts if worn or older than 3 years. If the error persistsreplace sensor cover.

AV mountsSensor cover

E-101to

E-104

Measurementshows great

deviations(+/- 5°C) to

expected values.


Disconnect PT1000 from main board (X3) and checkresistance

(R = 1,000Ω @ 0°C or 1,078Ω @ 20°C). ReplacePT1000 if faulty. Otherwise replace main board.

Check also for interference.

PT1000Main board


problem

The rotor is decelerated with maximum braking. Wait for rotor to stop and turn the power switch off. Wait 5

seconds before turning it back on. If the error persists,

replace main board.

Main board


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2-12SERVICE



Possiblespare part

E-106 Main board failed

The rotor is decelerated with maximum braking. Wait for rotor to stop and turn the power switch off. Wait 5


Main board

E-107 No air circulation,

Fan inoperative

The rotor is coasting freely. Wait for rotor to stop and turnthe power switch off. Wait 30 minutes to allow cooling

down before turning it back on. Clean ventilation slots.Remove dust from main board (unit disconnected from

mains!). Check fan (refrigerated units only). Replace fanif faulty. If the error persists replace main board.

FanMain board

.


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2-13SERVICE

Test Points

Test Point Unit Value Conditions

Mains inputX16

230V / 120V CAUTION! Mains potential!

Mains cable connected, power switch ON

Motor X10

A-B 5.6 Ω A-C 5.6 ΩB-C 5.6 Ω

Ambient at 20°C, plugs disconnected frommain board.

Any phase to ground must have an infiniteresistance.

Brake resistor X20

120 Ω Ambient at 20°C, cables disconnected from

main board

Over temperaturecut-out motor

X11

15 VDC0 VDC

Cables connected, power ON

Lid openLid closed

openshort

Cables disconnected, power OFFLid open

Lid closed

Over temperaturecut-out brake resistor

X9

15 VDC0 VDC

Cables connected, power ONFailureGood

openshort

Cables disconnected, power OFFFailureGood

Lid latch micro switches

X14

Pin 1+40 VDC

2.5 VDC

Cables connected, power ONLid closedLid open

Pin 1+4shortopen

Cables disconnected, power OFFLid closedLid open

Pin 2+3

5 VDC0 VDC

Cables connected, power ONStandby

Stepper motor moves into zero state after lid hasbeen opened

Pin 2+3openshort

Cables disconnected, power OFFStandby

Stepper motor moves into zero state after lid hasbeen opened

Pin 5+60 VDC

2.5 VDC

Cables connected, power ONLid closedLid open

Pin 5+6shortopen

Cables disconnected, power OFFLid closedLid open

Lid latch stepper motor X8

Pin 1-2 46 ΩPin 3-4 46 Ω

Ambient at 20°C, plug disconnected frommain board


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2-14SERVICE

Test Point Unit Value Conditions

DC bus voltageLED V41 DC BUS (red)

lit All cables connected, power switch ON,

lid closed

dimly lit All cables connected, power switch ON,

lid open

15 V control circuitpower supply

LED V79 (red)lit All cables connected, power switch ON

Speed signal

LED V11 RUN (green)

lit All cables connected, power switch ON, lid open,

rotor installed, rotor / motor is turned by hand.

The LED must light 2 times during 1 revolution.

flashing All cables connected, power switch ON, lid closed,rotor installed, start pressed, rotor spinning. The

LED flashes 2 times per revolution. At speedsabove 2000 rpm the LED is lit.

5 V control circuit power supply

LED V75 (green)lit All cables connected, power switch ON

24V control circuit power supply

LED V79 (green)lit All cables connected, power switch ON


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2-15SERVICE

System menu & Service menu

How to enter the system menu

The system menu allows the user to make advanced settings and read units values as additionalinformation for service calls.

To enter the system menu 1. Switch off the centrifuge2. Press and hold any button on the overlay3. Switch on the centrifuge

4. When Ent er SYSTEM Menu?

SYSTEM MENUappears, release the button

5. Press to enter the service menu

6. Use to scroll through the menu.

7. To exit the system menu and save changes press .

To exit the menu without saving the changes press .

See page 2-16 for complete menu structure.

How to enter the service menu

The service menu provides guidance for troubleshooting, such as error history list, statisticsand tests.

To enter the service menu 1. Switch off the centrifuge2. Press and hold buttons “Program 1” and “Program 2”

3. Switch on the centrifuge

4. When Ent er Ser vi ce Menu?

SERVI CE MENUappears, release “Program 1” and “Program 2”

5. Press to enter the service menu

6. Use to scroll through the menu.

See page 2-17 for complete menu structure.


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2-16SERVICE

System menu structure

Language: Engl i shSYSTEM MENU

End of r un beep? Yes

SYSTEM MENU

End of r un f l ash? Yes

SYSTEM MENU

Keypad beep? Yes

SYSTEM MENU

Beeper vol ume 3

SYSTEM MENU

Lcd power s af e? YesSYSTEM MENU

Aut o l i d open yes

SYSTEM MENU

Pr ogr ams onl y mode no

SYSTEM MENU

Sof t war e i d: xxxx Vxx

SYSTEM MENU

NVr am i d: xxxx Vxx

SYSTEM MENU

Cycl e count t ot al XXXXXXSYSTEM MENU

Use TIME UP andDOWN to select thedesired language.

Use TIME UP andDOWN to selectYES or NO

Use TIME UP andDOWN to selectYES or NO

Use TIME UP andDOWN to set the volumebetween 1 and 5

Software version

Software revision

NV-RAM version

NV-RAM revision

Total number of runs


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2-17SERVICE

Service menu structure

Cycl e count t ot al XXXXXX Cycl es r ot or XXXX: XXXXX

SERVI CE MENU SERVI CE MENU

Vi ew er r or l i st ? EXXX XXXX XXXXX XXXXX XX

SERVI CE MENU SERVI CE MENU

Uni t hour s XXXXXhXX

SERVI CE MENUVi ew devi ce st at s ? Dr i ve hour s XXXXXhXX

SERVI CE MENU SERVI CE MENULi d l ock cycl es XXXX

SERVI CE MENU

St ar t but t on t es t ?

SERVI CE MENU

St ar t di s pl ay t es t ?

SERVI CE MENU »»»»»»»»»»»»»»»»»»»»»»»»»»»»»»»»»»»»

Last 4 digitsof rotor code

Error number

Last 4 digitsof rotor code

Speed whenerror occurred

Set speed

Up countingnumber

2. All displayelements are lit

Total counter of lidopen / close cycles

MinutesHours

1. No displayelement is lit

Use TIME UPand DOWN toscroll throughlists

Use TIME UPand DOWN totoggle betweenscreens

Use SPEED UPand DOWN totoggle betweenscreens




Press START to start the test.Then press the buttons as they arerequested in the display. In case of malfunction (no entry is recognizedby the micro controller), the nextbutton will be requested to pressafter 30 seconds.

Number of runs with thistype of rotor

Total number of runs


24/62

2-18SERVICE

Imbalance Behavior

Install a rotor from the table below in unloaded condition (without adapter or other inserts)

Rotor Rotor name Run through

weight (grams)Cut off weight

(grams)

75005701 TX-150 Rotor 10 20

75005702 TX-150 Round Bucket 10 20

75005703 TX-150 Oval Bucket 10 20

75005704 TX-100S 10 20

75005635 TX-100 10 20

75005706 M-10 Rotor 10 30

75005637 MT-12 Rotor 4 12

75005600 HIGHConic Rotor 10 30

75003623 CLINIConic Rotor 10 30

75005719 MicroClick 30x2 Rotor 4 1275005715 MicroClick 24x2 Rotor 4 12

75003473 Hematocrit Rotor 1 capillary 6 capillary

75005643 PCR Strip Rotor 8x8 4 8

Insert rotor dependent cut-off weight in all buckets or Sample holders one after the other. Thecentrifuge must show an “Imbalance” message and stop.

Insert the run through weight in the same manner, the centrifuge must run through 4 times tomaximum rotor speed without giving an alarm.

Always use a weight which can be placed at the bottom of the bucket or sample holders (e.g.screw nuts and flat washers with cable tie)

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 user manual.

Electronic componentsClean dusty components carefully with a dry and soft brush and remove loose dust with avacuum cleaner.

Fans (refrigerated units only)Scratch 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 dust and dirt from the vent holes of the unit und clean the condenser (refrigeratedunits only) using a brush and vacuum cleaner.


25/62

2-19SERVICE

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 200mCaution!

Insulation resistance checkCheck also the insulation resistance between the poles of the mains plug and the grounding

conductor; the resistance value must be more than 2 M

Accessible current measured to IVD medical equipment regulationThe accessible current must not exceed 0.5 mAmps in single fault condition (interruptedprotection earth wire)!

1500±5%

500±1%

L (N)

N (L)

PE

10k±5%

0,022µF±5%

V AC

0,22µF±5%

Steckergehäuse / plug-in casing

Spezifaktionen für Meßgerät- TRMS, DC - 5kHz oder me hr

- Eingangswiderstand > 1M- Toleranz 5% oder besser - Crest Faktor 5 oder besser

Specifaction for the meter - TRMS, DC - 5kHz or more

- Input resistance > 1M

- Tolerance 5% or better - Crest Factor 5 or better

Körperstrom:accessible current:

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

U = 250mV I = 0,5mAmax m ax


26/62

3-1FUNCTIONAL DESCRIPTION

FUNCTIONAL DESCRIPTION

Block Functions 3-2

Main Board Functions 3-3

Power Pack 3-4

Intermediate Circuit 3-4

Brake Path 3-4

Frequency Converter 3-4

Micro Controller 3-4

Display 3-5

Speed Detection, Rotor Recognition, Imbalance Detection 3-5

Lid Lock System 3-5


27/62


Block functions

The Megafuge 8 / ST8 / SL8 is a non-refrigerated laboratory tabletop centrifuge with microprocessor control, noise reduced induction drive motor and automatic rotor, speed and imbalance detection.

The unit is equipped with following boards and components:

Instrument socket with inlet filter for mains cable

Two poles mains switch with integrated thermal over-current release (230V: 5A, 120V: 10A)

Harmonic choke (230V units only)

Main board with microprocessor part and power electronics

Backlit liquid crystal display

Overlay keypad

Motor cover with sensor board incl. speed, rotor and imbalance detection

3 phase induction motor with integrated thermal over temp. cut out (C. O. 150°C)

Lid lock with motorized opening and emergency release

Brake resistor with over temp cut out

3~ MOTOR

LID LOCK

MAIN BOARD

KEYPAD

DISPLAY

REAR PANEL

OVER TEMPERATUREBRAKE RESISTOR

CHOKE (only 230V)

BRAKE RESISTOR


28/62


Main Board Functions

The Main board is mounted on an aluminum swivel chassis in the front of the centrifuge behind thefront panel. The components on the main board are arranged in following function blocks:

Noise filter and power pack for DC intermediate circuit with line voltage configuration (1)

Power pack for low voltage supply of microprocessor part (2)

Frequency inverter equipped with automatic loading (3) and voltage (brake) controllingcircuits (4)

Microprocessor part with CPU and NV RAM (5)

Lid lock control circuit with driving component for lid latch stepper motor (6)

Speed, imbalance and rotor detection circuit (7)

Display and keypad control circuit (8)

Buzzer circuit (9)

Exchangeable NV-Ram containing specific data of the unit (NV)

Additional circuits for refrigerated models.

1

2

3

5

6

7

8

9

4

NV


29/62


Power Pack

The power pack consists of 1 transformer, 2 rectifiers (single diode) and 2 voltage regulators. Itgenerates the following low voltage levels:

5V VCC: By switched-mode regulator A8499Supplies all processors and its electronic components on main board, keypadand display. The reference potential is GND.

24V: UnregulatedDrives the lid lock stepper motor and the buzzer, supplies the LCD and therelays K1, K2, K3 and K4.The reference potential is GND.

15V: By voltage regulator LM317For protection circuit. CAUTION: The reference potential is U-.

Intermediate Circuit

The DC intermediate circuit serves as an energy store between the AC power input and thetransmitted motor performance. The intermediate circuit consists of a line voltage selection switch, aheat-sink-cooled bridge rectifier and two reservoir capacitors which are charged whenever thecentrifuge lid is closed (K1 activated). The presence of the DC voltage is indicated by LED V41.When switching the unit off, the DC voltage of the intermediate circuit is discharged across a path of resistors.

Brake Path

Electrical power is fed back into the intermediate circuit during motor deceleration (motor acts asgenerator). This braking power is transformed into heat by the connected resistor so that theintermediate circuit voltage does not rise to an excessive level. The brake resistor is switched into theintermediate circuit by a fast switching transistor (pulse-width modulation, synchronised by the doublemains frequency). This transistor is voltage dependent controlled by a self-acting stage (closed loop).

Frequency inverter

The 3-phased motor is provided with chopped direct voltage blocks (chopped frequency approx.5kHz, amplitude is height of DC intermediate voltage). These blocks are variable in frequency andpulse-width modulation, 120° de-phased. 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 willbe affected). The frequency inverter is protected against over current, over temperature and over-voltage.

Microcontroller (Central Processing Unit) Part

The controller block includes the central processor unit (CPU) LPC1764 programmed with software tocontrol the centrifuge and a data storage (NV-RAM). Current versions and revisions of software anddata can be seen in the system menu.Software is loaded into the LPC1764 via a serial interface on the main board X6 and cannot beupgraded in the field. The NV-RAM data can be updated by replacing the entire NV-RAM with one of the latest revision.

NV-RAM data includes rotor parameters, such as max speed and g-force, acceleration anddeceleration profiles and imbalance behaviour.


30/62


Display

The LCD is attached to the front panel. The connection to the main board is done by a RJ45 cable.Data transfer as well the low voltage supply of 5V is verified. The operating keys are managed by an

own connection.

Speed, imbalance and rotor detection

The motor cover contains the detection circuits for speed, rotor and imbalance. The LED V11 on themain board indicates the function of the speed and rotor detection. A measurement of the signal isnot possible.

Rotor detection

4 magnets mounted on each rotors bottom are detected by aHall Effect sensor in the motor cover. The magnets are

alternately arranged in polarity on a ring around the rotorscentre. The gap between 2 magnets varies with different rotor types, but is at least 20°.The magnets are switching a flip-flop stage by which differentpulse lengths and pulse intermissions are generated during onerotor rotation. By this signal the CPU is able to detect up to 65different rotors and the correct direction of rotation, too. After the rotor has been recognized this signal is used for theredundant speed measurement.

Speed detection

A Hall Effect sensor in the rotor cover counts the passing by

magnets. As the 4 magnets are arranged alternating in polarity,2 north and 2 south poles make one revolution.For safety reasons the speed detection circuit is redundant andthe rotor detection circuit is used to detect the speed, too, after the rotor has been recognized.

Imbalance detection

After the rotor has been recognized, the depending vibrationcurve is loaded from the NV-RAM. If vibration, which is detectedby an accelerometer in the motor cover, exceeds this curve, animbalance alarm is triggered by the CPU.

Lid lock system

The lid is closed by pressing the hook into the latch. Two micro switches monitor the correct positionof the hook and the emergency opening during the run. An alarm is triggered if one of these two microswitches opens, while the rotor is spinning.The latch is unlocked by a bi-directional stepper motor controlled by a stepper motor driver on themain board. A micro switch is used for the 0-position finding after each opening and at power on.For additional safety the motor driver is de-activated by a relay when the speed is above 120rpm.

0

2

4

0 2000 4000 6000

V i b r a t i o n

rpm


31/62

4-1ELECTRICAL DIAGRAMS

ELECTRICAL DIAGRAMS

Overview 4-2

Power Supply 1 4-3

Power Supply 2 4-4

Frequency Inverter 4-5

Protection Circuit 4-6

Controller 4-7

Imbalance RPM 4-8

Key Control 4-9

Discharge your body before touching electronic components!


32/62

4-2ELECTRICAL DIAGRAMS

3~ MOTOR

LID LOCK

DISPLAY

REAR PANEL

OVER TEMPERATUREBRAKE RESISTOR

CHOKE (only 230V)

BRAKE RESISTOR

KEYPAD

MAIN BOARD


33/62

Z1M4 mounting

1

D29SN74AHC1G14

2 4

5

3

R169

4K7

V36GBPC1508W

~

~

+ -

R162

100R

C92

1200uF250V

+

K3A

P C J - 1 0 5 D 3 M 1

4

C9710uF6,3V

R176

22k

R165

10K

K2B

PCJ-105D3M

3

2

R1741k

V44ES1D

R175100k

C9610nF50V

D9ALM393

3

21

8

4

-

+

V42BAS16

R154

10k

X9

OT Brake Resistor

12

R14633k

C871uF X2275 VAC

R171

4k7

X17Lumberg K37

123

C91

100nF

500V

R157

75K

C93

47µF

25V

+

R155470K

D28LTV-357T

V38

BC817-25

R172

22k

Z3

M4 mounting

1

R145

75K

R2460R

V47BZX84C5V1

R153150K

K5B40.61.7.024.0000

4

5

DC+DC-

K1A62.22.9.024.0300

A

B

DC+DC-

R27247R

R270

47R

K2A

P C J - 1 0 5 D 3 M 1

4

DC+

DC-

K1B

62.22.9.024.0300

9

4

6

7

SW2Netz 2pol

1

2

3

4

5

6

R149

10kC901uF450V

+

TP16

R163

V275LA10P

U

R16410k

V48BC817-25

K3B

PCJ-105D3M

3

2

R292

10K

R14733k

TP17

X18Lumberg K15

12

V46

BC817-25

R161

4k7

R15133k

L152x7.3mH9.3A

1

3 4

2

R170

2K2

V51BZX84C5V1

R160

75K

V39

BAS16

V49BAS16

R15833k

C942nF2 - Y2250VAC

V35

US1JC862nF2 - Y2N.M.

R150470K

V41LED red

R144

V275LA40A

U

R177

22k

R14320R

V40TL431A

C882nF2 - Y2N.M.

V43

BC817-25

R152150K

X19Lumberg K09

12

V37

BAS16

R148

75K

K5A

40.61.7.024.0000

3

7 1 8

6

2

C95100nF50V

D30LTV-357T

C152nF2 - Y2250VAC

Z6

M4 mounting

1

TP19

K4B

4 0 . 6

1 . 7 . 0

2 4 . 0

0 0 0

4

5

DC+DC-

R178

1M

V45BAS16

V50

BC817-25

K4A

40.61.7.024.0000

3

7

1

8

6

2

R159

12k

R15633k

R271

47R

R173

22k

K6BPCJ-105D3M

3

2

TP18

C891200uF

250V

+

X16

Lumberg K46

12

Z4M4 mounting

1

D9BLM393

5

67

8

4

-

+

R166

4k7

C14

220nF250Vac

N26114356

N 2 6 1 1 4 3 2 9

N26119048

Z1

Z1

GNDGND

VCC

GND

Masse

Masse

Masse

VCC

GND

+24V

GND

+24V

GND

GND

GND

VR

VR

+24V

GND

Conductor status

REL_ON_Buff

/overpressure

U+

U-

NK1

NK2

+24V

GND

link discharge

VCC

compressor

fan1

fan1 high speed

high to C90 > 200V

overpressure switch

compressor

Mains input -

Steady state condition

t o P r o t e c t i o n C i r c u i t - p a g e 4 - 6

N

to supply 2 section

page 4-4

SELVZK

to controller sectionpage 4-7

Max Power = 500W

Imax@230Vac=3Arms(max)

Imax@120Vac=6Arms(max)

condensor fan

Mains Input

DC+

DC-

ELECTRICAL DIAGRAMS 4-3

Power Supply 1


34/62

C129

680u35V

+

TP11

C110100nF50V

R2211K2

R24110K5

R2285K1

V65

SS34

C12247uF35V

+

L17

[email protected]

R25056R (N.M.)

C137100uF400V

+

TP14

C13022uF50V

+

V61US1J

V76

1N5362B5W

R227

2M0,25W

V79

LED Green

L18

[email protected]

R2314K7

R247

0R

R222

249

R2294R7

C12710nF50V

V58

P 6

S M B 2 0 0 A

D39

TOP255YN

C O N T R O L

3

SOURCE4 DRAIN

7

V - M o n i t o r

1

I - E x t e r n a l

2

F r e q u e n c y

5

V63BZX84C30

Z2

M4 mounting

1

R249(N.M.)

R217PTC 6R C840

R23436K5

V60

ES3D

R2361K5

C152

(N.M.)

R2374K75

[email protected]

TP12

R2191K2

C131

100nF50V

R2181K2

V64

ES1D R244

0R

C150

470nF(N.M.)

C132

100uF50V

+

R2232K87

C124100nF50V

C134100nF50V

C120

100nF50V

R230

33R

R2393K16

C119

100nF50V

C128470pF200V

R2201K2

C125

330µF

35V

+

C121

100uF50V

+

V62

ES3D

V78LED red

R2251K2

R300

3K9

R2406R8

R301

5K6

TP15

C133

33nF

C140100nF

R2241K2

R233475R

C1233n3250VacY1-Type

TP13

R235

10K

D40LTV-357T

V75LED Green

R232

10K

R245

0R

C136100nF500V

D38 A8499

Boot1

ENB2

TSET3

GND4

FB 5

LX 7

Vin 8

VBIAS 6

P A D

9

C13847uF35V

+

D37

LM317

VI3

A D J

1

VO 2

R23830K

V59

N . M .

R2991K

MV2

N . M .

R226

2M0,25W

C141

100nF

R242

0R

C126

68pF500V

R243

0R

T1TRAF_B66208W

3

4

2

9

10

1

5

6

7

V66TL431A

V57GBU404

~

~

+-

C135

470uF

10V

+

V771N5362B

5W

N15468022

GND

VR

GND

GND

NK1

GND

NK2

+24V

VCC

U-

+15Vprim

ZK

N

SELV

Pmax(tot) = 18W

Iout = 0.12A

Iout = 0.5A

Iout = 0.5A

Iout = 0.05A


Power Supply 2


35/62

R66

6K8

R86470R

D45PS21964-AT

VP18

VP6

VN11

WP7

UN10

VNC16

WN12

FO14

C I N

1 5

VNC9

VN113

P 24

U 23

V 22

W 21

N 20

UP5

VUFB2

VVFB3

VWFB4

R56330R

R69

6K8

R5510R

C58

100nF

M54snap-rivet

D22

ACPL-P480

1

3 4

5

6

2

R87

150K

D23

ACPL-P480

1

3 4

5

6

2

C53

100nF

X10B-1

R73330R

C39100nF

R880R0332W

R67

6K8

C43100nF

M55snap-rivet

R79330R

R75

330R

R5810R

R59330R

V8BC807-25

C591nF50VCER

R65

6K8

R76

330R

R85

4K7

D21

ACPL-P480

1

3 4

5

6

2

C51

100nF

R64330R

C56100pF

R821M

X11

OT Motor Switch12

R70

6K8

R61

4K7

L51K 100MHz

8 12345

67

R80

4K7

R71

4K7D41

74HCT365

I12

I24

I36

I410

I512

I614

DA1

DB15

O1 3

O2 5

O3 7

O4 9

O5 11

O6 13

V

c c

1 6

G N D

8

D15

ACPL-P480

1

3 4

5

6

2

C42100nF50V

R52

4K7

R841M

X10A-1

D16

MURS160T3

R57

4K7

C47100nF

R50330R

R60

330R

X10D-1

R68

6K8

C57100pF

DZ21SMA5934BT324V

C50100pF

C44100nF

C3610uF

35V

+

X10C-1

R5310R

C33100nF50V

R77

330R

D20

MURS160T3

Z5M4 mounting

1

C3510uF

35V

+

R62

330R

R74

4K7

DZ3

1SMA5934BT3

24V

C48100pF

C55

100pF

R811M

C38100nF

C32

100uF50V

+

R63

330R

R83

10K

C54

100nF

C4510uF

35V

+

C40

0.22µF

630Vdcpolyprop.

C49100pF

D19

ACPL-P480

1

3 4

5

6

2

R89

4K7

D25 ACPL-M50L

D24

ACPL-P480

1

3 4

5

6

2

C34100nF

R72

4K7

D18

MURS160T3

C46100nF

DZ4

1SMA5934BT3

24V

DZ11SMA5934BT3

24V

GND

GND

GND

GND

GND

GND

GND

GND

VCC

GND

+15V

+15V

GND

+15V-W

VCC

U+

+15V

motor temperature sensor

+15Vprim

/Enable Gate

PWM-UP

PWM-VPPWM-WP

PWM-VNPWM-WN

PWM-UN

U-

/inverter fault

(contact to frame (earth))

accessible !

X10C =black

X10B =brown

X10A = blue

SELV ZK

X10D =

motor case


Frequency Inverter


36/62

D33LTV-357T

D7ALM393

3

21

8

4

-

+

R1794R7

R1881M

R19410K

C1011uF10V

C105

100nF

50V

C9910nF50V

R201750k

V56

BAT54

V54TL431AR195

10K

R205

2M2

R2024K7

R189470K

TP24

R180470K

C10422pF50V

R20610K

D49SN74AHC1G08

A1

B2

G N D

3

out 4 V

c c

5

D7BLM393

5

67

8

4

-

+

R1811K

R1986K8

R182470K

X20Brake Resistor

1

2

R1831K

C10010uF

35V

+ R192

680R

D6BMC33072ADG

5

67

+

-

D34LTV-357T

C1031uF10V

TP25

R1854K7

D6AMC33072ADG

3

21

8

4

+

-

R200

10K

R190220R

R212

10K

C9810nF50V D32

LTV-357T

R20918k

R184470K

R1975K6R196

68KC10210uF6,3V

C107100nF50V

V55TL431A

C148100nF50V

C106100nF50V

V53SPP20N60C3

V52

US1J

R207750k

R2044K7

GNDGND

GND

GND

VCC

GND

GND

VCC

GND

motor temperature sensor

+15V

/overvoltage

VCC

U-

U+

overtemperature motor

+15Vprim

link discharge

power low

U+

forward breakover voltage 378V - 392V

ZK

420V (Typ)

up 210V down 205V

SELV


Protection Circuit


37/62

R8

3K3

R54K7

R364K7

C1711uF50V

+

C1100nF

50V

R1610K

L2

1K@100MHz

C26100nF

50V

R3134K7

TP29

R18

1R

R265100R

D2C74HCT14

5 6

1 4

7

V67 AO3414

C17210nF50V

D11

LPC1764FBD100

V B A T

1 9

V S S 1

3 1

P3.2626

XTAL2 23

V D D 3 . 3_

1

2 8

RTCX218

RTCX116

V R E F N

1 5

P1.31 20

XTAL1 22

P1.24 38

V S S 2

4 1

V R E F P

1 2

V S S A

1 1

V D D A

1 0

P2.11 52

P1.27 43

V D D 3 . 3_

r e g_

1

4 2

P2.10 53

V D D 3 . 3_

2

5 4

V S S 3

5 5

V D D 3 . 3_

3

7 1

V S S 4

7 2

P2.2 73

V S S 5

8 3

V D D 3 . 3_

r e g_

2

8 4

P4.2985

V D D 3 . 3_

4

9 6

V S S 6

9 7

P2.12 51

P2.13 50

P1.20 34

P0.257

P0.266

P1.30 21

P1.0 95

P1.1 94

P1.4 93

P1.8 92

P1.9 91

P1.10 90

P1.14 89

P1.15 88

P1.16 87

P1.17 86

P1.18 32

P1.21 35

P1.23 37

P3.2527

P4.2882

N.C.13

P1.26 40

P1.28 44

P1.29 45

P0.2157

P0.2256

P0.17

61

P0.1959

P0.1663

P0.1860

P0.2058

P0.2725

P0.2929

P0.2824

P0.3030

P0.1048

P0.580

P0.778

P0.481

P0.1562

P0.877

P0.0_SDA146

P0.298

P0.679

P0.1149

P0.1_SCL147

P0.399

P0.976

P1.19

33

P1.22 36

P1.25 39

JTAG_TCK5

JTAG_TMS3

JTAG_TDO1

JTAG_TDI2

JTAG_RTCK100

\JTAG_TRST4

\RSTOUT 14

P2.1 74

P2.0 75

\RESET 17

P0.239

P0.248

P2.6 67P2.5 68P2.4 69

P2.9 64

P2.3 70

P2.8 65P2.7 66

@40MHz

R1510K

C24100nF50V

R25910K

X7LCD Interface

11

22

33

44

55

66

77

88

s h i e l d 0

9 A

s h i e l d 1

9 B

R24100K

V5BC807-25

L31K 100MHz

81234 5

67

C5100nF50V

C23100nF50V

D47D74HCT14

9 8

1 4

7

C101nF50V

D1A74HC14

1 2

1 4

7

R312

4K7

D48F74HCT14

13 12

1 4

7

R3214K7

R26833R

SW1N.M.

C12100nF

50V

R25810K

D42SN74AHC1G08

A1

B2

G N D

3

out 4 V

c c

5

R3510K

C19

10nF

D48B74HCT14

3 4

1 4

7

TP27

R263

10K

R44

22K

D48E74HCT14

11 10

1 4

7

R32222K

CX14x470pF GND

R2691K

D2A74HCT14

1 2

1 4

7

D47C74HCT14

5 6

1 4

7

JP3JUMPER

12

C25100nF50V

D2F74HCT14

13 12

1 4

7

X6Serial Interface

13579

2468

10

+++++++++

+

C8100nF50V

R19

10K

V68BC817-25

R46 100R

V69BC817-25

R42

33K

C2210uF6,3V

C27100nF

50V

V6

BC807-25

D12

E01

E12

E23

VSS4

SDA 5SCL 6

/WC 7

VCC 8

H2AIR Socket

R264100R

X4

13579

2468

1011121314151617181920

+++++

+++++++

++

+ +++

++

R47 100R

R3

4K7

D10LP3985 3.3V

Vin1

Vout 5

G N D

2

Ven3

Byp 4

R37

47K

R3154K7

D4SN74AHCT1G00D

1

24

5

3

R43

33K

X21

Debug Interface

11

22 33 44

C11100nF

50V

C144100nF50V

C16100nF

50V

C29100nF50V

R44K7

JP1JUMPER

12

C7100nF50V

D3E74HC14

11 10

1 4

7

D1B74HC14

3 4

1 4

7

D47F74HCT14

13 12

1 4

7

J112.0 MHz

D12A8-pin Socket

V9MCP9701A

V D D

1

out2

G N D

3R2533K3

C147100nF50V

C21100nF50V

C28100nF

50V

V70

BAT54

V71

BAT54

X32,5mm

2 21 1

C13100nF

50V

C149100nF50V

V7

BC817-25

C6100nF50V

D47E74HCT14

11 10

1 4

7

R63K3

D48C74HCT14

5 6

1 4

7

R2520R

C1722pF50V

D2B74HCT14

3 4

1 4

7

D1E74HC14

1110

1 4

7

R3144K7

R10

1R

D1C74HC14

56

1 4

7

R2847R

R2710K

D1F74HC14

13 12

1 4

7

D13MCP1319MT-29

Vcc5

RESET 1

G N D

2

RESET 3

MR4

D48D74HCT14

9 8

1 4

7

C143

100nF

50V

C1822pF50V

C410nF50V

R14

1K0,1%

C2100nF50V

D14ST3232C

V+ 2

C1+ 1

C1- 3

C2+4

C2-5

V-6

Dout2 7

Rin2 8Rout29

Din210

Din111

Rout112 Rin1 13Dout1 14

1 5

V c c

1 6

R2610K

C3

10uF

10V

C91nF50V

R23

4K7

D1D74HC14

9 8

1 4

7

D48A74HCT14

1 2

1 4

7

R2510K

L6

1K@100MHz

C3110uF6,3V

R45 100R

H2

940nmTSAL7200

R73K3

+LED

RTCKTDO/SWOTDITMS/SWDIOTRST_NTCK/SWDCLK

TRST_NTDI

TMS/SWDIO

RTCKTDO/SWO

TCK/SWDCLK

VSSA

VDDA

/RST

/RST

VSSA

PT1000_ON

/RST

compressor_CMD

compressor_CMD

REL_ON

Display On-Off

Display On-Off

Fault

Fault

/fan1

/fan1

Reset 5V

_MR

_MR

TXD0RXD0

TXD0RXD0

VDDA

PT1000_ON

RXDTXD

SCLK

MOSI/CS1

SCLK

MOSI

/CS1

/fan1 high speed

/fan1 high speed

REL_ON

FAN

+3.3VVCC

GND

GND

GND

GND

GNDGND

VCC

GND

GND

+24V

GND GND

GND

VCC

GND GNDGND

GND

+3.3V

GND

+3.3V

GND

GND

GND GND

GND

+3.3V

GND

+3.3V

+3.3V

GND

VCC

GND

GND

GND

+3.3V

GND

GND

GND GND

GND

+3.3V

GNDGND

+3.3V

GND

VCC

+3.3V

GND

VCC

GND

VCC

GND

GND

VCC

GND

VCC

GND

+3.3V

+3.3V

VCC

/overpressure

fan1

compressor

GND

rpm

+24V

Rotordetection

P2.5P2.6P2.7P2.8

/overvoltage

/Inverter fault

Reset 5V

overtemperature motor

power low

+3.3V

Conductor status

PWM-WPPWM-WN

PWM-VP

PWM-UP

PWM-UN

PWM-VN

imbalance

/Steps

lid lock closed

Stepper Motor Reset

/Enable Gate

P0.9P0.8P0.7

P0.20P0.21

REL_ON_Buff

fan1 high speed

/EN

Fault-SM

/DIR

/LID CURR

/REL_SM

lid closed PWM-FAN

PWM-Buzzer

/Curr-reduc

Pinning RJ45 Buchse: Pin1 LED1+24V Pin2 +5V

Pin3 SCLK

Pin4 GND Pin5 MTSR Pin6 GND Pin7 CS1

Pin8 GND Shield GND

M24C128WBN6

SELV

NM


Controller


38/62

V80BC807-25

C114100nF

L23300R@100MHz

C781nF50V

R92220K

V81BC817-25

D43A74HCT14

1 2

1 4

7

R304

100k

V12BC817-25

Lid Switch12

R293

4K7

V1

BAT46W

R309

4K7

D43B74HCT14

3 4

1 4

7

C111

10nF50V

SH1

C661nF50V

R24833K

R305

100k

V10BAS16

13

R951K

X8

JST stehend

11

22

33

44

V13

BC817-25

R310

4K7

C71100nF

50V

R117

4K7

D2E74HCT14

11 10

1 4

7

R2914K7

R306

100k

C161220nF

R1021K

D43E74HCT14

11 10

1 4

7

D26SN74AHCT1G00D

1

24

5

3

C60100nF50V

R282

1R1W

R31110k

R118

4K7

C75

5n6F50V

R280

100K

R1011K2

R295

0R51W

Lid Lock Switch12

R281

1R1W

D2D74HCT14

9 8

1 4

7

D5A74HC4538

RC2

CX1

+T4

-T5

R

3

Q 6

Q 7

V D D

1 6

V s s

8

C791nF50V

L111K 100MHz

81234 5

67

R285

33K2

D43C74HCT14

5 6

1 4

7

V18BAS16

V22BAS16

C1731nF50V

R298

270K

L41K 100MHz

8 12345

67 C112

820pF

R30215K

R119

4K7

R26610k

R106

1K

V21

FDN304P

C76

100nF50V

R2831K8

R107

100R

R2841K8

R11

4K7

R12110K

K6A P C J - 1 0 5 D 3 M

DC+DC-

R289100K

D43F74HCT14

13 12

1 4

7

TP67

R99

4K7

R93

1M

D46

SN74AHCT1G08

A1

B2

G N D

3

out 4 V

c c

5

L121K 100MHz

8 1

2345

67

V20

BC817-25

R120

4K7

R286

33K2

R96100k

C167220nF

R2964K7

L71K 100MHz

81234 5

67

X14JST stehend

123456

R29727K

R108

15K

C72100nF50V

C160 220nF

C6810uF6,3V

L20300R@100MHz

C63100nF

R294

4k7

R287

100K

D8SN74AHCT1G08

A1

B2

G N D

3

out 4 V

c c

5

R91NM

R279100K

C67100nF50V

C15910nF50V

C164820pF

D43D74HCT14

98

1 4

7

C170

100nF

50V

R1164K7

K7A

P C J - 1 0 5 D 3 M

1

4

DC+

DC-

C741nF

50V

L21300R@100MHz

R111

4K7

R1031K8

L8100mH

C77

100uF50V

+

C146

100nF

R30810k

V11LED Green

R9033K

C166

220nF

D35INA193

OUT1

GND2

Vin+3 Vin- 4

V+ 5

X13JST stehend

1 1

2 2

3 3

D52BLM393

5

67

8

4

-

+

R110

15K

D52ALM393

3

21

8

4

-

+

C731nF50V

C168100nF

Stepper motor reset12

C169

100nF

50V

R26133K

C113820pF

L10100mH

R30710k

R104

1K8

V15

BAT46W

R105

100k

K7BPCJ-105D3M

3

2

R9810K

C651uF10V

D31SN74AHCT1G08

A1

B2

G N D

3

out 4 V

c c

5

TP68

R2514K7

R97

1K

D51

L6228D

OUT2A 21

G N D

1 8

G N D

1 9

OUT1B 8

OUT2B 16

V S B

1 7

V S A

2 0

V C P

2 2

G N D

7

V B O O T

1 5

G N D

6

CLOCK1

CW/CCW2

CONTROL13

H/F12

EN14

RESET23

V R E F A

2 4

V R E F B

1 1

R C A

4

R C B

9

S E N S E A

3

S E N S E B

1 0

OUT1A 5

R303

100k

L22300R@100MHz

R941K R100

3K6

C6110nF

50V

R109

4K7

C165

820pF

D5B74HC4538

RC14

CX15

+T12

-T11

R

1 3

Q 10

Q 9

X12JST stehend

1 1

2 2

3 3

4 4

C641uF10V

N5468836

N5468902

N5469480

REL_SM

/Reset 5V

/LID-CURR

REL_SM

/Reset 5V

/LID-CURR

GNDGND

VCC

GNDGND

GND

GND

GNDGND

GND

GND

GND

GND

GND

GND

GND

GND

GND

GND

GND

VCC

GND

VCC

GND

GND GND GND

GND_1GND

VCC

VCC

VCC

GND

GND

VCC

VCC

VCC

GND

GND

GND

GND

VCC

VCC

GND

GND

GNDGND

GNDGND

GND_1

VCC

GND

GND

VCC

GND

GND

VCC

VCC

rpm

VCC

GND

Reset 5V

lid lock closed

Rotordetection

lid closed

+24V

/DIR

/Steps

/EN

Fault-SM

/LID CURR

/REL_SM

Stepper Motor Reset

imbalance

/Curr-reduc

SPEED 2

SPEED +

UNBALANCE

SELV

F = 150-800Hz 0V

3.3V

One step ON

each falling edge

Low = No Fault

Low = drive enabled

Low = Motor current ON

Low = Relay closed


Imbalance RPM


39/62

V3

STD12NF06L

R134

100kR1351K

V29 BAT54

13

V2BC817-25

V34BC807-25

X15connecting plug cod

1 3 5 7 9

2 4 6 8 1 0

1 1

1 2

1 3

1 4

+ + + + +

+ + + + + + +

+ +

D3F74HC14

13 12

1 4

7

R128

4K7

R142330R

R139330R

R1210K

V24 BAT54

13

C851nF50V

C81100nF50V

R3204K7

R126

27RV31BC807-25

R122 1K

C52

1uF50V

+

C145

100uF50V

+

V28 BAT54

13

R2110K

R3164K7

R124 1K

L13 1K 100MHz

81234 5

67

R1381K

R3194K7

C831nF50V

R127

4K7

R20

10K

R29

47K

V33BC807-25

R1304K7

D3D74HC14

98

1 4

7

L1

200R 300MHz

4 123

R1411K

C821nF50V

V27 BAT54

13

V25 BAT54

13

C70100nF

50V

V16

BAS16

C41100nF

50V

R140

100k

R133330R

D47B74HCT14

3 4

1 4

7

R13

75K

D3B74HC14

34

1 4

7

D3C74HC14

56

1 4

7

H1SMA-17

+

-

R17

1K

C841nF50V

R131

100k

D3A74HC14

12

1 4

7

R136330R

R221K

R317

4K7

R301K

V30 BAT54

13

R125

4K7

V23 BAT54

13

R1231K

V32BC807-25 R1

100K

L14 1K 100MHz

81234 5

67

C151

100nF50V

D2774HCT138

A1

B2

C3

G16

G2A4

G2B5

Y0 15

Y1 14

Y2 13

Y3 12

Y4 11

Y5 10

Y6 9

Y7 7

R3184K7

R129

27R

V26 BAT54

13

D17BMC33072ADG

5

67

+

-

C37100nF

50V

X12mm

22 11

D47A

74HCT14

1 2

1 4

7

D17AMC33072ADG

3

21

8

4

+

-

C80100nF50V

V4

MMSZ5242B12V-0.5W

R1321K

R137

100k

LEDblock2

LEDblock1

GND

VCC

GNDGND

GND

VCC

GND

VCC

GND

VCC

GND

VCC

VCC

GND

VCC

GND

GND

VCC

GND

+24V

GND

GND

GND

+24V

+3.3V

+3.3V

+3.3V

GND

VCC

P0.7P0.8P0.9

P0.20

P0.21

P2.5

P2.6

P2.7

P2.8

Reset 5V

PWM-FAN

PWM-Buzzer

FAN

(Fpwm = 4KHz - PWM

100% high = FAN OFF)

0V

5V

(Fpwm = 4KHz -PWM 100% low = Buzzer OFF)

0V

3.3V


Key Control


40/62

5-1DISASSEMBLY OF INSTRUMENT PARTS

DISASSMBLY OF INSTRUMENT PARTS

Disassembly of Mechanical Parts 5-2

Front Panel 5-2

Back Panel 5-2

Gas Lid Stay 5-2

Lid 5-2

Gasket 5-2

Bowl 5-3

Casing 5-3

Replacement of Electrical Components 5-4NV-RAM on the Main Board 5-4

Main Board 5-4

Lid Latch 5-4

LCD 5-5

Keypad 5-5

Sensor Cover with Speed, Imbalance and Rotor Detection 5-5

Brake resistor with Over Temp Cut Out 5-5

Replacement of Drive Components 5-6

Drive Motor 5-6

Anti Vibration Mounts 5-6



Removal of Stuck Rotors 5-8

Checking the AutoLock 5-8

Before disassembling any parts, switch off the unit and pull out the mains

plug.


41/62


Disassembly of mechanical parts

Front Panel

Open the lid, switch off the unit and pull out the mains plugRemove the 2 screws on top of the front panelPull the front panel up and lift it off.Disconnect wiring from display and overlay adaptor board

Back panel

Switch off the unit and pull out the mains plug.

Remove the 7 screws attaching the back panel to the casing.Tilt the panel down and unplug the cables.

Gas lid stay

Open the lidRemove the cotter pin from the joint block with help of a striker pin and a hammer.Unscrew the gas lid stay from its bottom holder counter

clockwise.Take out the gas lid stay to the top.

Lid

Open the lid, switch off the unit and pull out the mains plugRemove gas lid stay from top joint blockRemove the 4 screws attaching the lid hinges to the main

frame.When reassembling the lid take care that the lid bolt fits thecasing hole centric.

The lid hook must be adjusted to a visible length of 42mm.

42mm


42/62


Gasket

Remove the 3 screws hidden by the gasket that are attachingthe inner bowl and the gasket to the outer casing.

Slightly lift the bowl together with the gasket and take thegasket of the bowl.

Bowl

Remove the AutoLock head from the motor.Remove the sensor cover.Remove the 3 screws hidden by the gasket that are attachingthe bowl to the outer casing.Lift the bowl out to the top.

Casing

Remove the front panel.Remove the back panel.Remove the main board.Remove the AutoLock head and the sensor cover.Remove the bowl.Remove the 4 screws attaching the casing to the bottom plate.Lift the casing off.


43/62


Replacement of electrical components

NV-RAM on the main board

Before replacing the NV-RAM enter the system menu and notethe version and revision number.Remove the front panel.Remove the 4 screws at the swivel cassis and flip down themain board. ATTENTION - Discharge your body before handlingCMOS components!Use a chip removal tool or a small screwdriver to pull the NV-RAM out of its socket. After reassembly check the version and revision number of thenew NV-RAM in the system menu.

Main board

Remove the front panel.Remove the 4 screws at the swivel cassis and flip down themain board.Disconnect all plugs and cables.Remove the 2 screws attaching the swivel chassis to thecasing. ATTENTION - Discharge your body before handling

CMOS components!Remove the NV-RAM and place it on the new main board –new main boards are delivered without or with an emptyNV-RAM. ATTENTION - When installing a new main board, make surethat the voltage selection switch is set to the correct voltage!

Lid latch

Remove the front panel.Remove the 4 screws at the swivel cassis and flip down themain board.Disconnect the micro switches and the stepper motor from themain board (X14 and X8) and the grounding wire from the latch.Remove the two screws attaching the latch to the casing.When reinstalling the latch allign it in a way that the lid hookmoves in and out smoothly.


44/62


LCD

Remove the front panel.Remove the 4 screws attaching the LCD to the front panel

Keypad

Remove the front panel.Disconnect the overlay from the overlay adaptor board.Use a screwdriver, knife or similar to remove a corner of theoverlay from the front panel. Pull the overlay off.Clean the surface of the front panel from all glue remainders.

Sensor cover with speed, imbalance and rotor detection

Open the lid.Remove the front panel and flip down the main board.Disconnect the sensor cover from the main board (X12 andX13).Remove the AutoLock head from the motor.Remove the 5 screws attaching the sensor cover to the motor.

Attach a string to the cables before pulling them through.Remove the sensor cover.Use the string to pull the cables of the new sensor cover through.

Brake Resistor with over temp. cut out

Remove the front panel and flip down the main board.

Disconnect the brake resistor and its over temp. cut out fromthe main board (X20 and X9).Remove the back panel.Remove the 2 screws attaching the brake resistor to its holder. Attach a string to the cables before pulling them through.Remove the brake resistor.Use the string to pull the cables of the new brake resistor through. After reassembly check the function of the brake resistor duringa short test run (resistor must heat up during braking –CAUTION it may be hot!).


45/62


Replacement of drive components

Drive motor

Open the lid.Remove the front panel and flip down the main board.Disconnect the motor and its over temp. cut out from the mainboard (X10 and X11).Remove the AutoLock and the sensor cover. It is not necessaryto pull out the r

service manual - sorvall - heraeus - thermo scientific - megafuge 8 sl8 st8 - v180113

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