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CENTRIFUGE CENTRIFUGE /CR3 /CR3 i i i i SERVI VICE MANU NUAL...
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CAREFULLY READ THIS MANUAL BEFORE OPERATING YOUR INSTRUMENT. CAREFULLY READ THIS MANUAL BEFORE OPERATING YOUR INSTRUMENT. INFORMATION CONTAINED IN THIS DOCUMENT IS THE PROPERTY OF JOUAN ; INFORMATION CONTAINED IN THIS DOCUMENT IS THE PROPERTY OF JOUAN ; IT MAY NOT BE DUPLICATED OR DISTRIBUTED WITHOUT THE OWNER’S AUTHORIZATION.
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CAREFULLY READ THIS MANUAL BEFORE OPERATING YOUR INSTRUMENT. CAREFULLY READ THIS MANUAL BEFORE OPERATING YOUR INSTRUMENT. INFORMATION CONTAINED IN THIS DOCUMENT IS THE PROPERTY OF JOUAN ; INFORMATION CONTAINED IN THIS DOCUMENT IS THE PROPERTY OF JOUAN ; IT MAY NOT BE DUPLICATED OR DISTRIBUTED WITHOUT THE OWNER’S AUTHORIZATION.
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REVISION STATUS REVISION STATUS I I N N D D E E X X D D A A T T E E A A M M E E N N D D E E D D P P A A G G E E S S N N O O T T E E S S i ...
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WARRANTY WARRANTY Subject to the d Subject to the d rvance rvance any inst install allati ation, ope on, ope rati rating or m or m aint aintena in instructi structions, we ons, we warra warra nt t that we wil hat we will at our option replace, or repair free of charge, or credit the purchaser with the full invoice price of any goods or...
1 - 2 1.3. SPECIFICATIONS 1.3.1. DIMENSIONS AND WEIGHT Dime nsions (H x W x D) C3 i : 372 x 400 x 495 mm CR3 i : 3 75 x 5 75 x 6 05 mm Packe d (H x W x D) C3 i ...
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1 - 3 1.4. INSTALLATION PROCEDURE The environment must not b e in a dusty room or cor rosive e nvironme nt. The be nch top must b e of a rigid co nstruction cap ab le o f supp orting the we ight of the ce ntrifuge . IMPORTANT : at least two people are required to lift the centrifuge from the palette and place it on the bench.
2 - 1 2 THEORY OF OPERATION 2.1. DESCRIPTION The microprocessor system which controls the C3 i or CR3 i ce ntrifuge s e nsures the op er ation of the following major elements : - Management of the ope rating modes - Gene ration of alternating curre nt amplitude and freq uency - Adjustab le compone nts for the motor spe ed se rvo - Manage ment of the acce leration and braking profile/rates...
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2 - 2 CONTROL SYSTEM FLEXIBLE KEYBOARD AND DISPLAY LOCK ASSEMBLY USER SWITCH INTERFACE SWITCH TEMPERATURE (CR3i) SOLENOID TEMPERATURE BOWL (CR3i) MOTOR IMBALANCE COMPRESSOR (CR3i) SPEED POWER RACK AND FILTERS MOTOR SUPPLY FIG. 2.1 - CR3i FUNCTIONAL PRESENTATION C 3 i - M...
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2 - 3 ROTOR MOTOR CHAMBER SEAL LID/BOWL SEAL MOTOR STABILIZER SUSPENSION IMBALANCE SENSOR GAS SPRING LID HINGE POWER INPUT RACK CENTRIGUGE BODY CENTRIFUGE BOWL LOCKING SYSTEM COMPRESSOR (CR3i) FRAME MOTOR FIXING BOLTS MICROPROCESSOR + POWER DISPLAY ASSEMBLY FRONT PANEL KEYBOARD FIG.
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2 - 4 FIG. 2.3 - COMPONENTS OF THE C3i 1 . Po we r s u p p ly r a ck 5. Lid lock solenoid 2 . Im b a la nc e s e ns or 6.
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2 - 5 FIG. 2.5 - COMPONENTS OF THE CR3i 1. Cooling fan /condenser 5. Lid lock solenoid 2 . Im b a la nc e s e ns or 6. Display assembly keyboard 3. Induction motor 7. Microprocessor/power pcb 4.
2 - 6 2.3. MOTOR CONTROL PRINCIPLE 2.3.1. INTRODUCTION Th e C 3 i / C R 3 i f a m i l y o f c e n t r i f u g e s i s f i t t e d w i t h a n a s y n c h r o n o us 3 p h a s e m o t o r . D u r i n g t h e ce ntrifugation, the microproc ess or g ene rates a system of sinusoidal 3 phase voltages, variab le in amplitude and frequencies.
2 - 7 2.3.3. POWER CONTROL Three voltages, variable in amplitude and frequency, dephased by 2 π /3, must be supplied from a 50 or 60 Hz single p hase m ains supply. V MAINS STATOR The voltage is rec tified then filtere d b y C to supp ly the c onstant voltag e +E. The value of the cap acitor C is high.
2 - 8 Speed synchronisation is directly proportional to the frequency of the voltage supplied to the motor. Ns = f x 60 (for a 2 pole motor). The motor rotates at a spe ed N below the sp ee d Ns. N s - N = SLIPPAGE (the slipp age varies b etwee n 1 and 3%).
2 - 9 2.4.2. MICROPROCESSOR + POWER PCB On the microprocessor + power pcb, 3 distinct zones can be identified, whose functions are described be low. Each zone has its own inde pe ndent power supply. ZONE 1 : This zone includes the microprocessor, the EPROM containing the software and the non-volatile RAM containing the program parameters.
2 - 10 ZONE 3 WARNING ! THIS ZONE IS AT MAINS VOLTAGE This zone isolated from the microprocessor part by opto-couplers, is the electronic part related to the powe r in the sys tem. This zone includes : - The 15 VDC powe r sup ply for the control elec tronics for this zone. - The control circuit of the 6 b asic signals of the IGBT module.
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