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Thermo IEC Micromax 3590 Service Manual

Ventilated microcentrifuge and refrigerated microcentrifuge
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SERVICE
MANUAL
SM3590
Revision 2
300 Second Ave.
Needham Heights, MA 02429
Tel. (781) 448-8060
Fax (781) 444-6743
www.thermoiec.com
Micromax
Ventilated Microcentrifuge
Cat. No. 3590 -- For 120 VAC, 60 Hz
Cat. No. 3591 -- For 220 - 240 VAC, 50/60 Hz
Cat. No. 3595 -- For 100 VAC, 50/60 Hz
Refrigerated Microcentrifuge
Cat. No. 3592 -- For 120 VAC, 60 Hz
Cat. No. 3593 -- For 220 - 240 VAC, 50 Hz
Cat. No. 3594 -- For 220 - 230 VAC, 60 Hz
Cat. No. 3596 -- For 100 VAC, 50/60 Hz

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  • Page 1 SERVICE MANUAL SM3590 Revision 2 Micromax Ventilated Microcentrifuge Cat. No. 3590 -- For 120 VAC, 60 Hz Cat. No. 3591 -- For 220 - 240 VAC, 50/60 Hz Cat. No. 3595 -- For 100 VAC, 50/60 Hz Refrigerated Microcentrifuge Cat. No. 3592 -- For 120 VAC, 60 Hz Cat.

  • Page 2: Table Of Contents

    TABLE OF CONTENTS INTRODUCTION..................... 1 INSTALLATION ...................... 2 Receiving the Unit ....................2 Site Preparation......................2 Power Configuration ....................3 Moving the Unit......................5 Front Panel .......................5 Refrigeration (RF only) .....................8 First Run ........................9 OPERATION ......................10 Rotors and Accessories ...................10 Operating Modes ......................11 Warning Messages and Error Codes ...............13 APPLICATIONS......................

  • Page 3: Introduction

    INTRODUCTION The Micromax microcentrifuge is a quiet, high-speed bench-top centrifuge for medical, industrial, and scientific laboratories. The unit can achieve centrifugal force of up to 21,000 xg, making it ideal for sedimentation of protein precipitates and separation of blood serum. NOTE: The Micromax microcentrifuge is available in two versions, ventilated and refrigerated.

  • Page 4: Installation

    INSTALLATION Receiving the Unit IEC ships the centrifuge in a carton that protects it from shipping hazards. Retain the carton and packing material through the warranty period in case you need to ship or return the unit. Please be sure to complete the Warranty Registration Card and return it to IEC.

  • Page 5: Power Configuration

    Power Configuration The Micromax model numbers, and voltage and frequency requirements are listed in the table below. MODEL VOLTAGE FREQUENCY 3590 60 Hz 3591 220 - 240 50/60 Hz 3592 (RF) 60 Hz 3593 (RF) 220 - 240 50 Hz 3594 (RF) 220,230 60 Hz...
  • Page 6 • Cat. No. 3593, 3594: The fuse drawer will have two active fuses installed at the factory. Fuse is rated for 6.3 Amps (part no. 50607A). • Cat No. 3595: The fuse drawer will have one spare and one active fuse installed at the factory. Fuse is rated for 8.0 Amps (part no.

  • Page 7: Moving The Unit

    Moving the Unit Suction cups located on the base of the unit are a safety feature which adhere it to the work surface to prevent it from moving. To move the unit to another location, insert an object such as a tongue depressor under each suction cup to break the vacuum seal of that cup (taking care not to damage the suction cup surface).
  • Page 8 • rotor speed or force • elapsed time of, or time remaining in, the run • actual temperature (RF only). The display in the Set mode indicates the desired settings for the run and is operative: • whenever you use the up and down arrows •...
  • Page 9 Use the arrow buttons to view or change the Set parameters for Speed/Force, Time or Temperature (RF only). The first time the button is pressed, the numeric display simply switches from Actual readings to Set parameters, without changing them. If you press the button again, the selected parameter increases or decreases once for each press.

  • Page 10: Refrigeration (Rf Only)

    This button stops the run, and unlocks the cover when the rotor has slowed to below 150 rpm. (A run will also stop automatically when the set time has elapsed or the momentary run button is released.) The red light will flash as an indication that the rotor is still slowing down (braking).

  • Page 11: First Run

    First Run Plug in the centrifuge. If an arrow key is pressed first, the display will briefly show 10,000 RPM, 1:00 minute and 25 °C (RF only) the default set values. Press the Stop/Open Cover button to release the cover interlock. Open the cover.

  • Page 12: Operation

    OPERATION Rotor and Accessories A balanced load is essential with all high-speed centrifuges. An unbalanced load produces vibration and causes excessive wear of motor bearings. Therefore, always load the rotor symmetrically. When using tube adapters, install an adapter in the opposite tube position. The total weight of samples loaded in opposing positions must be equal in weight to within 1.0 gram.

  • Page 13: Operating Modes

    Caution: Improper placement of the cover may allow it to come off during a spin. Rotor Removal To remove the rotor, first remove the cover (851, 852 or 853 only). Then unscrew (counterclockwise) and remove the metal locking nut. The rotor can now be lifted straight out of the rotor chamber.
  • Page 14 Hold Mode To set Hold (continuous) mode Select the Set parameters using the control panel buttons (refer to Section 2.5). Scroll down through zero time on the Time display until the word Hold appears in the display. This mode is used for runs greater than 99 minutes. Momentary To operate in the momentary mode: Select the Set parameters using the control panel buttons...

  • Page 15: Warning Messages And Error Codes

    Warning Messages and Error Codes The beeper sounds in three situations: • Two times on power up. • Three times at the end of a spin. • When a warning occurs (three times). Warnings appear in place of the numeric displays in the following cases: HEAD This appears if a run is started without...
  • Page 16 Err 1 No Tachometer Tachometer signals were not present during run. The rotor coasts to a stop. Cover opening is inhibited after this error. OSPd Overspeed Speed is 15,200 RPM. The rotor will brake to a stop run A Runaway During stopping, rotor has not been decelerating for 8 seconds, or when at standby, rotor speed exceeds 600 RPM.

  • Page 17: Applications

    APPLICATIONS Misapplication of any tube can cause tube rupture. To avoid this, never spin tubes faster than their recommended G-force, and never centrifuge disposable tubes more than once. If the tubes are not rated for the needed force, use more suitable tubes. If breakage does occur, residue will be captive in the tube cavity in the rotor.

  • Page 18: Speed And Force Table

    Speed and Force Table Rotor Cat. No. No. of Tubes and Tube Size Adapter Max Speed Max RCF Radius (cm) Cat. No (RPM) (xg) 24 x 1.5ml 21004 8.35 891 1 24 x 0.6ml B/D Microtainers™ 5763** 21256 8.45 (Aerosol 24 x 0.5ml PCR microtubes 5763** 15000...

  • Page 19: Chemical Resistance Table

    Chemical Resistance Table Plastic Metal Other PA PC PE PP PU NL DN CN NN PS SS AL MB MG RR BN VN PF Acids, dilute or weak Acids*, strong or conc. Alcohols, aliphatic Aldehydes Bases Esters Hydrocarbons, aliphatic Hydrocarbons, aromatic Hydrocarbons, halogenated Ketones Oxidizing Agents, strong...

  • Page 20: Decontamination Table

    Decontamination Table Compatible Processes For Decontamination Sterilization Methods Plastic Metal Other PA PC PE PP PU NL NN PS TI SS AL RR BN VN PF PT Mechanical Autoclave* Ethylene Oxide Gas Dry Heat 160°C@2Hrs. Chemical Ethanol 40% Formalin Methanol 2-Propanol 5% Sodium Hypochlorite** 3% Hydrogen Peroxide...

  • Page 21: Maintenance

    MAINTENANCE The Micromax centrifuge is maintenance-free. In particular, the drive motor is permanently lubricated and has no brushes to replace. Cleaning Keep your centrifuge clean to ensure good operation and to extend its life. Clean the entire sample chamber, rotor, and lid at the end of each 8-hour shift and right after any spill.

  • Page 22: Cover Interlock Bypass

    Cover Interlock Bypass If power fails, the cover remains locked. If you need to remove samples from the unit before power is restored, use the cover interlock bypass. DO NOT ATTEMPT MECHANICAL BYPASS IF ROTOR IS ROTATING Bypass procedure: 1. Unplug the centrifuge from electrical power. Do not perform cover interlock bypass unless instrument is removed from live electrical outlet.

  • Page 23: Table Of Spare Parts

    Table of Spare Parts Cat No. Description 49856 Rotor Cover (851, 852, 853) 50417 Rotor Cover (891) 65690 Rotor Nut (851, 852, 853) 50469 Rotor Nut (891) 65231 Rotor nut washer 43689* 4 Amp fuse 50606B* 6.25 Amp fuse 50607A* 6.3 Amp fuse 50606A* 8 Amp fuse...

  • Page 24: Warranty

    Warranty IEC wants you to be satisfied with the quality of your Micromax centrifuge. We warrantee your IEC centrifuge for one year and IEC rotors for seven years. We will repair or replace any of these products that fails, within this period from the date of its delivery, due to defects in material and workmanship, and we will ship you the repaired product or its replacement at our expense.

  • Page 25: Specifications

    SPECIFICATIONS MODEL VOLTAGE FREQUENCY 3590 60 Hz 3591 220 - 240 50/60 Hz 3592 (RF) 60 Hz 3593 (RF) 220 - 240 50 Hz 3594 (RF) 220, 230 60 Hz 3595 50/60 Hz 3596 (RF) 50/60 Hz Maximum Speed 15,000 RPM Maximum Force 21,000 xg Maximum Number of Tubes...
  • Page 26 Refrigeration system (RF only) Hermetic compressor 1/4 hp Refrigerant (RF only) R-404A (HP-62) Dimensions Height 24.9 cm (9.8 in) cover closed 50.3 cm (19.8 in) cover open Width 30.5 cm (12 in) Depth 33.8 cm (13.3 in) Weight 120 VAC 16.4 kg (36 lb.) Weight 240 VAC 19.3 kg (42.5 lb.)

  • Page 27: Service

    SERVICE Warnings and Cautions Warnings Many service procedures require operation with the cabinet removed. The On/Off key, on the control panel, activates the display and the refrigeration system (RF models only) but does not remove power from the circuit board or other internal components.

  • Page 28: Special Tools

    Special Tools No special tools are required. A multimeter is required to perform diagnostics. Troubleshooting The Micromax has been designed to sense most malfunctions, and to indicate the nature of a problem with a diagnostic message, displayed on the control panel. Diagnostic messages can be divided into two types: warning messages and error codes.
  • Page 29 Indicates the cover was not fully closed when the START button was pressed. Message is cleared by opening the cover. • Close lid completely. • Check lid striker (see section 8.1). • Check latch microswitch (see section 8.4). HEAd No rotor installed. Message is cleared by opening the cover. •...

  • Page 30: Cabinet

    CABINET Cover Assembly The cover assembly contains the blue plastic outer lid, white painted metal lid liner, hinge springs (2), hinge rod, and latch striker. Early models had a fixed (non adjustable) striker. The adjustable striker can be installed using kit no. 50782A (ventilated) or 50782B (RF models).

  • Page 31: Cabinet Housing

    Hinge Springs Hinge Rod Refrigeration Cabinet (RF models only) Lid Liner Bracket Cutout Lid Liner Main Cabinet Cabinet Housing Rear Cabinet Section (Refrigerated Units Only) 1. Unplug the centrifuge. 2. Remove (2) screws located on the back of the rear cabinet section.

  • Page 32: Gaskets

    Main Cabinet (All Units) 1. Remove lid per section 8.1. 2. Remove (4) screws located on the top of the cabinet. (This may require removal of a warning label. Be sure to re-apply the label when finished.) 3. On non-refrigerated units, remove (2) screws located on the back of the cabinet.

  • Page 33: Latch Assembly

    Latch Assembly The latch assembly consists of the latch, solenoid, microswitch, plunger/linkage arm assembly, and emergency release cord. The latch closes in two stages, and must be fully closed (two “clicks”) in order to run the centrifuge. By sensing the position of the plunger/linkage arm connecting pin, the microswitch prevents operation of the unit when the lid is open.
  • Page 34 Disconnect the wiring to the solenoid at J/P12 on the Power PCB. Remove the retaining nut that secures the solenoid to the containment frame. Leaving the plunger and linkage arm assembly in place within the latch, remove the solenoid. Slide the new solenoid onto the plunger. Note: The pin that attaches the solenoid plunger to the linkage arm must be positioned below the microswitch arm in order to properly function, and to indicate lid...

  • Page 35: Power Circuit

    POWER CIRCUIT General Power is supplied to the unit through the Power Entry Module, located on the back of the unit. The Power Entry Module contains a removable fuse tray containing one or two active fuses, depending on the model number (see section 2.3).
  • Page 36 1. Remove lid and cabinet. 2. Remove all connectors at the power board. This includes J8, J9, J10, J11, J12, J13 and J14A, B & C. 3. Plug in the unit. If the fuse blows, check each component from the power entry module to the power board for shorts, and replace as necessary.

  • Page 37: Circuit Boards

    CIRCUIT BOARDS 10.1 General Motor Drive The Micromax electronics consist of three circuit boards, the display board, logic board and the power board. The display board contains the user interface and display components, including an encoder (U6), inverters (U2 & U5), as well as the display drivers (U1, U3, U4).

  • Page 38: Leds & Test Points

    Refrigeration The compressor and condenser fan are both powered through solid state relays (SSR), the compressor through a baseplate mounted SSR and the condenser fan through a power board mounted SSR (U1). Both should be on , along with their corresponding power board LEDs COMP (DS2 - green) &...

  • Page 39: Replacing The Circuit Boards

    10.3 Replacing the Circuit Boards Caution: The circuit boards contain electronic devices that can be damaged by static electricity. Service personnel should be properly grounded (such as by wearing a wrist strap) whenever handling or touching the circuit boards or individual components. When transporting a circuit board, always enclose it in a static-protective bag.
  • Page 40 For ordering spares, use the following guidelines: Part Description NO PULSE PULSE Feature Feature Logic PCB 44476 Kit 50615 Control Panel (Ventilated) 50595A Kit 50614A Control Panel (RF) 50595B Kit 50614B The 44476 Kit will include a 50615 PCB with the older software (revision 2.7) already installed.

  • Page 41: Drive Assembly

    DRIVE ASSEMBLY 11.1 Motor The Micromax utilizes a brushless DC drive motor with built in Hall effect speed sensors. Some electrical motor characteristics can be checked, when the unit is unplugged. These procedures are outlined in this section. Test To measure the resistance of the motor, use the following procedure: Remove the lid and cabinet (see sections 8.1 &...

  • Page 42: Speed Sensor

    7. Turning the unit on its side*, remove the 4 screws from the motor mounting plate. These are accessible through the hole in the unit’s base plate. 8. Partially lift the motor out through the opening in the guardbowl. 9. Reach through the opening in the guardbowl and disconnect the motor ground wire from the base of the motor.

  • Page 43: Brake

    Test WARNING: This procedure requires operation of the unit with power applied and the cabinet removed. Use caution to avoid electric shock. See Section 7.1, Warnings and Cautions. 1. Remove the lid and place the cabinet on its side, leaving the display board connected. 2.
  • Page 44 Test Use this procedure to verify operation of the braking system: WARNING: This procedure requires operation of the unit with power applied and the cabinet removed. Use caution to avoid electric shock. See Section 7.1, Warnings and Cautions. Remove the lid and place the cabinet on its side, leaving the display board connected.

  • Page 45: Refrigeration

    REFRIGERATION 12.1 General The Refrigerated Micromax is capable of maintaining a guard bowl temperature of 4° C at ambient temperatures up to 22° C. The units should be able to maintain those temperatures within ± 2° C of the set point. The unit is charged with 3.9 oz.

  • Page 46: Condensing Unit

    12.2 Condensing Unit Service of the condensing unit should be performed by qualified personnel only, with the proper refrigerant recovery systems. The condensing unit consists of the compressor, the condenser fan and their related electrical components. Test Use the following procedure, to verify voltage to the compressor: WARNING: This procedure requires operation of the unit with...

  • Page 47: Refrigeration Relay

    12.3 Refrigeration Relay The solid state relay (SSR) powers the compressor on a low voltage signal from the Power PCB. To test the SSR, use the following procedure: WARNING: This procedure requires operation of the unit with power applied and the cabinet removed. Use caution to avoid electric shock.

  • Page 48: Pressure Switch

    Replace Use the following procedure to replace the thermistor: Open the cover. Unplug the unit. Remove the lid and cabinet (see Sections 8.1 & 8.2). Remove rotor. Locate the thermistor inside the guardbowl. The thermistor is held in place with a rubber grommet. The body of the thermistor can be accessed through the cutout in the side of the guardbowl containment frame.

  • Page 49: Drawings

    DRAWINGS Drawings included in this section are: 3590 Micromax, Ventilated (3 Pages) 3592 Micromax, Refrigerated (3 Pages) 10878 System Schematic, Ventilated Micromax 10872 System Schematic, Refrigerated Micromax 10873 Display Board Schematic 44474 Display Board Layout PL44474 Display Board Parts List 10874 Motor Drive Board Schematic (2 Pages) 44475...
  • Page 50 ThermoIEC Technical Service Dept. Printed: 09-12-2002 Tel.: +(781)449-8060 Fax: +(781)455-9749...
  • Page 51 ThermoIEC Technical Service Dept. Printed: 09-12-2002 Tel.: +(781)449-8060 Fax: +(781)455-9749...
  • Page 52 ThermoIEC Technical Service Dept. Printed: 09-12-2002 Tel.: +(781)449-8060 Fax: +(781)455-9749...
  • Page 53 ThermoIEC Technical Service Dept. Printed: 09-12-2002 Tel.: +(781)449-8060 Fax: +(781)455-9749...
  • Page 54 REVISIONS DATE APP'D DATE 4/18/96 3520 4/29/96 6/03/96 3553 6/03/96 8/19/96 3636 8/19/96 10/16/96 3724 10/16/96 3/14/98 4440 3/16/98 03/24/99 4853 03/24/99 XFMW1 LINE LINE AUTOXFMR 50638 XFMW2 43689 43689 BLU(1) XFMW3,4 WIRE SLANT ADAPTOR JUMPER Vogt AG 360035-1 50606B PN 3829.67 OR EQUIVALENT 6.25A...
  • Page 55 LINE LINE LINE PSW2 50597B PSW2 50597B 50597B WIRE JUNCTION 360035-1 PSW2 50606A F1,F2 50607A CONDENSER 49998 CONDENSER 6.3A FAN 50627 CONDENSER FAN 50627 50609 FAN 50627 COMPRESSOR 50628A COMPRESSOR 50628B COMPRESSOR 50628B XFMW1 AUTOXFMR PSW1 XFMW1 PRESSURE SWITCH AUTOXFMR 50638 PRESSURE SWITCH PRESSURE SWITCH...
  • Page 56 ThermoIEC Technical Service Dept. Printed: 09-12-2002 Tel.: +(781)449-8060 Fax: +(781)455-9749...
  • Page 57 ThermoIEC Technical Service Dept. Printed: 09-12-2002 Tel.: +(781)449-8060 Fax: +(781)455-9749...
  • Page 58 44477B Part Number: Revision Level: Part Number Description Part Reference UCN0003-01 Microcontroller Motorola MC68HCP11E0FN TPT0000-00 TEST POINT, SOLDER TERMINAL, TURRET, 0.063" TP1 TP2 TP3 TP4 TP5 Mill-max 2108-2-00-44-00-00-07-0 SPC0006-00 For X1 MNT1 BIVAR CI-192-028 SOC0002-00 SOCKET,IC,28 PIN DIP,.6 C-C For U10 CIRCUIT ASSY CA-28MSC-1F SOC0001-00...
  • Page 59 44477B Part Number: Revision Level: Part Number Description Part Reference RES0050-01 RES, MF, 1K,1/8W, 1%, SM R10 R30 R31 R32 R61 Dale CRCW12061001FRT1 RES0028-01 RES 10M Dale CRCW1206106JRT1 RES0022-01 RES, MF, 10K, 1/8W, 5%, SM R15 R33 R34 R35 R36 R37 R38 Dale CRCW1206103JRT1 RES0017-01...
  • Page 60 44477B Part Number: Revision Level: Part Number Description Part Reference ICD0048-01 IC,CMOS,HEX D FLIP-FLOP W/COMMON CLOCK U19 U20 U21 AND RESET Motorola MC74HC174D ICD0045-01 IC,CMOS,OCTAL,3-STATE OUTPUT NON INVERTING Motorola MC74HC374ADW ICD0015-01 IC,CMOS,HEX,SCHMITT INV, 74HC14, SOIC U1 U3 U4 U15 Motorola MC74HC14D ICD0013-00 IC,RAM,CMOS,NON-VOL,2KX8...
  • Page 61 44477B Part Number: Revision Level: Part Number Description Part Reference CON0006-00 HEADER,2 PIN, FRICTION LOCK, 0.100" PITCH 640456-2 CAP0209-00 Cap 2200pF, 50V Kemet C1206C222K5GAC CAP0148-00 CAP 2.2UF,10V C17 C20 C23 C28 C31 C33 Panasonic ECS-T1AY225R CAP0146-00 CAP 22UF,10V Panasonic ECS-T1AC226R CAP0145-00 CAP 150UF,10V TPSD157K010R01M...
  • Page 62 REVISIONS DATE APP'D DATE 2108-2-00-44-00-07-0 02/14/96 3401 02/14/96 04/12/96 3520 04/12/96 04/12/96 3520 04/29/96 08/21/96 3665 08/21/96 +HVF 120VAC CL-60 034.1524 01/27/97 3779 01/27/97 6.3A FAST ACTING 04/03/97 3901 04/03/97 10/27/97 4290 10/27/97 4787 12/02/98 .1uf LPR681M250E9P3 12/02/98 FAN_DRV 500V 680UF 03/22/99 03/22/99...
  • Page 63 +HVF +5VDC +5VDC 640457-6 .1uf 1.8K TO HALL Not Installed EFFECT SENSORS FR804 DL5818 220UF +5VDC 2108-2-00-44-00-07-0 .1uf PWR-INT201 MC14070 FR304 IRF740 VDDH MC14070 .33UF 250V 1.8K J14A DL5818 TACH\ 62560-1 ZMM5248BCT PHASE A 1/2 W +5VDC +5VDC DL4936A DL5818 FR804 +5VDC .1uf...
  • Page 64 ThermoIEC Technical Service Dept. Printed: 09-12-2002 Tel.: +(781)449-8060 Fax: +(781)455-9749...
  • Page 65 REFRIGERATED MICROMAX MOTOR DRIVE BD ASSY PN 44475 ITEM REFERENCE PART/ CONFORMAL MANUF. COATING C3,C5,C6,C7,C8,C9 Capacitor C19,C20,C21, .1UF@50VDC 1206 C25,C27,C30,C32, Panasonic C35,C37 ECU-V1H104KBM Capacitor Thru-Hole .1UF@400VDC PE.10 Panasonic ECQ-E4104KF SPRAGUE 5GP10 C18,C23,C46 Capacitor .01uF@50VDC 1206 Panasonic ECU-V1H103KBM Capacitor Thru-Hole 680UF@250VDC AMLRP AreoM LPR681M250E9P3...
  • Page 66 REFRIGERATED MICROMAX MOTOR DRIVE BD ASSY PN 44475 ITEM REFERENCE PART/ CONFORMAL MANUF. COATING Capacitor Thru-Hole 0.01UF@125VAC PM.0033 Panasonic ECK-DRS103ME DS1,DS2 Diffused Solid State Thru-Hole Green PANASONIC LN38GCP DS3,DS4,DS5 Diffused Solid State Thru-Hole PANASONIC LN28RCP D1,D4,D46,D47,D48, Zener D49,D50,D51 18V, 1/2 Watt DL-35 Motorala ZMM5248BCT...
  • Page 67 REFRIGERATED MICROMAX MOTOR DRIVE BD ASSY PN 44475 ITEM REFERENCE PART/ CONFORMAL D18,D29,D40 400V, 3A D027 Diodes Inc. FR304 , 8A T0220 2 Diodes Inc. FR804 D20,D31,D41 Rectifier, Fast Recovery Thru Hole FH1,FH2 Fuse Holder Thru Hole Signal Wire Un insulated AMP, MTA.100 HD.100 12U 1 640456 2...
  • Page 68 REFRIGERATED MICROMAX MOTOR DRIVE BD ASSY PN 44475 ITEM REFERENCE PART/ CONFORMAL MANUF. COATING Q4,Q5,Q6,Q7,Q8,Q9,Q10 Thru-Hole 400V, 10 A TO-220AB International Rectifier IRF740 Thru-Hole 400V, 3.3 A TO-220AB International Rectifier IRF720 R1,R2,R3, Resistor R16, R30,R31,R32,R43, 100KΩ, 5% 1206 R70,R72 Dale CRCW1206104JRT1 R6,R13 Resistor...
  • Page 69 REFRIGERATED MICROMAX MOTOR DRIVE BD ASSY PN 44475 ITEM REFERENCE PART/ CONFORMAL MANUF. COATING R4,R5,R8, R15,R17, Resistor R29,R39,R42,R71,R73 10KΩ, 1% 1206 R9-R12,R18,R69 Dale CRCW12061020FRT1 Resistor 12KΩ, 5% 1206 Dale CRCW1206123JRT1 Resistor 470KΩ, 5% 1206 Dale CRCW1206474JRT1 Resistor, 1 Watt Thru-Hole 47KΩ, 5% Inrush Current Thru-Hole...
  • Page 70 REFRIGERATED MICROMAX MOTOR DRIVE BD ASSY PN 44475 ITEM REFERENCE PART/ CONFORMAL MANUF. COATING CRCW12063480FRT1 R53,R58,R63 Resistor, 1/2 Watt Thru-Hole 2.7Ω, 5% R1/2W Phillips 5053CX2R700J R54,R55,R59,R61,R64,R67 Resistor 221Ω, 1% 1206 Dale CRCW12062210FRT1 Resistor, 5 Watt Thru-hole .1Ω, 1% Memcor-Truohm SL5-0.1 DALE LVR-5.0-0.1Ω...
  • Page 71 REFRIGERATED MICROMAX MOTOR DRIVE BD ASSY PN 44475 ITEM REFERENCE PART/ CONFORMAL MANUF. COATING TRISTATE HEX INVERTER Motorala DIP16\SO MC14503D U10,U12,U14 Mosfet Driver POWER INT DIP8\SO PWR-INT201TFI U11,U13,U15 Mosfet Driver POWER INT DIP8\SO PWR-INT200TFI Voltage Regulator Thru-Hole 5V, 1.5A T0-220AB National LM340T-5.0 Voltage Regulator...
  • Page 72 REFRIGERATED MICROMAX MOTOR DRIVE BD ASSY PN 44475 ITEM REFERENCE PART/ CONFORMAL MANUF. COATING REF PCB 44452 REF SCHEMATIC 10874 CAPACITOR 100pF,50V 1206 PANASONIC ECU-V1H101JCH Capacitor Thru-Hole 1000UF@25VDC ILLINOIS CAP 108CKR025M Resistor 931Ω, 1% 1206 Dale CRCW12069310FRT1 Capacitor 1uF, 16V SIZE A Panasonic ECS-H1CY105R...
  • Page 73 REFRIGERATED MICROMAX MOTOR DRIVE BD ASSY PN 44475 ITEM REFERENCE PART/ CONFORMAL MANUF. COATING NMC1812X7R105K50 VITRAMON VJ1812Y105KXAMT Capacitor thru-hole 4.7 uF, 10V PANASONIC ECS-F1AE475K Confromal Coating Chemtronics Konform AR200 Resistor, 1/4 Watt Thru-Hole 470KΩ, 5% 250WVDC NCF25J474TR Capacitor 0.1uF, 35V case “Y”...
  • Page 74 ThermoIEC Technical Service Dept. Printed: 09-12-2002 Tel.: +(781)449-8060 Fax: +(781)455-9749...
  • Page 76 9/12/02 ELECTRONICS ASSY PARTS LIST PN 50615 REV 4 USED ON : MICROMAX ASSY : REFRIGERATED MICRO LOGIC BD (PULSE KEY FEATURE) ITEM QTY REFERENCE PART/MANUF. PACKAGE CONFORMAL COATING PCB MACHINED 44454 REV 3 TRANSDUCER T-HOLE AI-550KS Projects Unlimited CAPACITOR 33UF@16V Case “D”...
  • Page 77 9/12/02 ELECTRONICS ASSY PARTS LIST PN 50615 REV 4 USED ON : MICROMAX ASSY : REFRIGERATED MICRO LOGIC BD (PULSE KEY FEATURE) ITEM QTY REFERENCE PART/MANUF. PACKAGE CONFORMAL COATING CONNECTOR T-HOLE 1-640456-2 CONNECTOR T-HOLE NO 640456-3 CONNECTOR T-HOLE NO 52018-6645 Molex R5,R9,R11,R20,R21, RESISTOR...
  • Page 78 9/12/02 ELECTRONICS ASSY PARTS LIST PN 50615 REV 4 USED ON : MICROMAX ASSY : REFRIGERATED MICRO LOGIC BD (PULSE KEY FEATURE) ITEM QTY REFERENCE PART/MANUF. PACKAGE CONFORMAL COATING RESISTOR 1206 CRCW1206102JRT1 Dale RESISTOR 1206 CRCW1206101JRT1 Dale RESISTOR 1206 CRCW1206106JRT1 Dale RESISTOR 1206...
  • Page 79 9/12/02 ELECTRONICS ASSY PARTS LIST PN 50615 REV 4 USED ON : MICROMAX ASSY : REFRIGERATED MICRO LOGIC BD (PULSE KEY FEATURE) ITEM QTY REFERENCE PART/MANUF. PACKAGE CONFORMAL COATING DECODER/ MULTIPLEXER 74HC138AD Motorola MICROCONTROLLER SMT MC68HCP11E0FN3R2 Motorola 3-STATE NON- INVERTING D FLIP-FLOP 74HC374ADW Motorola...
  • Page 80 9/12/02 ELECTRONICS ASSY PARTS LIST PN 50615 REV 4 USED ON : MICROMAX ASSY : REFRIGERATED MICRO LOGIC BD (PULSE KEY FEATURE) ITEM QTY REFERENCE PART/MANUF. PACKAGE CONFORMAL COATING 35462 REV2 TEST FIXTURE/PROCEDURE A/R (2-3 MILS) CONFROMAL COATING CHEMTRONIC KON FORM AR2000 KON FORM SR2000 SHEET 6 OF 6...
  • Page 81 Current Power Test-Point Values for Micromax and Microlite Series Centrifuges New instruments and retrofit kits have test point values and locations which differ from the original configuration noted in the service manual. Please use the following as a guide: Laboratory Sample Preparation 450 Fortune Blvd.

This manual is also suitable for:

Micromax 3591Micromax 3595Micromax 3592Micromax 3593Micromax 3594Micromax 3596

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