Service Manual - Drucker Diagnostics
Contents
1. THE DRUCKER CO 200 Shadylane Drive Philipsburg PA 16866 Phone 814 342 6205 Fax 814 342 4510 www druckercompany com Service Manual Model 642E Centrifuge THE DRUCKER COMPANY SM006 MODEL 642E SERVICE MANUAL REV Original Issue CONTENTS J i EGA SN his A e au 3 2 INTENDED USE ii iii pa a IB 3 3 GENERAL DESCRIPTION OF MAJOR COMPONENTS 3 4 3 5 SPECIFICATIONS narisane asie ri NE b STA PE GR RAN il 3 6 TROUBLESHOOTING Su unu pe ba bt b G eta rbit 4 7 SERVICEINSTRUCTION S i ii bie ee ee Ad a d it as 5 8 WIRING DIAGRAM 115V e 10 9 RINAL CENTRIFUGE ASSEMBLY sis pone asan ilka a qis 11 10 CABINET ASSEMBLY 12 11 LOWER ASSEMBLY iii shah NAARAAT AA eria 13 12 MOTOR ASSEMBLY a ap annua a aa ph i d 14 13 REVISION HISTORY uuu au ln 16 THE DRUCKER COMPANY SM006 MODEL 642E SERVICE MANUAL REV Original Issue 1 PREFACE 1 1 1 2 3 1 3 2 3 3 3 4 The purpose of this manual is to provide the service technician with information for troubleshooting testing and repair of labor2. 5 3000001 RIVET POP 16 X 375 9 6 7732019 642 842 GASKET ROTOR CHAMBER 1 7 7713027 614 642 643 755 EXHAUST AIR DEFLECTOR 1 8 3094002 TIES PLASTIC SELF LOCKING 4 0 2 9 3022001 8 32 HEX NUT 1 10 7786021 642 842 HORIZONTAL ROTOR 6 PLACE DRILLED 1 11 3022006 NUT 5 16 18 NYLOK 1 THE DRUCKER COMPANY MODEL 642E SERVICE MANUAL SM006 REV Original Issue 13 12 BASE ASSEMBLY ITEM NO PART NUMBER DESCRIPTION 1 7717074 642 614 BASE DOMESTIC 2 03 1 0005 0055 8 PEM STUD 5 8 LONG PEM FH832 10 3 3023001 NUT INSERT 8 32 THREAD 4 7724037 614 642 8 32 SUCTION FOOT 5 7760002 LINE CORD TYPE B 6 3000005 STRAIN RELIEF LINE CORD 7 7751043 BREAKER 4A 8 7729006 642 CAPACITOR MOTOR 4 MICROFARAD S 3012007 SCREW PHILLIPS 8 32 0 50 LONG 10 7724002 LABEL GROUND 11 3033012 8 INTERNAL TOOTH WASHER 12 3022001 8 32 HEX NUT e e THE DRUCKER COMPANY SM006 MODEL 642E SERVICE MANUAL REV Original Issue 14 13 MOTOR ASSEMBLY ITEM NO PART NUMBER DESCRIPTION 1 7735049 642 5 Motor 115 1 2 3062001 ROLL 642 MOTOR DRIVE 010 x 0 625 1 3 7786028 642 643 TAPERED ROTOR HUB 1 4 7728103 614 642 Motor Ring 1 5 3003003 WASHER RUBBER MOTOR MOUNT 0 175 x 0 5 OD x 0 18 4 6 3081003 DISCONNECT 0 18 FEMALE 2 7 03 1 0005 0000 WIRE BLACK 1 THE DRUCKER COMPANY 5 006 MODEL
3. Range 2 40 deg C Tvpical Noise Level At Maximum Speed lt 65 dBA Electrical Ratings 115VAC 10V THE DRUCKER COMPANY SM006 MODEL 642E SERVICE MANUAL REV Original Issue 6 TROUBLESHOOTING PROBLEM POSSIBLE CAUSE SOLUTION The lid does not open No Power Check line cord No Power Check circuit breaker on underside of centrifuge No Power Check wall outlet Lid knob is ajar Rotate the lid knob fully clockwise before pressing the OPEN button Lid lock is active Unlock timed out Press the OPEN button to de activate the lid Lid tray is unplugged from PCB or defective Reguires service PCB is damaged Reguires service To gain access to the rotor Remove the OPEN CLOSE sticker and slide the lid latch lever toward the front of the centrifuge This will unlock the lid PROBLEM POSSIBLE CAUSE SOLUTION Excessive vibration Rotor improperly loaded Load egually filled tubes symmetrically in the rotor All carriers and or tube holders must be present in the rotor whether loaded or empty Debris lodged within the rotor or tube carriers Carefully inspect all rotor pockets tube holders and crevasses for debris Centrifuge housing is loose Reguires service Missing damaged feet Reguires service Motor failure Reguires service Rotor damaged Replacement required PROBLEM POSSIBLE CAUSE SOLUTI
4. with four 46 Nvlok nuts and plastic insulator washers Use a 5 16 nut driver to remove the nuts The PCB and washers are now free to slide off the threaded studs Beneath the PCB are four plastic standoffs If thev are crushed replace them before reassembiv To install the PCB make certain that four plastic standoffs are present on the control panel studs Slide the board onto the studs Install four plastic washers onto the studs Important over tightening the PCB nuts will cause malfunction Each nut sets the height of a separate control panel switch Too low and thev cannot be actuated too high and thev jam against the front panel label and are alwavs in the ON state Tighten the nuts only until the buttons on the control panel click when pressed do not over tighten Each nut sets the height of a separate control panel button Tighten each nut a turn in succession trying each corresponding button as you go Once each control panel button clicks when pressed installation is complete 7 11 Removing the motor a Remove the cabinet assembly as previously described b Cut and remove all wire harness zip ties c Flip the base assembly up side down and drill off the heads of the three exhaust air channel rivets with a 3 16 drill bit d Set the exhaust cover aside e The guard bowl is held in place with six low profile head rivets 5 32 nominal diameter To remove them drill the heads off with a 3 16 drill bi
5. 10 1 Electrical Equipment for Measurement Control and Laboratory Use Part 1 General Requirements This standard specifies that the maximum current levels between any accessible parts are as follows In normal condition the maximum current flow between accessible parts is 0 5mA RMS for sinusoidal waveforms 0 7mA peak for non sinusoidal waveforms or mixed frequencies or 2mA DC In single fault condition the maximum current flow between accessible parts is 3 5mA RMS for sinusoidal waveforms 5mA peak for non sinusoidal waveforms or mixed frequencies or 15mA DC 7 7 Ground continuity a Check the centrifuge s ground continuity periodically we recommend every two years b Disconnect the manufacturer s supplied power cord from the power supply c Measure the resistance between the ground tab of the line cord and an exposed clean unpainted metal surface contiguous to the chassis main frame d The maximum acceptable ground resistance is 0 1 Ohms 7 8 Removing the Cabinet Upper Housin a There are six screws that fasten the centrifuge cabinet to the base b Begin by unplugging the centrifuge and waiting 10 minutes for internal voltages to dissipate c Use a 2 Phillips screwdriver to remove the cabinet screws two on left and right sides two in the rear d The centrifuge control panel is attached to the base internally with cable harnesses Be careful not to stress the cables when removing the cabinet e Stand dir
6. 642E SERVICE MANUAL REV Original Issue 15 14 REVISION HISTORY Revision H Date Details of Change Original 07 07 2013 Original Issue DR 2958 THE DRUCKER COMPANY MODEL 642E SERVICE MANUAL SM006 REV Original Issue 16
7. ON Rotor does not spin No Power Check line cord No Power Check circuit breaker on underside of centrifuge No Power Check wall outlet Lid not properly latched Press down firmly on lid and rotate lid knob clockwise until the LATCHED light illuminates Internal connection failure Reguires service PCB failure Reguires service Motor Failure Reguires service PROBLEM POSSIBLE CAUSE SOLUTION Clicking noise during braking Rotor is loose Tighten rotor nut per section 7 2 PROBLEM POSSIBLE CAUSE SOLUTION Whistling noise while running Debris in air intake exhaust ports Remove power before clearing debris Gasket failure Reguires service Gasket failure Requires service THE DRUCKER COMPANV MODEL 642E SERVICE MANUAL SM006 REV Original Issue 7 SERVICE INSTRUCTIONS 7 1 Cleaning a The cabinet rotor top and accessories shall be thoroughly cleaned using soap and water isopropyl alcohol or a mild bleach solution b Under no circumstances should any of the following be used Fully Partially Halogenated Hydrocarbons Ketones and Esters c Use of any chemicals not prescribed by the manufacturer may cause damage to the rotor and tube carriers holders and shall not be used 7 2 Removing the Rotor a Use a 1 2 nut driver to loosen the center rotor screw turn counter clockwise b Lift the rotor straight up and out
8. ained within the cover s wire channel See fig 2 Fig 2 1 Replace the zip tie removed earlier m The lower assembly is complete 7 13 Power Connections and Final Assembly IMPORTANT These steps must be followed to avoid personal harm and to avoid damaging the PCB a Make certain that the lower assembly is unplugged from the mains supply b Connect the motor power connector to J5 on the PCB c Carefully place the cabinet onto the base taking care not to pinch any wires between the two d Complete the assembly by replacing the six H8 screws washers and lock washers with a 2 Phillips driver THE DRUCKER COMPANV SM006 MODEL 642E SERVICE MANUAL REV Original Issue 9 8 WIRING DIAGRAM Locking Tray Assembly P N 7745017 TO GROUND STUD IN BASE 4 uF Capacitor T P N 7729006 Motor P N 7735049 Line Cord 7760014 THE DRUCKER COMPANY SM006 MODEL 642E SERVICE MANUAL REV Original Issue Wire Identification Tvpe and Length 1 03 1 0005 0020 18 Inch 2 03 1 0005 0018 19 Inch COMPONENTS Disconnect Faston PIN 3081003 Disconnect Faston 18 22 AWG P N 3081002 Connector IDC 4 Place P N 3081006 Connector IDC 4 Place P N 3081019 Connector Ring for 8 Stud P N 03 1 0005 0054 Circuit Breaker P N 7751043 9 FINAL CENTRIFUGE ASSEMBLY PART NUMBER DESCRIPTION 02 003 0 0074 642E LOWER ASSEMBLY 02 003 0 0075 642E CABINET ASSEMBLY 3012006 SCREW 8 32
9. atorv centrifuge model 642E Onlv qualified technicallv trained personnel should attempt anv of the servicing described in this document Failure to follow the procedures in this document may result in personal injurv or instrument damage The Drucker Company will not be held liable for any injury or damage as a result of improper servicing Information contained within this manual is subject to change without notice INTENDED USE Model 642E is a general purpose laboratory centrifuge intended for sample separation GENERAL DESCRIPTION OF MAJOR COMPONENTS Motor Permanent Split Capacitor AC Motor Printed Circuit Board The PCB is the microcontroller based control center of the centrifuge All control signals are generated in the PCB Lid Locking Tray Assembly The lid tray assembly contains a solenoid and limit switch that are used to determine the state of the lid Open or Closed and to keep the lid locked during centrifugation cvcles Rotor The centrifuge rotor is the main component that spins in the centrifuge The rotor is loaded with tube holders and the samples are placed into the tube holders for processing WARRRANTY INFORMATION The Drucker Company warrants its centrifuges to be free from defects in workmanship and parts for two years 5 SPECIFICATIONS Maximum Speed 3380 RPM Maximum RCF 1590 xg Maximum Capacity 6 Tubes 17 x 100mm Dimensions in 9 0 H x 11 0 W x 12 5 L Environmental Operating
10. ectly in front of the centrifuge and lift the cabinet straight up and off the base setting it down on its right side f Gently remove the combination power supply motor harness from the PCB 7 9 Replacing the Lid Tray Assembly a The lid tray assembly is accessible once the cabinet has been removed b Gently remove the lid tray wire harness from the PCB c The lid tray assembly is held in place with two 6 Nylok nuts Use a 5 16 nut driver to remove the nuts The tray will slide off the threaded studs d Early models used a plastic spacer between the tray assembly and the metal cabinet A spacer is no longer needed IMPORTANT Remove any plastic spacer that may be present THE DRUCKER COMPANY 5 006 MODEL 642E SERVICE MANUAL REV Original Issue 6 e f To install the lid tray slide it onto the studs and secure it with two 46 Nvlok nuts hand tight Complete the installation by gently plugging the wire harness into the PCB header J4 The header and connector are keyed for proper orientation 7 10 Replacing the PCB a b c d e f g h j The PCB is accessible once the cabinet has been removed Make certain that all wire harnesses have been disconnected The PCB has capacitors that will remain charged for a period after the centrifuge is unplugged Make certain to use standard precautions for handling potentially charged capacitors when working with the PCB The PCB is held in place
11. of the rotor chamber c To install the rotor reverse steps A and B above d Take care to align the hub spines with the rotor hub e Tighten the rotor nut by hand with a nut driver until snug A good rule of thumb is one full thread showing above the nut is a good indicator of proper installation 7 3 Maintaining the Rotor a Keep the rotor clean any corrosive materials must not be allowed contact with the rotor and should be cleaned immediately b The rotor should be checked periodically for signs of wear c Remove the rotor from service if any of the following are found cracks deep scratches corrosion or discoloring 7 4 Rotor Nut a If the rotor screw needs to be tightened use a gt nut driver and tighten it by hand until snug b Rule of thumb One full thread showing above the nut is a good indicator of proper installation 7 5 Speed Calibration a Check the centrifuge speed periodically we recommend every two years b Important When verifying rotor speed make certain that all tube holders are installed in the rotor c No calibration adjustment of speed can be made only a verification of rotor speed 7 6 Line Leakage a Check the centrifuge s line leakage periodically we recommend every two years THE DRUCKER COMPANY SM006 MODEL 642E SERVICE MANUAL REV Original Issue b All Drucker centrifuges currently manufactured are classified as laboratory equipment per the requirements of UL 610
12. t f Lift the base assembly off of the guard bowl and set it aside g Flip the guard bowl THE DRUCKER COMPANY SM006 MODEL 642E SERVICE MANUAL REV Original Issue h i The motor is held in place with 4 8 Nylok nuts Remove them with an 11 32 nut driver Slide the motor and motor gasket out of the guard bowl s motor well 7 12 Replacing the motor a b c d e f g h Make certain that new rubber washers are used on the motor mounting studs when installing a motor Locate the seam on the inside of the guard bowl wall Position the motor so its wires exit approx 180 deg away from the guard bowl seam Install the motor and gasket into the guard bowl with the wire harness positioned as described above Drive 4 8 Nvlok nuts onto the motor studs with an 11 32 nut driver Turn the guard bowl assembly upside down with the guard bowl seam facing you Place the base assembly with line cord facing away from you onto the guard bowl IMPORTANT Make certain that no wires are pinched between the guard bowl and base IMPORTANT Tuck a portion of the motor wire harness into the rectangular cutout in the base See fig 1 Figure 1 THE DRUCKER COMPANY SM006 MODEL 642E SERVICE MANUAL REV Original Issue j Fasten the guard bowl to the base with six 5 32 nominal diameter low profile head rivets k Install the exhaust air cover with three 5 32 rivets Make certain that the motor wire harness is cont
13. x 0 375 PAN HEAD PHILIPS SILVER 3033003 WASHER 8 FLAT SILVER 30 000015 SCREW 6 19 X 5 16 THREAD FORMING PAN HEAD 7724025 LABEL CONTROL PANEL TIMER INSTRUCTIONS 7724029 FACTORY CALIBRATION LABEL mA 7724026 SERIAL NUMBER WO IN ID A G N IB 7724105 UNLOCKING INSTRUCTION LABEL SMALL 10 OEM SPECIFIC THE DRUCKER COMPANY FRONT PANEL LABEL SM006 MODEL 642E SERVICE MANUAL REV Original Issue e jo lw fe 11 10 CABINET ASSEMBLY ITEM NO PART NUMBER DESCRIPTION 1 03 1 0002 0054 614 642 PLASTIC CABINET 1 2 7732018 MOTOR WELL GASKET 1 3 02 002 1 0011 614 642 LID ASSEMBLY 1 4 7724071 FRICTION HINGE 2 5 30 000013 SCREW 8 16 X 1 2 THREAD FORMING 4 6 3012004 SCREW 6 x 375 PH PHIL SELF TAP BLUNT SILVER 4 7 7745017 642 755 LID TRAY ASSEMBLY 1 8 30 000014 SCREW 8 32 X 1 2 THREAD CUTTING FLAT HEAD 2 9 7724023 LABEL OPEN CLOSE 1 11 03 1 0002 0055 614 642 FRONT PANEL 1 12 7724017 642E LABEL STOP WARNING 1 THE DRUCKER COMPANV MODEL 642E SERVICE MANUAL 5 006 REV Original Issue 12 11 LOWER ASSEMBLY ITEM NO PARTNUMBER DESCRIPTION OTY 1 02 003 1 0016 645 GUARD BOWL COATED 1 2 02 005 1 0000 MOTOR ASSEMBLY 1 3 3022003 8 32 NYLOCK NUT 4 4 02 003 1 0021 642E BASE ASSEMBLY DOMESTIC PLASTIC CABINET 1
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