Service Manual - Drucker Diagnostics
Contents
1. Rotor damaged Replacement required PROBLEM POSSIBLE CAUSE SOLUTION No Power Check line cord No Power Check circuit breaker on underside of centrifuge No Power Check wall outlet Rotor does not spin Lid not properly latched Press down firmly on lid and rotate lid knob clockwise until the LATCHED light illuminates Internal connection failure Requires service PCB failure Requires service Motor Failure Requires service PROBLEM POSSIBLE CAUSE SOLUTION Clicking noise during braking Rotor is loose Tighten rotor nut per section 7 2 PROBLEM POSSIBLE CAUSE SOLUTION Debris in air intake exhaust ports Remove power before clearing debris Whistling noise while running Gasket failure Requires service THE DRUCKER COMPANY MODEL 642VFD SERVICE MANUAL 5 004 REV Original Issue 7 SERVICE INSTRUCTIONS 7 1 Cleaning a The cabinet rotor top and accessories shall be thoroughly cleaned using soap and water isopropvi alcohol or a mild bleach solution b Under no circumstances should any of the following be used Fully Partially Halogenated Hvdrocarbons Ketones and Esters 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 22 Removing the Rotor a Use a 1 2 nut driver to loosen the center rotor screw turn coun2. THE DRUCKER CO 200 Shadylane Drive Philipsburg PA 16866 Phone 814 342 6205 Fax 814 342 4510 www druckercompany com Service Manual Model 642VFD Centrifuge THE DRUCKER COMPANY 5 004 MODEL 642VFD SERVICE MANUAL REV Original Issue CONTENTS 17 i E A e teed 3 2 INTENDED USE ii iii pa a IB Ea bija pan 3 3 GENERAL DESCRIPTION OF MAJOR COMPONENTS 3 4 3 5 SPECIFICATIONS i Sp Ta Bee b STA b A TA 3 6 TROUBLESHOOTING si ie bb Ebejer ti 4 7 SERVICEINSTRUCTIONS idi aa ie ad a d a e 5 8 WIRING DIAGRAM a iii la data e ia a 10 9 BINAL CENTRIFUGE ASSEMBLY te af TA twa T i odda 11 10 CABINET ASSEMBLY fs isir a aa a Ba Spa SPS pa i as MTA aa 12 11 LOWER ASSEMBLY iii sine i ebla erba asa 13 42 MOTOR ASSEMBLY ea da a es l 14 13 5 15 THE DRUCKER 5 004 MODEL 642VFD 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 tech
3. HINGE SPACER 2 15 7724071 FRICTION HINGE 2 16 3012009 SCREW 8 32 x 1 00 PAN HEAD PHILLIPS SILVER 4 17 02 002 1 0000 614 642 LID ASSEMBLY 1 18 3012004 SCREW 6 375 PH PHIL SELF TAP BLUNT SILVER 14 19 OEM SPECIFIC LABEL OPEN CLOSE 1 20 SPECIFIC UNLOCKING INSTRUCTION LABEL 1 21 SPECIFIC 642 STOP WARNING LABEL 1 THE DRUCKER COMPANY MODEL 642VFD SERVICE MANUAL 5 004 REV Original Issue 12 11 LOWER ASSEMBLV ITEM NO PART NUMBER DESCRIPTION 1 7710188 642 Cabinet Base Flanged 1 2 3000001 RIVET POP 0 16 X 0 375 9 3 3023001 NUT INSERT 8 32 THREAD 11 4 7724037 614 642 8 32 SUCTION FOOT 4 5 03 1 0005 0055 8 PEM STUD 5 8 LONG PEM FH832 10 1 6 3000005 STRAIN RELIEF LINE CORD 1 7 7751043 BREAKER 4A 1 8 7724002 LABEL GROUND 1 9 02 003 1 0014 614 642 GUARD BOWL COATED 1 10 02 005 1 0000 MOTOR ASSEMBLY 1 11 3022003 8 32 NYLOCK NUT 4 12 7732019 642 842 GASKET ROTOR CHAMBER 1 13 7713027 614 642 643 755 EXHAUST AIR DEFLECTOR 1 14 3033012 8 INTERNAL TOOTH WASHER 1 15 3022001 8 32 HEX NUT 1 16 7729009 653ES 614V MOTOR CAPACITOR 5 MICROFARAD 1 17 3012007 SCREW PHILLIPS 8 32 0 50 LONG 1 18 7760002 ALL MODELS CORD LINE WEBBER TYPE B 1 THE DRUCKER COMPANY MODEL 642VFD SERVICE MANUAL SM004 REV Original Issue 13 12 MOTOR ASSEMBLV ITEM NO PART N
4. x 100mm Dimensions in 9 0 H x 11 0 W x 12 5 L Environmental Operating Range 2 40 deg C Typical Noise Level At Maximum Speed lt 65dBA Electrical Ratings 115VAC 10V THE DRUCKER COMPANY 5 004 MODEL 642VFD SERVICE MANUAL REV Original Issue 6 TROUBLESHOOTING PROBLEM POSSIBLE CAUSE SOLUTION 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 fullv clockwise before pressing the OPEN button The lid does not open Lid lock is active Unlock timed out Press the OPEN button to de activate the lid Lid trav is unplugged from PCB or defective Requires service PCB is damaged Requires 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 Rotor improperly loaded Load equally filled tubes symmetrically in the rotor All carriers and or tube holders must be present in the rotor whether loaded or empty Excessive vibration Debris lodged within the rotor or tube carriers Carefully inspect all rotor pockets tube holders and crevasses for debris Centrifuge housing is loose Requires service Missing damaged feet Requires service Motor failure Requires service
5. UMBER DESCRIPTION QTY 1 7735049 642 PSC Motor 115 VAC 1 2 3062001 PIN 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 MODEL 642VFD SERVICE MANUAL 5 004 REV Original Issue 14 13 REVISION HISTORV Revision Date Details of Change Original 07 07 2013 Original Issue DR 2958 THE DRUCKER COMPANY MODEL 642VFD SERVICE MANUAL 5 004 REV Original Issue 15
6. ed capacitors when working with the PCB The PCB is held in place with four 6 Nylok 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 they are crushed replace them before reassembly 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 they cannot be actuated too high and they jam against the front panel label and are always 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 nom
7. fied as laboratory equipment per the requirements of UL 61010 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
8. inal diameter To remove them drill the heads off with a 3 16 drill bit f Lift the base assembly off of the guard bowl and set it aside g Flip the guard bowl THE DRUCKER COMPANY 5 004 MODEL 642VFD SERVICE MANUAL REV Original Issue h i The motor is held in place with 4 8 Nvlok 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 5 004 MODEL 642VFD 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 a
9. ir cover with three 5 32 rivets Make certain that the motor wire harness is contained 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 Jx 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 8 screws washers and lock washers with a 2 Phillips driver THE DRUCKER COMPANY SM004 MODEL 642VFD SERVICE MANUAL REV Original Issue 9 8 WIRING DIAGRAM L 000001 Counter Locking Tray Assembly P N 7745017 P N 7717049 FOR 642VFD USE PCB 7717038 FOR 642VFD PLUS USE PCB 7717035 Line Cord 7760014 THE DRUCKER COMPANY MODEL 642VFD SERVICE MANUAL TO GROUND STUD IN BASE TO GROUND STUD IN CABINET Motor P N 7735049 SM004 REV Original Issue 4 uF Capacitor T P N 7729006 10 Wire Identification Type and Length 1 03 1 0005 0020 14 Inch 2 03 1 0005 0019 7 5 Inch 3 03 1 0005 0018 14 Inch 4 03 1 0005 0076 9 Inch COMPONENTS Butt Splice Red P N 3081001 Disconnect Faston P N 3081003 Di
10. nician with information for troubleshooting testing and repair of laboratory centrifuge model 642VFD Only qualified technically trained personnel should attempt any of the servicing described in this document Failure to follow the procedures in this document may result in personal injury 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 642 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 cycles 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 3800 RPM Maximum RCF 2000 xg Maximum Capacity 6 Tubes 17
11. not to stress the cables when removing the cabinet e Stand directly 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 5 004 MODEL 642VFD SERVICE MANUAL REV Original Issue 6 e f To install the lid tray slide it onto the studs and secure it with two 6 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 charg
12. sconnect Faston 18 22 AWG P N 3081002 Connector IDC 6 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 FINALCENTRIFUGE ASSEMBLV ITEM NO JPART NUMBER JDESCRIPTION QTY 1 02 003 0 0009 642 LOWER ASSEMBLY 1 2 7786021 642 842 HORIZONTAL ROTOR 6 PLACE DRILLED 1 3 33022006 NUT 5 16 18 NVLOK 1 4 3000002 TAPE REFLECTIVE RPM CHECK 1 5 02 003 0 0071 642 CABINET ASSEMBLY 1 6 3033003 IWASHER 8 FLAT SILVER 6 7 3033001 8 SPLIT LOCK WASHER 6 8 3012006 SCREW 8 32 x 0 375 PAN HEAD PHILIPS SILVER 6 9 7724026 SERIAL NUMBER 1 10 7724029 FACTORV CALIBRATION LABEL 1 11 OEM SPECIFIC jJ642VFD FRONT PANEL LABEL 1 THE DRUCKER COMPANV 5 004 MODEL 642VFD SERVICE MANUAL REV Original Issue 11 10 CABINET ASSEMBLY ITEM NO PART NUMBER DESCRIPTION 1 7710185 642 614 1 2 3051001 STUD 6 32 7 8 2 8 3051003 STUD 6 32 x 625 6 4 03 1 0005 0055 8 PEM STUD 5 8 LONG PEM FH832 10 1 5 3023001 NUT INSERT 8 32 THREAD 4 6 7732018 WELL GASKET 1 7 7745017 642 755 LID TRAY ASSEMBLY 1 8 7717049 CYCLE COUNTER 1 9 1 10 3003002 STANDOFF 320 x 203 642 BOARD MOUNT 4 11 OEM SPECIFIC 1 12 3033002 IWASHER 6 FLAT NVLON WHITE 4 13 3022002 NUT 6 32 NVLOK SILVER 8 14 7713003
13. ter clockwise b Lift the rotor straight up and out 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 nut driver until snug A good rule of thumb is one full thread showing above the nut is a good indicator of proper installation 73 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 be tightened use a gt nut driver and tighten 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 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 5 004 MODEL 642VFD SERVICE MANUAL REV Original Issue b All Drucker centrifuges currently manufactured are classi
Download Pdf Manuals
Related Search