OHAUS FC5916 Service Manual
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OHAUS FC5916 Service Manual

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FC5916/FC5916R
Service Manual

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Summary of Contents for OHAUS FC5916

  • Page 1 FC5916/FC5916R Service Manual...

  • Page 2: Table Of Contents

    Danger and precautions ..........................3 Service Facilities ..............................4 Tools and Test Equipment Required ......................... 4 1.5.1 Standard Tools and Test Equipment ......................4 Transporting and Packing Centrifuge FC5916/FC5916R .................. 4 1.6.1 Transport ............................... 4 1.6.2 Packing................................4 Technical Data ..............................5 1.7.1...
  • Page 3 Replacing the front housing, the incremental shaft encoder, the display and the foil keyboard ....26 Removing the housing and the lid gasket GLUED ................... 28 Removing the lid .............................. 29 Removing the hinges ............................30 Replacing the motor and the Rotor Sensor ..................... 31 Replacing the fan .............................

  • Page 4: Getting Started

    1 GETTING STARTED Introduction This service manual contains the information needed to perform routine maintenance and service on the Ohaus centrifuge model FC5916/FC5916R. Before servicing the equipment, you should be familiar with the Instruction Manual which is packed with every equipment.

  • Page 5: Safety Precaustions

    1.3.2 Rotor and Accessories Only OHAUS original rotors and accessories shall be used. Any other use or intended use is considered improper. OHAUS is not liable for damage resulting from improper use.

  • Page 6: Exclude The Following Environmental Influences

    EN 61010-2-020.  FC5916/FC5916R is not explosion-proof and must therefore not be operated in explosion- endangered areas or locations. Centrifugation of flammable, explosive, radioactive, or such substances, which chemically react with high energy, is strictly prohibited. The final decision on the risks associated with the use of such substances is the responsibility of the user of the centrifuge.

  • Page 7: Service Facilities

    1.5.1 Standard Tools and Test Equipment Flat and Philip screws drivers, tweezers, adjustable open wrenches and socket set (with drive socket sets from 4mm-14mm, Ratchet and drive extension bar.) Transporting and Packing Centrifuge FC5916/FC5916R 1.6.1 Transport  Please transport the device in the original packaging.

  • Page 8: Technical Data

    GETTING STARTED FC5916/FC5916R Service Manual Technical Data 1.7.1 Acceleration/ Deceleration times FC5916 (120 V / 230 V) in sec Acceleration Deceleration Time in sec Time in sec Item No Rotor Description Model level 0 level 9 level 0 level 9 Rotor, Angle, 24x1.5/2.0ml, ID,...

  • Page 9: Imbalance Shut Off Data

    GETTING STARTED FC5916/FC5916R Service Manual 1.7.2 Imbalance shut off data FC5916 (120 V / 230 V) Rotors where the Imbalance follow movement sensor Shut off speed (approx. Rotor-number Permitted imbalance in gram Imbalance shut-off in gram values) in rpm 30314836...

  • Page 10: Lowest Temperatures Fc5916R (120V / 230 V) At Maximum Speed

    GETTING STARTED FC5916/FC5916R Service Manual Imbalance adjusted with the mechanical micro switch. This rotor has to be adjusted with the mechanical micro switch. See chapter 3.9. Rotor-number Shut off speed (approx. Permitted imbalance in gramm Imbalance shut-off in gramm values) in rpm...

  • Page 11: Specifications

    GETTING STARTED FC5916/FC5916R Service Manual 1.7.4 Specifications Model FC5916 Speed Range 200 rpm -16000 rpm;10 rpm/set Maximum RCF 24325 x g;10 x g/set Maximum Capacity(Rotor) 4x750ml Temperature range(N/A) Air cool Running Time 10 sec to 99 hr 59 min 59 sec or continuous ≤...
  • Page 12 GETTING STARTED FC5916/FC5916R Service Manual Model FC5916R Speed Range 200 rpm -16000 rpm;10 rpm/set Maximum RCF 26331 x g;10 x g/set Maximum Capacity(Rotor) 4x750ml Temperature range(Digital) -20~40℃ Running Time 10 sec to 99 hr 59 min 59 sec or continuous ≤...

  • Page 13: Service Instructions

    FC5916/FC5916R Service Manual Service Instructions 1.8.1 General technical description Model FC5916 is a microprocessor controlled laboratory centrifuge. Model FC5916R is a cooled microprocessor controlled laboratory centrifuge. The actuation is a three phase asynchronous motor which is controlled by a frequency converter.

  • Page 14: Control Panel

    GETTING STARTED FC5916/FC5916R Service Manual 1.8.2.3 Control panel The control panel consists of one LCD-display, one incremental shaft encoder, the upper front housing and the foil keyboard. These parts can be exchanged separate. The incremental shaft encoder regulates all parameters which are adjustable by pressing a key and which are indicated in the LCD-display.

  • Page 15: Rotor Recognition And Over Speed Protection

    GETTING STARTED FC5916/FC5916R Service Manual 1.8.2.5 Rotor recognition and over speed protection The centrifuge will recognize the inputted rotor through the rotor identification transponder and the Rotor Sensor belonging to it right after the insert automatically. As soon as the lid is closed, the rotor number will be indicated in the speed display.

  • Page 16: Lid Contact

    GETTING STARTED FC5916/FC5916R Service Manual 1.8.2.7 Lid contact The micro switch in the mechanism of the lid lock controls the correct closing of the centrifuge lid. The switch may never be bypassed. The lid lock, receiving its signal from the control board, is unlatched by a DC motor.

  • Page 17: Service Menu

    Part 1 is accessible for the USER and different points can be read respectively settled. This is also described in the instruction manual. Part 2 is for internal use respectively for OHAUS trained service personnel only. Activation of the operation menu The menu can be started as follows: •...

  • Page 18: Submenu Motor Starts

    MAINTENANCE FC5916/FC5916R Service Manual 2.1.1 Submenu Motor starts: Here you can read off the number of motor starts. • Activate the operation menu as described under „Activation of the operation menu (Part 1)“. • Turn the potentiometer until the special digit „A“ appears in the service display.

  • Page 19: Submenu Software Status

    MAINTENANCE FC5916/FC5916R Service Manual 2.1.4 Submenu Software status Here you can read of the software status. • Activate the operation menu as described under „Activation of the operation menu (Part 1)“. • Turn the potentiometer, until the special digit „S“ appears in the service display.

  • Page 20: Submenu Setup Of The Temperature (For Refrigerated Units Only)

    MAINTENANCE FC5916/FC5916R Service Manual • According to the software status, individual error messages may not be indicated resp. may have slight deviations. 2.1.7 Submenu Setup of the temperature (for refrigerated units only) Here you can change the temperature unit from degree Celsius (° C) to degree Fahrenheit (°...

  • Page 21: Submenu Setup Of The Keypad Tone

    MAINTENANCE FC5916/FC5916R Service Manual Attention: In case that the signal generator is switch off, the keypad tone and the audible error message will also be suppressed. The keypad tone has to be switched on again after the reactivation of the signal generator.

  • Page 22: Submenu Setup Volume Of The Signal Generator

    MAINTENANCE FC5916/FC5916R Service Manual 2.1.10 Submenu Setup volume of the signal generator Here you can setup the volume of the loudspeaker in case the signal generator is activated. • Activate the operation menu as described under „Activation of the operation menu (Part 1)”.

  • Page 23: Submenu Check And Calibration Of The Imbalance Sensor

    MAINTENANCE FC5916/FC5916R Service Manual • By pressing the key RPM/RCF the display „rpm/rcf“ is now activated and you can setup the respective option with the potentiometer. • Now the setup melody will be played by the end of the run, whereas you can choose between 0 and 9 setups (anyway 10 melodies).

  • Page 24: Submenu Indication Of The Imbalance Value Of The Rotor

    MAINTENANCE FC5916/FC5916R Service Manual Attention: After all points have been reviewed and/or set up, you have to press shortly the key Start to store all parameters. Otherwise the setups were all for nothing. If the storage has been successful in the display „rpm/rcf“ the value of the imbalance sensor and the word „StorE“...

  • Page 25: Submenu Indication Of The Revision Number Of The Control Panel

    MAINTENANCE FC5916/FC5916R Service Manual 2.1.15 Submenu Indication of the revision number of the control panel Check of the external imbalance sensor: Here you can read off the revisions number of the control board. From the revision number 2 and the software version 1.33 on or higher, you have the possibility to check the function of the imbalance sensor.

  • Page 26: Submenu Adjustment Of The Operation Mode

    MAINTENANCE FC5916/FC5916R Service Manual • Examples: • By pressing the key RPM/RCF the display „rpm/rcf“ is now activated and you can setup the respective option either with the potentiometer or by pressing the key up/down. Attention: Please do not adjust any other centrifuge types than the mentioned one on the type label of the unit.

  • Page 27: Submenu Adjustment/Correction Of The Imbalance Cut Off Value

    MAINTENANCE FC5916/FC5916R Service Manual • By pressing the key RPM/RCF the display „rpm/rcf“ is now activated and you can setup the respective option with the potentiometer. • As we have already mentioned in the beginning this letters will appear when you switch on the unit during the normal operation.

  • Page 28: Submenu Activating/Deactivating Of The Electronical Imbalance

    MAINTENANCE FC5916/FC5916R Service Manual Attention: After all points have been reviewed and/or set up, you have to press shortly the key Start to store all parameters. Otherwise the setups were all for nothing. If the storage has been successful in the display „rpm/rcf“ the value of the imbalance sensor and the word „StorE“...

  • Page 29: Maintenance / Repair Procedures

    MAINTENANCE FC5916/FC5916R Service Manual 3 MAINTENANCE / REPAIR PROCEDURES WARNING: Electrical shock hazards exist within the housing. The housing should only be opened by authorized and qualified personnel. Remove all power connections to the unit before opening. WARNING: After performing any kind of assembling work, please make...
  • Page 30 MAINTENANCE FC5916/FC5916R Service Manual Replacing the incremental shaft encoder • Remove the cap on top of the incremental shaft encoder. • With a socket wrench you can loosen the fastening nut, now. • Loosen all electrical contacts to the shaft encoder on the back of the front housing.

  • Page 31: Removing The Housing And The Lid Gasket Glued

    MAINTENANCE FC5916/FC5916R Service Manual Replacing the foil keyboard • Remove the incremental shaft encoder and the display. • Peel off the defective foil keyboard and clean the remaining glued joints. • Glue the new foil keyboard precisely in the recess.

  • Page 32: Removing The Lid

    MAINTENANCE FC5916/FC5916R Service Manual Removing the lid • Remove the control panel and housing as described in chapter 3.1 and 3.2. • Open the lid as wide as possible. • Hold the lid with one hand and remove the fixing nuts of the hinges.

  • Page 33: Removing The Hinges

    MAINTENANCE FC5916/FC5916R Service Manual Removing the hinges • Remove the retaining ring (1) at the hinge bolt (2) and push it out. • Loosen the looking nut (3) end remove the screw (4) and the sleeves (5). • Re-assemble the lid in reverse order. Please use a new looking nut (3).

  • Page 34: Replacing The Motor And The Rotor Sensor

    MAINTENANCE FC5916/FC5916R Service Manual Replacing the motor and the Rotor Sensor • Remove the screws of the motor covering. • Remove the screws of the Rotor Sensor. Remove Remove • Remove the lower covering of the front housing as described in chapter 3.1.
  • Page 35 MAINTENANCE FC5916/FC5916R Service Manual • Remove the ground cable from the ground plate • Remove the screws of the motor fixing Remove • Remove the connection cables leading to the motor on the control board and on the frequency converter.

  • Page 36: Replacing The Fan

    MAINTENANCE FC5916/FC5916R Service Manual Replacing the motor rubber mounts • Remove the motor as described above. • Tip the device carefully on a soft surface to the back and remove the six screws of the ground plate Remove • Remove the hexagonal metal plate and place it on a soft grounding.

  • Page 37: Replacing The Power Board

    MAINTENANCE FC5916/FC5916R Service Manual • Remove the fixing screws of the van and remove it. • Replace the van and connect the wires. Reassemble the unit in reverse order. Remove Remove Replacing the power board • Remove the front cover as described in chapter 3.1.

  • Page 38: Checkup The Imbalance Sensor

    MAINTENANCE FC5916/FC5916R Service Manual Remove • ATTENTION: Before placing a new converter into the unit, put some heat conducting paste onto the fixing surface. • Re-assemble the unit in reverse order. Checkup the imbalance sensor • From software version 1.60 it is possible to adjust/correct the imbalance value.
  • Page 39 MAINTENANCE FC5916/FC5916R Service Manual Mechanic micro switch: Replacing the imbalance micro switch • Remove the front cover as described in chapter 3.1. • Remove the housing. • Remove all defective parts as imbalance micro switch, angles or spring plates. •...

  • Page 40: Replacing The Control Board

    MAINTENANCE FC5916/FC5916R Service Manual 3.10 Replacing the control board • Remove the front cover as described in chapter 3.1. • Remove all electrical connections on the control board. • Remove the 4 screws and remove the control board out of the unit.

  • Page 41: Replacing The The Loudspeaker

    MAINTENANCE FC5916/FC5916R Service Manual 3.12 Replacing the the loudspeaker • Remove the front cover as described in chapter 3.1. • Remove all electrical connections on the control board Remove • Go with a flat, sharp item (knife or screwdriver) under the signal transmitter and lift it up with slight efforts.
  • Page 42 MAINTENANCE FC5916/FC5916R Service Manual Microswitch for start closing the lid Microswitch for opening operation Microswitch for closing operation • Keep attention through adjustment of the lid lock, that the lid lies straight and continuous on the lid sealing. After adjustment tighten the screw well.

  • Page 43: Replacing The Temperature Sensor (Fc5916R Only)

    MAINTENANCE FC5916/FC5916R Service Manual 3.14 Replacing the temperature sensor (FC5916R only) • Remove the front cover as described in chapter 3.1. • Remove the electrical supply on the control board. • Remove the motor rubber covering by pulling it out simply.

  • Page 44: Refrigeration System (Fc5916R Only)

    MAINTENANCE FC5916/FC5916R Service Manual 3.15 Refrigeration system (FC5916R only) CAUTION: Only certified/qualify service personal should be performing the repair and service of the refrigeration system. Functional description of the refrigeration system The expansion valve regulates how much refrigerant is being led to the evaporator. The compressor makes the refrigerant available in the collective dryer.
  • Page 45 MAINTENANCE FC5916/FC5916R Service Manual Emptying and filling the refrigeration system (refrigerant R 452a) For this performance you need a refrigerant suction plant with container, a vacuum pump, a vacuum measuring device, a measuring device for refrigerants and a manometer combination.
  • Page 46 MAINTENANCE FC5916/FC5916R Service Manual...

  • Page 47: Trouble Shooting

    MAINTENANCE FC5916/FC5916R Service Manual 4 TROUBLE SHOOTING Error messages: Cause / Solution Preface: The error messages are listed to help localize possible errors faster. The diagnosis referred to in this chapter may not always be the case, as they are only theoretically occurring errors and solutions.

  • Page 48: Description Of The Error Message System

    MAINTENANCE FC5916/FC5916R Service Manual 4.2.2 Description of the error message system The error message is shown in the "Time/Prog" display. At the same time the word “error 02“ is indicated in the display. 4.2.3 Errors that may be indicated in the LCD display Error No.
  • Page 49 MAINTENANCE FC5916/FC5916R Service Manual (Position request not frequency converter is defective, control unit is understood at the start) defective. Communication with At revision no.1 it could be, that the frequency frequency converter relay is defective, cable break, plug is loosen...

  • Page 50: Maintenance

    MAINTENANCE FC5916/FC5916R Service Manual 5 MAINTENANCE Service and maintenance 5.1.1 Maintenance and cleaning Maintenance: Maintenance of the centrifuge is confined to keeping the rotor, the rotor chamber and the rotor accessories clean as well as to regularly lubricating the rotor insert bolts of a swing out rotor (if available).

  • Page 51: Cleaning And Disinfection Of The Unit

    MAINTENANCE FC5916/FC5916R Service Manual Connect the unit to the power supply, after the equipment is completely dry. Do not carry out disinfection with UV-, beta- and gamma-raysor other high energy radiation. Metal rotors can be autoclaved. Rotor lid and adapters can also be autoclaved (max. 121° C, 20 min).

  • Page 52: Glass Breakage

    MAINTENANCE FC5916/FC5916R Service Manual Attention: The sterilization time of 20 min. must not be exceeded. Sterilization again and again will cause reduction of the mechanical resistance of the plastic material Before the autoclaving the PP-rotor and adapter must thoroughly be cleaned to avoid the burning in of dirty residues.
  • Page 53 ™ Registered trademark of Ohaus Corporation. The information contained in this manual is believed to be accurate at the time of publication, but Ohaus Corporation assumes no liability arising from the use or misuse of this material. Reproduction of this material is strictly prohibited.

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