Thermo Scientific 8920 Operating Manual
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Thermo Scientific 8920 Operating Manual

Thermo Scientific 8920 Operating Manual

Ult upright freezer
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Thermo Scientific
Revco
®
ExF -86C ULT Upright Freezer
Operating Manual 7048920 Rev. 2
Visit us online to register your warranty
www.thermoscientific.com/labwarranty

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Summary of Contents for Thermo Scientific 8920

  • Page 1 Thermo Scientific Revco ® ExF -86C ULT Upright Freezer Operating Manual 7048920 Rev. 2 Visit us online to register your warranty www.thermoscientific.com/labwarranty...
  • Page 2 Catalog Capacity Voltage/ Description Quantity Model Model Number Number (cu ft) Number (cu ft) 122005 2 (4 DD) ExF24086V 8920 230/50 ExF24086SSV 6420 230/50 380520 Neoprene Cap ExF24086D 8921 230/60 ExF24086SSD 6421 230/60 510016 ¼-20 x 5½” Bolt 2 ExF24086SSA...
  • Page 3 Registration: This medical application is considered a Class I medical device by the FDA. This product is classified as product code – JRM, regulation number 862.2050 and is considered a Class 1 device, 510(K) exempt. ©2014 Thermo Fisher Scientific. All rights reserved. Revco ExF Thermo Scientific...
  • Page 4 European Country, and this product should be disposed of or recycled through them. Further information on Thermo’s compliance with this directive, the recyclers in your country and information on Thermo Scientific products will be available at www.thermofisher.com. Always use the proper protective equipment (clothing, gloves, goggles, etc.) 4 Always dissipate extreme cold or heat and wear protective clothing.
  • Page 5 We can also provide you with a quotation on our Extended Warranty for your Thermo Scientific products. Whatever Thermo Scientific products you need or use, we will be happy to discuss your applications. If you are experiencing technical problems, working together, we will help you locate the problem and, chances are, correct it yourself...over the telephone without a service...

  • Page 6: Table Of Contents

    Check Battery(s) ........4-5 PREVENTIVE MAINTENANCE ......4-6 Thermo Scientific Revco ExF...
  • Page 7 First Aid ...........C - 1 Revco ExF Thermo Scientific...

  • Page 8: Installation And Start-Up

    Optional Back Up System Controls Temperature Recorder (Optional) Figure 1-1. Freezer Front View Components • Control panel - keypad, displays and indicators • BUS (Optional Back Up System) control panel • Optional temperature recorder or datalogger Thermo Scientific Revco ExF...
  • Page 9 Power switch (mains disconnect) Shelf Bracket Optional Miscellaneous Accessories Probe Optional - Recorder Probe/Datalogger Probe Sealant Control RTD/Redundant Type T (Caution: This is a critical seal. Thermocouple Probe Seal must be maintained.) Figure 1-3. Chamber Probe(s) Revco ExF Thermo Scientific...
  • Page 10 Battery mounting bracket Freezer battery and optional BUS battery Figure 1-5. Battery(s) location and switch • Battery mounting bracket(s) • Battery power switch (freezer and BUS) • Freezer battery • Optional BUS battery • Freezer filter location Thermo Scientific Revco ExF...

  • Page 11: Control Panel Keys, Displays, Indicators

    Silence - Silences the audible alarm. See Section 4 for alarm ringback times. • Alarm Panel - indicates the current alarm condition. • Up and Down Arrows - Increases or decreases values, toggles between choices. • Enter - Stores the value into memory Revco ExF Thermo Scientific...

  • Page 12: Operation Of The Keypad

    Locate the freezer on a firm, level surface in an area with an ambient temperature between 18°C and 32°C. Provide ample room to reach the mains disconnect switch (power switch) located on the rear of the freezer. Thermo Scientific Revco ExF...

  • Page 13: Install Wall Bumpers

    IMPORTANT USER INFORMATION aution! Stored product should be protected by a redundant 24 hour/day monitoring system with alarm capability. An interconnect jack and thermocouple are installed for centralized monitoring, should on-board system fail. Figure 1-8. Remote Alarm Contacts Revco ExF Thermo Scientific...

  • Page 14: Connect Unit To Electrical Power

    36 hours to charge at initial start-up. A “Low Battery” alarm may occur until the batteries are fully charged. Should a power failure occur during the initial start-up period, the electronics will have limited operation. Thermo Scientific Revco ExF...

  • Page 15: Freezer Start-Up

    Note If the set point is changed and the low temperature and high temperature alarms are set 10° from the set point, the alarm set points will be adjusted automatically to maintain a distance of at least 10° from set point. Revco ExF Thermo Scientific...

  • Page 16: Set Low Temperature Alarm

    4. Press the Mode key until the Run indicator lights for Run mode If no control keys are pressed, the freezer will automatically return to RUN mode after 5 minutes. Note The low alarm set point must be set at least 5°C from the control set point. Thermo Scientific Revco ExF...

  • Page 17: Run Mode

    In addition, the Run mode allows display of the high stage heat exchange temperature. This information scrolls by pressing the up or down arrow keys. The display returns to the operating temperature in 10 seconds if no keys are pressed. 1-10 Revco ExF Thermo Scientific...

  • Page 18: Calibrate

    During calibration, the temperature display will not be available. If no keys are pressed for approximately five minutes while in calibration mode, the system will reset to Run mode. Thermo Scientific Revco ExF...

  • Page 20: Alarms

    High Stage Failure 0 min. 15 min. Micro Board Failure 0 min. 15 min. All alarm delays and ringback times are ±30 seconds. * The automatic battery test runs immediately on power-up, then every 8 hours thereafter. Thermo Scientific Revco ExF...

  • Page 21: Probe Failure Alarm

    If an error is detected with the condenser probe, there is no impact on the performance of the freezer; however, the hot condenser alarm may also occur. Contact the Technical Services department or your local distributor. Revco ExF Thermo Scientific...
  • Page 22 Description: This condition indicates that the heat exchange sensor has failed to produce a valid reading for >12 consecutive Er03 reads (~60 seconds). Response: The display will show “Er03” only when the button sequence to read the heat exchange sensor is depressed. Thermo Scientific Revco ExF...
  • Page 23 (Four dashes) Description: Communication between the micro board and the display board has been lost. Under this condition, the visual ---- in display alarm flashes along with dashes in the temperature display (----). Contact Technical Services. Revco ExF Thermo Scientific...

  • Page 24: Maintenance

    1. Open the front lower door by grasping the bottom left corner. 2. Using a vacuum cleaner, exercising care to not damage the condenser fins, clean the condenser. Depending upon environmental conditions, the condenser may need to be cleaned more frequently. Thermo Scientific Revco ExF...

  • Page 25: Clean Water-Cooled Condenser

    8. Add and circulate a passivating liquid for corrosion inhibition of plate surfaces. 9. Drain this liquid. 10. Rinse with fresh water and drain. 11. Reconnect the water supply and fill the unit. 12. Return to service. Revco ExF Thermo Scientific...

  • Page 26: Defrost Chamber

    The door gasket should be cleaned monthly, minimum. Using a soft cloth, remove any frost build-up from the gasket and door(s). The door gasket may need to be cleaned more frequently if dirt or excessive frost build-up prevents the door from closing properly. Thermo Scientific Revco ExF...

  • Page 27: Vacuum Relief Port

    Warning Failure to maintain the vacuum relief port may result in excessive ice build up inside the tube, clogging the port, and inability to open the door. The vacuum relief port may need to be cleaned more often with frequent door openings and high humidity environments. Revco ExF Thermo Scientific...

  • Page 28: Replace Battery(S)

    6. If the voltage reads less than 10.8 volts, replace the battery. If above 10.8, re-install as previously. 7. Turn the battery power switch to Standby mode ( ). 8. Close lower panel door. Thermo Scientific Revco ExF...

  • Page 29: Preventive Maintenance

    Locate the freezer away from drafts or heating/cooling vents • Keep the number of door openings to a minimum • Minimize the length of time door is open • Make sure door latches securely after opening Revco ExF Thermo Scientific...

  • Page 30: Factory Installed Options

    5. Remove the two Phillips head screws securing the metal bracket on the vent stack assembly. 6. Install the vent stack through the opening and secure it to the top of the freezer, using screws. Thermo Scientific Revco ExF...
  • Page 31 Section 5 Factory Installed Options Install Vent Stack, Solenoid and Injection (continued) Figure 5-1. Injection Assembly Figure 5-2. Vent Stack Assembly Revco ExF Thermo Scientific...

  • Page 32: Install Temperature Probe

    3. Tap #8-32 the two pre-punched holes located on the interior left wall of the freezer. Mount the bracket. Figure 5-4 shows the Back-Up probe mounted on the interior left side wall of the freezer. Figure 5-4. Mounted probe clip Thermo Scientific Revco ExF...

  • Page 33: Connect Probe/Solenoid Harness

    (no injection occurs). This light stays on until the unit is below BUS setpoint. b. The Low Battery indicator may also illuminate. 5. Turn the battery switch to Standby mode ( ) to charge both batteries. Revco ExF Thermo Scientific...

  • Page 34: Bus Control Panel

    The solenoid engaged indicator should light. If the Low Battery indicator lights during the test, replace the BUS battery. Note Solenoid will not engage if door is open. Thermo Scientific Revco ExF...

  • Page 35: Set Optional Bus Set Point

    (See Section 1 - “Setting the High Temperature Alarm). If the back-up system is installed with CO , then -65°C is the coldest BUS set point that can be used (if the cabinet set point is -75°C or colder). Revco ExF Thermo Scientific...

  • Page 36: Test Bus Operation

    3. Slowly disconnect the fitting assembly from the supply (in the event that any gas remains in the line). The following section describes the set up and operation of the optional Chart Recorder chart recorder. Figure 5-7. Recorder Details Thermo Scientific Revco ExF...

  • Page 37: Recorder Calibration

    Note The felt-tip pen on the recorder requires periodic replacement. The ink will appear to fade before replacement becomes necessary. Additional pen tips may be purchased from Thermo. Revco ExF Thermo Scientific...

  • Page 38: Water-Cooled Condenser

    Water Temperature Range Not to exceed 29.4C (85F) Inlet Connection 0.5” compression Outlet Connection 0.5” compression Flow Rate Required 3.0 gallons (11.4 liters) per minute 1.0 gallon (3.8 liters) per minute Drain Required No (return line is required) Thermo Scientific Revco ExF...

  • Page 39: Specifications

    Specifications Section 6 ExF24086V (8920/ ExF24086D (8921)/ ExF24086A (8922/ Number (Model) ExF24086SSV (6240) ExF24086SSD (6421) ExF24086SSA (6422) Temperature Range -50°C(-58°F) to -86°C(-123°F) in an 18C to 32C * (64.4F to 89.6F) ambient 33.3”W x 77.9” H x 32.9” F-B 33.3”W x 77.9” H x 32.9” F-B 33.3”W x 77.9”...
  • Page 41 ±10 Operating Range: 208VAC-240VAC Operating Range: 208VAC-240VAC 15 Amp Dedicated Circuit, 15 Amp Dedicated Circuit, Breaker Requirements 15 Amp Time Delay Breaker 15 Amp Time Delay Breaker Shipping Weight 1090 lbs. (494kg) 1090lbs. (494kg) Revco ExF Thermo Scientific...

  • Page 42: Double Door Units

    Operating Range: 208VAC-230VAC Operating Range: 208VAC-240VAC 15 Amp, Dedicated Circuit, 15 Amp, Dedicated Circuit, Breaker Requirements 15 Amp Time Delay Breaker 15 Amp Time Delay Breaker Shipping Weight 763 lbs. (346 kg) 900 lbs. (408 kg) Thermo Scientific Revco ExF...
  • Page 43 2500V for a 230V supply and 1500V for a 120V supply. Pollution degree describes the amount of conductive pollution present in the operating environment. Pollution degree 2 assumes that normally only non-conductive pollution such as dust occurs with the exception of occasional conductivity caused by condensation. Revco ExF Thermo Scientific...
  • Page 44 Section 7 Parts Exploded Drawing Heat Exchanger Upright Freezer 902-205-1-B Rev. 0 Page 1 of 1 Thermo Scientific Revco ExF...
  • Page 45 Section 7 Parts Exploded Drawing Upright Freezer Cabinet Assembly 902-200-1-B Rev. 2 Page 1 of 2 Revco ExF Thermo Scientific...
  • Page 46 Section 7 Parts Exploded Drawing Upright Freezer Cabinet Assembly 902-200-1-B Rev. 2 Page 2 of 2 Thermo Scientific Revco ExF...
  • Page 47 Section 7 Parts Exploded Drawing Single Door Assembly ULT Upright Freezer (R - H - -86C) 8920-201-1-B Rev. 1 Page 1 of 2 Revco ExF Thermo Scientific...
  • Page 48 Section 7 Parts Exploded Drawing Single Door Assembly ULT Upright Freezer (R - H - -86C) 8920-201-1-B Rev. 1 Page 2 of 2 Thermo Scientific Revco ExF...
  • Page 49 Section 7 Parts Exploded Drawing Model: 900 and 5900 Series UR Freezer Assembly 991-200-2-D Rev. 3 Page 1 of 2 Revco ExF Thermo Scientific...
  • Page 50 Section 7 Parts Exploded Drawing Model: 900 and 5900 Series UR Freezer Assembly 991-200-2-D Rev. 3 Page 2 of 2 Thermo Scientific Revco ExF...
  • Page 51 Section 7 Parts Exploded Drawing Double Door Assembly Upright Freezer 902-202-1-B Rev. 7 Page 1 of 2 Revco ExF Thermo Scientific...
  • Page 52 Section 7 Parts Exploded Drawing Double Door Assembly Upright Freezer 902-202-1-B Rev. 7 Page 2 of 2 Thermo Scientific Revco ExF...
  • Page 53 Section 7 Parts 7-10 Revco ExF Thermo Scientific...
  • Page 54 Section 7 Parts Thermo Scientific Revco ExF 7-11...
  • Page 55 Section 7 Parts Exploded Drawing 230V Relay Enclosure - Freezers 902-204-1-B Rev 1 Page 1 of 2 7-12 Revco ExF Thermo Scientific...
  • Page 56 Section 7 Parts Exploded Drawing 230V Relay Enclosure - Freezers 902-204-1-B Rev 1 Page 2 of 2 Thermo Scientific Revco ExF 7-13...
  • Page 57 Section 7 Parts Exploded Drawing 120V Relay Enclosure - Freezers 902-204-2-B Rev. 1 Page 1 of 2 7-14 Revco ExF Thermo Scientific...
  • Page 58 Section 7 Parts Exploded Drawing 120V Relay Enclosure - Freezers 902-204-2-B Rev. 1 Page 2 of 2 Thermo Scientific Revco ExF 7-15...
  • Page 59 Section 7 Parts Exploded Drawing Upright Freezer Start Component Relay Enclosure Assembly 120320-01-2-B Rev. 7 Page 1 of 2 7-16 Revco ExF Thermo Scientific...
  • Page 60 Section 7 Parts Exploded Drawing Upright Freezer Start Component Relay Enclosure Assembly 120320-01-2-B Rev. 7 Page 2 of 2 Thermo Scientific Revco ExF 7-17...

  • Page 62: Refrigeration Schematics

    Section 8 Refrigeration Schematics Thermo Scientific Revco ExF...
  • Page 63 Section 8 Refrigeration Schematics Revco ExF Thermo Scientific...
  • Page 64 Section 8 Refrigeration Schematics Thermo Scientific Revco ExF...
  • Page 65 Section 8 Refrigeration Schematics Revco ExF Thermo Scientific...
  • Page 66 Section 8 Refrigeration Schematics Thermo Scientific Revco ExF...
  • Page 67 Section 8 Refrigeration Schematics Revco ExF Thermo Scientific...
  • Page 68 Section 8 Refrigeration Schematics Thermo Scientific Revco ExF...
  • Page 69 Section 8 Refrigeration Schematics Revco ExF Thermo Scientific...

  • Page 70: Electrical Schematics

    Section 9 Electrical Schematics Thermo Scientific Revco ExF...
  • Page 71 Section 9 Electrical Schematics Revco ExF Thermo Scientific...
  • Page 72 Section 9 Electrical Schematics Thermo Scientific Revco ExF...
  • Page 73 Section 9 Electrical Schematics Electrical Schematic Model: ULT -86C 120V 60Hz Upright Freezers 903-70-2-D Rev. 6 Page 1 of 3 Revco ExF Thermo Scientific...
  • Page 74 Section 9 Electrical Schematics Electrical Schematic Model: ULT -86C 120V 60Hz Upright Freezers 903-70-2-D Rev. 6 Page 2 of 3 Thermo Scientific Revco ExF...
  • Page 75 Section 9 Electrical Schematics Electrical Schematic Model: ULT -86C 120V 60Hz Upright Freezers 903-70-2-D Rev. 6 Page 3 of 3 Revco ExF Thermo Scientific...

  • Page 76: Warranty

    Section 10 Warranty Information Thermo Scientific Revco ExF 10-1...
  • Page 77 Section 10 Warranty Information 10-2 Revco ExF Thermo Scientific...

  • Page 78: Appendix Handling Liquid Nitrogen

    When handling liquid in open containers, it is advisable to wear high-top shoes. Trousers (which should be cuffless if possible) should be worn outside the shoes. Thermo Scientific Revco ExF A -1...
  • Page 79 Use only the loose- fitting necktube core supplied or one of the approved accessories for closing the necktube. Check the unit periodically to be sure that venting is not restricted by accumulated ice or frost. A -2 Revco ExF Thermo Scientific...
  • Page 80 Disposal of liquid nitrogen should be done outdoors in a safe place. Pour the liquid slowly on gravel or bare earth where it can evaporate without causing damage. Do not pour the liquid on pavement. Thermo Scientific Revco ExF A -3...

  • Page 81: Handling Liquid Co

    Disposal of liquid CO should be done outdoors in a safe place. Pour the liquid slowly on gravel or bare earth where it can evaporate without causing damage. Do not pour the liquid on pavement. A -4 Revco ExF Thermo Scientific...

  • Page 82: First Aid

    108° F. Under no circumstance should the water be over 112° F, nor should the frozen part be rubbed either before or after rewarming. The patient should neither smoke nor drink alcohol. Thermo Scientific Revco ExF A -5...
  • Page 83 Appendix A Handling Liquid Nitrogen A -6 Revco ExF Thermo Scientific...
  • Page 84 Thermo Fisher Scientific 401 Millcreek Road Marietta, Ohio 45750 United States www.thermofisher.com...

This manual is also suitable for:

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