Thermo Scientific MBF-700 Installation, Operation And Service Manual
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Thermo Scientific MBF-700 Installation, Operation And Service Manual

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MBF-700
Refrigeration System
Installation, Operation and
Service Manual
325152H01
Rev. E
July 2015
Visit us online to register your warranty
www.thermoscientific.com/labwarranty

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Summary of Contents for Thermo Scientific MBF-700

  • Page 1 MBF-700 Refrigeration System Installation, Operation and Service Manual 325152H01 Rev. E July 2015 Visit us online to register your warranty www.thermoscientific.com/labwarranty...
  • Page 2 IMPORTANT Read this instruction manual. Failure to follow the instructions in this manual can result in damage to the unit, injury to operating personnel, and poor equipment performance. CAUTION All internal adjustments and maintenance must be performed by qualified service personnel. Material in this manual is for informational purposes only.
  • Page 3 Thermo Fisher Scientific Inc. provides this document to its customers with a product purchase to use in the product operation. This document is copyright protected and any reproduction of the whole or any part of this document is strictly prohibited, except with the written authorization of Thermo Fisher Scientific Inc.
  • Page 4 The MBF 700 described in this manual is a high performance unit which can be used for research and in situations that directly support medical applications. When the MBF-700 is used to support a medical application, it is an accessory to a medical device and is therefore considered as a medical device in its own right by the regulatory body (e.g.

  • Page 5: Table Of Contents

    Table Of Contents Table Of Contents Specifications ................1 Models ..................1 Exterior Dimensions ............1 Power Requirements ............1 LCO2 Backup System............1 Environmental Operating Conditions ........1 Refrigerant Charge............... 2 Oil Charge ................2 Safety Precautions..............3 Unpacking.................5 General Description ..............6 Construction .................6 Incoming Power Wiring ............8 Installation and Operation............9 Installation Checklist............
  • Page 6 Table Of Contents Vent .................42 Storage ................42 Troubleshooting ..............43 Failure Analysis..............48 Contactors and Relays............48 Compressor Motors, Three Phase ........48 Partial or Complete Loss of Refrigeration ......48 Checking Refrigerant Charge ..........49 Installing Gauges ..............49 Leak Testing, Repairing and Charging – an Overview ..50 Repair Procedures ..............53 Compressor Replacement ..........53 Backflush Procedure ............56...
  • Page 7 Table Of Contents E2 MODBUS Network Wiring ..........99 ECT MODBUS Networking to E2s......... 101 Default Setting Values .............107 Dixell Parameter Table ............112...

  • Page 8: Specifications

    Specifications 1 Specifications 1.1 Models The following MBF-700 models are described in this manual: Model Number Revision Level MBF700LSAO-E Rev. 20 MBF700LSAW-E Rev. 20 1.2 Exterior Dimensions Height 47.5 in (121 cm) Width 121 in (307 cm) Depth 35.3 in (90 cm) Weight 1510 lbs (685 kg) –...

  • Page 9: Refrigerant Charge

    1.6 Refrigerant Charge Stage 1 R404a (50 oz) Stage 2 R290 (1.5 oz), R508b (20.3 oz) 1.7 Oil Charge Stage 1 50 oz POE RL32H Stage 2 65 oz Alkyl Benzene Zerol Installation, Operation and Service Manual Thermo Scientific MBF-700 Refrigeration System...

  • Page 10: Safety Precautions

    Before installing, using or maintaining this product, please be sure to read this manual and product warning labels carefully. Failure to follow these instructions may cause this product to malfunction, which could result in injury or damage. Thermo Scientific MBF-700 Refrigeration System Installation, Operation and Service Manual...
  • Page 11 Never connect the unit to overloaded power sources. WARNING: Disconnect the unit from all power sources before cleaning, troubleshooting, or performing other maintenance on the product or its controls. Installation, Operation and Service Manual Thermo Scientific MBF-700 Refrigeration System...

  • Page 12: Unpacking

    When submitting a claim for shipping damage, request that the carrier inspect the shipping container and equipment. CAUTION: Do not discard the sub lids. They are necessary for the operation of the unit. Thermo Scientific MBF-700 Refrigeration System Installation, Operation and Service Manual...

  • Page 13: General Description

    The lid is held tightly closed by means of cam locks having provision for a user supplied padlock. Durable corrosion protection is provided by an electrostatically applied epoxy fused powder coating over cold rolled steel. Installation, Operation and Service Manual Thermo Scientific MBF-700 Refrigeration System...
  • Page 14 When set to alternate between system “A” and system “B”, refrigeration is applied to the freezer chamber alternating between systems on each cycle. Figure 2. Cabinet Dimensional Drawing Thermo Scientific MBF-700 Refrigeration System Installation, Operation and Service Manual...

  • Page 15: Incoming Power Wiring

    Figure 3. Incoming Power Wiring Note that the compressor is not rotation-specific. The contactor is wired as “L L L”. WARNING: Only a licensed electrician is to make these connections. Installation, Operation and Service Manual Thermo Scientific MBF-700 Refrigeration System...

  • Page 16: Installation And Operation

    Installation and Operation 5 Installation and Operation WARNING: The MBF-700 is intended to be hard-wired upon installation. Use with quick-disconnect plugs is not approved. The unit must be installed with proper circuit breakers and overcurrent protection, and installation must be done by a licensed electrician in accordance with all applicable building codes and regulations.

  • Page 17: Responsibilities

    Watch the system operation indicator light. It should not be showing the same system always operating. For instance, when system A has been operating and shuts off, system B should start on the next control call for cooling. Installation, Operation and Service Manual Thermo Scientific MBF-700 Refrigeration System...
  • Page 18 On Using Defrost the cabinet if frost or ice build-up exceeds 1/4” thickness: remove product, turn power key switch Off, leave unit open 48 hours, remove moisture, restart unit. Thermo Scientific MBF-700 Refrigeration System Installation, Operation and Service Manual...

  • Page 19: Control Panel

    7. System “A” indicator light. “ON” when system “A” 1st stage running. 8. Frame heater switch. Operates breaker strip condensate heater. 9. Battery meter. Displays state of battery charge when button is pressed. Installation, Operation and Service Manual Thermo Scientific MBF-700 Refrigeration System...

  • Page 20: Loading Instructions

    Installation and Operation 5.4 Loading Instructions The MBF-700 freezer is designed to be used for long-term storage and is not intended to be operated as a blast freezer. The unit has dual refrigeration systems primarily to provide redundant reliability in the event of a catastrophic failure of one side.
  • Page 21 For time-critical freezing operations it is recommended that the user independently test and validate their loading procedure to ensure satisfactory results. Installation, Operation and Service Manual Thermo Scientific MBF-700 Refrigeration System...

  • Page 22: Options And Accessories

    6 Options and Accessories 6.1 Water-cooled The MBF-700 can be purchased with air-cooled condenser, water-cooled condenser, or both. If purchased with water-cooled condensers, there are Condensing Unit two water supply and two water discharge connections to be made at the...
  • Page 23 (located on top of the valve) until a head pressure of 195 psig is measured. Clockwise rotation of the adjusting stem lowers the head pressure; counterclockwise rotation raises the head pressure. Figure 5. Water-Cooled Condenser Connections Installation, Operation and Service Manual Thermo Scientific MBF-700 Refrigeration System...

  • Page 24: Installing The Remote Alarm Connector

    The pin configuration is shown in the figure below. Figure 6. Remote Alarm Pin Configuration The contacts will trip in the event of a power outage, high temperature alarm or low temperature alarm. Thermo Scientific MBF-700 Refrigeration System Installation, Operation and Service Manual...
  • Page 25 Each rack holds 16 boxes. A full set for the freezer would require thirty-four (34) #4027 racks. Figure 7. Accessory Storage Rack Cold racks present a frostbite hazard. Do not handle with bare hands. Use insulated gloves. Installation, Operation and Service Manual Thermo Scientific MBF-700 Refrigeration System...

  • Page 26: Liquid Co2 (Lco2) Backup System

    8. Turn on the LCO valve. 9. Refer to the Backup System Owners Manual for operation instructions. Note LCO backup systems are typically built with a relief valve set for 1,300 psig. Thermo Scientific MBF-700 Refrigeration System Installation, Operation and Service Manual...

  • Page 27: Lco 2 Control System Battery Condition

    Then feed the leads through the switch hole Installation, Operation and Service Manual Thermo Scientific MBF-700 Refrigeration System...
  • Page 28 If there is no discharge, check to see that the wires are fastened securely to the lid switch and that the switch plunger is actually depressed. Thermo Scientific MBF-700 Refrigeration System Installation, Operation and Service Manual...

  • Page 29: Liquid Co

    CAUTION: Do not turn off the LCO supply trapping liquid in the supply line. Any rise in temperature will cause a rapid rise of pressure that will rupture the protective disk in the control unit. Installation, Operation and Service Manual Thermo Scientific MBF-700 Refrigeration System...
  • Page 30 Liquid CO2 (LCO2) Backup System Figure 8. LCO Backup System Thermo Scientific MBF-700 Refrigeration System Installation, Operation and Service Manual...

  • Page 31: Cobex 7-Day Circular Chart Temperature Recorder

    Note Recorder may not respond until the system reaches temperatures within the recorder’s range. This should complete operator setup. Additional information is provided for maintenance and troubleshooting as required. Installation, Operation and Service Manual Thermo Scientific MBF-700 Refrigeration System...

  • Page 32: Maintenance

    (2) screws at the top of the arm. Slip the pen cartridge out and remove the “U” shaped clip tab from the pen. Discard the old pen. Insert the clip tab into a new pen and then re-fasten to the pen arm. Thermo Scientific MBF-700 Refrigeration System Installation, Operation and Service Manual...
  • Page 33 LED indicator will glow continuously and the pen arm will move to begin recording temperature. Note The pen does not begin to move until the button is held for 5 seconds. Installation, Operation and Service Manual Thermo Scientific MBF-700 Refrigeration System...
  • Page 34 2. Measures cabinet center air temperature with a calibrated temperature monitor. 3. Compare recorder temperature to center air temperature. If necessary, adjust recorder by pressing the left (#1) and right (#2) chart buttons. Thermo Scientific MBF-700 Refrigeration System Installation, Operation and Service Manual...
  • Page 35 1 flash -40 to +25 °C • 2 flashes -115 to+50 °C • 3 flashes -200 to 0 °C • 4 flashes 0 to +60 °C (newer units only) Push #3 again. Installation, Operation and Service Manual Thermo Scientific MBF-700 Refrigeration System...
  • Page 36 2 flashes -115 to+50 °C • 3 flashes -200 to 0 °C • 4 flashes 0 to +60 °C(newer units only) Momentarily depress “Chart Change” button again. Not calibrated (see below) Thermo Scientific MBF-700 Refrigeration System Installation, Operation and Service Manual...
  • Page 37 If still 0.0v return/replace recorder. • >2.0 v = Replace recorder and probe. • If probe voltage is off by more than a factor of 2 then probe is faulty. Installation, Operation and Service Manual Thermo Scientific MBF-700 Refrigeration System...
  • Page 38 4 Flashes 0 to -+60 °C (newer units only) Pen Arm Displaced Pen Will Not Unscrew pen arm Come Completely Off Align pen arm with pen arm bracket Chart Recalibrate (see “Not Calibrated”) Thermo Scientific MBF-700 Refrigeration System Installation, Operation and Service Manual...
  • Page 39 Unscrew pen arm. Bend pen arm slightly downward. Reattach Recalibrate (“Not Calibrated”). Recorded Line Chart Loose Tighten chart knob. Attempt to turn chart counter-clockwise. If chart turns, tighten knob more. Installation, Operation and Service Manual Thermo Scientific MBF-700 Refrigeration System...

  • Page 40: Theory Of Operation

    9 Theory of Operation 9.1 Overview The MBF-700 utilizes alternately-operating redundant refrigeration systems to maintain -80 °C while extending unit’s life and providing safety in the event of a system failure. The electronic thermostat is backed up by an electromechanical thermostat in case of primary control failure. A liquid...

  • Page 41: Systems Description

    9.3 Systems Description 9.3.1 Refrigeration System The MBF-700 is equipped with identical and redundant cascade refrigeration systems: System “A” and System “B”. Since each is capable of maintaining the proper operating temperature inside the freezer, the product load will be protected if one system should fail.
  • Page 42 The solenoid valve opens and closes in response to a closed-loop electronic control system that monitors the freezer temperature. Thermo Scientific MBF-700 Refrigeration System Installation, Operation and Service Manual...
  • Page 43 When the cabinet temperature drops below the auxiliary temperature control setting only one system (“A” or “B”) will operate. Therefore, the flange is still kept dry even when the cabinet temperature is at ultra-cold condition. Installation, Operation and Service Manual Thermo Scientific MBF-700 Refrigeration System...

  • Page 44: Operation

    As can be seen, both first and second stages operate together to remove heat from products in a chain or cascade fashion. Thermo Scientific MBF-700 Refrigeration System Installation, Operation and Service Manual...
  • Page 45 A sequencing relay is used to provide this functionality. This mode of operation will equalize operating time of both refrigeration systems and is the standard mode of operation for the MBF-700. In the case of a temperature excursion above the setpoint of the secondary controller, it will energize whichever side is not currently being controlled by the primary controller demand signal.
  • Page 46 Off cycles can vary from 4 to 30 minutes. The system is protected against overloading through Thermo Scientific MBF-700 Refrigeration System Installation, Operation and Service Manual...
  • Page 47 The Backup Control thermostat has been provided to put both systems in operation if the cabinet temperature rises above its setpoint and to protect against failure of one refrigeration system or the primary controller. Installation, Operation and Service Manual Thermo Scientific MBF-700 Refrigeration System...

  • Page 48: Maintenance And Service

    Frost or “snow” will be the most apparent accumulation and it may be removed with a plastic scraper. If any hard ice has developed, do not chip it using metallic objects. Thermo Scientific MBF-700 Refrigeration System Installation, Operation and Service Manual...

  • Page 49: Lco 2 Vent

    Dry out the interior. Prop the lid open at least 6" and secure in this position. If water cooling has been used, the water lines of BOTH water cooled condensers must be blown out to prevent freezing. Installation, Operation and Service Manual Thermo Scientific MBF-700 Refrigeration System...

  • Page 50: Troubleshooting

    No audio alarm at power fail or Defective alarm loudspeaker. Replace loudspeaker. temperature fail. No remote alarm Check wiring between control board & remote alarm Defective wiring. function. terminal block. Thermo Scientific MBF-700 Refrigeration System Installation, Operation and Service Manual...
  • Page 51 If electrical checks are OK, try to start by disconnecting and exchanging any two compressor power leads. Defective starting components. Replace starting components. Stuck compressor. Install hard-start kit; if unsuccessful, replace compressor. Installation, Operation and Service Manual Thermo Scientific MBF-700 Refrigeration System...
  • Page 52 Oil separator failed to return oil to the Replace oil separator. compressor. 10. Staging control not closing to trigger 10. Slowly adjust staging control in 5C increments second stage compressor. until low stage Thermo Scientific MBF-700 Refrigeration System Installation, Operation and Service Manual...
  • Page 53 Defective alarm speaker. Replace alarm speaker. Defective wiring. Check wiring between control board & remote No remote alarm alarm terminal block. function. Defective board component. Replace control board. Installation, Operation and Service Manual Thermo Scientific MBF-700 Refrigeration System...
  • Page 54 All major failure modes are listed above. In cases where the particular fault is not listed, component level diagnostics must be performed. This may be accomplished using the parts list and component layout (refer to Appendix A). Thermo Scientific MBF-700 Refrigeration System Installation, Operation and Service Manual...

  • Page 55: Failure Analysis

    90 °F. In the case of a water cooled condenser, the water supply may have been interrupted. Installation, Operation and Service Manual Thermo Scientific MBF-700 Refrigeration System...

  • Page 56: Checking Refrigerant Charge

    If a leak is present in either stage, it will have to be found and repaired, a deep vacuum drawn on the system, and a recharge of refrigerant added. Thermo Scientific MBF-700 Refrigeration System Installation, Operation and Service Manual...

  • Page 57: Leak Testing, Repairing And Charging - An Overview

    Turn on the leak detector and when it is warmed up, set it for highest sensitivity. Move the probe slowly around each component and fitting until an audible signal is heard. Stop and decrease the sensitivity Installation, Operation and Service Manual Thermo Scientific MBF-700 Refrigeration System...
  • Page 58 Note The filter-drier must ALWAYS be replaced whenever the refrigeration system has been opened to atmosphere. Thermo Scientific MBF-700 Refrigeration System Installation, Operation and Service Manual...
  • Page 59 It is good practice to change the pump oil after each use, using the dry oil recommended by the pump manufacturer. The pump should be put away in a clean, dry condition ready for the next job. Installation, Operation and Service Manual Thermo Scientific MBF-700 Refrigeration System...

  • Page 60: Repair Procedures

    5. Attach the gauge manifold to the suction and discharge process tubes via saddle valves. 6. Recover, and dispose of, the refrigerant charge in accordance with current regulations. 7. Go to Step 8, REMOVE THE COMPRESSOR. Thermo Scientific MBF-700 Refrigeration System Installation, Operation and Service Manual...
  • Page 61 17. Close the vacuum pump inlet valve, leaving the pump running and watch the electronic micron gauge carefully. Note The vacuum gauge must be installed between the compressor and the pump shut-off valve to perform this check. Installation, Operation and Service Manual Thermo Scientific MBF-700 Refrigeration System...
  • Page 62 Gas will flow into the compressor crankcase. 19. Remove gauge manifold and service valves that were used to charge the system. This completes the installation of a replacement compressor. Thermo Scientific MBF-700 Refrigeration System Installation, Operation and Service Manual...

  • Page 63: Backflush Procedure

    4. Use the tubing cutter to remove the drier (item 24) from this compartment; this will allow direct access to inlet end of the capillary tube, which will become the evaporator outlet when backflushing. Installation, Operation and Service Manual Thermo Scientific MBF-700 Refrigeration System...
  • Page 64 8. Install a new drier in the access compartment. 9. Install new compressor as explained on page 43. Then evacuate and recharge the system using the following procedures. Thermo Scientific MBF-700 Refrigeration System Installation, Operation and Service Manual...

  • Page 65: Evacuation Procedure

    8. Shut of the nitrogen and allow the nitrogen to absorb system moisture for 15-20 minutes, then vent. 9. Open the micron gauge shut-off and let the pump run to a vacuum of 500 microns; shut off the pump. Installation, Operation and Service Manual Thermo Scientific MBF-700 Refrigeration System...
  • Page 66 10-11. • If gauge remains below 200 microns, valve off and remove micron gauge and vacuum pump. Charge system per the following procedures. Figure 11. Evacuation and Recharge Process Connections Thermo Scientific MBF-700 Refrigeration System Installation, Operation and Service Manual...

  • Page 67: Charging Procedure -- 1 St (High) Stage

    6. The Heat Exchange thermocouple should measure -35 °C to -46 °C. If not, adjust the TXV until the desired temperature is achieved. 13.5 Charging Required Equipment: Procedure 1. Refrigerant(s) -- 2 (Low) Stage 2. Electronic Scale 3. “T”-type Thermocouple Meter Installation, Operation and Service Manual Thermo Scientific MBF-700 Refrigeration System...
  • Page 68 13. Thermocouples #4 and #5 are on the evaporator outlet and should be within 2 °C of each other, and should be within 3 °F to 6 °F of thermocouple #3. If not, adjust the charge by adding R508b. Thermo Scientific MBF-700 Refrigeration System Installation, Operation and Service Manual...

  • Page 69: Temperature Calibration

    ‘B’ Evap Out is located inthe ‘B’ side compressor deck area. One for each ‘A’ and ‘B’ Side (2) TXV ‘TXV’ thermocoupleis located in the txv compartment of each ‘A’ and ‘B’ side. Installation, Operation and Service Manual Thermo Scientific MBF-700 Refrigeration System...

  • Page 70: Warranty

    Your local Thermo Scientific Sales Office is ready to help with comprehensive site preparation information before your equipment arrives. Printed instruction manuals carefully detail equipment installation, operation, and preventive maintenance.
  • Page 71 Your local Thermo Scientific Sales Office is ready to help with comprehensive site preparation information before your equipment arrives. Printed instruction manuals carefully detail equipment installation, operation, and preventive maintenance.

  • Page 72: Refrigeration System Data

    LOW PRESSURE CONTROL TX VALVE / CAPILLARY TUBE Sporlan EFS-1/2-SZ 22’ of .065" Charging Data Refrigerant June 2012 to Present R404a 50 oz Stage R290 1.5 oz Stage R508b 20.3 oz Thermo Scientific MBF-700 Refrigeration System Installation, Operation and Service Manual...

  • Page 73: Service Parts List

    Motor, Fan 50 Watt, 230 vac/1 0/50-60 hz 81475H03 Oil Separator, Temprite 44569H10 Relay, 3PDT, 12 VDC, 10 A Contacts 44569H07 Relay, 3PDT/240 VAC 325055H01 Sequencing Relay 325056H01 Sequencing Relay socket, 8-pin 69070H02 Switch, Key Installation, Operation and Service Manual Thermo Scientific MBF-700 Refrigeration System...
  • Page 74 Harness, Contactor-Compressor A1 326665H01 Harness, Compressor (A1 and B1) 326647H02 Harness, Contactor - Compressor A2 326647H03 Harness, Contactor - Compressor B1 326647H04 Harness, Contactor - Compressor B2 326516H01 12 V DC Relay Thermo Scientific MBF-700 Refrigeration System Installation, Operation and Service Manual...
  • Page 75 Sequencing Relay and Socket 8 (A1) Contactor, System “A”, 1 Stage 8 (A2) Contactor, System “A”, 2 Stage 8 (B1) Contactor, System “B”, 1 Stage 8 (B2) Contactor, System “B”, 2 Stage Installation, Operation and Service Manual Thermo Scientific MBF-700 Refrigeration System...
  • Page 76 Note Only one refrigeration system is shown. Both systems are identical and refrigerate cabinet independently. Item # Description Compressor Condenser Receiver Oil Separator Filter Drier Thermal Expansion Valve Inter stage Condenser Tank evaporator tubing Capillary Tube Filter-Drier Thermo Scientific MBF-700 Refrigeration System Installation, Operation and Service Manual...

  • Page 77: Temperature Conversion Table

    -46.7 -61.6 -21.1 21.2 93.2 -45.6 -58.0 -20.6 23.0 95.0 -44.4 -54.4 -20.0 24.8 96.8 -43.3 -50.8 -19.4 26.6 98.6 -42.2 -47.2 -18.9 28.4 100.4 -41.1 -43.6 -18.3 30.2 102.2 Installation, Operation and Service Manual Thermo Scientific MBF-700 Refrigeration System...

  • Page 78: Wiring Diagram

    Appendix A 16.4 230 V Wiring Diagram Thermo Scientific MBF-700 Refrigeration System Installation, Operation and Service Manual...

  • Page 79: Wiring Diagram

    Appendix A 16.5 12 V Wiring Diagram Installation, Operation and Service Manual Thermo Scientific MBF-700 Refrigeration System...

  • Page 80: Lco 2 Backup System Electrical Schematic

    Appendix A 16.6 LCO Backup System Electrical Schematic Thermo Scientific MBF-700 Refrigeration System Installation, Operation and Service Manual...

  • Page 81: Appendix B: Primary Controller

    Appendix B: Primary Controller 17 Appendix B: On the following pages are OEM instructions for the primary temperature Primary Controller controller, followed by a table of factory-set parameters and their default values. Installation, Operation and Service Manual Thermo Scientific MBF-700 Refrigeration System...

  • Page 82: Dixell Operating Manual

    • In case of applications in industrial environments, the use of main filters (our mod. FT1) in parallel with inductive loads could be useful. Thermo Scientific MBF-700 Refrigeration System Installation, Operation and Service Manual...

  • Page 83: Overview

    OFF when the temperature reaches the setpoint value again. Installation, Operation and Service Manual Thermo Scientific MBF-700 Refrigeration System...
  • Page 84 Ld1...Ld6 on workdays and in Sd1…Sd6 in holidays. Other parameters are used to control defrost cycles: its maximum defrost duration (MdF) and two defrost modes: time or controlled by the evaporator’s probe (P2P). Thermo Scientific MBF-700 Refrigeration System Installation, Operation and Service Manual...
  • Page 85 = SEt - Hy • oA1 cut out = SEt 18.3.7 Alarm Relay With oA1 = ALr, the relay 1-7 operates as an alarm relay. It is activated every time an alarm occurs. Installation, Operation and Service Manual Thermo Scientific MBF-700 Refrigeration System...

  • Page 86: Front Panel Commands

    (DOWN arrow key) To see the MIN stored temperature; in programming mode, it browses the parameter codes or decreases the displayed value. Thermo Scientific MBF-700 Refrigeration System Installation, Operation and Service Manual...
  • Page 87 Compressor enabled Flashing Anti-short cycle delay enabled Defrost enabled Flashing Drip time in progress An alarm is occurring Continuous cycle is running Energy saving enabled Light ON Auxiliary relay ON Installation, Operation and Service Manual Thermo Scientific MBF-700 Refrigeration System...

  • Page 88: Max And Min Temperature Memorization

    MIN Temperature Recorded maximum or minimum temperature is displayed. (rSt message will be displayed) 2. To confirm the operation, the rSt message starts blinking and the normal temperature will be displayed. Thermo Scientific MBF-700 Refrigeration System Installation, Operation and Service Manual...

  • Page 89: Main Functions

    3. To change the setpoint value, push the UP or DOWN arrow keys within 10 seconds. 4. To memorize the new setpoint value, push the SET key again or wait 10 seconds. Installation, Operation and Service Manual Thermo Scientific MBF-700 Refrigeration System...
  • Page 90 4. Press the SET key to display its value. 5. Use the UP or DOWN arrow keys to change its value. 6. Press SET to store the new value and move to the next parameter. Thermo Scientific MBF-700 Refrigeration System Installation, Operation and Service Manual...
  • Page 91 3. If a key is pressed more than 3 seconds, the PoF message will be displayed. To unlock the keyboard, press the UP and the DOWN arrow keys for more 18.6.9 To Unlock the Keyboard than 3 seconds until the Pon message displays. Installation, Operation and Service Manual Thermo Scientific MBF-700 Refrigeration System...

  • Page 92: Parameters

    (-12.0 to 12.0 °C; -120 to 120 °F) Third probe calibration (P3) Allows to adjust possible offset of the third probe. Fourth probe presence (n = not present, y = present) Thermo Scientific MBF-700 Refrigeration System Installation, Operation and Service Manual...
  • Page 93 P1 = Thermostat probe P2 = Evaporator probe Controller display P3 = Third probe (only for model with this option enabled) P4 = Fourth probe SEt = setpoint dtr = percentage of visualization Installation, Operation and Service Manual Thermo Scientific MBF-700 Refrigeration System...
  • Page 94 When P2P = y (defrost end based on temperature), it sets the maximum duration for defrost. (0 to 99 min) Start defrost delay This is useful when different defrost start times are necessary toavoid overloading the plant. Thermo Scientific MBF-700 Refrigeration System Installation, Operation and Service Manual...
  • Page 95 = no probe, the temperature alarms are disabled P1 = Probe 1 (Thermostat probe) Probe selection for alarm P2 = Probe 2 (evaporator probe) P3 = Probe 3 (display probe) P4 = Fourth probe Installation, Operation and Service Manual Thermo Scientific MBF-700 Refrigeration System...
  • Page 96 Time interval between the detection of the condenser alarm condition and alarm alarm delay signaling. Condenser temperature alarm (from 0.0 min to 23.5 hr, res. 10 min) exclusion at start up Thermo Scientific MBF-700 Refrigeration System Installation, Operation and Service Manual...
  • Page 97 With i2F = PAL: time for (0 to 255 min) pressure Time interval to calculate the number of the pressure switch activation. switch function Door open signaling delay (0 to 255 min) Installation, Operation and Service Manual Thermo Scientific MBF-700 Refrigeration System...
  • Page 98 These parameters set the beginning of the 6 programmable defrost Ld1 to Workday defrost start (0 to cycles during workdays. (e.g., When Ld2 = 12.4 the second defrost starts at 23 hr 50 min) 12:40 during workdays.) Thermo Scientific MBF-700 Refrigeration System Installation, Operation and Service Manual...

  • Page 99: Digital Inputs

    When the digital input is activated, the unit will wait for the di d delay before signaling the CA alarm message. The relay outputs are switched OFF. (i2F=bAL) The alarm will stop as soon as the digital input is deactivated. Installation, Operation and Service Manual Thermo Scientific MBF-700 Refrigeration System...
  • Page 100 This function enables the holiday defrost setting. 18.8.9 Holiday Defrost (i2F=HdF) - Only for Models with RTC Switches the controller ON and OFF. 18.8.10 ON/OFF Function (i2F=onF) Thermo Scientific MBF-700 Refrigeration System Installation, Operation and Service Manual...

  • Page 101: Rs485 Serial Line (For Monitoring Systems)

    Figure 16. X-REP Output To connect the X-REP to the controller, the following connectors must be used: CAB-51F(1m), CAB-52F(2m), and CAB-55F(5m). 18.11 Installation and Mounting Figure 17. Installation and Mounting of XR35CX Installation, Operation and Service Manual Thermo Scientific MBF-700 Refrigeration System...

  • Page 102: Electrical Connections

    Note The Err message is displayed in case of an error or failure in programming. In this case push the UP arrow key again if you want to restart the upload or remove the Hot Key to abort the operation. Thermo Scientific MBF-700 Refrigeration System Installation, Operation and Service Manual...

  • Page 103: Alarm Signals

    Condenser low temperature parameter Door open Compressor restarts External alarm Output unchanged Serious external alarm All outputs OFF (i1F = bAL) Pressure switch alarm All outputs OFF (i1F = PAL) Installation, Operation and Service Manual Thermo Scientific MBF-700 Refrigeration System...
  • Page 104 Alarms EA and CA (with i1F = bAL) recover as soon as the digital input is disabled. Alarm CA (with i1F = PAL) recovers only by switching the controller OFF and ON. 18.14.3 Other Messages Table 8: Additional Display Messages Message Output Keyboard unlocked Keyboard locked Thermo Scientific MBF-700 Refrigeration System Installation, Operation and Service Manual...

  • Page 105: Specifications

    SPST 16 A 250 VAC Relay outputs Aux: SPDT 8(3) A, 250 VAC On the non-volatile memory (EEPROM) Data Storing 24 hours Internal Clock Back-up Kind of Action Pollution Grade Installation, Operation and Service Manual Thermo Scientific MBF-700 Refrigeration System...

  • Page 106: Connections

    Accuracy (ambient temp. ±0.7 °C ±1 digit 25°C) 18.16 Connections Figure 18. XR35CX Connections • Supply: 120 VAC or 24 VAC: connect to terminals 5-6. • The X-REP output is optional. Thermo Scientific MBF-700 Refrigeration System Installation, Operation and Service Manual...

  • Page 107: E2 Modbus Network Wiring

    MODBUS network at the last XR35CX device on the daisy chain with the MODBUS termination block (P/N 535-2711), or by connecting a 150 ohm resistor between the MODBUS +/- terminals Installation, Operation and Service Manual Thermo Scientific MBF-700 Refrigeration System...

  • Page 108: Ect Modbus Networking To E2S

    COM2, an RS485 port on the E2 power interface board, and COM4 and COM6, which are optional ports requiring expansion cards. COM4 is recommended for MODBUS connection of XR35CX units. Thermo Scientific MBF-700 Refrigeration System Installation, Operation and Service Manual...
  • Page 109 Connect the MODBUS network cable to the three terminal connector on the COM port you wish to assign as MODBUS. Reverse polarity of +/- on RS485 cable from E2 to the device. Figure 20. Location of E2 COM Ports Installation, Operation and Service Manual Thermo Scientific MBF-700 Refrigeration System...
  • Page 110 1. Log in to the E2 with Level 4 access. followed by 2. Press General Controller Info. 3. Press to open the Serial tab of the General Controller Info setup screens Figure 22. Serial Communications Manager Screen Thermo Scientific MBF-700 Refrigeration System Installation, Operation and Service Manual...
  • Page 111 E2. 1. Log in to the E2 with Level 4 access. 2. Press Connected I/O Boards and controllers. Figure 23. Num Network Ctrls: NetSetup Screen Installation, Operation and Service Manual Thermo Scientific MBF-700 Refrigeration System...
  • Page 112 If the network ID you are trying to assign has already been used, you must set the address on this device to a different number that is not being used. Thermo Scientific MBF-700 Refrigeration System Installation, Operation and Service Manual...
  • Page 113 Verify the device is powered up, wired correctly, and has the proper network address, baud rate, and parity. No Port - No port is set up in the E2 Serial Configuration Manager to • be a MODBUS port. Installation, Operation and Service Manual Thermo Scientific MBF-700 Refrigeration System...
  • Page 114 59 pF/ft or less (17.98 m) or less Capacitance between signal and shield 4000 ft/18 to 22 AWG (1219.2 m) Maximum Length 2500 ft/24 AWG (762 m) 120 ohm ± 50 ohm Nominal Impedance Thermo Scientific MBF-700 Refrigeration System Installation, Operation and Service Manual...

  • Page 115: Default Setting Values

    Thermostat probe calibration -12 to 12 °C /-120 to 120 °F Evaporator probe presence n = not present; Y = present Evaporator probe calibration -12 to 12 °C /-120 to 120 °F Installation, Operation and Service Manual Thermo Scientific MBF-700 Refrigeration System...
  • Page 116 SEt, dEF MAX display delay after defrost 0 to 255 min Draining time 0 to 120 min First defrost after start-up n = after IdF; y = immediate Thermo Scientific MBF-700 Refrigeration System Installation, Operation and Service Manual...
  • Page 117 Compressor OFF for condenser low n(0) - Y(1) temperature alarm Compressor OFF for condenser high n(0) - Y(1) temperature alarm n = no Alarm relay disabling y = yes Installation, Operation and Service Manual Thermo Scientific MBF-700 Refrigeration System...
  • Page 118 Sun to Sat – not used Hd2* not used Energy Saving cycle start during 0 to 23 hr 50 min iLE* workdays Energy Saving cycle length during 0 to 24 hr 00 min dLE* workdays Thermo Scientific MBF-700 Refrigeration System Installation, Operation and Service Manual...

  • Page 119: Dixell Parameter Table

    Pt1000; ntc ON/OFF key enabling not used not used, oFF, ES Room probe display Evaporator probe display Third probe display Fourth probe display Real set actual set Software release Map code Installation, Operation and Service Manual Thermo Scientific MBF-700 Refrigeration System...
  • Page 120 Set point for continuous cycle -100 -100.0 150.0 °C Compressor ON time with Regulation faulty probe Compressor OFF time with Regulation faulty probe Kind of action : heating Regulation cooling Thermo Scientific MBF-700 Refrigeration System Installation, Operation and Service Manual...
  • Page 121 Draining time Defrost First defrost after start-up Defrost delay after fast Defrost 23.5 freezing Kind of action for auxiliary Auxiliary relay Auxiliary Set point for auxiliary relay -100.0 150.0 °C Installation, Operation and Service Manual Thermo Scientific MBF-700 Refrigeration System...
  • Page 122 23.5 alarm at start up Compressor off for condenser Alarm low temperature alarm Compressor off for condenser Alarm high temperature alarm Alarm relay switched off by Alarm pushing a key Thermo Scientific MBF-700 Refrigeration System Installation, Operation and Service Manual...
  • Page 123 Factory Group Parameter Description Minimum Maximum Unit Default Configuration First relay configuration Alarm Alarm relay polarity Digital inputs Digital input 1 polarity Digital inputs Digital input 1 configuration Digital inputs Digital input 2 polarity Digital inputs Digital input 2 configuration Digital inputs Digital input 2 alarm delay Digital inputs...
  • Page 124 Ulteriori informazioni sulla conformità di Thermo Fisher Scientific con queste Direttive, l’elenco delle ditte di riciclaggio nel Vostro paese e informazioni sui prodotti Thermo Scientific che possono essere utili alla rilevazione di sostanze soggette alla Direttiva RoHS sono disponibili sul sito www.thermo.com/ France Conformité...
  • Page 125 (manufacturer or specific agent/rep organization), and purchase order number. IF YOU NEED ASSISTANCE: Thermo Scientific products are backed by a global technical support team ready to support your applications. We also offer cold storage accessories, including remote alarms, temperature recorders and validation services.
  • Page 126 Thermo Fisher Scientific Inc. 275 Aiken Road Asheville, NC 28804 United States www.thermofisher.com 325152H01 Rev.E...

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