Thermo Scientific Merlin M75 Manual
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Thermo Scientific Merlin M75 Manual

Recirculating chiller
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Merlin M75
Recirculating Chiller
Thermo Scientific Manual P/N U01116
Rev. 09/21/2017
Multilingual
Quick Starts
Multilingual
Essential Safety
Instructions
Maintenance
Troubleshooting
Visit our Web site at:
http://www.thermofischer.com/tc
Product Service Information, Applications
Notes, SDS Forms, e-mail.
Voice Info: (800) 258-0830

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  • Page 1 Thermo Scientific Merlin M75 Recirculating Chiller Thermo Scientific Manual P/N U01116 Rev. 09/21/2017 Multilingual Quick Starts Multilingual Essential Safety Instructions Installation Operation Maintenance Troubleshooting Visit our Web site at: http://www.thermofischer.com/tc Product Service Information, Applications Notes, SDS Forms, e-mail. Voice Info: (800) 258-0830...
  • Page 3 Thermo Scientific Merlin M75 Recirculating Chiller Thermo Scientific Manual P/N U01116 Rev. 09/21/2017 Multilingual Quick Starts Multilingual Essential Safety Instructions Installation Operation Maintenance Troubleshooting Visit our Web site at: http://www.thermofischer.com/tc Product Service Information, Applications Notes, SDS Forms, e-mail. Voice Info: (800) 258-0830...
  • Page 4 Thermo Fisher Scientific Sales, Service, and Customer Support 25 Nimble Hill Road 25 Nimble Hill Road Newington, NH 03801 Newington, NH 03801 Tel : (800) 258-0830 or Tel: (800) 258-0830 (603) 436-9444 Sales: 8:00 am to 5:00 pm Fax : (603) 436-8411 Service and Support: 8:00 am to 6:00 pm www.thermoscientific.com/tc Monday through Friday (Eastern Time)

  • Page 5: Table Of Contents

    Error Codes ......................4-1 Displaying Software Version Number ............4-2 Controller PID Values..................4-3 Cleaning ......................4-3 Power Cable Mating Ends ................4-4 Leaks ........................4-4 PD Pressure Relief Valve .................4-4 Pump Strainer .....................4-5 Temperature Sensor Calibration ..............4-6 Decommissioning/Disposal ................4-8 Shipment/Storage ....................4-8 Merlin i Thermo Scientific...
  • Page 6 Contents Chapter 5 Troubleshooting....................5-1 Checklist ......................5-1 Service Assistance .....................5-3 Appendix NC Serial Communications Protocol ............A-1 Declaration of Conformity WARRANTY Merlin Thermo Scientific...
  • Page 7 Thermo Fisher Scientific has contracted with one or more recycling/ disposal companies in each EU Member State, dispose of or recycle this product through them. Further information on Thermo Fisher Scientific’s compliance with these Directives is available at: www.thermoscientific.com/WEEERoHS Merlin LR Series Thermo Scientific...
  • Page 8 If the chiller shows external or internal damage contact the transportation company and file a damage claim. Under ICC regulations, this is your responsibility. Thermo Scientific Merlin chillers have a warranty against defective parts Warranty and workmanship for 12 months from date of shipment.
  • Page 9 Never connect the process fluid inlet or outlet fittings to your building water supply or any water pressure source.  Never use flammable or corrosive fluids with this chiller. Highly distilled and deionized water may be aggressive and cause material corrosion.  Merlin Series v Thermo Scientific...
  • Page 10 Always turn off the chiller and disconnect the power cord from the power source before performing any service or maintenance procedures, or before moving the chiller.  Never operate equipment with damaged power cords.  Refer service and repairs to a qualified technician.  Merlin Series Thermo Scientific...
  • Page 59 Fluorinated The following information is included to comply with REGULATION (EU) No 517/2014 OF THE EUROPEAN PARLIAMENT AND OF Greenhouse THE COUNCIL of 16 April 2014 on fluorinated greenhouse gases: Gases This product contains fluorinated greenhouse gases in a hermetically sealed system.
  • Page 60 Gases de efecto in- La siguiente información se incluye de acuerdo con la REGULACIÓN (UE) Nº. 517/2014 DEL PARLAMENTO Y EL CONSEJO vernadero fluorados EUROPEO el 16 de abril de 2014 sobre gases de efecto invernadero fluorados: Este producto contiene gases de efecto invernadero en un sistema sellado herméticamente.
  • Page 61 Gazele fluorurate cu Următoarele informaţii sunt redactate în conformitate REGULAMENTUL (UE) NR. 517/2014 AL PARLAMENTULUI efect de ser EUROPEAN I AL CONSILIULUI din 16 aprilie 2014 privind gazele fluorurate cu efect de seră: Acest produs conţine gaze fluorurate cu efect de seră închise într-un sistem ermetic.
  • Page 62 Gassijiet Fluworu- L-informazzjoni li ġejja hi inluża biex tikkonforma mar-REGOLAMENT (UE) Nru 517/2014 TAL-PARLAMENT EWROPEW U TAL- rati b’Effett ta’ Serra KUNSILL tas-16 ta’ April 2014 dwar gassijiet fluworurati b’effett ta’ serra: Dan il-prodott fih gassijiet fluworurati b’effett ta’ serra f ’sistema ssiġillata ermetikament.
  • Page 63 Fluortartalmú A következő tájékoztatás az EURÓPAI PARLAMENT ÉS A TANÁCS (EU) 517/2014. SZÁMÚ, 2014. április 16-i, a fluortartalmú üvegházhatású üvegházhatású gázokkal kapcsolatos RENDELETÉBEN előírtak gázok teljesítése érdekében került a dokumentumba: A termék fluortartalmú üvegházhatású gázokat tartalmaz, hermetikusan zárt rendszerben. Ha a zárt rendszerben szivárgás jelentkezik, az üzemeltető köteles a lehető...
  • Page 64 μ π Οι ακόλουθες πληροφορίες περιλαμβάνονται για λόγους συμμόρφωσης με τον ΚΑΝΟΝΙΣΜΟ (ΕΕ) αριθ. 517/2014 ΤΟΥ ΕΥΡΩΠΑΪΚΟΥ ΚΟΙΝΟΒΟΥΛΙΟΥ ΚΑΙ ΤΟΥ ΣΥΜΒΟΥΛΙΟΥ της 16ης Απριλίου 2014 για τα φθοριούχα αέρα του θερμοκηπίου: Το παρόν προϊόν περιέχει φθοριούχα αέρια του θερμοκηπίου σε ερμητικά...
  • Page 65 F‐GAS D ECLARATIO ON OF CO NFORMITY     Declara ation of co nformity w with Articl e 14 of Re egulation ( (EU) No 51 17/2014 of f the  Europea an Parliam ment and o of the Coun ncil    We,  Therm mo  Fisher  Scie entific  (Ashevil lle)  LLC,  F‐Gas s  Portal  Regist tration  Numbe er  23643,  dec clare  under  ou ur ...
  • Page 67 Reservoir Access Panel. Controller. Pressure Gauge. Circuit Protector. Optional Communications Connector. Reservoir. Condenser Access Panel. Optional Plumbing Return Connection. Remote Start/Stop Connector. External Temperature Sensor. Plumbing Supply Connection. PD Pump Pressure Relief Valve. Drain. Merlin Thermo Scientific...
  • Page 68 . To turn the chiller off press again. LED indicates the status of the refrigeration system. It illuminates to indicate the refrigeration system is removing heat from the cooling fluid. As the operating temperature approaches the setpoint, the LED will flash. viii Merlin Thermo Scientific...

  • Page 69: Chapter 1 Description

    Description Chapter 1 Description The Thermo Scientific Merlin Recirculating Chiller is designed to provide a con- tinuous supply of cooling fluid at a constant temperature and flow. The chiller is hard-plumbed and has an air-cooled refrigeration system, plate heat exchanger, recirculating pump, polyethylene reservoir, and a microprocessor temperature controller.

  • Page 70: Wetted Parts

    Stainless steel (303,304,316) Plate exchanger, pump parts Soft Solder material (tin) All solder joints Phosphor Bronze Pressure gage bourdon tube Nitrile rubber Pump o-rings, seals Polyethylene (HDPE) Tank Bronze Relief valve Nickel (plating) Tank isolation valve 1- 2 Merlin Thermo Scientific...

  • Page 71: Chapter 2 Installation And Operation

    Direction of Airflow Excessively dusty areas should be avoided and a periodic cleaning schedule should be instituted (see Chapter 4, Maintenance). Optional air filters are available, contact our Service Department. See Preface, After-Sale Support. Merlin 2 - 1 Thermo Scientific...

  • Page 72: Electrical Requirements

    2 full turns ±¼ turn to seal. Overtightening will damage the female thread. Connect to the hose feeding the inlet of your application. Connect to the hose from the outlet of your application. Clamp all connections. 2 - 2 Merlin Thermo Scientific...
  • Page 73 Never use flammable or corrosive fluids with this chiller. Do not use automotive antifreeze. Commercial antifreeze contains silicates that CAUTION can damage the pump seals. Use of automotive antifreeze will void the manufacturer’s warranty.  The chiller is designed to use: HFE-7100 HFE-7200 FC-3283 FC-77. Merlin 2 - 3 Thermo Scientific...

  • Page 74: Filling Requirements

    90°. System temperature changes with the isolation valves closed, and CAUTION while circulating to a closed system, can create a vacuum and/or high pressure conditions.  2 - 4 Merlin Thermo Scientific...

  • Page 75: Controller

    Indicates refrigeration system status. It illuminates to indicate the refrigeration system is removing heat from the cooling fluid. As the operating temperature approaches the temperature setpoint, the LED will flash. The indicator is off when heat is not being removed. Merlin 2 - 5 Thermo Scientific...
  • Page 76 Save . After pressing an arrow key, if any change using is not pressed within 60 seconds the display will return to the recirculating temperature display and ignore any change.  2 - 6 Merlin Thermo Scientific...

  • Page 77: Start Up/Shut Down

    2°C of either temperature alarm setting discussed on the next page. Trying to use a setpoint within 2°C causes the appropriate indicator to flash and sounds the audible alarm twice.  Merlin 2 - 7 Thermo Scientific...
  • Page 78  NOTE Enabling serial communications disables the remote start/stop feature. In either mode, the setpoint and alarm values can not be changed using the controller but they can still be viewed.  2 - 8 Merlin Thermo Scientific...
  • Page 79 The circuit protector located on the rear of the chiller is not intended CAUTION to be used as a disconnecting means.  Always turn the chiller off and disconnect it from its supply voltage CAUTION before moving it.  Merlin 2 - 9 Thermo Scientific...

  • Page 80: Setup/Tuning Loop

    . This section of the loop is applicable only to chillers configured for serial communications capability. Changes made in the Tuning/Setup Loop take affect when is pressed at prompt. Pressing at the prompt aborts all changes. 2 - 10 Merlin Thermo Scientific...
  • Page 81 Chapter 2 HOLD XX.X Indicates Optional Displays To select rtd2 ensure remote probe is properly connected to rear of chiller. Accept All Changes Merlin 2 - 11 Thermo Scientific...
  • Page 82 Chapter 2 2 - 12 Merlin Thermo Scientific...

  • Page 83: Chapter 3 Options

    RS-232 COMM No connection No connection GND = Signal ground 6 - 9 No connection TX = Transmitted data from controller RX = Received data to controller. Hardware Mating Connector AMP Part# 745492-2 or equivalent Merlin 3 -1 Thermo Scientific...

  • Page 84: Remote Start/Stop

    56 volts peak. Rating for both normally open and normally closed status relay contacts are: Maximum rated load - 1.0 Amp, 24 Volts AC/DC, resistive. Minimum permissible load - 1 ma @ 5 VDC. 3 - 2 Merlin Thermo Scientific...
  • Page 85 The external probe can be used to control the high and low temperature monitors using the Setup/Tuning Loop, see Chapter 2. NOTE If you also need to monitor status while using the external sensor, an optional Y-connector cable is available from Thermo Fisher.  Merlin 3 - 3 Thermo Scientific...

  • Page 86: Reservoir Level Warning/Fault

    Once the cause of the low flow is identified and corrected restart the chiller, if necessary. The chiller is configured to run or shut down using the controller's Setup/ Tuning Loop, see Chapter 3. 3 - 4 Merlin Thermo Scientific...

  • Page 87: Chapter 4 Maintenance

    BOM invalid Functional/ Machine errors These errors will clear themselves once the problem disappears. Display Indication Low temp setpoint warning/fault Low level warning, fluid below minimum fill level, see Chapter 2 High temp setpoint warning/fault Shorted internal temperature sensor (rdt1) Open internal temperature sensor (rtd1) Merlin 4 - 1 Thermo Scientific...

  • Page 88: Displaying Software Version Number

    The display will show the decimal point and the digit to the right of the decimal point, for example, . 5. Press The display will show the revision letter, as its equivalent number, for example, = A. 6. Press Disregard this display. 7. Press The display returns to the recirculating fluid temperature. 4 - 2 Merlin Thermo Scientific...

  • Page 89: Controller Pid Values

    After initial installation we recommend a monthly visual inspection of the condenser. After several months, the cleaning frequency will be established. CAUTION Use care cleaning the condenser fins, they can be easily bent.  Thermo Scientific Merlin 4 - 3...

  • Page 90: Power Cable Mating Ends

    NOTE The relief valve may drip if the threaded stem is backed out too far.  NOTE Should the chiller start to vibrate the valve setting may be the cause. Changing the pressure setting ±5 psi will eliminate the vibration.  4 - 4 Merlin Thermo Scientific...

  • Page 91: Pump Strainer

    NOTE Some chillers with ¾ inch fittings also have a brass end cap, see illustration below.  Brass Cap (some chillers only) Screen Fitting ¾" Right-side view Clean the screen by rinsing it with water. When the screen is clean, replace it and the cap. Tighten the fitting and replace the panel. Refer to Section III for instructions on replacing the cooling fluid. Thermo Scientific Merlin 4 - 5...

  • Page 92: Temperature Sensor Calibration

    Press again and the display will flash between r1H and the current probe temperature. to adjust the r1H display. Once the display temperature matches the reference thermometer press twice. Press until Stor is displayed, press to accept the new value. Repeat for the low-end temperature r1L. 4 - 6 Merlin Thermo Scientific...
  • Page 93 After pressing at the Stor prompt wait several seconds before proceeding to ensure that a bad calibration message does not appear. Premature use of the keypad after pressing may cancel the bad calibration error message.  Thermo Scientific Merlin 4 - 7...

  • Page 94: Decommissioning/Disposal

    Draining in this Section. Store the chiller in the temperature range of -25°C to 60°C (with packaging), and <80% relative humidity.  CAUTION If the chiller is stored for more than 90 days it must be flushed with clean fluid before operating.  4 - 8 Merlin Thermo Scientific...

  • Page 95: Troubleshooting

    10 seconds, the controller will power. Turn serial communications off using the procedure in Chapter 2, and then press to turn off the controller. Press again to start the chiller. Merlin 5 -1 Thermo Scientific...
  • Page 96 Make sure the air intake and discharge are not impeded and the ambient temperature does not exceed +35°C. d. Make sure the condenser is free of dust and debris, see Chapter 4, Maintenance and Cleaning. e. Verify the controller's PID values, see Setup/Tuning Loop. 5 - 2 Merlin Thermo Scientific...

  • Page 97: Service Assistance

    Preface, After-sale Support). Before calling, please obtain the following information: Before calling, please obtain the following information: chiller BOM number  chiller serial number  chiller software version  voltage of power source  Merlin 5 - 3 Thermo Scientific...
  • Page 98 Chapter 5 5 - 4 Merlin Thermo Scientific...

  • Page 99: Nc Serial Communications Protocol

    Otherwise, the controller responds with the requested data. If the controller fails to respond within 1 second, the host should resend the command. Merlin A- 1 Thermo Scientific...
  • Page 100 CA 00 01 20 03 01 FF F4 E7 The checksum is the bitwise inversion of 18 (00+01+20+03+01+FF+F4) = 218 Take the LSB = 18 3 bytes to follow Bitwise inversion = E7 A - 2 Merlin Thermo Scientific...
  • Page 101 = 16 bit signed integer of the value being en (error number) 01 = Bad command, sent or received 02 = Bad checksum cs = the checksum of the string (see text) xx = no valid data, include in checksum Thermo Scientific Merlin A - 3...
  • Page 102 High or Low Temp Bypass Low Temp/Fixed Low Temp Fault b.1 = 1 Chiller Faulted* Low Flow Fault b.0 = 1 ChillerRunning* Low Level 2 Fault t d2 is the detail of fault d1-b.1 * mutully exclusive A - 4 Merlin Thermo Scientific...
  • Page 104 Thermo Fisher Scientific warrants for 24 months (excluding Positive Displacement pumps which are warranted for 12 months) from date of shipment the Thermo Scientific Merlin chiller according to the following terms. Any part of the chiller manufactured or supplied by Thermo Fisher Scientific and found in the reasonable judgment of Thermo Fisher to be defective in material or workmanship will be repaired at an authorized Thermo Fisher Repair Depot without charge for parts or labor.
  • Page 105 L'acheteur est responsable de tout appel de service de garantie ou évaluation (y compris les frais de main-d'œuvre) si le produit Thermo Scientific ne présente aucun défaut. La présente garantie ne couvre pas les refroidisseurs ayant fait l'objet d'une mauvaise utilisation, de négligence ou d'un accident.
  • Page 106 La présente garantie s'applique aux refroidisseurs vendus par Thermo Fisher Scientific. (Reportez- vous à la garantie des refroidisseurs vendus par l'entreprise de commercialisation affiliée de Thermo Fisher Scientific pour en savoir plus sur les conditions.) La présente garantie ainsi que toutes les questions qui en découlent sont régies par la législation de l'État du New Hampshire, aux États- Unis.
  • Page 107 Thermo Fisher Scientific 168 Third Avenue Waltham, Massachusetts 02451 United States www.thermofisher.com...

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