Julabo Eco Series Operating Manual
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Julabo Eco Series Operating Manual

Recirculating coolers
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SemiChill
Eco-Series
SC2500a
air cooled
SC2500w
water cooled
1.950.4551.us.V09
Operating Manual
Recirculating Coolers
01/22
Flow
130
60
Cond.
180
30
°C
10
220
°C
ESC
JULABO USA, Inc.
884 Marcon Boulevard
Allentown, PA 18109
Phone: +1(610) 231-0250
Fax:
+1(610) 231-0260
info@julabo.us
www.julabo.us
ON
OFF
SC 2500

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  • Page 1 Operating Manual SemiChill Recirculating Coolers Eco-Series Flow Cond. °C °C SC2500a SC 2500 air cooled SC2500w water cooled JULABO USA, Inc. 884 Marcon Boulevard Allentown, PA 18109 Phone: +1(610) 231-0250 Fax: +1(610) 231-0260 info@julabo.us www.julabo.us 1.950.4551.us.V09 01/22...
  • Page 2 Congratulations! You have made an excellent choice. JULABO thanks you for the trust you have placed in us. This operating manual has been designed to help you gain an understanding of the operation and possible applications of our circulators. For optimal utilization of all functions, we recommend that you thoroughly study this manual prior to beginning operation.

  • Page 3: Table Of Contents

    Recirculating Cooler TABLE OF CONTENTS 1. Intended use ........................5 1.1. Description ........................5 2. Operator responsibility – Safety instructions ..............5 2.1. Disposal ........................7 2.2. Technical specifications ....................8 2.3. Cooling water connection ................... 11 3. Operating controls and functional elements ..............12 4.
  • Page 4 12.2. Communication with a PC or a superordinated data system ........39 12.3. List of commands ......................40 12.4. Status messages ......................42 12.5. Error messages......................42 13. JULABO Service – Online remote diagnosis ..............43 14. Cleaning / repairing the unit .................... 44 15. WARRANTY PROVISIONS .................... 45...

  • Page 5: Intended Use

    Recirculating Cooler Intended use JULABO recirculating coolers have been designed to control the temperature of specific fluids in a bath tank. The units feature pump connections for temperature control of external systems (loop circuit). JULABO recirculating coolers are not suitable for direct temperature control of foods, semi-luxury foods and tobacco, or pharmaceutical and medical products.
  • Page 6 If you have any questions concerning the operation of your unit or the information in this manual, please contact us! Contact JULABO USA, Inc. Phone: +1(610) 231-0250 884 Marcon Boulevard Fax: +1(610) 231-0260 Allentown, PA 18109 info@julabo.us...

  • Page 7: Disposal

    There are thermal dangers: Burn, scald, hot steam, hot parts and surfaces that can be touched. Hot surface warning. (The label is put on by JULABO) Observe the instructions in the manuals for instruments of a different make that you connect to the circulator, particularly the corresponding safety instructions.

  • Page 8: Technical Specifications

    Operator responsibility – Safety instructions 2.2. Technical specifications Performance specifications measured in accordance with DIN12876. Cooling capacities up to 20°C measured with ethanol; over 20°C with thermal oil unless specified otherwise. Performance specifications apply at an ambient temperature of 20°C. Performance values may differ with other bath fluids.
  • Page 9 Recirculating Cooler Eco- Series Temperature selection digital via keypad indication on LED-Multi-Display remote control via personal computer indication on monitor Temperature indication °C LED-Multi-Display Resolution °C Electrical connection: Computer interface RS232 Table 1 XX.XX XX.XX Pump capacity Bath fluid: Water, Silicone -oil PUMP PUMP Circulating pump:...
  • Page 10 Operator responsibility – Safety instructions Safety installations according to IEC 61010-2-010: Excess temperature protection adjustable from 0 °C ... 320 °C Low liquid level protection float switch Classification according to DIN 12876-1 class III Supplementary safety installations Early warning system for low level float switch High temperature warning function optical + audible (in intervals)

  • Page 11: Cooling Water Connection

    Recirculating Cooler 2.3. Cooling water connection Cooling water pressure (IN/OUT) max. 6 bar Pressure difference (IN - OUT) 3.5 to 6 bar Cooling water temperature < 20 °C Notice: Cooling water circuit Risk of oil leaking from the refrigeration system (compressor) of the recirculating cooler into the cooling water in case of a fault in the cooling water circuit! Observe the laws and regulations of the water distribution company valid in the location where the unit is operated.

  • Page 12: Operating Controls And Functional Elements

    Operating controls and functional elements Operating controls and functional elements Front view Rear view RGE NC Y ST E NE °C °C SC 2500 Mains power switch Emergency stop switch Adjustable excess temperature protection according to IEC 61010-2-010 °C Keypad Start / stop key Key for selecting the working temperature - Setpoint 1, 2, 3 Key for selecting the warning and safety values...
  • Page 13 Recirculating Cooler Escape key 1. Cancel entries 2. Return to a higher menu level MULTI-DISPLAY (LED) temperature indication, menu indication Control indicator –Heating Control indicator – Cooling Control indicator – Alarm Filling level indication Manometer (feed pressure) Handle Filling opening Venting grid, removable (only air cooled recirculating cooler) Interface RS232: remote control via personal computer...

  • Page 14: Safety Notes For The User

    Safety notes for the user Discharge nozzle with cap nut, Connection: ½ " male Recommendation: Before filling please install a drain cock at the discharge nozzle. (not included in delivery) Order-No. 8 920 100 Drain cock, stainless steel Only for water cooled models: Cooling water OUTLET and INLET Safety notes for the user 4.1.

  • Page 15: Safety Instructions

    Recirculating Cooler 4.3. Safety instructions Follow the safety instructions to avoid personal injury and property damage. Also, the valid safety instructions for workplaces must be followed. Only connect the unit to a power socket with an earthing contact (PE – protective •...
  • Page 16 Safety notes for the user Caution: The unit may be used, for example, to control the temperature of fluids in a reactor. We do not know what substances are contained in these vessels. Many substances are: • inflammable, easily ignited, or explosive hazardous to health •...

  • Page 17: Preparations

    Recirculating Cooler Preparations 5.1. Installation Place the unit in an upright position. • For better stability, apply the holding brakes on the front casters. • The place of installation should be large enough and provide sufficient air ventilation to ensure the room does not warm up excessively because of the heat the instrument rejects to the environment.

  • Page 18: Connecting The External System

    Preparations 5.2. Connecting the external system • Connect the tubing for cooling the external system to the pump connectors (22, 23) for feed and return on the rear of the recirculating cooler. 3/4" NPT male • In case the system to be cooled is located at a higher level than the recirculating cooler, take note of bath liquid flowing back when the unit is switched off.

  • Page 19: Tubing

    Recirculating Cooler 5.2.1. Tubing Recommended tubing: Maximum pressure Textile-reinforced tubing > 4.5 bar Warning: Tubing: At high working temperatures, the tubing used for temperature control and for the cooling water supply represents a danger source. A damaged tubing line may allow a large amount of hot bath fluid to be pumped out within a short time.

  • Page 20: Filling

    Fire or other dangers when using bath fluids that are not recommended: Please contact JULABO before using other than recommended bath liquids. JULABO assumes no liability for damage caused by the selection of an unsuitable bath fluid. Unsuitable bath fluids are fluids which, e.g., are highly viscous •...

  • Page 21: Draining

    Recirculating Cooler 5.4. Draining Notice:  Do not drain the bath fluid while it is hot or cold! Check the temperature of the bath fluid prior to draining (by switching the unit on for a short moment, for example).  Store and dispose of the used bath fluid according to the environmental protection laws.

  • Page 22: Operating Procedures

    Operating procedures Operating procedures 6.1. Power connection Caution: • Only connect the unit to a power socket with an earthing contact (PE – protective earth)! The power supply plug serves as a safe disconnecting device from the line and • must always be easily accessible.

  • Page 23: Autostart On / Off

     AUTOSTART off. NOTE: The recirculating cooler has been configured and supplied by JULABO according to N.A.M.U.R. recommendations. This means for the start mode, that the unit must enter a safe operating state after a power failure (non-automatic start mode). This safe operating state is indicated by „OFF“...

  • Page 24: Setting The Temperatures

    Setting the temperatures Setting the temperatures Press the key to call up the menu for temperature selection.  Setting can be carried out in the start/stop condition. Factory settings: 25 °C Example: Actual value Press the key. The setpoint value instead of the actual value is indicated on the display.

  • Page 25: Early Warning System, Low Level Protection

    Recirculating Cooler Warning: The excess temperature protection >SafeTemp< should be set at least below the flash point of the bath fluid used. There is a risk of fire in the event of a wrong setting! We disclaim all liability for damage caused by wrong settings! 8.2.

  • Page 26: High And Low Temperature Warning Functions

    Safety installations, warning functions 8.3. High and low temperature warning functions Factory settings: If for a sensitive temperature application task adherence to a working temperature value (setpoint) is to be supervised, then set high and low temperature warning values. In the example below, the >Setpoint< of 85 °C is surrounded by the High temperature limit values >...

  • Page 27: Limitation Of The Operating Temperature Range

    Recirculating Cooler 8.4. Limitation of the operating temperature range The limitation of the operating temperature range effects the temperature Factory settings: setting under the menu called up with the key. It is possible to adjust only working temperatures that lie within the limit range set here. Existing settings for Setpoint 1, 2, 3 and also for >...

  • Page 28: Change-Over Of The Warning Function To Shutdown Function

    Safety installations, warning functions 8.5. Change-over of the warning function to shutdown function For the two menu items > t High < and > t Low < choose between a warning message being signalled or a complete shutdown of the main functional elements such as heater and circulating pump being effected Factory setting: Li 0 (see page 26).

  • Page 29: Menu Functions

    Recirculating Cooler Menu functions The term „menu functions“ refers to adjustments such as electronically adjustable pump capacity • Pump  ATC - Absolute Temperature Calibration •  ATC status Type (Art): >1. point<, >2. point < or >3. point < calibration 2 values per calibration point ttx = Defined temperature value of the calibration point.

  • Page 30: Setting The Pump Pressure

    Menu functions 9.1. Setting the pump pressure The pressure of the circulating pump is adjustable in stages. See table 1 page 9 Press the button until the menu item Factory setting: Stage 2 is displayed. Press enter to indicate the parameter. Select the parameter with the keys (1 ...
  • Page 31 Recirculating Cooler The menu ATC - Absolute Temperature Calibration is structured in 2 levels. ATC status Calibration type: 1-, 2-, 3-point calibration 2 values per calibration point ttx = Temperature indication on circulator Indicates the value of the calibration point entered last. Ctx = Calibration temperature x Input of the new value for the calibration curve.
  • Page 32 Menu functions Determine the calibration type: (1-point, 2-point or 3-point calibration.) Press the button until the menu item is displayed Example and press enter to indicate the parameter. Select the parameter with the keys (1, 2, 3). Press enter to store the selected parameter. ...

  • Page 33: Remote Control: Activate - Deactivate

    Recirculating Cooler 9.3. Remote control: activate – deactivate The circulator is to be prepared for remote control by a personal computer via the serial interface RS232: Set the menu item >remote< from >no< to >YES<. Factory setting: no Press the button until the menu item is displayed.

  • Page 34: Control Parameters - Xp, Tv, Tn

    Menu functions Handshake 0 = Xon/Xoff protocol software handshake 1 = Protocol RTS/CTS hardware handshake Data bits = 7; Stop bits = 1 Press the button until the desired menu item is displayed. Press enter to indicate the parameter. Select the parameter with the keys Press enter to store the selected parameter.
  • Page 35 Recirculating Cooler Press the button until the desired menu item is displayed. Press enter to indicate the parameter. Set value: Use the cursor keys to move left or right on the display until the numeral you wish to change blinks. Use the increase/decrease arrows to change the selected numeral (-, 0, 1, 2, 3, ...

  • Page 36: Reset

    Replace the tubing and replenish the bath tank with the bath fluid. • The float is defect (e. g., because damaged in transit). Repair by authorized JULABO service personnel. Excess temperature sensors defect. • • The excess temperature value lies below the working temperature...
  • Page 37 Replenish the bath tank with the bath fluid. After eliminating the malfunction, press the mains power switch off and on again to cancel the alarm state. If the unit cannot be returned to operation, contact an authorized JULABO service station. Mains fuses...

  • Page 38: Electrical Connections

    Electrical connections 11. Electrical connections Notice: Use shielded cables only. The shield of the connecting cable is electrically connected to the plug housing. The unit ensures safe operation if connecting cables with a maximum length of 3 m are used. The use of longer cables does not affect proper performance of the unit, however external interferences may have a negative impact on safe operation.

  • Page 39: Remote Control

    Recirculating Cooler 12. Remote control 12.1. Setup for remote control • Check the interface parameters for both interfaces (on circulator and PC) and make sure they match. (Serial interface - see page 33) RS232C Set the menu item >Remote< from >no< to >YES<. •...

  • Page 40: List Of Commands

    Remote control Important times for a command transmission: To ensure a safe data transfer, the time gap between two commands should  be at least 250 ms. The circulator automatically responds to an in command with a data string followed by a LF (Line Feed). The next command should only be sent after 10 ms.
  • Page 41 Recirculating Cooler in commands: Asking for parameters or temperature values to be displayed. Command Parameter Response of circulator version None Number of software version (V X.xx) status none Status message, error message (see page 42 ) in_pv_00 none Actual bath temperature. in_pv_01 none Heating power being used (%).

  • Page 42: Status Messages

    Remote control 12.4. Status messages Status messages Description 00 MANUAL STOP Recirculating cooler in „OFF“ state. 01 MANUAL START Recirculating cooler in keypad control mode. 02 REMOTE STOP Recirculating cooler in „r OFF“ state. 03 REMOTE START Recirculating cooler in remote control mode. 12.5.

  • Page 43: Julabo Service - Online Remote Diagnosis

    Recirculating Cooler 13. JULABO Service – Online remote diagnosis JULABO circulators of the HighTech series are equipped with a black box. This box is implemented in the controller and records all significant data for the last 30 minutes. In case of a failure, this data can be read out from the unit by using special software.

  • Page 44: Cleaning / Repairing The Unit

    The recirculating cooler is designed for continuous operation under normal conditions. Periodic maintenance is not required. The tank should be filled only with a bath fluid recommended by JULABO. To avoid contamination, it is essential to change the bath fluid from time to time. Repairs Before asking for a service technician or returning a JULABO instrument for repair, please contact an authorized JULABO service station.

  • Page 45: Warranty Provisions

    Recirculating Cooler 15. WARRANTY PROVISIONS The following Warranty Provisions shall apply to products sold in North America by Julabo (“Seller”) to the entity shown as buyer (“Buyer”) on Seller’s invoice. Initial Warranty Upon Seller’s receipt of payment in full for the products and subject to Buyer’s compliance with the terms of sale...
  • Page 46 An Out of Box Failure (OBF) is defined as a product failure immediately following unpacking and installation of a newly delivered product. JULABO provides a 14-day grace period after the date of shipment, during which time the delivered product must be checked for defect. The same exclusions that apply to the regular warranty also apply to OBF classification.

This manual is also suitable for:

Semichill sc2500aSemichill sc2500w95000269500025Semichill eco seriesSc2500a ... Show all

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