English Operating manual Open Bath Circulator EH-5 EH-27 EH-13 EH-33 EH-19 EH-39 JULABO GmbH 77960 Seelbach / Germany Tel. +49 (0) 7823 / 51-0 Fax +49 (0) 7823 / 24 91 info@julabo.de www.julabo.de 1.951.0257-V2 19510257-V2.doc 06/13 Print date: 11.07.
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.
EH TABLE OF CONTENTS Operating manual .................................................................................................................... 4 1. Intended use .................................................................................................................... 4 1.1. Description .................................................................................................................. 4 2. Operator responsibility – Safety recommendations ..............................
Operating manual Operating manual 1. Intended use JULABO circulators 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 circulators are not suitable for direct temperature control of foods, semi-luxury foods and tobacco, or pharmaceutical and medical products. Direct temperature control means unprotected contact of the object with the bath medium (bath fluid). 1.1.
EH If you have any questions concerning the operation of your unit or the information in this manual, please contact us! Contact: JULABO GmbH Eisenbahnstraße 45 77960 Seelbach / Germany Tel. +49 (0) 7823 / 51-0 info@julabo.de Fax +49 (0) 7823 / 24 91 www.julabo.de Safety instructions for the operator: You have received a product designed for industrial use. Nevertheless, avoid strikes to the housing, vibrations, damage to the operating-element panel (keypad, display), and contamination.
Operator responsibility – Safety recommendations When using hazardous materials or materials that could become hazardous, the operator must affix the enclosed safety labels (1 + 2) to the front of the unit so they are highly visible: 1 Warning label W00: Colors: yellow, black Danger area. Attention! Observe instructions. (operating manual, safety data sheet) 2 Mandatory label M018: Colors: blue, white Carefully read the user information prior to beginning operation.
EH 2.2. EC Conformity The products described in the operating instructions conform to the requirements of the following European guidelines: Directive of the European Parliament and of the Council on the approximation of the laws of the Member States relating to machinery. EMC guideline with respect to legal harmonization of the member countries concerning electromagnetic compatibility. JULABO GmbH Eisenbahnstr. 45 77960 Seelbach / Germany 2.3.
Operator responsibility – Safety recommendations 2.4. Technical specifications Working temperature range Temperature stability Temperature selection Temperature indication Resolution ATC - Absolute Temperature Calibration Temperature control kW kW Circulating pump: discharge, max.at 0 bar pressure, max. at 0 l l/min bar 2.0 1.0 15 0.
EH Open Bath Circulators Bath opening (WxL) Bath depth Filling volume from ... to Overall dimensions (WxDxH) Weight EH-27 36x30 20 21 ... 27 57x37x42 13.0 cm cm liters cm kg EH-33 67x30 15 24 ... 33 91x33x38 20.0 EH-39 36x30 30 33 ... 39 54x34x52 19.0 Safety installations according to IEC 61010-2-010: Excess temperature protection adjustable from 0 °C ...
Operating instructions Operating instructions 3. 3.1. Safety notes for the user Explanation of safety notes In addition to the safety warnings listed, warnings are posted throughout the operating manual. These warnings are designated by an exclamation mark inside an equilateral triangle. “Warning of a dangerous situation (Attention! Please follow the documentation).” The danger is classified using a signal word. Read and follow these important instructions for averting dangers.
EH material. Do not stay in the area below the unit. Make sure you read and understand all instructions and safety precautions listed in this manual before installing or operating your unit. Never operate the unit without bath fluid in the bath. Set the excess temperature safety installation at least 25 °C below the fire point of the bath fluid. Do not drain the bath fluid while it is hot! Check the temperature of the bath fluid prior to draining (e.g.
Safety notes for the user Notice: Check the safety installations at least twice a year! Excess temperature protection according to IEC 61010-2-010. With a screwdriver turn back the adjustable excess temperature protection until the shut-down point (actual temperature). Low level protection according to IEC 61010-2-010. To check the function of the float, it can be manually lowered with a screwdriver for example. Caution: The temperature controlling i.e.
EH 4.
Preparations 5. 5.1. Preparations Installation Top view Place the circulator in an upright position. The circulator (A) fitted with a stainless steel bridge is placed on the right side of the bath tank leaving the bath open on the left side. EH-13, EH-19, EH-27, EH-33, EH-39 A lift-up bath cover or flat stainless steel bath cover is available as optional accessory. Lift-up bath cover: Order-No. 8970253 Bath tank 13 Order-No. 8970254 Bath tank 19, 27 Order-No..
EH 5.2. Bath fluids Caution: Carefully read the safety data sheet of the bath fluid used, particularly with regard to the fire point! If a bath fluid with a fire point of 65 °C is used, only supervised operation is possible. Water: The quality of water depends on local conditions. Due to the high concentration of lime, hard water is not suitable for temperature control because it leads to calcification in the bath. Ferrous water can cause corrosion - even on stainless steel.
Preparations See website for list of recommended bath fluids. Contact: see page 5 Caution: Fire or other dangers when using bath fluids that are not recommended: Please contact JULABO before using other than recommended bath fluids. Use only nonacidic and noncorrosive bath fluids. JULABO assumes no liability for damage caused by the selection of an unsuitable bath liquid. Unsuitable bath fluids are fluids which, e.g.
EH 5.3. Filling / Draining Notice: Pay attention to the thermal expansion of bath oil during heating to avoid overflowing of the liquid. Do not drain the bath fluid while it is hot! Check the temperature of the bath fluid prior to draining (by switching the unit on for a short moment, for example). Store and dispose the used bath fluid according to the laws for environmental protection. Filling Take care that no liquid enters the interior of the circulator.
Preparations 5.4. Temperature application to external systems Caution: Securely attach all tubing to prevent slipping. If the circulator is operated without external system, close the pump connector (14a) with the cap nut. The circulator is used for temperature application to external, closed systems (loop circuit). The circulator is used for temperature application to external, closed systems (loop circuit) with simultaneous temperature application in the circulator bath.
EH Warning: Tubing: At high working temperatures the tubing used for temperature application and cooling water supply represents a danger source. A damaged tubing line may cause hot bath fluid to be pumped out within a short time. This may result in: Burning of skin Difficulties in breathing due to hot atmosphere Safety recommendations Employ suitable connecting tubing. Make sure that the tubing is securely attached.
Preparations 5.6. Countercooling Notice: Securely attach all tubing to prevent slipping. Observe the laws and regulations of the water distribution company valid in the location where the unit is operated. For applications near the ambient temperature, the cooling coil must be connected to the water mains. Using tubing, connect the cooling coil (25a) to the tap water supply, and lead the tap water in a sink through the return connector (25b).
EH 6. 6.1. Operating procedures Power connection Caution: Only connect the unit to a power socket with earthing contact (PE – protective earth)! The power supply plug serves as safe disconnecting device from the line and must be always easily accessible. Never operate equipment with damaged mains power cables. Regularly check the mains power cables for material defects (e.g. for cracks).
Operating procedures 6.3. Automatic / non-automatic start mode Keep depressed the key and turn on the circulator with the mains power switch. For a short while the LED temperature DISPLAY indicates the effective start mode: AUTOSTART on. AUTOSTART off. NOTE: The circulator 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).
EH 6.5. ATC - Absolute Temperature Calibration Working temperature range refer to page 8 1-point calibration: The temperature sensor can be calibrated at any value within the working temperature range. Set the high temperature cut-off / safety temperature to a value above the desired adjustment value (Example: 80 °C). 80 40 120 0 160 Place a calibrated thermometer (resolution: 0.01 °C) in the middle of the bath to measure the actual bath temperature. 1.
Operating procedures 6.6. Timer function With the timer function the operating time can be limited to an allowed time. 6.6.1. Setting the time The setting can only be made in the Stop status. 1. Factory setting: Calling the timer function: key pressed and activate the edit key Hold the shortly. The time which was set last, is shown. 2. Setting the time: Activate key Max. time: to set a higher value . Activate key to set a lower value .
EH 6.7. Safety installations according to IEC 61010-2-010 Check the safety installations at least twice a year! See page 12. 6.7.1. Excess temperature protection Warning: The excess temperature protection should be set at least 25 °C below the fire point of the bath fluid used. In the event of wrong setting there is a fire hazard! We disclaim all liability for damage caused by wrong settings! This safety installation is independent of the control circuit.
Troubleshooting guide / Error messages 7. Troubleshooting guide / Error messages + Whenever the microprocessor electronics registers a failure, a complete shutdown of the heater and circulating pump is performed. The alarm light " " illuminates and a continuous signal tone sounds. The LED temperature display indicates the cause for the alarm in form of a code. Press the key to quit the audible signal. The circulator is operated without bath fluid, or the liquid level is insufficient.
EH Disturbances that are not indicated. The electronic pump motor is overload-protected by an electronic current limiter. If viscosity of the bath fluid is or becomes too high, the motor stops running. 15 A M P 8. Circulator: Mains circuit breakers (resettable) 15 A Electrical connections Notice: Use shielded cables only. The shield of the connecting cable is electrically connected to the plug housing.
Cleaning / repairing the unit 9. Cleaning / repairing the unit Caution: Always turn off the unit and disconnect the mains cable from the power source before cleaning the unit. Prevent humidity from entering into the circulator. Electrical connections and any other work must be performed by qualified personnel only. Cleaning For cleaning the bath tank and the immersed parts of the circulator, use low surface tension water (e.g., soap suds).
