English Operating manual Heating Immersion Circulator EH JULABO GmbH 77960 Seelbach / Germany Tel. +49 (0) 7823 / 51-0 Fax +49 (0) 7823 / 24 91 info@julabo.de www.julabo.de 1.951.0252-V2 19510252-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 for temperature application to specific fluids in a bath tank. 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. Description The circulators are operated via the splash-proof keypad.
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 to the front of the unit so they are higly 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 2.1. Disposal The product may be used with oil as bath fluid. These oils fully or partially consist of mineral oil or synthetic oil. For disposal, observe the instructions in the safety data sheets. Valid in EU countries See the current official journal of the European Union – WEEE directive. Directive of the European Parliament and of the Council on waste electrical and electronic equipment (WEEE).
Operator responsibility – Safety recommendations 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.
EH 2.4. Technical specifications Working temperature range Temperature stability °C °C Temperature selection Temperature indication Resolution ATC - Absolute Temperature Calibration Temperature control °C Heater wattage (at 230 V) Heater wattage (at 115 V) kW kW Circulating pump: discharge, max.at 0 bar pressure, max. at 0 l l/min bar EH 20 ... 150 ±0.03 digital LED 0.1 1-point PID1 2.0 1.0 15 0.
Operator responsibility – Safety recommendations Safety installations according to IEC 61010-2-010: Excess temperature protection adjustable from 0 °C ... 170 °C Low liquid level protection float switch Classification according to DIN 12876-1 class III Alarm message optical + audible (permanent) Environmental conditions according to IEC 61 010-1: Use only indoor. Altitude up to 2000 m - normal zero. Ambient temperature: +5 ... +40 °C Air humidity: Max. rel.
EH 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.
Safety notes for the user 12 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.
EH 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. of fluids in a reactor constitutes normal circulator practice.
Operating controls and functional elements 4.
EH 5. 5.1. Preparations Installation Caution: Securely fix the immersion circulator. The heater may not be in contact with the wall of the bath tank. Keep a distance of at least 15 mm. Units not adequately fixed may drop into the bath tank. Danger of electric shock! First pull out the power plug to disconnect the unit from the power supply net. Then take the immersion circulator out of the bath tank. Make a service technician check the instrument before it is used again.
Preparations 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.
EH 5.3. 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 (24a) with the cap nut. The circulator is used for temperature application to external, closed systems (loop circuit). 5.3.1. Pump set Order No. 8 970 140 Accessories 24b 24a 23 Description Pump set Mounting the pump set: Remove the bath attachment clamp (21).
Preparations 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.
EH 5.5. 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 (order no. 8 970 105) must be connected to the water mains. Mounting the cooling coil: 25b 25a 21 Remove the bath attachment clamp (21).
Operating procedures 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).
EH 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).
Operating procedures 6.5. ATC - Absolute Temperature Calibration Working temperature range refer to page 9 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.
EH 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 .
Operating procedures 6.7. Safety installations according to IEC 61010-2-010 Check the safety installations at least twice a year! See page 13. 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.
EH 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. Replenish the bath tank with the bath fluid.
Electrical connections 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.
EH 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). Clean the outside of the unit using a wet cloth and low surface tension water.
