English Operating manual Refrigerated / Heating Circulator F34-ED JULABO GmbH 77960 Seelbach / Germany Tel. +49 (0) 7823 / 51-0 Fax +49 (0) 7823 / 24 91 info@julabo.de www.julabo.de 1.951.0274-V2 19510274-V2.doc 06/13 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.
ED 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, semiluxury 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.
ED Persons: The operator is responsible for the qualification of the personnel operating the units. The operator should be constantly informed about the dangers involved with their job activities as well as preventive actions. Make sure all persons expected to carry out operation, installation and maintenance of the unit read and understand the safety information and operating instructions.
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.
ED 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 F34-ED Working temperature range Temperature stability Temperature selection Temperature indication Resolution Temperature control °C °C °C -30 ... 100 ±0,03 digital LED 0.1 Heater wattage (at 230 V) Heater wattage (at 115V) kW kW 2,0 1,0 Cooling capacity °C +20 Medium ethanol Refrigerant kW 0.45 0.32 0.14 R134a Circulating pump: discharge, max.at 0 bar pressure, max.
ED Safety installations according to IEC 61010-2-010: Excess temperature protection Low liquid level protection Classification according to DIN 12876-1 Alarm indication adjustable from 20 to 120 °C float switch class I optical + audible (permanent) Environmental conditions according to EN 61 010, part 1: Use only indoor. Altitude up to 2000 m - normal zero. Ambient temperature: +5 ... +40 °C (for storage and transportation) Air humidity: Max. rel.
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.
ED 3.3. Safety recommendations Follow the safety recommendations to prevent damage to persons or property. Further, the valid safety instructions for working places must be followed. 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. Operation is permitted with non-flammable liquids only.
Safety notes for the user Caution: The temperature controlling i.e. of fluids in a reactor constitutes normal circulator practice. We do not know which substances are contained within these vessels. Many substances are: inflammable, easily ignited or explosive hazardous to health environmentally unsafe i.e.: dangerous The user alone is responsible for the handling of these substances! The following questions shall help to recognize possible dangers and to reduce the risks to a minimum.
ED 4.
Operating controls and functional elements Adjustable excess temperature protection according to IEC 61010-2-010 7 8a 15 A M P Circulator: Mains circuit breakers (resettable) 15 A 8b Mains fuses for cooling machine: T 10,0 A, D5 x 20 mm 10a 10b Mains power cable with plug for circulator Mains power cable with plug cooling machine 11 Drain port 12 Drain tap 13 Venting grid, removable 14a 14b Pump connector for feed Pump connector for return 15 Connector: Cooling machine control (not in use
ED 5. 5.1. Preparations Installation Place the unit on an even surface on a pad made of non-flammable material. The circulator fitted with a stainless steel bridge is placed on the back of the bath tank leaving the bath open on the front side. Set selector dial for cooling machine (16) in position "0" for operation with ED circulator. Keep at least 20 cm of open space on the front and rear venting grids.
Preparations 5.2. Bath fluids Caution: No liability for use of other bath fluids! Do not use flammable bath fluids! 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. Chloric water can cause pitting corrosion. Distilled and deionized water is unsuitable.
ED 5.3. Filling / Draining Notice: Filling Check the filling level of the bath fluid from time to time. Pump and heater must always be fully covered with the bath fluid! The instrument is not suited for unsupervised continuous operation. 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 (temperature loop) with simultaneous bath internal temperature application. Connecting an external system: Feed 5.5. Return Unscrew the collar nut from the pump connector (14a).
ED 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.
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).
ED Caution: If the circulator is turned off with the mains switch (1a), the refrigerating unit is not switched off simultaneously. Turn off the refrigerating unit with the mains switch (1b) as well. Danger of freezing when water is used as bath fluid! 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.
Operating procedures 6.4. Setting the temperatures Factory setting: 25 °C Setting can be carried out in the start/stop condition. 1. Press one of the keys for a short moment. The setpoint value instead of the actual value is indicated on the display for about 8 seconds. The value can now be changed. 2. Change value: Press to set a higher value. Press to set a lower value. Keep the keys depressed for the value to change fast. 3. Press the 6.5. key to store the value.
ED 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.
Cleaning / repairing the unit 15 A M P Circulator: Mains circuit breakers (resettable) 15 A Cooling machine: Fuse T 10.0 A, dia.5 x 20 mm The mains fuses on the rear of the unit may easily be exchanged as shown on the left. Warning: Before exchanging the fuses, turn off the mains power switch and disconnect the power plug from the mains socket! Only use fine fuses with a nominal value as specified. Example: Manufacturer Wickmann 8. Supplier Wickmann Type G- fuse insert T10,0A 5x20 mm Order No. No.
ED 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. The circulator 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.
