English Operating manual Recirculating Coolers °C RS232 FL2503 FL2506 FLW2503 FLW2506 FL4003 FL4006 FLW4003 FLW4006 1.951.4829-V2 19514829-V2.doc 10/13 ALARM FL2506 JULABO GmbH 77960 Seelbach / Germany Tel. +49 (0) 7823 / 51-0 Fax +49 (0) 7823 / 24 91 info@julabo.de www.julabo.de Print date: 08.10.
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.
TABLE OF CONTENTS 1. Intended use ................................................................................................................................. 4 1.1. Description ........................................................................................................................ 4 2. Operator responsibility – Safety instructions ................................................................................ 4 2.1. Disposal ............................................................
1. Intended use JULABO recirculating coolers have been designed for temperature application to specific fluids. The pump connections can be used for cooling applications in an external circuit at a constant temperature. JULABO water baths 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.
Safety recommendations for the operator You received a product conceived for industrial use. Nevertheless, avoid strikes to the housing, vibrations, damages to the keypad foil (keys, display) or contamination. Make sure the product is regularly checked for proper condition. Regularly check (at least every 2 years) the proper condition of the mandatory, warning, prohibition and safety labels.
2.1. Disposal This unit contains the refrigerantr R404A, which at this time is not considered harmful to the ozone layer. However, over the long operating period of the unit, disposal rules may change. Therefore, only qualified personnel should handle the disposal. 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).
2.2.
3. Technical specifications Recirculating Cooler Cooling Working temperature range Temperature stability Temperature selection: via key pad remote control via personal computer Temperature indication: Resolution Temperature control Temperature sensor Excess temperature protection Low liquid level protection Cooling capacity Medium: Mixture water-glycol Cooling compressor Refrigerant °C °C °C °C kW FL2503 FLW2503 air cooled water cooled -20 ... +40 -20 ... +40 ±0.
Recirculating Cooler Cooling Working temperature range Temperature stability Temperature selection: via key pad remote control via personal computer Temperature indication: Resolution Temperature control Temperature sensor Excess temperature protection Low liquid level protection Cooling capacity Medium: Mixture water-glycol Cooling compressor Refrigerant °C °C °C °C kW FL2506 FLW2506 air cooled water cooled -20 ... +40 -20 ... +40 ±0.
Recirculating Cooler Cooling Working temperature range Temperature stability Temperature selection: via key pad remote control via personal computer Temperature indication: Resolution Temperature control Temperature sensor Excess temperature protection Low liquid level protection Cooling capacity Medium: Mixture water-glycol Cooling compressor Refrigerant °C °C °C °C kW FL4003 FLW4003 air cooled water cooled -20 ... +40 -20 ... +40 ±0.
Recirculating Cooler Cooling Working temperature range Temperature stability Temperature selection: via key pad remote control via personal computer Temperature indication: Resolution Temperature control Temperature sensor Excess temperature protection Low liquid level protection Cooling capacity Medium: Mixture water-glycol Cooling compressor Refrigerant °C °C °C °C kW FL4006 FLW4006 air cooled water cooled -20 ... +40 -20 ... +40 ±0.
Warning functions and safety installations Excess temperature protection Low liquid level protection Alarm message Excess temperature - Warning function Overload protection Classification according to DIN 12876-1 85 °C - fixed value float switch optical + audible (permanent) 75 °C for compressor and pump motor class I 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.
3.1. Cooling water connection Only for water cooled models - FLW: Cooling water pressure (IN / OUT ) Difference pressure (IN - OUT ) Flow rate on FLW250x Flow rate on FLW400x Cooling water temperature max.
4. 4.1. Safety notes for the user Explanation of safety notes In addition to the safety warnings listed above, warnings are posted throughout the 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. Warning: Describes a possibly highly dangerous situation.
surrounding walls. Make sure that the tubing is securely attached. Regularly check the tubing for material defects (e.g., for cracks). Never operate damaged or leaking equipment. Always turn off the unit and disconnect the mains cable from the power source before performing any service or maintenance procedures, or before moving the unit. Always turn off the unit and disconnect the mains cable from the power source before cleaning the unit. Always empty the bath before moving the unit.
5. Installation Place the unit on an even surface on a base made of nonflammable material. Using the castors (10a, 10b) move the unit to the intended location. For better stability, apply the holding breaks on the front casters (10a). Cooling machine, pump motor and electronics produce intrinsic heat that is dissipated via the venting openings.! Never cover these openings! Keep at least 20 cm of open space on the front and rear venting grids.
Even high quality heat exchangers as they are installed in our equipment can be damaged by unsuitable cooling water. The quality of the cooling water depends on the local conditions. The heat exchanger may become leaky due to corrosion or it may become clogged due to particulate matter Caution: Pump pressure Determine and check the max. admissible pressure for the external circuit before putting the unit into operation. The max. pressure is determined by the weakest element in the circuit (e. g.
5.1. Tubing Caution: Employ suitable connecting tubing. Make sure that the tubing is securely attached. Avoid sharp bends in the tubing, and maintain a sufficient distance from surrounding walls. Regularly check the tubing for material defects (e.g. for cracks). Preventive maintenance: Replace the tubing from time to time. Recommended tubing: Order No. 8930319 8930325 Description 1 m Reinforced tubing ¾“ inner dia. (-40 ... +120°C) 1 m Reinforced tubing 1“ inner dia. (-40 ...
6.
Keypad, spash-water protected 2.0 2.1 Edit keys (set point increase or decrease) 2.2 Enter key Store set point value / parameter 3.0 Indication °C 3.1 LED temperature display 3.2 Control indicator – Cooling 3.
7. 7.1. Operating procedures Bath fluids Caution: No liability for use of other bath liquids! Please contact JULABO before using other than recommended bath fluids. JULABO takes no responsibility for damages caused by the selection of an unsuitable bath fluid Do not use alcohols. 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.
7.3. Filling Notice: Risk of injury for hands. Close cover carefully. Take care that no liquid enters the interior of the circulating cooler. Top view Connect the tubing from the external system to the pump connectors and check for leaks Push Respect instructions from page 16 to page 19! Check to make sure that the drain tap (9) is closed. Push °C Unlock and open lid of fill in opening (4) by slightly pushing. Fill in tempering fluid up to marking „H“ of the filling level indicator.
7.5. Setting the feed pressure max. Set the max. permissible feed pressure (example: 2 bar) by slowly closing the adjusting valve (13) on the rear and looking at the manometer (5). The max. pressure is determined by the weakest element in the circuit (e. g. glass equipment). 7.6. Setting the temperatures Factory setting: 7.7. 25 °C Setting can be carried out in the start/stop condition. 1. Press one of the keys for a short moment.
7.8. Remote control: activate – deactivate The recirculating cooler is to be prepared for remote control by a personal computer via the serial interface RS232. Set the interface item from >IOFF< to >ION<. Remote control: activate – deactivate: (Interface OFF) Switch off recirculating cooler by pressing the mains switch and wait approx. 5 seconds. Keep depressed the keys and enter simultaneously and turn on the unit with the mains power switch.
9. Troubleshooting guide / Error messages + Whenever the microprocessor electronics registers a failure, a complete shutdown of the compressor 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 enter to quit the audible signal. The recirculating cooler is operated without bath fluid, or the liquid level is insufficient.
Warning without a complete shutdown of the unit Excess temperature warning starting at 75 °C The return temperature soon reaches the swith-off value of the high temperature protection (85 °C). Cooling of the condenser is affected. (see page 32) Clean air-cooled condenser. Check the flow rate and cooling water temperature on water-cooled condenser. If the unit cannot be returned to operation, contact an authorized JULABO service station. Disturbances that are not indicated.
10. 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.
11. Remote control 11.1. Setup for remote control 5 9 1 RS232 6 Check the interface parameters for both interfaces (on recirculating cooler and PC) and make sure they match. Interface parameters are pre-determined. Type RS232 Baudrate 4800 bauds Parity even Handshake hardware handshake 11.2. Communication with a PC or a superordinated data system If the recirculating cooler is put into remote control mode the MULTI-DISPLAY (LED) will read „R -OFF-„ = REMOTE STOP.
The out commands are valid only in remote control mode. Examples: Command to set the working temperature to15,5 °C: out_sp_00 15.5 Command to ask for the working temperature in_sp_00 Response from the recirculating cooler: 15.5 LF 11.3. List of commands out commands: Setting parameters or temperature values. Command Parameter Response of recirculating cooler out_mode_05 0 out_mode_05 1 Stop the unit = R –OFF-. Start the unit. out_sp_00 xxx.
11.5. Error messages Error messages Description -01 LOW LEVEL ALARM Low liquid level alarm. -05 WORKING SENSOR ALARM Working temperature sensor short-circuited or interrupted. -03 EXCESS TEMPERATURE WARNING High temperature warning. Starting at 75 °C (no deactivation) The return temperature soon reaches the switch-off value of the high temperature warning function (85 °C) -07 I2C-BUS ERROR Internal error when reading or writing the I2C bus. -08 INVALID COMMAND Invalid command.
12. 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. Service and repair work may be performed only by authorized electricians. Notice: Risk of injury for hands when mounting the venting grid. Maintaining the cooling performance °C Air cooled models = FL RS232 ALARM To maintain the full cooling performance, clean the condenser from time to time.
Cleaning: Clean the outside of the unit using a wet cloth and low surface tension water. 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.
12.1. 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. This software is available as a free download from www.julabo.com \ EasyBlackBox. Installation is easy and is performed step by step. Please observe the instructions.
12.2. Draining Notice: Store and dispose the used bath fluid according to the laws for environmental protection. Risk of injury for hands when mounting the venting grid. °C RS232 ALARM °C RS232 ALARM Turn off the unit and disconnect the mains cable from the power source. Hold the venting grid, pull out and remove. Slide a short piece of tube onto the drain port and hold it into a pail. Open the drain tap and empty the unit completely.
14. Warranty conditions JULABO GmbH warrants its products against defects in material or in workmanship, when used under appropriate conditions and in accordance with appropriate operating instructions for a period of ONE YEAR. Extension of the warranty period – free of charge With the ‘1PLUS warranty’ the user receives a free of charge extension to the warranty of up to 24 months, limited to a maximum of 10 000 working hours.
