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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.
(e. g. for glass equipment). Operator responsibility – Safety instructions The products of JULABO ensure safe operation when installed, operated, and maintained according to common safety regulations. This section explains the potential dangers that may arise when operating the circulator and also specifies the most important safety precautions to preclude these dangers as far as possible.
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Safet y recommendations for the operat or 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 refrigerant R404A or R452A– at this time considered not to have any negative effects on the ozone layer. However, during the long operating period of the unit, disposal prescriptions may change. So only qualified personnel should take care of disposal. Valid in EU countries See the current official journal of the European Union –...
Current input at 115 V ---- At FL1201 230 V / 50 Hz; 230 V / 60 Hz and FL1203 230 V / 50 Hz All measurements have been carried out at: rated voltage and frequency, ambient temperature: 20 °C 1.800.561.8187...
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Recirculating Cooler FL1701 FLW1701 Cooling air cooled water cooled Working temperature range °C -20 ... +40 -20 ... +40 Temperature stability °C ±0.5 Temperature selection: digital via key pad indication on LED-DISPLAY remote control via personal computer indication on monitor Temperature indication: LED-DISPLAY Resolution...
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Recirculating Cooler FL1703 FLW1703 Cooling air cooled water cooled Working temperature range °C -20 ... +40 -20 ... +40 Temperature stability °C ±0.5 Temperature selection: digital via key pad indication on LED-DISPLAY remote control via personal computer indication on monitor Temperature indication: LED-DISPLAY Resolution...
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The operator undertakes to have maintenance, repair, service, recovery and recycling work carried out by certified personnel who have been authorized by JULABO. All such work must be documented. The operator must keep records and archive them for at least five years.
3.1. Cooling water connection Only for water cooled models - FLW: Cooling water pressure (IN / OUT) max. 6 bar Difference pressure (IN - OUT) 2 bar up to 6 bar Flow rate typical 2.8 l/min Cooling water temperature <20 °C Recommended quality of cooling water: pH –...
Safety notes for the user 4.1. 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).”...
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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). 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.
Connect the tubings for cooling the external system to the pump connectors M16x1 for feed and return (14) Example: FL1201 (air cooled) on the rear of the recirculating cooler. - Feed – Return Connect a piece of tubing to the overflow connector (15) and drain into a suitable vessel, which always has to be placed lower thant the exit „Overflow“.
Order No. Description Suitable for 8 970 456 Shut-off valve for loop circuit, M16x1 FL1201 / FL(W)1701 8 970 454 Shut-off valve G ¾“ FL1203 / FL(W)1703 The following questions shall help to recognize possible dangers and to reduce the risks to a minimum.
Operating controls and functional elements Front view Rear view RS232 ALARM Air cooled model feed pressure not adjustable RS232 ALARM Water cooled model (16) with feed pressure adjusting valve (14) Lifting device for transportation by crane and handle at the front 1.800.561.8187 information@itm.com www.
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Mains power switch, spash-water protected Keypad, spash-water protected Edit keys (set point increase or decrease) Enter key Store set point value / parameter Indication LED temperature display °C Control indicator – Cooling Control indicator – Alarm Protection lid for fill in opening Interface RS232: remote control via personal computer RS232 Alarm output (for external alarm signal)
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Top view Push Protection lid for fill in opening Protection lid for storing place of operating manual Push 1.800.561.8187 information@itm.com www. .com...
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.
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 Respect instructions from page 16 to page 17! Check to make sure that the drain tap (9) is closed.
7.5. Setting the feed pressure Set the max. permissible feed pressure (example: 2 bar) by slowly closing the adjusting valve (14) on the rear and looking at the manometer (7). max. The max. pressure is determined by the weakest element in the circuit (e.
7.7. AUTOSTART ON / OFF 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“...
Safety installations 8.1. Excess temperature protection This safety installation is independent of the control circuit. When the temperature of the bath fluid has reached the safety temperature (85 °C), a complete shutdown of the compressor and pump is effected. The alarm is indicated by optical and audible signals (continuous tone) and on the LED-DISPLAY appears the error message "Error 14".
Cooling of the condenser is affected. (see page 31) 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. 1.800.561.8187 information@itm.com www.
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Disturbances that are not indicated. Overload protection:: a) for cooling machine b) for pump motor After a short cooling interval, the unit will automatically start running. 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.
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.
11.2. 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 recirculating cooler is now operated via the computer. In general, the computer (master) sends commands to the recirculating cooler (slave).
11.3. List of commands out commands: Setting parameters or temperature values. Command Parameter Response of recirculating cooler out_mode_05 Stop the unit = R –OFF-. Start the unit. out_mode_05 Set working temperature out_sp_00 xxx.xx in commands: Asking for parameters or temperature values to be displayed. Command Parameter Response of recirculating cooler...
Error messages Description -12 TEMPERATURE MEASUREMENT Error in A/D converter. ALARM -14 EXCESS TEMPERATURE The return temperature is above the switch-off value of PROTECTOR ALARM the high temperature warning function of 85 °C. Check dimensioning of application. Use a stronger recirculating cooler if necessary. -20 WARNING: CLEAN CONDENSOR OR Cooling of the condenser is affected.
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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:...
12.1. 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. Turn off the unit and disconnect the mains cable from the power source. Hold the venting grid, pull out and remove.
10 000 working hours. To apply for this extended warranty the user must register the unit on the JULABO web site indicating the serial no. The extended warranty will apply from the date of JULABO GmbH’s original invoice.
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