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Summary of Contents for Julabo FN25-HL
- Page 1 English Operating Manual Refrigerated/Heating Circulators FN25-HL FN32-HL JULABO GmbH 77960 Seelbach / Germany Tel. +49 (0) 7823 / 51-0 +49 (0) 7823 / 24 91 info.de@julabo.com www.julabo.com 1.951.2819-V4 03/16 19512819-V4.doc 23.03.16...
- Page 2 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.
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Page 3: Table Of Contents
1.1. Description ....................... 5 Operator responsibility – Safety recommendations ............6 2.1. Disposal ........................7 2.2. General safety notes for natural refrigerants in JULABO units........8 2.3. EC Conformity ......................9 2.4. Warranty conditions ....................12 2.5. Technical specifications ..................13 Operating instructions ....................... - Page 4 12.3. List of commands ....................87 12.4. Status messages ....................91 12.5. Error messages....................... 91 13. Installation of electronic module with analog connectors ..........92 14. JULABO Service – Online remote diagnosis ............... 93 15. Cleaning / repairing the unit ..................94...
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Page 5: Operating Manual
Operating manual Intended use The JULABO refrigerated circulators employ a circulator head and a cooling machine with bath tank, and have been designed for heating and cooling of specific liquids in the bath tank. The units feature pump connections for temperature control of external systems (loop circuit). -
Page 6: Operator Responsibility - Safety Recommendations
Operator responsibility – Safety recommendations Operator responsibility – Safety recommendations 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. -
Page 7: Disposal
Colors: yellow, black Hot surface warning. (The label is put on by JULABO) Observe the instructions in the manuals for instruments of a different make that you connect to the circulator, particularly the respective safety recommendations. Also observe the pin assignment of plugs and technical specifications of the products. -
Page 8: General Safety Notes For Natural Refrigerants In Julabo Units
Operator responsibility – Safety recommendations 2.2. General safety notes for natural refrigerants in JULABO units The refrigerant is flammable. To guarantee the well established JULABO quality and operational reliability the unit conforms to highest safety standards and all other applicable standards and EC directives. -
Page 9: Ec Conformity
2.3. EC Conformity... - Page 10 Operator responsibility – Safety recommendations...
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Page 12: Warranty Conditions
GmbH’s original invoice. JULABO GmbH reserves the right to decide the validity of any warranty claim. In case of faults arising either due to faulty materials or workmanship, parts will be repaired or replaced free of charge, or a new replacement unit will be supplied. -
Page 13: Technical Specifications
2.5. Technical specifications FN25-HL FN32-HL -28 ... 200 -35 ... 200 Working temperature range °C ±0,01 ±0,01 Temperature stability °C 0 -20 -20 -30 Cooling capacity °C 0.26 0.2 0.06 0.45 0.39 0.15 0.06 Medium: ethanol Refrigerant R290 R290 23x50x64... - Page 14 Operator responsibility – Safety recommendations Electrical connections: External alarm device 24-0 V DC / max. 25 mA Computer interface RS232 or RS485 External Pt100 sensor Optional for HL, SL (Order No. 8900100 Electronic module with analog connections) Programmer input -100 °C to 400 °C = 0 - 10 V or 0 - 20 mA or 4 - 20 mA Input for the signal of a flow meter or external manipulated variable Temperature recorder outputs 0 - 10 V (0 V = -100 °C, 10 V = 400 °C)
- Page 15 • 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.
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Page 16: Operating Instructions
Operating instructions Operating instructions Safety notes for the user 3.1. 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).”... -
Page 17: Safety Recommendations
3.3. Safety recommendations Follow the safety instructions to avoid personal injury and property damage. Also, the valid safety instructions for workplaces must be followed. • Only connect the unit to a power socket with an earthing contact (PE – protective earth)! •... - Page 18 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 •...
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Page 19: Operating Controls And Functional Elements
Operating controls and functional elements Front view Rear view Mains power switch, illuminated for circulator Mains power switch, illuminated for cooling machine VFD COMFORT-DISPLAY Header: Control indicators Line 1: Actual value internal or external The display is depending on the selected control mode in the menu >... - Page 20 Operating controls and functional elements (providing EPROG input set to >Flow rate<) *refer to >MENU / CONFIGIGURATIO> page 37 Control indicators in the header: Heating / Cooling / Alarm / emote control Control indicators in the header: Temperature indication Internal or External actual value Temperature indication in °C or °F Display for the adjusted pump pressure stage in the -OFF- mode.
- Page 21 Keypad 1 Navigation keys 1. Key: >OK< Start / Stop (pump / heater ) 2. >OK< in the menu Menu item / select submenu for setting Save set value Save selected parameter A beep signals the end of setting After the actions Start, Stop and change from VFD Display to standard display the key is locked for a short time.
- Page 22 Socket for external measurement and control sensor or external setpoint programming ext Pt100 Interface RS232 / RS485: remote control via personal computer SERIAL Control cable of JULABO refrigerated circulator Socket: Circulator Socket: Cooling unit Option: Electronic module Order No. 8 900 100 The circulator automatically recognizes the connected electronic module.
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Page 23: Preparations
Preparations 5.1. Installation • Place the unit on an even surface on a pad made of non-flammable material. • 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. - Page 24 Fire or other dangers when using bath fluids that are not recommended: Use only non-acidic and non-corroding 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., •...
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Page 25: Temperature Application To External Systems
Differing flow rates of the pressure and suction pumps should be compensated. To maintain a constant liquid level, the JULABO „D+S“ Level Adapter is recommended for the external bath tank. The flow rate of the pressure pump will be then regulated by a built-in float device. -
Page 26: Tubing
Preparations Backflow safety device If the liquid levels in the circulator bath and the external SERIAL ALARM STAND-BY REG+ Pt100 E-PROG system are at different heights, overflowing must be prevented after the power has been turned off. T16A T16A Flood hazard! T1.25A For this reason, solenoid valves for loop circuit or shut-off valves can be integrated in the loop circuit. -
Page 27: Filling / Draining
Safety recommendations • 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). •... -
Page 28: Operating Procedures
Operating procedures Operating procedures 6.1. 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. •... -
Page 29: Switching On The Cooling Machine
6.2.2. Switching on the cooling machine Switching on: • Switch on the cooling machine using the switch (1b) . Control of the cooling machine: With the mains switch (1b) turned on, the circulator automatically switches the cooling machine off and on. •... -
Page 30: Setting Of Temperatures
Setting of temperatures Setting of temperatures Press the key to call up the menu for temperature selection. 3 different working temperatures can be adjusted. Their values are freely selectable within the operating temperature range. The temperatures can be set in start or stop mode. Setting of working temperature in the menu 1. - Page 31 Warning: The excess temperature protection must be set at least 25 °C below the fire point of the bath fluid used! In case of wrong setting there is a fire hazard! We disclaim all liability for damage caused by wrong settings! SafeTemp: Setting range: 20 °C ...
- Page 32 Safety installations, warning functions The following error message appears on the VFD COMFORT-DISPLAY: for help on the LCD Press Depending on the setting of >ControlType - internal or external< the actual temperature values for both sensors are shown/indicated on both displays.
- Page 33 • Setting >WARNING< A mere warning function with optical and audible warning signal (interval tone) A message appears on the VFD COMFORT-DISPLAY: OverTemp SubTemp The LCD –DISPLAY shows the message: • Setting >ALARM< Temperature limit with shutdown of heater and circulating pump. An audible alarm sounds (continuous tone) and a message appears on the VFD COMFORT-DISPLAY: OverTemp...
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Page 34: Early Warning System, Low Level Protection
Safety installations, warning functions 8.0.1. Early warning system, low level protection This low level protection is independent of the control circuit and is divided into two sections: . 1. Switch in stage 1 recognizes a critical fluid level DBGM: 20306059.8 An audible warning (interval tone) sounds and a message appears on the VFD COMFORT-DISPLAY. -
Page 35: Menu Functions
Menu functions The term „menu functions“ refers to adjustments such as Menu level 1 Start program Page 37 This menu will start a previously set program. Administration and creation of programs Page 42 Electronically adjustable pump capacity Page 46 The capacity of the circulating pump is set by adjusting the motor speed. - Page 36 Menu functions Menu level 1 Adjustable interface parameters Page 60 BAUDRATE, PARITY, HANDSHAKE ATC - Absolute Temperature Calibration, Page 61 Sensor calibration internal sensor, Sensor calibration external sensor 3-point calibration Limitations of temperature and capacity Page 68 Setpoint Max / Min - Maximum and minimum setpoint Heating Max –...
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Page 37: Start Of A Program
9.1. Start of a program The start menu of the integrated programmer allows one of six previously stored temperature programs to be called up and started. The profiles are started manually or via the integrated timer. Requirements: 1. Create a program. (refer to next chapter) 2. - Page 38 Menu functions Level 2 Parameter /Value • Set desired parameters with Confirm >now< with the key and the program will start immediately start at the set time under parameter (time ). Set time in the example below: 09. August 2009, 11:15 hrs ...
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Page 39: Status At The End Of A Program
9.1.1. Status at the end of a program Program end StdBy , PSetp, Setp 1, Setp 2 , Setp 3 This parameter is used to determine if the unit switches to the -OFF- condition at the end of a profile or if temperature control is continued, and the working temperature setpoint that is to be used if temperature control is continued. -
Page 40: Editing After Start
Menu functions 9.1.3. Editing after Start The programmer allows a running program to be edited. Initiation and exit of the editing function: • After the start enter the submenu „3 EDITOR“.by pressing the key See chapter „program administration, creation“ page 42 •... -
Page 41: Interruption After A Power Failure
9.1.5. Interruption after a power failure It is possible to operate the programmer safely in case of a power failure. Important: For this, >Autostart< needs to be set in the >Configuration< menu. If the AUTOSTART function is activated, the programmer starts again at a point approx. -
Page 42: Program Administration, Creation
Menu functions 9.2. Program administration, creation The integrated programmer permits fast and easy programming of setpoint temperature sequences. This temperature sequence is called program. A program is composed of individual sections (Step). The sections are defined by duration (t) or Gradient (°/t) and target temperature. - Page 43 Editing PrgNr: Set the program you wish to create. 0 ... 5 SP : Setpoint TI : Time [hh:mm] or GRD: Gradient [°/t] = [°/min] Change type of program in MENU >configuration<, menu item >Programmtyp/program type< . Step 0 …...
- Page 44 Menu functions Delete It is possible to delete an entire program or consecutive sections Delete PrgNr: Set the program you wish to delete 0 ... 5 Delete from Step X to Step X - (0 … 59) Press the key if a parameter is to be retained.
- Page 45 Print Every program can be printed via the serial interface for control and documentation purposes. Press the key if a parameter is to be retained. (prior to OK) Submenu >Print< Level 2 • Set menu item >Print PrgNr.< by pressing •...
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Page 46: Setting The Pump Pressure
Menu functions 9.3. Setting the pump pressure The capacity of the circulating pump is set by adjusting the motor speed Press the key if a parameter is to be retained. (prior to OK) Submenu >Pump< Level 2 The set pump stage is displayed. -
Page 47: Configuration
9.4. Configuration Press the key if a parameter is to be retained. (prior to OK) Level 2 Parameter level Remote control via serial interface. Possible parameters: off / on Switch on and off remote control by pressing ... - Page 48 Menu functions Level 2 Parameter level Pump-Mode Possible parameters: P. on / P. off • Switch on and off >Off-Mode by pressing P.on continuous operation of circulating pump P.off circulating pump is linked to Start/Stop ActVar - actuating variable Possible parameters: control, Eprog, serial ...
- Page 49 Level 2 Parameter level Reset • Return to factory settings by pressing >Reset?< returns all set values to the factory setting except for date and time. A RESET can be effected only in the – OFF- mode. During the message >Running <...
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Page 50: Remote Control Via The Serial Interface
Menu functions 9.4.1. Remote control via the serial interface Factory setting: off Setpoint is set via the serial RS232/RS485 interface through a PC or superordinated data system. In the header of the VFD COMFORT-DISPLAY, an “ ” illuminates. It indicates that remote control mode is active. ... -
Page 51: Autostart
- Autostart off (Factory setting) Note: The circulator has been configured and delivered 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). -
Page 52: Actvar - Actuating Variable
Menu functions 9.4.5. ActVar - actuating variable The variable (ACTuating VARiable) corresponds to the extent to which the heater or cooling unit of the circulator is controlled. Heat or cold is applied to the bath according to this variable. If this happens with the control electronics of the circulator, called >... -
Page 53: Setting Of Clock And Date
9.4.6. Setting of clock and date The internal real time clock allows starting a program any time. The clock is set to the local mean time (MEZ) at the factory. If the unit is operated in a different time zone, the clock can be adjusted in this menu. -
Page 54: Control
Menu functions 9.5. Control The circulator is designed for internal and external temperature control. This can be switched in this submenu. Only the set of parameters corresponding to the particular setting is displayed. Control internal Control external For external temperature control and measurement connect a Pt100 external sensor to the socket at the rear of the circulator. - Page 55 Control Type internal Parameter-Level • The value flashes. Set by using the numeric keypad and confirm by pressing Example: Setting range: 0.1 … 99.9 K • The value flashes. Set by using the numeric keypad and confirm by pressing Setting range: 3 … 9999 s •...
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Page 56: Control Internal / External
Menu functions 9.5.1. Control internal / external The control type can be adjusted in the -OFF- mode only. Possible parameters: intern internal temperature control extern external temperature control with external Pt100 sensor IMPORTANT: Additional measures for external temperature control. ext. -
Page 57: Selftuning
9.5.2. Selftuning When performing a selftuning for the controlled system (temperature application system), the control parameters Xp, Tn and Tv are automatically determined and stored. Possible parameters: off - no selftuning The control parameters ascertained during the last identification are used for control purposes. -
Page 58: Cospeed - Extern
Menu functions 9.5.4. CoSpeed - extern CoSpeed: This parameter affects the temperature pattern only in case of external control. Possible parameters: 0 ... 5 During selftuning, the control parameters Xp, Tn, °C Int. temperature and Tv of a controlled system are automatically determined and stored. - Page 59 Optimization instructions for the PID control parameters: optimum setting The heat-up curve reveals inappropriate control °C settings. Inappropriate settings may produce the following heat-up curves: Xp too low Tv/Tn too low °C °C Xp too high or Tv too high Tv/Tn too high or Xp too high °C °C...
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Page 60: Serial Interface
Menu functions 9.6. Serial Interface For communication between the circulator and a PC or a superordinated Factory settings: process system, the interface parameters of both units must be identical. 4800 Baud even The adjustment is usually carried out one time only in the >Interface serial< hardware handshake menu. -
Page 61: Atc Absolute Temperature Calibration, 3-Point Calibration
9.7. ATC Absolute Temperature Calibration, 3-point calibration ATC is used to compensate for a temperature difference between the circulator and a defined measuring point in the bath tank that may develop for physical reasons. internal external Principle: For ATC calibration, in steady state the bath temperature at the location Example: of the temperature sensor (CT) is determined at the respective adjusted 1-point calibration... - Page 62 Menu functions Press the key if a parameter is to be retained. (prior to OK) Level 2 Parameter-Level • The parameter flashes, switch by pressing The parameter flashes, switch by pressing >no< Carry out an ATC calibration ...
- Page 63 The value >TmpValue< is only indicated In addition the measured temperature value >CalValue X< is saved during the next step. • The value flashes. Set by using the numeric keypad and confirm by pressing If only a 2-point calibration is carried out, the following menu items are not indicated anymore The value >TmpValue<...
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Page 64: Atc Fühler - Intern / Extern
Menu functions 9.7.1. ATC Fühler - intern / extern In the first submenu the ATC function is set for the >intern< internal or the >extern< external temperature sensor. Calibration can be carried out for the internal temperature sensor and for the external temperature sensor connected to the socket „ext. -
Page 65: Example: 3-Point Calibration For Internal Control
9.7.4. Example: 3-point calibration for internal control In the temperature range from 80 °C to 160 °C the calibration curve of the temperature sensor (TT) is to be adjusted to the actual temperatures at measuring point (CT). 1. Set circulator to internal control: ... - Page 66 Menu functions The value >TmpValue< is only indicated. In addition the measured temperature value >CalValue X< is saved during the next step. • The value flashes. Set by using the numeric keypad and confirm by pressing Return to 2. Set working temperature value: 120.00 °C The value >TmpValue<...
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Page 67: Limits
9.8. Limits The >Limits< menu allows the minimum and maximum values to be set for all important setting ranges and capacity variables. Control internal Control external Press the key if a parameter is to be retained. (prior to OK). ... -
Page 68: Limits For Internal Control And External Control
Menu functions • The parameter flashes. Set by using the numeric keypad and confirm by pressing • The parameter flashes. Set by using the numeric keypad and confirm by pressing • The parameter flashes. Set by using the numeric keypad and confirm by pressing ... -
Page 69: Limits For External Control
9.8.2. Limits for external control INTERN MAX / MIN Restriction for the temperature range of the internal bath. Setting range: -94,9 °C ... +300,0 °C The limits IntMax and IntMin are only active in external control. IntMax and IntMin determine fixed limits for the temperature within the internal bath. -
Page 70: Analog Inputs/Outputs
Menu functions 9.9. Analog inputs/outputs In order to use the analog inputs and outputs, the circulator must be equipped with the electronic module, which is available as option. Order No. 8 900 100 Electronic module ALARM STAND-BY REG+ E-PROG This submenu enables the input and output values to be set for the programmer input and the temperature recorder outputs of the REG+E- PROG socket. - Page 71 Level 2 Level 3 Parameter-level Define the output value for channel 1 Possible parameters: ActInt, ActExt, Power, Setpoint • The parameter flashes, switch by pressing Select the scale for channel 1. • The value flashes. Set by using the numeric keypad and confirm by pressing •...
- Page 72 Menu functions Level 2 Level 3 Parameter-level Define the output value for channel 3 Possible parameters: ActInt, ActExt, Power, Setpoint • The parameter flashes, switch by pressing Select the scale for channel 3. • The value flashes. Set by using the numeric keypad and confirm by pressing •...
- Page 73 Level 2 Level 3 Parameter-level Possible parameters: voltage, current • The parameter flashes, switch by pressing • The value flashes. Set by using the numeric keypad and confirm by pressing • The value flashes Set by using the numeric keypad and confirm by pressing ...
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Page 74: Control Connector
Menu functions Level 2 Level 3 Parameter-level Possible parameters: normal, inverse • The parameter flashes, switch by pressing 9.9.1. Control connector Control connector (14): SV-Out >Backflow< or >C-Pulse< or >Refill< The control output (14) can be adapted to solenoid valves for different tasks. -
Page 75: Outputs Of The Connector - Reg+E-Prog
9.9.2. Outputs of the connector - REG+E-PROG Outputs of the connector 1. First define the desired output value for channels 1 to 3: ActInt internal actual temperature value (bath temperature) ActExt external actual temperature value (external sensor) Power periodic or intermittent heating or cooling Setpoint active setpoint temperature (setpoint 1, 2, 3/integr. -
Page 76: Input Of The Connector - Reg+E-Prog
Menu functions 9.9.3. Input of the connector - REG+E-PROG E-PROG - Input Setting is necessary if Menu >Configuration< 1. the Setpoint is to be set via an external voltage or current source or programmer For this, in the menu >Configuration<, first set the menu item >Setpoint<... - Page 77 After returning the LCD display to standard display by pressing the , the temperature value adjusted and set on the external voltage or current source is displayed in line 1 (Example: Eprog 50.00 °C). This EPROG input enables the use of different voltage and current values as program parameters.
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Page 78: External Stand-By Input
Menu functions 9.9.4. External Stand-by input Ext. StBy (External STAND-BY input) Stand-By input for external switch-off. Possible parameters: inactive - Stand-By input is ignored active - Stand-By input is active Activate the standby input: 1. Under menu item >Ext. StBy<, set the parameter to >active<. 2. -
Page 79: Alarm-Output
9.9.5. Alarm-output Alarm output (10) (for external alarm signal) This socket is a potential-free change-over contact. With the adjustments in the menu >Inputs/Outputs<, all operating conditions can be signaled without having to change the pin assignments. Meaning of the terms under menu item >Function< : ALARM The circulator is in condition >StandBy<... -
Page 80: Troubleshooting Guide / Error Messages
The float is defect (e. g., because damaged in transit). Repair by authorized JULABO service personnel. During the self-test after switch-on a short-circuit is registered between pin 2 and pin 4 of the control cable or the control cable is interrupted during operation. - Page 81 Defect of the working or excess temperature sensor. The working temperature and excess temperature sensors report a temperature difference of more than 35 K. Other errors (I C-BUS errors) Error in A/D converter Excess temperature sensor is defective. The safety temperature is below the working temperature setpoint. Set the safety temperature to a higher value.
- Page 82 Replenish the bath tank with bath fluid. After eliminating the malfunction, turn the mains power switch off and on again to cancel the alarm state. If the unit cannot be returned to operation, contact an authorized JULABO service center. Special message “CONFIGURATION ERROR”...
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Page 83: Electrical Connections
11. 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 (e.g. - Page 84 8 900 110 USB interface adapter cable / Control output The connector may only be used for control of a JULABO refrigerated circulator or JULABO MVS Solenoid valve controller for cooling water. Pin assignment: Signal (only with attached JULABO equipment) +24 V (I max.
- Page 85 Programmer input / temperature recorder output Signal 1 Voltage output Channel 1 0 ... 10 V 2 Voltage output Channel 2 0 ... 10 V 3 GND for outputs REG+E-PROG 4 Programmer input EPROG 0 to 10 V / 0 to 20 mA 5 Current output Channel 3 0 to 20 mA / 4 to 20 mA...
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Page 86: Remote Control
Remote control 12. Remote control 12.1. Setup for remote control 1. Check the interface parameters for both interfaces (on the circulator and PC) and make sure they match. In the >Interface< menu, set the menu item >Type< to >RS232< or SERIAL >RS485<. -
Page 87: List Of Commands
Important times for a command transmission: To ensure secure data transfer, the time gap between two commands should be at least 250 ms. The circulator automatically responds to an in command with a data string followed by an LF (Line Feed). The next command should be sent only after 10 ms. - Page 88 Remote control Command Parameter Response of circulator OUT_MODE_03 Set external programmer input to voltage. Voltage 0 V ... 10 V OUT_MODE_03 Set external programmer input to current. Current 0 mA ... 20 mA OUT_MODE_04 Temperature control of internal bath. OUT_MODE_04 External control with Pt100 sensor.
- Page 89 IN commands: Asking for parameters or temperature values to be displayed. Command Parameter Response of circulator VERSION None Version number of the software (V X.xx) STATUS none Status message, error message (see page 91) IN_PV_00 none Current bath temperature. IN_PV_01 none Heating power being used (%).
- Page 90 Remote control Command Parameter Response of circulator IN_PAR_12 none Tv control parameter of the cascade controller. IN_PAR_13 none Adjusted maximum internal temperature of the cascade controller. IN_PAR_14 none Adjusted minimum internal temperature of the cascade controller. IN_PAR_15 none Band limit (upper) IN_PAR_16 none Band limit (lower)
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Page 91: Status Messages
12.4. Status messages Status messages Description 00 MANUAL STOP Circulator in „OFF“ state. 01 MANUAL START Circulator in keypad control mode. 02 REMOTE STOP Circulator in „r OFF“ state. 03 REMOTE START Circulator in remote control mode. 12.5. Error messages Error messages Description -01 LOW LEVEL ALARM... -
Page 92: Installation Of Electronic Module With Analog Connectors
Installation of electronic module with analog connectors Error messages Description -20 WARNING: CLEAN CONDENSOR Cooling of the condenser is impaired. OR CHECK COOLING WATER Clean air-cooled condenser. CIRCUIT OF REFRIGERATOR Check the flow rate and cooling water temperature for a water-cooled condenser. -
Page 93: Julabo Service - Online Remote Diagnosis
14. 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. -
Page 94: Cleaning / Repairing The Unit
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. Repairs...
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