JULABO LH 85 User Manual

Operating Manual

High Dynamic Temperature System

 with integrated programmer

LH 46 LH85

1.951.2785-V2 06/13

JULABO GmbH 77960 Seelbach / Germany Tel. +49 (0) 7823 / 51-0 Fax +49 (0) 7823 / 24 91 info@julabo.de www.julabo.de

19512785-V2.doc Print date: 22.07.13

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.

The JULABO Quality Management System

Temperature control devices for research and industry are developed, produced, and distributed according to the requirements of ISO 9001 and ISO 14001. Certificate Registration No. 01 100044846

Unpacking and inspecting

Unpack the unit and accessories and inspect them for possible transport damage. Damage should be reported to the responsible carrier, railway, or postal authority, and a damage report should be requested. These instructions must be followed fully for us to guarantee our full support of your claim for protecting against loss from concealed damage. The form required for filing such a claim will be provided by the carrier.

Printed in Germany Changes without prior notification reserved

Important: keep operating manual for future use

TABLE OF CONTENTS

OPERATING MANUAL ....................................................................................................... 5

1. INTENDED USE .................................................................................................... 5

1.1. Description ............................................................................................................. 5

2. OPERATOR RESPONSIBILITY – SAFETY RECOMMENDATIONS .................... 6

2.1. Disposal ................................................................................................................. 8

2.2. EC Conformity ....................................................................................................... 8

2.3. Warranty conditions ............................................................................................... 9

2.4. Technical specifications ....................................................................................... 10

2.5. Cooling water connection .................................................................................... 14

OPERATING INSTRUCTIONS ......................................................................................... 15

3. SAFETY NOTES FOR THE USER ...................................................................... 15

3.1. Explanation of safety notes ................................................................................. 15

3.2. Explanation of other notes ................................................................................... 15

3.3. Safety instructions ............................................................................................... 15

4. OPERATING CONTROLS AND FUNCTIONAL ELEMENTS .............................. 18

4.1. The Presto Plus

principle with closed external system ........................................ 22

5. PREPARATIONS ................................................................................................ 23

5.1. Bath fluids ............................................................................................................ 23

5.2. Tubing .................................................................................................................. 25

5.3. Installation ........................................................................................................... 26

5.4. Connect the external consumer ........................................................................... 26

5.5. Cooling water connection .................................................................................... 28

5.6. Power connection ................................................................................................ 29

5.7. Filling ................................................................................................................... 29

5.7.1. Filling of external, closed systems ................................................................ 30

5.8. Degasifying .......................................................................................................... 32

5.9. Draining ............................................................................................................... 32

6. OPERATING PROCEDURES ............................................................................. 34

6.1. Switching on / Selecting the language ................................................................. 34

7. MANUAL OPERATION ........................................................................................ 35

7.1. Start - Stop .......................................................................................................... 35

7.2. Direct setting of the working temperature ............................................................ 36

7.3. Settings in the SET menu .................................................................................... 36

7.3.1. Setting the working temperature ................................................................... 36

7.3.2. Warning functions ......................................................................................... 37

7.3.3. Setting the pump pressure stage .................................................................. 38

7.4. Setting the safety temperature (with shutdown function) ..................................... 38

7.5. Internal / external control ..................................................................................... 40

8. MENU FUNCTIONS ............................................................................................ 40

8.1. Configuration ....................................................................................................... 42

8.2. Control parameters .............................................................................................. 45

8.3. Start of a profile ................................................................................................... 47

8.3.1. Interrupting a profile ...................................................................................... 49

8.4. Integrated programmer ........................................................................................ 50

8.5. Analog inputs/outputs .......................................................................................... 53

8.6. Limits ................................................................................................................... 56

8.7. Interface............................................................................................................... 56

8.8. Sensors ............................................................................................................... 57

8.9. Pump ................................................................................................................... 58

9. TROUBLESHOOTING GUIDE / ERROR MESSAGES ....................................... 59

9.1. Additional warnings and alarm messages LH85 ................................................. 61

10. ELECTRICAL CONNECTIONS ........................................................................... 63

11. REMOTE CONTROL ........................................................................................... 66

11.1. Setup for remote control ...................................................................................... 66

11.2. Communication with a PC or a superordinated data system ............................... 67

11.3. List of commands ................................................................................................ 68

11.4. Status messages / error messages ..................................................................... 71

11.5. Additional error messages LH85 ......................................................................... 73

12. CLEANING THE UNIT ......................................................................................... 75

13. MAINTAINING / REPAIRING THE UNIT ............................................................. 77

Operating manual

1. Intended use

JULABO Temperature Systems have been designed for temperature application to specific fluids in a external closed system (oop circuit). The units feature pump connections for temperature control of external systems (loop circuit).

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

 Besides the cooling unit, the main functional elements are the heater, circulation pump and control

electronics. Via an external Pt100 control sensor, a self-optimizing, electronic proportional temperature control (PID characteristic) adapts the heat supplied to the thermal requirements of the external system.

 The high pump capacity can be reduced by regulating the motor speed in five grades. It may thus

be adapted to sensitive vessels.

 The cooling unit may be cooled with air or water (automatic changeover).  Setting is rapid and simple using the splash-proof keypads. The operating elements consist of the

local operating board with a bright VFD-Info-Display, as well as the removable control module RD connected with a cable. The microprocessor technology allows four temperature values to be stored and indicated on the DIALOG-DISPLAY (LCD) of the control module RD: working temperature, high and low temperature warning limits as well as pump pressure stage.

 The digital RS232 / RS485 port permits modern process engineering without additional interface.  The excess temperature protection (safety temperature), a safety feature functioning independent

of the regulator circuit, is adjusted and indicated via the VFD-Info-Display.

 The integrated programmer allows programming of setpoint and time values for six temperature

profiles.

 The following analog sockets are available:

- The REG+E-PROG socket for setpoint selection via an external, analog programmer. At the same time, this socket provides three analog outputs for temperature recorders.

- The external Pt100 socket for external control.

- The alarm output for an external signal.

- The stand-by input for external emergency switch-off.

Operator responsibility – Safety recommendations

2. 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.

The operator is responsible for the qualification of the personnel operating the units.

 The personnel operating the units should be regularly instructed about the dangers involved with

their job activities as well as measures to avert these dangers.

 Make sure all persons tasked with operating, installing, and maintaining the unit have read and

understand the safety information and operating instructions.

 When using hazardous materials or materials that could become hazardous, the circulator may be

operated only by persons who are absolutely familiar with these materials and the unit. These persons must be fully aware of possible risks.

If you have any questions concerning the operation of your unit or the information in this manual, please contact us!

Contact:

Safety instructions for the operator:

 Avoid strikes to the housing, vibrations, damage to the operating-element panel (keypad, display),

and contamination.

 Make sure the product is checked for proper condition regularly (depending on the conditions of

use). Regularly check (at least every 2 years) the proper condition of the mandatory, warning, prohibition and safety labels.

 Make sure that the mains power supply has low impedance to avoid any negative effects on the

instruments being operated on the same mains.

 This unit is designed for operation in a controlled electromagnetic environment. This means that

transmitting devices (e.g., cellular phones) should not be used in the immediate vicinity.

 Magnetic radiation may affect other devices with components sensitive to magnetic fields (e.g.,

monitors). We recommend maintaining a minimum distance of 1 m.

 Permissible ambient temperature: max. 40 °C, min. 5 °C.  Permissible relative humidity: 50% (40 °C).

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

 Do not store the unit in an aggressive atmosphere. Protect the unit from contamination.  Do not expose the unit to sunlight.

Appropriate operation

Only qualified personnel is authorized to configure, install, maintain, or repair the unit. Persons who operate the circulator must be trained in the particular tasks by qualified personnel. The summarized user guidance (short manual) and the specification table with information on individual parameters are sufficient for this.

Use

The bath can be filled with flammable materials. Fire hazard! There might be chemical dangers depending on the bath medium used. Observe all warnings for the used materials (bath fluids) and the respective instructions (safety data sheets). Insufficient ventilation may result in the formation of explosive mixtures. Only use the unit in well ventilated areas. Only use recommended materials (bath fluids). Do not use poisonous, vitriolic or corrosive bath fluids.

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:

or 2

Particular care and attention is necessary because of the wide operating range. There are thermal dangers: Burn, scald, hot steam, hot parts and surfaces that can be touched.

Warning label W00: Colors: yellow, black Danger area. Attention! Observe instructions. (operating manual, safety data sheet)

Mandatory label M018: Colors: blue, white Carefully read the user information prior to beginning operation. Scope: EU

Semi S1-0701 Table A1-2 #9 Carefully read the user information prior to beginning operation. Scope: USA, NAFTA

Warning label W26: 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 corresponding safety instructions. Also observe the pin assignment of plugs and technical specifications of the products.

Operator responsibility – Safety recommendations

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, follow the instructions in the material safety data sheets.

This unit contains the refrigerants R404A and R23 , which at this time are 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). This directive requires electrical and electronic equipment marked with a crossedout trash can to be disposed of separately in an environmentally friendly manner. Contact an authorized waste management company in your country. Disposal with household waste (unsorted waste) or similar collections of municipal waste is not permitted!

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.

Low voltage regulations with respect to legal harmonization of the member countries concerning

electric devices for use within certain voltage limits.

EMC guideline with respect to legal harmonization of the member countries concerning

electromagnetic compatibility.

JULABO GmbH Eisenbahnstr. 45 77960 Seelbach / Germany

2.3. 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.

To apply for this extended warranty the user must register the unit on the JULABO web site

www.julabo.de

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.

Any other compensation claims are excluded from this guarantee.

, indicating the serial no. The extended warranty will apply from the date of JULABO

Operator responsibility – Safety recommendations

2.4. Technical specifications

LH 46 LH 85 Mains power connection 230/50 V/Hz 207-253V/50Hz 207-253V/50Hz Current draw (at 230 V) A 15 16

Working temperature range °C -45 ... 250 -80 ... 250 Temperature stability K ±0,01 ... ±0,05 ±0,01 ... ±0,05

Cooling capacity pump pressure stage 1 pump pressure stage 5 (bath liquid: Thermal / Ethanol)

Cooling compressor cooling with

°C

200 / 20 -20 -40

2.5 / 2.4 0.78 0.15

2.3 / 2.3 0.74 0.04

1-stage

air / water

100 / 20 -20 -40 -60 -80

1.36 / 1.02 0.81 0.68 0.4 0

1.2 / 0.9 0.67 0.54 0.37 0

2-stage

air / water Refrigerant R404A R23 / R404A Cooling water : Flow rate

l/h 360 198

at 15 °C inlet temperature Heater wattage kW 1,8 1,8

Pressure pump, adjustable pressure min ... max. at 0 liter

discharge, max. at 0 bar

grade bar l/min

0.5 16

0.7 19

1.1 23

1.3 26

5 1,7

30 maximum permissible viscosity is 50 mm² / s. Noise level, 1 m distance dBA ----- ----Ambient temperature °C 5 ... 40 5 ... 40

Filling volume Heat exchanger Reservoir

liters liters

2.5

1.2 … 3.4

2.5

1.2 … 3.4 Overall dimensions (WxDxH) cm 50x59x64 50x59x64 Weight kg 103 130

All measurements have been carried out at: rated voltage and frequency ambient temperature: 20 °C Technical changes without prior notification reserved.

Pump data in relation to fluids with a specific density of 1 kg/dm3

LH 46 LH 85 Mains power connection 230/60 V/Hz 207-253V/60Hz 207-253V/60Hz Current draw (at 230 V) A 15 16

Working temperature range °C -45 ... 250 -80 ... 250 Temperature stability K ±0,01 ... ±0,05 ±0,01 ... ±0,05

Cooling capacity pump pressure stage 1 pump pressure stage 5 (bath liquid: Thermal / Ethanol)

Cooling compressor cooling with

°C kW kW

200 / 20 -20 -40

2.5 / 2.35 0.72 0.13

2.3 / 2.28 0.67 0.03

1-stage

air / water

100 / 20 -20 -40 -60 -80

1.35 / 1.02 0.85 0.76 0.52 0.01

1.2 / 0.9 0.71 0.62 0.49 0.01

2-stage

air / water Refrigerant R404A R23 / R404A Cooling water : Flow rate

l/h 360 198

at 15 °C inlet temperature Heater wattage kW 1,8 1,8

Pressure pump, adjustable pressure min ... max. at 0 liter

discharge, max. at 0 bar

grade bar l/min

0.5 16

0.7 19

1.1 23

1.3 26

5 1,7

30 maximum permissible viscosity is 50 mm² / s. Noise level, 1 m distance dBA ----- ----Ambient temperature °C 5 ... 40 5 ... 40

Filling volume Heat exchanger Reservoir

liters liters

2.5

1.2 … 3.4

2.5

1.2 … 3.4 Overall dimensions (WxDxH) cm 50x59x64 50x59x64 Weight kg 103 130

All measurements have been carried out at: rated voltage and frequency ambient temperature: 20 °C Technical changes without prior notification reserved.

Pump data in relation to fluids with a specific density of 1 kg/dm3

Operator responsibility – Safety recommendations

Temperature selection digital via Removable control module RD indication on DIALOG-Display (LCD) remote control via personal computer indication on monitor Temperature indication VFD-Info-Display DIALOG-DISPLAY (LCD) Resolution K 0.01 from -9.99 °C to +249.99 °C Pump pressure display on VFD-Info-Display in five grades Liquid level display on VFD-Info-Display in five grades Absolute Temperature Calibration (ATC1) K ±3 (ATC2) K ±9 Temperature control ICC - Intelligent Cascade Control, self-optimizing Cascade, parameter can be called-in and modified Working temperature sensor Pt 100 Safety temperature sensor Pt 100

Electrical connections:

Computer interface RS232 or RS485 Programmer input -100 °C to 400 °C = 0 to 10 V or 0 to 20 mA or 4 to 20 mA Temperature recorder outputs 0 to 10 V (0 V = -100 °C, 10 V = 400 °C) 0 to 20 mA (0 mA = -100 °C, 20 mA = 400 °C) 4 to 20 mA (4 mA = -100 °C, 20 mA = 400 °C)

Stand-by input External alarm device 24-0 V DC / max. 25 mA External measurement and control sensor Pt100, 4-lead technique Control connector (10) Output voltage: 230 V / max. 0.1 A

Safety installations according to IEC 61010-2-010:

Excess temperature protection >TANK< adjustable from 0 °C ... 320 °C Excess temperature protection >RES< adjustable from 0 °C ... 220 °C Low level protection float switch

Liquid level display optical, 5-graded Classification according to DIN 12876-1 class III FL Supplementary safety installations High temperature warning function optical + audible (in intervals)

Low temperature warning function optical + audible (in intervals) Supervision of the working sensor plausibility control Reciprocal sensor monitoring between

working and safety sensors difference >50 K Alarm indication optical + audible (permanent)

Environmental conditions according to IEC 61 010-1:

 Use only indoor.  Altitude up to 2000 m - normal zero.  Ambient temperature: see Technical specifications  Air humidity:

Max. rel. humidity 80 % for temperatures up to +31 °C, linear decrease down to 50 % relative humidity at a temperature of +40 °C

 Max. mains fluctuations of ±10 % are permissible.  Overvoltage category II  Pollution degree 2

Caution:

The unit is not suitable for use in explosive environment

Protection class according to IEC 60 529: IP20 The unit corresponds to Class I

Standards for interference resistance according to EN 61326-1 This unit is an ISM device classified in Group 1 (using high frequency for internal purposes) Class A (industrial and commercial range).

Operator responsibility – Safety recommendations

2.5. Cooling water connection

Cooling water pressure (IN / OUT ) max. 6 bar Difference pressure (IN - OUT ) 3.5 to 6 bar Cooling water temperature <20 °C

Notice: Cooling water circuit

Risk of oil leaking from the refrigeration system (compressor) of the recirculating cooler into the cooling water in case of a fault in the cooling water circuit! Observe the laws and regulations of the water distribution company valid in the location where the unit is operated.

Notice:

Danger of corrosion of heat exchanger due to unsuitable quality of cooling water.

 Due to its high content of lime hart water is not suitable for cooling and causes

calcination of the heat exchanger.

 Ferrous water or water containing ferrous particles will cause formation of rust

even in heat exchangers made of stainless steel.

 Chlorous water will cause pitting corrosion in heat exchangers made of stainless

steel.

 Due to its corrosive characteristics distilled and deionized water is unsuitable and

will cause corrosion of the bath. .

 Due to its corrosive characteristics sea water is not suitable.  Due to its microbiological (bacteria) components which settle in the heat

exchanger untreated and unpurified river water and water from cooling towers is unsuitable.

 Avoid particulate matter in cooling water.  Avoid putrid water.

Recommended quality of cooling water:

pH Sulfate [SO4 2- ] Hydrocarbonate [HCO 3-]/sulfate [SO4 2-] Hardness [Ca 2+, Mg 2+]/[HCO 3-] Alkalinity Conductivity Chloride (Cl -) Phosphate (PO4 3-) Ammonia (NH3) Free chlorine Trivalent iron ions (Fe 3+) Manganese ions (Mn 2+) Carbon dioxide (CO2) Hydrogen sulfide (H2S) Content of oxygen Algae growth

Suspended solids impermissible

7.5 to 9.0 < 100 ppm > 1 ppm



> 0.5 60 ppm < [HCO 3-] < 300 ppm < 500 μS/cm < 50 ppm < 2 ppm < 0.5 ppm < 0.5 ppm < 0.5 ppm < 0.05 ppm < 10 ppm < 50 ppm < 0.1 ppm impermissible

Operating instructions

3. Safety notes for the user

3.1. 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).” The danger is classified using a signal word. Read and follow these important instructions.

Warning:

Describes a possibly highly dangerous situation. If these instructions are not followed, serious injury and danger to life could result.

Caution:

Describes a possibly dangerous situation. If this is not avoided, slight or minor injuries could result. A warning of possible property damage may also be contained in the text.

Notice:

Describes a possibly harmful situation. If this is not avoided, the product or anything in its surroundings can be damaged.

3.2. Explanation of other notes

Note!

Draws attention to something special.

Important!

Indicates usage tips and other useful information.

3.3. Safety instructions

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 freely accessible.

 Place the instrument on an even surface on a pad made of non-inflammable

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.

 Set the safety temperature.  Never operate the unit without bath fluid in the bath.  Pay attention to the thermal expansion of bath oil during heating to avoid

Safety notes for the user

overflowing of the fluid.

 Prevent water from penetrating into the hot bath oil.  Do not drain the bath fluid while it is hot!

Check the temperature of the bath fluid prior to draining (by switching the unit on for a short moment for example).

 Employ suitable connecting tubing.  Avoid sharp bends in the tubing, and maintain a sufficient distance from

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.  Transport the unit with care.  Sudden jolts or drops may cause damages in the interior of the unit.  Observe all warning labels.  Never remove warning labels.  Never operate equipment with damaged mains power cables.  Repairs are to be carried out only by qualified service personnel.

 Some parts of the bath cover and the pump connections may become extremely

warm during continuous operation. Therefore, exercise particular caution when

The following questions shall help to recognize possible dangers and to reduce the

touching these parts.

Caution:

The temperature controlling i.e. of fluids in a reactor constitutes normal temperature system 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!

risks to a minimum.

 Are all tubes and electrical cables connected and installed?

Note: sharp edges, hot surfaces in operation, moving machine parts, etc.

 Do dangerous steams or gases arise when heating?

Is an exhaust needed when working?

 What to do when a dangerous substance was spilled on or in the unit?

Before starting to work, obtain information concerning the substance and determine the method of decontamination.



Caution: Escape of vapors / gas

The necessity of degassing requires that a closed system is not entirely sealed. Especially at increased working temperatures vapor / gas may escape.

Ensure sufficient ventilation at the place of installation!

Notice:

When you have finished the application, it is recommended to keep on circulating the liquid in the bath or the external system for some time. Simultaneously set the working temperature to +20 °C to allow the temperature in the system to decrease slowly. Thus fractional over-heating of the bath liquid is prevented.

Notice:

Please check the safety device from time to time.

 Excess temperature protection according to IEC 61010-2-010

With a screw driver turn back the adjustable excess temperature protection until the shut-down point (actual temperature).

 Low level protection

To check the function of the float of this unit it cannot be operated manually. The 5-graded level display should therefore be observed whenever refilling. If the bath liquid thickens or cracks, the instrument should be cleaned and checked by qualified personnel.

Operating controls and functional elements

4. Operating controls and functional elements

Front view

1 Mains power switch, illuminated 2 Local operating board 3 Socket board 4 Removable control module RD

2 Local operating board

2.1

5 Filling funnel (hinged) 6 Handle (foldaway) 7 Venting grid, removable 8 Drain with drain port

VFD-Info-Display

Header: Control indicators see section 2.2 Line 1: Actual value Int or Ext

To swap, press the key Line 2: Working temp. setpoint, constantly S xxx.xx

or indication of the safety temperature (TANK) Line 3: Miscellaneous values

To swap, press the key or indication of the safety temperature (RES)

(see below)

2.2

Control indicators in the header: Heating / Cooling / Alarm / Remote control Temperature indication Internal or External actual value Temperature indication in °C or °F

2.3

2.4 Int

S 120 .00 E 120 .00

2.5

TANK 150

RES 80

2.6

Display for the adjusted pump pressure stage (five grades), adjustable via the key

Liquid level display (five grades) for the reservoir.

Key to swap line 3 on the VFD ID xx Identification no. of control module RD L xx Capacity in % E xxx.xx or I xxx.xx Actual value (external or internal) P x.xx Pump pressure in bar Key to swap line 1 on the VFD Actual value Int or Ext alternating with line 3

Key to indicate the safety temperature on the VFD Line 2: TANK - Safety temperature in internal bath

Line 3: RES - Safety temperature in internal reservoir Adjustable excess temperature protection (safety temperature)

Used for setting the safety temperature in the internal bath, called "TANK" on the display

2.7

Adjustable safety temperature. Used for setting the safety temperature in the internal reservoir,

2.8

called "RES" on the display Key for automatic filling and air purge of the unit as well as the

connected external system.

3 Socket board

3.1

Programmer input and temperature recorder output

REG+E-PROG

3.2

Stand-by input (for external emergency switch-off)

STAND-BY

3.3

Alarm output (for external alarm signal)

ALARM

3.4

Connector for external measurement and control sensor

EXT. Pt100

3.5

SERIAL

Interface RS232/RS485

3.6

Connector: control cable of control module RD

Operating controls and functional elements

4.0

Control module RD

Setp: 120. 00 °C IntAct 21.00°C ExtAct : 20. 00 °C Contro l: Intern

DIALOG-DISPLAY (LCD) Standard indication Line 1: Setpoint in °C Line 2: Internal actual value in °C Line 3: External actual value in °C Line 4: Control type: internal / external control Indicating messages (e. g. warnings)

4.1

4.2

4.3

4.4

4.5

>Setp. : 12 0. 00 °C Overt.:255.00°C Subtmp:-55.00°C St.Pump: 2

>Configuration Control param. Profile Start Int. Programmer

Start / stop key To switch the circulation pump, heating element and cooling unit.

SET Menu Key - Indicating and setting setpoint values Set the following values:

in Line 1: the working temperature Setp.: Line 2: the high temperature limit Overt.: Line 3: the low temperature limit Subtmp: Line 4: the pump pressure stage St.Pump:

Control type: internal / external control To swap, the unit has to be in the STOP MODE. Indicated in line 4 on the DIALOG-DISPLAY (LCD)

MENU key - for selecting the menu functions (Menu see page 40)

Cursor keys - Select menu items

4.6

4.7

4.8

4.9

....

P-key Selecting parameters

Escape key 1) Cancel entries

2) Return to a higher menu level Enter key 1) Store value / parameter

2) Next lower menu level Numeric keypad: numerals 0 to 9; minus / decimal point

A M P

Rear

Si1

Si3

16 A

P 16

16 M

Si4 Si2

13 + 14

Pump connectors Return Feed M16x1

17 + 18

Control connector 230 V / max. 0.1 A

4 Mains circuit breakers (resettable) 16 A F1 and F3  Compressor

F2 and F4 Heater, Pump

10 Mains power cable with plug

Overflow connector M16x1

Connector for expansion vessel M16x1

Cooling water connectors LH41 G3/4" external thread IN - inlet OUT - outlet

Castor (at the back)

Operating controls and functional elements

4.1. The Presto Plus principle with closed external system

Operating:

The operation of the temperature system and the indication is effected via the local control panel (2) and the removable operating device RD(4).

Filling :

First connect the external consumer. The menu option >Mode< is set on >Fill<. The unit is filled at the hinged filling funnel (5) via the internal reservoir (5a). The bath liquid spreads from here into the external reservoir (16a) and into the heat exchanger (20).

The filling pipe (25) represents narrows. Therefore the filling should be done slowly. The air from the heat exchanger (20) escapes via the venting valve. In a first step approximately 2,6 liters of bath liquid

is filled in until the level indication

e.g. double-sided glass vessel

indicates 3 or 4 batons (see –Filling volume- page 29). Then, by

pressing the key (23) is started. In intervals the tempering liquid is pumped via connection (14) into the external system (33) and led back into the heat exchanger (20) via connection (13). At the end of the filling process the menu option >Mode< has to be set on >Sys close<.

Working:

In case of a closed external system the filling pipe (25) remains open and allows a change in volume of the bath liquid caused by temperature during operation. In case of emergency it has to be possible that the expanding bath liquid can drain off at the overflow (15) into a suitable vessel. If necessary the external reservoir (16a) can be mounted at connection (16). The temperature system can be cooled with air (32) or water (31). Connect the cooling water to the lead in for cooling water (18). Lead the outflow for cooling water (17) into the locally provided drain respectively backflow.

The temperature system is started with the key the circulating pump (23) start according to the desired adjustments at the operating device RD (4). In the line to the pump exit (14) the pump pressure (29) and the actual temperature of the internal control sensor (28a) is permanently measured. If the temperature control has to be effected externally a Pt100 external sensor (28b) has to be connected and switched over to external control at the operating device RD(4).

Safety: In the internal reservoir (5a) there are the level sensor (26) as well as a safety sensor (27b). The safety sensor (27a) as high temperature protection is located directly at the heater (21). If the external circuit is interrupted (e.g. with a shut-off valve), an emergency circuit is maintained via an internal Bypass (30).

an automatic filling and venting mode with activation of the circulating pump

. The heating (21), the cooling aggregate (22) and

5. Preparations

5.1. Bath fluids

Recommended bath fluids for external, closed systems.

ATTENTION: The maximum permissible viscosity is 50 mm

Caution:

Carefully read the safety data sheet of the bath liquid 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.

Caution:

 Fire or other dangers when using bath fluids that are not recommended:

Please contact JULABO before using other than recommended bath liquids. JULABO assumes no liability for damage caused by the selection of an unsuitable bath fluid. Unsuitable bath fluids are fluids which, e.g.,  are highly viscous

(much higher than 50 mm2 / S at the respective working temperature)

 have a low viscosity and have creep characteristics

 have corrosive characteristics or  tend to crack.

No liability for use of other bath fluids!

 See website for list of recommended bath fluids.

Contact: see page 6

/ S

Caution:

The use of water in purified or unpurified form is not allowed. Examples: Tap water, distilled water, water-glycol mixture, CaCl2-brine

Important notice concerning the recommended bath liquids:

 Bath liquids with a range of application above the fire point ?  This temperature system is mainly operated in a closed external system (loop

circuit). The contact of the bath liquid with atmospheric oxygen only takes place in the internal reservoir, which is not located directly in the termperature circuit.

 A safety device supervises and controls the the temperature in the internal

reservoir.

 The temperature of the bath liquid is maintained constant at approx. +20°C  The safety device with an adjustable temperature value >RES< works

independently from the control circuit. When actuating this safety device (too much hot fluid streams into the internal reservoir) the temperature system is switched off all-polo and permanently.

 Adjust the safety temperature >RES< at at least 20 K below the fire point of

the bath liquid.

Preparations

Diagram 1: JULABO Thermal oils Change in volume in dependence on the temperature of bath liquid.

Example A: Filling quantity at ambient temperature 5 liters Intended working temperature range -40 °C bis +250 °C Change in volume caused by temperature 1,75 liters Here an external expansion vessel is required (Order no.: 8 970 830)

Example B: Filling quantity at ambient temperature 5 liters Intended working temperature range +20 °C bis +200 °C Change in volume caused by temperature 1,2 liters Here no external expansion vessel is required

(see table „Filling volume“ Page 29).

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