Lauda Viscotemp 15 G User manual

Operation manual
ECO GOLD
Heating and cooling thermostats with control head GOLD
Immersion thermostat
ECO GOLD
Heating thermostats
E 4 G, E 10 G, E 20 G, E 25 G, E 40 G, ET 6 G, ET 12 G, ET 15 G, ET 20 G
Cooling thermostats
RE 415 G, RE 415 GW, RE 420 G, RE 630 G, RE 1225 G, RE 2025 G, RE 1050 G
Viscothermostats
Viscotemp 15 G, Viscotemp 18 G, Viscotemp 24 G, Viscotemp 40 G
Calibration thermostat
RE J 1225 G
Version 09/2021 k Read the instructions before starting work!

2 / 134 ECO Gold 09/2021
Manufacturer
LAUDA DR. R. WOBSER GMBH & CO. KG
Laudaplatz 1
97922 Lauda-Königshofen
Germany
Phone: [phone]
Fax: [phone]
E-mail [e-mail]
Internet http://www.lauda.de
Translation of the original operation manual
YACE0088
replaces version 10/2019 j, 05/2019 h, 11/2018 g, 05/2017 f, 04/2017 e, 11/2016 d1, 08/2016 a3, 08/2011 a2,
08/2011 a1
Valid from:
Software of Control System version 1.54
Software of Safety System version 1.43
Software of Chilling System version 1.37
Software Analog IO module version 3.21
Software Serial IO RS 232 module version 3.22
Software Digital IO module version 3.14
Software Solenoid valve version 3.06
Software EtherCAT module version 1.08
Software Ethernet module version 1.23

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Table of contents
1Safety...............................................................................................................................................................................................7
1.1 Safety information .................................................................................................................................................................7
1.2 General safety ........................................................................................................................................................................8
1.3 Special safety information.....................................................................................................................................................9
2General remarks...........................................................................................................................................................................11
2.1 Description of the device ...................................................................................................................................................11
2.2 Intended application............................................................................................................................................................11
2.3 Use other than that intended.............................................................................................................................................11
2.4 Responsibility of the operating body - safety information..............................................................................................11
2.5 Materials ..............................................................................................................................................................................12
3Device description .......................................................................................................................................................................13
3.1 Device types........................................................................................................................................................................13
3.2 Pump....................................................................................................................................................................................13
3.3 Programmer ........................................................................................................................................................................13
3.4 Interfaces.............................................................................................................................................................................13
3.5 Interface modules (Accessories) .......................................................................................................................................14
3.6 Chiller...................................................................................................................................................................................14
4Operating and functional controls.............................................................................................................................................15
5Transport and unpacking.............................................................................................................................................................22
6Before putting the device into operation ..................................................................................................................................24
6.1 Assembly and siting.............................................................................................................................................................24
6.2 Connection of external consumers ...................................................................................................................................30
6.3 Filling and emptying............................................................................................................................................................33
6.4 Heat transfer liquids, cooling water and hoses .................................................................................................................35
6.5 Cooling of heating thermostats .........................................................................................................................................39
6.6 First switch-on ....................................................................................................................................................................39
6.7 Installation of modules........................................................................................................................................................40
7Operation .....................................................................................................................................................................................42
7.1 Switching on ........................................................................................................................................................................44
7.2 Menu structure ...................................................................................................................................................................45
7.3 Display representation........................................................................................................................................................47
7.3.1 Basic window...............................................................................................................................................................47
7.3.2 Menu window..............................................................................................................................................................47
7.3.3 Entry window ..............................................................................................................................................................48
7.3.4 Graphics window ........................................................................................................................................................49

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7.4 Basic setup...........................................................................................................................................................................49
7.4.1 Setting the overtemperature switch-off point Tmax.................................................................................................49
7.4.2 Setting the temperature set-point value..................................................................................................................50
7.4.3 Setting the pump level ...............................................................................................................................................50
7.4.4 Activating the "Standby" operating state .................................................................................................................51
7.4.5 Defining temperature limits.......................................................................................................................................51
7.4.6 Setting the date and time ..........................................................................................................................................52
7.4.7 Selecting the menu language ....................................................................................................................................52
8Maintenance.................................................................................................................................................................................53
8.1 Alarms, warnings and errors ...............................................................................................................................................53
8.1.1 Overtemperature protection: Alarm and checking.................................................................................................53
8.1.2 Low level: Alarm and checking ..................................................................................................................................54
8.2 Device status .......................................................................................................................................................................55
8.2.1 Store for errors, alarms and warnings .......................................................................................................................55
8.2.2 Device data .................................................................................................................................................................55
8.2.3 Software version .........................................................................................................................................................56
8.2.4 Displaying and changing the device type..................................................................................................................56
8.2.5 Displaying serial numbers ..........................................................................................................................................56
8.3 Servicing...............................................................................................................................................................................57
8.3.1 Cleaning ......................................................................................................................................................................57
8.3.2 Servicing intervals.......................................................................................................................................................58
8.3.3 Inspecting the heat transfer liquid.............................................................................................................................58
8.3.4 Cleaning the condenser .............................................................................................................................................59
8.3.4.1 Air-cooled condenser .......................................................................................................................................59
8.3.4.2 Water-cooled condenser..................................................................................................................................59
8.4 Fault finding.........................................................................................................................................................................61
8.5 Disposal information ...........................................................................................................................................................62
8.5.1 Disposal of the refrigerant.........................................................................................................................................62
8.5.2 Disposal of the packaging ..........................................................................................................................................62
8.6 Taking the device out of service .........................................................................................................................................63
8.7 Ordering replacement parts / LAUDA Service................................................................................................................64
9Accessories ...................................................................................................................................................................................65
10 Technical data and graphs ...........................................................................................................................................................67
11 Declaration of Conformity .........................................................................................................................................................77
12 Index..............................................................................................................................................................................................79
Appendix with settings.........................................................................................................................................................................85
13 Other settings..............................................................................................................................................................................86
13.1 Resetting to factory settings..............................................................................................................................................86

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13.2 Setting the volume of the acoustic signals........................................................................................................................87
13.3 Setting the chiller................................................................................................................................................................87
13.4 Setting the display brightness ............................................................................................................................................88
13.5 Defining the starting mode (Autostart)............................................................................................................................88
13.6 Limiting the mains current consumption ..........................................................................................................................89
13.7 Entering the offset of the displayed temperature (calibration) ......................................................................................89
13.8 Restoring the factory setting of the internal temperature sensor..................................................................................90
13.9 Key lock................................................................................................................................................................................91
14 List of "Alarm and warning codes"..............................................................................................................................................92
15 Graphical display of temperature measurements.....................................................................................................................95
16 External control ...........................................................................................................................................................................98
16.1 Activating external control (external Pt100) ..................................................................................................................98
16.2 Show the selected control variable (external temperature) on the display....................................................................98
16.3 Setpoint offset operating mode (Diff.set/actual) ............................................................................................................99
17 Programmer .............................................................................................................................................................................. 100
17.1 Programming example..................................................................................................................................................... 100
17.2 Creating and editing a program ...................................................................................................................................... 102
17.3 Starting the program........................................................................................................................................................ 104
17.4 Interrupting, continuing or terminating the program.................................................................................................... 104
17.5 Defining the number of program loops (Loops)............................................................................................................ 105
18 Control parameters .................................................................................................................................................................. 106
18.1 Internal control variable (internal temperature sensor)................................................................................................ 106
18.2 External control variable.................................................................................................................................................. 108
18.2.1 Setting the correcting quantity limit...................................................................................................................... 109
18.2.2 Procedure for setting the control parameters for external control .................................................................... 110
19 Interface modules..................................................................................................................................................................... 111
19.1 Menu structure of the modules ...................................................................................................................................... 111
19.2 Analog module.................................................................................................................................................................. 112
19.3 RS 232/485 interface module...................................................................................................................................... 113
19.3.1 Connecting lead and interface test RS 232 ........................................................................................................ 113
19.3.2 RS 232 protocol..................................................................................................................................................... 114
19.3.3 RS 485 connecting lead ........................................................................................................................................ 114
19.3.4 RS 485 protocol..................................................................................................................................................... 115
19.4 LiBus module.................................................................................................................................................................... 115
19.5 Pt100/LiBus module....................................................................................................................................................... 116
19.6 USB interface................................................................................................................................................................... 117
19.6.1 Description .............................................................................................................................................................. 117
19.6.2 Installation of the USB driver................................................................................................................................. 117

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19.6.3 Connecting the thermostat to the PC..................................................................................................................118
19.6.4 Where is the ECO Virtual COM Port?................................................................................................................120
19.7 Commands and error messages applicable to the RS 232/485 interface module and to the Ethernet interface 122
19.7.1 Interface write commands (data issued to the thermostat) ................................................................................ 122
19.7.2 Interface read commands....................................................................................................................................... 123
19.7.3 Interface error messages ........................................................................................................................................ 126
19.7.4 Driver software for LABVIEW® ........................................................................................................................... 126
19.8 Contact module ...............................................................................................................................................................127
19.8.1 Contact module LRZ 914 with 1 input and 1 output.........................................................................................127
19.8.2 Contact module LRZ 915 with 3 inputs and 3 outputs......................................................................................128

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1Safety
1.1 Safety information
Danger!
Type and source
Consequences of non-compliance
Action 1
Action ...
"DANGER" indicates an immediate dangerous situation which –if the safety requirements
are ignored –may result in fatal or severe, irreversible injuries.
Warning!
Type and source
Consequences of non-compliance
Action 1
Action ...
"WARNING" indicates a possible dangerous situation which –if the safety requirements are
ignored –may result in fatal or severe, irreversible injuries.
Caution!
Type and source
Consequences of non-compliance
Action 1
Action ...
"CAUTION" indicates a possible dangerous situation which –if the safety requirements are
ignored –may result in slight, reversible injuries.
Notice
Type and source
Consequences of non-compliance
Action 1
Action ...
"NOTICE" warns of possible property or environmental damage.

Reference
Refers to further information in other sections.

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1.2 General safety
Read through the operating instructions carefully. They contain important information for working with this device. If
you have any queries, please contact our Service Department (8.7).
Follow all the directions in these operating instructions. Only in this way is the correct procedure ensured when working
with the device.
Make sure that the device is only operated by instructed specialist personnel.
Never operate the device without heat transfer liquid.
Never operate the device,
if it is damaged,
if it is leaking,
if the mains cable is damaged.
Switch off the device and withdraw the mains plug:
when carrying out service or repair work,
when moving the device,
when installing or removing modules or accessories,
in case of danger.
Do not make technical modifications to the device. Infringements in this respect invalidate the warranty.
Have service and repair work carried out only by specialists.
Follow the safety information in the following sections and read it through carefully.
The devices are not designed for use in medical applications in accordance with DIN EN 60601-1 and IEC 601-1!
Classification in accordance with EMC requirements
Device
Immunity requirements
Emissions Class
Customer power supply
Heating thermostat
ECO Gold
Table 1* in accordance
with
DIN EN 61326-1
Emissions Class B
in accordance with CISPR 11
Worldwide
No limitation
Device
Immunity requirements
Emissions Class
Customer power supply
Cooling thermostat
ECO Gold
Table 1* in accordance
with
DIN EN 61326-1
Emissions Class B
in accordance with CISPR 11
Worldwide
No limitation
* Devices for use in basic electromagnetic environment

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Instructions for Class A digital device, USA:
“Note: This equipment has been tested and found to comply with the limits for Class A digital device, pursuant to Part
15 of the FCC (Federal Communication Commission) Rules. These limits are designed to provide reasonable protection
against harmful interference when the equipment is operated in a commercial environment. This equipment generates,
uses, and can radiate radio frequency energy and, if not installed and used in accordance with the instruction manual,
may cause harmful interference to radio communications. Operation of this equipment in a residential area is likely to
cause harmful interference in which case the user will be required to correct the interference at his own expense”.
Instructions for Class A digital device, Canada:
“This Class A digital apparatus complies with Canadian ICES-003” (ICES = Interference Causing Equipment Stand-
ards).
1.3 Special safety information
The use of the thermostat is only admissible under the following conditions:
The siting surface must be impervious, flat, non-slip and non-combustible. Do not position the thermostat at the
edge of the bench or table.
Keep to the specified wall spacing (6.1).
Protect the thermostat from dripping or condensing water.
Do not store any liquids or combustible objects above the device.
Do not work with flammable liquids in the direct vicinity of the device.
Only connect the device to an earthed mains socket which is freely accessible.
At higher operating temperatures parts of the bath cover can take on temperatures of over 70 °C. There is a dan-
ger of burns.
Only use suitable hoses. (6.4)
Ensure that the hoses are not kinked during operation.
Check the hoses at certain inspection intervals (8.3.2) for material fatigue.
Hoses with hot heat transfer liquid and other hot parts must not come into contact with the mains cable.
When using the thermostat as a circulation thermostat, hot liquid can escape due to hose fracture and become a
danger to personnel and materials.
Irritant vapors may be generated depending on the heat transfer liquid used and the operating mode.
- Ensure sufficient extraction of the vapors.
- Use the bath cover.
Carefully mount the immersion thermostat on the bath vessel.
Only use bath vessels which are suitable for the intended operating temperatures.
When filling, set the overtemperature switch-off point according to the heat transfer liquid used.
When changing the heat transfer liquid from water to other liquids for temperatures above 100 °C, carefully re-
move all residues of water including from the hoses and consumers, otherwise there is a risk of scalding due to delay
in boiling.
To do this also remove the blank plugs on the pump inputs and outputs and blow them out with compressed air.

10 / 134 ECO Gold 09/2021
Use the cooling coil with cooling water only at operating temperatures below 100 °C.
At higher temperatures there is danger of hot vapors forming.
Have repairs carried out only by specialists.
Keep to all the service and maintenance intervals (8.3.2).
Take note of all safety instructions on the device and in these operating instructions. .
Applicable to water-cooled devices:
Secure the return hose of the water cooling in the discharge area in order to prevent the hose sliding off uncontrol-
lably, also during pressure surges.
Secure the return hose of the water cooling in the discharge area so that it is not possible of hot cooling water to
splash out.
Avoid kinking or crushing the return hose of the water cooling. Excessive pressure can cause the cooling water
hoses to tear and hot water to escape.
To avoid damage due to a leak in the cooling water system we recommend the use of a water leakage sensor with
water cut-off.

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2General remarks
2.1 Description of the device
This device is a laboratory thermostat. It is obtainable as:
Immersion thermostat (optionally with cooling coil), which is used for heating (and optionally for cooling) liq-
uids in existing vessels.
Heating bath and circulation thermostat, designated in the following as a heating thermostat, which is used for
heating liquids.
Heating bath and circulation thermostat (a cooling/heating thermostat), also designated in the following as a
"cooling thermostat", which is used for cooling and heating liquids.
2.2 Intended application
This LAUDA thermostat is manufactured exclusively for cooling/heating liquid baths. In the case of the immersion
thermostat the baths used must have methods of secure mounting.
The device may only be put into operation in suitable interior rooms.
Operation up to a height of 2000 m above sea level is admissible.
The devices must only be operated as intended and under the conditions stated in these operating instructions. Any
other operating mode is not regarded as used as intended.
The thermostat may only be operated with the following heat transfer liquids:
Aqua 90
Kryo 20
Kryo 30
Kryo 51
Therm 160
Therm 180
Therm 250
Decalcified water
Take into account the properties of the heat transfer liquids. (6.4)
2.3 Use other than that intended
The device must not be used:
in areas subject to explosion hazards
when sited outdoors
with combustible or highly flammable gases
for heating or cooling foodstuffs.
2.4 Responsibility of the operating body -safety information
The operating body is responsible for the qualifications of the operating personnel.
The thermostat must only be configured, installed, maintained and repaired by specialist personnel.
Persons operating the device must be instructed in their work by a specialist.
Make sure that specialist personnel and operators have read and understood the operating instructions.
The device must be used as intended (2.2).

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2.5 Materials
All parts that are exposed to heat transfer liquid are manufactured from high-quality materials adapted to withstand
the operating temperature. High-quality stainless steel, brass, bronze, high-quality heat-resistant plastics and elas-
tomers are used.

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3Device description
3.1 Device types
Heating thermostats
The type designation of the LAUDA heating thermostats is composed of the prefix E for ECO, the approximate bath
volume in liters and a G for the GOLD device variant.
Example: E 10 G is a heating thermostat with a maximum bath volume of 10 liters in the GOLD device variant.
With the heating thermostats with a transparent bath there is the prefix of ET for the ECO transparent bath, followed
by the bath volume in liters and a G for the device variant GOLD.
Example: E 6 G is a heating thermostat with a transparent bath with a maximum bath volume of 6 liters in the GOLD
device variant.
Cooling thermostats
Example: RE 420 G is a heating thermostat with a maximum bath volume of 4 liters and a minimum temperature of
-20 °C. Where applicable the type designations are supplemented by a W for "water-cooled".
Viscothermostats
The name of LAUDA viscothermostats is composed of "Viscotemp" at the start followed by the approximate bath vol-
ume in liters and a G for the model, GOLD.
3.2 Pump
Using the operating menu, one of six flow-rate levels can be selected for the pump. For thermostats with a small bath a
power level of 1 to 3 is practicable.
When operated as a circulation thermostat with an external consumer, a higher power level is practicable to keep the
temperature difference between the bath and external consumer small even a higher temperatures.
The pump connection of the outflow can be closed without any detrimental effects on the pump.
Pump characteristics (10)
3.3 Programmer
The devices are equipped with a programming function (17).
3.4 Interfaces
In the basic version the devices are equipped with a USB interface. This enables, for example, the connection of a PC
and operation with the thermostat control software "Wintherm Plus". In addition software updates are possible via the
USB interface. The connecting lead is not included in the items supplied with the thermostat. When connecting up,
make sure the correct plug is used.
The type designation of LAUDA cooling thermostats is composed of the prefix R (to identify the cooling thermostat:
Refrigerated), an E for ECO, the bath volume in liters, the minimum attainable temperature (without arithmetical sign)
and a G for the device variant GOLD.
An additional output is used for internal bath circulation. By switching the selector at the front on the control head,
the flow can be manually selected or divided between the two outputs.
All devices are equipped with a pressure pump. The pump has an output with a pivotable outflow elbow.

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3.5 Interface modules (Accessories)
The devices can be supplemented with further interface modules, which are connected to the rear of the control head in
two module slots (6.7) and are inserted.
The following modules are currently available:
1. Analogue Module (LAUDA catalogue no. LRZ 912) with two inputs and two outputs on a six-pole DIN
socket. The inputs and outputs can be set independently of one another as a 0 - 20 mA, 4 –20 mA or
0 –10 V interface, 20 V is brought out on the socket as a power supply for an external sensor with evalua-
tion electronics.
2. RS 232/485 Interface Module (LAUDA catalogue no. LRZ 913) with nine-pole SUB-D socket. Electri-
cally isolated using optocouplers. Using the LAUDA instruction set, extensively compatible to the ECO,
Proline, Proline Kryomat, Integral XT and Integral T series. The RS 232 interface can be connected using a
1:1 contacted cable (LAUDA catalogue no. EKS 037) directly to the PC.
3. Contact Module (LAUDA catalogue no. LRZ 914) with connector to NAMUR NE28. Range of functions
as for LRZ 915, but only one output and one input on each of two DIN sockets. Coupling socket, 3-pole
(LAUDA catalogue no. EQD 047) and coupling plug 3-pole (LAUDA catalogue no. EQS 048).
4. Contact Module (LAUDA catalogue no. LRZ 915) on a 15-pole SUB-D socket. With three relay contact
outputs (changeover, max. 30V/0.2A) and three binary inputs for control via external voltage-free con-
tacts. Plug 15-pole, (LAUDA catalogue no. EQM 030) and Plug Housing (LAUDA catalogue no. EQG
017).
5. Profibus Module (LAUDA catalogue no. LRZ 917).
You will find further information in the Operating Instructions Q4DA-E_13-014 for the Profibus Mod-
ule.
6. Pt100/LiBus Module (LAUDA catalogue no. LRZ 918)
External Pt100: For the connection of an external temperature sensor.
LiBus: For the connection of the Command remote control unit from the Proline equipment
line and other accessories, such as a solenoid valve for cooling water control or a re-
verse-flow protection device.
3.6 Chiller
The chiller mainly consists of a fully hermetically sealed compressor. The dissipation of the condensation and motor heat
takes place via a fan-ventilated lamellar condenser for water-cooled devices via heat exchanger. Here, atmospheric air is
drawn in at the front of the device, heated up and discharged at the back and sides. To ensure proper air circulation the
ventilation openings must not be covered up.
The compressor is equipped with a thermal release which responds to the compressor temperature and current con-
sumption. The chiller is normally switched in automatically, but can also be switched in manually via the operating menu
(13.3).
The chiller is switched off when a malfunction occurs which affects safety.
The Cooling Thermostat RE 1050 G is equipped with the SmartCool technology which makes optimum use of the
compressor and only chills when cooling output is demanded by the controller. To achieve this, several sensors in the
cooling circuit monitor the operating status.
Cooling times for the various cooling thermostats can be taken from the cooling curves (10).

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4Operating and functional controls
On the following pages the ECO GOLD control head, the control panel and the heating/cooling thermostat device types are
presented.
Control Head ECO GOLD (can be used as immersion thermostat with screw clamp)
1 Light sensor for automatic control of display brightness
2 Color TFT display
3 Control panel (refer to following page)
4 Mains switch
5 Selector switch for dividing up the external and internal pump flow
6 Pump output for internal bath circulation
7 Pump output for bath circulation or connection to the pump connection set
8 Pt100 temperature sensor
9 Heater
1
2
3
4
5
6
7
8
9

16 / 134 ECO Gold 09/2021
Control panel and display ECO GOLD
Display
Control panel
1 Expanded status display
5 Soft keys, left and right
2 Status display
6 Enter key
3 Display of the internal or external tempera-
ture value (Tint or Text)
7 Cursor keys (cursor keys) for Up, Down, Left
and Right.
4 Soft-key bar
8 Taste Tmax: Display and adjustment of the
over-temperature switch-off point
1
2
3
4
5
5
6
7
8

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Rear view of Control Head ECO GOLD
1 USB interface
2 Upper module receptacle approx. 51 mm x 27 mm for analogue, RS 232/485 module, Profibus module
and contact modules.
3 Lower module receptacle approx. 51 mm x17 mm for Pt100/LiBus module
4 Connection 75S for control cable of cooling underpart for RE 1050 G
5 Rating label
6 Connection socket 51H for power supply between the control head and cooling underpart
7 Mains connecting lead
1
2
3
4
6
5
7

18 / 134 ECO Gold 09/2021
Heating Thermostats ECO GOLD
1 Cooling coil connections
2 Pump connection: outflow and return (as standard only with E 4 G and ET 15 G)
3 Four feet
1 Mains connecting lead
2 Rating label
3 Bath draining tap
4 Bath drain point
1
2
3
1
2
3
4

Viscothermostat Viscotemp 24 G
1 Pump connector set with thread connection M16 x 1 concealed)
2 Recessed grips right and left)
3 Viscotemp 24 cover plate LCZ 0734)
4 Bath with glass windows
5 Drain tap and draining nozzle right side)
6 Type plate right side)
7 Four feet concealed)
2
4
2
1
6
5
3
7
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20 / 134 ECO Gold 09/2021
Cooling Thermostats ECO GOLD
1 Pump connection: Outflow and return with M16 x 1 thread (stainless steel)
2 Bath cover
3 Front grip recess
4 Ventilation grill (both sides)
5 Front panel (removable without tools)
6 Four feet
1
2
3
4
5
6