Huber Unichiller 400T User manual

Unichiller®

OPERATION MANUAL
Unichiller®

OPERATION MANUAL
V2.3.0en/07.06.19//17.12 Unichiller®
5
Unichiller®
Pilot ONE®
This operation manual is a translation of the original operation manual.
Also for models with heater and with/without an emergency stop switch (optional).
VALID FOR:
CLASSIC
Unichiller® 0xx
Unichiller® 1x0
TOWER
Unichiller® 0xxT
Unichiller® 1x0T
Unichiller® 2x0T
Unichiller® 3x0T
Unichiller® 4x0T
Unichiller® 500T
Unichiller® 600T
Unichiller® 700T
Abbreviations used in model names:
Without = with air cooling, P = stronger pump, w = with water cooling, -H = with heater,
-WO = winter option

OPERATION MANUAL
Unichiller® V2.3.0en/07.06.19//17.12
6
„Pilot ONE“
Layout of the “Home”
screen

OPERATION MANUAL
V2.3.0en/07.06.19//17.12 Unichiller®
7
Table of contents
V2.3.0en/07.06.19//17.12
1Introduction 12
1.1 Details on the declaration of conformity....................................................... 12
1.2 Safety .......................................................................................................... 12
1.2.1 Symbols used for Safety Instructions..............................................................12
1.2.2 Representation of safety identifiers ...............................................................13
1.2.3 Proper operation.............................................................................................13
1.2.4 Reasonably foreseeable misuse......................................................................14
1.3 Responsible bodies and operators – Obligations and requirements............... 14
1.3.1 Obligations of the responsible body ...............................................................14
1.3.1.1 Proper disposal of resources and consumables .........................................15
1.3.1.2 Temperature control unit with natural refrigerants (NR) ..........................15
1.3.1.3 Temperature control units with fluorinated greenhouse gases/refrigerants17
1.3.2 Requirements for operators ...........................................................................17
1.3.3 Obligations of the operators...........................................................................18
1.4 General information..................................................................................... 18
1.4.1 Description of workstation .............................................................................18
1.4.2 Safety devices to DIN 12876 ...........................................................................18
1.4.2.1 Temperature control units (with heater) with electronic low level sensor18
1.4.3 Further protective devices..............................................................................19
1.4.3.1 Power interruption.....................................................................................19
1.4.3.2 Alarm functions ..........................................................................................19
1.4.3.3 Warning messages......................................................................................19
1.4.3.4 Emergency stop switch (optional)..............................................................19
1.5 Exemplary illustrations of the cooling variants.............................................. 20
1.5.1 Consequence of inadequate energy dissipation.............................................20
2Commissioning 22
2.1In-plant transport......................................................................................... 22
2.1.1 Lifting and transporting the temperature control unit...................................22
2.1.1.1 Temperature control unit with lifting eyes ................................................22
2.1.1.2 Temperature control unit without lifting eyes...........................................23
2.1.2 Positioning the temperature control unit.......................................................23
2.1.2.1 Temperature control unit with casters ......................................................23
2.1.2.2 Temperature control unit without casters .................................................23
2.2 Transportation lock ...................................................................................... 23
2.2.1 Transportation lock Type A.............................................................................24
2.2.1.1 Releasing the transportation lock (operating position)..............................24
2.2.1.2 Tightening the transportation lock (transport position) ............................24
2.2.2 Transportation lock Type B .............................................................................24
2.2.2.1 Releasing the transportation lock (operating position)..............................25
2.2.2.2 Tightening the transportation lock (transport position) ............................25
2.3 Unpacking.................................................................................................... 25
2.4 Ambient conditions...................................................................................... 25
2.4.1 EMC-specific notes..........................................................................................26
2.5 Installation conditions.................................................................................. 27
2.6 Recommended temperature control and cooling water hoses ...................... 27
2.7 Wrench sizes and torques............................................................................. 28

OPERATION MANUAL
Unichiller® V2.3.0en/07.06.19//17.12
8
2.8 Temperature control units with water cooling.............................................. 28
2.9 Temperature control unit for outdoor installation incl. winter operation ...... 29
2.10 Preparations for operation ........................................................................... 30
2.10.1 Unscrewing/activating the leveling feet (if any) .............................................30
2.10.2 Opening/closing valves ...................................................................................31
2.10.3 Emergency stop switch (optional): Check switching status ............................31
2.11 Connecting externally closed application...................................................... 31
2.11.1 Connecting an externally closed application ..................................................31
2.12 Connecting to the power supply ................................................................... 32
2.12.1 Connection using socket with protective earth (PE).......................................32
2.12.2 Connection via hard wiring .............................................................................32
2.12.3 Connecting the functional earth .....................................................................33
3Function description 34
3.1 Function description of the temperature control unit ................................... 34
3.1.1 General functions............................................................................................34
3.1.2 Other functions...............................................................................................34
3.2 Information on the thermal fluids ................................................................ 35
3.3 To be noted when planning the test ............................................................. 36
3.4 “Pilot ONE®” controller ................................................................................ 37
3.4.1 Functional overview of “Pilot ONE®” ..............................................................37
3.5 Clock/event function.................................................................................... 39
3.5.1 Rechargeable accumulator .............................................................................39
3.5.2 Programmable event function ........................................................................39
3.5.2.1 Event function “Alarm clock event” ...........................................................39
3.5.2.2 Event function “Program event” ................................................................39
3.6 Operation via the touch screen..................................................................... 40
3.7 Display instruments ..................................................................................... 40
3.7.1 The touchscreen [88] ......................................................................................40
3.8 Control instruments ..................................................................................... 40
3.8.1 The touchbuttons............................................................................................41
3.8.2 The categories.................................................................................................41
3.8.3 The sub-categories..........................................................................................41
3.8.4 The dialogs ......................................................................................................41
3.9 Function examples ....................................................................................... 41
3.9.1 Display of software version.............................................................................41
3.9.2 Start & Stop.....................................................................................................42
3.9.3 Copying the settings to a data carrier.............................................................42
3.9.3.1 Saving to a USB flash drive .........................................................................42
3.9.3.2 Loading from a USB flash drive...................................................................43
3.9.4 Restore factory settings ..................................................................................43
3.9.4.1 Restore to factory settings without overtemperature protection .............44
3.9.4.2 Restore to factory settings including overtemperature protection ...........44
4Setup mode 46
4.1 Setup mode ................................................................................................. 46
4.1.1 Emergency stop switch (optional): Activate / Deactivate...............................46
4.1.1.1 Emergency stop switch (optional): Activate...............................................46
4.1.1.2 Emergency stop switch (optional): Deactivate...........................................46
4.1.2 Turning on the temperature control unit .......................................................46
4.1.3 Turning off the temperature control unit .......................................................47
4.1.4 Setting the overtemperature protection ........................................................48
4.1.4.1 General information on the overtemperature protection .........................48

OPERATION MANUAL
V2.3.0en/07.06.19//17.12 Unichiller®
9
4.1.4.2 Setting “OT limit: heating” .........................................................................48
4.1.4.3 Setting “Process Safety” .............................................................................49
4.1.4.4 Monitoring via “Display OT values”............................................................49
4.1.5 Testing overtemperature protection for functionality ...................................49
4.1.6 Adjusting the Delta T limiter ...........................................................................50
4.1.6.1 Changing the Delta T limiter.......................................................................50
4.2 The temperature control circuit.................................................................... 50
4.2.1 Select temperature control: Internal or process ............................................51
4.2.2 Temperature control to internal temperature ...............................................51
4.2.3 Temperature control to process temperature................................................51
4.2.4 Delta T limiter .................................................................................................52
4.2.5 Monitoring the Pt100 temperature sensors...................................................52
4.2.6 Optimum control parameters for optimum temperature control..................52
4.2.7 Sub-category: “Select auto/expert mode”......................................................52
4.2.8 Sub-category: “Configuration auto” ...............................................................53
4.2.8.1 Sub-category: “Find parameters”...............................................................53
4.2.8.2 Sub-category: “Control Dynamics”.............................................................55
4.2.8.3 Sub-category: “Fluid Properties”................................................................56
4.2.8.4 Sub-category: “Display parameters” ..........................................................57
4.2.9 Sub-category: “Configuration manual”...........................................................57
4.2.9.1 Sub-category: “Change parameters”..........................................................57
4.2.9.2 Sub-category: “Display parameters” ..........................................................58
4.2.9.3 Sub-category: “Control structure”..............................................................58
4.2.10 Sub-category: “Reset parameters” .................................................................59
4.2.11 Sub-category: “Display parameters”...............................................................59
4.2.12 Freeze protection for temperature control unit (optional) ............................59
4.2.13 Setting the setpoint thresholds ......................................................................60
4.2.14 Setting the setpoint ........................................................................................60
4.3 Filling, venting and draining ......................................................................... 61
4.3.1 Externally closed application ..........................................................................61
4.3.1.1 Filling and venting externally closed application........................................61
4.3.1.2 Draining externally closed applications......................................................63
5Normal operation 64
5.1 Automatic operation .................................................................................... 64
5.1.1 Temperature control.......................................................................................64
5.1.1.1 Starting the temperature control process..................................................64
5.1.1.2 Ending the temperature control process ...................................................64
5.1.2 Temperature control via a created temperature control program ................65
5.1.2.1 Starting the temperature control program ................................................65
5.1.2.2 Ending/cancelling the temperature control program ................................65
6Interfaces and software update 66
6.1 Interfaces at the “Pilot ONE®” controller ...................................................... 66
6.1.1 10/100 Mbps Ethernet for RJ45 network sockets ..........................................66
6.1.2 USB-2.0 interface ............................................................................................66
6.1.2.1 USB-2.0 interface, host...............................................................................67
6.1.2.2 USB-2.0 interface, device ...........................................................................67
6.2 Interfaces at the top side of the Unichiller. ................................................... 67
6.2.1 Female RS232 Serial (with adapter cable) ......................................................67
6.2.2 Connection jack for Pt100 process controller sensor .....................................67
6.2.3 Service interface .............................................................................................68
6.3 Interfaces at the Com.G@te® (optional) ....................................................... 68

OPERATION MANUAL
Unichiller® V2.3.0en/07.06.19//17.12
10
6.3.1 Jack LEVEL (Com.G@te® external only) ..........................................................69
6.3.2 Connector POKO (floating contact) alarm ......................................................69
6.3.3 Jack AIF Reg-E-Prog.........................................................................................70
6.3.4 Jack ECS (External Control Signal) standby .....................................................71
6.3.5 Jack RS232/RS485 serial..................................................................................72
6.4 Firmware update.......................................................................................... 72
7Service/maintenance 73
7.1 Messages from the temperature control unit ............................................... 73
7.2 Replacing the “Pilot ONE®”........................................................................... 73
7.3 Maintenance................................................................................................ 73
7.3.1 Function check and visual inspection .............................................................74
7.3.2 Replacing temperature control or coolant hoses ...........................................75
7.3.2.1 Replacing temperature control hoses ........................................................75
7.3.2.2 Replacing coolant hoses .............................................................................75
7.3.3 Clean liquefier fins (air-cooled temperature control unit) .............................75
7.3.4 Clean hat-type strainer (dirt trap) (water-cooled temperature control unit).76
7.3.5 Emergency stop switch (optional): Function test ...........................................76
7.4 Thermal fluid inspection, replacement and circuit cleaning........................... 77
7.4.1 Thermal fluid inspection .................................................................................77
7.4.2 Thermal fluid replacement .............................................................................77
7.4.2.1 Externally closed application......................................................................78
7.4.3 Rinsing the thermal fluid circuit......................................................................78
7.5 Cleaning the surfaces ................................................................................... 79
7.6 Inspect the mechanical seal.......................................................................... 80
7.7 Plug contacts................................................................................................ 80
7.8 Decontamination/repairs ............................................................................. 80
8Shutting down 81
8.1 Safety instructions and basic principles ........................................................ 81
8.2 Switch-off .................................................................................................... 81
8.3 Draining the cooling water ........................................................................... 82
8.3.1 Draining process .............................................................................................82
8.4 Transportation lock ...................................................................................... 82
8.5 Packing ........................................................................................................ 82
8.6 Shipping....................................................................................................... 82
8.7 Disposal ....................................................................................................... 83
8.8 Contact data ................................................................................................ 84
8.8.1 Telephone number: Customer Support ..........................................................84
8.8.2 Telephone number: Sales ...............................................................................84
8.8.3 Email address: Customer Support...................................................................84
8.9 Certificate of Compliance ............................................................................. 84
9Annex 85

OPERATION MANUAL
V2.3.0en/07.06.19//17.12 Unichiller®
11
Foreword
Dear Customer,
Thank you for choosing a temperature control unit from Peter Huber Kältemaschinenbau AG. You
have made a good choice. Thank you for your trust.
Please read the operation manual carefully before putting the unit into operation. Strictly follow all
notes and safety instructions.
Follow the operation manual with regard to transport, start-up, operation, maintenance, repair,
storage and disposal of the temperature control unit.
We fully warrant the temperature control unit for the specified normal operation.
The models listed on page 5 are referred to in this operation manual as temperature control units
and Peter Huber Kältemaschinenbau AG as Huber company or Huber.
Liability for errors and misprints excluded.
The following trademarks and the Huber logo are registered trademarks of Peter Huber Kältemaschinenbau AG
in Germany and/or other countries worldwide: BFT®, CC®, CC-Pilot®, Com.G@te®, Compatible Control®,
CoolNet®, DC®, E-grade®, Grande Fleur®, KISS®, Minichiller®, Ministat®, MP®, MPC®, Peter Huber Minichiller®,
Petite Fleur®, Pilot ONE®, RotaCool®, Rotostat®, SpyControl®, SpyLight®, Tango®, TC®, UC®, Unical®, Unichiller®,
Unipump®, Unistat®, Unistat-Pilot®, Unistat Tango®, Variostat®, Web.G@te®. The following trademarks are
registered in Germany to DWS Synthesetechnik: DW-Therm®, DW-Therm HT®

Introduction
OPERATION MANUAL Chapter 1
Unichiller® V2.3.0en/07.06.19//17.12
12
1Introduction
1.1 Details on the declaration of conformity
The equipment complies with the basic health and safety requirements of the European Directives
listed below:
▪Machinery Directive
▪Low Voltage Directive
▪EMC Directive
1.2 Safety
1.2.1 Symbols used for Safety Instructions
Safety instructions are marked by the below combinations of pictograms and signal words. The
signal word describes the classification of the residual risk when disregarding the operation manual.
Denotes an immediate hazardous situation that will result in death or serious injuries.
Denotes a general hazardous situation that may result in death or serious injuries.
Denotes a hazardous situation that can result in injury.
Denotes a situation that can result in property material damage.
Denotes important notes and usable hints.
Notes in conjunction with Ex px cabinets.
The safety information in this operation manual is designed to protect the responsible body, the
operator and the equipment from damage. Safety instructions appear at the beginning of each
chapter and before instructions. First inform yourself about any residual risks due to misuse before
you start an operation.
Safety information and
procedure

Introduction
Chapter 1 OPERATION MANUAL
V2.3.0en/07.06.19//17.12 Unichiller®
13
1.2.2 Representation of safety identifiers
The following pictograms are used as safety identifiers. The table gives an overview of the safety
identifier used here.
Identifier Description
Mandatory sign
- Observe the instructions
Warning sign
- General warning sign
- observe the instructions
- Warning of electrical voltage
- Warning of hot surface
- Warning of flammable substances
1.2.3 Proper operation
Operating the temperature control unit in a potentially explosive area
DEATH THROUGH EXPLOSION
Do NOT install or start up the temperature control unit within an ATEX zone.
Improper use
SERIOUS INJURY AND PROPERTY DAMAGE
Store the operation manual where it is easy to access in close proximity to the temperature
control unit.
Only adequately qualified operators may work with the temperature control unit.
Operators must be trained before handling the temperature control unit.
Check that the operators have read and understood the operation manual.
Define precise responsibilities of the operators.
Personal protective equipment must be provided to the operators.
Be sure to follow the responsible body’s safety rules to protect life and limb and to limit dam-
ages!
Modifications to the temperature control unit by third-parties
DAMAGE TO THE TEMPERATURE CONTROL UNIT
Do not allow third parties to make technical modifications to the temperature control unit.
The EU declaration of conformity becomes invalid if any modifications are made to the tem-
perature control unit without the approval of Huber.
Only specialists trained by Huber may carry out modifications, repairs or maintenance work.
The following must be observed without fail:
Only use the temperature control unit in a fault-free condition!
Have the start-up and repairs carried out by specialists only!
Do not ignore, bypass, dismantle or disconnect any safety devices!
The temperature control unit must not be used for any purposes other than temperature control in
accordance with the operation manual.
Overview

Introduction
OPERATION MANUAL Chapter 1
Unichiller® V2.3.0en/07.06.19//17.12
14
The temperature control unit is manufactured for industrial use. The temperature control unit main-
tains the temperature of certain applications, including glass or metal reactors or other expedient
items in laboratories and industry. Flow-through coolers and calibration baths must be used only in
combination with Huber temperature control units. Thermal fluids suitable for the overall system
are used. The chilling and heating capacity is provisioned at the pump connections or - where pre-
sent - in the tempering bath. The technical specification of the temperature control unit is given in
the data sheet (from page 85 in section »Annex«). The temperature control unit must be installed,
configured and operated according to the handling instructions in this operating manual. Failure to
comply with the operation manual is deemed improper use. The temperature control unit conforms
to state-of-the-art technology and the recognized safety regulations. Safety devices are built into
your temperature control unit.
1.2.4 Reasonably foreseeable misuse
Without an Ex px cabinet, the temperature control unit is NOT protected against explosion and
must NOT be installed or put into operation within an ATEX Zone. When operating the tempera-
ture control unit in conjunction with an Ex px cabinet, the information in the annex (Section ATEX
operation) must be observed and followed. This annex is only provided for temperature control
units delivered with an Ex px cabinet. If this annex is missing, please immediately contact the Cus-
tomer Support of Huber (the telephone number is provided on page 84 in Section »Contact da-
ta«).
Use with medical devices (e.g. in Vitro diagnostic procedure) or for direct foodstuff temperature
control is NOT permissible.
The temperature control unit must NOT be used for any purposes other than temperature control in
accordance with the operation manual.
The manufacturer accepts NO liability for damage caused by technical modifications to the temper-
ature control unit, improper handling or use of the temperature control unit if the operation manu-
al is not observed.
1.3 Responsible bodies and operators – Obligations and
requirements
1.3.1 Obligations of the responsible body
The operation manual is to be stored where it is easy to access in close proximity to the temperature
control unit. Only adequately qualified operators (e.g. chemists, CTA, physicists etc.) are permitted
to work with the temperature control unit. Operators must be trained before handling the tempera-
ture control unit. Check that the operators have read and understood the operation manual. Define
precise responsibilities of the operators. Personal protective equipment must be provided to the
operators.
▪The responsible body must install a condensation water / thermal fluid drip tray below the tem-
perature control unit.
▪The responsible body must check whether national regulations require the mandatory installation
of a drain tray for the installation area of the temperature control unit/the entire system.
▪Our temperature control unit complies with all applicable safety standards.
▪Your system, which uses our temperature control unit, must be as safe.
▪The responsible body must design the system to ensure it is safe.
▪Huber is not responsible for the safety of your system. The responsible body is responsible for the
safety of the system.
▪Although the temperature control unit provided by Huber meets all the applicable safety stand-
ards, integration into a system may give rise to hazards that are characteristic of the other sys-
tem’s design and beyond the control of Huber.
▪It is the responsibility of the system integrator to ensure that the overall system, into which this
temperature control unit is integrated, is safe.
▪The >Mains isolator< [36] (if present) may be provided with a facility to lock the main isolator in
the off position to facilitate safe system installation and maintenance of the temperature control
unit. It is the responsibility of the responsible body to develop any lock-out/tag-out procedure in
accordance with local regulations (e.g. CFR 1910.147 for the US).

Introduction
Chapter 1 OPERATION MANUAL
V2.3.0en/07.06.19//17.12 Unichiller®
15
1.3.1.1 Proper disposal of resources and consumables
Do comply with all national disposal regulations applicable for you. Contact your local waste man-
agement company for any questions concerning disposal.
Material / Aids Disposal / Cleaning
Packing material Keep the packaging material for future use (e.g. transport).
Thermal fluid
Please refer to the safety data sheet of the thermal fluid used for information on its
proper disposal.
Use the original thermal fluid container when disposing it.
Filling accessories, e.g.
beaker
Clean the filling accessories for reuse. Make sure that the materials and cleaning
agents used are properly disposed of.
Aids such as towels,
cleaning cloths
Tools used to take up spilled thermal fluid must be disposed of in the same fashion
as the thermal fluid itself.
Tools used for cleaning must be disposed of depending on the cleaning agent used.
Cleaning agents such as
stainless steel cleaning
agents, sensitive-fabrics
detergents
Please refer to the safety data sheet of the cleaning agent used for information on its
proper disposal.
Use the original containers when disposing of large quantities of cleaning agents.
Consumables such as air
filter mats, temperature
control hoses
Please refer to the safety data sheet of the consumables used for information on
their proper disposal.
1.3.1.2 Temperature control unit with natural refrigerants (NR)
Over 8 g refrigerant per m³ room air
DEATH OR SERIOUS INJURY DUE TO EXPLOSION
Observe the rating plate (amount of natural refrigerant contained) and the room size (maximum room
concentration of natural refrigerant in case of leakage) when installing the temperature control unit.
Over 8 g refrigerant per m³ room air: A gas warning sensor must be fitted and functioning.
The gas warning sensor must be calibrated and maintained at regular intervals (between 6 and
12 months).
The temperature control unit is not approved for operation in an ATEX zone.
Huber products with natural refrigerants work with numerous proven, safe and highly-sustainable
technologies. The relevant standards and regulations for temperature control units with natural
refrigerants contain a number of stipulations, the importance of complying with which is set out
below. Also observe on page 13 the section »Proper operation«.
Huber temperature control units are constructed to be permanently sealed and are carefully
checked for leak tightness. Temperature control units with more than 150 g natural refrigerant are
equipped with an additional gas warning sensor. To find out whether your temperature control unit
is equipped with a gas warning sensor, refer to the data sheet from page 85 in section »Annex«.
The fill quantity of your temperature control unit is stated on the data sheet (from page 85 in sec-
tion »Annex«) or on the rating plate on the rear of the temperature control unit. Observe page 25,
section »Ambient conditions«and page 27, section »Installation conditions«.
Class of
application
field
Application field Example of the installation
location
Max.
quantity of
refrigerant
AND
Max. permissible
quantity above
ground level (GL)
A General Publicly accessible area in a
public building
8 g/m3
ambient air
1.5 kg
B Monitored Laboratories 2.5 kg
C Access only for
authorized persons Production equipment 10.0 kg
Temperature control units with more than 1 kg refrigerant must not be installed below ground level (GL).
Overview
Classifying the applica-
tion field

Introduction
OPERATION MANUAL Chapter 1
Unichiller® V2.3.0en/07.06.19//17.12
16
Temperature control units with up to 150 g natural refrigerant
▪The temperature control unit has been constructed to the requirements of EU and EFTA coun-
tries.
▪Use the table as guidance for classifying the application field. Respect the max. refrigerant quanti-
ty stated therein.
Temperature control units WITH pre-installed gas warning sensor and > 150 g natural refrigerant
▪The temperature control unit has been constructed to the requirements of EU and EFTA coun-
tries.
▪Use the table as guidance for classifying the application field. Respect the max. refrigerant quanti-
ty or the permissible highest quantity above ground level (GL) stated therein.
▪Ventilation with optional supply and exhaust air connection: Use the temperature control unit’s
supply and exhaust air connection to connect it to the building’s exhaust system (see wiring dia-
gram from page 85 in Section »Annex«). First, remove the cover to the air inlet connection; an air
filter mat is installed behind it. This air filter mat must be checked / replaced at regular intervals
so that the air flowing into the temperature control unit is not reduced (see page 74, Section
»Function check and visual inspection«). Connect the building’s exhaust system with the temper-
ature control unit’s exhaust air port. The cover of the supply air port mustnot be removed if the
exhaust system provided in a building is not used.
▪The mounting plate for mounting a gas warning sensor is located inside the temperature control
unit in the vicinity of the >Cable entry gas warning sensor< [100].
▪For the position of the >Cable entry gas warning sensor< [100], please refer to the wiring diagram
from page 85 in Section »Annex«.
▪Additional information on the pre-installed gas detection sensor:
-The built-in gas detection sensor enables a safety shutdown at 20% of the lower explosive
limit via a power disconnect relay that is to be installed by the responsible body. The
temperature control unit is thus switched off early and safely in case of fault.
-A 24 V DC external power supply must be available for the pre-installed gas warning sen-
sor. The alarm output of the gas warning sensor uses a 4 - 20 mA signal. Please refer to the
data sheet of the gas warning sensor for further technical information. A separate pro-
cessing unit is available as an accessory for the control of the power disconnect relay. The
processing unit provides a potential-free switching contact and simultaneously supplies
power to and analyzes the gas warning sensor. Both variants require the responsible body
to provide the necessary dimensioning and installation. Please refer to the data sheet of
the gas warning sensor for the technical installation information. The alarm of the gas de-
tection system can be connected to the responsible body’s alarm control unit. The respon-
sible body is responsible for this and other measures.
-The responsible body is responsible for the calibration of the gas detection sensor prior to
initial operation and the observance of calibration and maintenance intervals specified in
the operating manual. We recommend to set calibration and maintenance intervals be-
tween 6 and 12 months if no information is provided. For increased safety requirements,
shorter intervals can be specified. On request, we will recommend a specialist company to
carry out calibration and maintenance.
Temperature control units WITHOUT pre-installed gas warning sensor and > 150 g natural refrig-
erant
Over 8 g refrigerant per m³ room air
DEATH OR SERIOUS INJURY DUE TO EXPLOSION
Observe the rating plate (amount of natural refrigerant contained) and the room size (maxi-
mum room concentration of natural refrigerant in case of leakage) when installing the temper-
ature control unit.
Over 8 g refrigerant per m³ room air: A gas warning sensor must be fitted and functioning.
The gas warning sensor must be calibrated and maintained at regular intervals (between 6 and
12 months).
The temperature control unit is not approved for operation in an ATEX zone.
▪The temperature control unit has been constructed to the requirements of EU and EFTA coun-
tries.
▪Use the table as guidance for classifying the application field. Respect the max. refrigerant quanti-

Introduction
Chapter 1 OPERATION MANUAL
V2.3.0en/07.06.19//17.12 Unichiller®
17
ty or the permissible highest quantity above ground level (GL) stated therein.
▪Ventilation with optional supply and exhaust air connection: Use the temperature control unit’s
supply and exhaust air connection to connect it to the building’s exhaust system (see wiring dia-
gram from page 85 in Section »Annex«). First, remove the cover to the air inlet connection; an air
filter mat is installed behind it. This air filter mat must be checked / replaced at regular intervals
so that the air flowing into the temperature control unit is not reduced (see page 74, Section
»Function check and visual inspection«). Connect the building’s exhaust system with the temper-
ature control unit’s exhaust air port. The cover of the supply air port mustnot be removed if the
exhaust system provided in a building is not used.
▪NO gas warning sensor is installed in this temperature control unit! Make sure that the installa-
tion site of the temperature control unit is sufficiently protected in the event of malfunction.
These include:
-Installation of a gas warning sensor for the building (room monitoring).
-Permanent ventilation of the temperature control unit and/or the installation site.
-All-pole disconnection in the event of malfunction of the temperature control unit.
1.3.1.3 Temperature control units with fluorinated greenhouse gases/refrigerants
F gases regulation (EC) No. 517/2014 of April 16, 2014, on fluorinated greenhouse gases, and re-
pealing Regulation (EC) No. 842/2006.
These regulations deal with all systems that contain fluorinated refrigerants. The substances dealt
with in Directive (EC) No. 1005/2009 of the European Parliament and of the Council of 16 September
2009 that deplete the ozone layer are excluded (CFC/HCFC).
The directive regulates the reduction of the emission, utilization, recovery, and destruction of cer-
tain fluorinated greenhouse gases. It also regulates the identification and disposal of products and
devices that contain these gases. Since July 4, 2007, responsible bodies must check their stationary
refrigeration systems for leaks at regular intervals, and have any leaks eliminated immediately.
Directive (EC) No. 303/2008 contains stipulations on the training and certification of companies and
personnel that are permitted to execute the specified activities.
Obligations of the responsible bodies:
▪Directive (EC) No. 842/2006 already imposed a number of obligations upon responsible bodies
regarding certain fluorinated greenhouse gases. The new Ordinance on Fluorinated Greenhouse
Gases upholds these to a large extent. Some duties are added while others are designed different-
ly by this new ordinance. Please refer to the text of this ordinance for a complete overview of the
individual responsibilities of responsible bodies.
▪General obligation to reduce emissions.
▪Only certified companies may maintain, repair or decommission refrigeration systems. The re-
sponsible bodies must verify that these companies are certified.
▪Regular leak tests of stationary refrigeration systems by certified personnel (such as Huber service
engineers). The required test interval is based on the refrigerant filling capacity and the type of
refrigerant, converted to CO22 equivalent.
▪Responsibility of responsible bodies operating a plant to recover F-gases by certified personnel.
▪Obligatory documentation requirement in the refrigeration system’s operation manual, specifying
type and volume of refrigerant used or recovered. The responsible body must keep the records
for at least 5 years after their creation and present it to the responsible authority upon request.
▪Temperature control units with natural refrigerants (NR) are exempt from this Directive.
▪Please refer to the data sheet or name plate of your temperature control unit for the quantity and
type of refrigerant.
▪Additional information about the definition of the inspection interval can be found on our web-
site.
1.3.2 Requirements for operators
Work on the temperature control unit is reserved for appropriately qualified specialists, who have
been assigned and trained by the responsible body to do so. Operators must be at least 18 years old.
Under 18-year olds may operate the temperature control unit only under the supervision of a quali-
fied specialist. The operator is responsible vis-a-vis third-parties in the work area.

Introduction
OPERATION MANUAL Chapter 1
Unichiller® V2.3.0en/07.06.19//17.12
18
1.3.3 Obligations of the operators
Carefully read the operation manual before operating the temperature control unit. Please observe
the safety instructions. When operating the temperature control unit, wear appropriate personal
protective equipment (e.g. safety goggles, protective gloves, non-slip shoes).
1.4 General information
1.4.1 Description of workstation
The workstation is located at the control panel in front of the temperature control unit. The work-
station is determined by the customer's connected peripheries. Accordingly, it must be designed
safe by the responsible body. The workstation design also depends on the applicable requirements
of the German occupational health and safety regulations [BetrSichV] and the risk analysis for the
workstation.
1.4.2 Safety devices to DIN 12876
The rating of your temperature control unit is stated on the data sheet in the appendix.
Classification Temperature
control medium Technical requirements Identification d)
I Non-combustible a) Overheat protection c) NFL
II Combustible b) Adjustable overheat protection FL
III Combustible b) Adjustable overtemperature protection
and additional low-level protection FL
a) Usually water; other fluids only if non-combustible even within the temperature range of an individual fault.
b) The temperature control media must have a combustion point of ≥ 65 °C.
c) The overheat protection can, for instance, can be realized using a suitable fill level sensor or a suitable temper-
ature limiter.
d) Optional at the choice of the manufacturer.
1.4.2.1 Temperature control units (with heater) with electronic low level sensor
The low level protection operates via a pressure sensor in the fluid circuit. The pump and the ther-
mal fluid provide the required pressure at the pressure sensor. Air in the system (fill level too low,
inadequately vented) prevents the pressure from reaching value specified at the pressure sensor.
Temperature control and circulation are interrupted.
Overtemperature protection (for temperature control units with heater)
There is no longer a need for mechanical tools to set the trigger values of the overtemperature
protection. It is replaced by a software engineering tool. The threshold value for the overtempera-
ture protection can be set only if a code, randomly generated by “Pilot ONE”, is entered correctly. As
with the mechanical tool, accidental settings are thus prevented.
Rating of laboratory
thermostats and
laboratory baths
Overview of the tem-
perature thresholds

Introduction
Chapter 1 OPERATION MANUAL
V2.3.0en/07.06.19//17.12 Unichiller®
19
1.4.3 Further protective devices
Emergency strategy – isolate the power supply!
To determine the type of switch or switch combination your temperature control unit is equipped
with, please refer to the connection sketch starting on page 85 in the section »Annex«.
Temperature control units with >Mains isolator< [36] (red/yellow or gray): Turn the >Mains
isolator< [36] to the “0” position!
Temperature control units with >Mains isolator [36] (red/yellow) and additional >Appliance
switch< [37] (gray): Turn the >Mains isolator< [36] to the “0” position! Then turn the >Appliance
switch< [37] to the “0” position!
Temperature control units with >Mains isolator< [36] (gray) and >Emergency stop switch< [70]
(red/yellow): Press the >Emergency stop switch< [70]. Then turn the >Mains isolator< [36] to the
“0” position!
Temperature control units with >Mains switch< [37]:Power supply via socket: Disconnect the
temperature control unit from the power supply. Then turn the >Mains isolator< [37] to the “0”
position! Power supply via hard wiring: Disconnect the power supply by means of the building’s
circuit breaker. Then turn the >Mains isolator< [37] to the “0” position!
Temperature control units without a switch or inside a protective housing: Connection via sock-
et: Disconnect the temperature control unit from the power supply. Connection via hard wiring:
Disconnect the power supply by means of the building’s circuit breaker.
1.4.3.1 Power interruption
Following a power outage (or when switching on the temperature control unit), this function can be
used to determine how the temperature control unit is supposed to respond. This response can be
determined via “Pilot ONE”.
OFF/Standby (Default setting)
After turning the temperature control unit on, thermoregulation is started only after manual input.
ON / Temp. control active
After turning on the temperature control unit, thermoregulation is always started. An INFO appears
for a few seconds. This provides for suppressing the automatic start.
Only valid for temperature control units with an emergency stop switch (optional):
After installing the >Emergency stop switch< [70], automatic starting of the temperature control
process is not possible when turning on the temperature control unit.
Power Failure Auto
If temperature control is active during a power outage, the process will automatically continue after
the power outage.
Only valid for temperature control units with an emergency stop switch (optional):
After installing the >Emergency stop switch< [70], automatic continuation of the temperature con-
trol process is not possible after a power outage.
1.4.3.2 Alarm functions
An alarm is a system state that signals unfavorable process conditions. The temperature control unit
can be programmed so that the plant operator is warned when defined limit values are exceeded.
The response of the temperature control unit to an alarm can be determined. Possible responses
are: Switch off temperature control or control temperature to a safe setpoint (2nd setpoint).
1.4.3.3 Warning messages
Warning messages contain a message about the irregularity of the temperature control unit. These
messages have no further consequences. The plant operator evaluates the relevance of the message
and takes action where necessary.
1.4.3.4 Emergency stop switch (optional)
The >Emergency stop switch< [70] immediately disconnects all poles of the temperature control
unit. Further information on the >Emergency stop switch< [70] can be found on page 46 in Section
»Emergency stop switch (optional): Activate / Deactivate«.

Introduction
OPERATION MANUAL Chapter 1
Unichiller® V2.3.0en/07.06.19//17.12
20
1.5 Exemplary illustrations of the cooling variants
1.5.1 Consequence of inadequate energy dissipation
Room air/cooling water
Consequences of, for instance, contamination of the liquefier fins, inadequate clearance between
temperature control unit to wall/bath wall, room air/cooling water too warm, cooling water differ-
ential pressure too low, suction strainer contamination: The refrigerant in the coolant circuit can no
longer fully discharge the admitted energy to the room air/cooling water. Thus there is not sufficient
liquefied refrigerant available, the condensation temperature and the energy consumption to rise.
Coolant circuit
Consequences of inadequate refrigerant quantity/rising condensation temperature: Not all the
cooling capacity from the coolant circuit is available at the evaporator. This means reduced energy
transmission from the thermal fluid circuit.
Thermal fluid circuit
Consequence of inadequate energy dissipation from the thermal fluid: The thermal fluid can only
dissipate the energy from your application to a limited extent.
Example: Air and
water cooling
Air cooling: Air inlet
Water cooling: Water
connection