WSI TAEevo Tech MINI Operating instructions

TAEevo Tech MINI
WATER CHILLERS
OPERATING AND MAINTENANCE MANUAL
TAEevo Tech MINI 10 UL
DDOMA01434
Original instructions in Italian language (Service)
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OPERATING AND MAINTENANCE MANUAL
- User’s quick guide
TAEevo Tech MINI 10 UL
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The data in this manual are not binding and they can be modified by the manufacturer without notice. Reproduction of this manual is strictly prohibited
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USER’SQUICK GUIDE
ATTENTION
MODIFICATION OF AN UL LISTED PRODUCT
MTA chillers feature an electrical cabinet designed and wired in compliance with the UL508A standard for electrical
enclosures. The UL compliance allows this MTA equipment to meet local code requirements in most locations in the US and
Canada. When a UL Listed product is modified, retrofitted or altered in any way after it leaves the factory, it is necessary to
verify if the product continues to meet the applicable certification safety requirements.
If a modification made to the product in the field (outside of the MTA factory) does NOT affect the electrical characteristics
of the panel installed on the machine, then the UL Listing is not affected and the UL label that was placed on the product at
the factory can remain. Some examples include:
- Making the remote ON / OFF connection (to terminals provided in the panel)
- Making the alarm relay connection (to terminals provided in the panel)
- Making remote terminal connection (to terminals provided in the panel)
- Replacement of panel components with equal components
If a modification made in the field DOES affect the electrical characteristics of the panel installed on the machine, it is not
possible for UL to confirm that the product continues to meet the applicable certification safety requirements. In this case
the field modifications must be specifically inspected and recertified by the appropriate UL agency. Some examples include:
- Replacement of panel components with components that are different than those originally supplied
- Replacement of motors (or other current-drawing devices) that involve the change of components inside the panel
- Addition of devices not provided for by MTA
- Addition of electrical loads not foreseen by MTA
In this case it is the responsibility of the AUTHORITY HAVING JURISDICTION to assess the acceptability of modifications
and/or to determine if modifications are significant enough to require a member of the UL field engineering services staff to
evaluate and/or recertify the modified product. Anyone directly involved with a product (including manufacturers, owners,
contractors, and regulatory authorities) can request a Field Evaluation.
For further clarification, contact MTA USA or visit the UL’s Web site at www.ul.com/field.
ATTENTION
At the first start-up, check the correct operation of all electrical connections.
ATTENTION
Before starting units of this type, ensure that all personnel involved have read and understood Chapter 2 “Safety“ and
follow the procedures set down in Chapter 6 “Start up“.
NOTE
The pump must never run dry.
ATTENTION
The pressure limiting valve is factory set, according to the pump nominal flow.
Before using the unit it is necessary to set the limiting valve according to the plant nominal flow.
0.1 Switching the unit on/off
The unit is switched on and off:
• from the keypad
• from the digital input (remote ON/OFF)
NOTE
In the event of a power supply blackout, when the power is restored the unit will restart operation in its pre-blackout status.
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OPERATING AND MAINTENANCE MANUAL
- User’s quick guide
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0.1.1 Switch-on from the keypad
Power up the unit.
With the unit in standby (OFF) mode press the key.If the unit is on, the display shows the regulator probe value.
If the unit is in standby mode, the display shows .
0.1.2 Switch-on from digital input
NOTE
Refer to the wiring diagram for connection of the digital input.
Power up the unit by closing the digital input contact; the unit switches on; it switches to standby (OFF) if it is opened.
The off command (from keypad or digital input) always overrides the on command. If the unit is switched off from the
keypad, it must be switched back on from the keypad.
When the unit is switched off using the digital input, the display shows ..
0.2 Setpoint
0.2.1 Displaying the setpoint
Press the key to display the setpoint.
0.2.2 Modifying the setpoint
Hold down the key for 3 seconds to activate modification.
Use the and keys to edit the value.
Press the key to confirm or wait for the time-out.
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OPERATING AND MAINTENANCE MANUAL
- Table of Contents
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TABLE OF CONTENTS
USER’SQUICK GUIDE..........................................................................................................................1
0.1 Switching the unit on/off.............................................................................................................. 1
0.1.1 Switch-on from the keypad ............................................................................................................... 2
0.1.2 Switch-on from digital input ............................................................................................................ 2
0.2 Setpoint ........................................................................................................................................ 2
0.2.1 Displaying the setpoint .................................................................................................................... 2
0.2.2 Modifying the setpoint ..................................................................................................................... 2
TABLE OF CONTENTS .........................................................................................................................3
Chapter 1
GENERAL INFORMATION ....................................................................................................................5
1.1 How to interpret the model........................................................................................................... 7
1.2 How to interpret the alphanumeric string.....................................................................................7
Chapter 2
SAFETY ................................................................................................................................................9
2.1 General ......................................................................................................................................... 9
2.2 Liquids to be cooled ..................................................................................................................... 9
2.3 Lifting and transport precautions ............................................................................................... 10
2.4 Precautions to be adopted during installation ............................................................................ 10
2.5 Precautions to be adopted during operation ............................................................................... 10
2.6 Disposal, disassembly and recycling.......................................................................................... 11
2.7 Maintenance precautions............................................................................................................ 11
2.8 Refrigerant gases ........................................................................................................................ 12
2.8.1 Refrigerants safety datasheet ......................................................................................................... 12
Chapter 3
TECHNICAL DATA .............................................................................................................................14
3.1 Data for standard units ............................................................................................................... 14
3.1.1 Dimensions ..................................................................................................................................... 14
3.1.2 Characteristics of pump and fan .................................................................................................... 14
3.1.3 Sound level measurements ............................................................................................................. 15
Chapter 4
DESCRIPTION ....................................................................................................................................16
4.1 Operating principle..................................................................................................................... 16
4.1.1 Refrigeration compressor .............................................................................................................. 16
4.1.2 Casing ............................................................................................................................................ 16
4.1.3 Materials in contact with the liquid to be cooled .......................................................................... 16
4.1.4 Condenser ...................................................................................................................................... 16
4.1.5 Evaporator ..................................................................................................................................... 16
4.1.6 Pump .............................................................................................................................................. 16
4.1.7 Accumulation tank ......................................................................................................................... 16
4.1.8 Fans ............................................................................................................................................... 16
4.2 Overall dimensions..................................................................................................................... 16
4.3 Minimum distances from walls.................................................................................................. 16
4.4 Water and refrigerant circuits..................................................................................................... 16
4.4.1 Water circuit .................................................................................................................................. 16
4.4.2 Refrigerant circuit .......................................................................................................................... 17
4.5 Electrical circuit ......................................................................................................................... 17
Chapter 5
INSTALLATION ..................................................................................................................................18
5.1 Inspection ................................................................................................................................... 18
5.2 Location...................................................................................................................................... 18
5.3 Freeze protection ........................................................................................................................ 19
5.4 Limit operating conditions ......................................................................................................... 19
5.5 Plumbing connections ................................................................................................................ 19
5.5.1 Evaporator water limit features ..................................................................................................... 20
5.6 Electrical connections ................................................................................................................ 20
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Chapter 6
START UP .......................................................................................................................................... 23
Chapter 7
ELECTRONIC CONTROL UNIT........................................................................................................... 24
7.1 LEDs ...........................................................................................................................................24
7.2 Keys ............................................................................................................................................24
7.2.1 Key combinations ...........................................................................................................................25
7.3 Switching the unit on/off ............................................................................................................25
7.3.1 Switch-on from the keypad .............................................................................................................25
7.3.2 Switch-on from digital input ...........................................................................................................25
7.4 Setpoint .......................................................................................................................................25
7.4.1 Displaying the setpoint ...................................................................................................................25
7.4.2 Modifying the setpoint ....................................................................................................................26
7.5 Dynamic setpoint ........................................................................................................................26
7.6 Maximum and minimum temperature ........................................................................................27
7.7 Modifying the value of a parameter............................................................................................27
7.8 Keypad lock ................................................................................................................................28
7.9 Pump ...........................................................................................................................................28
7.10 Displaying the "real setpoint” .....................................................................................................28
7.11 Compressor control.....................................................................................................................28
7.12 Alarms.........................................................................................................................................28
7.12.1 Alarm messages ..............................................................................................................................28
7.12.2 Alarm relay .....................................................................................................................................29
7.13 Parameter list ..............................................................................................................................29
Chapter 8
OTHER COMPONENTS....................................................................................................................... 31
8.1 High pressure switch (HP)..........................................................................................................31
Chapter 9
OPERATION AND MAINTENANCE ..................................................................................................... 32
9.1 Operation ....................................................................................................................................32
9.2 Maintenance................................................................................................................................32
9.2.1 Unit access .....................................................................................................................................32
9.3 Pressure limiting valve................................................................................................................32
9.3.1 Maintenance schedule ....................................................................................................................33
Chapter 10
TROUBLE SHOOTING ........................................................................................................................ 34
Chapter 11
RISK ANALYSIS:RESIDUAL RISK...................................................................................................... 37
APPENDIX.......................................................................................................................................... 41
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OPERATING AND MAINTENANCE MANUAL
Chapter 1 - General information
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CHAPTER 1
GENERAL INFORMATION
The units described in this manual may be referred to below as “WATER CHILLERS”.
This manual is addressed to personnel responsible for installing, using and servicing the unit.
The units were constructed using components made by premium quality manufacturers and the entire design, production and
control process was carried out in compliance with standard ISO 9001.
In the majority of applications the liquid in the user circuit is water so henceforth the term “WATER” will be utilised, even if
the liquid in the user service is different (for example mixtures of water and ethylene or propylene glycol).
Hereinafter the expression “PRESSURE” is used to indicate relative pressure.
The electrical panel has been designed following UL508A standard rule (Industrial Control Panels).
The compressors, fans, pump, condensing and evaporating coils carry the cURus marking.
The following symbols are to be found on the decals affixed to the unit and also in the dimensional drawings and refrigerant
circuit diagrams. The meaning of each symbol is indicated below:
The following warning symbols are shown on the stickers on the unit. If requested, the same stickers are available also in
French. Their meaning is the following:
Process water inlet Process water outlet
Drain point to empty the unit of water Overflow
Electric shock hazard Risk of burns from contact with high-
temperature surfaces
Direction of flow of refrigerant fluid
and water circuit
Indication of the axis of reference for
lifting operations
Water filling point Risk of injury due to sharp edges
WARNING SYMBOL DESCRIPTION
To maintain overcurrent, short-circuit, and ground-fault
protection, the manufacturer’s instructions for selection of
overload and short circuit protection must be followed to
reduce the risk of fire or electric shock.
In an overload or a fault current interruption occurs, circuits
must be checked to determine the cause of the interruption.
If a fault condition exists, the current-carrying components
should be examined and replaced if damaged, and the
integral current sensors must be replaced to reduce the risk
of fire or electric shock.
ASSE DI SOLLEVAMENTO
AXIS OF EQUILIBRIUM
GLEICHGEWICHTSACHSE
EMPLACEMENT DE FORCHES
PUNTO DE ELEVACION
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Hazardous voltage.
All doors must be closed before energizing the panel.
Read and understand operator’s manual before using this
machine.
Failure to follow operating instructions could result in death
or serious injury.
Moving parts can crush and cut.
Do not operate with guard removed.
Follow lockout procedure before servicing.
Hazardous voltage.
Disconnect power before servicing or cleaning.
WARNING SYMBOL DESCRIPTION
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OPERATING AND MAINTENANCE MANUAL
Chapter 1 - General information
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1.1 How to interpret the model
1.2 How to interpret the alphanumeric string
The alphanumeric string is shown on the metal data plate on the last page of this manual.
Ensure casters are locked before operating.
Risk of electric shock.
Orange wires inside the panel remain energized when the
main switch is in the off positions.
To service these circuits, shut off the equipment at the main
service disconnect.
MODEL DESCRIPTION
Guideline power of compressor expressed in HP
E = hermetic compressor
A = air-cooled condenser
T = tank; chiller with storage tank.
This symbol shown alongside appears in some refrigerant circuit diagrams and electrical
diagrams. This symbol refers to the alphanumeric string reported in the manual. The upper
box (X) identifies the position of the string, the lower box (Y) identifies the assigned value.
The empty alphanumerical string is circled in the adjacent figure; each
position in the upper row is associated with an alphanumeric value in the
lower row (0, 1, 2, A, B, etc.) and each character is associated with a
specific feature of the unit.
POS. VALUE DESCRIPTION
MATERIAL CABINET 1 0 STANDARD
1 STAINLESS STEEL
REFRIGERANT 2 2 R134a
3 R410A
VOLTAGE 3 2 230/1/50
C 230/1/50-60
P 230/2/60
LASER 4 A YES
B NO
PUMP 5 I P3
L P5
WARNING SYMBOL DESCRIPTION
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OPERATING AND MAINTENANCE MANUAL
Chapter 1 - General information
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ATTENTION
This manual, which is addressed to users, installers, and service personnel, supplies all the technical information
required to install and work with the unit and to perform the routine maintenance operations required to maximise its
working life.
Use only genuine parts when carrying out routine maintenance or repairs.
Requests for SPARE PARTS and any INFORMATION concerning the unit must be made to your dealer or nearest service
centre, specifying the MODEL and SERIAL NUMBER shown on the unit’s dataplate and on the last page of this manual.
WESTEC CONNECTORS 6 0 NO
1 YES
LEVEL SENSOR 7 0 NO
1 YES
KIT TYPE 8 A NO KIT
H SECTIONING HYDRAULIC KIT
PRODUCT TYPE 9 0 STANDARD
X SPECIAL
POS. VALUE DESCRIPTION
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OPERATING AND MAINTENANCE MANUAL
Chapter 2 - Safety
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CHAPTER 2
SAFETY
This unit is designed to ensure the best guarantees of safety and efficiency in its intended use, on the condition that it is
installed, commissioned, and serviced in compliance with the instructions given in this manual.
The manual must therefore be studied by all those who want to install, use or maintain the unit.
The unit contains electrical components that operate at mains voltage and also moving parts.
All work on the unit must be carried out only after disconnecting the electrical supply. Maintenance operations involving
work inside the unit must be performed by skilled and adequately qualified personnel equipped with suitable protection
means (active and passive, e.g. work gloves) to ensure maximum safety.
Keep unauthorized persons (e.g. children) away from the place of installation of the unit.
2.1 General
When handling or maintaining the unit and all auxiliary equipment, personnel must operate with care observing all
instructions concerning health and safety at the installation site.
ATTENTION
Numerous accidents that occur during operation and maintenance of the units are caused by failure to comply with
basic safety rules and precautions.
An accident can often be avoided by recognising a situation that is potentially hazardous.
The user must ensure that all personnel involved in operating and servicing the unit have read and understood all the
warnings, precautions, prohibitions and notes given in this manual and affixed to the unit. Improper operation or maintenance
of the unit and auxiliary equipment can be dangerous and can cause serious or fatal accidents.
We cannot anticipate every possible circumstance which might constitute a potential hazard.
The warnings in this manual are therefore not all-inclusive.
If the user adopts operational procedures or uses tools or working procedures that are not specifically recommended, he must
take care to ensure that the unit and the auxiliary equipment are not damaged or made unsafe and that no risks emerge in
relation to persons or property. Any improper use of the unit will relieve the manufacturer from any liability for possible
personal injury or property damage.
Arbitrary modifications made to the unit will automatically invalidate all forms of guarantee provided by the manufacturer.
ATTENTION
The hot / chilled water produced by units cannot be used for hygiene/sanitary or food applications. If it is
used for the above purposes, the installer must install an intermediate exchanger.
If the intermediate exchanger is not present, the installer must affix a warning notice to the effect “non potable
water”.
2.2 Liquids to be cooled
The liquids to be cooled must be compatible with the materials used.
These can be water or mixtures of water and glycol, for example. In case of distilled or demineralised water, check the
compatibility with materials.
It is advisable to work with pH between 7 and 8. If using chemical additives consult your supplier for more information
concerning compatibility with materials in contact with the process fluid of the chiller.
The liquids to be cooled must not be flammable.
ATTENTION
If the liquids to be cooled contains dangerous substances (e.g. ethylene glycol) it is very important to collect any liquid
which leaks because it could cause damages to the ambient. Furthermore, when the chiller is no longer used, dangerous
liquids must be disposed of by firms specialised and authorised for treating them.
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OPERATING AND MAINTENANCE MANUAL
Chapter 2 - Safety
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2.3 Lifting and transport precautions
Avoid injury by using a hoist to lift heavy loads.
Check all chains, hooks, shackles and slings are in good condition and are of the correct capacity.
They must be tested and approved according to local safety regulations.
Cables, chains or ropes must never be attached directly to lifting eyes.
Always use an appropriate shackle or hook properly positioned. Arrange lifting cables so that there are no sharp bends.
Use a spreader bar to avoid lateral loading of hooks and eyebolts.
When a load is lifted from the ground keep well clear of the area beneath the load and the immediately surrounding area.
Keep lifting acceleration and speed well within safety limits and never leave a suspended load attached to a hoist any longer
than strictly necessary.
The weight values shown in the table below were obtained with the unit empty and with P3 pump.
The manufacturer does not supply load spreaders, lifting straps or hooks with the unit.
NOTE
Weight values are guideline, with the water circuit empty. The values may vary in relation to the configuration of the unit.
Refer to the overwrap and the data plate.
NOTE
The unit is complete with eyebolts for lifting, which can be used once the packaging has been removed.
2.4 Precautions to be adopted during installation
The connections to be prearranged concern the process water circuit. For connection to the mains electrical supply consult
the technical documentation attached to the unit..
2.5 Precautions to be adopted during operation
The unit must be operated by competent personnel under the guidance of a qualified supervisor.
All water pipelines must be painted or clearly marked in compliance with local safety prescriptions in force in the place of
installation.
ATTENTION
Do not remove or tamper with safety devices, protections, or the insulating materials installed in the unit and in the
auxiliary equipment.
All electrical connections must comply with local codes.
The unit and its auxiliary equipment must be connected to earth and protected against short circuits and overloads.
Model TAEevo Tech MINI 10
Weight (lb) 275
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OPERATING AND MAINTENANCE MANUAL
Chapter 2 - Safety
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When mains power is switched on, lethal voltages are present in the electrical circuits and extreme caution must be exercised
if any work must be carried out on the electrical system.
Do not open the electrical equipment guard panels while the circuit is energized. Operations that require intervention with the
electrical circuit energized must be performed only by qualified personnel using appropriate equipment and wearing apparel
and devices designed to protect against electrical hazards.
2.6 Disposal, disassembly and recycling
The product was designed and built with recyclable materials.
The correct waste sorting for the subsequent start-up of the equipment disposed of for recycling, treatment and for
compatible environmental disposal, contributes to prevent possible negative consequences on the environment and health. It
also favour the recycling of the materials the equipment is made up with.
The unit may include all or some of the materials listed below:
• Refrigerant fluid R410A
• Copper parts
• Aluminium parts
• Carbon Steel parts
During dismantling, the compressor, pumps, fans, exchangers (if working) can be recovered for possible re-use thanks to
specialised centres.All materials must be recycled or disposed of in compliance with the corresponding national regulations.
Refrigerant, oil and possible anti-freeze solutions recycling must be done by specialised companies in compliance with the
corresponding local and national legislation.
Electrical and electronic materials cannot not be disposed of together with domestic general waste. They must be disposed of
in special collection centres.
Units must be treated at a centre specialised in re-conditioning, recycling and recovery of materials.
2.7 Maintenance precautions
ATTENTION
When it is necessary to discharge waste material do not pollute water pipelines, groundwater or watercourses.
Avoid the combustion of materials that could produce fumes that are toxic and harmful when released into the atmosphere.
Protect the environment by using only approved methods of disposal.
Keep a written record of all work carried out on the unit and the auxiliary equipment. The frequency and the nature of the
work required over a period can reveal adverse operating conditions that should be corrected.
ATTENTION
Use only the refrigerant specified on the data plate of the unit.
Make sure that all instructions concerning operation and maintenance are strictly followed and that the complete unit, with all
accessories and safety devices, is kept in good working order. The accuracy of pressure and temperature gauges must be
regularly checked. If values are discovered that exceed the permissible tolerances, the gauges must be replaced.
ATTENTION
Do not perform welding procedures or other operations that can produce heat in the vicinity of elements containing oil
or flammable liquids. Systems which may contain oil or flammable liquids must be completely purged and cleaned, e.g. with
steam, before carrying out such operations.
Components in the vicinity must be protected with non-inflammable material and, if the operation is to be performed close to
parts of the lubrication system or in the vicinity of components that may contain oil or inflammable liquids, the system must
first be purged.
Never use an open flame as a light source to inspect parts of the unit.
For all units establish a suitable time interval for cleaning procedures.
• Stainless Steel parts
• PVC parts
• CFC-free synthetic insulating material
• polystyrene parts
• Polyester oil
• Brass
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ATTENTION
If replacement parts are needed use only original spares.
Take care not to damage pressure limiting devices.
All guards must be refitted after carrying out repair or maintenance work.
Do not use flammable liquids to clean the unit when it is running. If chlorinated hydrocarbon non-flammable fluids are used
for cleaning, safety precautions must be taken against any toxic vapours that may be released.
ATTENTION
Before removing any panels or dismantling any part of the unit, carry out the following operations:
- Isolate the unit from the electrical power supply by disconnecting the supply upstream of the power feeding line.
- Lock out the disconnect switch in the “OFF” position by fitting a padlock.
- Affix a tag to the disconnect switch handle stating “WORK IN PROGRESS - DO NOT SWITCH ON”.
- Do not set the electrical power switch to ON or attempt to start the unit if it has been tagged out with a warning sign.
Coloured tracers can be used in service-maintenance operations.
Inspect all refrigerant circuit unions including connectors, flanges, and more generally all critical points (open unions) in
order to prevent possible leakage of refrigerant gas.
2.8 Refrigerant gases
The units are charged with R410A refrigerant.
Do not replace or mix one gas with another because different gases are not mutually compatible.
To clean out a very heavily contaminated refrigerant system, e.g. after a refrigerant compressor burnout, a qualified
refrigeration engineer must be consulted to carry out the task.
The manufacturer’s instructions and local safety regulations should always be observed when handling and storing high
pressure gas cylinders.
2.8.1 Refrigerants safety datasheet
Denomination: R410A (50% Difluoromethane (R32); 50% Pentafluoroethane).
INDICATION OF HAZARDS
Major hazards: Suffocation.
Specific hazards: Rapid evaporation can cause frostbite.
FIRST AID MEASURES
General information: Do not attempt to administer liquids or solids to persons who have lost consciousness.
Inhalation: Move victims to the open air. Use oxygen or artificial respiration if necessary.
Do not administer adrenaline or similar substances.
Contact with the eyes: Wash thoroughly with plenty of clean water for at least 15 minutes and seek medical
assistance.
Contact with the skin: Wash immediately in plenty of clean water. Remove contaminated clothing immediately.
FIRE-FIGHTING MEASURES
Means of extinction: Any.
Specific hazards: Pressure rise.
Specific methods: Cool containers with water spray.
MEASURES IN THE EVENT OF ACCIDENTAL LEAKAGE
Individual precautions: Evacuate personnel to safe muster points. Provide adequate ventilation. Use personal
protective equipment.
Environmental precautions: Evaporates.
Cleaning methods: Evaporates.
HANDLING AND STORAGE
Handling
Technical measures/ precautions: Ensure the presence of sufficient ventilation and/or air extraction means in the
workplace.
Recommendations for safe use: Do not breath fumes or aerosol.
Storage: Close hermetically and store in a cool, dry and well-ventilated place. Store in its original
containers. Incompatible products: explosives, flammable materials, organic peroxide
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CONTROL OF EXPOSURE/INDIVIDUAL PROTECTION
Control parameters: AEL (8-h and 12-h TWA) = 1000 ml/m3 for each of the two components.
Respiratory protection: For rescue and maintenance work in tanks use autonomous breathing apparatus. The
vapours are heavier than air and can cause suffocation, by reducing the oxygen available
for breathing.
Protection of the eyes: Safety spectacles.
Protection of the hands: Rubber gloves.
Hygiene measures: Do not smoke.
PHYSICAL AND CHEMICAL PROPERTIES
Colour: Colourless.
Odour: Ethereal.
Boiling point: -60.8°F at atmospheric pressure.
Flash point: Non-flammable.
Relative density: 1.08 kg/l at 77°F.
Solubility in water: Negligible.
STABILITY AND REACTIVITY
Stability: No reactivity if used in compliance with instructions.
Materials to avoid: Highly oxidising materials. Incompatible with magnesium, zinc, sodium, potassium and
aluminium.
Incompatibility is more critical if the metal is present in the form of powder or if surfaces
have been recently unprotected.
Hazardous decomposition
products:
These products are halogen compounds, hydrofluoric acid, carbon monoxides (CO,
CO2), carbonyl halides.
TOXICOLOGICAL INFORMATION
Acute toxicity: (R32) LC50/inhalation/4 hours/lab. rats 760 ml/l
(Pentafluoroethane) LC50/inhalation/4 hours/lab. rats 3480 mg/l
Local effects: Concentrations significantly above the TLV can cause narcotic effects.
Inhalation of products in decomposition can lead to respiratory difficulty (pulmonary
oedema).
Long-term toxicity: No carcinogenic, teratogenic, or mutagenic effects observed in laboratory animals.
ECOLOGICAL INFORMATION
Global warming potential GWP
(EU n° 517/2014):
2088
Ozone depletion potential ODP
(R11=1):
0
Considerations on disposal: Usable with reconditioning.
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OPERATING AND MAINTENANCE MANUAL
Chapter 3 - Technical data
TAEevo Tech MINI 10 UL
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The data in this manual are not binding and they can be modified by the manufacturer without notice. Reproduction of this manual is strictly prohibited
ENGLISH
EN
CHAPTER 3
TECHNICAL DATA
The data plate affixed to the unit bears the following technical data:
3.1 Data for standard units
3.1.1 Dimensions
See attached drawings.
3.1.2 Characteristics of pump and fan
NOTE
The values in the table may vary in relation to the unit model and configuration. In this case refer to the offer data.
MODEL and CODE The model number and the code identify the size of the unit and the type of
construction.
MANUAL Code number of the manual.
SERIAL NUMBER Construction number of the unit.
MONTH YEAR OF
CONSTRUCTION
Year and month of unit’s final testing.
VOLTAGE/PHASES/FREQUENCY Electrical power supply characteristics.
FLA COMPRESSOR Motor rating FLA (compressor).
FLA FAN Motor rating FLA (fan).
FLA PUMP Motor rating FLA (pump).
MCA Minimum circuit ampacity.
MOP Maximum rating of overcurrent protective device.
MAX. ABSORPTION Unit current draw in limit operating conditions.
INSTALLED POWER Unit power input in limit operating conditions
PROTECTION RATING According to European standard EN 60529.
FIELD WIRING DIAGRAM Identifies the electrical diagram number.
COOLING CIRCUIT
REFRIGERANT Refrigerant fluid in the unit.
REFRIGERANT CHARGE Quantity of refrigerant fluid contained in the unit.
REFRIG. MAX. WORKING PRESS. Refrigerant circuit design pressure
MAX. TEMPERATURE Refrigerant circuit design temperature
UTILIZATION CIRCUIT FLUID Type of user fluid utilised by the unit (normally water)
MAX WORKING PRESSURE Max. design pressure of the user circuit.
MAX. TEMPERATURE Maximum design temperature of the user circuit; this should not be confused
with the maximum working temperature which is established when the offer is
made.
SOUND PRESSURE LEVEL Free field sound pressure level in hemispherical radiation conditions (open
field) at a distance of 3,2 FT from the condenser side of the unit and a height of
5,2 FT from the ground.
AMBIENT TEMPERATURE Minimum and maximum values of ambient air temperature.
WEIGHT Weight of the unit before packing.
PRODUCTION LOCATION Location of unit’s production.
Model TAEevo Tech MINI 10
Tank
capacity water volume (gal) 5.8
Pump P3 rated power (kW) 0.52
Axial flow
fan total airflow (gpm) 26.3
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OPERATING AND MAINTENANCE MANUAL
Chapter 3 - Technical data
TAEevo Tech MINI 10 UL
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EN
ENGLISH
NOTE
The pressure head is the pressure head available in the user’s premises. The installed pump my differ with respect to the
standard pump.
Available head
NOTE
The pump must never run dry.
3.1.3 Sound level measurements
* at distance of 3,2 FT
** global
Test conditions
Noise levels refer to operation of the unit at full load in nominal conditions.
Sound pressure level in hemispherical irradiation conditions at a distance of 3,2 FT from the condensers side of the unit and
height of 5,2 FT from the ground. Values with tolerance of ± 2 dB.
Sound pressure level: according to ISO 3744.
Lp dB(A) * Lw dB(A) **
TAEevo Tech MINI 10 68 81
Available head [psi]
Flow [gpm]
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OPERATING AND MAINTENANCE MANUAL
Chapter 4 - Description
TAEevo Tech MINI 10 UL
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ENGLISH
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CHAPTER 4
DESCRIPTION
4.1 Operating principle
All the chillers described in this manual work on the basis of the same principle. A refrigerant circuit cools the exchange
surface of an evaporator through which the liquid to be cooled passes.
The evaporator finds inside the tank.
The refrigerant compressor is controlled by an electronic control unit.
The electronic control unit controls the temperature of the water in the tank to maintain it within preset limits.
4.1.1 Refrigeration compressor
Of rotary hermetic type, cooled by the aspirated refrigerant and equipped with thermal cutout protection.
The compressor is mounted on anti-vibration supports.
4.1.2 Casing
The entire plinth, the uprights, and the outer panels are made of galvanized carbon steel sheet and are assembled by means of
screws and/or rivets. All panels undergo phosphor degreasing treatment followed by epoxy polyester power coating.
The base and all structure, except for the internal elements, can be in stainless steel AISI 304.
The frame is designed to allow easy access to all components of the unit.
4.1.3 Materials in contact with the liquid to be cooled
Stainless steel, copper, brass, plastics, aluminium.
4.1.4 Condenser
Condensation occurs in finned core coils composed of copper tubes and headers, corrugated aluminium fins, and galvanized
sheet metal shoulders.
4.1.5 Evaporator
The evaporator is of the finned core type; water flows in contact with the finned surface at velocities such as to ensure low
pressure drops, while the refrigerant flows through the tubes.
In these models the exchanger is protected from the risk of ice formation caused by low evaporation temperatures, with anti-
freeze strategies handled by the electronic controller. The evaporator water outlet temperature is controlled by a probe. If
room/water temperatures lower than 41°F are required, a mixture of water and glycol must be used.
To drain the circuit use the appropriate discharge.
4.1.6 Pump
Body in brass, base in brass, impeller in anti-corrosion brass, shaft in AISI420, key in AISI316, seeger in AISI420.
NOTE
The pump must never run dry.
4.1.7 Accumulation tank
Plastic accumulation tanks are used.
These units are furnished with a tank, finding in vertical position over the unit’s base.
The tanks contain the evaporator.
The hydraulic circuit is of atmospherical type and by a plug, positioned on the top of the unit, it is possible to fill the unit.
A water level gauge is provided.
4.1.8 Fans
The fans are of axial type with ON/OFF operation.
4.2 Overall dimensions
See attached drawings.
4.3 Minimum distances from walls
See attached drawings.
4.4 Water and refrigerant circuits
See attached drawings.
4.4.1 Water circuit
The water flowing through the evaporator pipes cools and flows into the tank.
Then the water is sucked by a peripheric pump which sends it directly to the user.
A pressure gauge is connected to the pump output. It indicates the outlet water pressure of the plant.
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OPERATING AND MAINTENANCE MANUAL
Chapter 4 - Description
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ATTENTION
The pressure limiting valve is factory set, according to the pump nominal flow.
Before using the unit it is necessary to set the limiting valve according to the plant nominal flow.
4.4.2 Refrigerant circuit
The refrigerant is pumped by the refrigerant compressor to the condenser. The condenser is a heat exchanger and is cooled by
an air flow produced by a fan.
After the condenser, the refrigerant liquid passes through a drying filter and a thermostatic valves.
The refrigerant then enters the evaporator’s circuit in which it flows in counter-current with respect to the water to be cooled.
When it exits the evaporator, the refrigerant is again sucked by the compressor and the cycle repeats itself.
The refrigerant circuit is also furnished with a high pressure switch (HP) of automatic reset type.
The refrigerant circuit, is equipped with the following components:
• refrigerant fluid utilised R410A;
• hermetic rotary compressor;
• high refrigerant pressure switch;
• thermostatic lamination valve complete with external pressure equalizer;
• filter dryer;
• liquid sight-glass;
• schrader service valves;
• by-pass solenoid valve for equalising the pressure at compressor switch-off.
For more information consult the attached diagrams.
4.5 Electrical circuit
See the enclosed electrical diagrams.
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OPERATING AND MAINTENANCE MANUAL
Chapter 5 - Installation
TAEevo Tech MINI 10 UL
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CHAPTER 5
INSTALLATION
ATTENTION
Before installing or operating these units, ensure that all personnel involved have read and understood Chapter 2
“Safety“. The unit must be installed in accordance with current national legislation in the country of use.
5.1 Inspection
As soon as the unit has been unpacked check it carefully for damage.
5.2 Location
1. The unit can be installed either outdoors or in an enclosed environment, depending on the degree of IP protection
of the electrical panel and the unit itself.
2. If the unit is installed indoors the place of installation must be well ventilated. In certain cases it may be necessary
to install ventilation fans or extractor fans in order to reduce room temperature.
3. The ambient air must be clean, avoid sea ambients (brackish air), and not contain flammable gas or corrosive
solvents.
4. The minimum and maximum working ambient temperature are specified on the unit data plate. Ensure that the unit
is not installed in flows of hot air emitted by other equipment.
In extreme temperature conditions, the protection devices may trip.
5. Do not obstruct or interfere with the air flow produced by the unit; comply strictly with the minimum spaces/
distances specified in the installation drawings.
6. The machine must be installed on a perfectly horizontal flat surface, built and calculated to withstand the
machine’s operating weight, especially in the contact points highlighted in the installation drawing. In the event
of installations which fail to comply with the above requirements, the manufacturer’s warranty cover will
immediately become null and void and the unit could malfunction or even lock out.
7. Leave free space around the unit for access during service interventions (see Attachments).
8. Do not install the plant in sites exposed to strong winds; if unavoidable, install suitable windscreens.
See point 1.
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OPERATING AND MAINTENANCE MANUAL
Chapter 5 - Installation
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5.3 Freeze protection
Even if the minimum operating temperature is higher than 32°F, during shutdown periods in the cold season the unit may be
subject to temperatures that are lower than 32°F.
In such cases if the water is not drained out of the unit ethylene or propylene glycol antifreeze should be added to the water
in the following percentages:
In accordance with the chilled water outlet temperature, to avoid the formation of ice ethylene or propylene glycol antifreeze
should be added to the water in the following percentages:
NOTE
The water flow rate must correspond to the value stated in the technical specifications or in the selection software.
The conditions specified in the table do not guarantee anti-freeze protection with the machine operating in bypass mode
between water delivery and return, and with the machine water inlet and outlet fittings shut off.
ATTENTION
For uses with setpoints below 41°F reduce the LS parameter and adjust the ALL parameter as appropriate.
For water outlet temperatures lower than 42.8°F you must add a suitable quantity of antifreeze solution.
5.4 Limit operating conditions
(1) For temperatures below 41°F use antifreeze solutions (see 5.3 “Freeze protection” ).
5.5 Plumbing connections
It is recommended to insert a filter of “Y” (with mesh 0.019 to 0.031 in) type on the
water inlet connection, in order to stop eventual impurities of water which could cause
big damages to the pump.
1.Connect the chiller to the water piping. See the overall dimension drawings for the
size and type of connections.
2.Provide two cocks (inlet and outlet) to by-pass the machine for maintenance
purposes without having to empty the water circuit of the user.
3.Fill the water receptacle by unscrewing the plug of the receptacle and filling the
circuit with water (for example using a hose connected to the cock) until the level in
the receptacle is about half-way between the min. e max. indicated levels. The filling
of tank before starting-up the unit is very important as the pump can not operate
without water.
The receptacle used for filling the circuit acts as an open expansion tank. It is therefore
necessary to pay attention to the volumes and dimensions in play.
Ambient T up to
°F
Ethylene Glycol
[% by weight]
Propylene Glycol
[% by weight]
32 0 0
23 15 18
14 25 27
Water outlet T up to
°F
Ethylene Glycol
[% by weight]
Propylene Glycol
[% by weight]
45 0 0
37 20 20
32 20 25
27 25 30
23 30 30
Minimum Maximum
Ambient air temperature °F 41 107
Evaporator water inlet temperature °F 32 (1) 95
Evaporator water outlet temperature °F 23 (1) 86
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