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MAINTENANCE AND OPERATING MANUAL

Chapter 8 - Other components setting

The data inside this manual are not binding and they can be modified by the manufacturer without notice.

All rights reserved.

TAEevo015÷351

8 . 4

F a n s p e e d r e g u l a t i o n

The fan speed regulation can be carried out by means of a pressure switch (FP) in ON/OFF modality or by means of a pressure transducer (speed
regulator).

1. Fan pressure switch (FP)

In these units a pressure switch detects the refrigerant compressor outlet pressure and controls the fan operation powering them on or
off.
The pressure switch FP is screwed to the refrigerant circuit piping with SCHRAEDER valves (with needle) which prevent leakage
during replacement.
The TRIP and RESET values of the pressure switch depend upon the refrigerant gas used and are listed in the table below:

Axial fans

Centrifugal fans (NOT present in models with 460/3/60 supply)

2. Speed regulator (NOT present in models with 460/3/60 Hz supply, with centrifugal fans and in TAEevo 015÷020)

The unit is furnished with a speed regulator of fan rotation, which operates to maintain the condensing pressure within a pre-fixed
value.
These units are furnished with a pressure transducer positioned on the refrigerant compressor outlet pipeline. It commutates the
measured pressure value into an electric signal, sent to the speed regulator. For example, if the temperature of the air sent to the
condenser decreases, the pressure transducer will measure a decreasing of the condensing pressure. This pressure decreasing is sent
to the speed regulator which will reduce the fan speed and consequently, the condenser air flow will be reduced. Analogously, when
the air temperature to the condenser and the condensing pressure increase, the regulator will increase continuously the fan speed to
increase the air flow through the condenser.
The following graphic shows the progress of the fan rotation speed according to the condensing pressure changings.

Pressure switch

Refrigerant

TRIP

RESET

bar

PSI

°C

°F

bar

PSI

°C

°F

Axial fans

FP

R407C

18

261

46.4

115.5

14

203

37.0

98.6

Pressure switch

Refrigerant

TRIP

RESET

bar

PSI

°C

°F

bar

PSI

°C

°F

Centrifugal fans

TAEevo 031÷051

FP

R407C

18

261

46.4

115.5

14

203

37.0

98.6

Centrifugal fans

TAEevo 081÷351

FP1

R407C

16.3

236.4

42.6

108.7

12.5

181.2

32.9

91.2

Centrifugal fans

TAEevo 081÷351

FP2

R407C

18

261

46.4

115.5

14

203.0

37.0

98.6

TAEevo 051÷161

TAEevo 201÷351

FP1

FP2

ELECTRICAL
BOARD
SIDE

ELECTRICAL
BOARD
SIDE

FP1

FP2

% of rotation speed

condensing
pressure [bar g]

0%

Vmax

Vmin

P min

P max

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Содержание TAEevo015

Страница 1: ...Painting systems machines 2FC IMPIANTI SRL Via G Marconi 20 1 35010 Villanova di CSP PD Italia Water chillers 1 5 1 Water chillers ...

Страница 2: ...WATER CHILLERS MAINTENANCE AND OPERATING MANUAL 38178800500 TAEevo015 351 Original instructions ...

Страница 3: ......

Страница 4: ...e fans 10 3 1 3 Sound Level Measurements 11 DESCRIPTION 13 4 1 Components 13 4 2 Cooling circuit 13 4 3 Compressors 13 4 4 Condenser 13 4 5 Evaporator 13 4 6 Tank 13 4 7 Pump 14 4 8 Fans 14 4 9 Casing 14 4 10 Materials in contact with the liquid to be cooled 15 4 11 Minimum distances from walls in the installation ambient 15 4 12 Electrical circuit 15 4 13 Negative ambient temperatures not present...

Страница 5: ...o display the Set Point 28 7 13 2 How to modify the Set Point 28 7 14 Compressors unloading function 28 7 15 Probe key 28 OTHER COMPONENTS SETTING 29 8 1 Compressor integral protection PI 29 8 2 Refrigerant high and low pressure switches 29 8 3 Compressor operation 29 8 3 1 Compressor regulation graphic in Chiller mode 29 8 4 Fan speed regulation 30 8 5 Level sensor 31 OPERATION AND MAINTENANCE 33...

Страница 6: ...ns the liquid of the user circuit is water and the term WATER will be used even if the liquid of the user circuit is different from water e g a mixture of water and glycol Here below the term PRESSURE will be used to indicate the gauge pressure The following symbols are shown on the stickers on the unit as well as on the overall dimension drawing and refrigeration circuits in this manual Their mea...

Страница 7: ...ation operation and carrying out routine maintenance operations to ensure long life If spare parts are required this must be original Requests for SPARE PARTS and for any INFORMATION concerning the unit must be sent to the distributor or to the nearest service centre providing the MODEL and MACHINE NUMBER shown on the machine data plate and on the first page of this manual MODEL DESCRIPTION refrig...

Страница 8: ...ere is no risk to persons or property Any improper use of the machine 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 cold water produced by MTA units cannot be used directly for domestic hygiene or food applic...

Страница 9: ...trical components or associated equipment while voltage is applied unless it is necessary for measurements tests or adjustments Such work should be carried out only by a qualified electrician equipped with the proper tools and wearing appropriate body protection against electrical hazards 2 6 M a i n t e n a n c e a n d r e p a i r p r e c a u t i o n s ATTENTION When disposing of parts and waste ...

Страница 10: ...conveying WORK IN PROGRESS DON NOT APPLY VOLTAGE Do not switch on electrical power or attempt to start the unit if a warning label is attached Coloured tracers can be used in service maintenance operations Inspect all refrigerant circuit joints including connectors flanges and more generally all critical points open joints in order to prevent possible leakage of refrigerant gas 2 7 R e f r i g e r...

Страница 11: ...RTIES Colour Colourless Odour Similar to ether Boiling point 43 9 C at atm press Flammability point Non flammable Relative density 1 138 kg l at 25 C Solubility in water Negligible STABILITY AND REACTIVITY Stability No reactivity if used with the relative instructions Materials to avoid Alkaline metal earthy alkaline metals granulated metals salts Al Zn Be etc in powder Hazardous decomposition pro...

Страница 12: ...fluid in the unit REFRIGERANT QUANTITY This is the quantity of refrigerant fluid contained in the unit For TAEevo 015 031 models MAX COOLING PRESSURE This is the design pressure of the refrigeration circuit MAX COOLING TEMPERATURE This is the design temperature of the refrigeration circuit For TAEevo 051 models and upper models MAX COOLING PRESSURE HP SIDE This is the design pressure of the refrig...

Страница 13: ... Hz supply number of fans 1 1 1 2 available head Pa PSI 166 0 02 185 0 02 260 0 03 140 0 02 total air flow m3 h gpm 6900 30379 6400 28178 9200 40506 13600 59878 Table 4 CHARACTERISTICS OF STANDARD UNITS Model 121 161 201 251 301 351 Tank capacity water volume litres galUS 255 67 255 67 350 92 350 92 350 92 350 92 PUMP P3 water flow rate m3 h gpm 3 0 18 7 0 79 3 3 7 18 8 4 79 3 3 9 18 8 8 79 3 4 4 ...

Страница 14: ...t with 460 3 60 Hz supply 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 1 m 3 2 FT from the condenser side of the unit and height of 1 6 m 5 2 FT from the ground Values tolerance 2 dB Sound power level in compliance with ISO 3744 Fan Lp dB A Lw dB A TAEevo 015 axial 67 4 8...

Страница 15: ...12 MAINTENANCE AND OPERATING MANUAL Chapter 3 Technical data The data inside this manual are not binding and they can be modified by the manufacturer without notice All rights reserved TAEevo015 351 ...

Страница 16: ...ected against overheating of the windings by an internal module that monitors their temperature and upstream by magnetothermic circuit breakers These components are housed in a closed but easily accessible compartment 4 4 C o n d e n s e r Condensation occurs through fin pack coils consisting of copper tubes and collectors aluminium fins and shoulders in galvanised sheet 4 5 E v a p o r a t o r Th...

Страница 17: ... insulation class to assure the external working with all types of climates The assembly is completed with a superior support to the fan safety protection grill Centrifugal fans NOT present in models with 460 3 60 supply Can be installed exclusively on models higher than TAEevo031 These are double drive fans with the fanwheel coupled directly to the motor shaft and they feature ON OFF control The ...

Страница 18: ...s steel alternatively external plate evaporator prismatic atmospheric tank The pump mechanical seals are made of ceramics graphite and or EPDM 4 1 1 M i n i m u m d i s t a n c e s f r o m w a l l s i n t h e i n s t a l l a t i o n a m b i e n t See enclosures 4 1 2 E l e c t r i c a l c i r c u i t For the electrical connections see Chapter 5 Installation Installation and consult the enclosed dr...

Страница 19: ...16 MAINTENANCE AND OPERATING MANUAL Chapter 4 Description The data inside this manual are not binding and they can be modified by the manufacturer without notice All rights reserved TAEevo015 351 ...

Страница 20: ...rting its weight 5 Leave at least one metre around the unit to permit access during service operations 6 Do not obstruct or disturb the condenser s flow of thermal exchanging air 5 3 A n t i f r e e z e p r o t e c t i o n Even if the minimum working ambient temperature is above 0 C it is possible for the machine during stoppages in the cold seasons to find itself in an environment with a temperat...

Страница 21: ...the tank by operating on the manual valve If there are frequent air infiltrations into the water circuit it is advisable to install an automatic bleed valve 4 If the machine is supplied without a pump make sure that the pump installed by the user has the suction directly connected to the tank outlet NOTE The pump must never run dry ATTENTION If the unit is furnished without hydraulic group it is n...

Страница 22: ...k to ensure the absence of air bubbles and contaminants If the pump runs noisily or emits anomalous noise it may be necessary to bleed the liquid circuit in order to prime the pump The procedure is as follows unscrew the filler breather plug at the top of the pump fill the hydraulic circuit until water starts to overflow from the filled hole refit the plug and tighten it Repeat the operation if th...

Страница 23: ...supply in the event of insulation failure protection against indirect contacts in compliance with IEC 364 by means of a differential device normally with operation nominal current of 0 03 A 3 at the beginning of the electrical supply cable must be guaranteed a protection against direct contacts with a protection degree of IP2X or IPXXB at least 4 at the beginning of the electrical supply cable mus...

Страница 24: ...is higher than the available pressure with the pump s maximum flow capacity If this difference is lower it means that the water flow capacity is higher than the maximum value allowed In order not to damage the pump it is necessary to increase the pressure drop of the hydraulic circuit by for example partially closing a pump discharge cock 14 Models with centrifugal fans Check that the output of th...

Страница 25: ...22 MAINTENANCE AND OPERATING MANUAL Chapter 6 Start up The data inside this manual are not binding and they can be modified by the manufacturer without notice All rights reserved TAEevo015 351 ...

Страница 26: ...g icons ICON MEANING ICON MEANING Celsius degrees If displayed Low pressure alarm Fahrenheit degrees If not displayed Antifreeze resistance Bar Psi D Pump on Compressor 1 Flow meter alarm Compressor 2 Time to defrost starting P Stand by unit B Fans on General alarm Indication for Function Menu entering High pressure alarm BUTTON FUNCTION It selects water temperature and ambient air temperatures in...

Страница 27: ...nual defrosting cycle function not present LED LED STATUS MEANING LED LED STATUS MEANING 4 Not enabled 5 Not enabled Steady Unit on in chiller modality 5 Not enabled 5 Flashing Programming phase if flashes together with led Clock adjustment 5 Not enabled BUTTON FUNCTION 0 It allows to enter Function Menu 2 If pressed for 5 sec it allows to display or modify the set point During programming phase i...

Страница 28: ...ashing in the top of the display appears ALL the first group of parameters 2 Select the various groups using and buttons 3 After selecting a group press button if the selected group is part of the selected menu or any parameter of this group has been moved in this menu in the bottom of the display it appears the Label and the code of the group s first parameter present in Pr1 its value appears in ...

Страница 29: ...Parameter CF42 CF44 0 In the bottom part of the display it appears the probe BEWOT Parameter CF42 CF44 1 In the bottom part of the display it appears the probe BTWOT Parameter CF42 CF44 2 In the bottom part of the display it appears the probe PCP1 Parameter CF42 CF44 3 In the bottom part of the display it appears the probe BAT1 Parameter CF42 CF44 4 In the bottom part of the display it appears the...

Страница 30: ...e display it appears the Label rSt it the alarm can not be reset it appears the Label NO 5 Use or button to scroll all the alarms 6 When the Label rSt is displayed press to reset the alarm and go to the following one 7 To exit press button or wait for time out 30 seconds 7 12 5 How to display the alarm historic ALoG 1 Press button to enter Function menu 2 Use or button to select the function ALoG ...

Страница 31: ... exit programming procedure 7 1 4 C o m p r e s s o r s u n l o a d i n g f u n c t i o n This procedure is necessary when sudden peaks in cooling demand occur for instance if the machine is restarted after a long period of inactivity Under these conditions the evaporator inlet water temperature might be so high as to require a cooling delivery in excess of system capacity The consequent system ov...

Страница 32: ...increases and exceeds the pressure switch tripping value it will restart It will be possible to start up the unit again following the alarm reset procedure described in Chapter 7 Electronic Board If the cause of the pressure switch tripping has not removed this cycle will repeat continuously 2 high pressure switch HP This monitors the refrigerant compressor discharge pressure and prevents it incre...

Страница 33: ...shed with a pressure transducer positioned on the refrigerant compressor outlet pipeline It commutates the measured pressure value into an electric signal sent to the speed regulator For example if the temperature of the air sent to the condenser decreases the pressure transducer will measure a decreasing of the condensing pressure This pressure decreasing is sent to the speed regulator which will...

Страница 34: ...bration to be performed only on instruction by the MTA Service Centre NOTE If the electrical resistance of the liquid is outside the maximum range of the control device green LED 3 will flash rapidly for 2 seconds while amber LED 2 remains off thus signalling a teach in error ATTENTION The level sensor has been calibrated by MTA to operate at maximum sensitivity admissible on the instrument 220kOh...

Страница 35: ...MAINTENANCE AND OPERATING MANUAL Chapter 8 Other components setting The data inside this manual are not binding and they can be modified by the manufacturer without notice All rights reserved TAEevo015 351 ...

Страница 36: ...t be removed the unit must be switched off and disconnected from power supply To access the components of the refrigerant circuit use an appropriate key furnished with the unit and operate on the closing bolts of the front panel A The access to the evaporator and to the components of the hydraulic circuit can be carried out by unscrewing by a screwdriver the screws fixing the panel B To access the...

Страница 37: ...mp stopped if present is at least 0 5 bar with the circuit closed x In units with hydraulic group check that the difference between the discharge and the suction pressure of the pump measured on the manometer with the pump stopped is within expected limits and in particular that it is not lower than the value corresponding to the maximum flow capacity x Clean the water filter We recommend to clean...

Страница 38: ...et temperature BTWOT see A1 1 with pump installed on the machine pressure difference read on the machine pressure gauge too low with pump stopped and pump running possible tripping of pump thermal protection Reduce water flow to within the preset limits for example by closing partially a pump outlet cock Reset the pump thermal protection and check the electrical absorption B2 See point C B2 1 See ...

Страница 39: ...t again chapter Electronic Board D5 See A4 D5 1 See D1 1 Clean the front surface of the condenser Follow the alarm reset procedure to star up the unit again chapter Electronic Board D6 Thermal load too high D6 1 Water outlet temperature too high refrigerant compressor stops main alarm relay tripped If possible reduce the thermal load to within the design limits Follow the alarm reset procedure to ...

Страница 40: ...roblem the compressor stops and restarts main alarm relay tripped Increase the water flow J Alarm displayed A08 pump thermal protection J1 The pump s thermal protection device has tripped because the water flow is too high J1 1 See problem main alarm relay tripped the refrigerant compressor and pump stop the indication A08 appears on the display alternated to BTWOT value the pressure difference re...

Страница 41: ...38 MAINTENANCE AND OPERATING MANUAL Chapter 10 Trouble shooting The data inside this manual are not binding and they can be modified by the manufacturer without notice All rights reserved TAEevo015 351 ...

Страница 42: ...nd Chapter 7 How to modify a parameter s value 11 1 1 Thermoregulation parameters 11 1 2 Configuration parameters Parameter Level Description Min Max Udm Resolution Factory setting ST01 U Summer set point ST05 ST06 C F C F Dec Int 9 C with 1 compr 48 F with 1compr 8 C with 2 compr 47 F with 2compr ST02 U Summer differential 00 0 00 0 25 0 45 0 C F C F Dec Int 4 C with 1 compr 7 F with 1 compr 2 C ...

Страница 43: ...999 Parameter Level Description Min Max Udm Resolution Factory setting Pr2 Password 0 999 Parameter Level Description Min Max Udm Resolution Factory setting Pr2 Password 0 999 Parameter Level Description Min Max Udm Resolution Factory setting EVAPORATOR UNLOADING CONDENSER UNLOADING Pr2 Password 000 999 Parameter Level Description Min Max Udm Resolution Factory setting HOT START Pr2 Password 000 9...

Страница 44: ...l protection Digital input enabled open collector outlet alarm relay is activated The buzzer is activated The icon for general alarm flashes The alarm code is displayed Manual Digital input disabled and the resetting procedure is carried out A02 Low pressure switch alarm Digital input low pressure switch enabled open collector outlet alarm relay is activated The buzzer is activated The icon for lo...

Страница 45: ...icon for general alarm flashes The alarm code is displayed Manual Digital input disabled and the resetting procedure is carried out A10 Compressor 2 thermal alarm Digital input enabled open collector outlet alarm relay is activated The buzzer is activated The icon for general alarm flashes The alarm code is displayed Manual Digital input disabled and the resetting procedure is carried out A09 A10 ...

Страница 46: ...valve not configured open collector outlet alarm relay is activated The buzzer is activated The icon for general alarm flashes The alarm code is displayed Automatic With correct re programming ACF3 Configuration alarm Two digital inputs with the same configuration open collector outlet alarm relay is activated The buzzer is activated The icon for general alarm flashes The alarm code is displayed A...

Страница 47: ...s Yes Yes A05 High temperature High pressure Yes Yes A06 Low pressure Low temperature Yes Yes A07 Analogue input antifreeze Yes Yes A07 Digital input antifreeze Yes Yes A07 Motorcondensing antifreeze Yes Yes A08 Flow meter pump thermal protection Yes Yes Boiler Res Yes Yes A09 Compressor 1 thermal protection Yes A10 Compressor 2 thermal protection Yes A09 A10 Compressor 1 2 thermal protection Yes ...

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