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Summary of Contents for TICA PRO TWSD-AC Series
- Page 1 CONDENSERLESS CHILLER TWSD-AC Series TICA Climate Solutions...
- Page 2 Contents Safety Precautions ......................1 1 Cooling System and Its Installation and Maintenance ..........3 1.1 Overview........................ 3 1.2 Nomenclature ......................3 1.3 Unit Lifting Diagram and Maintenance Space ............3 1.4 Installation of the Unit ..................... 4 1.5 Requirements for External Piping of External Condenser ........8 1.6 Installation of Differential Pressure Switch ............
- Page 3 Be sure to make a base before installing the unit to ensure stable operation of the unit. Use the accessories specified by TICA and ask specialized institutions such as the manufacturer or authorized distributor to provide installation and technical services.
- Page 4 3. Operation Notes Caution Do not use water to flush the unit directly; otherwise electric shock or other accidents are easily caused. Be sure that the quality of water entering into the heat exchanger has met the requirements. Do not turn on/off the unit frequently; otherwise the unit may be damaged due to frequent startup.
- Page 5 1 Cooling System and Its Installation and Maintenance 1.1 Overview TICA TWSD series condenserless chillers with clear appearance adopt the advanced semi-hermetic double screw compressor, the efficient tube condenser and flooded evaporator, as well as the cutting-edge microcomputer control technology contribute to the stable system that features higher reliability and energy-saving operation.
- Page 6 Before installation, check whether the local voltage and frequency of power supply are suitable for the unit; TICA shall not be liable for any...
- Page 7 damage caused after the unit is accepted. Unit lifting When lifting, it has to tighten the lifting hole on the unit by sufficient load-bearing ropes or chains, and must follow the instructions listed on unit lifting diagram, so as to protect the control cabinet and other parts of the unit from damages.
- Page 8 Table 1 Water quality requirements Trend Reference Item Value Corrosion Fouling pH (25°C) 6.5~8.0 μS/cm Conductivity (25°C) < 800 Chloridion Cl mg(Cl < 200 Reference Sulfate ion SO mg(SO < 200 Items Acid consumption mg(CaCO < 100 (pH=4.8) Full hardness mg(CaCO <...
- Page 9 If the unit needs to be restarted after long-term shutdown, the water system pipeline needs to be cleaned. Caution TICA shall not be responsible for any damage to the unit caused by the use of untreated or improperly treated water, seawater or saline water.
- Page 10 Check valve must be installed at the water inlet and outlet for the Pipe installation convenience of regular maintenance of water system. It is suggested that thermometer and pressure gauge should be installed at the heat exchanger inlet and outlet for the convenience of regular check and maintenance;...
- Page 11 The configuration quality of intermediate pipeline has a significant influence on the safety and efficiency of the refrigeration system. TICA's suggestions are as follows: There should be no liquid trap in the air discharge pipeline from the compressor to the external condenser, and the horizontal pipeline should slope towards the external condenser at a slope gradient of 2%.
- Page 12 Figure 4 Figure 5 If a compressor is connected with multiple external condensers, or the refrigerant circuits (≥ 2) of a single external condenser are connected in parallel, the liquid outlet pipes of external condensers generally aggregate into one main pipe and enter the cylinder.
- Page 13 In this case, a balance pipe interface must be reserved for the main inlet pipe. For the interface size, consult TICA sales engineers. The liquid supply pipeline is provided with a 100-mesh filter, which is installed before the inlet pipeline of the high-pressure receiver.
- Page 14 The connecting pipe of the external safety valve should meet the following requirements: The inner diameter of the discharge pipe should be no less than the diameter of the safety valve. The discharge pipe should be equipped with waterproof bend. The discharge pipe should be led out of the equipment room and away from the air inlet in the equipment room.
- Page 15 each branch circuit can meet the rated water flow requirement. There should be some union joints, flanged joints and access shut-off valves in the pipeline for future maintenance. For all the high points where air may accumulate in the water pipeline, the automatic or manual air discharge valve should be installed.
- Page 16 water in the whole system. 9. Pipes and connectors should be supported independently so as not to exert pressure on the unit. It is suggested to install elastic connectors to reduce shocks to the pipelines. 10. Foreign matters in the water system would result in the fouling of the heat exchanger. Therefore, the filter of at least 60-mesh should be installed in front of the pump.
- Page 17 heat exchanger. The two pressure measurement openings need to be connected by rubber tubes, which should be placed away from positions prone to damages. For the installation diagram, refer to Figure 7. If the chiller is installed outdoors, the differential pressure switch should be installed slightly above the water inlet of the heat exchanger for the heat exchanger (cooling-only unit), so that the water on the differential pressure switch side can be drained.
- Page 18 3. Choose a rubber tube with an appropriate length and a diameter of 6 mm, and cover the 1/4" nuts on both ends of the tube. 4. Screw the tube with sockets and nuts into the "-" end of the water differential flow switch, and screw the other end of the tube into the pressure measurement opening of the water outlet pipe in the same way;...
- Page 19 check whether the "+" end and the "-" end of the differential flow switch are connected correctly and the air in the pipes is exhausted. 3. When multiple chillers are connected in parallel, it is necessary to ensure that there are no shut-off devices such as a valve between the pressure measurement opening of the differential pressure switch and the water inlet and outlet of the heat exchanger.
- Page 20 9. Energy saving tank: used to adjust energy to reduce the load changes of the air-conditioning system when the compressor opens and stops frequently, so as to improve the system efficiency and extend the service life of the unit. The capacity can be calculated based on the following formula: The capacity can be calculated based on the following formula: The volume V (m...
- Page 21 During pressure test, the check valve between the user's waterway system and the unit's evaporator and condenser must be closed to isolate the waterway from the evaporator and condenser. Otherwise, the water chamber of the vessel may be damaged by high pressure. Water pressure test should not be carried out at temperature of below 5°C, and if the pressure test with a pressure gauge is qualified, the accuracy is not less than level 1.5, and the full scale value is 1.5 to 2 times the maximum measured pressure.
- Page 22 operation of the unit. Make sure that all wires and fuses have the appropriate specifications to match the unit's operation and complete all chain control lines according to the relevant electronic control drawings. Make sure that all air-conditioning ancillary equipment and control devices are operating properly and that the first running of the unit owns enough cooling capacity to meet the unit operating requirements.
- Page 23 Table 2 for related check items. The unit is equipped with safety protection devices to ensure safe Safety devices operation. When a safety device is operating, if the fault indicator light is on, this part of the function will stop, but the rest still performs normally.
- Page 24 Table 3 Unit safety devices Safety Device Cause of Action 1. The valve of fluorine system is off 2. The fan air flow of the external condenser is insufficient High pressure protection 3. The external condenser is blocked 4. There is non-condensable gas in the system 1.
- Page 25 If the unit stops due to failures, the operator should promptly deal with them. For failures that cannot be resolved, please immediately contact TICA service personnel, and do not force a continuous boot in case of failures, or it may damage the unit.
- Page 26 between 12°C and 25°C. 1.9.4 Water system In some areas, due to hard water will make the condenser scaling, result in condensate pressure too high or the heat transfer effect of the evaporator poor, and lead to shutdown due to failures or the unit operates uneconomically, water quality inspection has to be carried out before the air conditioner goes into the vessel.
- Page 27 1.9.4.2 Cleaning of condenser and flow unit Check and clean the condensation tube after the first quarter of unit operation. The water loop system of the condenser is usually an open system (open to the air at the cooling tower) so that the condensation tubes are more susceptible to scaling.
- Page 28 4. Cleaning tools should avoid scratching the heat exchange tubes. Do not use line brushes. 5. After each disassembly, inspection or cleaning of the water chamber, the water chamber gasket should be replaced. 1.9.5 Recommended maintenance cycle for unit First Later Maintenance Maintenance...
- Page 29 Operate the compressor overloaded compressor is too high with the checking current. Do not exceed 1.25 RL. Please contact TICA services. a) Motor coil failure a) Check the insulation resistance 5. High oil b) Insufficient cooling for the...
- Page 30 6. High a) Check the insulation resistance by shutting off the compressor a) Motor coil failure compressor switch and then opening it. temperature a) Insufficient liquid supply for a) Check the superheat degree of the expansion the evaporator valve b) Insufficient refrigerant filling b) Fill refrigerant into the system quantity c) Check the evaporating temperature of the...
- Page 31 2 Electromechanical Installation and Control System Maintenance 2.1 Control System Controller The advanced single-chip microcomputer implements automatic monitoring for the unit's entire operating process,such as on/off,operating status monitoring,failure monitoring and processing.When the controller is faulty,an alarm will be sent and the unit will automatically stop for not being damaged.At the same time,the controller will display the failure code.The controller has less components,easy to maintain.
- Page 32 Safe and Easy to Manage The control system uses password setting to ensure the unit's safety and performance.You can set different permissions to different persons as necessary,without worrying about abnormality or damage of the unit caused by unauthorized operation by the operator or unrelated personnel.In other words,the unit you are using is safe and easy to manage.
- Page 33 Other This unit also uses a phase protector to prevent reverse phase,phase loss,over voltage,and undervoltage,so as to effectively prevent the motor from reversal and phase loss operation. 2.3 Electrical Control and Operation Instructions Initial Interface This manual takes the single compressor as an example to explain the operation methods on the human-machine interface of TWSD series of condenserless chillers.The above picture shows the initial operation interface.Users can simply press the English button to access the user operation interface.
- Page 34 Main Control This interface displays the main option menu of the user interface. You can choose from the following options: Basic Operation: mainly used by the operator to switch on and off the unit, set basic parameters, and query basic data. Running Parameter: used by the operation engineer.
- Page 35 This function is not available to common users. Click the【Basic Operation】button on the main operation display screen of the unit to enter the user's basic operation screen: Basic Operation Power supply status: Normal, Abnormal. Evaporator water flow status: Normal, Disconnected. ...
- Page 36 Press the Down button to enter the parameter display page of the basic operation window of the user: Compressor running parameters: Suction pressure, discharge pressure, discharge temperature, standby time, compressor status, running time, startup times, running capacity, suction superheat degree, discharge superheat degree.
- Page 37 Press the Down button to access the screen for setting the water temperature in the basic operation window of the user: Temperature setting: In the cooling mode, the water outlet temperature of the evaporator is used as the control temperature of the unit. In this case, the control water temperature in the cooling mode can be set.
- Page 38 Press the【Timer】button to enter the timed power on/off setting screen: This screen is the timed on/off function provided by the unit, which can be set to four groups of timed on/off. To enable this function, the【Disable】button needs to be set to【Enable】.
- Page 39 Click the 【Current Alarm】 button under the main operation display screen of the unit to enter the user alarm query screen: Current Alarm When there is an alarm, you can check the alarm message. After alarm acknowledgment and processing, press the Reset at the bottom to reset the alarm.
- Page 40 Click 【 Communication Settings 】 button under the main control screen to enter the communication function setting screen: Communication Settings If the user configures the optional Modbus communication function, the user can set the communication parameters, set the Modbus slave station address of the unit, and set the baud rate and parity of the communication port.
- Page 41 The air switch and AC contactor in the control box must be maintained at least once a year. Make sure to tighten the bolts and clear the dust. For single-chip microcomputer and touch screen, you can only check whether the external wiring is reliable.
- Page 42 Make sure the wiring design is correct, and try to avoid outside interference and damage; or take proper protective measures. Install the product based on its performance feature and requirements of head processing and middle connection. Keep the wires and cables away from source of heat, do not move them if possible, and avoid sharp bending, and twisting.
- Page 43 B. The single-chip microcomputer is off. 6. Fault symptom: "Compressor over current" is displayed. Troubleshooting: Check whether the thermal relay is started, if it is, then check whether the set value is correct. If the set value is correct, check whether the thermal relay itself is damaged.
- Page 44 2.6 Wire Specifications Main power inlet wire Chiller Model (3 * ### + 2 * ### ) mm TWSD-AC1 0037.1 One group( 3*50+2*25)mm Warning: Unauthorized change of wiring and layout structure in the electric control box may cause the equipment to fail to operate normally.
- Page 45 Table 1 Physical Property of Ethylene Glycol Solution Operating Mass Specific Heat Thermal Dynamic Freezing Density Temperature Concentration Capacity Conductivity Viscosity Point ％ ℃ ℃ kg/m kJ/（kg*K） W/（m*K） Pa*s 1035 3.769 0.468 3.02 -7.8 1042 3.707 0.451 4.07 -10.7 1048 3.628 0.433 4.61...
- Page 46 Table 2 Appendix Maintenance (Repair) Record Table Troubleshooting Description Result Recorder Date Measures...
- Page 47 The service life is specified by TICA. The environmental protection service life is not equivalent to the service life of safe use.
- Page 48 assembly Discharge temperature ○ ○ ○ ○ ○ × controller Selector switch ○ ○ ○ ○ ○ × Selector switch ○ ○ ○ ○ ○ × contact Insulator nut ○ ○ ○ ○ × × ○ ○ ○ ○ ○ Pilot lamp ×...
- Page 49 Tel.: +7 (495) 822-29-00 www.tica.ru E-mail: info@tica.ru ____________________________________ The copyright of this manual belongs to Nanjing TICA Climate Solutions. Anyone without consent or authorization shall not copy, reproduce or extract this manual without permission. TICA reserves the right to sue.
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