Shini SIC-A Manual
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Shini SIC-A Manual

Air-cooled water chillers
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SIC-A
Air-cooled Water Chillers
Date: Mar., 2022
Version: Ver.C (English)

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Summary of Contents for Shini SIC-A

  • Page 1 SIC-A Air-cooled Water Chillers Date: Mar., 2022 Version: Ver.C (English)

  • Page 3: Table Of Contents

    Contents 1. General Description ..................6 1.1 Coding Principle ..................7 1.2 Features ....................7 1.3 Technical Specifications ................. 9 1.3.1 External Dimensions ..............9 1.3.2 Specification List................. 10 1.4 Safety Regulations ................12 1.4.1 Security Labels ................12 1.5 Exemption Clause ................. 13 2.
  • Page 4 4. Application and Operation ................25 4.1 Panel Diagram ..................25 4.2 Common Screens ................. 25 4.3 Quick Operation ..................26 4.4 Startup ....................27 4.5 Shutdown ....................27 4.6 User Menu .................... 28 4.6.1 Parameter Operation ..............28 4.6.2 User Setting ................28 4.6.3 Machine Set ................
  • Page 5 Table 6-1：SIC-A Series Filling Quantity ............36 Picture Index Picture 1-1: Outline Dimensional Drawing ............9 Picture 2-1：Working Principle Diagram ............14 Picture 2-2：Compressor .................. 16 Picture 2-3：Condenser ..................16 Picture 2-4：Drying Filter .................. 17 Picture 2-5：Thermal Expansion Valve ............. 17 Picture 2-6：Evaporator ..................

  • Page 6: General Description

    Please read through this operation manual before using and installation to avoid damage of the machine and personal injuries. SIC-A series air-cooled chiller adopts single-stage vapour compressed circuit, with compressor overload protection, pump overload protection, phase reverse alarm, anti-freezing protection, high & low pressure protector, which features stable performance and long service life.

  • Page 7: Coding Principle

    ±0.1℃.  All adopt branded compressors with low noise, high efficiency and long service life.  SIC-A adopts fin style condenser design without any need of cooling water for excellent heat transfer and rapid cooling. Accessory option  Medium and high pressure pumps are optional to meet different water pressure requirements.
  • Page 8 Chapter 7, which contains service instructions intended for service engineers. Other chapters contain instructions for the daily operator. Any modifications of the machine must be approved by SHINI in order to avoid personal injury and damage to machine. We shall not be liable for any damage caused by unauthorized change of the machine.

  • Page 9: Technical Specifications

    1.3 Technical Specifications 1.3.1 External Dimensions Picture 1-1: Outline Dimensional Drawing Table 1-1: Specifications (inch) (inch) (inch) (inch) (inch) Water Weight Model Chilled Chilled Water Water (mm) (mm) (mm) (mm) (mm) (mm) Tank (kg) Water Water Tank Tank Refill Inlet Outlet Outfall Overfall...

  • Page 10: Specification List

    1.3.2 Specification List Table 1-2: Specifications List (1) Model Item/ SIC-3A SIC-5A SIC-8A SIC-10A SIC-12.5A SIC-15A Parameters Refrigerant 7.35 12.5 19.5 Capacity Kcal/hr 6,321 10,750 16,770 22,360 25,800 32,680 Power(50H 2.55/ 3.96/ 6.11/ 8.06/ 9.11/ 11.8/ Compressor z/60Hz) 12.5 Weight (kg) Refrigerant Control Mode Thermostatic expansion valve...
  • Page 11 Table 1-3: Specifications List (2) Model Item/ SIC-20A SIC-25A SIC-30A SIC-40A SIC-45A SIC-50A Parameters Refrigerant Capacity Kcal/hr 44,720 51,600 65,360 87,720 98,040 103,200 output 16.12 19.94 23.6 26.28 35.4 36.44 Compressor power (Hz) Weight (kg) Refrigerant Control Mode Thermostatic expansion valve Type Evaporator Type...

  • Page 12: Safety Regulations

    Safety Regulations Operation should be carried out according to the safety regulations this manual to avoid damage of the machine and personal injuries. Abide by the following regulations during operation. 1.4.1 Security Labels Attention! Installation of the device is allowed only to the professional electrician. Before maintaining and repairing the device, be sure to turn off the main switch and control switch.

  • Page 13: Exemption Clause

    Shini (including employees and agents). Shini is exempted from liability for any costs, fees, claims and losses caused by reasons below: 1. Any careless or man-made installations, operation and maintenances upon machines without referring to the Manual prior to machine using.

  • Page 14: Structural Features And Working Principle

    2. Structural Features and Working Principle 2.1 Main Functions SIC-A air-cooled water chillers include consists of four main components, which are compressor, condenser, thermostatic expansion valve, and evaporator. The system adopts single-stage vapour compressed refrigeration system, which uses refrigerant gas-liquid conversion to absorb and release heat, thus achieving the cooling effect.
  • Page 15 refrigerant from the condenser flows through the fluid reservoir r4 to the filter 5 after drying, which finally reaches the expansion valve 8 via the liquid pipe solenoid valve 6 and refrigerant indicator 7 by drying and impurity filtering. In the F-G process, the temperature of high pressure liquid refrigerant decreases after thermal expansion valve throttling and depressurizing.

  • Page 16: Main Components And Functions

    2.2 Main Components and Functions 2.2.1 Compressor 1) It compresses and conveys the refrigerant vapor that results in low and middle of the evaporator, and middle and high pressure of the refrigerantor, which is the core part of whole system. 2) Our company produces scroll and piston compressors.

  • Page 17: Thermal Expansion Valve

    3) It is mounted in front of the thermal expansion valve to protect the valve’s tightness Picture 2-4：Drying Filter 2.2.4 Thermal Expansion Valve 1) The thermostatic expansion valve can throttle and depressurize the refrigerant and regulate the refrigerant flow into the evaporator. 2) The heat expansion valve is installed in front of the evaporator.

  • Page 18: Fluid Reservoir

    1) The high and low pressure controller is used to control the working pressure at the compressor air inlet and outlet. 2) The high-pressure controller is set to 25bar, and the low-pressure controller is set to 2bar. 3) It will give the alarm when the compressor outlet air pressure is higher than 25bar, or the compressor suction port is lower than 2bar, Picture 2-7：High and Low Pressure Controller 2.2.7 Fluid Reservoir...

  • Page 19: Options

    Options 2.3.1 Refrigerant Indicator Picture 2-9：Refrigerant Indicator 1) The refrigerant indicator is used to detect whether the refrigerant is filled appropriately. 2) The refrigerant indicator is used to detect the water ratio of the system. 2.3.2 Liquid Pipe Solenoid Valve Picture 2-10：Liquid Pipe Solenoid Valve Cut off the refrigerant supply circuit immediately after shutdown to prevent the evaporator from freezing.

  • Page 20: Flow Switch

    2.3.4 Flow Switch Picture 2-12：Flow Switch The flow switch is adopted to avoid system damage caused by the cold water circulation failure of the water chiller. 2.3.5 Liquid Level Indicator Picture 2-13：Liquid Level Indicator With the liquid level indicator, it can check whether the water level in the tank is in normal range.

  • Page 21: Main Electrical Components

    2.4 Main Electrical Components 2.4.1 Thermal Overload Relay When delivers the machine, the thermal relay is set to the manual reset mode. So when the system indicates motor overload fault, please troubleshoot first. Then, it must open the door of the control box, and press the reset button of the thermal relay (If it can't be pressed, please wait about 1 min.

  • Page 22: Installation And Debugging

    3. Installation and Debugging Attention！ Please read through this chapter carefully before installation, and install according to the following order! The air-cooled water chiller needs a good cooling environment, so install the water chiller near the window with good air ventilation. If installing the water chiller in the workshop, the ambient temperature should not exceed 35℃.
  • Page 23 according to the assembly drawing). Large diameter water pipe shall be used to connect cooling water during long distance transmission. 11) The water discharge valve must be installed at the lowest part of the chilled water circulation system. 12) When the water source quality is poor, and the embient environment of the cooling tower is harsh, the cooling water and chilled water loop must be equipped with the filters and cleaned regularly.

  • Page 24: Installation Diagram

    12. Oil Cooling Picture 3-1： Machine Installation Location 3.3 Power Connection The SIC-A series must be connected with the power of 3Φ 400V 50Hz and earth wire. Attention! Before power connection, please make sure that the main power switch is...

  • Page 25: Application And Operation

    Application and Operation 4.1 Panel Diagram 4.2 Common Screens Commonly used screens include the main screen and the alarm screen. Commonly used screens include the main screen and the alarm screen. 1. Main Screen The system will enter the main screen after countdown, which displays as The system will enter the main screen after countdown, which displays as follows: 2.

  • Page 26: Quick Operation

    4.3 Quick Operation 1. Changing and Setting Temperature If the user parameter [Lock Temp.] is set to "No", the setting temperature can be modified directly in the main screen, with operation details as follows: Note: the setting temperature can also be modified in the user parameters. 2.

  • Page 27: Startup

    The compressor can't be started frequently because of its characteristics (Frequent start will shorten its service life.). If emergency shut-down happens, the compressor will run again 3 minutes later. Startup 1) Open the main power switch. 2) Set the temperature of chilling water (if the temp. has already been set, omit this step).

  • Page 28: User Menu

    4.6 User Menu Press the button on the main screen to enter the User Menu, which includes five items as the table below: Menu Item Funtion Remark User Setting To set the user parameters To display the current operating Unit Status status of the unit Allowing the query of the last 10 Fault Record...

  • Page 29: Machine Set

    4.6.3 Machine Set The machine set includes six items as the table below: Item Function Remark Language To set the display language. Chinese and English Backlight Time Setting range：0~255min 0: backlight is not turned off. Compr Use To query the cumulative operation time of Time the compressor To set baud rate, parity bit, stop bit and...

  • Page 30: Trouble-Shooting

    Trouble-shooting Table 5-1: Single Compressor Fault Test Conditions Troubleshooting Solution Compressor Test when the compressor pressure High button has pressed If the [LP Check Delay] is 0, test Stop compressor only when the compressor button Check if the input is consistent with Compressor pressure without affect other has pressed;If the...
  • Page 31 Table 5-2: Double Compressor Fault Test Conditions Troubleshooting Solution Compressor 1 Test when the compressor pressure high button has pressed If the [LP Check Delay] is 0, test Stop compressor 1 when the compressor button has Compressor 1 only without affect Check if the input is consistent pressed;If the pressure low...
  • Page 32 Table 5-3: Triple,Quadruple Compressor Fault Test Conditions Troubleshooting Solution Compressor 1 Test when the compressor button has pressure high pressed If the [LP Check Delay] is 0, test when the Stop compressor 1 only without Compressor 1 compressor button has pressed;If the Check if the input is consistent affect other equipments to pressure low...
  • Page 33 Fault Test Conditions Troubleshooting Solution Blower 1 fault Check if the blower 1 fault input (Only applicable Compressor 1 runs the test input is consistent with the switch for air-cooled setting. series) Blower 2 fault Check if the blower 2 fault input (Only applicable Compressor 2 runs the test input is consistent with the switch...

  • Page 34: Repair And Maintenance

    6. Repair and Maintenance 34(40)
  • Page 35 Attention! All repair work should be done by qualified personnel only to avoid damage to the machine or personnel injury. In order to operate the machine rightly and safely, please caution the matter follows: 1) Don’t turn off the main power switch to stop the machine, except emergency situation.

  • Page 36: Filling The Refrigerant

    13~15bar; and the display pressure of the low-pressure gauge is about: 3～5bar(Note: the ambient temperature is 30 ℃, and the ice water temperature is about 12 ℃). Picture 6-2：Fill in the Refrigerant (2) Table 6-1：SIC-A Series Filling Quantity Model Refrigerant (kg) Model...

  • Page 37: Components Maintenance

    6.2 Components Maintenance 6.2.1 Condenser The air-cooled tube-fin style condenser of the SIC-A series is installed in an open way. In the use process, it will inevitably adhere to dust and sundries, which reduces the heat exchange rate. The condenser should be cleaned regularly so that the machine can run stably.
  • Page 38 Attention! Drain the water inside the evaporator and the condenser away when the ℃ If the evaporator freezes, drain the water machine stop running under 0 . in it before restarting. Picture 6-3：Water Drainage Port 38(40)

  • Page 39: Maintenance Schedule

    6.3 Maintenance Schedule About the Machine 6.3.1 Model Production date Ф Voltage Frequency Total power 6.3.2 Check after Installation Check the pipes are all correctly connected. Check if there are leakages in the piping system. Check if there are breaks in welding joint. Electrical Installation Voltage: Fuse specification: 1 Phase...

  • Page 40: Trimonthly Checking

    Check whether there is scale formation in tank. 6.3.6 Trimonthly Checking Check whether condenser is under blockage. 6.3.7 Half-yearly Checking Check and clean the condenser and evaporator. Check and clean the filter and expansion valve. Check system performance. Clean condenser. 6.3.8 Yearly Checking Check whether the contactor is normal.

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