Shini SIC-A Series User manual

SIC-A
Air-cooled Water Chillers
Date: May, 2021
Version: Ver.B (English)

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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. Structural Features and Working Principle.................................................14
2.1 Main Functions......................................................................................14
2.1.1 Working Principle........................................................................14
2.2 Main Components and Functions .........................................................16
2.2.1 Compressor................................................................................16
2.2.2 Condenser..................................................................................16
2.2.3 Drying Filter................................................................................16
2.2.4 Thermal Expansion Valve...........................................................17
2.2.5 Evaporator..................................................................................17
2.2.6 High and Low Pressure Controller..............................................17
2.2.7 Fluid Reservoir ...........................................................................18
2.3 Options .................................................................................................19
2.3.1 Refrigerant Indicator...................................................................19
2.3.2 Liquid Pipe Solenoid Valve.........................................................19
2.3.3 Hot-gas By-pass Valve...............................................................19
2.3.4 Flow Switch ................................................................................20
2.3.5 Liquid Level Indicator..................................................................20
2.4 Main Electrical Components.................................................................21
2.4.1 Thermal Overload Relay.............................................................21
3. Installation and Debugging........................................................................... 22
3.1 Installation Notices................................................................................22
3.2 Installation Diagram..............................................................................24
3.3 Power Connection.................................................................................24

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4. Application and Operation............................................................................25
4.1 Panel Description..................................................................................25
4.2 Machine Startup....................................................................................28
4.3 Machine Shutdown ...............................................................................30
4.4 Temperature Controller 1(Used for 1HP~15HP)...................................30
4.4.1 Temperature setting method ......................................................30
4.4.2 Parameter Value Setting ............................................................31
4.4.3 Parameter setting method..........................................................31
4.4.4 Code Meanings..........................................................................32
4.5 Temperature Controller 2(Used for 20HP-50HP)..................................33
4.5.1 Temperature setting method ......................................................33
4.5.2 Default parameter setting...........................................................34
4.5.3 Parameter setting method..........................................................34
5. Troubleshooting ............................................................................................35
6. Repair and Maintenance ...............................................................................37
6.1 Filling the Refrigerant............................................................................39
6.2 Components Maintenance....................................................................40
6.2.1 Condenser..................................................................................40
6.2.2 Evaporator..................................................................................40
6.3 Maintenance Schedule .........................................................................42
6.3.1 About the Machine......................................................................42
6.3.2 Check after Installation...............................................................42
6.3.3 Daily Checking ...........................................................................42
6.3.4 Weekly Checking........................................................................42
6.3.5 Montly Checking.........................................................................42
6.3.6 Trimonthly Checking...................................................................43
6.3.7 Half-yearly Checking ..................................................................43
6.3.8 Yearly Checking .........................................................................43
6.3.9 3 year Checking .........................................................................43
Table Index
Table 1-1: Specifications..................................................................................... 9

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Table 1-2: Specifications List (1)....................................................................... 10
Table 1-3: Specifications List (2)....................................................................... 10
Table 4-1 Panel Description............................................................................ 25
Table 6-1 SIC-A Series Filling Quantity .......................................................... 39
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.................................................................................... 17
Picture 2-7 High and Low Pressure Controller................................................ 18
Picture 2-8 Fluid Reservoir ............................................................................. 18
Picture 2-9 Refrigerant Indicator..................................................................... 19
Picture 2-10 Liquid Pipe Solenoid Valve......................................................... 19
Picture 2-11 Hot-gas By-pass Valve............................................................... 19
Picture 2-12 Flow Switch ................................................................................ 20
Picture 2-13 Liquid Level Indicator.................................................................. 20
Picture 2-14 Thermal Overlaod Relay............................................................. 21
Picture 3-1 Machine Installation Location...................................................... 24
Picture 4-1: Panel Description........................................................................... 25
Picture 4-2 Stepup Step 1............................................................................... 28
Picture 6-1 Fill in the Refrigerant (1)............................................................... 39
Picture 6-2 Fill in the Refrigerant (2)............................................................... 39
Picture 6-3 Water Drainage Port..................................................................... 41

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1. 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. It can quickly cool down, and maintain stable
temperature to meet the requirements of customers. This series of products work
following the heating and cooling exchange principle, which is an indispensable
device for cooling applications in modern industry.
Model: SIC-7.5A

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1.1 Coding Principle
1.2 Features
Standard configuration
Cooling range 7~25℃.
Stainless steel insulated water tank and evaporator
Anti-freezing protector
Adopt R22 refrigerant, and cooling effect
The refrigeration system adopts high and lower pressure controller for
protection
Low pressure pumps are standard configurations.
Compressor and pump overload relays.
Adopt Italian temperature controller that can maintain the accuracy of
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.
Water tank level sensor is optional to check whether the water level is in
normal condition.
Hot-gas bypass valve is optional that can maintain the temperature control
accuracy up to ±1℃;
The liquid pipe solenoid valve is optional to prevent evaporator freezing by
cutting the refrigerant immediately after downtime.

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Level sensor can be opted to detect the refrigerant and ensure its quality
and water ratio.
Optional flow switches to detect chilled water flow.
All service work should be carried out by a person with technical training or
corresponding professional experience. The manual contains instructions for both
handling and servicing. 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.
Our company provides excellent after-sales service. Should you have any problem
during using the machine, please contact the company or the local vendor.
Headquarter and Taipei factory
Tel: [phone]
Shini Plastics Technologies (Dongguan), Inc
Tel: [phone]
Shini Plastics Technologies India Pvt.Ltd.
Tel: [phone]

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1.3 Technical Specifications
1.3.1 External Dimensions
Picture 1-1: Outline Dimensional Drawing
Table 1-1: Specifications
Model H
(mm)
H1
(mm)
W
(mm)
W1
(mm)
W2
(mm)
D
(mm)
P1
(inch)
Chilled
Water
Inlet
P2
(inch)
Chilled
Water
Outlet
P3
(inch)
Water
Tank
Outfall
P4
(inch)
Water
Tank
Overfall
P5
(inch)
Water
Tank
Refill
Port
Weight
(kg)
SIC-3A 1200 625 685 277 200 1190 1 1 1/2 1/2 1/2 260
SIC-5A 1400 640 735 360 174 1320 1 1 1/2 1/2 1/2 315
SIC-8A 1350 640 735 300 204 1610 11/211/21/2 1/2 1/2 400
SIC-10A 1440 640 735 300 204 1610 11/211/21/2 1/2 1/2 420
SIC-12.5A 1520 648 905 457 189 1780 2 2 1/2 1/2 1/2 520
SIC-15A 1520 648 905 457 189 1780 2 2 1/2 1/2 1/2 560
SIC-20A 1950 700 1200 450 150 2920 2 2 1 1/2 1/2 775
SIC-25A 1950 700 1200 450 150 2920 2 2 1 1/2 1/2 800
SIC-30A 1950 760 1200 430 160 2920 21/221/21 1/2 1/2 840
SIC-40A 1970 780 1300 450 200 3390 21/221/21 1 1 1400
SIC-45A 1970 780 1300 450 200 3800 21/221/21 1 1 1800
SIC-50A 1970 823 1420 700 360 4000 21/221/21 1 1 2000

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1.3.2 Specification List
Table 1-2: Specifications List (1)
Model
Item/
Parameters SIC-3A SIC-5A SIC-8A SIC-10A SIC-12.5A
SIC-15A
Refrigerant
Capacity1) kW 7.35 12.5 19.5 26 30 38
Kcal/hr 6,321 10,750 16,770 22,360 25,800 32,680
Compressor Power(50H
z/60Hz) kW 2.55/ 3.96/ 6.11/ 8.06/ 9.11/ 11.8/
HP 3 5 8 10 12.5 15
Refrigerant Weight (kg) 3.6 4.3 7 8 11 13 Control Mode Thermostatic expansion valve
Type R22
Evaporator Type Tube-in-shell style
Condenser Type Tube-fin style
Blower (kW)
(50Hz/60Hz) 0.18 0.45 0.25×2 0.45×2 0.6×2 0.78×2
Water Tank Capacity (L) 30 85 150
Pump2)
(50Hz)
Power (kW) 0.75/0.75/1.1 1.1 1.1/1.5/2.2
(L/Min) Pump
Flow (L/min) 50/83/67 80/100/89 130/150/133
Working Pressure
(kgf/cm2) 2.0/2.6/3.8 2.0/2.6/3.5 2.0/3/4.2
Total Power (kW) (50Hz/60Hz)(kW)3) 3.48 5.16 7.71 10.06 11.41 14.81
Pipe
Coupling (inch)
Cooling Water
Outlet 1 11/22
Cooling Water
Inlet 1 11/22
Water Tank Outlet 1/2
Water Tank Port 1/2
Protective
Devices
Compressor Overload relay
pump Overload relay
Cooling Water
Circuit High and low pressure switch/anti-freeze switch
Water Circuit Flow switch (optional) / water tank level sensor (optional) / bypass valve
Power(VAC)4）3Φ,400V,AC 50HZ
Measures Exchange 1Kw=860 kcal/hr 1RT=3,024kcal/hr 10,000Btu/hr=2,520kcal/hr
We reserve the right to change
specifications without prior noice.
Note:
1) Refrigeration capacity is measured based on the flow 0.172 m3/ (h.kW) and the outlet temperature (7℃) of
chilled water under the environment temperature of 35℃.
2) Low pressure pump is for domestic and Southeast Asia export, customers can change for medium
pressure pumps (use P for short; e.g.: SIC-5A-P) or high pressure pumps (use HP for short; e.g.:
SIC-5A-HP), specific parameters in turn as shown above.
3) Pump power is included in total power.
4) Special orders of machine voltage can be acceptable according to customers’requests.
Table 1-3: Specifications List (2)

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Model
Item/
Parameters SIC-20A SIC-25A SIC-30A SIC-40A SIC-45A SIC-50A
Refrigerant
Capacity1)1 kW 52 60 76 104 114 120
Kcal/hr 44,720 51,600 65,360 87,720 98,040 103,200
Compressor output power
(Hz)
kW 16.12 19.94 23.6 26.28 35.4 36.44
HP 20 25 30 40 45 50
Refrigerant Weight (kg) 18 22 26 34 42 48 Control Mode Thermostatic expansion valve
Type R22
Evaporator Type Tube-in-shell style
Condenser Type Tube-fin style
Blower power (kW) 0.8×2 1.1×2 1.5×2 1.1×3 1.5×3 1.5×4
Water Tank Capacity (L) 180 200 270 400 650
Water pump
2)
(50Hz)
Power (kW) 2.2/3/4 4/3/4 4/4/5.5
Pump flow (L/Min) 200/300/300 300/300/300 533/366/367
Pump pressure
(kgf/cm2) 2.5/3/4.2 2.7/3.4/4.3
Total Power (kW)3) 19.92 22.62 31.3 39.66 44.95 46.44
Pipe
Coupling
(inch)
Cooling Water
Outlet 2 21/221/2
Cooling Water Inlet 2 21/221/2
Water Tank Outlet 1
Water Tank Port 1/2 1
Protective
Devices
Compressor Overload relay
pump Overload relay
Cooling Water
Circuit High and low pressure switch/anti-freeze switch
Water Circuit Flow switch (optional) / water tank level sensor (optional) / bypass valve
Power(VAC)4）3Φ,400V,AC 50HZ
Measures Exchange Kw=860 kcal/hr 1RT=3,024kcal/hr 10,000Btu/hr=2,520kcal/hr
We reserve the right to change
specifications without prior noice.
Note:
1) Refrigeration capacity is measured based on the flow 0.172 m3/ (h.kW) and the outlet temperature (7℃) of
chilled water under the environment temperature of 30℃.
2) Low pressure pump is for domestic and Southeast Asia export, customers can change for medium
pressure pumps (use P for short; e.g.: SIC-5A-P) or high pressure pumps (use HP for short; e.g.:
SIC-5A-HP), specific parameters in turn as shown above.
3) Pump power is included in total power.
4) Special orders of machine voltage can be acceptable according to customers’requests.

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1.4 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.
Warning!
High Voltage!
This label is posted on enclosure of the electrical control cabinet!
Warning!
Be careful!
Pay more attentions at the places where this sign is attached!
Attention!
Drain the water inside when power off at the cold day to avoid freezing!
Attention!
No need for regular inspection because all the electrical parts in the
control unit are fixed tightly!
Please note the correct running direction.
It indicates the pump running ditection, please
confirm.
When the pump reverses, the alarm will sound
and the control panel will display pump reverses.
Please exchange any two power wires
Pump pressure gauge: display actual pressure of
the freezing water system.
High pressure gauge: display the high pressure of
the refrigerant system.

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Low pressure gauge: display the low pressure of
the refrigerant system.
1.5 Exemption Clause
The following statements clarify the responsibilities and regulations born by any
buyer or user who purchases products and accessories from 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.
2. Any incidents beyond human reasonable controls, which include man-made
vicious or deliberate damages or abnormal power, and machine faults caused
by irresistible natural disasters including fire, flood, storm and earthquake.
3. Any operational actions that are not authorized by Shini upon machine,
including adding or replacing accessories, dismantling, delivering or repairing.
4. Employing consumables or oil media that are not appointed by Shini.

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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.
2.1.1 Working Principle
1.Compressor
2.Fan
3.Fin type condenser
4.Fluid Reservoirr
5.Drying fitler
6. Liquid pipe solenoid valve (optional)
7. Refrigerant indicator (optional)
8.Expansion valve
9.Evaporator
10.Anti-freezing switch
11.Flow switch(option)
12.Water tank liquid sensor (option)
13.Temp. sensor
14.Water tank
15.Float ball switch
16.Pump
17.Water-pre. Gauge
18.By-pass valve
19.Sluice valve (for med. and high pressure pump)
20.Hot-gas by pass valve(option)
21.Pressure controller
Picture 2-1 Working Principle Diagram
When the machine is started, compressor (1) starts working. Refrigerant is
compressed into high pressure and high temperature gas in the process from B to
C to enter the condenser 3 to exchange heat with the air, which changes from gas
to liquid and the heat is taken away by the air; In the C-D-E-F process, the liquid

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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. In the G-A process, the low
pressure and low temperature refrigerant exchanges heat with the chilled water
through the evaporator 9, and the temperature of cooling the chilled water reach
the set value; The low temperature gas refrigerant from the evaporator returns to
the compressor, which circulates in this way.
Hot-gas bypass function: when the temperature of chilled water reaches the set
temperature, the compressor continues to work. When the temperature drops to
the set temperature of the hot gas bypass valve, the hot gas bypass valve opens.
Part of the compressed high-temperature and high-pressure refrigerant directly
reaches the evaporator through the hot gas bypass valve, which neutralizes some
refrigerants and returns the compressor (without passing the condenser). The
refrigeration system achieves the balanced load and cooling capacity through the
hot-gas bypass valve, so that the compressor can work all the time while keeping
chilled water temperature accuracy at 1.

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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.
3) The power of common compressors is 25％-30％cooling capacity of the
water chiller.
Picture 2-2 Compressor
2.2.2 Condenser
1) It is the heat output device, which can discharge the heat absorbed by the
refrigerant in the evaporator and the heat converted by the compressor
consumption to the cooling medium.
2) Our company uses the air-cooled condenser (Tube-fin style).
Picture 2-3 Condenser
2.2.3 Drying Filter
1) Drying filter function: Remove the impurities in the refrigerant, and absorb the
free moisture in the refrigerant to prevent ice blocked in the narrow section of
the pipeline (especially at the thermal expansion valve port).
2) The filter size is usually selected according to the refrigerant pipe diameter.
3) It is mounted in front of the thermal expansion valve to protect the valve’s

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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.
Picture 2-5 Thermal Expansion Valve
2.2.5 Evaporator
1) The evaporator is a device that outputs the refrigerant, which absorbs the
heat of the cooled object in the evaporator, so as to achieve the refrigerating
purpose.
2) Our company uses the horizontal shell and tube evaporator.
Picture 2-6 Evaporator
2.2.6 High and Low Pressure Controller
1) The high and low pressure controller is used to control the working pressure

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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
1) It is used to store the liquid refrigerants from the condenser to ensure that the
heat transfer area of the condenser can play a full role.
2) The pipe installed between the condenser and drying filter.
Picture 2-8 Fluid Reservoir

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2.3 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.
2.3.3 Hot-gas By-pass Valve
Picture 2-11 Hot-gas By-pass Valve
It is used for bypass refrigerant gas at low temperature to avoid compressor
frequent start-up for accurate temperature control.

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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.