S&A PRO Series User manual

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CWFL-1000/1500/2000/3000
Industrial Chiller
User Manual

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FOREWORD
Thanks for your purchase of our product. Please read this
manual carefully before using and keep it properly so that you can
refer to it whenever you need information.
This manual is not a quality guarantee. Our company reserves
the right to the interpretation of the correction of misprint and
improperly described information and product improvement. The
revised content will be edited into the reprinted user manual without
prior notice.

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CONTENTS
Notice---------------------------------------------------------------------------------------- 4
I. Overview--------------------------------------------------------------------------------- 7
II. Model Illustration -------------------------------------------------------------------- 7
III. Product Outlines & Parts--------------------------------------------------------- 8
IV. Installation----------------------------------------------------------------------------- 9
V. Operating States &Parameters Adjustment -------------------------------- 12
VI. Alarm & Output Terminal--------------------------------------------------------- 14
VII. Maintenance ------------------------------------------------------------------------- 15
VIII. Simple Troubleshooting -------------------------------------------------------- 16
Attachment –Schematic --------------------------------------------------------------- 17

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Notice
In order to ensure your personal safety and avoid property loss, you must pay attention to
this manual, but not limited to the following warning notices. General electric knowledge
and safety standards should also be followed.
DANGER Failure to take safety measures will result in death or serious
personal injury.
Notice
Operation Guideline
The Operation should be
carried out by professional
technicians
Handling, installation of pipes, electrical, operation,
maintenance, overhaul and other operations must be
carried out by personnel with professional knowledge.
It is forbidden to be used
beyond the range of
specification
It is forbidden to use the equipment beyond the range of
manual specifications in order to avoid equipment
damage, injury, fire, electric shock and other major
accidents.
It is forbidden to be used in
the explosive environment
It cannot be installed in dangerous places with flammable
gas.
Electrical connection
a) The power supply must conform to the standard
indicated in the nameplate or the manual;
b) Use the standard cable, and select the standard wire
diameter;
c) The grounding wire must be installed and the
connection must be reliable; otherwise, it will cause an
electric shock or fire.
It is forbidden to operate the
equipment without a cover
There are live parts inside the machine. It is forbidden to
operate without a cover, as there is a risk of electric shock.
Water-proof
Do not allow the equipment to be drenched or immersed
in water, otherwise there may be a risk of short circuit and
electric shock.
Maintenance and repair
The operation must be carried out after 3 minutes of
cutting off the power supply, because the high-voltage
charging part in the equipment is not discharged within 3
minutes. Working in a live state or working immediately
after shutdown will cause the risk of electric shock.
Danger
High Voltage
Contact with live parts can cause serious personal injury
or death.
Danger
Hot Surface
The human body or the heat-labile articles must keep
away from this high temperature area. Otherwise, it will
cause personal injury or property loss.

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DANGER Failure to take safety measures will result in death or serious
personal injury.
Notice
Operation Guideline
Transport and
installation
The equipment must be firmly fixed during transport and
installation. Otherwise, there will be a danger of tipping or
falling.
Electrical protection
The power cable terminal must be equipped with the electric
leakage and overload protection device according to the rated
current indicated on the equipment nameplate.
Stop running in
abnormal state
When the equipment is abnormal, as long as the cause is not
clear, it is forbidden to start. Otherwise, there is a danger of
damage, electric shock, fire, and injury.
Do not put fingers or
other things into the gap
of the equipment
There are rotating parts inside the device. Do not put fingers
or other things into the gap of the equipment. Otherwise, it will
cause personal injury.
Refrigerant leakage
a) When the refrigerant leaks, please make sure that the
ventilation is available. Otherwise, it may cause anesthesia
and suffocation if a large amount of refrigerant fills the
enclosed space;
b) Avoid contacting with skin, or it will cause frostbite.
DANGER Failure to take safety measures will result in minor personal
injury or property damage.
Notice
Operation Guideline
Transportation with
liquid is prohibited
The equipment is not allowed to be transported with liquid to
prevent internal pipeline leakage.
Transport
a) The equipment should be fixed firmly before transportation
to prevent the equipment from moving due to vibration and
external forces. If there is excessive vibration and external
force, the internal equipment may be damaged.
b) Tilt angle should be ≤45°.Otherwise, the refrigeration
system will fail.
Operating environment
a) It is forbidden to use in special environments such as high
temperature, humidity, strong electromagnetic interference,
etc.
b) The equipment must be installed in a place where there is
no direct sunlight and away from the fire sources.
Installation
a) The equipment must be installed on a horizontal surface.
Otherwise, the refrigeration system will fail;
b) It is forbidden to place objects within 1 meters around the
air inlet and 1.5 meters around the air outlet. If the air inlet and

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the air outlet are blocked, the cooling ability that the equipment
should have cannot be realized.
Before commissioning
a) Make sure that the water supply pipe of equipment is not
blocked;
b) It is necessary to check the water pipe and the water pump
to confirm that there is a proper amount of water entering the
water pump and exhaust it through the water pump exhaust
valve, otherwise it will cause damage to the water pump;
c) Confirm that the state of the equipment is normal and safe,
otherwise there may be injury and damage.
Gently move the motor
impeller if the
equipment isn’t used
for a long time
For equipment that has not been used for a long time, it may
be difficult to start the pump at the first start. Please gently
move the motor impeller before the equipment is powered on.
The equipment is
forbidden to be
trampled on
Please do not step on or sit on the equipment. Otherwise, it
may cause injury accidents such as falling or overturning
Clean the air filter
regularly
Clean the air filter at least once a week. If it is blocked, the
cooling ability will decrease and the power consumption will
increase, and the alarm will not work properly.
Equipment surface
cleaning
a) Please use cleaning agents that are non-corrosive to metals
and plastics;
b) Please keep the cleaning agent properly after cleaning to
prevent liquid leakage;
c) The container for storing the cleaning agent must be sealed
completely to avoid danger.
No air blowing at the
water outlet
A temp sensor is installed inside the water inlet, and it is
forbidden to blow air inside the device with an air gun.
Wear protective gloves
during maintenance,
inspection and cleaning
a) The sharp edges of the condenser fins may cut the skin;
b)The temperature of the internal compressor and refrigerant
piping is very high, and direct skin contact may cause burns.
Anti-freezing
a) When the ambient temperature is lower than 0℃and the
machine is shut down for a long time, it is necessary to drain
the liquid and blow the water away in the system with
compressed air, otherwise there is a danger of freezing and
cracking the components and pipelines.
b) When room temperature is lower than 0 ℃, it is
recommended to use antifreeze with a concentration of not
more than 30% containing ethylene glycol or propylene glycol.

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I. Overview
This product is an industrial cooling device designed and manufactured for laser cutting,
laser welding, laser marking, laser engraving and other equipment that uses laser
processing. It can provide a temperature-stable cooling medium for the above application
scenarios.
The chiller is composed ofa compressor,a condenser, a throttling device (expansion valve
or capillary), an evaporator, and a water pump. Its working principle is that the chiller’s
refrigeration system cools the water, and the water pump delivers the low-temperature
cooling water to the equipment that needs to be cooled. Then the cooling water will take
away the heat, heat up and return to the chiller, and then be cooled again and transported
back to the equipment. In the refrigeration system of a chiller, the refrigerant in the
evaporator coil absorbs the heat of the return water and vaporizes into steam. The
compressor continuously extracts the generated steam from the evaporator and
compresses it. The compressed high-temperature, high-pressure steam is sent to the
condenser and later will release heat (heat extracted by the fan) and condense into a high-
pressure liquid. After being reduced by the throttling device, it enters the evaporator to be
vaporized, absorbs the heat of the water, and the whole process circulates constantly.
Users can set or observe the working status of the water temperature through the
temperature controller.
II. Model Illustration
CWFL- 1000 A N
④Water pump
③Electric source type
②Chiller model series
①Chiller application
Note: This model description only contains the description of the company's main product codes,
not all of them are listed. Please confirm with our company before ordering the specific model,
our company has the final interpretation right about it.

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III. Product Outlines & Parts
Note: The above-mentioned product outlines and part names are only for one of the models. The
outlines and parts installation may be slightly different in different models.
Power Switch
Temperature Controller
Air Inlet(Filter Gauze)
Water Supply Inlet
Electrical Connecting Box
Water Outlet L(laser circuit)
Air Outlet
Drain
Water Level Gauge
Alarm Output Port
Water Inlet L(laser circuit)
Water Outlet H(optics circuit)
Water Inlet H(optics circuit)
Water Pressure Gauge

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IV. Installation
1. Open the package and check whether the machine is in good condition
and whether the accessories are complete.
2. Please ensure that the working voltage of the chiller is stable and
normal.
Because the refrigeration compressor is sensitive to the power supply voltage, the normal
working voltage of our company's standard products is 210~240V (110V model is
100~120V). If wider operating voltage range is necessary, customization is available.
3. Equipment installation conditions and requirements.
(1) It must be installed on a horizontal surface and not tilted.
(2)The air outlet of the chiller should be at least 1.5m away from the obstacle, and the air
inlet must be at least 1m away from the obstacle (See below diagram).
(3) Do not install in harsh environments such as corrosive, flammable gas, dust, oil mist,
conductive dust, high temperature and humidity, strong magnetic field, direct sunlight, etc.
(4) Operating Environment
Ambient Temperature
Ambient Humidity
Altitude
0~40℃
≤90%RH
≤3,000m
(5) Medium Requirements
Cooling medium allowed by the chiller includes purified water, distilled water, high-
purity water and other softened water. It is forbidden to use oily liquids, liquids containing
solid particles, corrosive liquids, etc. Clean the filter element and replace the cooling water
regularly (about three months is recommended) to ensure the normal operation of the
chiller.
When the chiller is stored with water at room temperature lower than 2 ℃, it is
necessary to add anti-freezer in the chiller water tank. It is recommended to use antifreeze
with a concentration of not more than 30% containing ethylene glycol or propylene glycol.
After the temperature warms up, change to purified water, distilled water or other suggested
cooling media, let the chiller run for 30 minutes to remove the residual anti-freezer and
drain it, and then refill with unused circulating water.

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4. Determine the direction of the pipeline layout according to the water
inlet and outlet of the chiller, and ensure that the waterway is clean and
free of impurities, so as to prevent impurities from entering the waterway
and causing blockage or pump failure.
5. Plug in the power cord and turn on the power switch(It is forbidden to
start without water).
(1) After turning on the power switch, the circulating pump of the chiller starts to work.
When the new machine is turned on for the first time, there will be more air bubbles in the
pipeline, which will cause the machine to alarm occasionally, and it will return to normal
after a few minutes of operation.
(2) After starting the machine for the first time, check if the water pipes leaks immediately.
(3) After turning on the power, if the water temperature is lower than the set temperature,
it is normal that the cooling fan and other devices of the machine do not work. The
temperature controller will automatically control the working status of compressors,
solenoid valves, cooling fans and other components according to the set parameters.
(4) As it takes a longer time to start over the compressor and other components,according
to different conditions, the time is range from seconds to minutes, so do not turn off the
power and again on frequently.
6.Electrical connection.
(1) Please select the cable based on the max. rated current indicated on the label of the
chiller.
(2) Recommended reference standard for power cord diameter selection.
Rated current/ A
≤5
≤10
≤15
≤25
≤35
≤50
Wire diameter (copper wire)/ mm²
1.0
1.5
2.5
4.0
6.0
10.0
Note: This data is provided according to IEC 60204-1 standard and only for
reference. Standard cables must be used in the power cord.
(3) The main circuitof the power supply must be equipped with appropriate electric leakage
and overload protection devices, and the chiller must be well grounded.
(4) Less than ±10% of power supply voltage fluctuation and less than ±1Hz of frequency
fluctuation are allowed, and keep away from electromagnetic interference sources.
7. Fill Water & Exhaust Air.
(1) Fill Water
After the new machine is turned on, the air in the water pipe is emptied, and the water
level of the water tank will drop slightly. In order to keep the water level in the green area,
you can add water again. Observe and write down the current water level. After the chiller
has been running for a period of time, observe the water level gauge again. If the water
level drops significantly, check again if there is leakage in the water pipes.

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(2) Exhaust Air
After adding water for the first time or replacing water, exhaust the air in the water pump to
start use, otherwise the equipment will be damaged. The exhaust method is as follows：
Method 1: Under the state of shutting down, after adding water, remove the water outlet
from the laser circuit (OUTLET L) and connect the water pipe, drain for 2 minutes, and then
install it firmly.
Method 2：Open the water supply inlet, after starting the machine (water flows), repeatedly
press and fold the water pipe several times to drain the air from the pipe.
Method 3: Loosen the air exhaust plug of the water pump (do not unscrew), and air is
discharged until water flows out, and then tighten the air exhaust plug
(See below diagram, only the exhaust position of the horizontal pump is shown. According
to customer requirements and specific models, the pump will be different, and the exhaust
position will also be different. For the specific situation, see the external mark of the pump).
8.Test-run Check.
(1) Check whether the pipeline connection is correct, and there must be no bubbling or
water leakage;
(2) Check whether the inlet and outlet water ball valves are open and the drain valve is
closed;
(3) Check the liquid level of the water tank;
(4) Confirm that the electrical wiring of the equipment is connected correctly;
(5) Confirm whether the equipment is grounded.

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V. Operating States &Parameters Adjustment
1. Temperature control panel introduction
2. Working status indicator of the temperature controller
Refrigeration indicator: during refrigeration, the indicator is on; In constant temperature
status, the indicator is off; During delay, the indicator flashes.
Refrigerant solenoid valve indicator: the indicator is on when connected and it’s off
when disconnected
Heating indicator of the low temperature circuit: the indicator is on when connected
and it’s off when disconnected.
Heating indicator of the high temperature circuit: the indicator is on when connected
and it’s off when disconnected.
3. Rapid adjustment:
Press “SET” button to set the temperature of the low temperature circuit. The low
temperature window indicates F0 (F1 in intelligent control mode) and the high temperature
window flashes with real-time value. Press or buttons to change the value and
save. Press “SET” button again to set the temperature of the high temperature circuit. The
low temperature window indicates F4 (F5 in intelligent control mode) and the high
temperature window flashes with real-time value. Press or buttons to change the
value and save. Press “RST” button to save the data and exit.
4. Press key once to enter status display menu and it indicates t1 which
suggests temperature of room temperature probe.
Press key twice to indicate t2 which suggests flow rate of the low
temperature circuit. ((L/min, resolution rate=0.1)
Press key twice to indicate t3 which suggests flow rate of the high
temperature circuit. ((L/min, resolution rate=0.1)
Press key three times to return to normal operation.
5. In the first connection, press button to cancel delay time and
connect the compressor.
6. User data setting (F0~F16 available):
The and buttons are for changing and storing data. The and buttons are
for changing items. Press and hold “SET” and buttons simultaneously for 6
seconds to enter data setting. The lower window indicates “PAS” while the upper window
indicates “00”. Press and buttons to change the password (08). Press “SET”
button. If the password is incorrect, the lower window will indicate F0 and then data

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changing is available. If the password is incorrect, it will return to temperature display. If
there is no button pressed in 20 seconds, the temperature controller will automatically exit
from the data setting status. Press “RST” button to save the data and exit.
7. Restore factory setting:
Press and hold and buttons for 3 seconds and it indicates “rE” and the supplier
data and user data will restore to default value. Continue to press those buttons for
another 3 seconds, it will return to temperature display.
8. Parameter setting table
Data
Function
Range
Default
value
Description
Remark
F0
Setting temperature of
low temperature circuit
-20~40. 0℃
25.0℃
Setting
menu of low
temperature
circuit
F1
Temperature difference
coefficient
-15.0- 05.
-02.0
F2
Refrigeration return
difference
0.1~3.0℃
0.8℃
F3
Control mode
00~01
00
01=intelligent control mode
00=constant temperature
control mode
F4
Setting temperature of
high temperature circuit
-20~40.0℃
30.0℃
Setting
menu of
high
temperature
circuit
F5
Temperature difference
coefficient
-15.0~5.0
-0.20
F6
Refrigeration return
difference
0.1~3.0℃
0.8℃
F7
Control mode
00~01
01
01=intelligent control mode
00=constant temperature
control mode
F8
Ultrahigh water
temperature alarm
1.0~60.0℃
10.0℃
Shared by
high & low
temperature
circuit
F9
Ultralow water
temperature alarm
1.0~20.0℃
15.0℃
F10
Ultrahigh room
temperature alarm
40.0~50.0℃
45.0℃
F11
Highest water
temperature under
intelligent control mode
F12~40.0℃
30.0℃
Intelligent control mode
valid
F12
Lowest water temperature
under intelligent control
mode
1.0℃~F11
20.0℃
F13
Password
00~99
08
00=cancel password
function
F14
Water flow alarm of low
temperature circuit
0.0~20.0
2.0L/min
F15
Water flow alarm of high
temperature circuit
0.0~20.0
0.5L/min
F16
Communication address
1~247
1

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VI. Alarm & Output Terminal
In order to guarantee the equipment will not be affected while abnormal situation
happens to the chillers, the chillers are designed with alarm protection function.
1. Alarm output terminals and wiring diagram.
2.Alarm causes and working status table.
Display
Condition
Alarm
code
Buzzer
OUT
H1、H2
OUT
H1、H3
Circulating pump works properly
DISCONNECTION
BREAKOVER
Ultrahigh ambient temperature alarm
E1
Sounds
BREAKOVER
DISCONNECTION
Ultrahigh water temperature alarm of
laser circuit
E2
Sounds
BREAKOVER
DISCONNECTION
Ultralow water temperature alarm of
laser circuit
E3
Sounds
BREAKOVER
DISCONNECTION
Ultrahigh water temperature alarm of
optics circuit
E4
Sounds
BREAKOVER
DISCONNECTION
Ultralow water temperature alarm of
optics circuit
E5
Sounds
BREAKOVER
DISCONNECTION
Ambient temperature sensor failure
E6
Sounds
BREAKOVER
DISCONNECTION
Water temperature sensor failure of
laser circuit
E7
Sounds
BREAKOVER
DISCONNECTION
Water temperature sensor failure of
optics circuit
E8
Sounds
BREAKOVER
DISCONNECTION
Liquid level alarm
E9
Sounds
BREAKOVER
DISCONNECTION
External input alarm 2
E10
Sounds
BREAKOVER
DISCONNECTION
Flow alarm of laser circuit
E11
Sounds
BREAKOVER
DISCONNECTION

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Flow alarm of optics circuit
E12
Sounds
BREAKOVER
DISCONNECTION
Chiller power failure
BREAKOVER
DISCONNECTION
Note: The alarm output port is connected with a set of normally open and normally closed contacts
of the relay inside the machine. The working current should be smaller than 3A while the working
voltage should be smaller than 300V.
VII．Maintenance
The equipment must be shut down for maintenance, and the power supply must be cut off.
The operation can only be carried out after 3 minutes, otherwise there will be a risk of
electric shock. When the room temperature is lower than 2°C, the internal water must be
drained when the machine is shut down for a long time.
1. Remove Dust Regularly
Regularly disassemble the filter gauze for cleaning and use a compressed air gun to blow
away the dust on the condenser (about 1 week is suggested and the air filter must not be
missing for a long time).
2. Guarantee Water Quality
A certain amount of impurities will accumulate in the filter element over a period of time,
which will cause a decrease in water flow, or even a secondary pollution. Therefore, it is
necessary to clean or replace the filter element regularly.

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VIII. Simple Troubleshooting
Failure
Failure Cause
Approach
Machine turned on but
unelectrified
Power cord is not plugged
in place
Check and ensure the power interface
and the power plug is plugged in
place and in good contact.
Fuse burnt-out
Open the electric box cover, check the
fuse and replace with a spare one if
necessary. Check whether the power
supply voltage is stable; Check and
ensure the power interface and the
power plug are in good contact.
Flow Alarm, Use a water pipe
to directly connect to the
water outlet and inlet but still
without water flowing
Water level in the water
tank is too low
Check the water level gauge display,
add water until the level shows in the
green area; And check whether water
circulation pipe leaks.
Flow alarm occurs while
chiller is connecting toother
equipment, but there is water
flowing and no alarm when a
water pipe is directly
connected to the chiller
water outlet and inlet.
Water circulation pipes are
blocked or a pipe bending
deformation.
Check water circulation pipe
Ultrahigh water temperature
alarm.
Blocked dust gauze, bad
thermolysis
Disassemble and clean the dust gauze
regularly
Poor ventilation for air
outlet and inlet
To ensure a good ventilation
for air outlet and inlet
Voltage is extremely low or
unstable
To improve the power supply circuit or
use a voltage regulator
Improper parameter
settings on thermostat
To reset controlling parameters or
restore factory settings
Switch the power on and
off frequently
To ensure there is sufficient time
for refrigeration
(more than 5 minutes)
Excessive heat load
Reduce the heat load or use other
model with larger cooling capacity
Ultrahigh room temperature
alarm.
The room
temperature is too high for
the chiller
To improve the ventilation to
guarantee that the machine is running
below 40℃ room temperature.
Serious problem of
condensate water
Water temperature is much
lower than ambient
temperature, high humidity
Increase water temperature or
to preserve heat for pipeline
Water drains slowly from
drain port during water
changing
Water supply inlet is not
open
Open the water supply inlet
Startup flow alarm
Bubble in the water pipe
Exhaust the air

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Attachment –Schematic
CWFL-1000

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CWFL-1500/2000/3000