HANLI HL-1000 Series User manual

User Manual of Fiber Laser Chiller
-1-
WUHAN HANLI REFRIGERATION TECHNOLOGY CO., LTD.
Add: NO.168, Tongjiang 1st Road, Hannan District, Wuhan, China.
Post Code: 430090 Email: hanli[email protected]
Tel: [phone]
website： www.hanlizl.com


HL-1000/1500/2000/3000/4000/6000/8000/12000/15000 /20000/30000 Series
SCH-1000/1500/2000 Series
User’s Manual of Fiber Laser Chiller
Hanli refrigeration

-2-
Catalogue
Introduction ------------------------------------------------------------------------------------- 4
Warning notices----------------------------------------------------------------------------------5
1 summarize----------------------------------------------------------------------------------- 8
2 service conditions ----------------------------------------------------------------------------- 8

2.1 environmental requirement ------------------------------------------------------- 8

2.2 Medium requirements------------------------------------------------------------------9
3 Model Coding ----------------------------------------------------------------------------------10
4 performance parameter --------------------------------------------------------------------10
5 Shape and component name-----------------------------------------------------11
6 Installation---------------------------------------------------------------------------------11
6.1 Installation conditions and requirements---------------------11
6.2 Water connection ---------------------------------------------------------------------13
6.3electrical connection -----------------------------------------------------------------14
6.4 Add water and exhaust-------------------------------------------------------------14

6.4.1 add water-------------------------------------------------------------------14
6.4.2 Exhaust and drain------------------------------------------------------------14

6.5 warm prompt --------------------------------------------------------------------------15
7 Product usage --------------------------------------------------------------------------------15

7.1Check before commissioning---------------------------------------------------------15
7.2 Introduction of controller panel------------------------------------15

7.2.1Introduction of An integrated controller panel ----------------16
7.2.2Split controller panel introduction ----------------------------------17

7.3 starting up display --------------------------------------------------------------------17
7.4 temperature display ------------------------------------------------------------------17

7.4.1Integrated controller temperature display--------------------------17
7.4.2Separate controller temperature display-----------------------------18
7.5 parameter setting --------------------------------------------------------------------18
7.5.1Integrated controller parameter setting------------------------------18

7.5.2Split controller parameter setting---------------------------------------18
8 maintaining ----------------------------------------------------------------------------------19
User Manual of Fiber Laser Chiller

User Manual of Fiber Laser Chiller
-3-
8.1 Summer dust -------------------------------------------------------------------------------19
8.2 Winter antifreeze ---------------------------------------------------------------------------19

8.3 current maintenance ----------------------------------------------------------------------20

9 Failure analysis and elimination----------------------------------------------21
10 circuit diagram-------------------------------------------------------------------------------22
11 Transportation and storage---------------------------------------------------24

11.1 transportation requirement-----------------------------------------------------24
11.2 Storage requirements--------------------------------------------------------------24

12 other description------------------------------------------------------------------------25
12.1 service support ----------------------------------------------------------------------25

12.1.1warranty coverag e-------------------------------------------------------------25

12.1.2Outside the scope of the warranty ---------------------------------------------------25
12.2 any other business -----------------------------------------------------------------25


User Manual of Fiber Laser Chiller
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foreword
Thank you for your trust in our company and choose to
fiber laser chillers. In order to enable you to better
use our
understand and
use our products, make them play the best results, and provide you with
complete after-sales service, please contact us Read this manual
carefully before use, and you can refer to this manual if you have any
doubts in the process of using the product.
This manual is prepared for the owners and users of the chiller. It
includes product performance parameters, appearance and component names,
working principles, daily maintenance, fault descriptions and
troubleshooting methods, etc., for installation, operation, debugging and
maintenance. This manual is not a quality guarantee. Corrections to
printing, modification of product information, and product improvement are
all explained by our company without prior notice. The updated content
will be incorporated into the reprinted manual. If you have any questions
about the use of the product or suggestions for improvement, please
contact us.

There are electrical parts in the machine
. It is forbidden to run without a cover.
There is danger of electric shock.
It is forbidden to use the equipment beyond the
specifications in order to avoid serious accidents
such as equipment breakage, injury, fire and
electric shock.
Reminder mark
Any part of the body and heat-resistant items must be
kept away from the high temperature area, otherwise it
will cause personal injury or property damage
User Manual of Fiber Laser Chiller
-5-
Warning notices
Ｉｎ ｏｒｄｅｒ ｔｏ ｅｎｓｕｒｅ ｙｏｕｒ ｐｅｒｓｏｎａｌ ｓａｆｅｔｙ ａｎｄ ａｖｏｉｄ ｐｒｏｐｅｒｔｙ ｄａｍａｇｅ， ｙｏｕ ｍｕｓ
ｔ ｐａｙ ａｔｔｅｎｔｉｏｎ ｔｏ ｔｈｅ ｗａｒｎｉｎｇｓ ｉｎ ｔｈｅ ｉｎｓｔｒｕｃｔｉｏｎｓ ｏｆ ｏｕｒ ｃｏｍｐａｎｙ． Ｔｈｅ ｗａ
ｒｎｉｎｇｓ ａｒｅ ｌｉｓｔｅｄ ｂｅｌｏｗ ａｃｃｏｒｄｉｎｇ ｔｏ ｔｈｅ ｌｅｖｅｌ ｏｆ ｄａｎｇｅｒ， ｂｕｔ ｎｏｔ ｌｉｍｉｔｅｄ
ｔｏ ｔｈｅ ｆｏｌｌｏｗｉｎｇ ｌｉｓｔ． Ｇｅｎｅｒａｌ ｋｎｏｗｌｅｄｇｅ ｏｆ ｅｌｅｃｔｒｉｃｉｔｙ ｕｓｅ ａｎｄ ｓａｆｅｔｙ ｒｅｇ
ｕｌａｔｉｏｎｓ ｓｈｏｕｌｄ ａｌｓｏ ｂｅ ｆｏｌｌｏｗｅｄ．
Prompt project
Please be operatedby
professional
technicians
High Voltage Risk
operation specification
Handling, installation, piping, electrical, operation,
maintenance, overhaul and other operations must be
carried out by professionalpersonnel
Contact with electrical parts can cause serious
personalinjury or death
scald burn risk
electrical
connection
a)The power supply system must be selected in accordance
with therelevant content of the nameplate or manual;
b) The cable must use a standard cable, and the wire
diameter is selected according to the standard;
c) The grounding must be installed and the connection
must bereliable,otherwise it will cause the
danger of electric shock or fire
maintenance
You must cut off the power for 3 minutes
before starting theoperation.
Scrapping
When the equipment reaches the service life and needs to be
scrapped, it must be disposed of with industrial waste, and it
must be scrapped with the guidance of professional personnel.
Do not use beyond
the scope of the
specification
Can not be used in
explosive
environment
Do not install in dangerous places with flammable gas
The equipment shall
not be operated
without a cover
Danger
Be sure to take safety precautions, otherwiseit will cause death or
serious bodily injury

When the equipment is running, it is forbidden
to put fingers or foreign bodies into the gaps
of theequipment, otherwise it will
cause personal injury.
There are rotating parts installed in the equipment.
Prompt project
Transportation and
installation
During the transportation and installation of
theequipment, the equipment must be firmly fixed,
otherwisethere is a risk of overturning and falling
User Manual of Fiber Laser Chiller
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Water proof
Do not let the equipment water, water, or there
may be a short circuit and electric shock risk.
Reminder mark
electric protection
The access end of the power cable must match
the leakage and overload protection devices
according to the rated current marked on
the nameplate of the equipment.
Stop the operation
immediately in case of
abnormality
When the equipment is abnormal, as long
as the reason is not clear, do not start,
otherwise there will be damage, electric
shock, fire, injury risk.
Fingers and foreign bodies
should not be inserted
into the equipment gaps
Refrigerant leakage
a) When the refrigerant leaks, be sure to
ventilate and ventilate, otherwise when the
refrigerant fills the enclosed space in
large quantities, it may cause anesthesia
and suffocation to the human body; b) Avoid
contact with skin, otherwise it will cause
frostbite.
Do not transport with liquid
The equipment is forbidden to be transported
with liquid to prevent leakage of internal
pipelines.
Carry
a) The equipment should be fixed 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) The
inclination angle is ≤45°, otherwise the
refrigeration system will fail.
Note Please take safety measures, otherwise it may cause minor personal injury and property damage
operation specification
Prompt project
reminder mark operation specification
Be sure to take safety precautions, otherwiseit will cause death or serious
bodily injury
Alarm

b) It is necessary to check the water pipe and the
water pump to confirm that a proper amount of
water
enters the water pump and exhaust the air through
the water exhaust valveotherwise the water pump
will be damaged
a) Make sure that the water supply pipe on the
equipment side is not blocked;
User Manual of Fiber Laser Chiller
-7-
operating environment
a) It is forbidden to use it in special
environments such as high temperature, humidity,
and strong electromagnetic interference;
b) The equipment must be installed in a place
where there is no direct sunlight and away from
fire sources.
installation
a) The equipment must be installed horizontally,
otherwise the refrigeration system will fail; b)
It is forbidden to place objects within 1.5
meters around the air inlet and 2.0 meters around
the air outlet. If the suction and exhaust air
is hindered, the cooling capacity that the
equipment should have cannot be used.
Before the test run
c) Confirm that the state of the equipment is
normal and safe, otherwise it may cause injury
and damage.
No trampling on the
equipment
Please do not board the device or sit on it,
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
the air filter is blocked, the cooling capacity
will decrease, 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) After cleaning, please keep the cleaning agent
properly to prevent the liquid from leaking
anywhere in the equipment;
c) The container for storing the cleaning agent
must be completely sealed to avoid danger.
Protective gloves should
be worn when
maintenance, overhaul
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.
antifreezing
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 in the system with
compressed air, otherwise there is a danger of freezing
and cracking the components and pipelines.

User Manual of Fiber Laser Chiller
-8-
1 summarize
This product is a cooling device designed and manufactured for laser cutting, laser welding, laser
engraving, laser marking, laser printing and other laser processing equipment. It can provide two cooling
media with stable temperature for the above application scenarios, one is low temperature The cooling liquid
cools the fiber laser, and the other is room temperature cooling liquid, which cools the fiber laser
cutting head.
compressor
condenser
draught fan
throttling gear
ev a pora tor
tank
laser
no r m a l t e mp er a t u r e h e a ti ng
water pump
F i g . 1 Composition and working principle o f the chiller system
The chiller is composed of a compressor, a condenser, a throttling device, an evaporator, a water tank
, and a water pump. Its working principle is that the compressor compresses the superheated vapor sucked
from the evaporator into high-temperature and high-pressure gas, and discharges it to the condensation The
condenser releases heat into a high-pressure liquid, which is reduced by the throttling device and becomes a
low-temperature and low-pressure subcooled liquid. The low-temperature and low-pressure subcooled liquid is
vaporized by the evaporator to absorb heat into superheated steam, and then returns to the compressor to
enter the next cycle. Refrigeration function. The heat absorbed by the vaporization of the evaporator comes
from the cooling medium, and the temperature of the cooling medium will be lowered. The low-temperature
cooling liquid is divided into two by the water pump and pressed out. One low-temperature cooling liquid is
used to cool the laser, and the other is heated by a heating device to a normal temperature cooling liquid
for the laser. The cutting head cools down.
2 service conditions
 2.1 e n vi r o n mental r e q u i r e ment
environment temperature：0～45℃；
Cutting head

User Manual of Fiber Laser Chiller
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


relative humidity：≤90%；
elevation ：≤3000m；
The relationship between the cooling medium temperature and the ambient temperature
is shown in Fig.2
F i g u r e 2 Operating range o f equipment
Note: the above operating range is obtained in the laboratory according to standard product testing, for
reference, the operating range of each specific model may be slightly different, please contact the
manufacturer for details.
2.2 Medi u m requirements
The cooling medium must be softened water, such as purified water, distilled water, high purity water,
etc., ethylene glycol with volume ratio of less than 30% is allowed, or ethanol with volume ratio of less
than 20% is allowed, preservatives and sterilizers approved by the manufacturer are allowed to be added.
Normal operating range
e n v i r o n m e n t t e m p e r a t u r e ℃
-20 -15
5
10
15
20
0-5-10
（b）Add antifreeze running range
介
质
温
度
℃
Normal operating range
介
质
温
度
℃
10
20
30
40
50403020100 e n v i r o n m e n t t e m p e r a t u r e ℃
（a）Pure softening water operating range
medium temperature ℃
medium temperature ℃

User Manual of Fiber Laser Chiller
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It is strictly prohibited to use antifreeze with a volume ratio> 30%,
oil and oil-based liquids, flammable and explosive liquids, liquids
with solid particles, and liquids that are corrosive to aluminum and
stainless steel are strictly prohibited.
3 Model Coding
□□
□
-
□□□□-Q G □/
□
Q ua nt ity of m ulti- c h a nn el wa ter s upply
(s in g le c h a n nel om it ted )
G-Water filling filter (water free filter omitted)
Q-Stainless steel coil evaporator
Matched laser power
Hanli industrial chiller category, HL represents cutting machine, Sch represents hand-
held welding machine
For example: HL-3000-QG2/2 means a laser cutting machine with a matching laser power of 3000W, using a
stainless steel coil evaporator, a filter installed in the water circuit, and dual temperature two-way water
supply.
For example: SCH-1500 means a handheld welding chiller with a matching laser power of 1500W, a water
filter is installed by default, and two-channel water supply with dual temperature.
Note: This model description is the company's standard product code description, and does not list all
models. Please confirm with our company before ordering the specific model. If there is any change, we will
not notify you.
4 performance parameter
Serial
number
Model voltage power
（kW） refrigerant
Note amount
of fluorine
（kg）
head of
delivery
（m）
Flow
（m³/h）
weight
（kg） dimension（mm） water capacity （L）
1 HL-1000-
QG2/2
220V
50Hz 2.0 R410A 0.45 38.5 2 60 600×500×840 13
2 HL-1500-
QG2/2
220V
50Hz 2.7 R410A 0.50 47.5 2 63 610×500×890 13
3 HL-2000-
QG2/2
220V
50Hz
4 HL-3000-
QG2/2
220V
50Hz ３．９ R410A 1.00 48.5 4 90 760×560×1050 40
5 HL-4000-
QG2/2
220V
50Hz 5.0 R410A 1.30 58.5 4 100 810×610×1150 40
Ｎｕｍｂｅｒ ｏｆ ｔｅｍｐｅｒａｔｕｒｅ ｚｏｎｅｓ （ｓｉｎｇｌｅ ｔｅｍｐｅｒａｔｕｒｅ ｏｍｉｔｔｅｄ）
３．３ R410A 0.70 47.5 2 75 660×540×970 19

User Manual of Fiber Laser Chiller
-11-
6 HL-6000-
QG2/2
380V
50Hz 8.4 R410A 1.80 58.5 4 130 820×700×1410 54
7 HL-8000-
QG2/2
380V
50Hz
8 HL-12000-
QG2/2
380V
50Hz 17.0 R410A ２．１＊２ 68.0 8 280 1380×860× 1355 175
9 HL-15000-
QG2/2
380V
50Hz 19.0 R410A 2.4×2 68.0 8 310 1400×800× 1460 160
10 SCH-1500 220V
50Hz 1.7 R410A 0.38 38.5 2 50 800×490×430 16
Note: the above table is part of the standard product performance parameters, for reference only, if there is change without notice.
5 Shape and component name
Note: The above appearance and component names are only one of the models, and the appearance and component names
of different models will be slightly different.
6 Installation
6.1 Instal l ation c o n ditions and requirements
Open the package and first check whether the equipment is in good condition and the list of accessories is complete.
12.5
R410A 3.70
68 8 210
1000×800×
1460 105
11
HL-20000
-
QG2/2
380V
50Hz 26.0 R410A 4.1×2 1980×900×
1270 300
50 12
400

User Manual of Fiber Laser Chiller
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


It must be installed horizontally and cannot be tilted. As shown in Figure 3, anchor bolts should be
used for equipment without casters, and the universal wheels should be locked for equipment with
casters.
There should be no obstructions within 1.5m of the air inlet and 2.0m of the exhaust, so as not to
affect the heat dissipation of the equipment, as shown in Figure 4.
The product must not be installed in harsh environments such as corrosive, flammable gas, heavy dust,
oil mist, metal and other conductive dust, high temperature and humidity, strong magnetic field,
direct sunlight, etc., as shown in Figure 5.
F i g 3 Requirements for
equipment installation form
Figure 4 Equipment installation
space requirements

User Manual of Fiber Laser Chiller
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Fig5 Equipment i n s t a l l a t i o n e n v i r o n m e n t requirements
6.2 W a ter c o n n e ct i o n


According to the equipment inlet and outlet mark to determine the pipeline layout direction, in case the
equipment can not operate normally.
Pipeline internal construction needs to be cleaned up, strictly avoid impurities, once the system into
the impurities, easy to reduce the refrigeration capacity, and may cause the failure of the pump or
refrigeration system.
Pipeline connection: the connection method of the chiller and the laser, as shown in Figure 6, the inner
diameter of the pipe should not be smaller than the diameter of the water inlet and outlet of the
chiller. If the inner diameter of the pipe is smaller than the requirement, the chiller manufacturer
must agree.
Pipeline resistance: The distance between the connecting pipelines between equipment should be the
shortest to avoid right angles and bends, and the total pressure drop should be ≤0.05MPa. If metal
pipes are used, insulation measures should be taken to prevent energy loss. The pressure of the pipeline
must reach 1.5 times of the water supply pressure of the pump




F i g 6 S c h e m a t i c d i a g r a m o f c o n n e c t i o n
between chiller a n d l a s e r
D o n o t p u t t h e e q u i p m e n t i n
d i r e c t s u n l i g h t

User Manual of Fiber Laser Chiller
-14-
6.3 e l e ctric a l c onnection
1. Please refer to the wiring mark of the chiller when wiring.
2. Recommended reference standards for power cord diameter selection
Rated current / A ≤5 ≤10 ≤15 ≤25 ≤35 ≤50
Power cable diameter
(copper wire)/ mm21.0 1.5 2.5 4.0 6.0 10.0

This data is provided according to the IEC 60204-1 standard and is for reference only.
The power cord must use a standard cable
Refer to the nameplate of the chiller for the rated power
3. The main circuit of the power supply must be equipped with appropriate leakage and overload protection devices,
and the chiller must be well grounded
4. The power supply voltage is allowed to fluctuate less than ±10%, the frequency fluctuation is less than ±1Hz,
and it is far away from electromagnetic interference sources.
5. Connection of signal terminals: The output is the passive dry node signal of flow alarm and over-temperature alarm
.
6.4 a d d w a t e r a n d a i r o u t
6.4.1 add water
Add softened water to the liquid level standard area (green area) through the water inlet of the equipment, as shown in Figure
7.
F i g . 7 L i q u i d l e v e l i d e n t i f i c a t i o n
6.4.2 air out and drain out
After adding water for the first time and replacing with new water, exhaust the air in the water pump to start use, otherwise
the equipment will be damaged
For the exhaust method, slowly loosen the exhaust screw plug of the water pump (do not unscrew), and air is
discharged until water flows out, and then tighten the exhaust screw plug (see Figure 8, only the vertical
type is shown in the figure) The exhaust position of the pump and 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 details, see the external prompt mark of the pump) Note: When you need to drain the liquid in
the equipment in winter, loosen the drain plug below to drain the liquid.

User Manual of Fiber Laser Chiller
-15-
Fig8 P u m p e x h a u s t and d r a i n a g e
6.5 warm prompt
After the electric water pump on the equipment runs for a period of time, continue to
fill the water tank to the standard area of the liquid level.
7 Products use
7.1 C h ec k b efore c om m is s ioning




Check whether the water inlet and outlet ball valves are open and the drain valve is closed;
Check whether the water connection is correct, whether it is loose, and there must be no bubbling and
water leakage;
Check whether the liquid level of the water tank is in the standard area;
Check whether the power source conforms to the product nameplate, the 380V power cord is a three-phase
five-wire system, and the 220V power cord is a single-phase three-wire system;
Check whether the equipment is grounded;
Check that the electrical wiring between the equipment is properly connected.


7.2 Co n t r o l l e r panel introduction
At present, there are three kinds of controllers for Hanli fiber laser chillers. Most models use split
digital tube controllers, as shown in Figure 9. The dual 8-display integrated digital tube controller
used by a small number of models in the early stage is shown in Figure 10. Shown.
exhaust screw is blocked
drain screw is blocked
exhaust screw is blocked
drain screw is blocked

-16-
 7.2.1
F i g . 9 s p l i t c o n t r o l l e r p a n e l
User Manual of Fiber Laser Chiller
7.2.2 Introduction of the integrated controller panel
real-time temperature
setting temperature
F i g . 1 0 integrated c o n t r o l l e r p a n e l

User Manual of Fiber Laser Chiller
-17-

 7.3 star t i n g u p d i s p l a y
After the integrated controller device is powered on, the PV and SV areas will display the software version information, and
enter the temperature display state after about 7 seconds


After the split controller device is powered on, the display window will display the software version
information (Fxx/v100/A00), and it will enter the temperature display state after about 7 seconds.
7.4 T e m p e r a t u r e d i s p l a y
7.4.1 Integrat e d controller temperature d isp l ay
PV area shows "actual temperature", SV area shows "set temperature".
Low temperature water interface: PV area and SV area digital tube
represent the display of low temperature water temperature and low
temperature water setting temperature.
Normal temperature water interface: PV shows real time value, SV shows
H{followed by F01 normal temperature water difference}, such as H3.0
Press <Down>button to switch between the normal temperature water and
low temperature water interface, press <Up> button or 30s without operation
the low temperature water interface.
to automatically switch back to
Introduction of the split controller panel
7.2.3

User Manual of Fiber Laser Chiller
-18-
 7.4.2 Sp l i t c ontroller t e mp e r at u r e d isp l ay
Display window default display of low temperature water temperature
measurement (L.XX. X)
When the temperature is displayed, press the <▼> key to switch the display of room temperature water
measurement water temperature (H.xx.x), low temperature water set water temperature (S.xx.x), and room
temperature water set temperature difference (d.xx.x). , 30s no switching operation will automatically
return to the low temperature water interface.
[Note] : L./H./S./ D. is the temperature code, and XX. X is the temperature value.


7.5 parameter setting
7.5.1 Integrat e d c o n t r o l l e r para m eter s etting
In the non-fault state, the SV set temperature will flash after pressing the <Set> key. At this time,
the low temperature water set temperature can be modified by pressing the <Up> or <Down> key.

(When the low temperature water interface is the low temperature water setting temperature, when the
normal temperature water interface is [F01 normal temperature water temperature difference] and the main
interface cannot be modified), press the <Set> key to save the set value and exit the setting state after the
setting is completed . (If there is no key operation for 5 seconds during the setting process, the system
will automatically save the set value and exit the setting state). 。
Normal temperature water set temperature = [low temperature water set temperature] + [F01 normal
temperature water temperature difference], to change the normal temperature water set temperature, you need
to modify [F01 normal temperature water temperature difference].
Press the <Up>+<Down> key for 5 seconds to enter the factory parameter setting state. The factory setting
parameters are generally not adjusted. If you need to adjust, please seek the consent of the chiller
manufacturer.
7.5.2 Para m e t e r s etting o f s p l i t c ontroller
In the non-fault state, press the <▲>+<▼> keys at the same time to enter the low temperature water set temperature setting
interface, set the temperature
xx.x is displayed flashing, and the set temperature can be modified by pressing the <▲> or <▼> key at this time.
If there is no key operation for 5 seconds after the setting is completed, the system will automatically
save the setting value and exit the setting state.
Normal temperature water set temperature = [low temperature water set temperature] + [F01 normal
temperature water temperature difference], change the factory parameter [F01 normal temperature water
temperature difference]
In the temperature display interface, press the <▲>+<▼> keys at the same time for 5 seconds to enter
the factory parameter setting state. The factory setting parameters are generally not adjusted. If you need
to adjust, please ask the chiller manufacturer for consent.
In the process of selecting the manufacturer's parameters, press <▼> for parameter selection, press <▲>
to enter parameter setting, no button operation after 15s exit the manufacturer's parameter setting (display
window displays parameter items).
When setting the parameters, you can modify the parameter value through <▲> or <▼>. After 5 seconds of
no key operation, or press the <▲>+<▼> key to return to the parameter selection and save (the display
window flashes to display the parameter value)

User Manual of Fiber Laser Chiller
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8maintaining
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For maintenance,equipment must be shut down, cut off the power supply, and can only be operated after
3 minutes, otherwise there will be a risk of electric shock. When the ambient temperature is lower than
2°C, the internal water must be drained when the machine is shut down for a long time.
8.1 D u s t p r e v e n t i o n i n s u m m e r
In summer, please clean the condenser and dust filter of the equipment about 15 days, as shown in Figure 11.
Figure 11 Cleaning and dust removal process of the dust screen
 8.2 Wi n t e r a ntifreeze
Figure 12 Winter anti-freezing maintenance
When the equipment is being transported or not in use for a long time, the water in the water tank should
be drained through the drain valve, and the drain screw under the water pump should be loosened to drain the
remaining water in the water pump, as shown in Figure 12.
If the ambient temperature at night is lower than 2℃, it is recommended that the customer does not
stop the machine or add antifreeze. The volume ratio of ethylene glycol is selected according to Table 1.
The preventing freezing point is equal to the ambient temperature of the equipment minus about 5℃. When the
average daily temperature is higher than 5°C, replace the water containing antifreeze with softened water.
Compressed air blowing dustproof mesh Wash with water and then dry
First open the drain
valve to drain the
water
Then insert the air
gun into the water
outlet to inflate and
drain Remove the pump exhaust screw
Remove the screw at the lower end of the
water pump

User Manual of Fiber Laser Chiller
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Table 1 Correspondence between different volume ratios of ethylene glycol and freezing point
volume ratio/% freezing point
/℃ volume ratio/% freezing point
/℃ volume ratio/% freezing point /℃
1.8 -0.6 26.0 -13.0 51.9 -41.0
3.6 -1.3 28.0 -15.0 53.9 -44.0
5.4 -2.0 29.9 -17.0 56.0 -48.0
7.2 -2.7 31.9 -18.0 78.9 -47.0
9.1 -3.5 33.8 -20.0 81.0 -43.0
10.9 -4.4 35.8 -22.0 83.1 -40.0
12.8 -5.3 37.8 -24.0 85.2 -36.0
14.6 -6.3 39.8 -26.0 87.3 -33.0
16.5 -7.3 41.8 -28.0 89.4 -29.0
18.4 -8.0 43.8 -31.0 91.5 -26.0
20.3 -9.0 45.8 -33.0 93.6 -23.0
22.2 -11.0 47.8 -36.0 95.8 -19.0
24.1 -12.0 49.8 -38.0 100 -13.0
8.3 Daily m a intenance
The working scene of the fiber laser chiller is very bad. In order to ensure the good performance of the
equipment and extend the service life of the equipment, the equipment needs to be maintained. The frequency of
maintenance is once a week. The maintenance work includes but is not limited to the following aspects of work
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Check the condenser, check whether the air duct is blocked by foreign matter, and whether the air inlet
and outlet around the equipment is smooth;
Clean the condenser and clean the dust-proof net;
Check the cooling medium for foreign matter, whether it breeds microorganisms, etc. Generally, replace
the cooling medium within 15-20 days. The cooling medium must be pure water, distilled water or high-
purity water;
Check whether the water connection is loose and whether the water pump is leaking;
Check the water tank and clean up the dirt deposited inside the water tank;
Clean the filter in the water circuit of the equipment regularly. Generally, the filter is cleaned once
every 7-10 days. The two types of filters commonly used by our company are shown in Figure 13. The Y-
type filter is installed at the water pump suction or the equipment outlet with a built-in stainless
steel filter. The device is placed in the water tank;
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