Raycus RFL-C20000M-CE User manual

Global Version RFL-C20000M-CE
Continuous-Wave Fiber Laser
User Guide
WuhanRaycusFiberLaserTechnologiesCo., Ltd.

Wuhan Raycus Fiber Laser Technologies Co., Ltd.
User Guide of RFL-C20000M-CE
CONTENTS
1. Safety Information .......................................................................................................................................................... 1
1.1. Security Label .................................................................................................................................................................. 1
1.2. Laser Safety Grade .......................................................................................................................................................... 2
1.3. Optical Safety .................................................................................................................................................................. 3
1.4. Electrical Safety................................................................................................................................................................ 3
1.5. Other Safety Rules .......................................................................................................................................................... 3
2. Product Description ........................................................................................................................................................ 4
2.1. Features .......................................................................................................................................................................... 4
2.2. Package Parts .................................................................................................................................................................. 4
2.3. Unpacking and Inspection............................................................................................................................................... 4
2.4. Operation Environment ................................................................................................................................................. 5
2.5. Attentions ....................................................................................................................................................................... 5
2.6. Specifications .................................................................................................................................................................. 6
3. Installation ...................................................................................................................................................................... 6
3.1. Dimensions....................................................................................................................................................................... 6
3.2. Installation rule ............................................................................................................................................................... 9
3.3. Protective end cap of output cable and using description ....................................................................................... 11
3.3.1 Types of protective end caps and factory status.....................................................................................................11
3.3.2 Pre-installation cleaning instructions for output cables ....................................................................................... 1 2
3.4. Cooling Requirements...................................................................................................................................................14
4. Using the Product .........................................................................................................................................................17
4.1. Front Panel.....................................................................................................................................................................17
4.2. Rear Panel ..................................................................................................................................................................... 18
4.3. Power connection .........................................................................................................................................................19
4.4. Control interface definition .........................................................................................................................................20
4.4.1 Safety XP2 Interface ................................................................................................................................................. 20
4.4.2 HARDWIRING XP1......................................................................................................................................................21
4.4.3 RS232 XP3 Interface ................................................................................................................................................. 24
4.4.4 Analog Interface XP4 ................................................................................................................................................ 25
4.4.5 INTERNET Interface XP5 ........................................................................................................................................... 25
4.5. Introduction to Safety Interlock................................................................................................................................... 25
4.6. Schematic diagram of the internal electrical circuit of the laser .............................................................................. 26
4.7. Start operation sequence............................................................................................................................................. 27
5. Control Mode Selection ............................................................................................................................................... 28
5.1. ON Mode........................................................................................................................................................................30
5.2. AD Enable Mode ...........................................................................................................................................................30

Wuhan Raycus Fiber Laser Technologies Co., Ltd.
User Guide of RFL-C20000M-CE
5.3. Emisson External Control Enable ................................................................................................................................ 30
5.4. Guide Laser (Red Guide Beam) Control ...................................................................................................................... 31
5.5. Programming Mode ..................................................................................................................................................... 31
5.6. REM Mode .................................................................................................................................................................... 31
5.6.1 AD enable mode ........................................................................................................................................................31
5.6.2 Emission external control......................................................................................................................................... 32
5.6.3 Red light control ........................................................................................................................................................32
5.6.4 Programming Mode ................................................................................................................................................. 32
6. Laser Wiring Diagram and Operation Steps ................................................................................................................33
6.1. Internal control in ON Mode........................................................................................................................................ 33
6.2. Laser Operating in External Control Mode .................................................................................................................34
6.3. In ON Mode, the Laser Emission Power is Externally Controlled by Analog Signal .................................................35
6.4. Laser Operating in External Control Programming Mode.......................................................................................... 36
6.5. Set the Power Analog Quantity in REM Mode to Control the Laser Emission ......................................................... 37
6.6. Power Communication Setting in REM ....................................................................................................................... 38
6.7. Programming Mode in REM Mode ............................................................................................................................. 3 9
7. RS232 and INTERNET communication command ...................................................................................................... 40
7.1. Port Configuration......................................................................................................................................................... 40
7.2. Laser Communication Protocol (Network Port & Serial Port)....................................................................................41
8. PC software instructions .............................................................................................................................................. 45
8.1 Maininterface of PC software ......................................................................................................................................45
8.2 Multi-laser control area ............................................................................................................................................... 46
8.2.1 Add/delete laser ........................................................................................................................................................47
8.2.2 ModifylaserIP ............................................................................................................................................................48
8.3 Main working status display ........................................................................................................................................48
8.3.1 Laser’s cumulative operating time display area ..................................................................................................... 49
8.3.2 Laserworkingstatusdisplayarea ............................................................................................................................... 49
8.3.3 Laser power-up, mode selection, light-out control area........................................................................................ 51
8.3.4 Programming mode test area ................................................................................................................................. 51
8. 3 . 5 Power slow rise& down parametersettingarea ...................................................................................................... 52
8.3.6 Laser output parameters read the settings area.....................................................................................................52
8.4 Laserparameterdisplayarea .........................................................................................................................................53
8.5 Alarm type display area ............................................................................................................................................... 53
8.6 PC softwareoperatingmodeselection...........................................................................................................................53
8.7 LanguageDisplays laser’s all status and parameters for diagnosis purposes ........................................................... 55
8.8 Authorization ( time- limited locking) ........................................................................................................................... 5 5
8.8.1 Authorization in user mode...................................................................................................................................... 55
8.8.2 Authorization in authorization mode ...................................................................................................................56

Wuhan Raycus Fiber Laser Technologies Co., Ltd.
User Guide of RFL-C20000M-CE
8.9 About .............................................................................................................................................................................57
8.10 XP1 interface status indication (in diagnostic mode)................................................................................................. 58
8.11 Log (in diagnostic mode) .............................................................................................................................................. 59
8.11.1 Download log ..........................................................................................................................................................60
8.11.2 Downloadrecord of historicalfault ........................................................................................................................ 60
8.11.3 Downloaded file address ........................................................................................................................................61
8.12 Module parameters (in diagnostic mode) ..................................................................................................................61
8 .1 3 Programming settings ( programming editing) ............................................................................................................ 6 1
8.13.1 View the number of wave bars inside the current laser ..................................................................................... 62
8.13.2 Check waveform content .......................................................................................................................................63
8.13.3 Empty all waveforms .............................................................................................................................................. 63
8.13.4 Editwaveform ..........................................................................................................................................................64
8.13.5 Command explanation ........................................................................................................................................... 66
9. Warranty, Repair and Return .......................................................................................................................................6 8
9.1. General Warranty .........................................................................................................................................................68
9.2. Limitations of Warranty ............................................................................................................................................... 68
9.3. Service and Repair......................................................................................................................................................... 68
9.4. Scrap requirements....................................................................................................................................................... 69

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Wuhan Raycus Fiber Laser Technologies Co., Ltd.
User Guide of RFL-C20000M-CE
1. Safety Information
Thankyou for choosing Raycus Fiber Laser. This user manual provides you with important safety,
operation, maintenance and other relevant information. Please read the manual carefully before using this
product. To ensure safe operation and optimum product operation, please observe the following cautions
and warnings as well as other information within this manual.
1.1. Security Label
Figure 1security lable
WARNING:Describes a hazard that leads to severe injury or death to people.
CAUTION: Describes a hazard that leads to general injury to people or damages to
product.

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Wuhan Raycus Fiber Laser Technologies Co., Ltd.
User Guide of RFL-C20000M-CE
English
Chinese
English（20000W）
Chinese（20000W）
English
Chinese
1:Laser Emit Head
2: Type 4 Laser Product
3: Class 2 Laser Product Label-1mW
Red Laser
4: CE Authentication
5: ID Label (20000W)
6: Laser Radiation Hazard
7:Electrical Hazard
1.2. Laser Safety Grade
According to European Standard EN 60825-1, Clause 9 and Chinese StandardGB 7247.1-2012
Safety of Laser Products Part 1:Equipment Classification Requirements, this series of lasers are Class 4
laser instruments. The product emits laser radiation at a wavelength of 1080 nm or around 1080 nm, and
the average laser power radiated from the output head is 20 kW. Direct or Indirect exposure to high power
laser radiation causes damage to the eye or skin. Although the radiant laser is not visible, the beam will
cause irreparable damage to the retina or cornea, so appropriate and certified laser safety glasses must be
worn throughout the laser emitting.
WARNING:Users must use appropriate laser goggles when operating this device. The
laser goggles should be selected according to the range of wavelength emitted from this
product. Users must ensure that the pretect range of laser goggles over the entire range of
laser wavelengths. Please do not directly view the laser output head when laser emitting.

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Wuhan Raycus Fiber Laser Technologies Co., Ltd.
User Guide of RFL-C20000M-CE
1.3. Optical Safety
Any dust on the end of the collimator assembly can damage the crystal of output head or the entire
laser device.
CAUTION:DO NOT emit when the protective cap is not removed, otherwise the lens or
crystal will be damaged.
1.4. Electrical Safety
a) Ensure that the PE line is effectively grounded, and the installation environment is safe and
reliable.
WARNING: The disconnection of the product grounding will electrify the
enclosure, which may result in personal injury to the operator.
b)Ensure that the AC voltage is supplied normally.
CAUTION: Wrong wiring mode or power supply voltage will cause anun recoverable
damage to the laser device.
1.5. Other Safety Rules
a) Do not view the laser output head directly when laser is emitting.
b)Do not use fiber lasers in dark or dim environments.
c) If this device is used in a manner not specified in this document, the protection provided by the
device maybe impaired and the warranty will be voided.
d)There are no user serviceable parts, equipment or assemblies inside the product. All service and
maintenance shall be performed conducted by a certifiedRaycus engineer. In order to prevent
electric shock, please do not break the seal or uncover the shield. Failure to comply with this
instruction will be treated as invalid warranty.

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Wuhan Raycus Fiber Laser Technologies Co., Ltd.
User Guide of RFL-C20000M-CE
2. Product Description
2.1. Features
Fiber lasers are more compact and ready to use than conventional laser structures, with higher
electrical and optical conversion efficiencies, lower power consumption and better beam quality. Thanks
to its flexible laser output, it can be easily integrated with system equipment.
Main Features:
High beam quality
High reliable
Free-maintenance operation
High electro-optical conversion efficiency
Convenient control interface
Fast modulation
Applications:
Industrial cutting and welding
Scientific research
2.2. Package Parts
Please refer to package accessoriesare in the packing box.
2.3. Unpacking and Inspection
Through the specially designed packaging materials and cabinets, Raycus ensures that the lasers are
fully protected during transportation. Nevertheless, in order to prevent unpredictable situations during
transportation, the users still need to carefully check whether the package is correctly placed before
unpacking, and there is no damage from phenomenon such as collision, cracking and flooding on the
outside of the box. Once you find that there is an abnormality in the external cabinet, please inform
Raycus Company in time to deal with it as soon as possible.
Please double check if each listed content is inside the package; and contact Raycus as soon as
possible if there are any issues.
Take extra care when removing the unit from the package and make sure that the fiber optic cable
stays away from any possible collision and vibration. Please do NOT distort, bend or pull the output cable
when unpacking the device; and avoid any collision to the head of laser output.

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Wuhan Raycus Fiber Laser Technologies Co., Ltd.
User Guide of RFL-C20000M-CE
CAUTION: The fiber optic cable and output head are precise optic instrument, ANY
vibration or impact to the output head, and twist or excessive bend to the cable will
damage the instrument.
2.4. Operation Environment
The operation conditions are listed as the following table:
Table 1The Operation Environment Conditions for the Laser
Model
RFL-C20000M-CE
Supply voltage (V)
Three-phase four-wire systemAC 323V~AC 437V 、50/60Hz (including PE)
Power supply capacity
(kVA)
> 65
Water cooling flow
(L/min)
>16 7
Installation
Environment
Flat, no vibration nor impact
Ambient Temperature
10℃~40℃
Relative Humidity
＜70%
a) Make sure the product is properly grounded before use.
b)The laser output head is connected with fiber optic cable. Please inspect the output head carefully
for dust or other contaminations. Use appropriate lens paper to clean it if necessary.
c) Failure to follow the instructions when operating the laser may cause malfunction and damage.
d)It is not allowed to install the output head when the laser is in operation.
e) Do not look into the output head directly. Wear appropriate protective eye glasses all the time
when operating the laser.
Tips: Install the laser in an air-conditioned environment for longer life and better performance.
2.5. Attentions
a) Make sure that the correct voltage of 380VAC is used. Connecting failure of power supply will
damage the device.
b)The output laser is collimated by the collimating lens, it is important to keep the collimating lens
clean, otherwise it will damage the device.
c) Please cap the output head when it is not in use. Do not touch the output lens at anytime. Use
appropriate lens paper to clean it if necessary.
d)Safetykeep the cap when using the laser. To avoid dust, make sure the opening direction of the cap
is put down.
e) Failure to follow the instructions may cause laser power loss, such loss is not covered by warranty.

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Wuhan Raycus Fiber Laser Technologies Co., Ltd.
User Guide of RFL-C20000M-CE
2.6. Specifications
Table 2Product Specifications
Optical properties
Test Conditions
Model
RFL-C20000M-CE
Output Power(kW)
20
/
Operation Mode
CW/Modulated
/
Polarization State
Random
/
Output Power Tunability
(%)
10～100
/
Emission Wavelength(nm)
1080±5
Nominal Output Power
Output Power Unstability
±1.5%
Nominal Output Power; Duration:
5hrs; Ambient Temp.: 25℃
Modulation Frequency (Hz)
50～5k
Nominal Output Power
Red Guide Laser
Power(mW)
0.5～1
/
Fiber output Types
QP
/
Beam Quality
(BPP, mm•mrad)
3.5～4.3@1/e2
Nominal Output Power
Fiber core diameter
(μm)
100
customizable
Delivery Cable Length(m)
30
customizable
Electrical characteristics
Operating Voltage
Three-phase four-wire system
AC340V~AC420V、50/60Hz（Include PE）
/
Maximum power
Consumption (kW)
57
/
Control Method
Serial communication / AD
/
Other characteristics
/
Dimension
WxHxD
（mm）
960x1530x1160
（mm）
Includes casters and rings, without
warning lights
Weight (kg)
＜700
Air conditioning included
Operating Ambient
Temperature (°C)
10～40
/
Humidity (%)
＜90
/
Storage Temperature (°C)
-10～60
/
Cooling Method
Water cooling
/
3. Installation
3.1. Dimensions
The main body dimensions of RFL-C20000M-CE continuous fiber laser are shown in Figure 2.

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Wuhan Raycus Fiber Laser Technologies Co., Ltd.
User Guide of RFL-C20000M-CE
Figure 2-a Front and rear view of the laser.

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Wuhan Raycus Fiber Laser Technologies Co., Ltd.
User Guide of RFL-C20000M-CE
Figure 2-b Top and left view of the laser.
Figure 2The dimensions of RFL-C20000M-CE continuous fiber laser
The structure size of RFL-C20000M-CE laser is 960x1530x1160mm (width×height×depth;
including casters and rings, without warning light); RFL-C20000M-CE laser weighs less than 700kg.
The RFL-C20000M-CE continuous fiber laser uses the RFL-QP output optical cable, and the
external dimensions of the output optical cable head are shown in Figure 3.
Figure 3 External dimensions of the RFL-QP output optical cable head
Note: The dimensions in the above diagram are in the unit of mm.
Before the laser works, make sure that the two copper contacts (Interlock pins) on the output head
are shorted, otherwise the laser will not work properly. Before installing the output cable into the
processing head, the lens of the output cable must be inspected. If the output cable lens is dirty, the lens

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Wuhan Raycus Fiber Laser Technologies Co., Ltd.
User Guide of RFL-C20000M-CE
must be cleaned. It is forbidden to disassemble the output lens by anyone other than staff in Raycus,
otherwise the warranty will be invalidated.
3.2. Installation rule
a) Place the laser horizontally in a suitable position and fix it as necessary;
b)Before the laser is powered on, Please check if the power supply has the correct voltage
(380VAC±10%, 50/60Hz, See Table 2 Product Technical Data Sheet for details.),whether the
grounding line is well grounded;
c) Connect the power cable and control cable to the product when power supply is OFF;
d)Connect the cooling system to the laser and output optical cable head according to the water inlet
and outlet signs;
e) Please check the laser output head and make sure to clean it before installing it in the equipment;
f)Do not step on, squeeze or excessively bend the protective tube during the installation of the
output optical cable to avoid damage to the optical fiber;
g)In the process of installing the optical cable output head, ensure the cleanliness of the surrounding
environment (do not use electric fans to dissipate heat when it is hot in summer to avoid large
dust in the air);
h)The minimum bending diameter of the laser transmission cable in non-working conditions such as
transportation and storage shall not be less than 40cm. When the laser is emitting light, the
minimum bending diameter shall not be less than 60cm;
i)Customers can use the four lifting rings at the top of the product or the four casters at the bottom
to lift or move the product. Before lifting the laser source, make sure that the four lifting rings
are installed firmly and reliably. When lifting the laser source, be sure to use the four lifting
rings; when pushing the laser source, please make sure that the support block at the bottom of
the horizontal adjustment caster is off the ground. After the laser source is positioned, adjust the
support block to make it contact the ground to avoid displacement of the laser source. As shown
in Figure 4.

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Wuhan Raycus Fiber Laser Technologies Co., Ltd.
User Guide of RFL-C20000M-CE
Figure 4 Laser top lifting ring and bottom level adjustment caster.
CAUTION: All the cables can only be connected when power supply is off. Hot plug
may damage the device.
CAUTION:
(1) The placement of the laser output cable should be as natural as possible, and the
output cable should not be twisted;
(2) If the coil diameter of the output optical cable is too small, it will damage the laser.
CAUTION:
(1)In the process of installation and disassembly, please handle the laser output head
gently, and avoid vibration;
(2) Before assembling the laser output head, ensure that the optical lens and cutting head
cavity are clean and free of pollution.

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Wuhan Raycus Fiber Laser Technologies Co., Ltd.
User Guide of RFL-C20000M-CE
3.3. Protective end cap of output cable and using description
3.3.1 Types of protective end caps and factory status
For multi-module high-power fiber lasers, the output cable type used is QBH/QD/QP output optical
cable. There are two types of protective end caps in the machine, as shown in the figure. Type A end cap:
It is assembled on the output optical cable when it leaves the factory. The end cap is equipped with a
protective window to ensure the cleanliness of the end cap (or crystal) during transportation.
Type B end cap: It is attached to the packaging accessories and is generally packed in a lamination
box. The end cap is not equipped with a protective window, which is used to prevent the end cap from
being damaged when the optical cable is loaded with the cutting head (or welding head).
Table 3 Instructions for the use of protective end caps for output optical cables
Model
Optical cable
model
Factory end cap type
Use end cap type
RFL-C20000M-CE
QP
Type A end cap
(with protective
windows )
Type B end cap
(without protective window )
Note: According to the difference of the protective end cap of the cable in the actual use of the customer,
some models need to replace the protective end cap. Please refer to the " Cleaning Instructions for the
Output Optical Cable Before Installation " to clean the output optical cable and the protective end cap.
Figure 5Schematic diagram of the protective end cap of the optical cable

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Wuhan Raycus Fiber Laser Technologies Co., Ltd.
User Guide of RFL-C20000M-CE
3.3.2 Pre-installation cleaning instructions for output cables
a) Preparation tools
Cleaning agent: absolute ethanol, or isopropyl alcohol.
Cleaning tools: cleaning cotton swabs, dust-free paper, compressed air bottles, etc.
b) Steps
clean workbench should be turned on for at least 5 minutes , and the output optical cable
should betaken out of the black packaging box
Figure 6 Output cable placed in the box
c)Place the output optical cable in a clean workbench;
Note: The following operations need to be carried out in a clean workbench. If the operation is
not carried out in a clean environment, it will cause great risk to the QP output optical cable;
operators need to wear finger cots to operate.
Figure 7The output optical cable placed in the clean bench with the ventilation turned on
d) Remove the white dust cap and place it face down on new lint-free paper.
Note: The dust-free paper is for one-time use, and there is a risk of dust falling if it is used
multiple times.

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Wuhan Raycus Fiber Laser Technologies Co., Ltd.
User Guide of RFL-C20000M-CE
Figure 8 Output optical cable with white dust cover removed
e)Use a cotton swab and anhydrous ethanol to clean the metal casing of the optical cable, then
remove the end cap (with window) attached to the optical cable, and place it on a clean
paper .
Figure 9 Remove the A -type end cap on the optical cable
f) Check the cleanliness of the end caps in this state. If the cleanliness is not enough, please
clean the end caps. Please refer to the cleaning method:
http://www.raycuslaser.com/view/1852.html , video reference:https://mp.
weixin.qq.com/s/hRXrPkb8DAyvDYegSWwYLg .
Note: The end cap cleaning is generally performed by our professional staff. If the
customer needs to operate it by himself, we need to go through the relevant training of our
staff and obtain the relevant qualifications before the above operations can be carried out.
If the operation method is improper, it will cause irreversible and serious damage to the
output optical cable during use.
After ensuring the cleanliness , install the B- type end cap. During the installation process, there
will be resistance when screwed to the bottom, which is a normal phenomenon. It is necessary
to ensure that there is no gap between the end cap and the main body sleeve. And then check the
finish and cleanliness of the end cap's glossy surface, asFigure shown. Then connect the fiber

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Wuhan Raycus Fiber Laser Technologies Co., Ltd.
User Guide of RFL-C20000M-CE
optic cable output head to the cutting head (or welding head) with the B- type end cap installed.
This operation needs to ensure the cleanliness of the inner and outer surfaces of the cutting head
(or welding head) connector.
Note: The connection with the cutting head (or welding head) still needs to be carried out
in a clean workbench, and it is necessary to check the cleanliness and smoothness of the
relevant components of the cutting head (or welding head) itself.
Keep the corresponding accessories as shown in order to facilitate there-transportation of the
laser or output cable.
Note: The fiber optic cable must be loaded with Type A end caps each time it is
transported. That is, every time the output optical cable is unloaded from the cutting head
and needs to be transported, the end cap of type B must be replaced with the end cap of
type A , and the white dust cover must be covered, and finally put into a black box for
transport.
Figure 10 Accessories that customers need to keep: black protective box, white dust cover, type A
end cover
3.4. Cooling Requirements
Table 4 Cooling Requirements
Model
Cooling capacity
(kW)
Minimum flow
(L/min)
Input pressure
(Bar)
Hose inner
diameter
(mm)
Cooling water
temperature
( )
RFL-C20000-CE
≥40
>167
4～6
Φ38
22±1
Requirements on Cooling Water:

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Wuhan Raycus Fiber Laser Technologies Co., Ltd.
User Guide of RFL-C20000M-CE
a) The laser source cooling water connection is shown in Figure 10, and the arrow direction indicates
the water flow direction;
b)Cooling water needs to use pure water;
c) In order to prevent the water in the water cooler from growing mold and causing pipeline blockage,
it is recommended to add alcohol when filling pure water, and the amount of alcohol added is 10%
of pure water;
d) If ambient temperature is between - 10℃and 0℃, must be used to use 30% alcohol (volume ratio),
and replace it every 2 months;
e) If ambient temperature is below - 10℃, the chiller with both heating and cooling functions must be
used, and keep it in full-time operation;
f)For the connection of cooling water and normal temperature water circuits,please use Raycus
supporting water pipes.If the water pipes are self-distributed,please do not increase the length of
the water pipes and change the inner diameter of the water pipes;
g) The tightening torque of the clamps for the cooling water circuit water pipe should be greater than
6.5N·m,and the tightening torque of the clamps for the normal temperature water circuit should
be greater than 5N·m.
Figure 11diagram of laser cooling system connection

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Wuhan Raycus Fiber Laser Technologies Co., Ltd.
User Guide of RFL-C20000M-CE
Water cooling requirements for output optical cables:
a) Water flow requirements: QP output cable water flow is greater than 3.0L/min;
b)Water cooling pressure: 0.4～0.6Mpa at the water inlet;
c) Water inlet and outlet connector type: M6 to ϕ8 quick-tightening connector;
d)Water pipe type: outer diameter ϕ8 and inner diameter ϕ5.5;
e) Cooling water quality: deionized water, distilled water, purified water;it is recommend to replace
once a month,and the replacement period should not exceed two months.
f)PH value of cooling water: 5.0～8.0;
g)The water cooler needs to be equipped with a filter element whose filter particle size is less than
100um;the filter element needs to be cleaned once a month.
h)Maximum cooling water temperature: 35℃;
i) The lowest cooling water temperature: 5℃greater than the saturated dew point temperature;
j)Additives in cooling water: meet the above PH value and solid particle size requirements;
k)Armored pipe bending radius: in non-working conditions such as transportation and storage, the
minimum bending diameter shall not be less than30cm. When the laser is emitting, the minimum
bending diameter shall not be less than 40cm;
l) Long-term vibration, less than 2G; impact, less than 10G.
Other requirements:
a) When starting the cooling system for the first time, check the entire water system and joint for
water leakage.
b) If the laser is not used for a long time, the cooling water inside the cooling system and the laser
inside should be drained, otherwise the laser equipment will be damaged.
c) Please use compressed gas below 0.5MPa when emptying water from the device. Failure to do so
may cause permanent equipment damage to cooling system.
CAUTION:
(1) Set the water temperature of the cooling system correctly according to the ambient
temperature. Setting the water temperature too high will result in the laser not working
properly. Setting the water temperature too low will cause condensation inside the laser or the
laser output head, which will cause damage to the laser;
(2) Before turning on the laser, the cooling system must be working properly and the water
temperature should be suitable for the temperature.