Questt Robot150J User manual

Wuhan Questt Asia Technology CO.,LTD
Wuhan Questt Asia Technology Co., Ltd Address: A7-101, Hangyu building, Wuhan University Sci & Tech Park, East
Lake High-tech Dev. Zone, Wuhan, Hubei, China
Tel: [phone] Fax: [phone] Http://www.questt.com.cn; Email:inf[email protected]
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User Manual
Robot150J Jewelry Laser Welding Machine

Wuhan Questt Asia Technology CO.,LTD
Wuhan Questt Asia Technology Co., Ltd Address: A7-101, Hangyu building, Wuhan University Sci & Tech Park, East
Lake High-tech Dev. Zone, Wuhan, Hubei, China
Tel: [phone] Fax: [phone] Http://www.questt.com.cn; Email:[email protected]
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Wuhan Questt Asia Technology Co., ltd
Table of Contents
Preface……………………………………..…………………………………………..………3
1. Laser Basics………………………………………………………………………..……..…4
1.1 Introduction…………………………………………………………………………..………5
1.2 Principle of Laser Generation…………………………………………………..…...........4
2. Introduction of Robot150J ……………………………………………………… …….5
2.1 Characteristics………………………………………………………………………….…….5
2.2 Specifications………………………………………………………………………….…….5
2.3 Main Structure & Maintenance……………………………………………………………6
3. Preusing………………………………………………………………………………………..10
3.1 Hardware Connection………………………………………………………...…11
3.2Laser Activation………………………………………………………………………..12
3.3Laser Alignment………………………………………………………………………..13
4.Operation……………………………………………………………………………………….13
5.Application ……………………………………………………………………………………16
6. Warranty &After-sale Service…………………………………………………16
7. Common Troubleshooting…………………………………………………………….
8.Service Report ………………………………………………………………………………18

Wuhan Questt Asia Technology CO.,LTD
Wuhan Questt Asia Technology Co., Ltd Address: A7-101, Hangyu building, Wuhan University Sci & Tech Park, East
Lake High-tech Dev. Zone, Wuhan, Hubei, China
Tel: [phone] Fax: [phone] Http://www.questt.com.cn; Email:[email protected]
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※Preface
Thanks for choosing laser welding machine manufactured by Wuhan Questt Asia Technology
Co., Ltd
We have made necessary precautions as much as possible to ensure operator’s safety.
Nonetheless, incorrect use/ maintenance/transformation of the machine will still cause various
damages to the operator or machine.
Please pay special attention to the following tips:
1、When you don’t need a certain electrical component (rotary/ slide way/ motorized XY),
please don’t connect the their power cable.
2、Please don’t try to change any part inside the machine with power on.
3、Make sure this machine is well-grounded and regular checking is necessary.
4、Use one hand only to turn on/off the switch just to avoid human body circuit.
5、If you have to touch those parts with high voltage, please use well-insulated tools for
security.
1. Laser basics
1.1 Introduction
FRIENDLY WARNING !!!
1、This machine is Class 4 laser machine. Any direct exposure to laser flash or
beam can be harmful to operator’s eyes. When observing from microscope,
please stop operation for 3 minutes every 30 minutes.
2、There might be a fire accident or even explosion if laser beam shoot on
flammable materials. Therefore, please don’t put any flammable materials near
by the laser path.
3、Please don’t operate this machine when the shield cover is open, unless you’re
permitted to do this by our technician for checking or repairing purpose.
4、There’s a danger of getting electrical shot when you try to fix any part inside
the power unit or try to change the xenon lamp inside the laser chamber. Please
turn off the power before any operation and try your best to operate with one
hand only.

Wuhan Questt Asia Technology CO.,LTD
Wuhan Questt Asia Technology Co., Ltd Address: A7-101, Hangyu building, Wuhan University Sci & Tech Park, East
Lake High-tech Dev. Zone, Wuhan, Hubei, China
Tel: [phone] Fax: [phone] Http://www.questt.com.cn; Email:[email protected]
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The word “LASER” is an acronym for Light Amplification by Stimulated Emission of Radiation.
The elements of a laser are---resonator
There are two of types of Nd: YAG laser welders; continuous wave and pulsed. The pulsed
laser utilizes high peak power to create the weld, whereas the Questt laser uses average power.
This pulsed laser to use less energy to create the weld, with a smaller heat affected zone. This
provides the pulsed laser with unrivalled spot welding performance and minimal heat input
seam welding.
1.2 Principle of Laser Generation
The generation of a laser beam is essentially a three-step process that occurs almost
instantaneously
1) The pump source provides energy to the medium, exciting the laser medium atoms such
that electrons held with in the atoms are elevated temporarily to higher energy states. The
electrons held in this excited state cannot remain there indefinitely and drop down to a lower
energy level. In this process, the electron looses the excess energy gained from the pump
energy by emitting a photon. This is called spontaneous emission and the photons produced
by this method are the seed for laser generation.
2) The photons emitted by spontaneous emission eventually strike other electrons in the higher
energy states. “Eventually” is a very short time due to the speed of light and density of
excited atoms! The incoming photon “knocks” the electron from the excited state to a lower
energy level creating another photon. These two photons are coherent
meaning they are in phase, of the same wavelength, and traveling in the same direction.
This is called stimulated emission.
3) The photons are emitted in all directions, however some travel along the laser medium to
strike the resonator mirrors to be reflected back through the medium. The resonator mirrors
define the preferential amplification direction for stimulated emission. In order for the
amplification to occur there must be a greater percentage of atoms in the excited state than
the lower energy levels. This “population inversion”of more atoms in he excited state leads
to the conditions required for laser generation.

Wuhan Questt Asia Technology CO.,LTD
Wuhan Questt Asia Technology Co., Ltd Address: A7-101, Hangyu building, Wuhan University Sci & Tech Park, East
Lake High-tech Dev. Zone, Wuhan, Hubei, China
Tel: [phone] Fax: [phone] Http://www.questt.com.cn; Email:[email protected]
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German Technology | Made in China

Wuhan Questt Asia Technology CO.,LTD
Wuhan Questt Asia Technology Co., Ltd Address: A7-101, Hangyu building, Wuhan University Sci & Tech Park, East
Lake High-tech Dev. Zone, Wuhan, Hubei, China
Tel: [phone] Fax: [phone] Http://www.questt.com.cn; Email:[email protected]
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German Technology | Made in China
2. Introduction of Robot150J Spot Laser Welding
Questt series laser spot welder is firstly designed for jewelry ornaments manufacturing, jewelry
repairing, rings or bracelets resizing, gold and silver re-tipping, stone setting, eyewear welding
or repairing, denture welding, small auto parts welding, etc. Generally, it is especially suitable
for tiny target precision welding. It works on gold, platinum, titanium, silver, copper, nickel,
aluminum, magnesium, stainless steel, etc.
2.1 Characteristics
●Energy, pulse width, frequency and focus can be adjusted within a wide range to achieve
different welding effects.
●Ceramic reflector used in the laser pump chamber is imported, which is corrosion resistant,
high temperature resistant, high electrical/optical conversion.
●World-leading automatic light shielding system is employed to remove harmful lighting on
eyes during operation.
●24-hour continuous operation, with stable operating performance,
●Free of maintenance within 10000 hours.
●Personalized design in compliance with ergonomics principles.
2.2 Specifications
Laser Source: Nd3:YAG
Wavelength: 1064nm
Pulse frequency: 150Hz adjustable
Pulse width: 1.5~20ms adjustable
Single pulse Energy: 60J
Rated Laser Power: 150W
Cover Gas Channel: 1 line quick connection
Focused Beam Diameter: 0.13mm
Expanding Ratio: 3X
Microscope Ratio: 10X
Focal Length: 100mm
Power Supply: Single phase AC 220V10
Power consumption: 9kw
Running Environment: Temperature 5℃30℃, humidity < 85%.
Continuous Working Time: 24 hrs
Shield Gas Connection: 1 line quick connection (argon)
2.3 Main Structure & Maintenance
The whole system is composed of:
A. Laser Generator
B. Laser Power
C. Optical System
D. Control system

Wuhan Questt Asia Technology CO.,LTD
Wuhan Questt Asia Technology Co., Ltd Address: A7-101, Hangyu building, Wuhan University Sci & Tech Park, East
Lake High-tech Dev. Zone, Wuhan, Hubei, China
Tel: [phone] Fax: [phone] Http://www.questt.com.cn; Email:[email protected]
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E. Cooling system
A. Laser Generator
1. Brief introduction of laser generator
The laser is the device of transforming the electricity energy to the laser energy. In this
system, the laser is Nd3:YAG laser. It is mainly composed of the following parts: (1) pump lamp
(2) laser rod (3) cavity (4) optical resonator (6) other accessories
Pump lamp excites the laser medium to transform the electricity energy to optical energy.
The laser rod transforms the optical energy to laser energy. In this system, the pump lamp is the
pulsed Xenon lamp and the laser medium is Nd3:YAG rod.
In the cavity, the light emitted from the pump lamp is focused on the laser medium. In our
system, it is the close ceramic cavity.
In the optical resonator, the laser is amplified to form the high intensity laser output.
There are two high damage threshold coated plane mirrors which are set parallel in the
resonator.
Only 3% of the electricity energy is transformed into laser energy during the laser working,
the other electricity energy is transformed into heat and distributed in the pump lamp, laser rod,
and the cavity body. To protect the laser, this heat has to be taken away. In this system, the
pump lamp, laser rod and the cavity body are cooled by the circulation deionized water.
Besides the above parts, there are still the other accessories as follow:
(1) High voltage electrode，(2) The insulating base，(3) Positioning support, (4) The adjustable
mirror support, (5) Laser support.
2. Things to be aware of:
The laser system is the opto-mechano-electrically integrated. It is very precise and has to be
operated by the authorized person who has the professional technology and technique.
3. Optical resonator
The optical resonator is composed of two coated plane mirrors which are set strictly parallel in
the resonator. These two mirrors can not be touched and moved after the adjustment and keep
clean, otherwise, the surface of the mirror may be destroyed. So, the laser cover can not be
moved at any time. When the laser output becomes low, firstly, it has to be checked whether the
surface of the mirrors are stained. If it has been stained, use the lens paper or absorbent cotton
to erase softly with the cleaning liquid (the mixture of 50% no water ethanol and 50% aether).
Then, check the adjustment of the resonator.
4. Cooling of laser
There are two water hoses connected to the pump lamp and the laser rod respectively. Either of
the hoses is blocked, unredeemable damage may be caused. Every time when the system is
reinstalled, before starting the laser, it has to be checked carefully that the water flow is correct.
5. Change flashing lamp
The pulse Xenon lamp is consumable part. Its service lifetime is 106flash times. To guaranty
the normally work of the system, the lamp has to be changed when it is out of service life or
when the laser energy is weaken.

Wuhan Questt Asia Technology CO.,LTD
Wuhan Questt Asia Technology Co., Ltd Address: A7-101, Hangyu building, Wuhan University Sci & Tech Park, East
Lake High-tech Dev. Zone, Wuhan, Hubei, China
Tel: [phone] Fax: [phone] Http://www.questt.com.cn; Email:[email protected]
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More attention must to be paid to the two ends of the Xenon lamp during the changing:
(1) Turn off the system, close the water and discharge the remain charges in the energy
store capacitance;
(2) Unload the electrode of the lamp;
(3) Remove the top of the lamp, draw out the Xenon lamp carefully beside the reflecting
mirror;
(4) Clean the cover tube with the cotton and the cleaning liquid;
(5) Verify the size of the Xenon lamp;
(6) Insert the lamp in the cavity, close the top and mount the electrode;
(8) Check the water leaking;
(9) Turn on the main power supply to check the discharge;
(10) Check the laser output power by using the single pulse mode. If the laser output
power can not meet the requirement, the resonator need to be re-adjusted repeatedly;
(11) Close the laser cover.
6. Nd3+:YAG rod
Nd3+: YAG rod is the core of the laser, it must be very careful to handle the rod during the
installation and the using. The two end of the rod must be keep parallel strictly. If there is
dirtiness on the two end surface, it has to clean the room firstly, then ask the professional
service people to handle the rod. Take out the Nd3+: YAG rod, clean it by lens paper and
cleaning liquid. The reasons of the rod damage may be the followings:
a. The flow of the cooling water is low or the water hose is blocked. It lead to an overheat in the
lamp and the laser rod.
b. The end surface is damaged by something hard.
c. The coated end surface is burned out because of the dirtiness on the surface.
d. The strong and uneven stress from the installation of the rod breaks the laser rod. So, usually,
the operator can not open the laser cover and can not touch the YAG rod. If there is dirtiness on
the end surfaces of the YAG rod, it has to be handled by the professional service people.
7. Maintenance of condenser cavity
The condenser cavity is ceramic cavity imported from UK, which has very high reflectivity. It is
free of maintenance but never allowed to take apart.
8. The protection of high voltage
To start the laser, there are three voltages applied to the Xenon lamp. They are the triggering
voltage: about 15~20kV; the pre-igniting voltage: about 1.7kV~2kV and the arc discharge
voltage: about 500~1900 voltage. It must keep at least 15mm distance with the surrounding
component. During the operating, the insulating board must be clean and dry to prevent short-
circuit of the high voltage.
B. Laser Power
1. Specification
The laser power supply in this system is pulse mode power supply. The IGBT is supplied
by the L-C resonating charging and the energy storing circuit. The control circuit has two SCM

Wuhan Questt Asia Technology CO.,LTD
Wuhan Questt Asia Technology Co., Ltd Address: A7-101, Hangyu building, Wuhan University Sci & Tech Park, East
Lake High-tech Dev. Zone, Wuhan, Hubei, China
Tel: [phone] Fax: [phone] Http://www.questt.com.cn; Email:[email protected]
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as the core. So the output power and the repeatability can be adjusted conveniently. The power
supply can be adjusted independently or together with the control system. There are multi-inter-
lock protections in this system, to shut off the main power supply in emergency situation.
2. Description for the electric circuit
The electric circuit is composed of the followings:
Main circuit: include the charging circuit, energy storing circuit, discharging circuit loop and
pre-igniting circuit.
The control circuit: include the electric control circuit, microcomputer control circuit and all
kinds of the protection circuit.
a. Voltage rising/rectifying circuit
By raising the single-phase voltage, the voltage rising / rectifying circuit convert the 220 ACV
to 620 DCV to supply the power of the charging circuit.
b. The charging circuit
The charging circuit is composed of the IGBT power transistors. This kind of circuit can
increase the repeatability of the charging.
c. The discharging circuit loop
The discharging circuit loop is controlled by the SCR. During the discharge, the discharging
IGBT power transistors have to be shut off. After the charging of the energy storing circuit, the
charging IGBT power transistors are shut off, waiting for sometime delay, the discharging
IGBT power transistors are turned on to discharge. When the energy storing capacitor
discharging finished, the discharging IGBT power transistors will be shut off automatically.
d. The pre-igniting and the triggering circuit
It includes the voltage rising transformer, high voltage rectifier, filter, barrater, current relay,
high voltage pulse transformer and high voltage triggering circuit.
The pulsed Xenon lamp is working in the aura discharging during the pre-igniting, which has
the characteristic of the negative resistance. To maintain the aura discharging of the Xenon
lamp after the arc discharging, the pre-igniting circuit must have the characteristic of constant
current. So the pre-igniting circuit must have very high limit resistance.
The triggering mode in this laser is inner triggered by 50Hz pulse automatically. When
the pre-igniting circuit works, the high voltage pulse transformer produces the high voltage of
15,000V ~ 20,000V. When the pre-igniting begins, the triggering circuit shut off automatically
and immediately.
e. Control circuit
The control circuit includes two parts of operating circuit and microcomputer control circuit.
The operating circuit controls the water pump, pre-igniting circuit, main power supply, the
power supply of the control circuit and the inter-lock protection by means of the components
such as the button, contactor and relay. The microcomputer control circuit is integrated in a
PCB.
f. Protection circuit

Wuhan Questt Asia Technology CO.,LTD
Wuhan Questt Asia Technology Co., Ltd Address: A7-101, Hangyu building, Wuhan University Sci & Tech Park, East
Lake High-tech Dev. Zone, Wuhan, Hubei, China
Tel: [phone] Fax: [phone] Http://www.questt.com.cn; Email:[email protected]
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When the pre-igniting circuit shut off, the pre-igniting shut-off protection circuit takes into
function and sends out the fault signal.
When the water flow is low in the cooling system, the water flow relay breaks and shuts off
the pre-igniting circuit and the main power supply, thus to stop the system.
C. Optical System
1. Binocular microscope
To observe the working piece clearly, the binocular large caliber and long focus length
microscope has been used in this system. Before the object lens, there is a coated protection
glass to protect the lens from the spatter during the laser processing. The ocular can be taken
down by loosen the fixing bolt for the shipping and maintenance purpose.
2. Laser beam expander and the focusing system
To ensure the laser welding spot in the center of the view all the time during the focusing, the
laser beam has to be co-axial with the beam path of the microscope. In this system, the laser
beam and the optical path of the microscope share the same object lens. The offset of the focus
point is adjusted by the up and down keys. The offset of the focus point is determined by the
experiment according to the welding processing technology.
3. The indication of the welding spot
Because the YAG laser is invisible infrared ray of 1.06m, there is a cross in the ocular, whose
intersection accords to the laser spot, to indicate the laser position. Thus the laser beam can be
aimed at the welding position on the piece to be welded easily.
4. Cautions
(1) It is forbidden to touch the surface of the optics by hand or scratch by something hard. It is
also forbidden to blow the dusts on optics by mouth. It can be blown by the special blowing ball
or cleaned by the long fiber absorbent cotton ball or the lens paper, if the optics is stained.
(2) Normally, don’t disassemble the optical system to prevent from the damage and the dust.
(3) Move the tube of the object lens carefully and don’t touch the protect glass. Before
changing the protect glass, remove the front tube of the object lens first and the press ring
carefully.
D. Control System
The system can be controlled by the operation panel before using, or by joystick inside the
welding chamber during using.
E. Cooling System
1. Construction
The cooling system is the main part of the laser system. It is composed of the heat exchanger,
magnetic pump, filter, water tank, switch of water flow, the temperature contactor, ABS hose
and valves to form a closed circulation water system.

Wuhan Questt Asia Technology CO.,LTD
Wuhan Questt Asia Technology Co., Ltd Address: A7-101, Hangyu building, Wuhan University Sci & Tech Park, East
Lake High-tech Dev. Zone, Wuhan, Hubei, China
Tel: [phone] Fax: [phone] Http://www.questt.com.cn; Email:[email protected]
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2. The principle of the cooling
The inner deionized water in the water tank is pumped by the magnetic pump to cool the YAG
rod, pulse lamp, two electrodes. The heated deionized water goes through the heat exchanger
and returns to the water tank. The resistivity of the deionized water must be higher than 0.5 M-
cm. When the deionized water becomes dirty or the resistivity of it becomes higher, the Xenon
lamp may can not be ignited and the laser cavity and the glass tube may be stained. In this
situation, the deionized water has to be changed immediately. ( the deionized water should be
changed one time every week when the laser system is operated continuously)
In the heat exchanger, the Freon is used to take the heat away from the inner deionized
water. In order to ensure the proper working of the system, there is an over temperature
contactor and over flow controller in the cooling system to supervise the water in the laser.
Once there is no enough water flow or the water pump does not work properly, or there is no
enough water in the water tank, the laser power supply will be turned off immediately to prevent
from the lamp exploding or the rod exploding.

Wuhan Questt Asia Technology CO.,LTD
Wuhan Questt Asia Technology Co., Ltd Address: A7-101, Hangyu building, Wuhan University Sci & Tech Park, East
Lake High-tech Dev. Zone, Wuhan, Hubei, China
Tel: [phone] Fax: [phone] Http://www.questt.com.cn; Email:[email protected]
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Wuhan Questt Asia Technology CO.,LTD
Wuhan Questt Asia Technology Co., Ltd Address: A7-101, Hangyu building, Wuhan University Sci & Tech Park, East
Lake High-tech Dev. Zone, Wuhan, Hubei, China
Tel: [phone] Fax: [phone] Http://www.questt.com.cn; Email:[email protected]
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3. Pre-using
3.1 Hardware Connection
A. Put the two pipes in your drinking water container.Connect the protection gas if you have.
B. Connect the Foot Switch
C. Connect the laser welder power:
red wire=Live wire, blue wire=Null wire, Yellow wire=PE Earth wire

Wuhan Questt Asia Technology CO.,LTD
Wuhan Questt Asia Technology Co., Ltd Address: A7-101, Hangyu building, Wuhan University Sci & Tech Park, East
Lake High-tech Dev. Zone, Wuhan, Hubei, China
Tel: [phone] Fax: [phone] Http://www.questt.com.cn; Email:[email protected]
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4. Operation
4.1 Operation steps:
Step 1) Get the electricy. Connect to the main power wire in factory or home.
Step 2) Put the Water In pipe in your drinking water container.
Step 3) Loose the Emergency Stop,twist the key switch to start laser welder.
Step 4)
A. After turn on the keyswitch, the panel shows the below interface.

Wuhan Questt Asia Technology CO.,LTD
Wuhan Questt Asia Technology Co., Ltd Address: A7-101, Hangyu building, Wuhan University Sci & Tech Park, East
Lake High-tech Dev. Zone, Wuhan, Hubei, China
Tel: [phone] Fax: [phone] Http://www.questt.com.cn; Email:[email protected]
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B. Then the water cooling system will warn:”Water In”, put the Water In pipe in your drinking
water container, press the red button, the pump start to pull in water in tank inside the
machine. After finishing pull in water, the panel will show normal.
C. Press the green button “START”,Wait for a few minutes till capacitance charging is finished,
when everything read: ”normal”, it means the welder is ready to use.Select parameters
and set values correctly based on the type of material and make small adjustment
according to the result of test shooting. Sometimes it relies more on operator’s
experience.

Wuhan Questt Asia Technology CO.,LTD
Wuhan Questt Asia Technology Co., Ltd Address: A7-101, Hangyu building, Wuhan University Sci & Tech Park, East
Lake High-tech Dev. Zone, Wuhan, Hubei, China
Tel: [phone] Fax: [phone] Http://www.questt.com.cn; Email:[email protected]
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Step 5) Adjust the position of shield gas nozzle before welding so that your work piece can be
prevented from quick oxidation. To change language, press “OTHER”, see below photo.
Step 6) Now you are free to weld. Take your products in hand, move in your arms from the two
side holes, move up and down the prodduct, see it from the microscope, when you can see the
welding point very clearly, press the foot switch and laser beam will come out to weld.
Step 7) When you finish welding, press”STOP”, turn off the key switch, shut off the electricy.
Finally, please open the protective cover and clean the dusts in the welding chamber. We
strongly suggest you to do this at least once a month.

Wuhan Questt Asia Technology CO.,LTD
Wuhan Questt Asia Technology Co., Ltd Address: A7-101, Hangyu building, Wuhan University Sci & Tech Park, East
Lake High-tech Dev. Zone, Wuhan, Hubei, China
Tel: [phone] Fax: [phone] Http://www.questt.com.cn; Email:[email protected]
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4.2 Laser Activation
After you change the Xenon lamp, you need to adjust the laser beam.
A. Take off the two screws and the cover of the laser welder chamber.
(A)
B. Take off the white caps and connect the two electrodes of xenon lamp.
(When you change the lamp, you need this step. New machine,no need.)
(B)

Wuhan Questt Asia Technology CO.,LTD
Wuhan Questt Asia Technology Co., Ltd Address: A7-101, Hangyu building, Wuhan University Sci & Tech Park, East
Lake High-tech Dev. Zone, Wuhan, Hubei, China
Tel: [phone] Fax: [phone] Http://www.questt.com.cn; Email:[email protected]
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4.3 Laser Alignment
This is not a must-do when you firstly receive this machine. Only when you find the laser spot
is not round any more or the laser energy becomes very weak, you may consider to do laser
alignment.
A. Start the laser welder by twisting the key switch and set parameters as:
Curt=100A / Wid =1ms / Fre =1 Hz
B. Hold the ceramic dimmer chip and put it in front of the brass tube with your left hand. Now
the laser beam can be intercepted and becomes a green dot on the chip.
(B)
C. Adjust the two black screws as the following picture with your right hand until you find the
green dot roundest and brightest.
(C)

Wuhan Questt Asia Technology CO.,LTD
Wuhan Questt Asia Technology Co., Ltd Address: A7-101, Hangyu building, Wuhan University Sci & Tech Park, East
Lake High-tech Dev. Zone, Wuhan, Hubei, China
Tel: [phone] Fax: [phone] Http://www.questt.com.cn; Email:[email protected]
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5. Application
Questt series laser welding machine is specially designed for spot welding, perforating,
repairing, retipping and resizing of gold/silver/titanium/platinum jewelries, stone caging and gap
bridging of small accessories. It is also widely used in aviation, aerospace, sports products,
eyewear frames, medical instruments, titanium alloy denture, instruments, electronics,
machinery, automobile, etc. Applicable materials are various: gold, silver, steel,, copper,
aluminum, titanium, brass, etc,
6. Warranty & After-sale Service
We guarantee that the technical parameters of the machine Robot150J laser welder accord to
the technical requirements.
The guarantee covers a period of twelve (12) months from the date of production.
The guarantee shall not apply in the event that the sub-assembly identification markings
have been removed, defaced or altered or if any sub-assembly or part has been replaced or
modified without the consent of Wuhan Questt Asia Technology Co., Ltd

Wuhan Questt Asia Technology CO.,LTD
Wuhan Questt Asia Technology Co., Ltd Address: A7-101, Hangyu building, Wuhan University Sci & Tech Park, East
Lake High-tech Dev. Zone, Wuhan, Hubei, China
Tel: [phone] Fax: [phone] Http://www.questt.com.cn; Email:[email protected]
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The guarantee does not apply to equipment or components for which inspection by Wuhan
Questt shall disclose it has became defective or unusable due to misuse, mishandling,
accidental damage, negligence or any other cause which does not comply with the
requirements given in the instruction manual. For example:
The guarantee dose not includes shipping freight or postal fee for returned broken parts or
new parts to be replaced.
7. Common Troubleshooting
Fault
Possible Reasons
Proper Solutions
Machine won’t work with
the power on
1. Flow alert is not
connected
2. AC fault
1.Check the water chiller connection
2.Check the total power supply
Xenon lamp won’t light up
with the power on
1.Lamp is broken
2.Lamp tube gets black
3.Pre-ignition circuit
failure
4.Lamp’s service life runs
out
5.Lamp poles fall off
1.Replace a new lamp
2.Change the water in the chiller
3.Check the volts according to the
circuit map
4.Replace a new lamp
5. Check and plug the poles
Cooling fan won’t work
with the power on
Fan power failure
Replace a new fan
Output energy reduce
1.Water polluted
2.Xenon lamp worn out
3.Condenser cavity worn
out
1. Change the water in the chiller
2.Replace the lamp
3. Clean or replace the condenser cavity
If the above steps do not correct the malfunction, do not disassemble without our
instruction. Do not hesitate to contact us by the following info:
Wuhan QUESTT ASIA Technology Co., Ltd
Address: A7-101, Hangyu building, Wuhan University Sci & Tech Park, East Lake
High-tech Dev. Zone, Wuhan, Hubei, China Zip: 430223
Tel: [phone] Fax: [phone]
Email: [email protected]
Mobile: [phone]
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